shell/ev-view.c

   1 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8; c-indent-level: 8 -*- */
   2 /* this file is part of evince, a gnome document viewer
   3  *
   4  *  Copyright (C) 2004 Red Hat, Inc
   5  *
   6  * Evince is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * Evince is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
  19  */
  20
  21 #include <stdlib.h>
  22 #include <math.h>
  23 #include <string.h>
  24 #include <gtk/gtkalignment.h>
  25 #include <glib/gi18n.h>
  26 #include <gtk/gtkbindings.h>
  27 #include <gtk/gtkselection.h>
  28 #include <gtk/gtkclipboard.h>
  29 #include <gdk/gdkkeysyms.h>
  30
  31 #include "ev-marshal.h"
  32 #include "ev-view.h"
  33 #include "ev-view-private.h"
  34 #include "ev-utils.h"
  35 #include "ev-selection.h"
  36 #include "ev-document-links.h"
  37 #include "ev-document-images.h"
  38 #include "ev-document-find.h"
  39 #include "ev-document-transition.h"
  40 #include "ev-document-misc.h"
  41 #include "ev-job-queue.h"
  42 #include "ev-page-cache.h"
  43 #include "ev-pixbuf-cache.h"
  44 #include "ev-tooltip.h"
  45 #include "ev-application.h"
  46
  47 #define EV_VIEW_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), EV_TYPE_VIEW, EvViewClass))
  48 #define EV_IS_VIEW_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), EV_TYPE_VIEW))
  49 #define EV_VIEW_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), EV_TYPE_VIEW, EvViewClass))
  50
  51
  52 enum {
  53         PROP_0,
  54         PROP_STATUS,
  55         PROP_FIND_STATUS,
  56         PROP_CONTINUOUS,
  57         PROP_DUAL_PAGE,
  58         PROP_FULLSCREEN,
  59         PROP_PRESENTATION,
  60         PROP_SIZING_MODE,
  61         PROP_ZOOM,
  62         PROP_ROTATION,
  63         PROP_HAS_SELECTION,
  64 };
  65
  66 enum {
  67         SIGNAL_BINDING_ACTIVATED,
  68         SIGNAL_ZOOM_INVALID,
  69         SIGNAL_EXTERNAL_LINK,
  70         SIGNAL_POPUP_MENU,
  71         N_SIGNALS,
  72 };
  73
  74 enum {
  75         TARGET_DND_URI,
  76         TARGET_DND_TEXT,
  77         TARGET_DND_IMAGE
  78 };
  79
  80 enum {
  81         TARGET_STRING,
  82         TARGET_TEXT,
  83         TARGET_COMPOUND_TEXT,
  84         TARGET_UTF8_STRING,
  85         TARGET_TEXT_BUFFER_CONTENTS
  86 };
  87
  88 static const GtkTargetEntry clipboard_targets[] = {
  89         { "STRING", 0, TARGET_STRING },
  90         { "TEXT",   0, TARGET_TEXT },
  91         { "COMPOUND_TEXT", 0, TARGET_COMPOUND_TEXT },
  92         { "UTF8_STRING", 0, TARGET_UTF8_STRING },
  93 };
  94
  95 static const GtkTargetEntry view_drop_targets[] = {
  96         { "text/uri-list", 0, 0 }
  97 };
  98
  99 static guint signals[N_SIGNALS];
 100
 101 typedef enum {
 102         EV_VIEW_FIND_NEXT,
 103         EV_VIEW_FIND_PREV
 104 } EvViewFindDirection;
 105
 106 #define ZOOM_IN_FACTOR  1.2
 107 #define ZOOM_OUT_FACTOR (1.0/ZOOM_IN_FACTOR)
 108
 109 #define MIN_SCALE 0.05409
 110 #define MAX_SCALE 4.0
 111
 112 #define SCROLL_TIME 150
 113
 114 /*** Scrolling ***/
 115 static void       scroll_to_current_page                     (EvView *view,
 116                                                               GtkOrientation orientation);
 117 static void       ev_view_set_scroll_adjustments             (EvView             *view,
 118                                                               GtkAdjustment      *hadjustment,
 119                                                               GtkAdjustment      *vadjustment);
 120 static void       view_update_range_and_current_page         (EvView             *view);
 121 static void       set_scroll_adjustment                      (EvView             *view,
 122                                                               GtkOrientation      orientation,
 123                                                               GtkAdjustment      *adjustment);
 124 static void       add_scroll_binding_keypad                  (GtkBindingSet      *binding_set,
 125                                                               guint               keyval,
 126                                                               GdkModifierType modifiers,
 127                                                               EvScrollType       scroll,
 128                                                               gboolean            horizontal);
 129 static void       ensure_rectangle_is_visible                (EvView             *view,
 130                                                               GdkRectangle       *rect);
 131
 132 /*** Geometry computations ***/
 133 static void       compute_border                             (EvView             *view,
 134                                                               int                 width,
 135                                                               int                 height,
 136                                                               GtkBorder          *border);
 137 static void       get_page_y_offset                          (EvView *view,
 138                                                               int page,
 139                                                               double zoom,
 140                                                               int *y_offset);
 141 static gboolean   get_page_extents                           (EvView             *view,
 142                                                               gint                page,
 143                                                               GdkRectangle       *page_area,
 144                                                               GtkBorder          *border);
 145 static void       view_rect_to_doc_rect                      (EvView             *view,
 146                                                               GdkRectangle       *view_rect,
 147                                                               GdkRectangle       *page_area,
 148                                                               EvRectangle        *doc_rect);
 149 static void       doc_rect_to_view_rect                      (EvView             *view,
 150                                                               int                 page,
 151                                                               EvRectangle        *doc_rect,
 152                                                               GdkRectangle       *view_rect);
 153 static void       find_page_at_location                      (EvView             *view,
 154                                                               gdouble             x,
 155                                                               gdouble             y,
 156                                                               gint               *page,
 157                                                               gint               *x_offset,
 158                                                               gint               *y_offset);
 159 static gboolean  doc_point_to_view_point                     (EvView       *view,
 160                                                               int           page,
 161                                                               EvPoint      *doc_point,
 162                                                               GdkPoint     *view_point);
 163 /*** Hyperrefs ***/
 164 static EvLink *   ev_view_get_link_at_location               (EvView  *view,
 165                                                               gdouble  x,
 166                                                               gdouble  y);
 167 static char*      tip_from_link                              (EvView             *view,
 168                                                               EvLink             *link);
 169 static void       handle_link_over_xy                        (EvView *view,
 170                                                               gint x,
 171                                                               gint y);
 172 /*** GtkWidget implementation ***/
 173 static void       ev_view_size_request_continuous_dual_page  (EvView             *view,
 174                                                               GtkRequisition     *requisition);
 175 static void       ev_view_size_request_continuous            (EvView             *view,
 176                                                               GtkRequisition     *requisition);
 177 static void       ev_view_size_request_dual_page             (EvView             *view,
 178                                                               GtkRequisition     *requisition);
 179 static void       ev_view_size_request_single_page           (EvView             *view,
 180                                                               GtkRequisition     *requisition);
 181 static void       ev_view_size_request                       (GtkWidget          *widget,
 182                                                               GtkRequisition     *requisition);
 183 static void       ev_view_size_allocate                      (GtkWidget          *widget,
 184                                                               GtkAllocation      *allocation);
 185 static void       ev_view_realize                            (GtkWidget          *widget);
 186 static gboolean   ev_view_scroll_event                       (GtkWidget          *widget,
 187                                                               GdkEventScroll     *event);
 188 static gboolean   ev_view_expose_event                       (GtkWidget          *widget,
 189                                                               GdkEventExpose     *event);
 190 static gboolean   ev_view_popup_menu                         (GtkWidget          *widget);
 191 static gboolean   ev_view_button_press_event                 (GtkWidget          *widget,
 192                                                               GdkEventButton     *event);
 193 static gboolean   ev_view_motion_notify_event                (GtkWidget          *widget,
 194                                                               GdkEventMotion     *event);
 195 static gboolean   ev_view_button_release_event               (GtkWidget          *widget,
 196                                                               GdkEventButton     *event);
 197 static gboolean   ev_view_enter_notify_event                 (GtkWidget          *widget,
 198                                                               GdkEventCrossing   *event);
 199 static gboolean   ev_view_leave_notify_event                 (GtkWidget          *widget,
 200                                                               GdkEventCrossing   *event);
 201 static void       ev_view_style_set                          (GtkWidget          *widget,
 202                                                               GtkStyle           *old_style);
 203
 204 static AtkObject *ev_view_get_accessible                     (GtkWidget *widget);
 205
 206 /*** Drawing ***/
 207 static guint32    ev_gdk_color_to_rgb                        (const GdkColor     *color);
 208 static void       draw_rubberband                            (GtkWidget          *widget,
 209                                                               GdkWindow          *window,
 210                                                               const GdkRectangle *rect,
 211                                                               guchar              alpha);
 212 static void       highlight_find_results                     (EvView             *view,
 213                                                               int                 page);
 214 static void       draw_one_page                              (EvView             *view,
 215                                                               gint                page,
 216                                                               GdkRectangle       *page_area,
 217                                                               GtkBorder          *border,
 218                                                               GdkRectangle       *expose_area,
 219                                                               gboolean           *page_ready);
 220 static void       draw_loading_text                          (EvView             *view,
 221                                                               GdkRectangle       *page_area,
 222                                                               GdkRectangle       *expose_area);
 223
 224 /*** Callbacks ***/
 225 static void       find_changed_cb                            (EvDocument         *document,
 226                                                               int                 page,
 227                                                               EvView             *view);
 228 static void       job_finished_cb                            (EvPixbufCache      *pixbuf_cache,
 229                                                               EvView             *view);
 230 static void       page_changed_cb                            (EvPageCache        *page_cache,
 231                                                               int                 new_page,
 232                                                               EvView             *view);
 233 static void       on_adjustment_value_changed                (GtkAdjustment      *adjustment,
 234                                                               EvView             *view);
 235
 236 /*** GObject ***/
 237 static void       ev_view_finalize                           (GObject            *object);
 238 static void       ev_view_destroy                            (GtkObject          *object);
 239 static void       ev_view_set_property                       (GObject            *object,
 240                                                               guint               prop_id,
 241                                                               const GValue       *value,
 242                                                               GParamSpec         *pspec);
 243 static void       ev_view_get_property                       (GObject            *object,
 244                                                               guint               prop_id,
 245                                                               GValue             *value,
 246                                                               GParamSpec         *pspec);
 247 static void       ev_view_class_init                         (EvViewClass        *class);
 248 static void       ev_view_init                               (EvView             *view);
 249
 250 /*** Zoom and sizing ***/
 251 static double   zoom_for_size_fit_width                      (int doc_width,
 252                                                               int doc_height,
 253                                                               int target_width,
 254                                                               int target_height,
 255                                                               int vsb_width);
 256 static double   zoom_for_size_fit_height                     (int doc_width,
 257                                                               int doc_height,
 258                                                               int target_width,
 259                                                               int target_height,
 260                                                               int vsb_height);
 261 static double   zoom_for_size_best_fit                       (int doc_width,
 262                                                               int doc_height,
 263                                                               int target_width,
 264                                                               int target_height,
 265                                                               int vsb_width,
 266                                                               int hsb_width);
 267 static void     ev_view_zoom_for_size_presentation           (EvView *view,
 268                                                               int     width,
 269                                                               int     height);
 270 static void     ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
 271                                                                 int     width,
 272                                                                 int     height,
 273                                                                 int     vsb_width,
 274                                                                 int     hsb_height);
 275 static void     ev_view_zoom_for_size_continuous               (EvView *view,
 276                                                                 int     width,
 277                                                                 int     height,
 278                                                                 int     vsb_width,
 279                                                                 int     hsb_height);
 280 static void     ev_view_zoom_for_size_dual_page                (EvView *view,
 281                                                                 int     width,
 282                                                                 int     height,
 283                                                                 int     vsb_width,
 284                                                                 int     hsb_height);
 285 static void     ev_view_zoom_for_size_single_page              (EvView *view,
 286                                                                 int     width,
 287                                                                 int     height,
 288                                                                 int     vsb_width,
 289                                                                 int     hsb_height);
 290 /*** Cursors ***/
 291 static GdkCursor* ev_view_create_invisible_cursor            (void);
 292 static void       ev_view_set_cursor                         (EvView             *view,
 293                                                               EvViewCursor        new_cursor);
 294
 295 /*** Status messages ***/
 296 static void       ev_view_set_status                         (EvView             *view,
 297                                                               const char         *message);
 298 static void       update_find_status_message                 (EvView             *view,
 299                                                               gboolean            this_page);
 300 static void       ev_view_set_find_status                    (EvView             *view,
 301                                                               const char         *message);
 302 /*** Find ***/
 303 static void       jump_to_find_result                        (EvView             *view);
 304 static void       jump_to_find_page                          (EvView             *view,
 305                                                               EvViewFindDirection direction,
 306                                                               gint                shift);
 307
 308 /*** Selection ***/
 309 static void       compute_selections                         (EvView             *view,
 310                                                               GdkPoint           *start,
 311                                                               GdkPoint           *stop);
 312 static void       clear_selection                            (EvView             *view);
 313 static void       selection_free                             (EvViewSelection    *selection);
 314 static char*      get_selected_text                          (EvView             *ev_view);
 315 static void       ev_view_primary_get_cb                     (GtkClipboard       *clipboard,
 316                                                               GtkSelectionData   *selection_data,
 317                                                               guint               info,
 318                                                               gpointer            data);
 319 static void       ev_view_primary_clear_cb                   (GtkClipboard       *clipboard,
 320                                                               gpointer            data);
 321 static void       ev_view_update_primary_selection           (EvView             *ev_view);
 322
 323 /*** Presentation ***/
 324 static void       ev_view_presentation_transition_start      (EvView             *ev_view);
 325 static void       ev_view_presentation_transition_stop       (EvView             *ev_view);
 326
 327
 328 G_DEFINE_TYPE (EvView, ev_view, GTK_TYPE_WIDGET)
 329
 330 static void
 331 scroll_to_current_page (EvView *view, GtkOrientation orientation)
 332 {
 333         GdkPoint view_point;
 334
 335         if (view->document == NULL) {
 336                 return;
 337         }
 338
 339         doc_point_to_view_point (view, view->current_page, &view->pending_point, &view_point);
 340
 341         if (orientation == GTK_ORIENTATION_VERTICAL) {
 342                 view->pending_point.y = 0;
 343         } else {
 344                 view->pending_point.x = 0;
 345         }
 346
 347         if (orientation == GTK_ORIENTATION_VERTICAL) {
 348                 if (view->continuous) {
 349                         gtk_adjustment_clamp_page (view->vadjustment,
 350                                                    view_point.y - view->spacing / 2,
 351                                                    view_point.y + view->vadjustment->page_size);
 352                 } else {
 353                         gtk_adjustment_set_value (view->vadjustment,
 354                                                   CLAMP (view_point.y,
 355                                                   view->vadjustment->lower,
 356                                                   view->vadjustment->upper -
 357                                                   view->vadjustment->page_size));
 358                 }
 359         } else {
 360                 if (view->dual_page) {
 361                         gtk_adjustment_clamp_page (view->hadjustment,
 362                                                    view_point.x,
 363                                                    view_point.x + view->hadjustment->page_size);
 364                 } else {
 365                         gtk_adjustment_set_value (view->hadjustment,
 366                                                   CLAMP (view_point.x,
 367                                                   view->hadjustment->lower,
 368                                                   view->hadjustment->upper -
 369                                                   view->hadjustment->page_size));
 370                 }
 371         }
 372 }
 373
 374 static void
 375 view_set_adjustment_values (EvView         *view,
 376                             GtkOrientation  orientation)
 377 {
 378         GtkWidget *widget = GTK_WIDGET (view);
 379         GtkAdjustment *adjustment;
 380         int requisition;
 381         int allocation;
 382
 383         double factor;
 384         gint new_value;
 385
 386         if (orientation == GTK_ORIENTATION_HORIZONTAL)  {
 387                 requisition = widget->requisition.width;
 388                 allocation = widget->allocation.width;
 389                 adjustment = view->hadjustment;
 390         } else {
 391                 requisition = widget->requisition.height;
 392                 allocation = widget->allocation.height;
 393                 adjustment = view->vadjustment;
 394         }
 395
 396         if (!adjustment)
 397                 return;
 398
 399         factor = 1.0;
 400         switch (view->pending_scroll) {
 401                 case SCROLL_TO_KEEP_POSITION:
 402                 case SCROLL_TO_FIND_LOCATION:
 403                         factor = (adjustment->value) / adjustment->upper;
 404                         break;
 405                 case SCROLL_TO_PAGE_POSITION:
 406                         break;
 407                 case SCROLL_TO_CENTER:
 408                         factor = (adjustment->value + adjustment->page_size * 0.5) / adjustment->upper;
 409                         break;
 410         }
 411
 412         adjustment->page_size = allocation;
 413         adjustment->step_increment = allocation * 0.1;
 414         adjustment->page_increment = allocation * 0.9;
 415         adjustment->lower = 0;
 416         adjustment->upper = MAX (allocation, requisition);
 417
 418         /*
 419          * We add 0.5 to the values before to average out our rounding errors.
