backend/pdf/ev-poppler.cc

   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) 2009, Juanjo Marín <juanj.marin@juntadeandalucia.es>
   5  * Copyright (C) 2004, Red Hat, Inc.
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2, or (at your option)
  10  * any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  20  */
  21
  22 #include "config.h"
  23
  24 #include <math.h>
  25 #include <string.h>
  26 #include <gtk/gtk.h>
  27 #include <poppler.h>
  28 #include <poppler-document.h>
  29 #include <poppler-page.h>
  30 #ifdef HAVE_CAIRO_PDF
  31 #include <cairo-pdf.h>
  32 #endif
  33 #ifdef HAVE_CAIRO_PS
  34 #include <cairo-ps.h>
  35 #endif
  36 #include <glib/gi18n-lib.h>
  37
  38 #include "ev-poppler.h"
  39 #include "ev-file-exporter.h"
  40 #include "ev-mapping.h"
  41 #include "ev-document-find.h"
  42 #include "ev-document-misc.h"
  43 #include "ev-document-links.h"
  44 #include "ev-document-images.h"
  45 #include "ev-document-fonts.h"
  46 #include "ev-document-security.h"
  47 #include "ev-document-thumbnails.h"
  48 #include "ev-document-transition.h"
  49 #include "ev-document-forms.h"
  50 #include "ev-document-layers.h"
  51 #include "ev-document-print.h"
  52 #include "ev-document-annotations.h"
  53 #include "ev-document-attachments.h"
  54 #include "ev-document-text.h"
  55 #include "ev-selection.h"
  56 #include "ev-transition-effect.h"
  57 #include "ev-attachment.h"
  58 #include "ev-image.h"
  59
  60 #include <libxml/tree.h>
  61 #include <libxml/parser.h>
  62 #include <libxml/xpath.h>
  63 #include <libxml/xpathInternals.h>
  64
  65 #if (defined (HAVE_CAIRO_PDF) || defined (HAVE_CAIRO_PS))
  66 #define HAVE_CAIRO_PRINT
  67 #endif
  68
  69 /* fields from the XMP Rights Management Schema, XMP Specification Sept 2005, pag. 45 */
  70 #define LICENSE_MARKED "/x:xmpmeta/rdf:RDF/rdf:Description/xmpRights:Marked"
  71 #define LICENSE_TEXT "/x:xmpmeta/rdf:RDF/rdf:Description/dc:rights/rdf:Alt/rdf:li[lang('%s')]"
  72 #define LICENSE_WEB_STATEMENT "/x:xmpmeta/rdf:RDF/rdf:Description/xmpRights:WebStatement"
  73 /* license field from Creative Commons schema, http://creativecommons.org/ns */
  74 #define LICENSE_URI "/x:xmpmeta/rdf:RDF/rdf:Description/cc:license/@rdf:resource"
  75
  76 typedef struct {
  77         EvFileExporterFormat format;
  78
  79         /* Pages per sheet */
  80         gint pages_per_sheet;
  81         gint pages_printed;
  82         gint pages_x;
  83         gint pages_y;
  84         gdouble paper_width;
  85         gdouble paper_height;
  86
  87 #ifdef HAVE_CAIRO_PRINT
  88         cairo_t *cr;
  89 #else
  90         PopplerPSFile *ps_file;
  91 #endif
  92 } PdfPrintContext;
  93
  94 struct _PdfDocumentClass
  95 {
  96         EvDocumentClass parent_class;
  97 };
  98
  99 struct _PdfDocument
 100 {
 101         EvDocument parent_instance;
 102
 103         PopplerDocument *document;
 104         gchar *password;
 105         gboolean modified;
 106
 107         PopplerFontInfo *font_info;
 108         PopplerFontsIter *fonts_iter;
 109         int fonts_scanned_pages;
 110
 111         PdfPrintContext *print_ctx;
 112
 113         GList *layers;
 114 };
 115
 116 static void pdf_document_security_iface_init             (EvDocumentSecurityInterface    *iface);
 117 static void pdf_document_document_thumbnails_iface_init  (EvDocumentThumbnailsInterface  *iface);
 118 static void pdf_document_document_links_iface_init       (EvDocumentLinksInterface       *iface);
 119 static void pdf_document_document_images_iface_init      (EvDocumentImagesInterface      *iface);
 120 static void pdf_document_document_forms_iface_init       (EvDocumentFormsInterface       *iface);
 121 static void pdf_document_document_fonts_iface_init       (EvDocumentFontsInterface       *iface);
 122 static void pdf_document_document_layers_iface_init      (EvDocumentLayersInterface      *iface);
 123 static void pdf_document_document_print_iface_init       (EvDocumentPrintInterface       *iface);
 124 static void pdf_document_document_annotations_iface_init (EvDocumentAnnotationsInterface *iface);
 125 static void pdf_document_document_attachments_iface_init (EvDocumentAttachmentsInterface *iface);
 126 static void pdf_document_find_iface_init                 (EvDocumentFindInterface        *iface);
 127 static void pdf_document_file_exporter_iface_init        (EvFileExporterInterface        *iface);
 128 static void pdf_selection_iface_init                     (EvSelectionInterface           *iface);
 129 static void pdf_document_page_transition_iface_init      (EvDocumentTransitionInterface  *iface);
 130 static void pdf_document_text_iface_init                 (EvDocumentTextInterface        *iface);
 131 static void pdf_document_thumbnails_get_dimensions       (EvDocumentThumbnails           *document_thumbnails,
 132                                                           EvRenderContext                *rc,
 133                                                           gint                           *width,
 134                                                           gint                           *height);
 135 static int  pdf_document_get_n_pages                     (EvDocument                     *document);
 136
 137 static EvLinkDest *ev_link_dest_from_dest    (PdfDocument       *pdf_document,
 138                                               PopplerDest       *dest);
 139 static EvLink     *ev_link_from_action       (PdfDocument       *pdf_document,
 140                                               PopplerAction     *action);
 141 static void        pdf_print_context_free    (PdfPrintContext   *ctx);
 142 static gboolean    attachment_save_to_buffer (PopplerAttachment *attachment,
 143                                               gchar            **buffer,
 144                                               gsize             *buffer_size,
 145                                               GError           **error);
 146
 147 EV_BACKEND_REGISTER_WITH_CODE (PdfDocument, pdf_document,
 148                          {
 149                                  EV_BACKEND_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_SECURITY,
 150                                                                  pdf_document_security_iface_init);
 151                                  EV_BACKEND_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_THUMBNAILS,
 152                                                                  pdf_document_document_thumbnails_iface_init);
 153                                  EV_BACKEND_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_LINKS,
 154                                                                  pdf_document_document_links_iface_init);
 155                                  EV_BACKEND_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_IMAGES,
 156                                                                  pdf_document_document_images_iface_init);
 157                                  EV_BACKEND_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_FORMS,
 158                                                                  pdf_document_document_forms_iface_init);
 159                                  EV_BACKEND_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_FONTS,
 160                                                                  pdf_document_document_fonts_iface_init);
 161                                  EV_BACKEND_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_LAYERS,
 162                                                                  pdf_document_document_layers_iface_init);
 163                                  EV_BACKEND_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_PRINT,
 164                                                                  pdf_document_document_print_iface_init);
 165                                  EV_BACKEND_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_ANNOTATIONS,
 166                                                                  pdf_document_document_annotations_iface_init);
 167                                  EV_BACKEND_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_ATTACHMENTS,
 168                                                                  pdf_document_document_attachments_iface_init);
 169                                  EV_BACKEND_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_FIND,
 170                                                                  pdf_document_find_iface_init);
 171                                  EV_BACKEND_IMPLEMENT_INTERFACE (EV_TYPE_FILE_EXPORTER,
 172                                                                  pdf_document_file_exporter_iface_init);
 173                                  EV_BACKEND_IMPLEMENT_INTERFACE (EV_TYPE_SELECTION,
 174                                                                  pdf_selection_iface_init);
 175                                  EV_BACKEND_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_TRANSITION,
 176                                                                  pdf_document_page_transition_iface_init);
 177                                  EV_BACKEND_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_TEXT,
 178                                                                  pdf_document_text_iface_init);
 179                          });
 180
 181 static void
 182 pdf_document_dispose (GObject *object)
 183 {
 184         PdfDocument *pdf_document = PDF_DOCUMENT(object);
 185
 186         if (pdf_document->print_ctx) {
 187                 pdf_print_context_free (pdf_document->print_ctx);
 188                 pdf_document->print_ctx = NULL;
 189         }
 190
 191         if (pdf_document->document) {
 192                 g_object_unref (pdf_document->document);
 193         }
 194
 195         if (pdf_document->font_info) {
 196                 poppler_font_info_free (pdf_document->font_info);
 197         }
 198
 199         if (pdf_document->fonts_iter) {
 200                 poppler_fonts_iter_free (pdf_document->fonts_iter);
 201         }
 202
 203         if (pdf_document->layers) {
 204                 g_list_foreach (pdf_document->layers, (GFunc)g_object_unref, NULL);
 205                 g_list_free (pdf_document->layers);
 206         }
 207
 208         G_OBJECT_CLASS (pdf_document_parent_class)->dispose (object);
 209 }
 210
 211 static void
 212 pdf_document_init (PdfDocument *pdf_document)
 213 {
 214         pdf_document->password = NULL;
 215 }
 216
 217 static void
 218 convert_error (GError  *poppler_error,
 219                GError **error)
 220 {
 221         if (poppler_error == NULL)
 222                 return;
 223
 224         if (poppler_error->domain == POPPLER_ERROR) {
 225                 /* convert poppler errors into EvDocument errors */
 226                 gint code = EV_DOCUMENT_ERROR_INVALID;
 227                 if (poppler_error->code == POPPLER_ERROR_INVALID)
 228                         code = EV_DOCUMENT_ERROR_INVALID;
 229                 else if (poppler_error->code == POPPLER_ERROR_ENCRYPTED)
 230                         code = EV_DOCUMENT_ERROR_ENCRYPTED;
 231
 232                 g_set_error_literal (error,
 233                                      EV_DOCUMENT_ERROR,
 234                                      code,
 235                                      poppler_error->message);
 236
 237                 g_error_free (poppler_error);
 238         } else {
 239                 g_propagate_error (error, poppler_error);
 240         }
 241 }
 242
 243
 244 /* EvDocument */
 245 static gboolean
 246 pdf_document_save (EvDocument  *document,
 247                    const char  *uri,
 248                    GError     **error)
 249 {
 250         PdfDocument *pdf_document = PDF_DOCUMENT (document);
 251         gboolean retval;
 252         GError *poppler_error = NULL;
 253
 254         if (pdf_document->modified) {
 255                 retval = poppler_document_save (pdf_document->document,
 256                                                 uri, &poppler_error);
 257         } else {
 258                 retval = poppler_document_save_a_copy (pdf_document->document,
 259                                                        uri, &poppler_error);
 260         }
 261
 262         if (! retval)
 263                 convert_error (poppler_error, error);
 264
 265         return retval;
 266 }
 267
 268 static gboolean
 269 pdf_document_load (EvDocument   *document,
 270                    const char   *uri,
 271                    GError      **error)
 272 {
 273         GError *poppler_error = NULL;
 274         PdfDocument *pdf_document = PDF_DOCUMENT (document);
 275
 276         pdf_document->document =
 277                 poppler_document_new_from_file (uri, pdf_document->password, &poppler_error);
 278
 279         if (pdf_document->document == NULL) {
 280                 convert_error (poppler_error, error);
 281                 return FALSE;
 282         }
 283
 284         return TRUE;
 285 }
 286
 287 static int
 288 pdf_document_get_n_pages (EvDocument *document)
 289 {
 290         return poppler_document_get_n_pages (PDF_DOCUMENT (document)->document);
 291 }
 292
 293 static EvPage *
 294 pdf_document_get_page (EvDocument *document,
 295                        gint        index)
 296 {
 297         PdfDocument *pdf_document = PDF_DOCUMENT (document);
 298         PopplerPage *poppler_page;
 299         EvPage      *page;
 300
 301         poppler_page = poppler_document_get_page (pdf_document->document, index);
 302         page = ev_page_new (index);
 303         page->backend_page = (EvBackendPage)g_object_ref (poppler_page);
 304         page->backend_destroy_func = (EvBackendPageDestroyFunc)g_object_unref;
 305         g_object_unref (poppler_page);
 306
 307         return page;
 308 }
 309
 310 static void
 311 pdf_document_get_page_size (EvDocument *document,
 312                             EvPage     *page,
 313                             double     *width,
 314                             double     *height)
 315 {
 316         g_return_if_fail (POPPLER_IS_PAGE (page->backend_page));
 317
 318         poppler_page_get_size (POPPLER_PAGE (page->backend_page), width, height);
 319 }
 320
 321 static char *
 322 pdf_document_get_page_label (EvDocument *document,
 323                              EvPage     *page)
 324 {
 325         char *label = NULL;
 326
 327         g_return_val_if_fail (POPPLER_IS_PAGE (page->backend_page), NULL);
 328
 329         g_object_get (G_OBJECT (page->backend_page),
 330                       "label", &label,
 331                       NULL);
 332         return label;
 333 }
 334
 335 static cairo_surface_t *
 336 pdf_page_render (PopplerPage     *page,
 337                  gint             width,
 338                  gint             height,
 339                  EvRenderContext *rc)
 340 {
 341         cairo_surface_t *surface;
 342         cairo_t *cr;
 343
 344         surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
 345                                               width, height);
 346         cr = cairo_create (surface);
 347
 348         switch (rc->rotation) {
 349                 case 90:
 350                         cairo_translate (cr, width, 0);
 351                         break;
 352                 case 180:
 353                         cairo_translate (cr, width, height);
