libview/ev-view-private.h

   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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  19  */
  20
  21 #if !defined (EVINCE_COMPILATION)
  22 #error "This is a private header."
  23 #endif
  24
  25 #ifndef __EV_VIEW_PRIVATE_H__
  26 #define __EV_VIEW_PRIVATE_H__
  27
  28 #include "ev-view.h"
  29 #include "ev-document-model.h"
  30 #include "ev-pixbuf-cache.h"
  31 #include "ev-page-cache.h"
  32 #include "ev-jobs.h"
  33 #include "ev-image.h"
  34 #include "ev-form-field.h"
  35 #include "ev-selection.h"
  36 #include "ev-view-cursor.h"
  37
  38 #define DRAG_HISTORY 10
  39
  40 /* Information for middle clicking and moving around the doc */
  41 typedef struct {
  42         gboolean in_drag;
  43         GdkPoint start;
  44         gdouble hadj;
  45         gdouble vadj;
  46         guint drag_timeout_id;
  47         guint release_timeout_id;
  48         GdkPoint buffer[DRAG_HISTORY];
  49         GdkPoint momentum;
  50 } DragInfo;
  51
  52 /* Autoscrolling */
  53 typedef struct {
  54         gboolean autoscrolling;
  55         guint last_y;
  56         guint start_y;
  57         guint timeout_id;
  58 } AutoScrollInfo;
  59
  60 /* Information for handling selection */
  61 typedef struct {
  62         gboolean in_drag;
  63         GdkPoint start;
  64         gboolean in_selection;
  65         GList *selections;
  66         EvSelectionStyle style;
  67 } SelectionInfo;
  68
  69 /* Information for handling images DND */
  70 typedef struct {
  71         gboolean in_drag;
  72         GdkPoint start;
  73         EvImage *image;
  74 } ImageDNDInfo;
  75
  76 /* Annotation popup windows */
  77 typedef struct {
  78         GtkWidget *window;
  79         guint      page;
  80
  81         /* Current position */
  82         gint       x;
  83         gint       y;
  84
  85         /* EvView root position */
  86         gint       parent_x;
  87         gint       parent_y;
  88
  89         /* Document coords */
  90         gdouble    orig_x;
  91         gdouble    orig_y;
  92
  93         gboolean   visible;
  94         gboolean   moved;
  95 } EvViewWindowChild;
  96
  97 typedef enum {
  98         SCROLL_TO_KEEP_POSITION,
  99         SCROLL_TO_PAGE_POSITION,
 100         SCROLL_TO_CENTER,
 101         SCROLL_TO_FIND_LOCATION,
 102 } PendingScroll;
 103
 104 typedef struct _EvHeightToPageCache {
 105         gint rotation;
 106         gdouble *height_to_page;
 107         gdouble *dual_height_to_page;
 108 } EvHeightToPageCache;
 109
 110 struct _EvView {
 111         GtkLayout layout;
 112
 113         /* Container */
 114         GList *children;
 115
 116         EvDocument *document;
 117
 118         /* Find */
 119         GList **find_pages;
 120         gint find_result;
 121         gboolean jump_to_find_result;
 122         gboolean highlight_find_results;
 123
 124         EvDocumentModel *model;
 125         EvPixbufCache *pixbuf_cache;
 126         gsize pixbuf_cache_size;
 127         EvPageCache *page_cache;
 128         EvHeightToPageCache *height_to_page_cache;
 129         EvViewCursor cursor;
 130         EvJobRender *current_job;
 131
 132         GtkRequisition requisition;
 133         gboolean       internal_size_request;
 134
 135         /* Scrolling */
 136         GtkAdjustment *hadjustment;
 137         GtkAdjustment *vadjustment;
 138         /* GtkScrollablePolicy needs to be checked when
 139          * driving the scrollable adjustment values */
 140         guint hscroll_policy : 1;
 141         guint vscroll_policy : 1;
 142
 143         gint scroll_x;
 144         gint scroll_y;
 145
 146         PendingScroll pending_scroll;
 147         gboolean      pending_resize;
 148         EvPoint       pending_point;
 149
 150         /* Current geometry */
 151
 152         gint start_page;
 153         gint end_page;
 154         gint current_page;
 155
 156         gint rotation;
 157         gdouble scale;
 158         gint spacing;
 159
 160         gboolean loading;
 161         gboolean continuous;
 162         gboolean dual_page;
 163         gboolean fullscreen;
 164         EvSizingMode sizing_mode;
 165         GtkWidget *loading_window;
 166         guint loading_timeout;
 167
 168         /* Common for button press handling */
 169         int pressed_button;
 170
 171         /* Information for middle clicking and dragging around. */
 172         DragInfo drag_info;
 173
 174         /* Autoscrolling */
 175         AutoScrollInfo scroll_info;
 176
 177         /* Selection */
 178         GdkPoint motion;
 179         guint selection_update_id;
 180         guint selection_scroll_id;
 181
 182         EvViewSelectionMode selection_mode;
 183         SelectionInfo selection_info;
 184
 185         /* Copy link address selection */
 186         EvLinkAction *link_selected;
 187
 188         /* Image DND */
 189         ImageDNDInfo image_dnd_info;
 190
 191         /* Annotations */
 192         GList             *window_children;
 193         EvViewWindowChild *window_child_focus;
 194         EvMapping         *focus_annotation;
 195         gboolean           adding_annot;
 196         EvAnnotationType   adding_annot_type;
 197
 198         /* Synctex */
 199         EvMapping *synctex_result;
 200
 201         /* Accessibility */
 202         gboolean a11y_enabled;
 203 };
 204
 205 struct _EvViewClass {
 206         GtkLayoutClass parent_class;
 207
 208         void    (*binding_activated)      (EvView         *view,
 209                                            GtkScrollType   scroll,
 210                                            gboolean        horizontal);
 211         void    (*handle_link)            (EvView         *view,
 212                                            EvLink         *link);
 213         void    (*external_link)          (EvView         *view,
 214                                            EvLinkAction   *action);
 215         void    (*popup_menu)             (EvView         *view,
 216                                            GList          *items);
 217         void    (*selection_changed)      (EvView         *view);
 218         void    (*sync_source)            (EvView         *view,
 219                                            EvSourceLink   *link);
 220         void    (*annot_added)            (EvView         *view,
 221                                            EvAnnotation   *annot);
 222         void    (*layers_changed)         (EvView         *view);
 223 };
 224
 225 void _get_page_size_for_scale_and_rotation (EvDocument *document,
 226                                             gint        page,
 227                                             gdouble     scale,
 228                                             gint        rotation,
 229                                             gint       *page_width,
 230                                             gint       *page_height);
 231
 232 #endif  /* __EV_VIEW_PRIVATE_H__ */
 233