 420          */
 421         switch (view->pending_scroll) {
 422                 case SCROLL_TO_KEEP_POSITION:
 423                 case SCROLL_TO_FIND_LOCATION:
 424                         new_value = CLAMP (adjustment->upper * factor + 0.5, 0, adjustment->upper - adjustment->page_size);
 425                         gtk_adjustment_set_value (adjustment, (int)new_value);
 426                         break;
 427                 case SCROLL_TO_PAGE_POSITION:
 428                         scroll_to_current_page (view, orientation);
 429                         break;
 430                 case SCROLL_TO_CENTER:
 431                         new_value = CLAMP (adjustment->upper * factor - adjustment->page_size * 0.5 + 0.5,
 432                                            0, adjustment->upper - adjustment->page_size);
 433                         gtk_adjustment_set_value (adjustment, (int)new_value);
 434                         break;
 435         }
 436
 437         gtk_adjustment_changed (adjustment);
 438 }
 439
 440 static void
 441 view_update_range_and_current_page (EvView *view)
 442 {
 443         gint current_page;
 444         gint best_current_page = -1;
 445
 446         /* Presentation trumps all other modes */
 447         if (view->presentation) {
 448                 view->start_page = view->current_page;
 449                 view->end_page = view->current_page;
 450         } else if (view->continuous) {
 451                 GdkRectangle current_area, unused, page_area;
 452                 GtkBorder border;
 453                 gboolean found = FALSE;
 454                 gint area_max = -1, area;
 455                 int i;
 456
 457                 if (!(view->vadjustment && view->hadjustment))
 458                         return;
 459
 460                 current_area.x = view->hadjustment->value;
 461                 current_area.width = view->hadjustment->upper;
 462                 current_area.y = view->vadjustment->value;
 463                 current_area.height = view->vadjustment->page_size;
 464
 465                 for (i = 0; i < ev_page_cache_get_n_pages (view->page_cache); i++) {
 466
 467                         get_page_extents (view, i, &page_area, &border);
 468
 469                         if (gdk_rectangle_intersect (&current_area, &page_area, &unused)) {
 470                                 area = unused.width * unused.height;
 471
 472                                 if (!found) {
 473                                         area_max = area;
 474                                         view->start_page = i;
 475                                         found = TRUE;
 476                                         best_current_page = i;
 477                                 }
 478                                 if (area > area_max) {
 479                                         best_current_page = (area == area_max) ? MIN (i, best_current_page) : i;
 480                                         area_max = area;
 481                                 }
 482
 483                                 view->end_page = i;
 484                         } else if (found) {
 485                                 break;
 486                         }
 487                 }
 488
 489         } else if (view->dual_page) {
 490                 if (view->current_page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) {
 491                         view->start_page = view->current_page;
 492                         if (view->current_page + 1 < ev_page_cache_get_n_pages (view->page_cache))
 493                                 view->end_page = view->start_page + 1;
 494                         else
 495                                 view->end_page = view->start_page;
 496                 } else {
 497                         if (view->current_page < 1)
 498                                 view->start_page = view->current_page;
 499                         else
 500                                 view->start_page = view->current_page - 1;
 501                         view->end_page = view->current_page;
 502                 }
 503         } else {
 504                 view->start_page = view->current_page;
 505                 view->end_page = view->current_page;
 506         }
 507
 508         best_current_page = MAX (best_current_page, view->start_page);
 509         current_page = ev_page_cache_get_current_page (view->page_cache);
 510
 511         if ((current_page != best_current_page) && (view->pending_scroll == SCROLL_TO_KEEP_POSITION)) {
 512                 view->current_page = best_current_page;
 513                 ev_page_cache_set_current_page (view->page_cache, best_current_page);
 514         }
 515
 516         ev_pixbuf_cache_set_page_range (view->pixbuf_cache,
 517                                         view->start_page,
 518                                         view->end_page,
 519                                         view->rotation,
 520                                         view->scale,
 521                                         view->selection_info.selections);
 522 }
 523
 524 static void
 525 set_scroll_adjustment (EvView *view,
 526                        GtkOrientation  orientation,
 527                        GtkAdjustment  *adjustment)
 528 {
 529         GtkAdjustment **to_set;
 530
 531         if (orientation == GTK_ORIENTATION_HORIZONTAL)
 532                 to_set = &view->hadjustment;
 533         else
 534                 to_set = &view->vadjustment;
 535
 536         if (*to_set != adjustment) {
 537                 if (*to_set) {
 538                         g_signal_handlers_disconnect_by_func (*to_set,
 539                                                               (gpointer) on_adjustment_value_changed,
 540                                                               view);
 541                         g_object_unref (*to_set);
 542                 }
 543
 544                 *to_set = adjustment;
 545                 view_set_adjustment_values (view, orientation);
 546
 547                 if (*to_set) {
 548                         g_object_ref (*to_set);
 549                         g_signal_connect (*to_set, "value_changed",
 550                                           G_CALLBACK (on_adjustment_value_changed), view);
 551                 }
 552         }
 553 }
 554
 555 static void
 556 ev_view_set_scroll_adjustments (EvView *view,
 557                                 GtkAdjustment  *hadjustment,
 558                                 GtkAdjustment  *vadjustment)
 559 {
 560         set_scroll_adjustment (view, GTK_ORIENTATION_HORIZONTAL, hadjustment);
 561         set_scroll_adjustment (view, GTK_ORIENTATION_VERTICAL, vadjustment);
 562
 563         on_adjustment_value_changed (NULL, view);
 564 }
 565
 566 static void
 567 add_scroll_binding_keypad (GtkBindingSet  *binding_set,
 568                            guint           keyval,
 569                            GdkModifierType modifiers,
 570                            EvScrollType    scroll,
 571                            gboolean        horizontal)
 572 {
 573   guint keypad_keyval = keyval - GDK_Left + GDK_KP_Left;
 574
 575   gtk_binding_entry_add_signal (binding_set, keyval, modifiers,
 576                                 "binding_activated", 2,
 577                                 EV_TYPE_SCROLL_TYPE, scroll,
 578                                 G_TYPE_BOOLEAN, horizontal);
 579   gtk_binding_entry_add_signal (binding_set, keypad_keyval, modifiers,
 580                                 "binding_activated", 2,
 581                                 EV_TYPE_SCROLL_TYPE, scroll,
 582                                 G_TYPE_BOOLEAN, horizontal);
 583 }
 584
 585 void
 586 ev_view_scroll (EvView        *view,
 587                 EvScrollType   scroll,
 588                 gboolean horizontal)
 589 {
 590         GtkAdjustment *adjustment;
 591         double value, increment;
 592         gboolean first_page = FALSE;
 593         gboolean last_page = FALSE;
 594
 595         view->jump_to_find_result = FALSE;
 596
 597         if (view->presentation || view->sizing_mode == EV_SIZING_BEST_FIT) {
 598                 switch (scroll) {
 599                         case EV_SCROLL_PAGE_BACKWARD:
 600                         case EV_SCROLL_STEP_BACKWARD:
 601                                 ev_view_previous_page (view);
 602                                 break;
 603                         case EV_SCROLL_PAGE_FORWARD:
 604                         case EV_SCROLL_STEP_FORWARD:
 605                                 ev_view_next_page (view);
 606                                 break;
 607                         default:
 608                                 break;
 609                 }
 610                 return;
 611         }
 612
 613         /* Assign values for increment and vertical adjustment */
 614         adjustment = horizontal ? view->hadjustment : view->vadjustment;
 615         increment = adjustment->page_size * 0.75;
 616         value = adjustment->value;
 617
 618         /* Assign boolean for first and last page */
 619         if (view->current_page == 0)
 620                 first_page = TRUE;
 621         if (view->current_page == ev_page_cache_get_n_pages (view->page_cache) - 1)
 622                 last_page = TRUE;
 623
 624         switch (scroll) {
 625                 case EV_SCROLL_PAGE_BACKWARD:
 626                         /* Do not jump backwards if at the first page */
 627                         if (value == (adjustment->lower) && first_page) {
 628                                 /* Do nothing */
 629                                 /* At the top of a page, assign the upper bound limit of previous page */
 630                         } else if (value == (adjustment->lower)) {
 631                                 value = adjustment->upper - adjustment->page_size;
 632                                 ev_view_previous_page (view);
 633                                 /* Jump to the top */
 634                         } else {
 635                                 value = MAX (value - increment, adjustment->lower);
 636                         }
 637                         break;
 638                 case EV_SCROLL_PAGE_FORWARD:
 639                         /* Do not jump forward if at the last page */
 640                         if (value == (adjustment->upper - adjustment->page_size) && last_page) {
 641                                 /* Do nothing */
 642                         /* At the bottom of a page, assign the lower bound limit of next page */
 643                         } else if (value == (adjustment->upper - adjustment->page_size)) {
 644                                 value = 0;
 645                                 ev_view_next_page (view);
 646                         /* Jump to the bottom */
 647                         } else {
 648                                 value = MIN (value + increment, adjustment->upper - adjustment->page_size);
 649                         }
 650                         break;
 651                 case EV_SCROLL_STEP_BACKWARD:
 652                         value -= adjustment->step_increment;
 653                         break;
 654                 case EV_SCROLL_STEP_FORWARD:
 655                         value += adjustment->step_increment;
 656                         break;
 657                 case EV_SCROLL_STEP_DOWN:
 658                         value -= adjustment->step_increment / 10;
 659                         break;
 660                 case EV_SCROLL_STEP_UP:
 661                         value += adjustment->step_increment / 10;
 662                         break;
 663                 default:
 664                         break;
 665         }
 666
 667         value = CLAMP (value, adjustment->lower,
 668                        adjustment->upper - adjustment->page_size);
 669
 670         gtk_adjustment_set_value (adjustment, value);
 671 }
 672
 673 #define MARGIN 5
 674
 675 static void
 676 ensure_rectangle_is_visible (EvView *view, GdkRectangle *rect)
 677 {
 678         GtkWidget *widget = GTK_WIDGET (view);
 679         GtkAdjustment *adjustment;
 680         int value;
 681
 682         view->pending_scroll = SCROLL_TO_FIND_LOCATION;
 683
 684         adjustment = view->vadjustment;
 685
 686         if (rect->y < adjustment->value) {
 687                 value = MAX (adjustment->lower, rect->y - MARGIN);
 688                 gtk_adjustment_set_value (view->vadjustment, value);
 689         } else if (rect->y + rect->height >
 690                    adjustment->value + widget->allocation.height) {
 691                 value = MIN (adjustment->upper, rect->y + rect->height -
 692                              widget->allocation.height + MARGIN);
 693                 gtk_adjustment_set_value (view->vadjustment, value);
 694         }
 695
 696         adjustment = view->hadjustment;
 697
 698         if (rect->x < adjustment->value) {
 699                 value = MAX (adjustment->lower, rect->x - MARGIN);
 700                 gtk_adjustment_set_value (view->hadjustment, value);
 701         } else if (rect->x + rect->height >
 702                    adjustment->value + widget->allocation.width) {
 703                 value = MIN (adjustment->upper, rect->x + rect->width -
 704                              widget->allocation.width + MARGIN);
 705                 gtk_adjustment_set_value (view->hadjustment, value);
 706         }
 707
 708         gtk_widget_queue_resize (GTK_WIDGET (view));
 709 }
 710
 711 /*** Geometry computations ***/
 712
 713 static void
 714 compute_border (EvView *view, int width, int height, GtkBorder *border)
 715 {
 716         if (view->presentation) {
 717                 border->left = 0;
 718                 border->right = 0;
 719                 border->top = 0;
 720                 border->bottom = 0;
 721         } else {
 722                 ev_document_misc_get_page_border_size (width, height, border);
 723         }
 724 }
 725
 726 static void
 727 get_page_y_offset (EvView *view, int page, double zoom, int *y_offset)
 728 {
 729         int max_width, offset;
 730         GtkBorder border;
 731
 732         g_return_if_fail (y_offset != NULL);
 733
 734         ev_page_cache_get_max_width (view->page_cache, view->rotation, zoom, &max_width);
 735
 736         compute_border (view, max_width, max_width, &border);
 737
 738         if (view->dual_page) {
 739                 ev_page_cache_get_height_to_page (view->page_cache, page,
 740                                                   view->rotation, zoom, NULL, &offset);
 741                 offset += ((page + ev_page_cache_get_dual_even_left (view->page_cache)) / 2 + 1) * view->spacing + ((page + ev_page_cache_get_dual_even_left (view->page_cache)) / 2 ) * (border.top + border.bottom);
 742         } else {
 743                 ev_page_cache_get_height_to_page (view->page_cache, page,
 744                                                   view->rotation, zoom, &offset, NULL);
 745                 offset += (page + 1) * view->spacing + page * (border.top + border.bottom);
 746         }
 747
 748         *y_offset = offset;
 749         return;
 750 }
 751
 752 static gboolean
 753 get_page_extents (EvView       *view,
 754                   gint          page,
 755                   GdkRectangle *page_area,
 756                   GtkBorder    *border)
 757 {
 758         GtkWidget *widget;
 759         int width, height;
 760
 761         widget = GTK_WIDGET (view);
 762
 763         /* Get the size of the page */
 764         ev_page_cache_get_size (view->page_cache, page,
 765                                 view->rotation,
 766                                 view->scale,
 767                                 &width, &height);
 768         compute_border (view, width, height, border);
 769         page_area->width = width + border->left + border->right;
 770         page_area->height = height + border->top + border->bottom;
 771
 772         if (view->presentation) {
 773                 page_area->x = (MAX (0, widget->allocation.width - width))/2;
 774                 page_area->y = (MAX (0, widget->allocation.height - height))/2;
 775         } else if (view->continuous) {
 776                 gint max_width;
 777                 gint x, y;
 778
 779                 ev_page_cache_get_max_width (view->page_cache, view->rotation,
 780                                              view->scale, &max_width);
 781                 max_width = max_width + border->left + border->right;
 782                 /* Get the location of the bounding box */
 783                 if (view->dual_page) {
 784                         x = view->spacing + ((page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) ? 0 : 1) * (max_width + view->spacing);
 785                         x = x + MAX (0, widget->allocation.width - (max_width * 2 + view->spacing * 3)) / 2;
 786                         if (page % 2 == ev_page_cache_get_dual_even_left (view->page_cache))
 787                                 x = x + (max_width - width - border->left - border->right);
 788                 } else {
 789                         x = view->spacing;
 790                         x = x + MAX (0, widget->allocation.width - (width + view->spacing * 2)) / 2;
 791                 }
 792
 793                 get_page_y_offset (view, page, view->scale, &y);
 794
 795                 page_area->x = x;
 796                 page_area->y = y;
 797         } else {
 798                 gint x, y;
 799                 if (view->dual_page) {
 800                         gint width_2, height_2;
 801                         gint max_width = width;
 802                         gint max_height = height;
 803                         GtkBorder overall_border;
 804                         gint other_page;
 805
 806                         other_page = (page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) ? page + 1: page - 1;
 807
 808                         /* First, we get the bounding box of the two pages */
 809                         if (other_page < ev_page_cache_get_n_pages (view->page_cache)
 810                             && (0 <= other_page)) {
 811                                 ev_page_cache_get_size (view->page_cache,
 812                                                         other_page,
 813                                                         view->rotation,
 814                                                         view->scale,
 815                                                         &width_2, &height_2);
 816                                 if (width_2 > width)
 817                                         max_width = width_2;
 818                                 if (height_2 > height)
 819                                         max_height = height_2;
 820                         }
 821                         compute_border (view, max_width, max_height, &overall_border);
 822
 823                         /* Find the offsets */
 824                         x = view->spacing;
 825                         y = view->spacing;
 826
 827                         /* Adjust for being the left or right page */
 828                         if (page % 2 == ev_page_cache_get_dual_even_left (view->page_cache))
 829                                 x = x + max_width - width;
 830                         else
 831                                 x = x + (max_width + overall_border.left + overall_border.right) + view->spacing;
 832
 833                         y = y + (max_height - height)/2;
 834
 835                         /* Adjust for extra allocation */
 836                         x = x + MAX (0, widget->allocation.width -
 837                                      ((max_width + overall_border.left + overall_border.right) * 2 + view->spacing * 3))/2;
 838                         y = y + MAX (0, widget->allocation.height - (height + view->spacing * 2))/2;
 839                 } else {
 840                         x = view->spacing;
 841                         y = view->spacing;
 842
 843                         /* Adjust for extra allocation */
 844                         x = x + MAX (0, widget->allocation.width - (width + border->left + border->right + view->spacing * 2))/2;
 845                         y = y + MAX (0, widget->allocation.height - (height + border->top + border->bottom +  view->spacing * 2))/2;
 846                 }
 847
 848                 page_area->x = x;
 849                 page_area->y = y;
 850         }
 851
 852         return TRUE;
 853 }
 854
 855 static void
 856 view_point_to_doc_point (EvView *view,
 857                          GdkPoint *view_point,
 858                          GdkRectangle *page_area,
 859                          double  *doc_point_x,
 860                          double  *doc_point_y)
 861 {
 862         *doc_point_x = (double) (view_point->x - page_area->x) / view->scale;
 863         *doc_point_y = (double) (view_point->y - page_area->y) / view->scale;
 864 }
 865
 866 static void
 867 view_rect_to_doc_rect (EvView *view,
 868                        GdkRectangle *view_rect,
 869                        GdkRectangle *page_area,
 870                        EvRectangle  *doc_rect)
 871 {
 872         doc_rect->x1 = (double) (view_rect->x - page_area->x) / view->scale;
 873         doc_rect->y1 = (double) (view_rect->y - page_area->y) / view->scale;
 874         doc_rect->x2 = doc_rect->x1 + (double) view_rect->width / view->scale;
 875         doc_rect->y2 = doc_rect->y1 + (double) view_rect->height / view->scale;
 876 }
 877
 878 static gboolean
 879 doc_point_to_view_point (EvView       *view,
 880                          int           page,
 881                          EvPoint      *doc_point,
 882                          GdkPoint     *view_point)
 883 {
 884         GdkRectangle page_area;
 885         GtkBorder border;
 886         double x, y, view_x, view_y;
 887         int width, height;
 888
 889         ev_page_cache_get_size (view->page_cache, page,
 890                                 view->rotation,
 891                                 1.0,
 892                                 &width, &height);
 893
 894         if (view->rotation == 0) {
 895                 x = doc_point->x;
 896                 y = doc_point->y;
 897         } else if (view->rotation == 90) {
 898                 x = width - doc_point->y;
 899                 y = doc_point->x;
 900         } else if (view->rotation == 180) {
 901                 x = width - doc_point->x;
 902                 y = height - doc_point->y;
 903         } else if (view->rotation == 270) {
 904                 x = doc_point->y;
 905                 y = height - doc_point->x;
 906         } else {
 907                 g_assert_not_reached ();
 908         }
 909
 910         get_page_extents (view, page, &page_area, &border);
 911
 912         view_x = x * view->scale;
 913         view_y = y * view->scale;
 914         view_point->x = view_x + page_area.x;
 915         view_point->y = view_y + page_area.y;
 916
 917         return (view_x > 0 && view_x <= page_area.width &&
 918                 view_y > 0 && view_y <= page_area.height);
 919 }
 920
 921 static void
 922 doc_rect_to_view_rect (EvView       *view,
 923                        int           page,
 924                        EvRectangle  *doc_rect,
 925                        GdkRectangle *view_rect)
 926 {
 927         GdkRectangle page_area;
 928         GtkBorder border;
 929         double x, y, w, h;
 930         int width, height;
 931
 932         ev_page_cache_get_size (view->page_cache, page,
 933                                 view->rotation,
 934                                 1.0,
 935                                 &width, &height);
 936
 937         if (view->rotation == 0) {
 938                 x = doc_rect->x1;
 939                 y = doc_rect->y1;
 940                 w = doc_rect->x2 - doc_rect->x1;
 941                 h = doc_rect->y2 - doc_rect->y1;
 942         } else if (view->rotation == 90) {
 943                 x = width - doc_rect->y2;
 944                 y = doc_rect->x1;
 945                 w = doc_rect->y2 - doc_rect->y1;
 946                 h = doc_rect->x2 - doc_rect->x1;
 947         } else if (view->rotation == 180) {
 948                 x = width - doc_rect->x2;
 949                 y = height - doc_rect->y2;
 950                 w = doc_rect->x2 - doc_rect->x1;
 951                 h = doc_rect->y2 - doc_rect->y1;
 952         } else if (view->rotation == 270) {
 953                 x = doc_rect->y1;
 954                 y = height - doc_rect->x2;
 955                 w = doc_rect->y2 - doc_rect->y1;
 956                 h = doc_rect->x2 - doc_rect->x1;
 957         } else {
 958                 g_assert_not_reached ();
 959         }
 960