 354                         break;
 355                 case 270:
 356                         cairo_translate (cr, 0, height);
 357                         break;
 358                 default:
 359                         cairo_translate (cr, 0, 0);
 360         }
 361         cairo_scale (cr, rc->scale, rc->scale);
 362         cairo_rotate (cr, rc->rotation * G_PI / 180.0);
 363         poppler_page_render (page, cr);
 364
 365         cairo_set_operator (cr, CAIRO_OPERATOR_DEST_OVER);
 366         cairo_set_source_rgb (cr, 1., 1., 1.);
 367         cairo_paint (cr);
 368
 369         cairo_destroy (cr);
 370
 371         return surface;
 372 }
 373
 374 static cairo_surface_t *
 375 pdf_document_render (EvDocument      *document,
 376                      EvRenderContext *rc)
 377 {
 378         PdfDocument *pdf_document;
 379         PopplerPage *poppler_page;
 380         double width_points, height_points;
 381         gint width, height;
 382
 383         poppler_page = POPPLER_PAGE (rc->page->backend_page);
 384
 385         poppler_page_get_size (poppler_page,
 386                                &width_points, &height_points);
 387
 388         if (rc->rotation == 90 || rc->rotation == 270) {
 389                 width = (int) ((height_points * rc->scale) + 0.5);
 390                 height = (int) ((width_points * rc->scale) + 0.5);
 391         } else {
 392                 width = (int) ((width_points * rc->scale) + 0.5);
 393                 height = (int) ((height_points * rc->scale) + 0.5);
 394         }
 395
 396         return pdf_page_render (poppler_page,
 397                                 width, height, rc);
 398 }
 399
 400 /* reference:
 401 http://www.pdfa.org/lib/exe/fetch.php?id=pdfa%3Aen%3Atechdoc&cache=cache&media=pdfa:techdoc:tn0001_pdfa-1_and_namespaces_2008-03-18.pdf */
 402 static char *
 403 pdf_document_get_format_from_metadata (xmlDocPtr          doc,
 404                                        xmlXPathContextPtr xpathCtx)
 405 {
 406         xmlXPathObjectPtr xpathObj;
 407         xmlChar *part = NULL;
 408         xmlChar *conf = NULL;
 409         char *result = NULL;
 410         int i;
 411
 412         /* add pdf/a namespaces */
 413         xmlXPathRegisterNs (xpathCtx, BAD_CAST "x", BAD_CAST "adobe:ns:meta/");
 414         xmlXPathRegisterNs (xpathCtx, BAD_CAST "rdf", BAD_CAST "http://www.w3.org/1999/02/22-rdf-syntax-ns#");
 415         xmlXPathRegisterNs (xpathCtx, BAD_CAST "pdfaid", BAD_CAST "http://www.aiim.org/pdfa/ns/id/");
 416
 417         /* reads pdf/a part */
 418         /* first syntax: child node */
 419         xpathObj = xmlXPathEvalExpression (BAD_CAST "/x:xmpmeta/rdf:RDF/rdf:Description/pdfaid:part", xpathCtx);
 420         if (xpathObj != NULL) {
 421                 if (xpathObj->nodesetval != NULL && xpathObj->nodesetval->nodeNr != 0)
 422                         part = xmlNodeGetContent (xpathObj->nodesetval->nodeTab[0]);
 423
 424                 xmlXPathFreeObject (xpathObj);
 425         }
 426         if (part == NULL) {
 427                 /* second syntax: attribute */
 428                 xpathObj = xmlXPathEvalExpression (BAD_CAST "/x:xmpmeta/rdf:RDF/rdf:Description/@pdfaid:part", xpathCtx);
 429                 if (xpathObj != NULL) {
 430                         if (xpathObj->nodesetval != NULL && xpathObj->nodesetval->nodeNr != 0)
 431                                 part = xmlNodeGetContent (xpathObj->nodesetval->nodeTab[0]);
 432
 433                         xmlXPathFreeObject (xpathObj);
 434                 }
 435         }
 436
 437         /* reads pdf/a conformance */
 438         /* first syntax: child node */
 439         xpathObj = xmlXPathEvalExpression (BAD_CAST "/x:xmpmeta/rdf:RDF/rdf:Description/pdfaid:conformance", xpathCtx);
 440         if (xpathObj != NULL) {
 441                 if (xpathObj->nodesetval != NULL && xpathObj->nodesetval->nodeNr != 0)
 442                         conf = xmlNodeGetContent (xpathObj->nodesetval->nodeTab[0]);
 443
 444                 xmlXPathFreeObject (xpathObj);
 445         }
 446         if (conf == NULL) {
 447                 /* second syntax: attribute */
 448                 xpathObj = xmlXPathEvalExpression (BAD_CAST "/x:xmpmeta/rdf:RDF/rdf:Description/@pdfaid:conformance", xpathCtx);
 449                 if (xpathObj != NULL) {
 450                         if (xpathObj->nodesetval != NULL && xpathObj->nodesetval->nodeNr != 0)
 451                                 conf = xmlNodeGetContent (xpathObj->nodesetval->nodeTab[0]);
 452
 453                         xmlXPathFreeObject (xpathObj);
 454                 }
 455         }
 456
 457         if (part != NULL && conf != NULL) {
 458                 /* makes conf lowercase */
 459                 for (i = 0; conf[i]; i++)
 460                         conf[i] = g_ascii_tolower (conf[i]);
 461
 462                 /* return buffer */
 463                 result = g_strdup_printf ("PDF/A - %s%s", part, conf);
 464         }
 465
 466         /* Cleanup */
 467         xmlFree (part);
 468         xmlFree (conf);
 469
 470         return result;
 471 }
 472
 473 static EvDocumentLicense *
 474 pdf_document_get_license_from_metadata (xmlDocPtr          doc,
 475                                         xmlXPathContextPtr xpathCtx)
 476 {
 477         xmlXPathObjectPtr xpathObj;
 478         xmlChar *marked = NULL;
 479         const char *language_string;
 480         char  *aux;
 481         gchar **tags;
 482         gchar *tag, *tag_aux;
 483         int i, j;
 484         EvDocumentLicense *license;
 485
 486         /* register namespaces */
 487         xmlXPathRegisterNs (xpathCtx, BAD_CAST "x", BAD_CAST "adobe:ns:meta/");
 488         xmlXPathRegisterNs (xpathCtx, BAD_CAST "rdf", BAD_CAST "http://www.w3.org/1999/02/22-rdf-syntax-ns#");
 489         xmlXPathRegisterNs (xpathCtx, BAD_CAST "dc", BAD_CAST "http://purl.org/dc/elements/1.1/");
 490         /* XMP Rights Management Schema */
 491         xmlXPathRegisterNs (xpathCtx, BAD_CAST "xmpRights", BAD_CAST "http://ns.adobe.com/xap/1.0/rights/");
 492         /* Creative Commons Schema */
 493         xmlXPathRegisterNs (xpathCtx, BAD_CAST "cc", BAD_CAST "http://creativecommons.org/ns#");
 494
 495         /* checking if the document has been marked as defined on the XMP Rights
 496          * Management Schema */
 497         xpathObj = xmlXPathEvalExpression (BAD_CAST LICENSE_MARKED, xpathCtx);
 498         if (xpathObj != NULL) {
 499                 if (xpathObj->nodesetval != NULL &&
 500                     xpathObj->nodesetval->nodeNr != 0)
 501                         marked = xmlNodeGetContent (xpathObj->nodesetval->nodeTab[0]);
 502                 xmlXPathFreeObject (xpathObj);
 503         }
 504
 505         /* a) Not marked => No XMP Rights information */
 506         if (!marked) {
 507                 xmlFree (marked);
 508                 return NULL;
 509         }
 510
 511         license = ev_document_license_new ();
 512
 513         /* b) Marked False => Public Domain, no copyrighted material and no
 514          * license needed */
 515         if (g_strrstr ((char *) marked, "False") != NULL) {
 516                 license->text = g_strdup (_("This work is in the Public Domain"));
 517         /* c) Marked True => Copyrighted material */
 518         } else {
 519                 /* Checking usage terms as defined by the XMP Rights Management
 520                  * Schema. This field is recomended to be checked by Creative
 521                  * Commons */
 522                 /* 1) checking for a suitable localized string */
 523                 language_string = pango_language_to_string (gtk_get_default_language ());
 524                 tags = g_strsplit (language_string, "-", -1);
 525                 i = g_strv_length (tags);
 526                 while (i-- && !license->text) {
 527                         tag = g_strdup (tags[0]);
 528                         for (j = 1; j <= i; j++) {
 529                                 tag_aux = g_strdup_printf ("%s-%s", tag, tags[j]);
 530                                 g_free (tag);
 531                                 tag = tag_aux;
 532                         }
 533                         aux = g_strdup_printf (LICENSE_TEXT, tag);
 534                         xpathObj = xmlXPathEvalExpression (BAD_CAST aux, xpathCtx);
 535                         if (xpathObj != NULL) {
 536                                 if (xpathObj->nodesetval != NULL &&
 537                                     xpathObj->nodesetval->nodeNr != 0)
 538                                         license->text = (gchar *)xmlNodeGetContent (xpathObj->nodesetval->nodeTab[0]);
 539                                 xmlXPathFreeObject (xpathObj);
 540                         }
 541                         g_free (tag);
 542                         g_free (aux);
 543                 }
 544                 g_strfreev(tags);
 545
 546                 /* 2) if not, use the default string */
 547                 if (!license->text) {
 548                         aux = g_strdup_printf (LICENSE_TEXT, "x-default");
 549                         xpathObj = xmlXPathEvalExpression (BAD_CAST aux, xpathCtx);
 550                         if (xpathObj != NULL) {
 551                                 if (xpathObj->nodesetval != NULL &&
 552                                     xpathObj->nodesetval->nodeNr != 0)
 553                                         license->text = (gchar *)xmlNodeGetContent (xpathObj->nodesetval->nodeTab[0]);
 554                                 xmlXPathFreeObject (xpathObj);
 555                         }
 556                         g_free (aux);
 557                 }
 558
 559                 /* Checking the license URI as defined by the Creative Commons
 560                  * Schema. This field is recomended to be checked by Creative
 561                  * Commons */
 562                 xpathObj = xmlXPathEvalExpression (BAD_CAST LICENSE_URI, xpathCtx);
 563                 if (xpathObj != NULL) {
 564                         if (xpathObj->nodesetval != NULL &&
 565                             xpathObj->nodesetval->nodeNr != 0)
 566                                 license->uri = (gchar *)xmlNodeGetContent (xpathObj->nodesetval->nodeTab[0]);
 567                         xmlXPathFreeObject (xpathObj);
 568                 }
 569
 570                 /* Checking the web statement as defined by the XMP Rights
 571                  * Management Schema. Checking it out is a sort of above-and-beyond
 572                  * the basic recommendations by Creative Commons. It can be
 573                  * considered as a "reinforcement" approach to add certainty. */
 574                 xpathObj = xmlXPathEvalExpression (BAD_CAST LICENSE_WEB_STATEMENT, xpathCtx);
 575                 if (xpathObj != NULL) {
 576                         if (xpathObj->nodesetval != NULL &&
 577                             xpathObj->nodesetval->nodeNr != 0)
 578                                 license->web_statement = (gchar *)xmlNodeGetContent (xpathObj->nodesetval->nodeTab[0]);
 579                         xmlXPathFreeObject (xpathObj);
 580                 }
 581         }
 582         xmlFree (marked);
 583
 584         if (!license->text && !license->uri && !license->web_statement) {
 585                 ev_document_license_free (license);
 586                 return NULL;
 587         }
 588
 589         return license;
 590 }
 591
 592 static void
 593 pdf_document_parse_metadata (const gchar    *metadata,
 594                              EvDocumentInfo *info)
 595 {
 596         xmlDocPtr          doc;
 597         xmlXPathContextPtr xpathCtx;
 598         gchar             *fmt;
 599
 600         doc = xmlParseMemory (metadata, strlen (metadata));
 601         if (doc == NULL)
 602                 return;         /* invalid xml metadata */
 603
 604         xpathCtx = xmlXPathNewContext (doc);
 605         if (xpathCtx == NULL) {
 606                 xmlFreeDoc (doc);
 607                 return;         /* invalid xpath context */
 608         }
 609
 610         fmt = pdf_document_get_format_from_metadata (doc, xpathCtx);
 611         if (fmt != NULL) {
 612                 g_free (info->format);
 613                 info->format = fmt;
 614         }
 615
 616         info->license = pdf_document_get_license_from_metadata (doc, xpathCtx);
 617
 618         xmlXPathFreeContext (xpathCtx);
 619         xmlFreeDoc (doc);
 620 }
 621
 622
 623 static EvDocumentInfo *
 624 pdf_document_get_info (EvDocument *document)
 625 {
 626         EvDocumentInfo *info;
 627         PopplerPageLayout layout;
 628         PopplerPageMode mode;
 629         PopplerViewerPreferences view_prefs;
 630         PopplerPermissions permissions;
 631         EvPage *page;
 632         char *metadata;
 633
 634         info = g_new0 (EvDocumentInfo, 1);
 635
 636         info->fields_mask = EV_DOCUMENT_INFO_TITLE |
 637                             EV_DOCUMENT_INFO_FORMAT |
 638                             EV_DOCUMENT_INFO_AUTHOR |
 639                             EV_DOCUMENT_INFO_SUBJECT |
 640                             EV_DOCUMENT_INFO_KEYWORDS |
 641                             EV_DOCUMENT_INFO_LAYOUT |
 642                             EV_DOCUMENT_INFO_START_MODE |
 643                             EV_DOCUMENT_INFO_PERMISSIONS |
 644                             EV_DOCUMENT_INFO_UI_HINTS |
 645                             EV_DOCUMENT_INFO_CREATOR |
 646                             EV_DOCUMENT_INFO_PRODUCER |
 647                             EV_DOCUMENT_INFO_CREATION_DATE |
 648                             EV_DOCUMENT_INFO_MOD_DATE |
 649                             EV_DOCUMENT_INFO_LINEARIZED |
 650                             EV_DOCUMENT_INFO_N_PAGES |
 651                             EV_DOCUMENT_INFO_SECURITY |
 652                             EV_DOCUMENT_INFO_PAPER_SIZE |
 653                             EV_DOCUMENT_INFO_LICENSE;
 654
 655         g_object_get (PDF_DOCUMENT (document)->document,
 656                       "title", &(info->title),
 657                       "format", &(info->format),
 658                       "author", &(info->author),
 659                       "subject", &(info->subject),
 660                       "keywords", &(info->keywords),
 661                       "page-mode", &mode,
 662                       "page-layout", &layout,
 663                       "viewer-preferences", &view_prefs,
 664                       "permissions", &permissions,
 665                       "creator", &(info->creator),
 666                       "producer", &(info->producer),
 667                       "creation-date", &(info->creation_date),
 668                       "mod-date", &(info->modified_date),
 669                       "linearized", &(info->linearized),
 670                       "metadata", &metadata,
 671                       NULL);
 672
 673         if (metadata != NULL) {
 674                 pdf_document_parse_metadata (metadata, info);
 675                 g_free (metadata);
 676         }
 677
 678         info->n_pages = ev_document_get_n_pages (document);
 679
 680         if (info->n_pages > 0) {
 681                 ev_document_get_page_size (document, 0,
 682                                            &(info->paper_width),
 683                                            &(info->paper_height));
 684                 // Convert to mm.
 685                 info->paper_width = info->paper_width / 72.0f * 25.4f;
 686                 info->paper_height = info->paper_height / 72.0f * 25.4f;
 687         }
 688
 689         switch (layout) {
 690                 case POPPLER_PAGE_LAYOUT_SINGLE_PAGE:
 691                         info->layout = EV_DOCUMENT_LAYOUT_SINGLE_PAGE;
 692                         break;
 693                 case POPPLER_PAGE_LAYOUT_ONE_COLUMN:
 694                         info->layout = EV_DOCUMENT_LAYOUT_ONE_COLUMN;
 695                         break;
 696                 case POPPLER_PAGE_LAYOUT_TWO_COLUMN_LEFT:
 697                         info->layout = EV_DOCUMENT_LAYOUT_TWO_COLUMN_LEFT;
 698                         break;
 699                 case POPPLER_PAGE_LAYOUT_TWO_COLUMN_RIGHT:
 700                         info->layout = EV_DOCUMENT_LAYOUT_TWO_COLUMN_RIGHT;
 701                 case POPPLER_PAGE_LAYOUT_TWO_PAGE_LEFT:
 702                         info->layout = EV_DOCUMENT_LAYOUT_TWO_PAGE_LEFT;
 703                         break;
 704                 case POPPLER_PAGE_LAYOUT_TWO_PAGE_RIGHT:
 705                         info->layout = EV_DOCUMENT_LAYOUT_TWO_PAGE_RIGHT;
 706                         break;
 707                 default:
 708                         break;
 709         }
 710
 711         switch (mode) {
 712                 case POPPLER_PAGE_MODE_NONE:
 713                         info->mode = EV_DOCUMENT_MODE_NONE;
 714                         break;
 715                 case POPPLER_PAGE_MODE_USE_THUMBS:
 716                         info->mode = EV_DOCUMENT_MODE_USE_THUMBS;
 717                         break;
 718                 case POPPLER_PAGE_MODE_USE_OC:
 719                         info->mode = EV_DOCUMENT_MODE_USE_OC;
 720                         break;
 721                 case POPPLER_PAGE_MODE_FULL_SCREEN:
 722                         info->mode = EV_DOCUMENT_MODE_FULL_SCREEN;
 723                         break;
 724                 case POPPLER_PAGE_MODE_USE_ATTACHMENTS:
 725                         info->mode = EV_DOCUMENT_MODE_USE_ATTACHMENTS;
 726                 default:
 727                         break;
 728         }
 729
 730         info->ui_hints = 0;
 731         if (view_prefs & POPPLER_VIEWER_PREFERENCES_HIDE_TOOLBAR) {
 732                 info->ui_hints |= EV_DOCUMENT_UI_HINT_HIDE_TOOLBAR;
 733         }
 734         if (view_prefs & POPPLER_VIEWER_PREFERENCES_HIDE_MENUBAR) {
 735                 info->ui_hints |= EV_DOCUMENT_UI_HINT_HIDE_MENUBAR;
 736         }
 737         if (view_prefs & POPPLER_VIEWER_PREFERENCES_HIDE_WINDOWUI) {
 738                 info->ui_hints |= EV_DOCUMENT_UI_HINT_HIDE_WINDOWUI;
 739         }
 740         if (view_prefs & POPPLER_VIEWER_PREFERENCES_FIT_WINDOW) {
 741                 info->ui_hints |= EV_DOCUMENT_UI_HINT_FIT_WINDOW;
 742         }
 743         if (view_prefs & POPPLER_VIEWER_PREFERENCES_CENTER_WINDOW) {
 744                 info->ui_hints |= EV_DOCUMENT_UI_HINT_CENTER_WINDOW;
 745         }
 746         if (view_prefs & POPPLER_VIEWER_PREFERENCES_DISPLAY_DOC_TITLE) {
 747                 info->ui_hints |= EV_DOCUMENT_UI_HINT_DISPLAY_DOC_TITLE;
 748         }
 749         if (view_prefs & POPPLER_VIEWER_PREFERENCES_DIRECTION_RTL) {
 750                 info->ui_hints |=  EV_DOCUMENT_UI_HINT_DIRECTION_RTL;
 751         }
 752
 753         info->permissions = 0;
 754         if (permissions & POPPLER_PERMISSIONS_OK_TO_PRINT) {
 755                 info->permissions |= EV_DOCUMENT_PERMISSIONS_OK_TO_PRINT;
 756         }
 757         if (permissions & POPPLER_PERMISSIONS_OK_TO_MODIFY) {
 758                 info->permissions |= EV_DOCUMENT_PERMISSIONS_OK_TO_MODIFY;
 759         }
 760         if (permissions & POPPLER_PERMISSIONS_OK_TO_COPY) {
 761                 info->permissions |= EV_DOCUMENT_PERMISSIONS_OK_TO_COPY;
 762         }
 763         if (permissions & POPPLER_PERMISSIONS_OK_TO_ADD_NOTES) {
 764                 info->permissions |= EV_DOCUMENT_PERMISSIONS_OK_TO_ADD_NOTES;
 765         }
 766
 767         if (ev_document_security_has_document_security (EV_DOCUMENT_SECURITY (document))) {
 768                 /* translators: this is the document security state */
 769                 info->security = g_strdup (_("Yes"));
 770         } else {
 771                 /* translators: this is the document security state */
 772                 info->security = g_strdup (_("No"));
 773         }
 774
 775         return info;
 776 }
 777
 778 static gboolean
 779 pdf_document_get_backend_info (EvDocument *document, EvDocumentBackendInfo *info)
 780 {
 781         PopplerBackend backend;
 782
 783         backend = poppler_get_backend ();
 784         switch (backend) {
 785                 case POPPLER_BACKEND_CAIRO:
 786                         info->name = "poppler/cairo";
 787                         break;
 788                 case POPPLER_BACKEND_SPLASH:
 789                         info->name = "poppler/splash";
 790                         break;
 791                 default:
 792                         info->name = "poppler/unknown";
 793                         break;
 794         }
 795
 796         info->version = poppler_get_version ();
 797
 798         return TRUE;
 799 }
 800
 801 static gboolean
 802 pdf_document_support_synctex (EvDocument *document)
 803 {
 804         return TRUE;
 805 }
 806
 807 static void
 808 pdf_document_class_init (PdfDocumentClass *klass)
 809 {
 810         GObjectClass    *g_object_class = G_OBJECT_CLASS (klass);
 811         EvDocumentClass *ev_document_class = EV_DOCUMENT_CLASS (klass);
 812
 813         g_object_class->dispose = pdf_document_dispose;
 814
 815         ev_document_class->save = pdf_document_save;
 816         ev_document_class->load = pdf_document_load;
 817         ev_document_class->get_n_pages = pdf_document_get_n_pages;
 818         ev_document_class->get_page = pdf_document_get_page;
 819         ev_document_class->get_page_size = pdf_document_get_page_size;
 820         ev_document_class->get_page_label = pdf_document_get_page_label;
 821         ev_document_class->render = pdf_document_render;
 822         ev_document_class->get_info = pdf_document_get_info;
 823         ev_document_class->get_backend_info = pdf_document_get_backend_info;
 824         ev_document_class->support_synctex = pdf_document_support_synctex;
 825 }
 826
 827 /* EvDocumentSecurity */
 828 static gboolean
 829 pdf_document_has_document_security (EvDocumentSecurity *document_security)
 830 {
 831         /* FIXME: do we really need to have this? */
 832         return FALSE;
 833 }
 834
 835 static void
 836 pdf_document_set_password (EvDocumentSecurity *document_security,
 837                            const char         *password)
 838 {
 839         PdfDocument *document = PDF_DOCUMENT (document_security);
 840
 841         if (document->password)
 842                 g_free (document->password);
 843
 844         document->password = g_strdup (password);
 845 }
 846
 847 static void
 848 pdf_document_security_iface_init (EvDocumentSecurityInterface *iface)
 849 {
 850         iface->has_document_security = pdf_document_has_document_security;
 851         iface->set_password = pdf_document_set_password;
 852 }
 853
 854 static gdouble
 855 pdf_document_fonts_get_progress (EvDocumentFonts *document_fonts)
 856 {
 857         PdfDocument *pdf_document = PDF_DOCUMENT (document_fonts);
 858         int n_pages;
 859
 860         n_pages = pdf_document_get_n_pages (EV_DOCUMENT (pdf_document));
 861
 862         return (double)pdf_document->fonts_scanned_pages / (double)n_pages;
 863 }
 864
 865 static gboolean
 866 pdf_document_fonts_scan (EvDocumentFonts *document_fonts,
 867                          int              n_pages)
 868 {
 869         PdfDocument *pdf_document = PDF_DOCUMENT (document_fonts);
 870         gboolean result;
 871
 872         g_return_val_if_fail (PDF_IS_DOCUMENT (document_fonts), FALSE);
 873
 874         if (pdf_document->font_info == NULL) {
 875                 pdf_document->font_info = poppler_font_info_new (pdf_document->document);
 876         }
 877
 878         if (pdf_document->fonts_iter) {
 879                 poppler_fonts_iter_free (pdf_document->fonts_iter);
 880         }
 881
 882         pdf_document->fonts_scanned_pages += n_pages;
 883
 884         result = poppler_font_info_scan (pdf_document->font_info, n_pages,
 885                                          &pdf_document->fonts_iter);
 886         if (!result) {
 887                 pdf_document->fonts_scanned_pages = 0;
 888                 poppler_font_info_free (pdf_document->font_info);
 889                 pdf_document->font_info = NULL;
 890         }
 891
 892         return result;
 893 }
 894
 895 static const char *
 896 font_type_to_string (PopplerFontType type)
 897 {
 898         switch (type) {
 899                 case POPPLER_FONT_TYPE_TYPE1:
 900                         return _("Type 1");
 901                 case POPPLER_FONT_TYPE_TYPE1C:
 902                         return _("Type 1C");
 903                 case POPPLER_FONT_TYPE_TYPE3:
 904                         return _("Type 3");
 905                 case POPPLER_FONT_TYPE_TRUETYPE:
 906                         return _("TrueType");
 907                 case POPPLER_FONT_TYPE_CID_TYPE0:
 908                         return _("Type 1 (CID)");
 909                 case POPPLER_FONT_TYPE_CID_TYPE0C:
 910                         return _("Type 1C (CID)");
 911                 case POPPLER_FONT_TYPE_CID_TYPE2:
 912                         return _("TrueType (CID)");
 913                 default:
 914                         return _("Unknown font type");
 915         }
 916 }
 917
 918 static void
 919 pdf_document_fonts_fill_model (EvDocumentFonts *document_fonts,
 920                                GtkTreeModel    *model)
 921 {
 922         PdfDocument *pdf_document = PDF_DOCUMENT (document_fonts);
 923         PopplerFontsIter *iter = pdf_document->fonts_iter;
 924
 925         g_return_if_fail (PDF_IS_DOCUMENT (document_fonts));
 926
 927         if (!iter)
 928                 return;
 929
 930         do {
 931                 GtkTreeIter list_iter;
 932                 const char *name;
 933                 const char *type;
 934                 const char *embedded;
 935                 char *details;
 936
 937                 name = poppler_fonts_iter_get_name (iter);
 938
 939                 if (name == NULL) {
 940                         name = _("No name");
 941                 }
 942
 943                 type = font_type_to_string (
 944                         poppler_fonts_iter_get_font_type (iter));
 945
 946                 if (poppler_fonts_iter_is_embedded (iter)) {
 947                         if (poppler_fonts_iter_is_subset (iter))
 948                                 embedded = _("Embedded subset");
 949                         else
 950                                 embedded = _("Embedded");
 951                 } else {
 952                         embedded = _("Not embedded");
 953                 }
 954
 955                 details = g_markup_printf_escaped ("%s\n%s", type, embedded);
 956
 957                 gtk_list_store_append (GTK_LIST_STORE (model), &list_iter);
 958                 gtk_list_store_set (GTK_LIST_STORE (model), &list_iter,
 959                                     EV_DOCUMENT_FONTS_COLUMN_NAME, name,
 960                                     EV_DOCUMENT_FONTS_COLUMN_DETAILS, details,
 961                                     -1);
 962
 963                 g_free (details);
 964         } while (poppler_fonts_iter_next (iter));
 965 }
 966
 967 static void
 968 pdf_document_document_fonts_iface_init (EvDocumentFontsInterface *iface)
 969 {
 970         iface->fill_model = pdf_document_fonts_fill_model;
 971         iface->scan = pdf_document_fonts_scan;
 972         iface->get_progress = pdf_document_fonts_get_progress;
 973 }
 974
 975 static gboolean
 976 pdf_document_links_has_document_links (EvDocumentLinks *document_links)
 977 {
 978         PdfDocument *pdf_document = PDF_DOCUMENT (document_links);
 979         PopplerIndexIter *iter;
 980
 981         g_return_val_if_fail (PDF_IS_DOCUMENT (document_links), FALSE);
 982
 983         iter = poppler_index_iter_new (pdf_document->document);
 984         if (iter == NULL)
 985                 return FALSE;
 986         poppler_index_iter_free (iter);
 987
 988         return TRUE;
 989 }
 990
 991 static EvLinkDest *
 992 ev_link_dest_from_dest (PdfDocument *pdf_document,
 993                         PopplerDest *dest)
 994 {
 995         EvLinkDest *ev_dest = NULL;
 996         const char *unimplemented_dest = NULL;
 997
 998         g_assert (dest != NULL);
 999
1000         switch (dest->type) {
1001                 case POPPLER_DEST_XYZ: {
1002                         PopplerPage *poppler_page;
1003                         double height;
1004
1005                         poppler_page = poppler_document_get_page (pdf_document->document,
1006                                                                   MAX (0, dest->page_num - 1));
1007                         poppler_page_get_size (poppler_page, NULL, &height);
1008                         ev_dest = ev_link_dest_new_xyz (dest->page_num - 1,
1009                                                         dest->left,
1010                                                         height - MIN (height, dest->top),
1011                                                         dest->zoom,
1012                                                         dest->change_left,
1013                                                         dest->change_top,
1014                                                         dest->change_zoom);
1015                         g_object_unref (poppler_page);
1016                 }
1017                         break;
1018                 case POPPLER_DEST_FITB:
1019                 case POPPLER_DEST_FIT:
1020                         ev_dest = ev_link_dest_new_fit (dest->page_num - 1);
1021                         break;
1022                 case POPPLER_DEST_FITBH:
1023                 case POPPLER_DEST_FITH: {
1024                         PopplerPage *poppler_page;
1025                         double height;
1026
1027                         poppler_page = poppler_document_get_page (pdf_document->document,
1028                                                                   MAX (0, dest->page_num - 1));
1029                         poppler_page_get_size (poppler_page, NULL, &height);
1030                         ev_dest = ev_link_dest_new_fith (dest->page_num - 1,
1031                                                          height - MIN (height, dest->top),
1032                                                          dest->change_top);
1033                         g_object_unref (poppler_page);
1034                 }
1035                         break;
1036                 case POPPLER_DEST_FITBV:
1037                 case POPPLER_DEST_FITV:
1038                         ev_dest = ev_link_dest_new_fitv (dest->page_num - 1,
1039                                                          dest->left,
1040                                                          dest->change_left);
1041                         break;
1042                 case POPPLER_DEST_FITR: {
1043                         PopplerPage *poppler_page;
1044                         double height;
1045
1046                         poppler_page = poppler_document_get_page (pdf_document->document,
1047                                                                   MAX (0, dest->page_num - 1));
1048                         poppler_page_get_size (poppler_page, NULL, &height);
1049                         ev_dest = ev_link_dest_new_fitr (dest->page_num - 1,
1050                                                          dest->left,
1051                                                          height - MIN (height, dest->bottom),
1052                                                          dest->right,
1053                                                          height - MIN (height, dest->top));
1054                         g_object_unref (poppler_page);
1055                 }
1056                         break;
1057                 case POPPLER_DEST_NAMED:
1058                         ev_dest = ev_link_dest_new_named (dest->named_dest);