 961         get_page_extents (view, page, &page_area, &border);
 962
 963         view_rect->x = x * view->scale + page_area.x;
 964         view_rect->y = y * view->scale + page_area.y;
 965         view_rect->width = w * view->scale;
 966         view_rect->height = h * view->scale;
 967 }
 968
 969 static void
 970 find_page_at_location (EvView  *view,
 971                        gdouble  x,
 972                        gdouble  y,
 973                        gint    *page,
 974                        gint    *x_offset,
 975                        gint    *y_offset)
 976 {
 977         int i;
 978
 979         if (view->document == NULL)
 980                 return;
 981
 982         g_assert (page);
 983         g_assert (x_offset);
 984         g_assert (y_offset);
 985
 986         for (i = view->start_page; i <= view->end_page; i++) {
 987                 GdkRectangle page_area;
 988                 GtkBorder border;
 989
 990                 if (! get_page_extents (view, i, &page_area, &border))
 991                         continue;
 992
 993                 if ((x >= page_area.x + border.left) &&
 994                     (x < page_area.x + page_area.width - border.right) &&
 995                     (y >= page_area.y + border.top) &&
 996                     (y < page_area.y + page_area.height - border.bottom)) {
 997                         *page = i;
 998                         *x_offset = x - (page_area.x + border.left);
 999                         *y_offset = y - (page_area.y + border.top);
1000                         return;
1001                 }
1002         }
1003
1004         *page = -1;
1005 }
1006
1007 static gboolean
1008 location_in_text (EvView  *view,
1009                   gdouble  x,
1010                   gdouble  y)
1011 {
1012         GdkRegion *region;
1013         gint page = -1;
1014         gint x_offset = 0, y_offset = 0;
1015
1016         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1017
1018         if (page == -1)
1019                 return FALSE;
1020
1021         region = ev_pixbuf_cache_get_text_mapping (view->pixbuf_cache, page);
1022
1023         if (region)
1024                 return gdk_region_point_in (region, x_offset / view->scale, y_offset / view->scale);
1025         else
1026                 return FALSE;
1027 }
1028
1029 static int
1030 ev_view_get_width (EvView *view)
1031 {
1032         return GTK_WIDGET (view)->allocation.width;
1033 }
1034
1035 static int
1036 ev_view_get_height (EvView *view)
1037 {
1038         return GTK_WIDGET (view)->allocation.height;
1039 }
1040
1041 static gboolean
1042 location_in_selected_text (EvView  *view,
1043                            gdouble  x,
1044                            gdouble  y)
1045 {
1046         gint page = -1;
1047         gint x_offset = 0, y_offset = 0;
1048         EvViewSelection *selection;
1049         GList *l = NULL;
1050
1051         for (l = view->selection_info.selections; l != NULL; l = l->next) {
1052                 selection = (EvViewSelection *)l->data;
1053
1054                 find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1055
1056                 if (page != selection->page)
1057                         continue;
1058
1059                 if (selection->covered_region &&
1060                     gdk_region_point_in (selection->covered_region, x_offset, y_offset))
1061                         return TRUE;
1062         }
1063
1064         return FALSE;
1065 }
1066
1067 static gboolean
1068 get_doc_point_from_offset (EvView *view,
1069                            gint    page,
1070                            gint    x_offset,
1071                            gint    y_offset,
1072                            gint   *x_new,
1073                            gint   *y_new)
1074 {
1075         int width, height;
1076         double x, y;
1077
1078         ev_page_cache_get_size (view->page_cache, page,
1079                                 view->rotation,
1080                                 1.0,
1081                                 &width, &height);
1082
1083         x_offset = x_offset / view->scale;
1084         y_offset = y_offset / view->scale;
1085
1086         if (view->rotation == 0) {
1087                 x = x_offset;
1088                 y = y_offset;
1089         } else if (view->rotation == 90) {
1090                 x = y_offset;
1091                 y = width - x_offset;
1092         } else if (view->rotation == 180) {
1093                 x = width - x_offset;
1094                 y = height - y_offset;
1095         } else if (view->rotation == 270) {
1096                 x = height - y_offset;
1097                 y = x_offset;
1098         } else {
1099                 g_assert_not_reached ();
1100         }
1101
1102         *x_new = x;
1103         *y_new = y;
1104
1105         return TRUE;
1106 }
1107
1108 /*** Hyperref ***/
1109 static EvLink *
1110 ev_view_get_link_at_location (EvView  *view,
1111                               gdouble  x,
1112                               gdouble  y)
1113 {
1114         gint page = -1;
1115         gint x_offset = 0, y_offset = 0;
1116         gint x_new = 0, y_new = 0;
1117         GList *link_mapping;
1118
1119         if (!EV_IS_DOCUMENT_LINKS (view->document))
1120                 return NULL;
1121
1122         x += view->scroll_x;
1123         y += view->scroll_y;
1124
1125         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1126
1127         if (page == -1)
1128                 return NULL;
1129
1130
1131         if (get_doc_point_from_offset (view, page, x_offset,
1132                                        y_offset, &x_new, &y_new) == FALSE)
1133                 return NULL;
1134
1135         link_mapping = ev_pixbuf_cache_get_link_mapping (view->pixbuf_cache, page);
1136
1137         if (link_mapping)
1138                 return ev_link_mapping_find (link_mapping, x_new, y_new);
1139         else
1140                 return NULL;
1141 }
1142
1143 static void
1144 goto_fitr_dest (EvView *view, EvLinkDest *dest)
1145 {
1146         EvPoint doc_point;
1147         double zoom;
1148
1149         zoom = zoom_for_size_best_fit (ev_link_dest_get_right (dest) - ev_link_dest_get_left (dest),
1150                                        ev_link_dest_get_bottom (dest) - ev_link_dest_get_top (dest),
1151                                        ev_view_get_width (view),
1152                                        ev_view_get_height (view), 0, 0);
1153
1154         ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1155         ev_view_set_zoom (view, zoom, FALSE);
1156
1157         doc_point.x = ev_link_dest_get_left (dest);
1158         doc_point.y = ev_link_dest_get_top (dest);
1159
1160         view->current_page = ev_link_dest_get_page (dest);
1161         view->pending_point = doc_point;
1162         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1163
1164         gtk_widget_queue_resize (GTK_WIDGET (view));
1165 }
1166
1167 static void
1168 goto_fitv_dest (EvView *view, EvLinkDest *dest)
1169 {
1170         EvPoint doc_point;
1171         int doc_width, doc_height, page;
1172         double zoom;
1173
1174         page = ev_link_dest_get_page (dest);
1175         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height);
1176
1177         doc_point.x = ev_link_dest_get_left (dest);
1178         doc_point.y = 0;
1179
1180         zoom = zoom_for_size_fit_height (doc_width - doc_point.x , doc_height,
1181                                          ev_view_get_width (view),
1182                                          ev_view_get_height (view), 0);
1183
1184         ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1185         ev_view_set_zoom (view, zoom, FALSE);
1186
1187         view->current_page = page;
1188         view->pending_point = doc_point;
1189         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1190
1191         gtk_widget_queue_resize (GTK_WIDGET (view));
1192 }
1193
1194 static void
1195 goto_fith_dest (EvView *view, EvLinkDest *dest)
1196 {
1197         EvPoint doc_point;
1198         int doc_width, doc_height, page;
1199         double zoom;
1200
1201         page = ev_link_dest_get_page (dest);
1202         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height);
1203
1204         doc_point.x = 0;
1205         doc_point.y = ev_link_dest_get_top (dest);
1206
1207         zoom = zoom_for_size_fit_width (doc_width, ev_link_dest_get_top (dest),
1208                                         ev_view_get_width (view),
1209                                         ev_view_get_height (view), 0);
1210
1211         ev_view_set_sizing_mode (view, EV_SIZING_FIT_WIDTH);
1212         ev_view_set_zoom (view, zoom, FALSE);
1213
1214         view->current_page = page;
1215         view->pending_point = doc_point;
1216         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1217
1218         gtk_widget_queue_resize (GTK_WIDGET (view));
1219 }
1220
1221 static void
1222 goto_fit_dest (EvView *view, EvLinkDest *dest)
1223 {
1224         double zoom;
1225         int doc_width, doc_height;
1226         int page;
1227
1228         page = ev_link_dest_get_page (dest);
1229         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height);
1230
1231         zoom = zoom_for_size_best_fit (doc_width, doc_height, ev_view_get_width (view),
1232                                        ev_view_get_height (view), 0, 0);
1233
1234         ev_view_set_sizing_mode (view, EV_SIZING_BEST_FIT);
1235         ev_view_set_zoom (view, zoom, FALSE);
1236
1237         view->current_page = page;
1238         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1239
1240         gtk_widget_queue_resize (GTK_WIDGET (view));
1241 }
1242
1243 static void
1244 goto_xyz_dest (EvView *view, EvLinkDest *dest)
1245 {
1246         EvPoint doc_point;
1247         gint page;
1248         double zoom;
1249
1250         zoom = ev_link_dest_get_zoom (dest);
1251         page = ev_link_dest_get_page (dest);
1252
1253         if (zoom > 1) {
1254                 ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1255                 ev_view_set_zoom (view, zoom, FALSE);
1256         }
1257
1258         doc_point.x = ev_link_dest_get_left (dest);
1259         doc_point.y = ev_link_dest_get_top (dest);
1260
1261         view->current_page = page;
1262         view->pending_point = doc_point;
1263         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1264
1265         gtk_widget_queue_resize (GTK_WIDGET (view));
1266 }
1267
1268 static void
1269 goto_dest (EvView *view, EvLinkDest *dest)
1270 {
1271         EvLinkDestType type;
1272         int page, n_pages, current_page;
1273
1274         page = ev_link_dest_get_page (dest);
1275         n_pages = ev_page_cache_get_n_pages (view->page_cache);
1276
1277         if (page < 0 || page >= n_pages)
1278                 return;
1279
1280         current_page = view->current_page;
1281
1282         type = ev_link_dest_get_dest_type (dest);
1283
1284         switch (type) {
1285                 case EV_LINK_DEST_TYPE_PAGE:
1286                         ev_page_cache_set_current_page (view->page_cache, page);
1287                         break;
1288                 case EV_LINK_DEST_TYPE_FIT:
1289                         goto_fit_dest (view, dest);
1290                         break;
1291                 case EV_LINK_DEST_TYPE_FITH:
1292                         goto_fith_dest (view, dest);
1293                         break;
1294                 case EV_LINK_DEST_TYPE_FITV:
1295                         goto_fitv_dest (view, dest);
1296                         break;
1297                 case EV_LINK_DEST_TYPE_FITR:
1298                         goto_fitr_dest (view, dest);
1299                         break;
1300                 case EV_LINK_DEST_TYPE_XYZ:
1301                         goto_xyz_dest (view, dest);
1302                         break;
1303                 case EV_LINK_DEST_TYPE_PAGE_LABEL:
1304                         ev_page_cache_set_page_label (view->page_cache, ev_link_dest_get_page_label (dest));
1305                         break;
1306                 default:
1307                         g_assert_not_reached ();
1308         }
1309
1310         if (current_page != view->current_page)
1311                 ev_page_cache_set_current_page (view->page_cache,
1312                                                 view->current_page);
1313 }
1314
1315 void
1316 ev_view_goto_dest (EvView *view, EvLinkDest *dest)
1317 {
1318         EvLinkDestType type;
1319
1320         type = ev_link_dest_get_dest_type (dest);
1321
1322         if (type == EV_LINK_DEST_TYPE_NAMED) {
1323                 EvLinkDest  *dest2;
1324                 const gchar *named_dest;
1325
1326                 named_dest = ev_link_dest_get_named_dest (dest);
1327                 dest2 = ev_document_links_find_link_dest (EV_DOCUMENT_LINKS (view->document),
1328                                                           named_dest);
1329                 if (dest2) {
1330                         goto_dest (view, dest2);
1331                         g_object_unref (dest2);
1332                 }
1333
1334                 return;
1335         }
1336
1337         goto_dest (view, dest);
1338 }
1339
1340 void
1341 ev_view_handle_link (EvView *view, EvLink *link)
1342 {
1343         EvLinkAction    *action = NULL;
1344         EvLinkActionType type;
1345
1346         action = ev_link_get_action (link);
1347         if (!action)
1348                 return;
1349
1350         type = ev_link_action_get_action_type (action);
1351
1352         switch (type) {
1353                 case EV_LINK_ACTION_TYPE_GOTO_DEST: {
1354                         EvLinkDest *dest;
1355
1356                         dest = ev_link_action_get_dest (action);
1357                         ev_view_goto_dest (view, dest);
1358                 }
1359                         break;
1360                 case EV_LINK_ACTION_TYPE_GOTO_REMOTE:
1361                 case EV_LINK_ACTION_TYPE_EXTERNAL_URI:
1362                 case EV_LINK_ACTION_TYPE_LAUNCH:
1363                 case EV_LINK_ACTION_TYPE_NAMED:
1364                         g_signal_emit (view, signals[SIGNAL_EXTERNAL_LINK], 0, action);
1365                         break;
1366         }
1367 }
1368
1369 static gchar *
1370 page_label_from_dest (EvView *view, EvLinkDest *dest)
1371 {
1372         EvLinkDestType type;
1373         gchar *msg = NULL;
1374
1375         type = ev_link_dest_get_dest_type (dest);
1376
1377         switch (type) {
1378                 case EV_LINK_DEST_TYPE_NAMED: {
1379                         EvLinkDest  *dest2;
1380                         const gchar *named_dest;
1381
1382                         named_dest = ev_link_dest_get_named_dest (dest);
1383                         dest2 = ev_document_links_find_link_dest (EV_DOCUMENT_LINKS (view->document),
1384                                                                   named_dest);
1385                         if (dest2) {
1386                                 msg = ev_page_cache_get_page_label (view->page_cache,
1387                                                                     ev_link_dest_get_page (dest2));
1388                                 g_object_unref (dest2);
1389                         }
1390                 }
1391
1392                         break;
1393                 default:
1394                         msg = ev_page_cache_get_page_label (view->page_cache,
1395                                                             ev_link_dest_get_page (dest));
1396         }
1397
1398         return msg;
1399 }
1400
1401 static char *
1402 tip_from_action_named (EvLinkAction *action)
1403 {
1404         const gchar *name = ev_link_action_get_name (action);
1405
1406         if (g_ascii_strcasecmp (name, "FirstPage") == 0) {
1407                 return g_strdup (_("Go to first page"));
1408         } else if (g_ascii_strcasecmp (name, "PrevPage") == 0) {
1409                 return g_strdup (_("Go to previous page"));
1410         } else if (g_ascii_strcasecmp (name, "NextPage") == 0) {
1411                 return g_strdup (_("Go to next page"));
1412         } else if (g_ascii_strcasecmp (name, "LastPage") == 0) {
1413                 return g_strdup (_("Go to last page"));
1414         } else if (g_ascii_strcasecmp (name, "GoToPage") == 0) {
1415                 return g_strdup (_("Go to page"));
1416         } else if (g_ascii_strcasecmp (name, "Find") == 0) {
1417                 return g_strdup (_("Find"));
1418         }
1419
1420         return NULL;
1421 }
1422
1423 static char *
1424 tip_from_link (EvView *view, EvLink *link)
1425 {
1426         EvLinkAction *action;
1427         EvLinkActionType type;
1428         char *msg = NULL;
1429         char *page_label;
1430         const char *title;
1431
1432         action = ev_link_get_action (link);
1433         title = ev_link_get_title (link);
1434
1435         if (!action)
1436                 return title ? g_strdup (title) : NULL;
1437
1438         type = ev_link_action_get_action_type (action);
1439
1440         switch (type) {
1441                 case EV_LINK_ACTION_TYPE_GOTO_DEST:
1442                         page_label = page_label_from_dest (view,
1443                                                            ev_link_action_get_dest (action));
1444                         msg = g_strdup_printf (_("Go to page %s"), page_label);
1445                         g_free (page_label);
1446                         break;
1447                 case EV_LINK_ACTION_TYPE_GOTO_REMOTE:
1448                         if (title) {
1449                                 msg = g_strdup_printf (_("Go to %s on file “%s”"), title,
1450                                                        ev_link_action_get_filename (action));
1451                         } else {
1452                                 msg = g_strdup_printf (_("Go to file “%s”"),
1453                                                        ev_link_action_get_filename (action));
1454                         }
1455
1456                         break;
1457                 case EV_LINK_ACTION_TYPE_EXTERNAL_URI:
1458                         msg = g_strdup (ev_link_action_get_uri (action));
1459                         break;
1460                 case EV_LINK_ACTION_TYPE_LAUNCH:
1461                         msg = g_strdup_printf (_("Launch %s"),
1462                                                ev_link_action_get_filename (action));
1463                         break;
1464                 case EV_LINK_ACTION_TYPE_NAMED:
1465                         msg = tip_from_action_named (action);
1466                         break;
1467                 default:
1468                         if (title)
1469                                 msg = g_strdup (title);
1470                         break;
1471         }
1472
1473         return msg;
1474 }
1475
1476 static void
1477 handle_link_over_xy (EvView *view, gint x, gint y)
1478 {
1479         EvLink *link;
1480
1481         link = ev_view_get_link_at_location (view, x, y);
1482
1483         if (view->link_tooltip == NULL) {
1484                 view->link_tooltip = ev_tooltip_new (GTK_WIDGET (view));
1485         }
1486
1487         if (view->hovered_link != link) {
1488                 view->hovered_link = link;
1489                 ev_tooltip_deactivate (EV_TOOLTIP (view->link_tooltip));
1490         }
1491
1492         if (link) {
1493                 char *msg = tip_from_link (view, link);
1494
1495                 if (msg && g_utf8_validate (msg, -1, NULL)) {
1496                         EvTooltip *tooltip = EV_TOOLTIP (view->link_tooltip);
1497
1498                         ev_tooltip_set_position (tooltip, x, y);
1499                         ev_tooltip_set_text (tooltip, msg);
1500                         ev_tooltip_activate (tooltip);
1501                 }
1502                 g_free (msg);
1503
1504                 ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
1505         } else if (location_in_text (view, x + view->scroll_x, y + view->scroll_y)) {
1506                 ev_view_set_cursor (view, EV_VIEW_CURSOR_IBEAM);
1507         } else {
1508                 ev_view_set_status (view, NULL);
1509                 if (view->cursor == EV_VIEW_CURSOR_LINK ||
1510                     view->cursor == EV_VIEW_CURSOR_IBEAM)
1511                         ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1512         }
1513         return;
1514 }
1515
1516 /*** Images ***/
1517 static EvImage *
1518 ev_view_get_image_at_location (EvView  *view,
1519                                gdouble  x,
1520                                gdouble  y)
1521 {
1522         gint page = -1;
1523         gint x_offset = 0, y_offset = 0;
1524         gint x_new = 0, y_new = 0;
1525         GList *image_mapping;
1526
1527         if (!EV_IS_DOCUMENT_IMAGES (view->document))
1528                 return NULL;
1529
1530         x += view->scroll_x;
1531         y += view->scroll_y;
1532
1533         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1534
1535         if (page == -1)
1536                 return NULL;
1537
1538         if (get_doc_point_from_offset (view, page, x_offset,
1539                                        y_offset, &x_new, &y_new) == FALSE)
1540                 return NULL;
1541
1542         image_mapping = ev_pixbuf_cache_get_image_mapping (view->pixbuf_cache, page);
1543
1544         if (image_mapping)
1545                 return ev_image_mapping_find (image_mapping, x_new, y_new);
1546         else
1547                 return NULL;
1548 }
1549
1550 /*** GtkWidget implementation ***/
1551
1552 static void
1553 ev_view_size_request_continuous_dual_page (EvView         *view,
1554                                            GtkRequisition *requisition)
1555 {
1556         int max_width;
1557         gint n_pages;
1558         GtkBorder border;
1559
1560         ev_page_cache_get_max_width (view->page_cache, view->rotation,
1561                                      view->scale, &max_width);
1562         compute_border (view, max_width, max_width, &border);
1563
1564         n_pages = ev_page_cache_get_n_pages (view->page_cache) + 1;
1565
1566         requisition->width = (max_width + border.left + border.right) * 2 + (view->spacing * 3);
1567         get_page_y_offset (view, n_pages, view->scale, &requisition->height);
1568
1569         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1570                 requisition->width = 1;
1571         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1572                 requisition->width = 1;
1573                 /* FIXME: This could actually be set on one page docs or docs
1574                  * with a strange aspect ratio. */
1575                 /* requisition->height = 1;*/
1576         }
1577 }
1578
1579 static void
1580 ev_view_size_request_continuous (EvView         *view,
1581                                  GtkRequisition *requisition)
1582 {
1583         int max_width;
1584         int n_pages;
1585         GtkBorder border;
1586
1587
1588         ev_page_cache_get_max_width (view->page_cache, view->rotation,
1589                                      view->scale, &max_width);
1590         n_pages = ev_page_cache_get_n_pages (view->page_cache);
1591         compute_border (view, max_width, max_width, &border);
1592
1593         requisition->width = max_width + (view->spacing * 2) + border.left + border.right;
1594         get_page_y_offset (view, n_pages, view->scale, &requisition->height);
1595
1596         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1597                 requisition->width = 1;
1598         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1599                 requisition->width = 1;
1600                 /* FIXME: This could actually be set on one page docs or docs
1601                  * with a strange aspect ratio. */
1602                 /* requisition->height = 1;*/
1603         }
1604 }
1605
1606 static void
1607 ev_view_size_request_dual_page (EvView         *view,
1608                                 GtkRequisition *requisition)
1609 {
1610         GtkBorder border;
1611         gint width, height;
1612
1613         /* Find the largest of the two. */
1614         ev_page_cache_get_size (view->page_cache,
1615                                 view->current_page,
1616                                 view->rotation,
1617                                 view->scale,
1618                                 &width, &height);
1619         if (view->current_page + 1 < ev_page_cache_get_n_pages (view->page_cache)) {
1620                 gint width_2, height_2;
1621                 ev_page_cache_get_size (view->page_cache,
1622                                         view->current_page + 1,
1623                                         view->rotation,
1624                                         view->scale,
1625                                         &width_2, &height_2);