1059                         break;
1060                 case POPPLER_DEST_UNKNOWN:
1061                         unimplemented_dest = "POPPLER_DEST_UNKNOWN";
1062                         break;
1063         }
1064
1065         if (unimplemented_dest) {
1066                 g_warning ("Unimplemented destination: %s, please post a "
1067                            "bug report in Evince bugzilla "
1068                            "(http://bugzilla.gnome.org) with a testcase.",
1069                            unimplemented_dest);
1070         }
1071
1072         if (!ev_dest)
1073                 ev_dest = ev_link_dest_new_page (dest->page_num - 1);
1074
1075         return ev_dest;
1076 }
1077
1078 static EvLink *
1079 ev_link_from_action (PdfDocument   *pdf_document,
1080                      PopplerAction *action)
1081 {
1082         EvLink       *link = NULL;
1083         EvLinkAction *ev_action = NULL;
1084         const char   *unimplemented_action = NULL;
1085
1086         switch (action->type) {
1087                 case POPPLER_ACTION_NONE:
1088                         break;
1089                 case POPPLER_ACTION_GOTO_DEST: {
1090                         EvLinkDest *dest;
1091
1092                         dest = ev_link_dest_from_dest (pdf_document, action->goto_dest.dest);
1093                         ev_action = ev_link_action_new_dest (dest);
1094                 }
1095                         break;
1096                 case POPPLER_ACTION_GOTO_REMOTE: {
1097                         EvLinkDest *dest;
1098
1099                         dest = ev_link_dest_from_dest (pdf_document, action->goto_remote.dest);
1100                         ev_action = ev_link_action_new_remote (dest,
1101                                                                action->goto_remote.file_name);
1102
1103                 }
1104                         break;
1105                 case POPPLER_ACTION_LAUNCH:
1106                         ev_action = ev_link_action_new_launch (action->launch.file_name,
1107                                                                action->launch.params);
1108                         break;
1109                 case POPPLER_ACTION_URI:
1110                         ev_action = ev_link_action_new_external_uri (action->uri.uri);
1111                         break;
1112                 case POPPLER_ACTION_NAMED:
1113                         ev_action = ev_link_action_new_named (action->named.named_dest);
1114                         break;
1115                 case POPPLER_ACTION_MOVIE:
1116                         unimplemented_action = "POPPLER_ACTION_MOVIE";
1117                         break;
1118 #if POPPLER_CHECK_VERSION (0, 13, 2)
1119                 case POPPLER_ACTION_RENDITION:
1120                         unimplemented_action = "POPPLER_ACTION_RENDITION";
1121                         break;
1122                 case POPPLER_ACTION_OCG_STATE:
1123                         unimplemented_action = "POPPLER_ACTION_OCG_STATE";
1124                         break;
1125 #endif
1126                 case POPPLER_ACTION_UNKNOWN:
1127                         unimplemented_action = "POPPLER_ACTION_UNKNOWN";
1128         }
1129
1130         if (unimplemented_action) {
1131                 g_warning ("Unimplemented action: %s, please post a bug report "
1132                            "in Evince bugzilla (http://bugzilla.gnome.org) "
1133                            "with a testcase.", unimplemented_action);
1134         }
1135
1136         link = ev_link_new (action->any.title, ev_action);
1137
1138         return link;
1139 }
1140
1141 static void
1142 build_tree (PdfDocument      *pdf_document,
1143             GtkTreeModel     *model,
1144             GtkTreeIter      *parent,
1145             PopplerIndexIter *iter)
1146 {
1147
1148         do {
1149                 GtkTreeIter tree_iter;
1150                 PopplerIndexIter *child;
1151                 PopplerAction *action;
1152                 EvLink *link = NULL;
1153                 gboolean expand;
1154                 char *title_markup;
1155
1156                 action = poppler_index_iter_get_action (iter);
1157                 expand = poppler_index_iter_is_open (iter);
1158
1159                 if (!action)
1160                         continue;
1161
1162                 switch (action->type) {
1163                         case POPPLER_ACTION_GOTO_DEST: {
1164                                 /* For bookmarks, solve named destinations */
1165                                 if (action->goto_dest.dest->type == POPPLER_DEST_NAMED) {
1166                                         PopplerDest *dest;
1167                                         EvLinkDest *ev_dest = NULL;
1168                                         EvLinkAction *ev_action;
1169
1170                                         dest = poppler_document_find_dest (pdf_document->document,
1171                                                                            action->goto_dest.dest->named_dest);
1172                                         if (!dest) {
1173                                                 link = ev_link_from_action (pdf_document, action);
1174                                                 break;
1175                                         }
1176
1177                                         ev_dest = ev_link_dest_from_dest (pdf_document, dest);
1178                                         poppler_dest_free (dest);
1179
1180                                         ev_action = ev_link_action_new_dest (ev_dest);
1181                                         link = ev_link_new (action->any.title, ev_action);
1182                                 } else {
1183                                         link = ev_link_from_action (pdf_document, action);
1184                                 }
1185                         }
1186                                 break;
1187                         default:
1188                                 link = ev_link_from_action (pdf_document, action);
1189                                 break;
1190                 }
1191
1192                 if (!link || strlen (ev_link_get_title (link)) <= 0) {
1193                         poppler_action_free (action);
1194                         if (link)
1195                                 g_object_unref (link);
1196
1197                         continue;
1198                 }
1199
1200                 gtk_tree_store_append (GTK_TREE_STORE (model), &tree_iter, parent);
1201                 title_markup = g_markup_escape_text (ev_link_get_title (link), -1);
1202
1203                 gtk_tree_store_set (GTK_TREE_STORE (model), &tree_iter,
1204                                     EV_DOCUMENT_LINKS_COLUMN_MARKUP, title_markup,
1205                                     EV_DOCUMENT_LINKS_COLUMN_LINK, link,
1206                                     EV_DOCUMENT_LINKS_COLUMN_EXPAND, expand,
1207                                     -1);
1208
1209                 g_free (title_markup);
1210                 g_object_unref (link);
1211
1212                 child = poppler_index_iter_get_child (iter);
1213                 if (child)
1214                         build_tree (pdf_document, model, &tree_iter, child);
1215                 poppler_index_iter_free (child);
1216                 poppler_action_free (action);
1217
1218         } while (poppler_index_iter_next (iter));
1219 }
1220
1221 static GtkTreeModel *
1222 pdf_document_links_get_links_model (EvDocumentLinks *document_links)
1223 {
1224         PdfDocument *pdf_document = PDF_DOCUMENT (document_links);
1225         GtkTreeModel *model = NULL;
1226         PopplerIndexIter *iter;
1227
1228         g_return_val_if_fail (PDF_IS_DOCUMENT (document_links), NULL);
1229
1230         iter = poppler_index_iter_new (pdf_document->document);
1231         /* Create the model if we have items*/
1232         if (iter != NULL) {
1233                 model = (GtkTreeModel *) gtk_tree_store_new (EV_DOCUMENT_LINKS_COLUMN_NUM_COLUMNS,
1234                                                              G_TYPE_STRING,
1235                                                              G_TYPE_OBJECT,
1236                                                              G_TYPE_BOOLEAN,
1237                                                              G_TYPE_STRING);
1238                 build_tree (pdf_document, model, NULL, iter);
1239                 poppler_index_iter_free (iter);
1240         }
1241
1242         return model;
1243 }
1244
1245 static GList *
1246 pdf_document_links_get_links (EvDocumentLinks *document_links,
1247                               EvPage          *page)
1248 {
1249         PdfDocument *pdf_document;
1250         PopplerPage *poppler_page;
1251         GList *retval = NULL;
1252         GList *mapping_list;
1253         GList *list;
1254         double height;
1255
1256         pdf_document = PDF_DOCUMENT (document_links);
1257         poppler_page = POPPLER_PAGE (page->backend_page);
1258         mapping_list = poppler_page_get_link_mapping (poppler_page);
1259         poppler_page_get_size (poppler_page, NULL, &height);
1260
1261         for (list = mapping_list; list; list = list->next) {
1262                 PopplerLinkMapping *link_mapping;
1263                 EvMapping *ev_link_mapping;
1264
1265                 link_mapping = (PopplerLinkMapping *)list->data;
1266                 ev_link_mapping = g_new (EvMapping, 1);
1267                 ev_link_mapping->data = ev_link_from_action (pdf_document,
1268                                                              link_mapping->action);
1269                 ev_link_mapping->area.x1 = link_mapping->area.x1;
1270                 ev_link_mapping->area.x2 = link_mapping->area.x2;
1271                 /* Invert this for X-style coordinates */
1272                 ev_link_mapping->area.y1 = height - link_mapping->area.y2;
1273                 ev_link_mapping->area.y2 = height - link_mapping->area.y1;
1274
1275                 retval = g_list_prepend (retval, ev_link_mapping);
1276         }
1277
1278         poppler_page_free_link_mapping (mapping_list);
1279
1280         return g_list_reverse (retval);
1281 }
1282
1283 static EvLinkDest *
1284 pdf_document_links_find_link_dest (EvDocumentLinks  *document_links,
1285                                    const gchar      *link_name)
1286 {
1287         PdfDocument *pdf_document;
1288         PopplerDest *dest;
1289         EvLinkDest *ev_dest = NULL;
1290
1291         pdf_document = PDF_DOCUMENT (document_links);
1292         dest = poppler_document_find_dest (pdf_document->document,
1293                                            link_name);
1294         if (dest) {
1295                 ev_dest = ev_link_dest_from_dest (pdf_document, dest);
1296                 poppler_dest_free (dest);
1297         }
1298
1299         return ev_dest;
1300 }
1301
1302 static void
1303 pdf_document_document_links_iface_init (EvDocumentLinksInterface *iface)
1304 {
1305         iface->has_document_links = pdf_document_links_has_document_links;
1306         iface->get_links_model = pdf_document_links_get_links_model;
1307         iface->get_links = pdf_document_links_get_links;
1308         iface->find_link_dest = pdf_document_links_find_link_dest;
1309 }
1310
1311 static GList *
1312 pdf_document_images_get_image_mapping (EvDocumentImages *document_images,
1313                                        EvPage           *page)
1314 {
1315         GList *retval = NULL;
1316         PdfDocument *pdf_document;
1317         PopplerPage *poppler_page;
1318         GList *mapping_list;
1319         GList *list;
1320
1321         pdf_document = PDF_DOCUMENT (document_images);
1322         poppler_page = POPPLER_PAGE (page->backend_page);
1323         mapping_list = poppler_page_get_image_mapping (poppler_page);
1324
1325         for (list = mapping_list; list; list = list->next) {
1326                 PopplerImageMapping *image_mapping;
1327                 EvMapping *ev_image_mapping;
1328
1329                 image_mapping = (PopplerImageMapping *)list->data;
1330
1331                 ev_image_mapping = g_new (EvMapping, 1);
1332
1333                 ev_image_mapping->data = ev_image_new (page->index, image_mapping->image_id);
1334                 ev_image_mapping->area.x1 = image_mapping->area.x1;
1335                 ev_image_mapping->area.y1 = image_mapping->area.y1;
1336                 ev_image_mapping->area.x2 = image_mapping->area.x2;
1337                 ev_image_mapping->area.y2 = image_mapping->area.y2;
1338
1339                 retval = g_list_prepend (retval, ev_image_mapping);
1340         }
1341
1342         poppler_page_free_image_mapping (mapping_list);
1343
1344         return g_list_reverse (retval);
1345 }
1346
1347 GdkPixbuf *
1348 pdf_document_images_get_image (EvDocumentImages *document_images,
1349                                EvImage          *image)
1350 {
1351         GdkPixbuf       *retval = NULL;
1352         PdfDocument     *pdf_document;
1353         PopplerPage     *poppler_page;
1354         cairo_surface_t *surface;
1355
1356         pdf_document = PDF_DOCUMENT (document_images);
1357         poppler_page = poppler_document_get_page (pdf_document->document,
1358                                                   ev_image_get_page (image));
1359
1360         surface = poppler_page_get_image (poppler_page, ev_image_get_id (image));
1361         if (surface) {
1362                 retval = ev_document_misc_pixbuf_from_surface (surface);
1363                 cairo_surface_destroy (surface);
1364         }
1365
1366         g_object_unref (poppler_page);
1367
1368         return retval;
1369 }
1370
1371 static void
1372 pdf_document_document_images_iface_init (EvDocumentImagesInterface *iface)
1373 {
1374         iface->get_image_mapping = pdf_document_images_get_image_mapping;
1375         iface->get_image = pdf_document_images_get_image;
1376 }
1377
1378 static GdkPixbuf *
1379 make_thumbnail_for_page (PopplerPage     *poppler_page,
1380                          EvRenderContext *rc,
1381                          gint             width,
1382                          gint             height)
1383 {
1384         GdkPixbuf *pixbuf;
1385
1386 #ifdef POPPLER_WITH_GDK
1387         pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, FALSE, 8,
1388                                  width, height);
1389         gdk_pixbuf_fill (pixbuf, 0xffffffff);
1390
1391         ev_document_fc_mutex_lock ();
1392         poppler_page_render_to_pixbuf (poppler_page, 0, 0,
1393                                        width, height,
1394                                        rc->scale, rc->rotation, pixbuf);
1395         ev_document_fc_mutex_unlock ();
1396 #else
1397         cairo_surface_t *surface;
1398
1399         ev_document_fc_mutex_lock ();
1400         surface = pdf_page_render (poppler_page, width, height, rc);
1401         ev_document_fc_mutex_unlock ();
1402
1403         pixbuf = ev_document_misc_pixbuf_from_surface (surface);
1404         cairo_surface_destroy (surface);
1405 #endif /* POPPLER_WITH_GDK */
1406
1407         return pixbuf;
1408 }
1409
1410 static GdkPixbuf *
1411 pdf_document_thumbnails_get_thumbnail (EvDocumentThumbnails *document_thumbnails,
1412                                        EvRenderContext      *rc,
1413                                        gboolean              border)
1414 {
1415         PdfDocument *pdf_document = PDF_DOCUMENT (document_thumbnails);
1416         PopplerPage *poppler_page;
1417         GdkPixbuf *pixbuf = NULL;
1418         GdkPixbuf *border_pixbuf;
1419         gint width, height;
1420
1421         poppler_page = POPPLER_PAGE (rc->page->backend_page);
1422
1423         pdf_document_thumbnails_get_dimensions (EV_DOCUMENT_THUMBNAILS (pdf_document),
1424                                                 rc, &width, &height);
1425
1426 #ifdef POPPLER_WITH_GDK
1427         pixbuf = poppler_page_get_thumbnail_pixbuf (poppler_page);
1428 #else
1429         cairo_surface_t *surface;
1430
1431         surface = poppler_page_get_thumbnail (poppler_page);
1432         if (surface) {
1433                 pixbuf = ev_document_misc_pixbuf_from_surface (surface);
1434                 cairo_surface_destroy (surface);
1435         }
1436 #endif /* POPPLER_WITH_GDK */
1437
1438         if (pixbuf != NULL) {
1439                 int thumb_width = (rc->rotation == 90 || rc->rotation == 270) ?