1626                 if (width_2 > width) {
1627                         width = width_2;
1628                         height = height_2;
1629                 }
1630         }
1631         compute_border (view, width, height, &border);
1632
1633         requisition->width = ((width + border.left + border.right) * 2) +
1634                 (view->spacing * 3);
1635         requisition->height = (height + border.top + border.bottom) +
1636                 (view->spacing * 2);
1637
1638         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1639                 requisition->width = 1;
1640         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1641                 requisition->width = 1;
1642                 requisition->height = 1;
1643         }
1644 }
1645
1646 static void
1647 ev_view_size_request_single_page (EvView         *view,
1648                                   GtkRequisition *requisition)
1649 {
1650         GtkBorder border;
1651         gint width, height;
1652
1653         ev_page_cache_get_size (view->page_cache,
1654                                 view->current_page,
1655                                 view->rotation,
1656                                 view->scale,
1657                                 &width, &height);
1658         compute_border (view, width, height, &border);
1659
1660         requisition->width = width + border.left + border.right + (2 * view->spacing);
1661         requisition->height = height + border.top + border.bottom + (2 * view->spacing);
1662
1663         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1664                 requisition->width = 1;
1665                 requisition->height = height + border.top + border.bottom + (2 * view->spacing);
1666         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1667                 requisition->width = 1;
1668                 requisition->height = 1;
1669         }
1670 }
1671
1672 static void
1673 ev_view_size_request (GtkWidget      *widget,
1674                       GtkRequisition *requisition)
1675 {
1676         EvView *view = EV_VIEW (widget);
1677
1678         if (view->document == NULL) {
1679                 requisition->width = 1;
1680                 requisition->height = 1;
1681                 return;
1682         }
1683
1684         if (view->presentation) {
1685                 requisition->width = 1;
1686                 requisition->height = 1;
1687                 return;
1688         }
1689
1690         if (view->continuous && view->dual_page)
1691                 ev_view_size_request_continuous_dual_page (view, requisition);
1692         else if (view->continuous)
1693                 ev_view_size_request_continuous (view, requisition);
1694         else if (view->dual_page)
1695                 ev_view_size_request_dual_page (view, requisition);
1696         else
1697                 ev_view_size_request_single_page (view, requisition);
1698 }
1699
1700 static void
1701 ev_view_size_allocate (GtkWidget      *widget,
1702                        GtkAllocation  *allocation)
1703 {
1704         EvView *view = EV_VIEW (widget);
1705
1706         GTK_WIDGET_CLASS (ev_view_parent_class)->size_allocate (widget, allocation);
1707
1708         if (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
1709             view->sizing_mode == EV_SIZING_BEST_FIT) {
1710
1711                 g_signal_emit (view, signals[SIGNAL_ZOOM_INVALID], 0);
1712
1713                 ev_view_size_request (widget, &widget->requisition);
1714         }
1715
1716         view_set_adjustment_values (view, GTK_ORIENTATION_HORIZONTAL);
1717         view_set_adjustment_values (view, GTK_ORIENTATION_VERTICAL);
1718
1719         if (view->document)
1720                 view_update_range_and_current_page (view);
1721
1722         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
1723         view->pending_resize = FALSE;
1724 }
1725
1726 static void
1727 ev_view_realize (GtkWidget *widget)
1728 {
1729         EvView *view = EV_VIEW (widget);
1730         GdkWindowAttr attributes;
1731
1732         GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
1733
1734         attributes.window_type = GDK_WINDOW_CHILD;
1735         attributes.wclass = GDK_INPUT_OUTPUT;
1736         attributes.visual = gtk_widget_get_visual (widget);
1737         attributes.colormap = gtk_widget_get_colormap (widget);
1738
1739         attributes.x = widget->allocation.x;
1740         attributes.y = widget->allocation.y;
1741         attributes.width = widget->allocation.width;
1742         attributes.height = widget->allocation.height;
1743         attributes.event_mask = GDK_EXPOSURE_MASK |
1744                                 GDK_BUTTON_PRESS_MASK |
1745                                 GDK_BUTTON_RELEASE_MASK |
1746                                 GDK_SCROLL_MASK |
1747                                 GDK_KEY_PRESS_MASK |
1748                                 GDK_POINTER_MOTION_MASK |
1749                                 GDK_POINTER_MOTION_HINT_MASK |
1750                                 GDK_ENTER_NOTIFY_MASK |
1751                                 GDK_LEAVE_NOTIFY_MASK;
1752
1753         widget->window = gdk_window_new (gtk_widget_get_parent_window (widget),
1754                                          &attributes,
1755                                          GDK_WA_X | GDK_WA_Y |
1756                                          GDK_WA_COLORMAP |
1757                                          GDK_WA_VISUAL);
1758         gdk_window_set_user_data (widget->window, widget);
1759         widget->style = gtk_style_attach (widget->style, widget->window);
1760
1761         if (view->presentation)
1762                 gdk_window_set_background (widget->window, &widget->style->black);
1763         else
1764                 gdk_window_set_background (widget->window, &widget->style->mid [GTK_STATE_NORMAL]);
1765 }
1766
1767 static gboolean
1768 ev_view_scroll_event (GtkWidget *widget, GdkEventScroll *event)
1769 {
1770         EvView *view = EV_VIEW (widget);
1771         guint state;
1772
1773         state = event->state & gtk_accelerator_get_default_mod_mask ();
1774
1775         if (state == GDK_CONTROL_MASK && view->presentation == FALSE) {
1776                 ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1777
1778                 if (event->direction == GDK_SCROLL_UP ||
1779                     event->direction == GDK_SCROLL_LEFT) {
1780                         if (ev_view_can_zoom_in (view)) {
1781                                 ev_view_zoom_in (view);
1782                         }
1783                 } else {
1784                         if (ev_view_can_zoom_out (view)) {
1785                                 ev_view_zoom_out (view);
1786                         }
1787                 }
1788
1789                 return TRUE;
1790         }
1791
1792         view->jump_to_find_result = FALSE;
1793         /* Shift+Wheel scrolls the in the perpendicular direction */
1794         if (state & GDK_SHIFT_MASK) {
1795                 if (event->direction == GDK_SCROLL_UP)
1796                         event->direction = GDK_SCROLL_LEFT;
1797                 if (event->direction == GDK_SCROLL_LEFT)
1798                         event->direction = GDK_SCROLL_UP;
1799                 if (event->direction == GDK_SCROLL_DOWN)
1800                         event->direction = GDK_SCROLL_RIGHT;
1801                 if (event->direction == GDK_SCROLL_RIGHT)
1802                         event->direction = GDK_SCROLL_DOWN;
1803
1804                 event->state &= ~GDK_SHIFT_MASK;
1805                 state &= ~GDK_SHIFT_MASK;
1806         }
1807
1808         if (state == 0 && view->presentation) {
1809                 switch (event->direction) {
1810                         case GDK_SCROLL_DOWN:
1811                         case GDK_SCROLL_RIGHT:
1812                                 ev_view_next_page (view);
1813                                 break;
1814                         case GDK_SCROLL_UP:
1815                         case GDK_SCROLL_LEFT:
1816                                 ev_view_previous_page (view);
1817                                 break;
1818                 }
1819
1820                 return TRUE;
1821         }
1822
1823         return FALSE;
1824 }
1825
1826 static EvViewSelection *
1827 find_selection_for_page (EvView *view,
1828                          gint    page)
1829 {
1830         GList *list;
1831
1832         for (list = view->selection_info.selections; list != NULL; list = list->next) {
1833                 EvViewSelection *selection;
1834
1835                 selection = (EvViewSelection *) list->data;
1836
1837                 if (selection->page == page)
1838                         return selection;
1839         }
1840
1841         return NULL;
1842 }
1843
1844 static void
1845 draw_end_presentation_page (EvView       *view,
1846                             GdkRectangle *page_area)
1847 {
1848         PangoLayout *layout;
1849         PangoFontDescription *font_desc;
1850         gchar *markup;
1851         const gchar *text = _("End of presentation. Press Escape to exit.");
1852
1853         if (view->presentation_state != EV_PRESENTATION_END)
1854                 return;
1855
1856         layout = gtk_widget_create_pango_layout (GTK_WIDGET (view), NULL);
1857         markup = g_strdup_printf ("<span foreground=\"white\">%s</span>", text);
1858         pango_layout_set_markup (layout, markup, -1);
1859         g_free (markup);
1860
1861         font_desc = pango_font_description_new ();
1862         pango_font_description_set_size (font_desc, 16 * PANGO_SCALE);
1863         pango_layout_set_font_description (layout, font_desc);
1864
1865         gtk_paint_layout (GTK_WIDGET (view)->style,
1866                           GTK_WIDGET (view)->window,
1867                           GTK_WIDGET_STATE (view),
1868                           FALSE,
1869                           page_area,
1870                           GTK_WIDGET (view),
1871                           NULL,
1872                           page_area->x + 15,
1873                           page_area->y + 15,
1874                           layout);
1875
1876         pango_font_description_free (font_desc);
1877         g_object_unref (layout);
1878 }
1879
1880 static gboolean
1881 ev_view_expose_event (GtkWidget      *widget,
1882                       GdkEventExpose *event)
1883 {
1884         EvView *view = EV_VIEW (widget);
1885         int i;
1886
1887         if (view->presentation) {
1888                 switch (view->presentation_state) {
1889                         case EV_PRESENTATION_END: {
1890                                 GdkRectangle area = {0};
1891
1892                                 area.width = widget->allocation.width;
1893                                 area.height = widget->allocation.height;
1894
1895                                 draw_end_presentation_page (view, &area);
1896                         }
1897                                 return FALSE;
1898                         case EV_PRESENTATION_BLACK:
1899                         case EV_PRESENTATION_WHITE:
1900                                 return FALSE;
1901                         case EV_PRESENTATION_NORMAL:
1902                         default:
1903                                 break;
1904                 }
1905         }
1906
1907         if (view->loading) {
1908                 GdkRectangle area = {0};
1909
1910                 area.width = widget->allocation.width;
1911                 area.height = widget->allocation.height;
1912
1913                 draw_loading_text (view,
1914                                    &area,
1915                                    &(event->area));
1916         }
1917
1918         if (view->document == NULL)
1919                 return FALSE;
1920
1921         for (i = view->start_page; i <= view->end_page; i++) {
1922                 GdkRectangle page_area;
1923                 GtkBorder border;
1924                 gboolean page_ready = TRUE;
1925
1926                 if (!get_page_extents (view, i, &page_area, &border))
1927                         continue;
1928
1929                 page_area.x -= view->scroll_x;
1930                 page_area.y -= view->scroll_y;
1931
1932                 draw_one_page (view, i, &page_area, &border, &(event->area), &page_ready);
1933
1934                 if (page_ready && EV_IS_DOCUMENT_FIND (view->document))
1935                         highlight_find_results (view, i);
1936         }
1937
1938         return FALSE;
1939 }
1940
1941 static gboolean
1942 ev_view_do_popup_menu (EvView *view,
1943                        gdouble x,
1944                        gdouble y)
1945 {
1946         EvLink  *link;
1947         EvImage *image;
1948
1949         image = ev_view_get_image_at_location (view, x, y);
1950         if (image) {
1951                 g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, image);
1952                 return TRUE;
1953         }
1954
1955         link = ev_view_get_link_at_location (view, x, y);
1956         if (link) {
1957                 g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, link);
1958                 return TRUE;
1959         }
1960
1961         g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, NULL);
1962
1963         return TRUE;
1964 }
1965
1966 static gboolean
1967 ev_view_popup_menu (GtkWidget *widget)
1968 {
1969         gint x, y;
1970
1971         gtk_widget_get_pointer (widget, &x, &y);
1972         return ev_view_do_popup_menu (EV_VIEW (widget), x, y);
1973 }
1974
1975 static gboolean
1976 ev_view_button_press_event (GtkWidget      *widget,
1977                             GdkEventButton *event)
1978 {
1979         EvView *view = EV_VIEW (widget);
1980
1981         if (!GTK_WIDGET_HAS_FOCUS (widget)) {
1982                 gtk_widget_grab_focus (widget);
1983         }
1984
1985         view->pressed_button = event->button;
1986         view->selection_info.in_drag = FALSE;
1987
1988         switch (event->button) {
1989                 case 1: {
1990                         EvImage *image;
1991
1992                         if (view->selection_info.selections) {
1993                                 if (location_in_selected_text (view,
1994                                                                event->x + view->scroll_x,
1995                                                                event->y + view->scroll_y)) {
1996                                         view->selection_info.in_drag = TRUE;
1997                                 } else {
1998                                         clear_selection (view);
1999                                 }
2000
2001                                 gtk_widget_queue_draw (widget);
2002                         } else if ((image = ev_view_get_image_at_location (view, event->x, event->y))) {
2003                                 if (view->image_dnd_info.image)
2004                                         g_object_unref (view->image_dnd_info.image);
2005                                 view->image_dnd_info.image = g_object_ref (image);
2006                                 view->image_dnd_info.in_drag = TRUE;
2007
2008                                 view->image_dnd_info.start.x = event->x + view->scroll_x;
2009                                 view->image_dnd_info.start.y = event->y + view->scroll_y;
2010                         }
2011
2012                         view->selection_info.start.x = event->x + view->scroll_x;
2013                         view->selection_info.start.y = event->y + view->scroll_y;
2014                 }
2015                         return TRUE;
2016                 case 2:
2017                         /* use root coordinates as reference point because
2018                          * scrolling changes window relative coordinates */
2019                         view->drag_info.start.x = event->x_root;
2020                         view->drag_info.start.y = event->y_root;
2021                         view->drag_info.hadj = gtk_adjustment_get_value (view->hadjustment);
2022                         view->drag_info.vadj = gtk_adjustment_get_value (view->vadjustment);
2023
2024                         ev_view_set_cursor (view, EV_VIEW_CURSOR_DRAG);
2025
2026                         return TRUE;
2027                 case 3:
2028                         return ev_view_do_popup_menu (view, event->x, event->y);
2029         }
2030
2031         return FALSE;
2032 }
2033
2034 /*** Drag and Drop ***/
2035 static void
2036 ev_view_drag_data_get (GtkWidget        *widget,
2037                        GdkDragContext   *context,
2038                        GtkSelectionData *selection_data,
2039                        guint             info,
2040                        guint             time)
2041 {
2042         EvView *view = EV_VIEW (widget);
2043
2044         switch (info) {
2045                 case TARGET_DND_TEXT:
2046                         if (view->selection_info.selections &&
2047                             ev_document_can_get_text (view->document)) {
2048                                 gchar *text;
2049
2050                                 text = get_selected_text (view);
2051
2052                                 gtk_selection_data_set_text (selection_data,
2053                                                              text,
2054                                                              strlen (text));
2055
2056                                 g_free (text);
2057                         }
2058                         break;
2059                 case TARGET_DND_IMAGE:
2060                         if (view->image_dnd_info.image) {
2061                                 GdkPixbuf *pixbuf;
2062
2063                                 pixbuf = ev_image_get_pixbuf (view->image_dnd_info.image);
2064                                 gtk_selection_data_set_pixbuf (selection_data, pixbuf);
2065                         }
2066                         break;
2067                 case TARGET_DND_URI:
2068                         if (view->image_dnd_info.image) {
2069                                 const gchar *tmp_uri;
2070                                 gchar      **uris;
2071
2072                                 tmp_uri = ev_image_save_tmp (view->image_dnd_info.image);
2073
2074                                 uris = g_new0 (gchar *, 2);
2075                                 uris[0] = (gchar *)tmp_uri;
2076
2077                                 gtk_selection_data_set_uris (selection_data, uris);
2078
2079                                 /* g_free instead of g_strfreev since tmp_uri is const */
2080                                 g_free (uris);
2081                         }
2082         }
2083 }
2084
2085 static gboolean
2086 ev_view_drag_motion (GtkWidget      *widget,
2087                      GdkDragContext *context,
2088                      gint            x,
2089                      gint            y,
2090                      guint           time)
2091 {
2092         if (gtk_drag_get_source_widget (context) == widget)
2093                 gdk_drag_status (context, 0, time);
2094         else
2095                 gdk_drag_status (context, context->suggested_action, time);
2096
2097         return TRUE;
2098 }
2099
2100 static void
2101 ev_view_drag_data_received (GtkWidget          *widget,
2102                             GdkDragContext     *context,
2103                             gint                x,
2104                             gint                y,
2105                             GtkSelectionData   *selection_data,
2106                             guint               info,
2107                             guint               time)
2108 {
2109         gchar  **uris;
2110         gint     i = 0;
2111         GSList  *uri_list = NULL;
2112
2113         uris = gtk_selection_data_get_uris (selection_data);
2114         if (!uris) {
2115                 gtk_drag_finish (context, FALSE, FALSE, time);
2116                 return;
2117         }
2118
2119         for (i = 0; uris[i]; i++) {
2120                 uri_list = g_slist_prepend (uri_list, (gpointer) uris[i]);
2121         }
2122
2123         ev_application_open_uri_list (EV_APP, uri_list,
2124                                       gtk_widget_get_screen (widget),
2125                                       0);
2126         gtk_drag_finish (context, TRUE, FALSE, time);
2127
2128         g_strfreev (uris);
2129         g_slist_free (uri_list);
2130 }
2131
2132
2133 static gboolean
2134 selection_update_idle_cb (EvView *view)
2135 {
2136         compute_selections (view, &view->selection_info.start, &view->motion);
2137         view->selection_update_id = 0;
2138         return FALSE;
2139 }
2140
2141 static gboolean
2142 selection_scroll_timeout_cb (EvView *view)
2143 {
2144         gint x, y, shift = 0;
2145         GtkWidget *widget = GTK_WIDGET (view);
2146
2147         gtk_widget_get_pointer (widget, &x, &y);
2148
2149         if (y > widget->allocation.height) {
2150                 shift = (y - widget->allocation.height) / 2;
2151         } else if (y < 0) {
2152                 shift = y / 2;
2153         }
2154
2155         if (shift)
2156                 gtk_adjustment_set_value (view->vadjustment,
2157                                           CLAMP (view->vadjustment->value + shift,
2158                                           view->vadjustment->lower,
2159                                           view->vadjustment->upper -
2160                                           view->vadjustment->page_size));
2161
2162         if (x > widget->allocation.width) {
2163                 shift = (x - widget->allocation.width) / 2;
2164         } else if (x < 0) {
2165                 shift = x / 2;
2166         }
2167
2168         if (shift)
2169                 gtk_adjustment_set_value (view->hadjustment,
2170                                           CLAMP (view->hadjustment->value + shift,
2171                                           view->hadjustment->lower,
2172                                           view->hadjustment->upper -
2173                                           view->hadjustment->page_size));
2174
2175         return TRUE;
2176 }
2177
2178 static gboolean
2179 ev_view_motion_notify_event (GtkWidget      *widget,
2180                              GdkEventMotion *event)
2181 {
2182         EvView *view = EV_VIEW (widget);
2183         gint x, y;
2184
2185         if (!view->document)
2186                 return FALSE;
2187
2188         if (event->is_hint || event->window != widget->window) {
2189             gtk_widget_get_pointer (widget, &x, &y);
2190         } else {
2191             x = event->x;
2192             y = event->y;
2193         }
2194
2195         if (view->selection_info.in_drag) {
2196                 if (gtk_drag_check_threshold (widget,
2197                                               view->selection_info.start.x,
2198                                               view->selection_info.start.y,
2199                                               x, y)) {
2200                         GtkTargetList *target_list = gtk_target_list_new (NULL, 0);
2201
2202                         gtk_target_list_add_text_targets (target_list, TARGET_DND_TEXT);
2203
2204                         gtk_drag_begin (widget, target_list,
2205                                         GDK_ACTION_COPY,
2206                                         1, (GdkEvent *)event);
2207
2208                         view->selection_info.in_drag = FALSE;
2209
2210                         gtk_target_list_unref (target_list);
2211
2212                         return TRUE;
2213                 }
2214         } else if (view->image_dnd_info.in_drag) {
2215                 if (gtk_drag_check_threshold (widget,
2216                                               view->selection_info.start.x,
2217                                               view->selection_info.start.y,
2218                                               x, y)) {
2219                         GtkTargetList *target_list = gtk_target_list_new (NULL, 0);
2220
2221                         gtk_target_list_add_uri_targets (target_list, TARGET_DND_URI);
2222                         gtk_target_list_add_image_targets (target_list, TARGET_DND_IMAGE, TRUE);
2223
2224                         gtk_drag_begin (widget, target_list,
2225                                         GDK_ACTION_COPY,
2226                                         1, (GdkEvent *)event);
2227
2228                         view->image_dnd_info.in_drag = FALSE;
2229
2230                         gtk_target_list_unref (target_list);
2231
2232                         return TRUE;
2233                 }
2234         }
2235
2236         /* For the Evince 0.4.x release, we limit selection to un-rotated
2237          * documents only.