1440                         gdk_pixbuf_get_height (pixbuf) :
1441                         gdk_pixbuf_get_width (pixbuf);
1442
1443                 if (thumb_width == width) {
1444                         GdkPixbuf *rotated_pixbuf;
1445
1446                         rotated_pixbuf = gdk_pixbuf_rotate_simple (pixbuf,
1447                                                                    (GdkPixbufRotation) (360 - rc->rotation));
1448                         g_object_unref (pixbuf);
1449                         pixbuf = rotated_pixbuf;
1450                 } else {
1451                         /* The provided thumbnail has a different size */
1452                         g_object_unref (pixbuf);
1453                         pixbuf = make_thumbnail_for_page (poppler_page, rc, width, height);
1454                 }
1455         } else {
1456                 /* There is no provided thumbnail. We need to make one. */
1457                 pixbuf = make_thumbnail_for_page (poppler_page, rc, width, height);
1458         }
1459
1460         if (border && pixbuf) {
1461                 border_pixbuf = ev_document_misc_get_thumbnail_frame (-1, -1, pixbuf);
1462                 g_object_unref (pixbuf);
1463                 pixbuf = border_pixbuf;
1464         }
1465
1466         return pixbuf;
1467 }
1468
1469 static void
1470 pdf_document_thumbnails_get_dimensions (EvDocumentThumbnails *document_thumbnails,
1471                                         EvRenderContext      *rc,
1472                                         gint                 *width,
1473                                         gint                 *height)
1474 {
1475         double page_width, page_height;
1476
1477         poppler_page_get_size (POPPLER_PAGE (rc->page->backend_page),
1478                                &page_width, &page_height);
1479
1480         *width = MAX ((gint)(page_width * rc->scale + 0.5), 1);
1481         *height = MAX ((gint)(page_height * rc->scale + 0.5), 1);
1482
1483         if (rc->rotation == 90 || rc->rotation == 270) {
1484                 gint  temp;
1485
1486                 temp = *width;
1487                 *width = *height;
1488                 *height = temp;
1489         }
1490 }
1491
1492 static void
1493 pdf_document_document_thumbnails_iface_init (EvDocumentThumbnailsInterface *iface)
1494 {
1495         iface->get_thumbnail = pdf_document_thumbnails_get_thumbnail;
1496         iface->get_dimensions = pdf_document_thumbnails_get_dimensions;
1497 }
1498
1499
1500 static GList *
1501 pdf_document_find_find_text (EvDocumentFind *document_find,
1502                              EvPage         *page,
1503                              const gchar    *text,
1504                              gboolean        case_sensitive)
1505 {
1506         GList *matches, *l;
1507         PopplerPage *poppler_page;
1508         gdouble height;
1509         GList *retval = NULL;
1510
1511         g_return_val_if_fail (POPPLER_IS_PAGE (page->backend_page), NULL);
1512         g_return_val_if_fail (text != NULL, NULL);
1513
1514         poppler_page = POPPLER_PAGE (page->backend_page);
1515
1516         matches = poppler_page_find_text (poppler_page, text);
1517         if (!matches)
1518                 return NULL;
1519
1520         poppler_page_get_size (poppler_page, NULL, &height);
1521         for (l = matches; l && l->data; l = g_list_next (l)) {
1522                 PopplerRectangle *rect = (PopplerRectangle *)l->data;
1523                 EvRectangle      *ev_rect;
1524
1525                 ev_rect = ev_rectangle_new ();
1526                 ev_rect->x1 = rect->x1;
1527                 ev_rect->x2 = rect->x2;
1528                 /* Invert this for X-style coordinates */
1529                 ev_rect->y1 = height - rect->y2;
1530                 ev_rect->y2 = height - rect->y1;
1531
1532                 retval = g_list_prepend (retval, ev_rect);
1533         }
1534
1535         g_list_foreach (matches, (GFunc)poppler_rectangle_free, NULL);
1536         g_list_free (matches);
1537
1538         return g_list_reverse (retval);
1539 }
1540
1541 static void
1542 pdf_document_find_iface_init (EvDocumentFindInterface *iface)
1543 {
1544         iface->find_text = pdf_document_find_find_text;
1545 }
1546
1547 static void
1548 pdf_print_context_free (PdfPrintContext *ctx)
1549 {
1550         if (!ctx)
1551                 return;
1552
1553 #ifdef HAVE_CAIRO_PRINT
1554         if (ctx->cr) {
1555                 cairo_destroy (ctx->cr);
1556                 ctx->cr = NULL;
1557         }
1558 #else
1559         if (ctx->ps_file) {
1560                 poppler_ps_file_free (ctx->ps_file);
1561                 ctx->ps_file = NULL;
1562         }
1563 #endif
1564         g_free (ctx);
1565 }
1566
1567 static void
1568 pdf_document_file_exporter_begin (EvFileExporter        *exporter,
1569                                   EvFileExporterContext *fc)
1570 {
1571         PdfDocument *pdf_document = PDF_DOCUMENT (exporter);
1572         PdfPrintContext *ctx;
1573 #ifdef HAVE_CAIRO_PRINT
1574         gdouble width, height;
1575         cairo_surface_t *surface = NULL;
1576 #endif
1577
1578         if (pdf_document->print_ctx)
1579                 pdf_print_context_free (pdf_document->print_ctx);
1580         pdf_document->print_ctx = g_new0 (PdfPrintContext, 1);
1581         ctx = pdf_document->print_ctx;
1582         ctx->format = fc->format;
1583
1584 #ifdef HAVE_CAIRO_PRINT
1585         ctx->pages_per_sheet = CLAMP (fc->pages_per_sheet, 1, 16);
1586
1587         ctx->paper_width = fc->paper_width;
1588         ctx->paper_height = fc->paper_height;
1589
1590         switch (fc->pages_per_sheet) {
1591                 default:
1592                 case 1:
1593                         ctx->pages_x = 1;
1594                         ctx->pages_y = 1;
1595                         break;
1596                 case 2:
1597                         ctx->pages_x = 1;
1598                         ctx->pages_y = 2;
1599                         break;
1600                 case 4:
1601                         ctx->pages_x = 2;
1602                         ctx->pages_y = 2;
1603                         break;
1604                 case 6:
1605                         ctx->pages_x = 2;
1606                         ctx->pages_y = 3;
1607                         break;
1608                 case 9:
1609                         ctx->pages_x = 3;
1610                         ctx->pages_y = 3;
1611                         break;
1612                 case 16:
1613                         ctx->pages_x = 4;
1614                         ctx->pages_y = 4;
1615                         break;
1616         }
1617
1618         ctx->pages_printed = 0;
1619
1620         switch (fc->format) {
1621                 case EV_FILE_FORMAT_PS:
1622 #ifdef HAVE_CAIRO_PS
1623                         surface = cairo_ps_surface_create (fc->filename, fc->paper_width, fc->paper_height);
1624 #endif
1625                         break;
1626                 case EV_FILE_FORMAT_PDF:
1627 #ifdef HAVE_CAIRO_PDF
1628                         surface = cairo_pdf_surface_create (fc->filename, fc->paper_width, fc->paper_height);
1629 #endif
1630                         break;
1631                 default:
1632                         g_assert_not_reached ();
1633         }
1634
1635         ctx->cr = cairo_create (surface);
1636         cairo_surface_destroy (surface);
1637
1638 #else /* HAVE_CAIRO_PRINT */
1639         if (ctx->format == EV_FILE_FORMAT_PS) {
1640                 ctx->ps_file = poppler_ps_file_new (pdf_document->document,
1641                                                     fc->filename, fc->first_page,
1642                                                     fc->last_page - fc->first_page + 1);
1643                 poppler_ps_file_set_paper_size (ctx->ps_file, fc->paper_width, fc->paper_height);
1644                 poppler_ps_file_set_duplex (ctx->ps_file, fc->duplex);
1645         }
1646 #endif /* HAVE_CAIRO_PRINT */
1647 }
1648
1649 static void
1650 pdf_document_file_exporter_begin_page (EvFileExporter *exporter)
1651 {
1652         PdfDocument *pdf_document = PDF_DOCUMENT (exporter);
1653         PdfPrintContext *ctx = pdf_document->print_ctx;
1654
1655         g_return_if_fail (pdf_document->print_ctx != NULL);
1656
1657         ctx->pages_printed = 0;
1658
1659 #ifdef HAVE_CAIRO_PRINT
1660         if (ctx->paper_width > ctx->paper_height) {
1661                 if (ctx->format == EV_FILE_FORMAT_PS) {
1662                         cairo_ps_surface_set_size (cairo_get_target (ctx->cr),
1663                                                    ctx->paper_height,
1664                                                    ctx->paper_width);
1665                 } else if (ctx->format == EV_FILE_FORMAT_PDF) {
1666                         cairo_pdf_surface_set_size (cairo_get_target (ctx->cr),
1667                                                     ctx->paper_height,
1668                                                     ctx->paper_width);
1669                 }
1670         }
1671 #endif /* HAVE_CAIRO_PRINT */
1672 }
1673
1674 static void
1675 pdf_document_file_exporter_do_page (EvFileExporter  *exporter,
1676                                     EvRenderContext *rc)
1677 {
1678         PdfDocument *pdf_document = PDF_DOCUMENT (exporter);
1679         PdfPrintContext *ctx = pdf_document->print_ctx;
1680         PopplerPage *poppler_page;
1681 #ifdef HAVE_CAIRO_PRINT
1682         gdouble  page_width, page_height;
1683         gint     x, y;
1684         gboolean rotate;
1685         gdouble  width, height;
1686         gdouble  pwidth, pheight;
1687         gdouble  xscale, yscale;
1688 #endif
1689
1690         g_return_if_fail (pdf_document->print_ctx != NULL);
1691
1692         poppler_page = POPPLER_PAGE (rc->page->backend_page);
1693
1694 #ifdef HAVE_CAIRO_PRINT
1695         x = (ctx->pages_printed % ctx->pages_per_sheet) % ctx->pages_x;
1696         y = (ctx->pages_printed % ctx->pages_per_sheet) / ctx->pages_x;
1697         poppler_page_get_size (poppler_page, &page_width, &page_height);
1698
1699         if (page_width > page_height && page_width > ctx->paper_width) {
1700                 rotate = TRUE;
1701         } else {
1702                 rotate = FALSE;
1703         }
1704
1705         /* Use always portrait mode and rotate when necessary */
1706         if (ctx->paper_width > ctx->paper_height) {
1707                 width = ctx->paper_height;
1708                 height = ctx->paper_width;
1709                 rotate = !rotate;
1710         } else {
1711                 width = ctx->paper_width;
1712                 height = ctx->paper_height;
1713         }
1714
1715         if (ctx->pages_per_sheet == 2 || ctx->pages_per_sheet == 6) {
1716                 rotate = !rotate;
1717         }
1718
1719         if (rotate) {
1720                 gint tmp1;
1721                 gdouble tmp2;
1722
1723                 tmp1 = x;
1724                 x = y;
1725                 y = tmp1;
1726
1727                 tmp2 = page_width;
1728                 page_width = page_height;
1729                 page_height = tmp2;
1730         }
1731
1732         pwidth = width / ctx->pages_x;
1733         pheight = height / ctx->pages_y;
1734
1735         if ((page_width > pwidth || page_height > pheight) ||
1736             (page_width < pwidth && page_height < pheight)) {
1737                 xscale = pwidth / page_width;
1738                 yscale = pheight / page_height;
1739
1740                 if (yscale < xscale) {
1741                         xscale = yscale;
1742                 } else {
1743                         yscale = xscale;
1744                 }
1745
1746         } else {
1747                 xscale = yscale = 1;
1748         }
1749
1750         /* TODO: center */
1751
1752         cairo_save (ctx->cr);
1753         if (rotate) {
1754                 cairo_matrix_t matrix;
1755
1756                 cairo_translate (ctx->cr, (2 * y + 1) * pwidth, 0);
1757                 cairo_matrix_init (&matrix,
1758                                    0,  1,
1759                                    -1,  0,
1760                                    0,  0);
1761                 cairo_transform (ctx->cr, &matrix);
1762         }
1763
1764         cairo_translate (ctx->cr,
1765                          x * (rotate ? pheight : pwidth),
1766                          y * (rotate ? pwidth : pheight));
1767         cairo_scale (ctx->cr, xscale, yscale);
1768
1769         poppler_page_render_for_printing (poppler_page, ctx->cr);
1770
1771         ctx->pages_printed++;
1772
1773         cairo_restore (ctx->cr);
1774 #else /* HAVE_CAIRO_PRINT */
1775         if (ctx->format == EV_FILE_FORMAT_PS)
1776                 poppler_page_render_to_ps (poppler_page, ctx->ps_file);
1777 #endif /* HAVE_CAIRO_PRINT */
1778 }
1779
1780 static void
1781 pdf_document_file_exporter_end_page (EvFileExporter *exporter)
1782 {
1783         PdfDocument *pdf_document = PDF_DOCUMENT (exporter);
1784         PdfPrintContext *ctx = pdf_document->print_ctx;
1785
1786         g_return_if_fail (pdf_document->print_ctx != NULL);
1787
1788 #ifdef HAVE_CAIRO_PRINT
1789         cairo_show_page (ctx->cr);
1790 #endif
1791 }
1792
1793 static void
1794 pdf_document_file_exporter_end (EvFileExporter *exporter)
1795 {
1796         PdfDocument *pdf_document = PDF_DOCUMENT (exporter);
1797
1798         pdf_print_context_free (pdf_document->print_ctx);
1799         pdf_document->print_ctx = NULL;
1800 }
1801
1802 static EvFileExporterCapabilities
1803 pdf_document_file_exporter_get_capabilities (EvFileExporter *exporter)
1804 {
1805         return  (EvFileExporterCapabilities) (
1806                 EV_FILE_EXPORTER_CAN_PAGE_SET |
1807                 EV_FILE_EXPORTER_CAN_COPIES |
1808                 EV_FILE_EXPORTER_CAN_COLLATE |
1809                 EV_FILE_EXPORTER_CAN_REVERSE |
1810                 EV_FILE_EXPORTER_CAN_SCALE |
1811 #ifdef HAVE_CAIRO_PRINT
1812                 EV_FILE_EXPORTER_CAN_NUMBER_UP |
1813 #endif
1814
1815 #ifdef HAVE_CAIRO_PDF
1816                 EV_FILE_EXPORTER_CAN_GENERATE_PDF |
1817 #endif
1818                 EV_FILE_EXPORTER_CAN_GENERATE_PS);
1819 }
1820
1821 static void
1822 pdf_document_file_exporter_iface_init (EvFileExporterInterface *iface)
1823 {
1824         iface->begin = pdf_document_file_exporter_begin;
1825         iface->begin_page = pdf_document_file_exporter_begin_page;
1826         iface->do_page = pdf_document_file_exporter_do_page;
1827         iface->end_page = pdf_document_file_exporter_end_page;
1828         iface->end = pdf_document_file_exporter_end;
1829         iface->get_capabilities = pdf_document_file_exporter_get_capabilities;
1830 }
1831
1832 /* EvDocumentPrint */
1833 static void
1834 pdf_document_print_print_page (EvDocumentPrint *document,
1835                                EvPage          *page,
1836                                cairo_t         *cr)
1837 {
1838         PdfDocument *pdf_document = PDF_DOCUMENT (document);
1839
1840         poppler_page_render_for_printing (POPPLER_PAGE (page->backend_page), cr);
1841 }
1842
1843 static void
1844 pdf_document_document_print_iface_init (EvDocumentPrintInterface *iface)
1845 {
1846         iface->print_page = pdf_document_print_print_page;
1847 }
1848
1849 static void
1850 pdf_selection_render_selection (EvSelection      *selection,
1851                                 EvRenderContext  *rc,
1852                                 cairo_surface_t **surface,
1853                                 EvRectangle      *points,
1854                                 EvRectangle      *old_points,
1855                                 EvSelectionStyle  style,
1856                                 GdkColor         *text,
1857                                 GdkColor         *base)
1858 {
1859         PopplerPage *poppler_page;
1860         cairo_t *cr;
1861         PopplerColor text_color, base_color;
1862         double width_points, height_points;
1863         gint width, height;
1864
1865         poppler_page = POPPLER_PAGE (rc->page->backend_page);
1866
1867         poppler_page_get_size (poppler_page,
1868                                &width_points, &height_points);
1869         width = (int) ((width_points * rc->scale) + 0.5);
1870         height = (int) ((height_points * rc->scale) + 0.5);
1871
1872         text_color.red = text->red;
1873         text_color.green = text->green;
1874         text_color.blue = text->blue;
1875
1876         base_color.red = base->red;
1877         base_color.green = base->green;
1878         base_color.blue = base->blue;
1879
1880         if (*surface == NULL) {
1881                 *surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
1882                                                        width, height);
1883
1884         }
1885
1886         cr = cairo_create (*surface);
1887         cairo_scale (cr, rc->scale, rc->scale);
1888         cairo_surface_set_device_offset (*surface, 0, 0);
1889         memset (cairo_image_surface_get_data (*surface), 0x00,
1890                 cairo_image_surface_get_height (*surface) *
1891                 cairo_image_surface_get_stride (*surface));
1892         poppler_page_render_selection (poppler_page,
1893                                        cr,
1894                                        (PopplerRectangle *)points,
1895                                        (PopplerRectangle *)old_points,
1896                                        (PopplerSelectionStyle)style,
1897                                        &text_color,
1898                                        &base_color);
1899         cairo_destroy (cr);
1900 }
1901
1902 static gchar *
1903 pdf_selection_get_selected_text (EvSelection     *selection,
1904                                  EvPage          *page,
1905                                  EvSelectionStyle style,
1906                                  EvRectangle     *points)
1907 {
1908         PopplerPage *poppler_page;
1909         PopplerRectangle r;
1910         double height;
1911         char *retval;
1912
1913         poppler_page = POPPLER_PAGE (page->backend_page);
1914
1915         poppler_page_get_size (poppler_page, NULL, &height);
1916         r.x1 = points->x1;
1917         r.y1 = height - points->y2;
1918         r.x2 = points->x2;
1919         r.y2 = height - points->y1;
1920
1921         retval = poppler_page_get_text (poppler_page,
1922                                         (PopplerSelectionStyle)style,
1923                                         &r);
1924
1925         return retval;
1926 }
1927
1928 static GdkRegion *
1929 create_gdk_region_from_poppler_region (GList *region)
1930 {
1931         GList *l;
1932         GdkRegion *retval;
1933
1934         retval = gdk_region_new ();
1935
1936         for (l = region; l; l = g_list_next (l)) {
1937                 PopplerRectangle *rectangle;
1938                 GdkRectangle      rect;
1939
1940                 rectangle = (PopplerRectangle *)l->data;
1941
1942                 rect.x = (gint) rectangle->x1;
1943                 rect.y = (gint) rectangle->y1;
1944                 rect.width  = (gint) (rectangle->x2 - rectangle->x1);
1945                 rect.height = (gint) (rectangle->y2 - rectangle->y1);
1946                 gdk_region_union_with_rect (retval, &rect);
1947
1948                 poppler_rectangle_free (rectangle);
1949         }
1950
1951         return retval;
1952 }
1953
1954 static GdkRegion *
1955 pdf_selection_get_selection_region (EvSelection     *selection,
1956                                     EvRenderContext *rc,
1957                                     EvSelectionStyle style,
1958                                     EvRectangle     *points)
1959 {
1960         PopplerPage *poppler_page;
1961         GdkRegion   *retval;
1962         GList       *region;
1963
1964         poppler_page = POPPLER_PAGE (rc->page->backend_page);
1965
1966         region = poppler_page_get_selection_region (poppler_page,
1967                                                     rc->scale,
1968                                                     (PopplerSelectionStyle)style,
1969                                                     (PopplerRectangle *) points);
1970         retval = create_gdk_region_from_poppler_region (region);
1971         g_list_free (region);
1972
1973         return retval;
1974 }
1975
1976 static void
1977 pdf_selection_iface_init (EvSelectionInterface *iface)
1978 {
1979         iface->render_selection = pdf_selection_render_selection;
1980         iface->get_selected_text = pdf_selection_get_selected_text;
1981         iface->get_selection_region = pdf_selection_get_selection_region;
1982 }
1983
1984
1985 /* EvDocumentText */
1986 static GdkRegion *
1987 pdf_document_text_get_text_mapping (EvDocumentText *document_text,
1988                                     EvPage         *page)
1989 {
1990         PopplerPage *poppler_page;
1991         PopplerRectangle points;
1992         GList *region;
1993         GdkRegion *retval;
1994
1995         g_return_val_if_fail (POPPLER_IS_PAGE (page->backend_page), NULL);
1996
1997         poppler_page = POPPLER_PAGE (page->backend_page);
1998
1999         points.x1 = 0.0;
2000         points.y1 = 0.0;
2001         poppler_page_get_size (poppler_page, &(points.x2), &(points.y2));
2002
2003         region = poppler_page_get_selection_region (poppler_page, 1.0,
2004                                                     POPPLER_SELECTION_GLYPH,
2005                                                     &points);
2006         retval = create_gdk_region_from_poppler_region (region);
2007         g_list_free (region);
2008
2009         return retval;
2010 }
2011
2012 static gchar *
2013 pdf_document_text_get_text (EvDocumentText  *selection,
2014                             EvPage          *page)
2015 {
2016         PopplerPage *poppler_page;
2017         PopplerRectangle r;
2018
2019         g_return_val_if_fail (POPPLER_IS_PAGE (page->backend_page), NULL);
2020
2021         poppler_page = POPPLER_PAGE (page->backend_page);
2022
2023         r.x1 = 0;
2024         r.y1 = 0;
2025         poppler_page_get_size (poppler_page, &(r.x2), &(r.y2));
2026
2027         return poppler_page_get_text (poppler_page,
2028                                       POPPLER_SELECTION_WORD,
2029                                       &r);
2030 }
2031
2032 static gboolean
2033 pdf_document_text_get_text_layout (EvDocumentText  *selection,
2034                                    EvPage          *page,
2035                                    EvRectangle    **areas,
2036                                    guint           *n_areas)
2037 {
2038         PopplerPage *poppler_page;
2039
2040         g_return_val_if_fail (POPPLER_IS_PAGE (page->backend_page), NULL);
2041
2042         poppler_page = POPPLER_PAGE (page->backend_page);
2043
2044         return poppler_page_get_text_layout (poppler_page, (PopplerRectangle **)areas, n_areas);
2045 }
2046
2047 static void
2048 pdf_document_text_iface_init (EvDocumentTextInterface *iface)
2049 {
2050         iface->get_text_mapping = pdf_document_text_get_text_mapping;
2051         iface->get_text = pdf_document_text_get_text;
2052 #ifdef HAVE_POPPLER_PAGE_GET_TEXT_LAYOUT
2053         iface->get_text_layout = pdf_document_text_get_text_layout;
2054 #endif
2055 }
2056
2057 /* Page Transitions */
2058 static gdouble
2059 pdf_document_get_page_duration (EvDocumentTransition *trans,
2060                                 gint                  page)
2061 {
2062         PdfDocument *pdf_document;
2063         PopplerPage *poppler_page;
2064         gdouble      duration = -1;
2065
2066         pdf_document = PDF_DOCUMENT (trans);
2067         poppler_page = poppler_document_get_page (pdf_document->document, page);
2068         if (!poppler_page)
2069                 return -1;
2070
2071         duration = poppler_page_get_duration (poppler_page);
2072         g_object_unref (poppler_page);
2073
2074         return duration;
2075 }
2076
2077 static EvTransitionEffect *
2078 pdf_document_get_effect (EvDocumentTransition *trans,
2079                          gint                  page)
2080 {
2081         PdfDocument            *pdf_document;
2082         PopplerPage            *poppler_page;
2083         PopplerPageTransition  *page_transition;
2084         EvTransitionEffect     *effect;
2085
2086         pdf_document = PDF_DOCUMENT (trans);
2087         poppler_page = poppler_document_get_page (pdf_document->document, page);
2088
2089         if (!poppler_page)
2090                 return NULL;
2091
2092         page_transition = poppler_page_get_transition (poppler_page);
2093
2094         if (!page_transition) {
2095                 g_object_unref (poppler_page);
2096                 return NULL;
2097         }
2098
2099         /* enums in PopplerPageTransition match the EvTransitionEffect ones */
2100         effect = ev_transition_effect_new ((EvTransitionEffectType) page_transition->type,
2101                                            "alignment", page_transition->alignment,
2102                                            "direction", page_transition->direction,
2103                                            "duration", page_transition->duration,
2104                                            "angle", page_transition->angle,
2105                                            "scale", page_transition->scale,
2106                                            "rectangular", page_transition->rectangular,
2107                                            NULL);
2108
2109         poppler_page_transition_free (page_transition);
2110         g_object_unref (poppler_page);
2111
2112         return effect;
2113 }
2114
2115 static void
2116 pdf_document_page_transition_iface_init (EvDocumentTransitionInterface *iface)
2117 {
2118         iface->get_page_duration = pdf_document_get_page_duration;
2119         iface->get_effect = pdf_document_get_effect;
2120 }
2121
2122 /* Forms */
2123 static void
2124 pdf_document_get_crop_box (EvDocument  *document,
2125                            int          page,
2126                            EvRectangle *rect)
2127 {
2128         PdfDocument *pdf_document;
2129         PopplerPage *poppler_page;
2130         PopplerRectangle poppler_rect;
2131
2132         pdf_document = PDF_DOCUMENT (document);
2133         poppler_page = poppler_document_get_page (pdf_document->document, page);
2134         poppler_page_get_crop_box (poppler_page, &poppler_rect);
2135         rect->x1 = poppler_rect.x1;
2136         rect->x2 = poppler_rect.x2;
2137         rect->y1 = poppler_rect.y1;
2138         rect->y2 = poppler_rect.y2;
2139 }
2140
2141 static EvFormField *
2142 ev_form_field_from_poppler_field (PopplerFormField *poppler_field)
2143 {
2144         EvFormField *ev_field = NULL;
2145         gint         id;
2146         gdouble      font_size;
2147         gboolean     is_read_only;
2148
2149         id = poppler_form_field_get_id (poppler_field);
2150         font_size = poppler_form_field_get_font_size (poppler_field);
2151         is_read_only = poppler_form_field_is_read_only (poppler_field);
2152
2153         switch (poppler_form_field_get_field_type (poppler_field)) {
2154                 case POPPLER_FORM_FIELD_TEXT: {
2155                         EvFormFieldText    *field_text;
2156                         EvFormFieldTextType ev_text_type = EV_FORM_FIELD_TEXT_NORMAL;
2157
2158                         switch (poppler_form_field_text_get_text_type (poppler_field)) {
2159                                 case POPPLER_FORM_TEXT_NORMAL:
2160                                         ev_text_type = EV_FORM_FIELD_TEXT_NORMAL;
2161                                         break;
2162                                 case POPPLER_FORM_TEXT_MULTILINE:
2163                                         ev_text_type = EV_FORM_FIELD_TEXT_MULTILINE;
2164                                         break;
2165                                 case POPPLER_FORM_TEXT_FILE_SELECT:
2166                                         ev_text_type = EV_FORM_FIELD_TEXT_FILE_SELECT;
2167                                         break;
2168                         }
2169
2170                         ev_field = ev_form_field_text_new (id, ev_text_type);
2171                         field_text = EV_FORM_FIELD_TEXT (ev_field);
2172
2173                         field_text->do_spell_check = poppler_form_field_text_do_spell_check (poppler_field);
2174                         field_text->do_scroll = poppler_form_field_text_do_scroll (poppler_field);
2175                         field_text->is_rich_text = poppler_form_field_text_is_rich_text (poppler_field);
2176                         field_text->is_password = poppler_form_field_text_is_password (poppler_field);
2177                         field_text->max_len = poppler_form_field_text_get_max_len (poppler_field);
2178                         field_text->text = poppler_form_field_text_get_text (poppler_field);
2179
2180                 }
2181                         break;
2182                 case POPPLER_FORM_FIELD_BUTTON: {
2183                         EvFormFieldButton    *field_button;
2184                         EvFormFieldButtonType ev_button_type = EV_FORM_FIELD_BUTTON_PUSH;
2185
2186                         switch (poppler_form_field_button_get_button_type (poppler_field)) {
2187                                 case POPPLER_FORM_BUTTON_PUSH:
2188                                         ev_button_type = EV_FORM_FIELD_BUTTON_PUSH;
2189                                         break;
2190                                 case POPPLER_FORM_BUTTON_CHECK:
2191                                         ev_button_type = EV_FORM_FIELD_BUTTON_CHECK;
2192                                         break;
2193                                 case POPPLER_FORM_BUTTON_RADIO:
2194                                         ev_button_type = EV_FORM_FIELD_BUTTON_RADIO;
2195                                         break;
2196                         }
2197
2198                         ev_field = ev_form_field_button_new (id, ev_button_type);
2199                         field_button = EV_FORM_FIELD_BUTTON (ev_field);
2200
2201                         field_button->state = poppler_form_field_button_get_state (poppler_field);
2202                 }
2203                         break;
2204                 case POPPLER_FORM_FIELD_CHOICE: {
2205                         EvFormFieldChoice    *field_choice;
2206                         EvFormFieldChoiceType ev_choice_type = EV_FORM_FIELD_CHOICE_COMBO;
2207
2208                         switch (poppler_form_field_choice_get_choice_type (poppler_field)) {
2209                                 case POPPLER_FORM_CHOICE_COMBO:
2210                                         ev_choice_type = EV_FORM_FIELD_CHOICE_COMBO;
2211                                         break;
2212                                 case EV_FORM_FIELD_CHOICE_LIST:
2213                                         ev_choice_type = EV_FORM_FIELD_CHOICE_LIST;
2214                                         break;
2215                         }
2216
2217                         ev_field = ev_form_field_choice_new (id, ev_choice_type);
2218                         field_choice = EV_FORM_FIELD_CHOICE (ev_field);
2219
2220                         field_choice->is_editable = poppler_form_field_choice_is_editable (poppler_field);
2221                         field_choice->multi_select = poppler_form_field_choice_can_select_multiple (poppler_field);
2222                         field_choice->do_spell_check = poppler_form_field_choice_do_spell_check (poppler_field);
2223                         field_choice->commit_on_sel_change = poppler_form_field_choice_commit_on_change (poppler_field);
2224
2225                         /* TODO: we need poppler_form_field_choice_get_selected_items in poppler
2226                         field_choice->selected_items = poppler_form_field_choice_get_selected_items (poppler_field);*/
2227                         if (field_choice->is_editable)
2228                                 field_choice->text = poppler_form_field_choice_get_text (poppler_field);
2229                 }
2230                         break;
2231                 case POPPLER_FORM_FIELD_SIGNATURE:
2232                         /* TODO */
2233                         ev_field = ev_form_field_signature_new (id);
2234                         break;
2235                 case POPPLER_FORM_FIELD_UNKNOWN:
2236                         return NULL;
2237         }
2238
2239         ev_field->font_size = font_size;
2240         ev_field->is_read_only = is_read_only;
2241
2242         return ev_field;
2243 }
2244
2245 static GList *
2246 pdf_document_forms_get_form_fields (EvDocumentForms *document,
2247                                     EvPage          *page)
2248 {
2249         PopplerPage *poppler_page;
2250         GList *retval = NULL;
2251         GList *fields;
2252         GList *list;
2253         double height;
2254
2255         g_return_val_if_fail (POPPLER_IS_PAGE (page->backend_page), NULL);
2256
2257         poppler_page = POPPLER_PAGE (page->backend_page);
2258         fields = poppler_page_get_form_field_mapping (poppler_page);