2238          */
2239         if (view->pressed_button == 1 && view->rotation == 0) {
2240
2241                 /* Schedule timeout to scroll during selection and additionally
2242                  * scroll once to allow arbitrary speed. */
2243                 if (!view->selection_scroll_id)
2244                     view->selection_scroll_id = g_timeout_add (SCROLL_TIME, (GSourceFunc)selection_scroll_timeout_cb, view);
2245                 else
2246                     selection_scroll_timeout_cb (view);
2247
2248                 view->selection_info.in_selection = TRUE;
2249                 view->motion.x = x + view->scroll_x;
2250                 view->motion.y = y + view->scroll_y;
2251
2252                 /* Queue an idle to handle the motion.  We do this because
2253                  * handling any selection events in the motion could be slower
2254                  * than new motion events reach us.  We always put it in the
2255                  * idle to make sure we catch up and don't visibly lag the
2256                  * mouse. */
2257                 if (!view->selection_update_id)
2258                         view->selection_update_id = g_idle_add ((GSourceFunc)selection_update_idle_cb, view);
2259
2260                 return TRUE;
2261         } else if (view->pressed_button == 2) {
2262                 if (!view->drag_info.in_drag) {
2263                         gboolean start;
2264
2265                         start = gtk_drag_check_threshold (widget,
2266                                                           view->drag_info.start.x,
2267                                                           view->drag_info.start.y,
2268                                                           event->x_root,
2269                                                           event->y_root);
2270                         view->drag_info.in_drag = start;
2271                 }
2272
2273                 if (view->drag_info.in_drag) {
2274                         int dx, dy;
2275                         gdouble dhadj_value, dvadj_value;
2276
2277                         dx = event->x_root - view->drag_info.start.x;
2278                         dy = event->y_root - view->drag_info.start.y;
2279
2280                         dhadj_value = view->hadjustment->page_size *
2281                                       (gdouble)dx / widget->allocation.width;
2282                         dvadj_value = view->vadjustment->page_size *
2283                                       (gdouble)dy / widget->allocation.height;
2284
2285                         /* clamp scrolling to visible area */
2286                         gtk_adjustment_set_value (view->hadjustment,
2287                                                   MIN(view->drag_info.hadj - dhadj_value,
2288                                                       view->hadjustment->upper -
2289                                                       view->hadjustment->page_size));
2290                         gtk_adjustment_set_value (view->vadjustment,
2291                                                   MIN(view->drag_info.vadj - dvadj_value,
2292                                                       view->vadjustment->upper -
2293                                                       view->vadjustment->page_size));
2294
2295                         return TRUE;
2296                 }
2297         } else if (view->pressed_button <= 0) {
2298                 handle_link_over_xy (view, x, y);
2299                 return TRUE;
2300         }
2301
2302         return FALSE;
2303 }
2304
2305 static gboolean
2306 ev_view_button_release_event (GtkWidget      *widget,
2307                               GdkEventButton *event)
2308 {
2309         EvView *view = EV_VIEW (widget);
2310         EvLink *link;
2311
2312         if (view->pressed_button == 2) {
2313                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
2314         }
2315
2316         if (view->document && view->pressed_button == 1) {
2317                 link = ev_view_get_link_at_location (view, event->x, event->y);
2318         } else {
2319                 link = NULL;
2320         }
2321
2322         view->pressed_button = -1;
2323         view->drag_info.in_drag = FALSE;
2324         view->image_dnd_info.in_drag = FALSE;
2325
2326         if (view->selection_scroll_id) {
2327             g_source_remove (view->selection_scroll_id);
2328             view->selection_scroll_id = 0;
2329         }
2330         if (view->selection_update_id) {
2331             g_source_remove (view->selection_update_id);
2332             view->selection_update_id = 0;
2333         }
2334
2335         if (view->selection_info.selections) {
2336                 ev_view_update_primary_selection (view);
2337
2338                 if (view->selection_info.in_drag) {
2339                         clear_selection (view);
2340                         gtk_widget_queue_draw (widget);
2341                 }
2342
2343                 view->selection_info.in_drag = FALSE;
2344         } else if (link) {
2345                 ev_view_handle_link (view, link);
2346         } else if (view->presentation) {
2347                 switch (event->button) {
2348                         case 1:
2349                                 ev_view_next_page (view);
2350                                 return TRUE;
2351                         case 3:
2352                                 ev_view_previous_page (view);
2353                                 return TRUE;
2354                 }
2355         }
2356
2357         return FALSE;
2358 }
2359
2360 /* Goto Window */
2361 /* Cut and paste from gtkwindow.c */
2362 static void
2363 send_focus_change (GtkWidget *widget,
2364                    gboolean   in)
2365 {
2366         GdkEvent *fevent = gdk_event_new (GDK_FOCUS_CHANGE);
2367
2368         g_object_ref (widget);
2369
2370         if (in)
2371                 GTK_WIDGET_SET_FLAGS (widget, GTK_HAS_FOCUS);
2372         else
2373                 GTK_WIDGET_UNSET_FLAGS (widget, GTK_HAS_FOCUS);
2374
2375         fevent->focus_change.type = GDK_FOCUS_CHANGE;
2376         fevent->focus_change.window = g_object_ref (widget->window);
2377         fevent->focus_change.in = in;
2378
2379         gtk_widget_event (widget, fevent);
2380
2381         g_object_notify (G_OBJECT (widget), "has-focus");
2382
2383         g_object_unref (widget);
2384         gdk_event_free (fevent);
2385 }
2386
2387 static void
2388 ev_view_goto_window_hide (EvView *view)
2389 {
2390         /* send focus-in event */
2391         send_focus_change (view->goto_entry, FALSE);
2392         gtk_widget_hide (view->goto_window);
2393         gtk_entry_set_text (GTK_ENTRY (view->goto_entry), "");
2394 }
2395
2396 static gboolean
2397 ev_view_goto_window_delete_event (GtkWidget   *widget,
2398                                   GdkEventAny *event,
2399                                   EvView      *view)
2400 {
2401         ev_view_goto_window_hide (view);
2402
2403         return TRUE;
2404 }
2405
2406 static gboolean
2407 key_is_numeric (guint keyval)
2408 {
2409         return ((keyval >= GDK_0 && keyval <= GDK_9) ||
2410                 (keyval >= GDK_KP_0 && keyval <= GDK_KP_9));
2411 }
2412
2413 static gboolean
2414 ev_view_goto_window_key_press_event (GtkWidget   *widget,
2415                                      GdkEventKey *event,
2416                                      EvView      *view)
2417 {
2418         switch (event->keyval) {
2419                 case GDK_Escape:
2420                 case GDK_Tab:
2421                 case GDK_KP_Tab:
2422                 case GDK_ISO_Left_Tab:
2423                         ev_view_goto_window_hide (view);
2424                         return TRUE;
2425                 case GDK_Return:
2426                 case GDK_KP_Enter:
2427                 case GDK_ISO_Enter:
2428                         return FALSE;
2429                 default:
2430                         if (!key_is_numeric (event->keyval))
2431                                 return TRUE;
2432         }
2433
2434         return FALSE;
2435 }
2436
2437 static gboolean
2438 ev_view_goto_window_button_press_event (GtkWidget      *widget,
2439                                         GdkEventButton *event,
2440                                         EvView         *view)
2441 {
2442         ev_view_goto_window_hide (view);
2443
2444         return TRUE;
2445 }
2446
2447 static void
2448 ev_view_goto_entry_activate (GtkEntry *entry,
2449                              EvView   *view)
2450 {
2451         const gchar *text;
2452         gint         page;
2453
2454         text = gtk_entry_get_text (entry);
2455         page = atoi (text) - 1;
2456
2457         ev_view_goto_window_hide (view);
2458
2459         if (page >= 0 &&
2460             page < ev_page_cache_get_n_pages (view->page_cache))
2461                 ev_page_cache_set_current_page (view->page_cache, page);
2462 }
2463
2464 static void
2465 ev_view_goto_window_create (EvView *view)
2466 {
2467         GtkWidget *frame, *hbox, *toplevel, *label;
2468
2469         toplevel = gtk_widget_get_toplevel (GTK_WIDGET (view));
2470
2471         if (view->goto_window) {
2472                 if (GTK_WINDOW (toplevel)->group)
2473                         gtk_window_group_add_window (GTK_WINDOW (toplevel)->group,
2474                                                      GTK_WINDOW (view->goto_window));
2475                 else if (GTK_WINDOW (view->goto_window)->group)
2476                         gtk_window_group_remove_window (GTK_WINDOW (view->goto_window)->group,
2477                                                         GTK_WINDOW (view->goto_window));
2478                 return;
2479         }
2480
2481         view->goto_window = gtk_window_new (GTK_WINDOW_POPUP);
2482
2483         if (GTK_WINDOW (toplevel)->group)
2484                 gtk_window_group_add_window (GTK_WINDOW (toplevel)->group,
2485                                              GTK_WINDOW (view->goto_window));
2486
2487         gtk_window_set_modal (GTK_WINDOW (view->goto_window), TRUE);
2488
2489         g_signal_connect (view->goto_window, "delete_event",
2490                           G_CALLBACK (ev_view_goto_window_delete_event),
2491                           view);
2492         g_signal_connect (view->goto_window, "key_press_event",
2493                           G_CALLBACK (ev_view_goto_window_key_press_event),
2494                           view);
2495         g_signal_connect (view->goto_window, "button_press_event",
2496                           G_CALLBACK (ev_view_goto_window_button_press_event),
2497                           view);
2498
2499         frame = gtk_frame_new (NULL);
2500         gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
2501         gtk_container_add (GTK_CONTAINER (view->goto_window), frame);
2502         gtk_widget_show (frame);
2503
2504         hbox = gtk_hbox_new (FALSE, 0);
2505         gtk_container_set_border_width (GTK_CONTAINER (hbox), 3);
2506         gtk_container_add (GTK_CONTAINER (frame), hbox);
2507         gtk_widget_show (hbox);
2508
2509         label = gtk_label_new(_("Jump to page:"));
2510         gtk_box_pack_start (GTK_BOX (hbox), label, TRUE, TRUE, 3);
2511         gtk_widget_show (label);
2512         gtk_widget_realize (label);
2513
2514         view->goto_entry = gtk_entry_new ();
2515         g_signal_connect (view->goto_entry, "activate",
2516                           G_CALLBACK (ev_view_goto_entry_activate),
2517                           view);
2518         gtk_box_pack_start_defaults (GTK_BOX (hbox), view->goto_entry);
2519         gtk_widget_show (view->goto_entry);
2520         gtk_widget_realize (view->goto_entry);
2521 }
2522
2523 static void
2524 ev_view_goto_entry_grab_focus (EvView *view)
2525 {
2526         GtkWidgetClass *entry_parent_class;
2527
2528         entry_parent_class = g_type_class_peek_parent (GTK_ENTRY_GET_CLASS (view->goto_entry));
2529         (entry_parent_class->grab_focus) (view->goto_entry);
2530
2531         send_focus_change (view->goto_entry, TRUE);
2532 }
2533
2534 static void
2535 ev_view_goto_window_send_key_event (EvView   *view,
2536                                     GdkEvent *event)
2537 {
2538         GdkEventKey *new_event;
2539         GdkScreen   *screen;
2540
2541         /* Move goto window off screen */
2542         screen = gtk_widget_get_screen (GTK_WIDGET (view));
2543         gtk_window_move (GTK_WINDOW (view->goto_window),
2544                          gdk_screen_get_width (screen) + 1,
2545                          gdk_screen_get_height (screen) + 1);
2546         gtk_widget_show (view->goto_window);
2547
2548         new_event = (GdkEventKey *) gdk_event_copy (event);
2549         g_object_unref (new_event->window);
2550         new_event->window = g_object_ref (view->goto_window->window);
2551         gtk_widget_realize (view->goto_window);
2552
2553         gtk_widget_event (view->goto_window, (GdkEvent *)new_event);
2554         gdk_event_free ((GdkEvent *)new_event);
2555         gtk_widget_hide (view->goto_window);
2556 }
2557
2558 static gboolean
2559 ev_view_key_press_event (GtkWidget   *widget,
2560                          GdkEventKey *event)
2561 {
2562         EvView *view = EV_VIEW (widget);
2563         EvPresentationState current;
2564
2565         if (!view->presentation ||
2566             view->presentation_state == EV_PRESENTATION_END)
2567                 return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
2568
2569
2570         current = view->presentation_state;
2571
2572         switch (event->keyval) {
2573                 case GDK_b:
2574                 case GDK_B:
2575                         view->presentation_state =
2576                                 (view->presentation_state == EV_PRESENTATION_BLACK) ?
2577                                 EV_PRESENTATION_NORMAL : EV_PRESENTATION_BLACK;
2578                         break;
2579                 case GDK_w:
2580                 case GDK_W:
2581                         view->presentation_state =
2582                                 (view->presentation_state == EV_PRESENTATION_WHITE) ?
2583                                 EV_PRESENTATION_NORMAL : EV_PRESENTATION_WHITE;
2584                         break;
2585                 default:
2586                         if (view->presentation_state == EV_PRESENTATION_BLACK ||
2587                             view->presentation_state == EV_PRESENTATION_WHITE) {
2588                                 view->presentation_state = EV_PRESENTATION_NORMAL;
2589                         }
2590         }
2591
2592         if (current == view->presentation_state) {
2593                 if (ev_page_cache_get_n_pages (view->page_cache) > 1 &&
2594                     key_is_numeric (event->keyval)) {
2595                         gint x, y;
2596
2597                         ev_view_goto_window_create (view);
2598                         ev_view_goto_window_send_key_event (view, (GdkEvent *)event);
2599                         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
2600                         gtk_window_move (GTK_WINDOW (view->goto_window), x, y);
2601                         gtk_widget_show (view->goto_window);
2602                         ev_view_goto_entry_grab_focus (view);
2603
2604                         return TRUE;
2605                 }
2606
2607                 return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
2608         }
2609
2610         switch (view->presentation_state) {
2611                 case EV_PRESENTATION_NORMAL:
2612                 case EV_PRESENTATION_BLACK:
2613                         gdk_window_set_background (widget->window,
2614                                                    &widget->style->black);
2615                         break;
2616                 case EV_PRESENTATION_WHITE:
2617                         gdk_window_set_background (widget->window,
2618                                                    &widget->style->white);
2619                         break;
2620                 default:
2621                         return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
2622         }
2623
2624         gtk_widget_queue_draw (widget);
2625         return TRUE;
2626 }
2627
2628 static gint
2629 ev_view_focus_in (GtkWidget     *widget,
2630                   GdkEventFocus *event)
2631 {
2632         if (EV_VIEW (widget)->pixbuf_cache)
2633                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
2634         gtk_widget_queue_draw (widget);
2635
2636         return FALSE;
2637 }
2638
2639 static gint
2640 ev_view_focus_out (GtkWidget     *widget,
2641                      GdkEventFocus *event)
2642 {
2643         if (EV_VIEW (widget)->goto_window)
2644                 ev_view_goto_window_hide (EV_VIEW (widget));
2645
2646         if (EV_VIEW (widget)->pixbuf_cache)
2647                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
2648         gtk_widget_queue_draw (widget);
2649
2650         return FALSE;
2651 }
2652
2653 static gboolean
2654 ev_view_leave_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
2655 {
2656         EvView *view = EV_VIEW (widget);
2657
2658         ev_view_set_status (view, NULL);
2659
2660         if (view->cursor == EV_VIEW_CURSOR_LINK ||
2661             view->cursor == EV_VIEW_CURSOR_IBEAM)
2662                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
2663
2664         if (view->link_tooltip) {
2665                 view->hovered_link = NULL;
2666                 ev_tooltip_deactivate (EV_TOOLTIP (view->link_tooltip));
2667         }
2668
2669         return FALSE;
2670 }
2671
2672 static gboolean
2673 ev_view_enter_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
2674 {
2675         EvView *view = EV_VIEW (widget);
2676
2677         handle_link_over_xy (view, event->x, event->y);
2678
2679         return FALSE;
2680 }
2681
2682 static void
2683 ev_view_style_set (GtkWidget *widget,
2684                    GtkStyle  *old_style)
2685 {
2686         if (EV_VIEW (widget)->pixbuf_cache)
2687                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
2688
2689         GTK_WIDGET_CLASS (ev_view_parent_class)->style_set (widget, old_style);
2690 }
2691
2692 /*** Drawing ***/
2693
2694 static guint32
2695 ev_gdk_color_to_rgb (const GdkColor *color)
2696 {
2697   guint32 result;
2698   result = (0xff0000 | (color->red & 0xff00));
2699   result <<= 8;
2700   result |= ((color->green & 0xff00) | (color->blue >> 8));
2701   return result;
2702 }
2703
2704 static void
2705 draw_rubberband (GtkWidget *widget, GdkWindow *window,
2706                  const GdkRectangle *rect, guchar alpha)
2707 {
2708         GdkGC *gc;
2709         GdkPixbuf *pixbuf;
2710         GdkColor *fill_color_gdk;
2711         guint fill_color;
2712
2713         fill_color_gdk = gdk_color_copy (&GTK_WIDGET (widget)->style->base[GTK_STATE_SELECTED]);
2714         fill_color = ev_gdk_color_to_rgb (fill_color_gdk) << 8 | alpha;
2715
2716         pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8,
2717                                  rect->width, rect->height);
2718         gdk_pixbuf_fill (pixbuf, fill_color);
2719
2720         gdk_draw_pixbuf (window, NULL, pixbuf,
2721                          0, 0,
2722                          rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
2723                          rect->width, rect->height,
2724                          GDK_RGB_DITHER_NONE,
2725                          0, 0);
2726
2727         g_object_unref (pixbuf);
2728
2729         gc = gdk_gc_new (window);
2730         gdk_gc_set_rgb_fg_color (gc, fill_color_gdk);
2731         gdk_draw_rectangle (window, gc, FALSE,
2732                             rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
2733                             rect->width - 1,
2734                             rect->height - 1);
2735         g_object_unref (gc);
2736
2737         gdk_color_free (fill_color_gdk);
2738 }
2739
2740
2741 static void
2742 highlight_find_results (EvView *view, int page)
2743 {
2744         EvDocumentFind *find;
2745         int i, results = 0;
2746
2747         g_return_if_fail (EV_IS_DOCUMENT_FIND (view->document));
2748
2749         find = EV_DOCUMENT_FIND (view->document);
2750
2751         results = ev_document_find_get_n_results (find, page);
2752
2753         for (i = 0; i < results; i++) {
2754                 EvRectangle rectangle;
2755                 GdkRectangle view_rectangle;
2756                 guchar alpha;
2757
2758                 if (i == view->find_result && page == view->current_page) {
2759                         alpha = 0x90;
2760                 } else {
2761                         alpha = 0x20;
2762                 }
2763
2764                 ev_document_find_get_result (find, page, i, &rectangle);
2765                 doc_rect_to_view_rect (view, page, &rectangle, &view_rectangle);
2766                 draw_rubberband (GTK_WIDGET (view), GTK_WIDGET(view)->window,
2767                                  &view_rectangle, alpha);
2768         }
2769 }
2770
2771 static void
2772 draw_loading_text (EvView       *view,
2773                    GdkRectangle *page_area,
2774                    GdkRectangle *expose_area)
2775 {
2776         const char *loading_text;
2777         PangoLayout *layout;
2778         PangoFontDescription *font_desc;
2779         PangoRectangle logical_rect;
2780         double real_scale;
2781         int target_width;
2782
2783         /* Don't annoy users with loading messages during presentations.
2784          * FIXME: Temporary "workaround" for
2785          * http://bugzilla.gnome.org/show_bug.cgi?id=320352 */
2786         if (view->presentation)
2787                 return;
2788
2789         loading_text = _("Loading...");
2790
2791         ev_document_fc_mutex_lock ();
2792
2793         layout = gtk_widget_create_pango_layout (GTK_WIDGET (view), loading_text);
2794
2795         font_desc = pango_font_description_new ();
2796
2797
2798         /* We set the font to be 10 points, get the size, and scale appropriately */
2799         pango_font_description_set_size (font_desc, 10 * PANGO_SCALE);
2800         pango_layout_set_font_description (layout, font_desc);
2801         pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
2802
2803         /* Make sure we fit the middle of the page */
2804         target_width = MAX (page_area->width / 2, 1);
2805         real_scale = ((double)target_width / (double) logical_rect.width) * (PANGO_SCALE * 10);
2806         pango_font_description_set_size (font_desc, (int)real_scale);
2807         pango_layout_set_font_description (layout, font_desc);
2808         pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
2809
2810         gtk_paint_layout (GTK_WIDGET (view)->style,
2811                           GTK_WIDGET (view)->window,
2812                           GTK_WIDGET_STATE (view),
2813                           FALSE,
2814                           page_area,
2815                           GTK_WIDGET (view),
2816                           NULL,
2817                           page_area->x + (target_width/2),
2818                           page_area->y + (page_area->height - logical_rect.height) / 2,
2819                           layout);
2820
2821         pango_font_description_free (font_desc);
2822         g_object_unref (layout);
2823
2824         ev_document_fc_mutex_unlock ();
2825 }
2826
2827 static void
2828 draw_one_page (EvView          *view,
2829                gint             page,
2830                GdkRectangle    *page_area,
2831                GtkBorder       *border,
2832                GdkRectangle    *expose_area,
2833                gboolean        *page_ready)
2834 {
2835         gint width, height;
2836         GdkPixbuf *current_pixbuf;
2837         GdkRectangle overlap;
2838         GdkRectangle real_page_area;
2839         EvViewSelection *selection;
2840         gint current_page;
2841
2842         g_assert (view->document);
2843
2844         if (! gdk_rectangle_intersect (page_area, expose_area, &overlap))
2845                 return;
2846
2847         current_page = ev_page_cache_get_current_page (view->page_cache);
2848         selection = find_selection_for_page (view, page);
2849         ev_page_cache_get_size (view->page_cache,
2850                                 page, view->rotation,
2851                                 view->scale,
2852                                 &width, &height);
2853         /* Render the document itself */
2854         real_page_area = *page_area;
2855
2856         real_page_area.x += border->left;
2857         real_page_area.y += border->top;
2858         real_page_area.width -= (border->left + border->right);
2859         real_page_area.height -= (border->top + border->bottom);
2860         *page_ready = TRUE;
2861
2862         ev_document_misc_paint_one_page (GTK_WIDGET(view)->window,
2863                                          GTK_WIDGET (view),
2864                                          page_area, border,
2865                                          page == current_page);
2866
2867         if (gdk_rectangle_intersect (&real_page_area, expose_area, &overlap)) {
2868                 GdkPixbuf *selection_pixbuf = NULL;
2869                 GdkPixbuf *scaled_image;
2870                 GdkPixbuf *scaled_selection;
2871
2872                 current_pixbuf = ev_pixbuf_cache_get_pixbuf (view->pixbuf_cache, page);
2873
2874                 /* Get the selection pixbuf iff we have something to draw */
2875                 if (current_pixbuf && view->selection_mode == EV_VIEW_SELECTION_TEXT && selection)
2876                         selection_pixbuf = ev_pixbuf_cache_get_selection_pixbuf (view->pixbuf_cache,
2877                                                                                  page,
2878                                                                                  view->scale,
2879                                                                                  NULL);
2880
2881                 if (current_pixbuf == NULL)
2882                         scaled_image = NULL;
2883                 else if (width == gdk_pixbuf_get_width (current_pixbuf) &&
2884                          height == gdk_pixbuf_get_height (current_pixbuf))
2885                         scaled_image = g_object_ref (current_pixbuf);
2886                 else
2887                         /* FIXME: We don't want to scale the whole area, just the right
2888                          * area of it */
2889                         scaled_image = gdk_pixbuf_scale_simple (current_pixbuf,
2890                                                                 width, height,
2891                                                                 GDK_INTERP_NEAREST);
2892
2893                 if (selection_pixbuf == NULL)
2894                         scaled_selection = NULL;
2895                 else if (width == gdk_pixbuf_get_width (selection_pixbuf) &&
2896                          height == gdk_pixbuf_get_height (selection_pixbuf))
2897                         scaled_selection = g_object_ref (selection_pixbuf);
2898                 else
2899                         /* FIXME: We don't want to scale the whole area, just the right
2900                          * area of it */
2901                         scaled_selection = gdk_pixbuf_scale_simple (selection_pixbuf,
2902                                                                     width, height,
2903                                                                     GDK_INTERP_NEAREST);
2904
2905                 if (scaled_image) {
2906                         gdk_draw_pixbuf (GTK_WIDGET(view)->window,
2907                                          GTK_WIDGET (view)->style->fg_gc[GTK_STATE_NORMAL],
2908                                          scaled_image,
2909                                          overlap.x - real_page_area.x,
2910                                          overlap.y - real_page_area.y,
2911                                          overlap.x, overlap.y,
2912                                          overlap.width, overlap.height,
2913                                          GDK_RGB_DITHER_NORMAL,
2914                                          0, 0);
2915                         g_object_unref (scaled_image);
2916                 } else {
2917                         draw_loading_text (view,
2918                                            &real_page_area,
2919                                            expose_area);
2920                         *page_ready = FALSE;
2921                 }
2922
2923                 if (scaled_selection) {
2924                         gdk_draw_pixbuf (GTK_WIDGET(view)->window,
2925                                          GTK_WIDGET (view)->style->fg_gc[GTK_STATE_NORMAL],
2926                                          scaled_selection,
2927                                          overlap.x - real_page_area.x,
2928                                          overlap.y - real_page_area.y,
2929                                          overlap.x, overlap.y,
2930                                          overlap.width, overlap.height,
2931                                          GDK_RGB_DITHER_NORMAL,
2932                                          0, 0);
2933                         g_object_unref (scaled_selection);
2934                 }
2935         }
2936 }
2937
2938 /*** GObject functions ***/
2939
2940 static void
2941 ev_view_finalize (GObject *object)
2942 {
2943         EvView *view = EV_VIEW (object);
2944
2945         g_free (view->status);
2946         g_free (view->find_status);
2947
2948         clear_selection (view);
2949
2950         if (view->image_dnd_info.image)
2951                 g_object_unref (view->image_dnd_info.image);
2952         view->image_dnd_info.image = NULL;
2953
2954         G_OBJECT_CLASS (ev_view_parent_class)->finalize (object);
2955 }
2956
2957 static void
2958 ev_view_destroy (GtkObject *object)
2959 {
2960         EvView *view = EV_VIEW (object);
2961
2962         if (view->document) {
2963                 g_object_unref (view->document);
2964                 view->document = NULL;
2965         }
2966
2967         if (view->pixbuf_cache) {
2968                 g_object_unref (view->pixbuf_cache);
2969                 view->pixbuf_cache = NULL;
2970         }
2971
2972         if (view->link_tooltip) {
2973                 gtk_widget_destroy (view->link_tooltip);
2974                 view->link_tooltip = NULL;
2975         }
2976
2977         if (view->goto_window) {
2978                 gtk_widget_destroy (view->goto_window);
2979                 view->goto_window = NULL;
2980                 view->goto_entry = NULL;
2981         }
2982
2983         if (view->selection_scroll_id) {
2984             g_source_remove (view->selection_scroll_id);
2985             view->selection_scroll_id = 0;
2986         }
2987
2988         if (view->selection_update_id) {
2989             g_source_remove (view->selection_update_id);
2990             view->selection_update_id = 0;
2991         }
2992
2993         ev_view_presentation_transition_stop (view);
2994
2995         ev_view_set_scroll_adjustments (view, NULL, NULL);
2996
2997         GTK_OBJECT_CLASS (ev_view_parent_class)->destroy (object);
2998 }
2999
3000 static void
3001 ev_view_set_property (GObject      *object,
3002                       guint         prop_id,
3003                       const GValue *value,
3004                       GParamSpec   *pspec)
3005 {
3006         EvView *view = EV_VIEW (object);
3007
3008         switch (prop_id) {
3009                 case PROP_CONTINUOUS:
3010                         ev_view_set_continuous (view, g_value_get_boolean (value));
3011                         break;
3012                 case PROP_DUAL_PAGE:
3013                         ev_view_set_dual_page (view, g_value_get_boolean (value));
3014                         break;
3015                 case PROP_FULLSCREEN:
3016                         ev_view_set_fullscreen (view, g_value_get_boolean (value));
3017                         break;
3018                 case PROP_PRESENTATION:
3019                         ev_view_set_presentation (view, g_value_get_boolean (value));
3020                         break;
3021                 case PROP_SIZING_MODE:
3022                         ev_view_set_sizing_mode (view, g_value_get_enum (value));
3023                         break;
3024                 case PROP_ZOOM:
3025                         ev_view_set_zoom (view, g_value_get_double (value), FALSE);
3026                         break;
3027                 case PROP_ROTATION:
3028                         ev_view_set_rotation (view, g_value_get_int (value));
3029                         break;
3030                 default:
3031                         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
3032         }
3033 }
3034
3035 static AtkObject *
3036 ev_view_get_accessible (GtkWidget *widget)
3037 {
3038         static gboolean first_time = TRUE;
3039
3040         if (first_time) {
3041                 AtkObjectFactory *factory;
3042                 AtkRegistry *registry;
3043                 GType derived_type;
3044                 GType derived_atk_type;
3045
3046                 /*
3047                  * Figure out whether accessibility is enabled by looking at the
3048                  * type of the accessible object which would be created for
3049                  * the parent type of EvView.