2259         poppler_page_get_size (poppler_page, NULL, &height);
2260
2261         for (list = fields; list; list = list->next) {
2262                 PopplerFormFieldMapping *mapping;
2263                 EvMapping *field_mapping;
2264                 EvFormField *ev_field;
2265
2266                 mapping = (PopplerFormFieldMapping *)list->data;
2267
2268                 ev_field = ev_form_field_from_poppler_field (mapping->field);
2269                 if (!ev_field)
2270                         continue;
2271
2272                 field_mapping = g_new0 (EvMapping, 1);
2273                 field_mapping->area.x1 = mapping->area.x1;
2274                 field_mapping->area.x2 = mapping->area.x2;
2275                 field_mapping->area.y1 = height - mapping->area.y2;
2276                 field_mapping->area.y2 = height - mapping->area.y1;
2277                 field_mapping->data = ev_field;
2278                 ev_field->page = EV_PAGE (g_object_ref (page));
2279
2280                 g_object_set_data_full (G_OBJECT (ev_field),
2281                                         "poppler-field",
2282                                         g_object_ref (mapping->field),
2283                                         (GDestroyNotify) g_object_unref);
2284
2285                 retval = g_list_prepend (retval, field_mapping);
2286         }
2287
2288         poppler_page_free_form_field_mapping (fields);
2289
2290         return g_list_reverse (retval);
2291 }
2292
2293 static gchar *
2294 pdf_document_forms_form_field_text_get_text (EvDocumentForms *document,
2295                                              EvFormField     *field)
2296
2297 {
2298         PopplerFormField *poppler_field;
2299         gchar *text;
2300
2301         poppler_field = POPPLER_FORM_FIELD (g_object_get_data (G_OBJECT (field), "poppler-field"));
2302         if (!poppler_field)
2303                 return NULL;
2304
2305         text = poppler_form_field_text_get_text (poppler_field);
2306
2307         return text;
2308 }
2309
2310 static void
2311 pdf_document_forms_form_field_text_set_text (EvDocumentForms *document,
2312                                              EvFormField     *field,
2313                                              const gchar     *text)
2314 {
2315         PopplerFormField *poppler_field;
2316
2317         poppler_field = POPPLER_FORM_FIELD (g_object_get_data (G_OBJECT (field), "poppler-field"));
2318         if (!poppler_field)
2319                 return;
2320
2321         poppler_form_field_text_set_text (poppler_field, text);
2322         PDF_DOCUMENT (document)->modified = TRUE;
2323 }
2324
2325 static void
2326 pdf_document_forms_form_field_button_set_state (EvDocumentForms *document,
2327                                                 EvFormField     *field,
2328                                                 gboolean         state)
2329 {
2330         PopplerFormField *poppler_field;
2331
2332         poppler_field = POPPLER_FORM_FIELD (g_object_get_data (G_OBJECT (field), "poppler-field"));
2333         if (!poppler_field)
2334                 return;
2335
2336         poppler_form_field_button_set_state (poppler_field, state);
2337         PDF_DOCUMENT (document)->modified = TRUE;
2338 }
2339
2340 static gboolean
2341 pdf_document_forms_form_field_button_get_state (EvDocumentForms *document,
2342                                                 EvFormField     *field)
2343 {
2344         PopplerFormField *poppler_field;
2345         gboolean state;
2346
2347         poppler_field = POPPLER_FORM_FIELD (g_object_get_data (G_OBJECT (field), "poppler-field"));
2348         if (!poppler_field)
2349                 return FALSE;
2350
2351         state = poppler_form_field_button_get_state (poppler_field);
2352
2353         return state;
2354 }
2355
2356 static gchar *
2357 pdf_document_forms_form_field_choice_get_item (EvDocumentForms *document,
2358                                                EvFormField     *field,
2359                                                gint             index)
2360 {
2361         PopplerFormField *poppler_field;
2362         gchar *text;
2363
2364         poppler_field = POPPLER_FORM_FIELD (g_object_get_data (G_OBJECT (field), "poppler-field"));
2365         if (!poppler_field)
2366                 return NULL;
2367
2368         text = poppler_form_field_choice_get_item (poppler_field, index);
2369
2370         return text;
2371 }
2372
2373 static int
2374 pdf_document_forms_form_field_choice_get_n_items (EvDocumentForms *document,
2375                                                   EvFormField     *field)
2376 {
2377         PopplerFormField *poppler_field;
2378         gint n_items;
2379
2380         poppler_field = POPPLER_FORM_FIELD (g_object_get_data (G_OBJECT (field), "poppler-field"));
2381         if (!poppler_field)
2382                 return -1;
2383
2384         n_items = poppler_form_field_choice_get_n_items (poppler_field);
2385
2386         return n_items;
2387 }
2388
2389 static gboolean
2390 pdf_document_forms_form_field_choice_is_item_selected (EvDocumentForms *document,
2391                                                        EvFormField     *field,
2392                                                        gint             index)
2393 {
2394         PopplerFormField *poppler_field;
2395         gboolean selected;
2396
2397         poppler_field = POPPLER_FORM_FIELD (g_object_get_data (G_OBJECT (field), "poppler-field"));
2398         if (!poppler_field)
2399                 return FALSE;
2400
2401         selected = poppler_form_field_choice_is_item_selected (poppler_field, index);
2402
2403         return selected;
2404 }
2405
2406 static void
2407 pdf_document_forms_form_field_choice_select_item (EvDocumentForms *document,
2408                                                   EvFormField     *field,
2409                                                   gint             index)
2410 {
2411         PopplerFormField *poppler_field;
2412
2413         poppler_field = POPPLER_FORM_FIELD (g_object_get_data (G_OBJECT (field), "poppler-field"));
2414         if (!poppler_field)
2415                 return;
2416
2417         poppler_form_field_choice_select_item (poppler_field, index);
2418         PDF_DOCUMENT (document)->modified = TRUE;
2419 }
2420
2421 static void
2422 pdf_document_forms_form_field_choice_toggle_item (EvDocumentForms *document,
2423                                                   EvFormField     *field,
2424                                                   gint             index)
2425 {
2426         PopplerFormField *poppler_field;
2427
2428         poppler_field = POPPLER_FORM_FIELD (g_object_get_data (G_OBJECT (field), "poppler-field"));
2429         if (!poppler_field)
2430                 return;
2431
2432         poppler_form_field_choice_toggle_item (poppler_field, index);
2433         PDF_DOCUMENT (document)->modified = TRUE;
2434 }
2435
2436 static void
2437 pdf_document_forms_form_field_choice_unselect_all (EvDocumentForms *document,
2438                                                    EvFormField     *field)
2439 {
2440         PopplerFormField *poppler_field;
2441
2442         poppler_field = POPPLER_FORM_FIELD (g_object_get_data (G_OBJECT (field), "poppler-field"));
2443         if (!poppler_field)
2444                 return;
2445
2446         poppler_form_field_choice_unselect_all (poppler_field);
2447         PDF_DOCUMENT (document)->modified = TRUE;
2448 }
2449
2450 static void
2451 pdf_document_forms_form_field_choice_set_text (EvDocumentForms *document,
2452                                                EvFormField     *field,
2453                                                const gchar     *text)
2454 {
2455         PopplerFormField *poppler_field;
2456
2457         poppler_field = POPPLER_FORM_FIELD (g_object_get_data (G_OBJECT (field), "poppler-field"));
2458         if (!poppler_field)
2459                 return;
2460
2461         poppler_form_field_choice_set_text (poppler_field, text);
2462         PDF_DOCUMENT (document)->modified = TRUE;
2463 }
2464
2465 static gchar *
2466 pdf_document_forms_form_field_choice_get_text (EvDocumentForms *document,
2467                                                EvFormField     *field)
2468 {
2469         PopplerFormField *poppler_field;
2470         gchar *text;
2471
2472         poppler_field = POPPLER_FORM_FIELD (g_object_get_data (G_OBJECT (field), "poppler-field"));
2473         if (!poppler_field)
2474                 return NULL;
2475
2476         text = poppler_form_field_choice_get_text (poppler_field);
2477
2478         return text;
2479 }
2480
2481 static void
2482 pdf_document_document_forms_iface_init (EvDocumentFormsInterface *iface)
2483 {
2484         iface->get_form_fields = pdf_document_forms_get_form_fields;
2485         iface->form_field_text_get_text = pdf_document_forms_form_field_text_get_text;
2486         iface->form_field_text_set_text = pdf_document_forms_form_field_text_set_text;
2487         iface->form_field_button_set_state = pdf_document_forms_form_field_button_set_state;
2488         iface->form_field_button_get_state = pdf_document_forms_form_field_button_get_state;
2489         iface->form_field_choice_get_item = pdf_document_forms_form_field_choice_get_item;
2490         iface->form_field_choice_get_n_items = pdf_document_forms_form_field_choice_get_n_items;
2491         iface->form_field_choice_is_item_selected = pdf_document_forms_form_field_choice_is_item_selected;
2492         iface->form_field_choice_select_item = pdf_document_forms_form_field_choice_select_item;
2493         iface->form_field_choice_toggle_item = pdf_document_forms_form_field_choice_toggle_item;
2494         iface->form_field_choice_unselect_all = pdf_document_forms_form_field_choice_unselect_all;
2495         iface->form_field_choice_set_text = pdf_document_forms_form_field_choice_set_text;
2496         iface->form_field_choice_get_text = pdf_document_forms_form_field_choice_get_text;
2497 }
2498
2499 /* Annotations */
2500 static void
2501 poppler_annot_color_to_gdk_color (PopplerAnnot *poppler_annot,
2502                                   GdkColor     *color)
2503 {
2504         PopplerColor *poppler_color;
2505
2506         poppler_color = poppler_annot_get_color (poppler_annot);
2507         if (poppler_color) {
2508                 color->red = poppler_color->red;
2509                 color->green = poppler_color->green;
2510                 color->blue = poppler_color->blue;
2511
2512                 g_free (poppler_color);
2513         } /* TODO: else use a default color */
2514 }
2515
2516 static EvAnnotation *
2517 ev_annot_from_poppler_annot (PopplerAnnot *poppler_annot,
2518                              EvPage       *page)
2519 {
2520         EvAnnotation *ev_annot = NULL;
2521         const gchar  *unimplemented_annot = NULL;
2522
2523         switch (poppler_annot_get_annot_type (poppler_annot)) {
2524                 case POPPLER_ANNOT_TEXT: {
2525                         PopplerAnnotText *poppler_text;
2526                         EvAnnotationText *ev_annot_text;
2527
2528                         poppler_text = POPPLER_ANNOT_TEXT (poppler_annot);
2529
2530                         ev_annot = ev_annotation_text_new (page);
2531
2532                         ev_annot_text = EV_ANNOTATION_TEXT (ev_annot);
2533                         ev_annot_text->is_open = poppler_annot_text_get_is_open (poppler_text);
2534                 }
2535                         break;
2536                 case POPPLER_ANNOT_FILE_ATTACHMENT: {
2537                         PopplerAnnotFileAttachment *poppler_annot_attachment;
2538                         EvAnnotationAttachment     *ev_annot_attachment;
2539                         PopplerAttachment          *poppler_attachment;
2540                         gchar                      *data = NULL;
2541                         gsize                       size;
2542                         GError                     *error = NULL;
2543
2544                         poppler_annot_attachment = POPPLER_ANNOT_FILE_ATTACHMENT (poppler_annot);
2545                         poppler_attachment = poppler_annot_file_attachment_get_attachment (poppler_annot_attachment);
2546
2547                         if (poppler_attachment &&
2548                             attachment_save_to_buffer (poppler_attachment, &data, &size, &error)) {
2549                                 EvAttachment *ev_attachment;
2550
2551                                 ev_attachment = ev_attachment_new (poppler_attachment->name,
2552                                                                    poppler_attachment->description,
2553                                                                    poppler_attachment->mtime,
2554                                                                    poppler_attachment->ctime,
2555                                                                    size, data);
2556                                 ev_annot = ev_annotation_attachment_new (page, ev_attachment);
2557                                 g_object_unref (ev_attachment);
2558                         } else if (error) {
2559                                 g_warning ("%s", error->message);
2560                                 g_error_free (error);
2561                         }
2562
2563                         if (poppler_attachment)
2564                                 g_object_unref (poppler_attachment);
2565                 }
2566                         break;
2567                 case POPPLER_ANNOT_LINK:
2568                 case POPPLER_ANNOT_WIDGET:
2569                         /* Ignore link and widgets annots since they are already handled */
2570                         break;
2571                 default: {
2572                         GEnumValue *enum_value;
2573
2574                         enum_value = g_enum_get_value ((GEnumClass *) g_type_class_ref (POPPLER_TYPE_ANNOT_TYPE),
2575                                                        poppler_annot_get_annot_type (poppler_annot));
2576                         unimplemented_annot = enum_value ? enum_value->value_name : "Unknown annotation";
2577                 }
2578         }
2579
2580         if (unimplemented_annot) {
2581                 g_warning ("Unimplemented annotation: %s, please post a "
2582                            "bug report in Evince bugzilla "
2583                            "(http://bugzilla.gnome.org) with a testcase.",
2584                            unimplemented_annot);
2585         }
2586
2587         if (ev_annot) {
2588                 ev_annot->contents = poppler_annot_get_contents (poppler_annot);
2589                 ev_annot->name = poppler_annot_get_name (poppler_annot);
2590                 ev_annot->modified = poppler_annot_get_modified (poppler_annot);
2591                 poppler_annot_color_to_gdk_color (poppler_annot, &ev_annot->color);
2592
2593                 if (POPPLER_IS_ANNOT_MARKUP (poppler_annot)) {
2594                         PopplerAnnotMarkup *markup;
2595                         gchar *label;
2596                         gdouble opacity;
2597                         PopplerRectangle poppler_rect;
2598
2599                         markup = POPPLER_ANNOT_MARKUP (poppler_annot);
2600
2601                         if (poppler_annot_markup_get_popup_rectangle (markup, &poppler_rect)) {
2602                                 EvRectangle ev_rect;
2603                                 gboolean is_open;
2604                                 gdouble height;
2605
2606                                 poppler_page_get_size (POPPLER_PAGE (page->backend_page),
2607                                                        NULL, &height);
2608                                 ev_rect.x1 = poppler_rect.x1;
2609                                 ev_rect.x2 = poppler_rect.x2;
2610                                 ev_rect.y1 = height - poppler_rect.y2;
2611                                 ev_rect.y2 = height - poppler_rect.y1;
2612
2613                                 is_open = poppler_annot_markup_get_popup_is_open (markup);
2614
2615                                 g_object_set (ev_annot,
2616                                               "rectangle", &ev_rect,
2617                                               "is_open", is_open,
2618                                               "has_popup", TRUE,
2619                                               NULL);
2620                         } else {
2621                                 /* FIXME: Use poppler_annot_markup_has_popup() when
2622                                  * new poppler is released.