3050                  */
3051                 derived_type = g_type_parent (EV_TYPE_VIEW);
3052
3053                 registry = atk_get_default_registry ();
3054                 factory = atk_registry_get_factory (registry,
3055                                                     derived_type);
3056                 derived_atk_type = atk_object_factory_get_accessible_type (factory);
3057                 if (g_type_is_a (derived_atk_type, GTK_TYPE_ACCESSIBLE))
3058                         atk_registry_set_factory_type (registry,
3059                                                        EV_TYPE_VIEW,
3060                                                        ev_view_accessible_factory_get_type ());
3061                 first_time = FALSE;
3062         }
3063         return GTK_WIDGET_CLASS (ev_view_parent_class)->get_accessible (widget);
3064 }
3065
3066 static void
3067 ev_view_get_property (GObject *object,
3068                       guint prop_id,
3069                       GValue *value,
3070                       GParamSpec *pspec)
3071 {
3072         EvView *view = EV_VIEW (object);
3073
3074         switch (prop_id) {
3075                 case PROP_STATUS:
3076                         g_value_set_string (value, view->status);
3077                         break;
3078                 case PROP_FIND_STATUS:
3079                         g_value_set_string (value, view->status);
3080                         break;
3081                 case PROP_CONTINUOUS:
3082                         g_value_set_boolean (value, view->continuous);
3083                         break;
3084                 case PROP_DUAL_PAGE:
3085                         g_value_set_boolean (value, view->dual_page);
3086                         break;
3087                 case PROP_FULLSCREEN:
3088                         g_value_set_boolean (value, view->fullscreen);
3089                         break;
3090                 case PROP_PRESENTATION:
3091                         g_value_set_boolean (value, view->presentation);
3092                         break;
3093                 case PROP_SIZING_MODE:
3094                         g_value_set_enum (value, view->sizing_mode);
3095                         break;
3096                 case PROP_ZOOM:
3097                         g_value_set_double (value, view->scale);
3098                         break;
3099                 case PROP_ROTATION:
3100                         g_value_set_int (value, view->rotation);
3101                         break;
3102                 case PROP_HAS_SELECTION:
3103                         g_value_set_boolean (value,
3104                                              view->selection_info.selections != NULL);
3105                         break;
3106                 default:
3107                         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
3108         }
3109 }
3110
3111 static void
3112 ev_view_class_init (EvViewClass *class)
3113 {
3114         GObjectClass *object_class = G_OBJECT_CLASS (class);
3115         GtkObjectClass *gtk_object_class = GTK_OBJECT_CLASS (class);
3116         GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
3117         GtkBindingSet *binding_set;
3118
3119         object_class->finalize = ev_view_finalize;
3120         object_class->set_property = ev_view_set_property;
3121         object_class->get_property = ev_view_get_property;
3122
3123         widget_class->expose_event = ev_view_expose_event;
3124         widget_class->button_press_event = ev_view_button_press_event;
3125         widget_class->motion_notify_event = ev_view_motion_notify_event;
3126         widget_class->button_release_event = ev_view_button_release_event;
3127         widget_class->key_press_event = ev_view_key_press_event;
3128         widget_class->focus_in_event = ev_view_focus_in;
3129         widget_class->focus_out_event = ev_view_focus_out;
3130         widget_class->get_accessible = ev_view_get_accessible;
3131         widget_class->size_request = ev_view_size_request;
3132         widget_class->size_allocate = ev_view_size_allocate;
3133         widget_class->realize = ev_view_realize;
3134         widget_class->scroll_event = ev_view_scroll_event;
3135         widget_class->enter_notify_event = ev_view_enter_notify_event;
3136         widget_class->leave_notify_event = ev_view_leave_notify_event;
3137         widget_class->style_set = ev_view_style_set;
3138         widget_class->drag_data_get = ev_view_drag_data_get;
3139         widget_class->drag_motion = ev_view_drag_motion;
3140         widget_class->drag_data_received = ev_view_drag_data_received;
3141         widget_class->popup_menu = ev_view_popup_menu;
3142         gtk_object_class->destroy = ev_view_destroy;
3143
3144         class->set_scroll_adjustments = ev_view_set_scroll_adjustments;
3145         class->binding_activated = ev_view_scroll;
3146
3147         widget_class->set_scroll_adjustments_signal =
3148             g_signal_new ("set-scroll-adjustments",
3149                           G_OBJECT_CLASS_TYPE (object_class),
3150                           G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3151                           G_STRUCT_OFFSET (EvViewClass, set_scroll_adjustments),
3152                           NULL, NULL,
3153                           ev_marshal_VOID__OBJECT_OBJECT,
3154                           G_TYPE_NONE, 2,
3155                           GTK_TYPE_ADJUSTMENT,
3156                           GTK_TYPE_ADJUSTMENT);
3157
3158         signals[SIGNAL_BINDING_ACTIVATED] = g_signal_new ("binding_activated",
3159                          G_TYPE_FROM_CLASS (object_class),
3160                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3161                          G_STRUCT_OFFSET (EvViewClass, binding_activated),
3162                          NULL, NULL,
3163                          ev_marshal_VOID__ENUM_BOOLEAN,
3164                          G_TYPE_NONE, 2,
3165                          GTK_TYPE_SCROLL_TYPE,
3166                          G_TYPE_BOOLEAN);
3167
3168         signals[SIGNAL_ZOOM_INVALID] = g_signal_new ("zoom-invalid",
3169                          G_TYPE_FROM_CLASS (object_class),
3170                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3171                          G_STRUCT_OFFSET (EvViewClass, zoom_invalid),
3172                          NULL, NULL,
3173                          ev_marshal_VOID__VOID,
3174                          G_TYPE_NONE, 0, G_TYPE_NONE);
3175         signals[SIGNAL_EXTERNAL_LINK] = g_signal_new ("external-link",
3176                          G_TYPE_FROM_CLASS (object_class),
3177                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3178                          G_STRUCT_OFFSET (EvViewClass, external_link),
3179                          NULL, NULL,
3180                          g_cclosure_marshal_VOID__OBJECT,
3181                          G_TYPE_NONE, 1,
3182                          G_TYPE_OBJECT);
3183         signals[SIGNAL_POPUP_MENU] = g_signal_new ("popup",
3184                          G_TYPE_FROM_CLASS (object_class),
3185                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3186                          G_STRUCT_OFFSET (EvViewClass, popup_menu),
3187                          NULL, NULL,
3188                          g_cclosure_marshal_VOID__OBJECT,
3189                          G_TYPE_NONE, 1,
3190                          G_TYPE_OBJECT);
3191
3192         g_object_class_install_property (object_class,
3193                                          PROP_STATUS,
3194                                          g_param_spec_string ("status",
3195                                                               "Status Message",
3196                                                               "The status message",
3197                                                               NULL,
3198                                                               G_PARAM_READABLE));
3199
3200         g_object_class_install_property (object_class,
3201                                          PROP_FIND_STATUS,
3202                                          g_param_spec_string ("find-status",
3203                                                               "Find Status Message",
3204                                                               "The find status message",
3205                                                               NULL,
3206                                                               G_PARAM_READABLE));
3207
3208         g_object_class_install_property (object_class,
3209                                          PROP_CONTINUOUS,
3210                                          g_param_spec_boolean ("continuous",
3211                                                                "Continuous",
3212                                                                "Continuous scrolling mode",
3213                                                                TRUE,
3214                                                                G_PARAM_READWRITE));
3215
3216         g_object_class_install_property (object_class,
3217                                          PROP_DUAL_PAGE,
3218                                          g_param_spec_boolean ("dual-page",
3219                                                                "Dual Page",
3220                                                                "Two pages visible at once",
3221                                                                FALSE,
3222                                                                G_PARAM_READWRITE));
3223         g_object_class_install_property (object_class,
3224                                          PROP_FULLSCREEN,
3225                                          g_param_spec_boolean ("fullscreen",
3226                                                                "Full Screen",
3227                                                                "Draw page in a fullscreen fashion",
3228                                                                FALSE,
3229                                                                G_PARAM_READWRITE));
3230         g_object_class_install_property (object_class,
3231                                          PROP_PRESENTATION,
3232                                          g_param_spec_boolean ("presentation",
3233                                                                "Presentation",
3234                                                                "Draw page in presentation mode",
3235                                                                TRUE,
3236                                                                G_PARAM_READWRITE));
3237
3238         g_object_class_install_property (object_class,
3239                                          PROP_SIZING_MODE,
3240                                          g_param_spec_enum ("sizing-mode",
3241                                                             "Sizing Mode",
3242                                                             "Sizing Mode",
3243                                                             EV_TYPE_SIZING_MODE,
3244                                                             EV_SIZING_FIT_WIDTH,
3245                                                             G_PARAM_READWRITE));
3246
3247         g_object_class_install_property (object_class,
3248                                          PROP_ZOOM,
3249                                          g_param_spec_double ("zoom",
3250                                                               "Zoom factor",
3251                                                               "Zoom factor",
3252                                                               0,
3253                                                               G_MAXDOUBLE,
3254                                                               1.0,
3255                                                               G_PARAM_READWRITE));
3256         g_object_class_install_property (object_class,
3257                                          PROP_ROTATION,
3258                                          g_param_spec_double ("rotation",
3259                                                               "Rotation",
3260                                                               "Rotation",
3261                                                               0,
3262                                                               360,
3263                                                               0,
3264                                                               G_PARAM_READWRITE));
3265         g_object_class_install_property (object_class,
3266                                          PROP_HAS_SELECTION,
3267                                          g_param_spec_boolean ("has-selection",
3268                                                                "Has selection",
3269                                                                "The view has selections",
3270                                                                FALSE,
3271                                                                G_PARAM_READABLE));
3272
3273         binding_set = gtk_binding_set_by_class (class);
3274
3275         add_scroll_binding_keypad (binding_set, GDK_Left,  0, EV_SCROLL_STEP_BACKWARD, TRUE);
3276         add_scroll_binding_keypad (binding_set, GDK_Right, 0, EV_SCROLL_STEP_FORWARD,  TRUE);
3277         add_scroll_binding_keypad (binding_set, GDK_Left,  GDK_MOD1_MASK, EV_SCROLL_STEP_DOWN, TRUE);
3278         add_scroll_binding_keypad (binding_set, GDK_Right, GDK_MOD1_MASK, EV_SCROLL_STEP_UP,  TRUE);
3279         add_scroll_binding_keypad (binding_set, GDK_Up,    0, EV_SCROLL_STEP_BACKWARD, FALSE);
3280         add_scroll_binding_keypad (binding_set, GDK_Down,  0, EV_SCROLL_STEP_FORWARD,  FALSE);
3281         add_scroll_binding_keypad (binding_set, GDK_Up,    GDK_MOD1_MASK, EV_SCROLL_STEP_DOWN, FALSE);
3282         add_scroll_binding_keypad (binding_set, GDK_Down,  GDK_MOD1_MASK, EV_SCROLL_STEP_UP,  FALSE);
3283 }
3284
3285 static void
3286 ev_view_init (EvView *view)
3287 {
3288         GTK_WIDGET_SET_FLAGS (view, GTK_CAN_FOCUS);
3289
3290         view->spacing = 5;
3291         view->scale = 1.0;
3292         view->current_page = 0;
3293         view->pressed_button = -1;
3294         view->cursor = EV_VIEW_CURSOR_NORMAL;
3295         view->drag_info.in_drag = FALSE;
3296         view->selection_info.selections = NULL;
3297         view->selection_info.in_selection = FALSE;
3298         view->selection_info.in_drag = FALSE;
3299         view->selection_mode = EV_VIEW_SELECTION_TEXT;
3300         view->continuous = TRUE;
3301         view->dual_page = FALSE;
3302         view->presentation = FALSE;
3303         view->presentation_state = EV_PRESENTATION_NORMAL;
3304         view->fullscreen = FALSE;
3305         view->sizing_mode = EV_SIZING_FIT_WIDTH;
3306         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
3307         view->jump_to_find_result = TRUE;
3308
3309         gtk_drag_dest_set (GTK_WIDGET (view),
3310                            GTK_DEST_DEFAULT_ALL,
3311                            view_drop_targets,
3312                            G_N_ELEMENTS (view_drop_targets),
3313                            GDK_ACTION_COPY);
3314 }
3315
3316 /*** Callbacks ***/
3317
3318 static void
3319 find_changed_cb (EvDocument *document, int page, EvView *view)
3320 {
3321         double percent;
3322         int n_pages;
3323
3324         percent = ev_document_find_get_progress
3325                         (EV_DOCUMENT_FIND (view->document));
3326         n_pages = ev_page_cache_get_n_pages (view->page_cache);
3327
3328         if (view->jump_to_find_result == TRUE) {
3329                 jump_to_find_page (view, EV_VIEW_FIND_NEXT, 0);
3330                 jump_to_find_result (view);
3331         }
3332         update_find_status_message (view, percent * n_pages >= n_pages - 1 );
3333         if (view->current_page == page)
3334                 gtk_widget_queue_draw (GTK_WIDGET (view));
3335 }
3336
3337 static void
3338 job_finished_cb (EvPixbufCache *pixbuf_cache,
3339                  EvView        *view)
3340 {
3341         gtk_widget_queue_draw (GTK_WIDGET (view));
3342 }
3343
3344 static void
3345 page_changed_cb (EvPageCache *page_cache,
3346                  int          new_page,
3347                  EvView      *view)
3348 {
3349         if (view->current_page != new_page) {
3350                 view->current_page = new_page;
3351                 view->pending_scroll = SCROLL_TO_PAGE_POSITION;
3352                 if (view->presentation)
3353                         ev_view_presentation_transition_start (view);
3354                 gtk_widget_queue_resize (GTK_WIDGET (view));
3355         } else {
3356                 gtk_widget_queue_draw (GTK_WIDGET (view));
3357         }
3358
3359         if (EV_IS_DOCUMENT_FIND (view->document)) {
3360                 view->find_result = 0;
3361                 update_find_status_message (view, TRUE);
3362         }
3363 }
3364
3365 static void on_adjustment_value_changed (GtkAdjustment  *adjustment,
3366                                          EvView *view)
3367 {
3368         int dx = 0, dy = 0;
3369
3370         if (! GTK_WIDGET_REALIZED (view))
3371                 return;
3372
3373         if (view->hadjustment) {
3374                 dx = view->scroll_x - (int) view->hadjustment->value;
3375                 view->scroll_x = (int) view->hadjustment->value;
3376         } else {
3377                 view->scroll_x = 0;
3378         }
3379
3380         if (view->vadjustment) {
3381                 dy = view->scroll_y - (int) view->vadjustment->value;
3382                 view->scroll_y = (int) view->vadjustment->value;
3383         } else {
3384                 view->scroll_y = 0;
3385         }
3386
3387
3388         if (view->pending_resize)
3389                 gtk_widget_queue_draw (GTK_WIDGET (view));
3390         else
3391                 gdk_window_scroll (GTK_WIDGET (view)->window, dx, dy);
3392
3393
3394         if (view->document)
3395                 view_update_range_and_current_page (view);
3396 }
3397
3398 GtkWidget*
3399 ev_view_new (void)
3400 {
3401         GtkWidget *view;
3402
3403         view = g_object_new (EV_TYPE_VIEW, NULL);
3404
3405         return view;
3406 }
3407
3408 static void
3409 setup_caches (EvView *view)
3410 {
3411         view->page_cache = ev_page_cache_get (view->document);
3412         g_signal_connect (view->page_cache, "page-changed", G_CALLBACK (page_changed_cb), view);
3413         view->pixbuf_cache = ev_pixbuf_cache_new (GTK_WIDGET (view), view->document);
3414         g_signal_connect (view->pixbuf_cache, "job-finished", G_CALLBACK (job_finished_cb), view);
3415 }
3416
3417 static void
3418 clear_caches (EvView *view)
3419 {
3420         if (view->pixbuf_cache) {
3421                 g_object_unref (view->pixbuf_cache);
3422                 view->pixbuf_cache = NULL;
3423         }
3424
3425         if (view->page_cache) {
3426                 view->page_cache = NULL;
3427         }
3428 }
3429
3430 void
3431 ev_view_set_loading (EvView       *view,
3432                      gboolean      loading)
3433 {
3434         view->loading = loading;
3435         gtk_widget_queue_draw (GTK_WIDGET (view));
3436 }
3437
3438 void
3439 ev_view_set_document (EvView     *view,
3440                       EvDocument *document)
3441 {
3442         g_return_if_fail (EV_IS_VIEW (view));
3443
3444         view->loading = FALSE;
3445
3446         if (document != view->document) {
3447                 clear_caches (view);
3448
3449                 if (view->document) {
3450                         g_signal_handlers_disconnect_by_func (view->document,
3451                                                               find_changed_cb,
3452                                                               view);
3453                         g_object_unref (view->document);
3454                         view->page_cache = NULL;
3455
3456                 }
3457
3458                 view->document = document;
3459                 view->find_result = 0;
3460
3461                 if (view->document) {
3462                         g_object_ref (view->document);
3463                         if (EV_IS_DOCUMENT_FIND (view->document)) {
3464                                 g_signal_connect (view->document,
3465                                                   "find_changed",
3466                                                   G_CALLBACK (find_changed_cb),
3467                                                   view);
3468                         }
3469
3470                         setup_caches (view);
3471                 }
3472
3473                 gtk_widget_queue_resize (GTK_WIDGET (view));
3474         }
3475 }
3476
3477 /*** Zoom and sizing mode ***/
3478
3479 #define EPSILON 0.0000001
3480 void
3481 ev_view_set_zoom (EvView   *view,
3482                   double    factor,
3483                   gboolean  relative)
3484 {
3485         double scale;
3486
3487         if (relative)
3488                 scale = view->scale * factor;
3489         else
3490                 scale = factor;
3491
3492         scale = CLAMP (scale, view->min_scale, view->max_scale);
3493
3494         if (ABS (view->scale - scale) < EPSILON)
3495                 return;
3496
3497         view->scale = scale;
3498         view->pending_resize = TRUE;
3499
3500         gtk_widget_queue_resize (GTK_WIDGET (view));
3501
3502         g_object_notify (G_OBJECT (view), "zoom");
3503 }
3504
3505 double
3506 ev_view_get_zoom (EvView *view)
3507 {
3508         return view->scale;
3509 }
3510
3511 void
3512 ev_view_set_screen_dpi (EvView  *view,
3513                         gdouble  dpi)
3514 {
3515         g_return_if_fail (EV_IS_VIEW (view));
3516         g_return_if_fail (dpi > 0);
3517
3518         view->dpi = dpi;
3519         view->min_scale = MIN_SCALE * dpi / 72.0;
3520         view->max_scale = MAX_SCALE * dpi / 72.0;
3521 }
3522
3523 gboolean
3524 ev_view_get_continuous (EvView *view)
3525 {
3526         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
3527
3528         return view->continuous;
3529 }
3530
3531 void
3532 ev_view_set_continuous (EvView   *view,
3533                         gboolean  continuous)
3534 {
3535         g_return_if_fail (EV_IS_VIEW (view));
3536
3537         continuous = continuous != FALSE;
3538
3539         if (view->continuous != continuous) {
3540                 view->continuous = continuous;
3541                 view->pending_scroll = SCROLL_TO_PAGE_POSITION;
3542                 gtk_widget_queue_resize (GTK_WIDGET (view));
3543         }
3544
3545         g_object_notify (G_OBJECT (view), "continuous");
3546 }
3547
3548 gboolean
3549 ev_view_get_dual_page (EvView *view)
3550 {
3551         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
3552
3553         return view->dual_page;
3554 }
3555
3556 void
3557 ev_view_set_dual_page (EvView   *view,
3558                        gboolean  dual_page)
3559 {
3560         g_return_if_fail (EV_IS_VIEW (view));
3561
3562         dual_page = dual_page != FALSE;
3563
3564         if (view->dual_page == dual_page)
3565                 return;
3566
3567         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
3568         view->dual_page = dual_page;
3569         /* FIXME: if we're keeping the pixbuf cache around, we should extend the
3570          * preload_cache_size to be 2 if dual_page is set.