2623                                  */
2624                                 g_object_set (ev_annot,
2625                                               "has_popup", FALSE,
2626                                               NULL);
2627                         }
2628
2629                         label = poppler_annot_markup_get_label (markup);
2630                         opacity = poppler_annot_markup_get_opacity (markup);
2631
2632                         g_object_set (ev_annot,
2633                                       "label", label,
2634                                       "opacity", opacity,
2635                                       NULL);
2636
2637                         g_free (label);
2638                 }
2639         }
2640
2641         return ev_annot;
2642 }
2643
2644 static GList *
2645 pdf_document_annotations_get_annotations (EvDocumentAnnotations *document_annotations,
2646                                           EvPage                *page)
2647 {
2648         GList *retval = NULL;
2649         PdfDocument *pdf_document;
2650         PopplerPage *poppler_page;
2651         GList *annots;
2652         GList *list;
2653         gdouble height;
2654         gint i = 0;
2655
2656         pdf_document = PDF_DOCUMENT (document_annotations);
2657         poppler_page = POPPLER_PAGE (page->backend_page);
2658         annots = poppler_page_get_annot_mapping (poppler_page);
2659         poppler_page_get_size (poppler_page, NULL, &height);
2660
2661         for (list = annots; list; list = list->next) {
2662                 PopplerAnnotMapping *mapping;
2663                 EvMapping *annot_mapping;
2664                 EvAnnotation        *ev_annot;
2665
2666                 mapping = (PopplerAnnotMapping *)list->data;
2667
2668                 ev_annot = ev_annot_from_poppler_annot (mapping->annot, page);
2669                 if (!ev_annot)
2670                         continue;
2671
2672                 i++;
2673
2674                 /* Make sure annot has a unique name */
2675                 if (!ev_annot->name)
2676                         ev_annot->name = g_strdup_printf ("annot-%d-%d", page->index, i);
2677
2678                 annot_mapping = g_new (EvMapping, 1);
2679                 annot_mapping->area.x1 = mapping->area.x1;
2680                 annot_mapping->area.x2 = mapping->area.x2;
2681                 annot_mapping->area.y1 = height - mapping->area.y2;
2682                 annot_mapping->area.y2 = height - mapping->area.y1;
2683                 annot_mapping->data = ev_annot;
2684
2685                 g_object_set_data_full (G_OBJECT (ev_annot),
2686                                         "poppler-annot",
2687                                         g_object_ref (mapping->annot),
2688                                         (GDestroyNotify) g_object_unref);
2689
2690                 retval = g_list_prepend (retval, annot_mapping);
2691         }
2692
2693         poppler_page_free_annot_mapping (annots);
2694
2695         return g_list_reverse (retval);
2696 }
2697
2698 static void
2699 pdf_document_annotations_annotation_set_contents (EvDocumentAnnotations *document,
2700                                                   EvAnnotation          *annot,
2701                                                   const gchar           *contents)
2702 {
2703         PopplerAnnot *poppler_annot;
2704
2705         poppler_annot = POPPLER_ANNOT (g_object_get_data (G_OBJECT (annot), "poppler-annot"));
2706         if (!poppler_annot)
2707                 return;
2708
2709         poppler_annot_set_contents (poppler_annot, contents);
2710         PDF_DOCUMENT (document)->modified = TRUE;
2711 }
2712
2713 static void
2714 pdf_document_document_annotations_iface_init (EvDocumentAnnotationsInterface *iface)
2715 {
2716         iface->get_annotations = pdf_document_annotations_get_annotations;
2717         iface->annotation_set_contents = pdf_document_annotations_annotation_set_contents;
2718 }
2719
2720 /* Attachments */
2721 struct SaveToBufferData {
2722         gchar *buffer;
2723         gsize len, max;
2724 };
2725
2726 static gboolean
2727 attachment_save_to_buffer_callback (const gchar  *buf,
2728                                     gsize         count,
2729                                     gpointer      user_data,
2730                                     GError      **error)
2731 {
2732         struct SaveToBufferData *sdata = (SaveToBufferData *)user_data;
2733         gchar *new_buffer;
2734         gsize new_max;
2735
2736         if (sdata->len + count > sdata->max) {
2737                 new_max = MAX (sdata->max * 2, sdata->len + count);
2738                 new_buffer = (gchar *)g_realloc (sdata->buffer, new_max);
2739
2740                 sdata->buffer = new_buffer;
2741                 sdata->max = new_max;
2742         }
2743
2744         memcpy (sdata->buffer + sdata->len, buf, count);
2745         sdata->len += count;
2746
2747         return TRUE;
2748 }
2749
2750 static gboolean
2751 attachment_save_to_buffer (PopplerAttachment  *attachment,
2752                            gchar             **buffer,
2753                            gsize              *buffer_size,
2754                            GError            **error)
2755 {
2756         static const gint initial_max = 1024;
2757         struct SaveToBufferData sdata;
2758
2759         *buffer = NULL;
2760         *buffer_size = 0;
2761
2762         sdata.buffer = (gchar *) g_malloc (initial_max);
2763         sdata.max = initial_max;
2764         sdata.len = 0;
2765
2766         if (! poppler_attachment_save_to_callback (attachment,
2767                                                    attachment_save_to_buffer_callback,
2768                                                    &sdata,
2769                                                    error)) {
2770                 g_free (sdata.buffer);
2771                 return FALSE;
2772         }
2773
2774         *buffer = sdata.buffer;
2775         *buffer_size = sdata.len;
2776
2777         return TRUE;
2778 }
2779
2780 static GList *
2781 pdf_document_attachments_get_attachments (EvDocumentAttachments *document)
2782 {
2783         PdfDocument *pdf_document = PDF_DOCUMENT (document);
2784         GList *attachments;
2785         GList *list;
2786         GList *retval = NULL;
2787
2788         attachments = poppler_document_get_attachments (pdf_document->document);
2789
2790         for (list = attachments; list; list = list->next) {
2791                 PopplerAttachment *attachment;
2792                 EvAttachment *ev_attachment;
2793                 gchar *data = NULL;
2794                 gsize size;
2795                 GError *error = NULL;
2796
2797                 attachment = (PopplerAttachment *) list->data;
2798
2799                 if (attachment_save_to_buffer (attachment, &data, &size, &error)) {
2800                         ev_attachment = ev_attachment_new (attachment->name,
2801                                                            attachment->description,
2802                                                            attachment->mtime,
2803                                                            attachment->ctime,
2804                                                            size, data);
2805
2806                         retval = g_list_prepend (retval, ev_attachment);
2807                 } else {
2808                         if (error) {
2809                                 g_warning ("%s", error->message);
2810                                 g_error_free (error);
2811
2812                                 g_free (data);
2813                         }
2814                 }
2815
2816                 g_object_unref (attachment);
2817         }
2818
2819         return g_list_reverse (retval);
2820 }
2821
2822 static gboolean
2823 pdf_document_attachments_has_attachments (EvDocumentAttachments *document)
2824 {
2825         PdfDocument *pdf_document = PDF_DOCUMENT (document);
2826
2827         return poppler_document_has_attachments (pdf_document->document);
2828 }
2829
2830 static void
2831 pdf_document_document_attachments_iface_init (EvDocumentAttachmentsInterface *iface)
2832 {
2833         iface->has_attachments = pdf_document_attachments_has_attachments;
2834         iface->get_attachments = pdf_document_attachments_get_attachments;
2835 }
2836
2837 /* Layers */
2838 static gboolean
2839 pdf_document_layers_has_layers (EvDocumentLayers *document)
2840 {
2841         PdfDocument *pdf_document = PDF_DOCUMENT (document);
2842         PopplerLayersIter *iter;
2843
2844         iter = poppler_layers_iter_new (pdf_document->document);
2845         if (!iter)
2846                 return FALSE;
2847         poppler_layers_iter_free (iter);
2848
2849         return TRUE;
2850 }
2851
2852 static void
2853 build_layers_tree (PdfDocument       *pdf_document,
2854                    GtkTreeModel      *model,
2855                    GtkTreeIter       *parent,
2856                    PopplerLayersIter *iter)
2857 {
2858         do {
2859                 GtkTreeIter        tree_iter;
2860                 PopplerLayersIter *child;
2861                 PopplerLayer      *layer;
2862                 EvLayer           *ev_layer = NULL;
2863                 gboolean           visible;
2864                 gchar             *markup;
2865                 gint               rb_group = 0;
2866
2867                 layer = poppler_layers_iter_get_layer (iter);
2868                 if (layer) {
2869                         markup = g_markup_escape_text (poppler_layer_get_title (layer), -1);
2870                         visible = poppler_layer_is_visible (layer);
2871                         rb_group = poppler_layer_get_radio_button_group_id (layer);
2872                         pdf_document->layers = g_list_append (pdf_document->layers,
2873                                                               g_object_ref (layer));
2874                         ev_layer = ev_layer_new (g_list_length (pdf_document->layers) - 1,
2875                                                  poppler_layer_is_parent (layer),
2876                                                  rb_group);
2877                 } else {
2878                         gchar *title;
2879
2880                         title = poppler_layers_iter_get_title (iter);
2881                         markup = g_markup_escape_text (title, -1);
2882                         g_free (title);
2883
2884                         visible = FALSE;
2885                         layer = NULL;
2886                 }
2887
2888                 gtk_tree_store_append (GTK_TREE_STORE (model), &tree_iter, parent);
2889                 gtk_tree_store_set (GTK_TREE_STORE (model), &tree_iter,
2890                                     EV_DOCUMENT_LAYERS_COLUMN_TITLE, markup,
2891                                     EV_DOCUMENT_LAYERS_COLUMN_VISIBLE, visible,
2892                                     EV_DOCUMENT_LAYERS_COLUMN_ENABLED, TRUE, /* FIXME */
2893                                     EV_DOCUMENT_LAYERS_COLUMN_SHOWTOGGLE, (layer != NULL),
2894                                     EV_DOCUMENT_LAYERS_COLUMN_RBGROUP, rb_group,
2895                                     EV_DOCUMENT_LAYERS_COLUMN_LAYER, ev_layer,
2896                                     -1);
2897                 if (ev_layer)
2898                         g_object_unref (ev_layer);
2899                 g_free (markup);
2900
2901                 child = poppler_layers_iter_get_child (iter);
2902                 if (child)
2903                         build_layers_tree (pdf_document, model, &tree_iter, child);
2904                 poppler_layers_iter_free (child);
2905         } while (poppler_layers_iter_next (iter));
2906 }
2907
2908 static GtkTreeModel *
2909 pdf_document_layers_get_layers (EvDocumentLayers *document)
2910 {
2911         GtkTreeModel *model = NULL;
2912         PdfDocument *pdf_document = PDF_DOCUMENT (document);
2913         PopplerLayersIter *iter;
2914
2915         iter = poppler_layers_iter_new (pdf_document->document);
2916         if (iter) {
2917                 model = (GtkTreeModel *) gtk_tree_store_new (EV_DOCUMENT_LAYERS_N_COLUMNS,
2918                                                              G_TYPE_STRING,  /* TITLE */
2919                                                              G_TYPE_OBJECT,  /* LAYER */
2920                                                              G_TYPE_BOOLEAN, /* VISIBLE */
2921                                                              G_TYPE_BOOLEAN, /* ENABLED */
2922                                                              G_TYPE_BOOLEAN, /* SHOWTOGGLE */
2923                                                              G_TYPE_INT);    /* RBGROUP */
2924                 build_layers_tree (pdf_document, model, NULL, iter);
2925                 poppler_layers_iter_free (iter);
2926         }
2927         return model;
2928 }
2929
2930 static void
2931 pdf_document_layers_show_layer (EvDocumentLayers *document,
2932                                 EvLayer          *layer)
2933 {
2934         PdfDocument *pdf_document = PDF_DOCUMENT (document);
2935         guint        layer_id = ev_layer_get_id (layer);
2936
2937         poppler_layer_show (POPPLER_LAYER (g_list_nth_data (pdf_document->layers, layer_id)));
2938 }
2939
2940 static void
2941 pdf_document_layers_hide_layer (EvDocumentLayers *document,
2942                                 EvLayer          *layer)
2943 {
2944         PdfDocument *pdf_document = PDF_DOCUMENT (document);
2945         guint        layer_id = ev_layer_get_id (layer);
2946
2947         poppler_layer_hide (POPPLER_LAYER (g_list_nth_data (pdf_document->layers, layer_id)));
2948 }
2949
2950 static gboolean
2951 pdf_document_layers_layer_is_visible (EvDocumentLayers *document,
2952                                       EvLayer          *layer)
2953 {
2954         PdfDocument *pdf_document = PDF_DOCUMENT (document);
2955         guint        layer_id = ev_layer_get_id (layer);
2956
2957         return poppler_layer_is_visible (POPPLER_LAYER (g_list_nth_data (pdf_document->layers, layer_id)));
2958 }
2959
2960 static void
2961 pdf_document_document_layers_iface_init (EvDocumentLayersInterface *iface)
2962 {
2963         iface->has_layers = pdf_document_layers_has_layers;
2964         iface->get_layers = pdf_document_layers_get_layers;
2965         iface->show_layer = pdf_document_layers_show_layer;
2966         iface->hide_layer = pdf_document_layers_hide_layer;
2967         iface->layer_is_visible = pdf_document_layers_layer_is_visible;
2968 }