3571          */
3572         gtk_widget_queue_resize (GTK_WIDGET (view));
3573
3574         g_object_notify (G_OBJECT (view), "dual-page");
3575 }
3576
3577 void
3578 ev_view_set_fullscreen (EvView   *view,
3579                          gboolean  fullscreen)
3580 {
3581         g_return_if_fail (EV_IS_VIEW (view));
3582
3583         fullscreen = fullscreen != FALSE;
3584
3585         if (view->fullscreen == fullscreen)
3586                 return;
3587
3588         view->fullscreen = fullscreen;
3589         gtk_widget_queue_resize (GTK_WIDGET (view));
3590
3591         g_object_notify (G_OBJECT (view), "fullscreen");
3592 }
3593
3594 gboolean
3595 ev_view_get_fullscreen (EvView *view)
3596 {
3597         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
3598
3599         return view->fullscreen;
3600 }
3601
3602 void
3603 ev_view_set_presentation (EvView   *view,
3604                           gboolean  presentation)
3605 {
3606         g_return_if_fail (EV_IS_VIEW (view));
3607
3608         presentation = presentation != FALSE;
3609
3610         if (view->presentation == presentation)
3611                 return;
3612
3613         if (!presentation)
3614                 view->presentation_state = EV_PRESENTATION_NORMAL;
3615
3616         view->presentation = presentation;
3617         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
3618
3619         if (presentation) {
3620                 view->sizing_mode_saved = view->sizing_mode;
3621                 view->scale_saved = view->scale;
3622                 ev_view_set_sizing_mode (view, EV_SIZING_BEST_FIT);
3623         } else {
3624                 ev_view_set_sizing_mode (view, view->sizing_mode_saved);
3625                 ev_view_set_zoom (view, view->scale_saved, FALSE);
3626         }
3627
3628         gtk_widget_queue_resize (GTK_WIDGET (view));
3629
3630         if (presentation)
3631                 ev_view_presentation_transition_start (view);
3632         else
3633                 ev_view_presentation_transition_stop (view);
3634
3635         if (GTK_WIDGET_REALIZED (view)) {
3636                 if (view->presentation)
3637                         gdk_window_set_background (GTK_WIDGET(view)->window,
3638                                                    &GTK_WIDGET (view)->style->black);
3639                 else
3640                         gdk_window_set_background (GTK_WIDGET(view)->window,
3641                                                    &GTK_WIDGET (view)->style->mid [GTK_STATE_NORMAL]);
3642         }
3643
3644         g_object_notify (G_OBJECT (view), "presentation");
3645 }
3646
3647 gboolean
3648 ev_view_get_presentation (EvView *view)
3649 {
3650         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
3651
3652         return view->presentation;
3653 }
3654
3655 static gboolean
3656 transition_next_page (EvView *view)
3657 {
3658         ev_view_next_page (view);
3659
3660         return FALSE;
3661 }
3662
3663 static void
3664 ev_view_presentation_transition_stop (EvView *view)
3665 {
3666         if (view->trans_timeout_id > 0)
3667                 g_source_remove (view->trans_timeout_id);
3668         view->trans_timeout_id = 0;
3669 }
3670
3671 static void
3672 ev_view_presentation_transition_start (EvView *view)
3673 {
3674         gdouble duration;
3675
3676         if (!EV_IS_DOCUMENT_TRANSITION (view->document))
3677                 return;
3678
3679         ev_view_presentation_transition_stop (view);
3680
3681         duration = ev_document_transition_get_page_duration (EV_DOCUMENT_TRANSITION (view->document),
3682                                                              view->current_page);
3683         if (duration > 0)
3684                 view->trans_timeout_id = g_timeout_add (duration * 1000,
3685                                                         (GSourceFunc) transition_next_page,
3686                                                         view);
3687 }
3688
3689 void
3690 ev_view_set_sizing_mode (EvView       *view,
3691                          EvSizingMode  sizing_mode)
3692 {
3693         g_return_if_fail (EV_IS_VIEW (view));
3694
3695         if (view->sizing_mode == sizing_mode)
3696                 return;
3697
3698         view->sizing_mode = sizing_mode;
3699         gtk_widget_queue_resize (GTK_WIDGET (view));
3700
3701         g_object_notify (G_OBJECT (view), "sizing-mode");
3702 }
3703
3704 EvSizingMode
3705 ev_view_get_sizing_mode (EvView *view)
3706 {
3707         g_return_val_if_fail (EV_IS_VIEW (view), EV_SIZING_FREE);
3708
3709         return view->sizing_mode;
3710 }
3711
3712 gboolean
3713 ev_view_can_zoom_in (EvView *view)
3714 {
3715         return view->scale * ZOOM_IN_FACTOR <= view->max_scale;
3716 }
3717
3718 gboolean
3719 ev_view_can_zoom_out (EvView *view)
3720 {
3721         return view->scale * ZOOM_OUT_FACTOR >= view->min_scale;
3722 }
3723
3724 void
3725 ev_view_zoom_in (EvView *view)
3726 {
3727         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
3728
3729         view->pending_scroll = SCROLL_TO_CENTER;
3730         ev_view_set_zoom (view, ZOOM_IN_FACTOR, TRUE);
3731 }
3732
3733 void
3734 ev_view_zoom_out (EvView *view)
3735 {
3736         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
3737
3738         view->pending_scroll = SCROLL_TO_CENTER;
3739         ev_view_set_zoom (view, ZOOM_OUT_FACTOR, TRUE);
3740 }
3741
3742 void
3743 ev_view_rotate_right (EvView *view)
3744 {
3745         int rotation = view->rotation + 90;
3746
3747         if (rotation >= 360) {
3748                 rotation -= 360;
3749         }
3750
3751         ev_view_set_rotation (view, rotation);
3752 }
3753
3754 void
3755 ev_view_rotate_left (EvView *view)
3756 {
3757         int rotation = view->rotation - 90;
3758
3759         if (rotation < 0) {
3760                 rotation += 360;
3761         }
3762
3763         ev_view_set_rotation (view, rotation);
3764 }
3765
3766 void
3767 ev_view_set_rotation (EvView *view, int rotation)
3768 {
3769         view->rotation = rotation;
3770
3771         if (view->pixbuf_cache) {
3772                 ev_pixbuf_cache_clear (view->pixbuf_cache);
3773                 gtk_widget_queue_resize (GTK_WIDGET (view));
3774         }
3775
3776         if (rotation != 0)
3777                 clear_selection (view);
3778
3779         g_object_notify (G_OBJECT (view), "rotation");
3780 }
3781
3782 int
3783 ev_view_get_rotation (EvView *view)
3784 {
3785         return view->rotation;
3786 }
3787
3788 static double
3789 zoom_for_size_fit_width (int doc_width,
3790                          int doc_height,
3791                          int target_width,
3792                          int target_height,
3793                          int vsb_width)
3794 {
3795         double scale;
3796
3797         scale = (double)target_width / doc_width;
3798
3799         if (doc_height * scale > target_height)
3800                 scale = (double) (target_width - vsb_width) / doc_width;
3801
3802         return scale;
3803 }
3804
3805 static double
3806 zoom_for_size_fit_height (int doc_width,
3807                           int doc_height,
3808                           int target_width,
3809                           int target_height,
3810                           int vsb_height)
3811 {
3812         double scale;
3813
3814         scale = (double)target_height / doc_height;
3815
3816         if (doc_width * scale > target_width)
3817                 scale = (double) (target_height - vsb_height) / doc_height;
3818
3819         return scale;
3820 }
3821
3822 static double
3823 zoom_for_size_best_fit (int doc_width,
3824                         int doc_height,
3825                         int target_width,
3826                         int target_height,
3827                         int vsb_width,
3828                         int hsb_width)
3829 {
3830         double w_scale;
3831         double h_scale;
3832
3833         w_scale = (double)target_width / doc_width;
3834         h_scale = (double)target_height / doc_height;
3835
3836         if (doc_height * w_scale > target_height)
3837                 w_scale = (double) (target_width - vsb_width) / doc_width;
3838         if (doc_width * h_scale > target_width)
3839                 h_scale = (double) (target_height - hsb_width) / doc_height;
3840
3841         return MIN (w_scale, h_scale);
3842 }
3843
3844
3845 static void
3846 ev_view_zoom_for_size_presentation (EvView *view,
3847                                     int     width,
3848                                     int     height)
3849 {
3850         int doc_width, doc_height;
3851         gdouble scale;
3852
3853         ev_page_cache_get_size (view->page_cache,
3854                                 view->current_page,
3855                                 view->rotation,
3856                                 1.0,
3857                                 &doc_width,
3858                                 &doc_height);
3859         scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, 0, 0);
3860         ev_view_set_zoom (view, scale, FALSE);
3861 }
3862
3863 static void
3864 ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
3865                            int     width,
3866                            int     height,
3867                            int     vsb_width,
3868                            int     hsb_height)
3869 {
3870         int doc_width, doc_height;
3871         GtkBorder border;
3872         gdouble scale;
3873
3874         ev_page_cache_get_max_width (view->page_cache,
3875                                      view->rotation,
3876                                      1.0,
3877                                      &doc_width);
3878         ev_page_cache_get_max_height (view->page_cache,
3879                                       view->rotation,
3880                                       1.0,
3881                                       &doc_height);
3882         compute_border (view, doc_width, doc_height, &border);
3883
3884         doc_width = doc_width * 2;
3885         width -= (2 * (border.left + border.right) + 3 * view->spacing);
3886         height -= (border.top + border.bottom + 2 * view->spacing - 1);
3887
3888         /* FIXME: We really need to calculate the overall height here, not the
3889          * page height.  We assume there's always a vertical scrollbar for
3890          * now.  We need to fix this. */
3891         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
3892                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
3893         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
3894                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
3895         else
3896                 g_assert_not_reached ();
3897
3898         ev_view_set_zoom (view, scale, FALSE);
3899 }
3900
3901 static void
3902 ev_view_zoom_for_size_continuous (EvView *view,
3903                                   int     width,
3904                                   int     height,
3905                                   int     vsb_width,
3906                                   int     hsb_height)
3907 {
3908         int doc_width, doc_height;
3909         GtkBorder border;
3910         gdouble scale;
3911
3912         ev_page_cache_get_max_width (view->page_cache,
3913                                      view->rotation,
3914                                      1.0,
3915                                      &doc_width);
3916         ev_page_cache_get_max_height (view->page_cache,
3917                                       view->rotation,
3918                                       1.0,
3919                                       &doc_height);
3920         compute_border (view, doc_width, doc_height, &border);
3921
3922         width -= (border.left + border.right + 2 * view->spacing);
3923         height -= (border.top + border.bottom + 2 * view->spacing - 1);
3924
3925         /* FIXME: We really need to calculate the overall height here, not the
3926          * page height.  We assume there's always a vertical scrollbar for
3927          * now.  We need to fix this. */
3928         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
3929                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
3930         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
3931                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
3932         else
3933                 g_assert_not_reached ();
3934
3935         ev_view_set_zoom (view, scale, FALSE);
3936 }
3937
3938 static void
3939 ev_view_zoom_for_size_dual_page (EvView *view,
3940                                  int     width,
3941                                  int     height,
3942                                  int     vsb_width,
3943                                  int     hsb_height)
3944 {
3945         GtkBorder border;
3946         gint doc_width, doc_height;
3947         gdouble scale;
3948         gint other_page;
3949
3950         other_page = view->current_page ^ 1;
3951
3952         /* Find the largest of the two. */
3953         ev_page_cache_get_size (view->page_cache,
3954                                 view->current_page,
3955                                 view->rotation,
3956                                 1.0,
3957                                 &doc_width, &doc_height);
3958
3959         if (other_page < ev_page_cache_get_n_pages (view->page_cache)) {
3960                 gint width_2, height_2;
3961                 ev_page_cache_get_size (view->page_cache,
3962                                         other_page,
3963                                         view->rotation,
3964                                         1.0,
3965                                         &width_2, &height_2);
3966                 if (width_2 > doc_width)
3967                         doc_width = width_2;
3968                 if (height_2 > doc_height)
3969                         doc_height = height_2;
3970         }
3971         compute_border (view, doc_width, doc_height, &border);
3972
3973         doc_width = doc_width * 2;
3974         width -= ((border.left + border.right)* 2 + 3 * view->spacing);
3975         height -= (border.top + border.bottom + 2 * view->spacing);
3976
3977         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
3978                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
3979         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
3980                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
3981         else
3982                 g_assert_not_reached ();
3983
3984         ev_view_set_zoom (view, scale, FALSE);
3985 }
3986
3987 static void
3988 ev_view_zoom_for_size_single_page (EvView *view,
3989                                    int     width,
3990                                    int     height,
3991                                    int     vsb_width,
3992                                    int     hsb_height)
3993 {
3994         int doc_width, doc_height;
3995         GtkBorder border;
3996         gdouble scale;
3997
3998         ev_page_cache_get_size (view->page_cache,
3999                                 view->current_page,
4000                                 view->rotation,
4001                                 1.0,
4002                                 &doc_width,
4003                                 &doc_height);
4004         /* Get an approximate border */
4005         compute_border (view, width, height, &border);
4006
4007         width -= (border.left + border.right + 2 * view->spacing);
4008         height -= (border.top + border.bottom + 2 * view->spacing);
4009
4010         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
4011                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
4012         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
4013                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
4014         else
4015                 g_assert_not_reached ();
4016
4017         ev_view_set_zoom (view, scale, FALSE);
4018 }
4019
4020 void
4021 ev_view_set_zoom_for_size (EvView *view,
4022                            int     width,
4023                            int     height,
4024                            int     vsb_width,
4025                            int     hsb_height)
4026 {
4027         g_return_if_fail (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
4028                           view->sizing_mode == EV_SIZING_BEST_FIT);
4029         g_return_if_fail (width >= 0);
4030         g_return_if_fail (height >= 0);
4031
4032         if (view->document == NULL)
4033                 return;
4034
4035         if (view->presentation)
4036                 ev_view_zoom_for_size_presentation (view, width, height);
4037         else if (view->continuous && view->dual_page)
4038                 ev_view_zoom_for_size_continuous_and_dual_page (view, width, height, vsb_width, hsb_height);
4039         else if (view->continuous)
4040                 ev_view_zoom_for_size_continuous (view, width, height, vsb_width, hsb_height);
4041         else if (view->dual_page)
4042                 ev_view_zoom_for_size_dual_page (view, width, height, vsb_width, hsb_height);
4043         else
4044                 ev_view_zoom_for_size_single_page (view, width, height, vsb_width, hsb_height);
4045 }
4046
4047 /*** Status text messages ***/
4048
4049 const char *
4050 ev_view_get_status (EvView *view)
4051 {
4052         g_return_val_if_fail (EV_IS_VIEW (view), NULL);
4053
4054         return view->status;
4055 }
4056
4057 static void
4058 ev_view_set_status (EvView *view, const char *message)
4059 {
4060         g_return_if_fail (EV_IS_VIEW (view));
4061
4062         if (message != view->status) {
4063                 g_free (view->status);
4064                 view->status = g_strdup (message);
4065                 g_object_notify (G_OBJECT (view), "status");
4066         }
4067 }
4068
4069 static void
4070 update_find_status_message (EvView *view, gboolean this_page)
4071 {
4072         char *message;
4073
4074         if (this_page) {
4075                 int results;
4076
4077                 results = ev_document_find_get_n_results
4078                                 (EV_DOCUMENT_FIND (view->document),
4079                                  view->current_page);
4080                 /* TRANS: Sometimes this could be better translated as
4081                    "%d hit(s) on this page".  Therefore this string
4082                    contains plural cases. */
4083                 message = g_strdup_printf (ngettext ("%d found on this page",
4084                                                      "%d found on this page",
4085                                                      results),
4086                                            results);
4087         } else {
4088                 double percent;
4089
4090                 percent = ev_document_find_get_progress
4091                                 (EV_DOCUMENT_FIND (view->document));
4092                 message = g_strdup_printf (_("%3d%% remaining to search"),
4093                                            (int) ((1.0 - percent) * 100));
4094
4095         }
4096         ev_view_set_find_status (view, message);
4097         g_free (message);
4098 }
4099
4100 const char *
4101 ev_view_get_find_status (EvView *view)
4102 {
4103         g_return_val_if_fail (EV_IS_VIEW (view), NULL);
4104
4105         return view->find_status;
4106 }
4107
4108 static void
4109 ev_view_set_find_status (EvView *view, const char *message)
4110 {
4111         g_return_if_fail (EV_IS_VIEW (view));
4112
4113         g_free (view->find_status);
4114         view->find_status = g_strdup (message);
4115         g_object_notify (G_OBJECT (view), "find-status");
4116 }
4117
4118 /*** Find ***/
4119
4120 static void
4121 jump_to_find_result (EvView *view)
4122 {
4123         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4124         EvRectangle rect;
4125         GdkRectangle view_rect;
4126         int n_results;
4127         int page = view->current_page;
4128
4129         n_results = ev_document_find_get_n_results (find, page);
4130
4131         if (n_results > 0  && view->find_result < n_results) {
4132                 ev_document_find_get_result
4133                         (find, page, view->find_result, &rect);
4134
4135                 doc_rect_to_view_rect (view, page, &rect, &view_rect);
4136                 ensure_rectangle_is_visible (view, &view_rect);
4137         }
4138 }
4139
4140 /**
4141  * jump_to_find_page
4142  * @view: #EvView instance
4143  * @direction: Direction to look
4144  * @shift: Shift from current page
4145  *
4146  * Jumps to the first page that has occurences of searched word.
4147  * Uses a direction where to look and a shift from current page.
4148  *
4149  */
4150 static void
4151 jump_to_find_page (EvView *view, EvViewFindDirection direction, gint shift)
4152 {
4153         int n_pages, i;
4154
4155         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4156
4157         for (i = 0; i < n_pages; i++) {
4158                 int has_results;
4159                 int page;
4160
4161                 if (direction == EV_VIEW_FIND_NEXT)
4162                         page = view->current_page + i;
4163                 else
4164                         page = view->current_page - i;
4165                 page += shift;
4166
4167                 if (page >= n_pages) {
4168                         page = page - n_pages;
4169                 }
4170                 if (page < 0)
4171                         page = page + n_pages;
4172
4173                 has_results = ev_document_find_page_has_results
4174                                 (EV_DOCUMENT_FIND (view->document), page);
4175                 if (has_results == -1) {
4176                         break;
4177                 } else if (has_results == 1) {
4178                         ev_page_cache_set_current_page (view->page_cache, page);
4179                         break;
4180                 }
4181         }
4182 }
4183
4184 gboolean
4185 ev_view_can_find_next (EvView *view)
4186 {
4187         if (EV_IS_DOCUMENT_FIND (view->document)) {
4188                 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4189                 int i, n_pages;
4190
4191                 n_pages = ev_page_cache_get_n_pages (view->page_cache);
4192                 for (i = 0; i < n_pages; i++) {
4193                         if (ev_document_find_get_n_results (find, i) > 0) {
4194                                 return TRUE;
4195                         }
4196                 }
4197         }
4198
4199         return FALSE;
4200 }
4201
4202 void
4203 ev_view_find_next (EvView *view)
4204 {
4205         int n_results, n_pages;
4206         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4207
4208         n_results = ev_document_find_get_n_results (find, view->current_page);
4209
4210         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4211
4212         view->find_result++;
4213
4214         if (view->find_result >= n_results) {
4215
4216                 view->find_result = 0;
4217                 jump_to_find_page (view, EV_VIEW_FIND_NEXT, 1);
4218                 jump_to_find_result (view);
4219         } else {
4220                 jump_to_find_result (view);
4221                 gtk_widget_queue_draw (GTK_WIDGET (view));
4222         }
4223 }
4224
4225 gboolean
4226 ev_view_can_find_previous (EvView *view)
4227 {
4228         if (EV_IS_DOCUMENT_FIND (view->document)) {
4229                 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4230                 int i, n_pages;
4231
4232                 n_pages = ev_page_cache_get_n_pages (view->page_cache);
4233                 for (i = n_pages - 1; i >= 0; i--) {
4234                         if (ev_document_find_get_n_results (find, i) > 0) {
4235                                 return TRUE;
4236                         }
4237                 }
4238         }
4239
4240         return FALSE;
4241 }
4242 void
4243 ev_view_find_previous (EvView *view)
4244 {
4245         int n_results, n_pages;
4246         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4247         EvPageCache *page_cache;
4248
4249         page_cache = ev_page_cache_get (view->document);
4250
4251         n_results = ev_document_find_get_n_results (find, view->current_page);
4252
4253         n_pages = ev_page_cache_get_n_pages (page_cache);
4254
4255         view->find_result--;
4256
4257         if (view->find_result < 0) {
4258
4259                 jump_to_find_page (view, EV_VIEW_FIND_PREV, -1);
4260                 view->find_result = ev_document_find_get_n_results (find, view->current_page) - 1;
4261                 jump_to_find_result (view);
4262         } else {
4263                 jump_to_find_result (view);
4264                 gtk_widget_queue_draw (GTK_WIDGET (view));
4265         }
4266 }
4267
4268 void ev_view_search_changed (EvView *view)
4269 {
4270         /* search string has changed, focus on new search result */
4271         view->jump_to_find_result = TRUE;
4272 }
4273
4274 /*** Selections ***/
4275
4276 /* compute_new_selection_rect/text calculates the area currently selected by
4277  * view_rect.  each handles a different mode;
4278  */
4279 static GList *
4280 compute_new_selection_rect (EvView       *view,
4281                             GdkPoint     *start,
4282                             GdkPoint     *stop)
4283 {
4284         GdkRectangle view_rect;
4285         int n_pages, i;
4286         GList *list = NULL;
4287
4288         g_assert (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE);
4289
4290         view_rect.x = MIN (start->x, stop->x);
4291         view_rect.y = MIN (start->y, stop->y);
4292         view_rect.width = MAX (start->x, stop->x) - view_rect.x;
4293         view_rect.width = MAX (start->y, stop->y) - view_rect.y;
4294
4295         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4296
4297         for (i = 0; i < n_pages; i++) {
4298                 GdkRectangle page_area;
4299                 GtkBorder border;
4300
4301                 if (get_page_extents (view, i, &page_area, &border)) {
4302                         GdkRectangle overlap;
4303
4304                         if (gdk_rectangle_intersect (&page_area, &view_rect, &overlap)) {
4305                                 EvViewSelection *selection;
4306
4307                                 selection = g_new0 (EvViewSelection, 1);
4308                                 selection->page = i;
4309                                 view_rect_to_doc_rect (view, &overlap, &page_area,
4310                                                        &(selection->rect));
4311
4312                                 list = g_list_append (list, selection);
4313                         }
4314                 }
4315         }
4316
4317         return list;
4318 }
4319
4320 static gboolean
4321 gdk_rectangle_point_in (GdkRectangle *rectangle,
4322                         GdkPoint     *point)
4323 {
4324         return rectangle->x <= point->x &&
4325                 rectangle->y <= point->y &&
4326                 point->x < rectangle->x + rectangle->width &&
4327                 point->y < rectangle->y + rectangle->height;
4328 }
4329
4330 static GList *
4331 compute_new_selection_text (EvView   *view,
4332                             GdkPoint *start,
4333                             GdkPoint *stop)
4334 {
4335         int n_pages, i, first, last;
4336         GList *list = NULL;
4337         EvViewSelection *selection;
4338         gint width, height;
4339         int start_page, end_page;
4340
4341         g_assert (view->selection_mode == EV_VIEW_SELECTION_TEXT);
4342
4343         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4344
4345         /* First figure out the range of pages the selection
4346          * affects. */
4347         first = n_pages;
4348         last = 0;
4349         if (view->continuous) {
4350                 start_page = 0;
4351                 end_page = n_pages;
4352         } else if (view->dual_page) {
4353                 start_page = view->start_page;
4354                 end_page = view->end_page + 1;
4355         } else {
4356                 start_page = view->current_page;
4357                 end_page = view->current_page + 1;
4358         }
4359
4360         for (i = start_page; i < end_page; i++) {
4361                 GdkRectangle page_area;
4362                 GtkBorder border;
4363
4364                 get_page_extents (view, i, &page_area, &border);
4365                 if (gdk_rectangle_point_in (&page_area, start) ||
4366                     gdk_rectangle_point_in (&page_area, stop)) {
4367                         if (first == n_pages)
4368                                 first = i;
4369                         last = i;
4370                 }
4371
4372         }
4373
4374
4375
4376         /* Now create a list of EvViewSelection's for the affected
4377          * pages.  This could be an empty list, a list of just one
4378          * page or a number of pages.*/
4379         for (i = first; i < last + 1; i++) {
4380                 GdkRectangle page_area;
4381                 GtkBorder border;
4382                 GdkPoint *point;
4383
4384                 ev_page_cache_get_size (view->page_cache, i,
4385                                         view->rotation,
4386                                         1.0, &width, &height);
4387
4388                 selection = g_new0 (EvViewSelection, 1);
4389                 selection->page = i;
4390                 selection->rect.x1 = selection->rect.y1 = 0;
4391                 selection->rect.x2 = width;
4392                 selection->rect.y2 = height;
4393
4394                 get_page_extents (view, i, &page_area, &border);
4395
4396                 if (gdk_rectangle_point_in (&page_area, start))
4397                         point = start;
4398                 else
4399                         point = stop;
4400
4401                 if (i == first)
4402                         view_point_to_doc_point (view, point, &page_area,
4403                                                  &selection->rect.x1,
4404                                                  &selection->rect.y1);
4405
4406                 /* If the selection is contained within just one page,
4407                  * make sure we don't write 'start' into both points
4408                  * in selection->rect. */
4409                 if (first == last)
4410                         point = stop;
4411
4412                 if (i == last)
4413                         view_point_to_doc_point (view, point, &page_area,
4414                                                  &selection->rect.x2,
4415                                                  &selection->rect.y2);
4416
4417                 list = g_list_append (list, selection);
4418         }
4419
4420         return list;
4421 }
4422
4423 /* This function takes the newly calculated list, and figures out which regions
4424  * have changed.  It then queues a redraw approporiately.
4425  */
4426 static void
4427 merge_selection_region (EvView *view,
4428                         GList  *new_list)
4429 {
4430         GList *old_list;
4431         GList *new_list_ptr, *old_list_ptr;
4432
4433         /* Update the selection */
4434         old_list = ev_pixbuf_cache_get_selection_list (view->pixbuf_cache);
4435         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
4436         view->selection_info.selections = new_list;
4437         ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, new_list);
4438         g_object_notify (G_OBJECT (view), "has-selection");
4439
4440         new_list_ptr = new_list;
4441         old_list_ptr = old_list;
4442
4443         while (new_list_ptr || old_list_ptr) {
4444                 EvViewSelection *old_sel, *new_sel;
4445                 int cur_page;
4446                 GdkRegion *region = NULL;
4447
4448                 new_sel = (new_list_ptr) ? (new_list_ptr->data) : NULL;
4449                 old_sel = (old_list_ptr) ? (old_list_ptr->data) : NULL;
4450
4451                 /* Assume that the lists are in order, and we run through them
4452                  * comparing them, one page at a time.  We come out with the
4453                  * first page we see. */
4454                 if (new_sel && old_sel) {
4455                         if (new_sel->page < old_sel->page) {
4456                                 new_list_ptr = new_list_ptr->next;
4457                                 old_sel = NULL;
4458                         } else if (new_sel->page > old_sel->page) {
4459                                 old_list_ptr = old_list_ptr->next;
4460                                 new_sel = NULL;
4461                         } else {
4462                                 new_list_ptr = new_list_ptr->next;
4463                                 old_list_ptr = old_list_ptr->next;
4464                         }
4465                 } else if (new_sel) {
4466                         new_list_ptr = new_list_ptr->next;
4467                 } else if (old_sel) {
4468                         old_list_ptr = old_list_ptr->next;
4469                 }
4470
4471                 g_assert (new_sel || old_sel);
4472
4473                 /* is the page we're looking at on the screen?*/
4474                 cur_page = new_sel ? new_sel->page : old_sel->page;
4475                 if (cur_page < view->start_page || cur_page > view->end_page)
4476                         continue;
4477
4478                 /* seed the cache with a new page.  We are going to need the new
4479                  * region too. */
4480                 if (new_sel) {
4481                         GdkRegion *tmp_region = NULL;
4482                         ev_pixbuf_cache_get_selection_pixbuf (view->pixbuf_cache,
4483                                                               cur_page,
4484                                                               view->scale,
4485                                                               &tmp_region);
4486                         if (tmp_region) {
4487                                 new_sel->covered_region = gdk_region_copy (tmp_region);
4488                         }
4489                 }
4490
4491                 /* Now we figure out what needs redrawing */
4492                 if (old_sel && new_sel) {
4493                         if (old_sel->covered_region &&
4494                             new_sel->covered_region) {
4495                                 /* We only want to redraw the areas that have
4496                                  * changed, so we xor the old and new regions
4497                                  * and redraw if it's different */
4498                                 region = gdk_region_copy (old_sel->covered_region);
4499                                 gdk_region_xor (region, new_sel->covered_region);
4500                                 if (gdk_region_empty (region)) {
4501                                         gdk_region_destroy (region);
4502                                         region = NULL;
4503                                 }
4504                         } else if (old_sel->covered_region) {
4505                                 region = gdk_region_copy (old_sel->covered_region);
4506                         } else if (new_sel->covered_region) {
4507                                 region = gdk_region_copy (new_sel->covered_region);
4508                         }
4509                 } else if (old_sel && !new_sel) {
4510                         if (old_sel->covered_region && !gdk_region_empty (old_sel->covered_region)) {
4511                                 region = gdk_region_copy (old_sel->covered_region);
4512                         }
4513                 } else if (!old_sel && new_sel) {
4514                         if (new_sel->covered_region && !gdk_region_empty (new_sel->covered_region)) {
4515                                 region = gdk_region_copy (new_sel->covered_region);
4516                         }
4517                 } else {
4518                         g_assert_not_reached ();
4519                 }
4520
4521                 /* Redraw the damaged region! */
4522                 if (region) {
4523                         GdkRectangle page_area;
4524                         GtkBorder border;
4525
4526                         get_page_extents (view, cur_page, &page_area, &border);
4527                         gdk_region_offset (region,
4528                                            page_area.x + border.left - view->scroll_x,
4529                                            page_area.y + border.top - view->scroll_y);
4530                         gdk_window_invalidate_region (GTK_WIDGET (view)->window, region, TRUE);
4531                         gdk_region_destroy (region);
4532                 }
4533         }
4534
4535         /* Free the old list, now that we're done with it. */
4536         g_list_foreach (old_list, (GFunc) selection_free, NULL);
4537 }
4538
4539 static void
4540 compute_selections (EvView   *view,
4541                     GdkPoint *start,
4542                     GdkPoint *stop)
4543 {
4544         GList *list;
4545
4546         if (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE)
4547                 list = compute_new_selection_rect (view, start, stop);
4548         else
4549                 list = compute_new_selection_text (view, start, stop);
4550         merge_selection_region (view, list);
4551 }
4552
4553 /* Free's the selection.  It's up to the caller to queue redraws if needed.
4554  */
4555 static void
4556 selection_free (EvViewSelection *selection)
4557 {
4558         if (selection->covered_region)
4559                 gdk_region_destroy (selection->covered_region);
4560         g_free (selection);
4561 }
4562
4563 static void
4564 clear_selection (EvView *view)
4565 {
4566         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
4567         view->selection_info.selections = NULL;
4568         view->selection_info.in_selection = FALSE;
4569         if (view->pixbuf_cache)
4570                 ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, NULL);
4571         g_object_notify (G_OBJECT (view), "has-selection");
4572 }
4573
4574
4575 void
4576 ev_view_select_all (EvView *view)
4577 {
4578         int n_pages, i;
4579
4580         /* Disable selection on rotated pages for the 0.4.0 series */
4581         if (view->rotation != 0)
4582                 return;
4583
4584         clear_selection (view);
4585
4586         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4587         for (i = 0; i < n_pages; i++) {
4588                 int width, height;
4589                 EvViewSelection *selection;
4590
4591                 ev_page_cache_get_size (view->page_cache,
4592                                         i,
4593                                         view->rotation,
4594                                         1.0, &width, &height);
4595
4596                 selection = g_new0 (EvViewSelection, 1);
4597                 selection->page = i;
4598                 selection->rect.x1 = selection->rect.y1 = 0;
4599                 selection->rect.x2 = width;
4600                 selection->rect.y2 = height;
4601
4602                 view->selection_info.selections = g_list_append (view->selection_info.selections, selection);
4603         }
4604
4605         ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, view->selection_info.selections);
4606         g_object_notify (G_OBJECT (view), "has-selection");
4607         gtk_widget_queue_draw (GTK_WIDGET (view));
4608 }
4609
4610 gboolean
4611 ev_view_get_has_selection (EvView *view)
4612 {
4613         return view->selection_info.selections != NULL;
4614 }
4615
4616 static char *
4617 get_selected_text (EvView *ev_view)
4618 {
4619         GString *text;
4620         GList *l;
4621
4622         text = g_string_new (NULL);
4623
4624         ev_document_doc_mutex_lock ();
4625
4626         for (l = ev_view->selection_info.selections; l != NULL; l = l->next) {
4627                 EvViewSelection *selection = (EvViewSelection *)l->data;
4628                 char *tmp;
4629
4630                 tmp = ev_document_get_text (ev_view->document,
4631                                             selection->page,
4632                                             &selection->rect);
4633                 g_string_append (text, tmp);
4634                 g_free (tmp);
4635         }
4636
4637         ev_document_doc_mutex_unlock ();
4638
4639         return g_string_free (text, FALSE);
4640 }
4641
4642 void
4643 ev_view_copy (EvView *ev_view)
4644 {
4645         GtkClipboard *clipboard;
4646         char *text;
4647
4648         if (!ev_document_can_get_text (ev_view->document)) {
4649                 return;
4650         }
4651
4652         text = get_selected_text (ev_view);
4653         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
4654                                               GDK_SELECTION_CLIPBOARD);
4655         gtk_clipboard_set_text (clipboard, text, -1);
4656         g_free (text);
4657 }
4658
4659 static void
4660 ev_view_primary_get_cb (GtkClipboard     *clipboard,
4661                         GtkSelectionData *selection_data,
4662                         guint             info,
4663                         gpointer          data)
4664 {
4665         EvView *ev_view = EV_VIEW (data);
4666         char *text;
4667
4668         if (!ev_document_can_get_text (ev_view->document)) {
4669                 return;
4670         }
4671
4672         text = get_selected_text (ev_view);
4673         gtk_selection_data_set_text (selection_data, text, -1);
4674         g_free (text);
4675 }
4676
4677 static void
4678 ev_view_primary_clear_cb (GtkClipboard *clipboard,
4679                           gpointer      data)
4680 {
4681         EvView *view = EV_VIEW (data);
4682
4683         clear_selection (view);
4684 }
4685
4686 static void
4687 ev_view_update_primary_selection (EvView *ev_view)
4688 {
4689         GtkClipboard *clipboard;
4690
4691         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
4692                                               GDK_SELECTION_PRIMARY);
4693
4694         if (ev_view->selection_info.selections) {
4695                 if (!gtk_clipboard_set_with_owner (clipboard,
4696                                                    clipboard_targets,
4697                                                    G_N_ELEMENTS (clipboard_targets),
4698                                                    ev_view_primary_get_cb,
4699                                                    ev_view_primary_clear_cb,
4700                                                    G_OBJECT (ev_view)))
4701                         ev_view_primary_clear_cb (clipboard, ev_view);
4702         } else {
4703                 if (gtk_clipboard_get_owner (clipboard) == G_OBJECT (ev_view))
4704                         gtk_clipboard_clear (clipboard);
4705         }
4706 }
4707
4708 /*** Cursor operations ***/
4709
4710 static GdkCursor *
4711 ev_view_create_invisible_cursor(void)
4712 {
4713        GdkBitmap *empty;
4714        GdkColor black = { 0, 0, 0, 0 };
4715        static char bits[] = { 0x00 };
4716
4717        empty = gdk_bitmap_create_from_data (NULL, bits, 1, 1);
4718
4719        return gdk_cursor_new_from_pixmap (empty, empty, &black, &black, 0, 0);
4720 }
4721
4722 static void
4723 ev_view_set_cursor (EvView *view, EvViewCursor new_cursor)
4724 {
4725         GdkCursor *cursor = NULL;
4726         GdkDisplay *display;
4727         GtkWidget *widget;
4728
4729         if (view->cursor == new_cursor) {
4730                 return;
4731         }
4732
4733         widget = gtk_widget_get_toplevel (GTK_WIDGET (view));
4734         display = gtk_widget_get_display (widget);
4735         view->cursor = new_cursor;
4736
4737         switch (new_cursor) {
4738                 case EV_VIEW_CURSOR_NORMAL:
4739                         gdk_window_set_cursor (widget->window, NULL);
4740                         break;
4741                 case EV_VIEW_CURSOR_IBEAM:
4742                         cursor = gdk_cursor_new_for_display (display, GDK_XTERM);
4743                         break;
4744                 case EV_VIEW_CURSOR_LINK:
4745                         cursor = gdk_cursor_new_for_display (display, GDK_HAND2);
4746                         break;
4747                 case EV_VIEW_CURSOR_WAIT:
4748                         cursor = gdk_cursor_new_for_display (display, GDK_WATCH);
4749                         break;
4750                 case EV_VIEW_CURSOR_HIDDEN:
4751                         cursor = ev_view_create_invisible_cursor ();
4752                         break;
4753                 case EV_VIEW_CURSOR_DRAG:
4754                         cursor = gdk_cursor_new_for_display (display, GDK_FLEUR);
4755                         break;
4756         }
4757
4758         if (cursor) {
4759                 gdk_window_set_cursor (widget->window, cursor);
4760                 gdk_cursor_unref (cursor);
4761                 gdk_flush();
4762         }
4763 }
4764
4765 void
4766 ev_view_hide_cursor (EvView *view)
4767 {
4768        ev_view_set_cursor (view, EV_VIEW_CURSOR_HIDDEN);
4769 }
4770
4771 void
4772 ev_view_show_cursor (EvView *view)
4773 {
4774        ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
4775 }
4776
4777 static void
4778 ev_view_reset_presentation_state (EvView *view)
4779 {
4780         if (!view->presentation ||
4781             view->presentation_state == EV_PRESENTATION_NORMAL)
4782                 return;
4783
4784         view->presentation_state = EV_PRESENTATION_NORMAL;
4785         gdk_window_set_background (GTK_WIDGET (view)->window,
4786                                    &GTK_WIDGET (view)->style->black);
4787         gtk_widget_queue_draw (GTK_WIDGET (view));
4788 }
4789
4790 gboolean
4791 ev_view_next_page (EvView *view)
4792 {
4793         int page, n_pages;
4794
4795         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4796
4797         if (!view->page_cache)
4798                 return FALSE;
4799
4800         ev_view_presentation_transition_stop (view);
4801         ev_view_reset_presentation_state (view);
4802
4803         page = ev_page_cache_get_current_page (view->page_cache);
4804         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4805
4806         if (view->dual_page && !view->presentation)
4807                 page = page + 2;
4808         else
4809                 page = page + 1;
4810
4811         if (page < n_pages) {
4812                 ev_page_cache_set_current_page (view->page_cache, page);
4813                 return TRUE;
4814         } else if (view->presentation && page == n_pages) {
4815                 view->presentation_state = EV_PRESENTATION_END;
4816                 gtk_widget_queue_draw (GTK_WIDGET (view));
4817                 return TRUE;
4818         } else if (view->dual_page && page == n_pages) {
4819                 ev_page_cache_set_current_page (view->page_cache, page - 1);
4820                 return TRUE;
4821         } else {
4822                 return FALSE;
4823         }
4824 }
4825
4826 gboolean
4827 ev_view_previous_page (EvView *view)
4828 {
4829         int page;
4830
4831         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4832
4833         if (!view->page_cache)
4834                 return FALSE;
4835
4836         if (view->presentation &&
4837             view->presentation_state == EV_PRESENTATION_END) {
4838                 ev_view_reset_presentation_state (view);
4839                 return TRUE;
4840         }
4841
4842         ev_view_reset_presentation_state (view);
4843
4844         page = ev_page_cache_get_current_page (view->page_cache);
4845
4846         if (view->dual_page && !view->presentation)
4847                 page = page - 2;
4848         else
4849                 page = page - 1;
4850
4851         if (page >= 0) {
4852                 ev_page_cache_set_current_page (view->page_cache, page);
4853                 return TRUE;
4854         } else if (ev_view_get_dual_page (view) && page == -1) {
4855                 ev_page_cache_set_current_page (view->page_cache, 0);
4856                 return TRUE;
4857         } else {
4858                 return FALSE;
4859         }
4860 }
4861
4862 /*** Enum description for usage in signal ***/
4863
4864 GType
4865 ev_sizing_mode_get_type (void)
4866 {
4867   static GType etype = 0;
4868   if (etype == 0) {
4869     static const GEnumValue values[] = {
4870       { EV_SIZING_FIT_WIDTH, "EV_SIZING_FIT_WIDTH", "fit-width" },
4871       { EV_SIZING_BEST_FIT, "EV_SIZING_BEST_FIT", "best-fit" },
4872       { EV_SIZING_FREE, "EV_SIZING_FREE", "free" },
4873       { 0, NULL, NULL }
4874     };
4875     etype = g_enum_register_static ("EvSizingMode", values);
4876   }
4877   return etype;
4878 }
4879
4880 GType
4881 ev_scroll_type_get_type (void)
4882 {
4883   static GType etype = 0;
4884   if (etype == 0) {
4885     static const GEnumValue values[] = {
4886       { EV_SCROLL_PAGE_FORWARD, "EV_SCROLL_PAGE_FORWARD", "scroll-page-forward" },
4887       { EV_SCROLL_PAGE_BACKWARD, "EV_SCROLL_PAGE_BACKWARD", "scroll-page-backward" },
4888       { EV_SCROLL_STEP_FORWARD, "EV_SCROLL_STEP_FORWARD", "scroll-step-forward" },
4889       { EV_SCROLL_STEP_FORWARD, "EV_SCROLL_STEP_FORWARD", "scroll-step-forward" },
4890       { EV_SCROLL_STEP_UP, "EV_SCROLL_STEP_UP", "scroll-step-up" },
4891       { EV_SCROLL_STEP_DOWN, "EV_SCROLL_STEP_DOWN", "scroll-step-down" },
4892       { 0, NULL, NULL }
4893     };
4894     etype = g_enum_register_static ("EvScrollType", values);
4895   }
4896   return etype;
4897 }