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1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8; c-indent-level: 8 -*- */
2 /* pdfdocument.h: Implementation of EvDocument for PDF
3  * Copyright (C) 2004, Red Hat, Inc.
4  *
5  * This program is free software; you can redistribute it and/or modify
6  * it under the terms of the GNU General Public License as published by
7  * the Free Software Foundation; either version 2, or (at your option)
8  * any later version.
9  *
10  * This program is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13  * GNU General Public License for more details.
14  *
15  * You should have received a copy of the GNU General Public License
16  * along with this program; if not, write to the Free Software
17  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
18  */
19
20 #include <math.h>
21 #include <string.h>
22 #include <gtk/gtk.h>
23 #include <poppler.h>
24 #include <poppler-document.h>
25 #include <poppler-page.h>
26 #include <glib/gi18n.h>
27
28 #include "ev-poppler.h"
29 #include "ev-ps-exporter.h"
30 #include "ev-document-find.h"
31 #include "ev-document-misc.h"
32 #include "ev-document-links.h"
33 #include "ev-document-fonts.h"
34 #include "ev-document-security.h"
35 #include "ev-document-thumbnails.h"
36 #include "ev-selection.h"
37
38 typedef struct {
39         PdfDocument *document;
40         char *text;
41         GList **pages;
42         guint idle;
43         int start_page;
44         int search_page;
45 } PdfDocumentSearch;
46
47 struct _PdfDocumentClass
48 {
49         GObjectClass parent_class;
50 };
51
52 struct _PdfDocument
53 {
54         GObject parent_instance;
55
56         PopplerDocument *document;
57         PopplerPSFile *ps_file;
58         gchar *password;
59
60         PopplerFontInfo *font_info;
61         PopplerFontsIter *fonts_iter;
62         int fonts_scanned_pages;
63
64         PdfDocumentSearch *search;
65 };
66
67 static void pdf_document_document_iface_init            (EvDocumentIface           *iface);
68 static void pdf_document_security_iface_init            (EvDocumentSecurityIface   *iface);
69 static void pdf_document_document_thumbnails_iface_init (EvDocumentThumbnailsIface *iface);
70 static void pdf_document_document_links_iface_init      (EvDocumentLinksIface      *iface);
71 static void pdf_document_document_fonts_iface_init      (EvDocumentFontsIface      *iface);
72 static void pdf_document_find_iface_init                (EvDocumentFindIface       *iface);
73 static void pdf_document_ps_exporter_iface_init         (EvPSExporterIface         *iface);
74 static void pdf_selection_iface_init                    (EvSelectionIface          *iface);
75 static void pdf_document_thumbnails_get_dimensions      (EvDocumentThumbnails      *document_thumbnails,
76                                                          gint                       page,
77                                                          gint                       size,
78                                                          gint                      *width,
79                                                          gint                      *height);
80 static int  pdf_document_get_n_pages                    (EvDocument                *document);
81
82 static EvLink * ev_link_from_action (PopplerAction *action);
83 static void pdf_document_search_free (PdfDocumentSearch   *search);
84
85
86 G_DEFINE_TYPE_WITH_CODE (PdfDocument, pdf_document, G_TYPE_OBJECT,
87                          {
88                                  G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT,
89                                                         pdf_document_document_iface_init);
90                                  G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_SECURITY,
91                                                         pdf_document_security_iface_init);
92                                  G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_THUMBNAILS,
93                                                         pdf_document_document_thumbnails_iface_init);
94                                  G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_LINKS,
95                                                         pdf_document_document_links_iface_init);
96                                  G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_FONTS,
97                                                         pdf_document_document_fonts_iface_init);
98                                  G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_FIND,
99                                                         pdf_document_find_iface_init);
100                                  G_IMPLEMENT_INTERFACE (EV_TYPE_PS_EXPORTER,
101                                                         pdf_document_ps_exporter_iface_init);
102                                  G_IMPLEMENT_INTERFACE (EV_TYPE_SELECTION,
103                                                         pdf_selection_iface_init);
104                          });
105
106
107 static void
108 set_rc_data (PdfDocument     *pdf_document,
109              EvRenderContext *rc)
110 {
111         if (rc->data == NULL) {
112                 rc->data = poppler_document_get_page (pdf_document->document,
113                                                       rc->page);
114                 rc->destroy = g_object_unref;
115         } else {
116                 g_assert (rc->page == poppler_page_get_index (POPPLER_PAGE (rc->data)));
117         }
118 }
119
120 static void
121 pdf_document_search_free (PdfDocumentSearch   *search)
122 {
123         PdfDocument *pdf_document = search->document;
124         int n_pages;
125         int i;
126
127         if (search->idle != 0)
128                 g_source_remove (search->idle);
129
130         n_pages = pdf_document_get_n_pages (EV_DOCUMENT (pdf_document));
131         for (i = 0; i < n_pages; i++) {
132                 g_list_foreach (search->pages[i], (GFunc) g_free, NULL);
133                 g_list_free (search->pages[i]);
134         }
135         
136         g_free (search->text);
137 }
138
139 static void
140 pdf_document_dispose (GObject *object)
141 {
142         PdfDocument *pdf_document = PDF_DOCUMENT(object);
143
144         if (pdf_document->search) {
145                 pdf_document_search_free (pdf_document->search);
146                 pdf_document->search = NULL;
147         }
148
149         if (pdf_document->document) {
150                 g_object_unref (pdf_document->document);
151         }
152
153         if (pdf_document->font_info) { 
154                 poppler_font_info_free (pdf_document->font_info);
155         }
156
157         if (pdf_document->fonts_iter) {
158                 poppler_fonts_iter_free (pdf_document->fonts_iter);
159         }
160 }
161
162 static void
163 pdf_document_class_init (PdfDocumentClass *klass)
164 {
165         GObjectClass *g_object_class = G_OBJECT_CLASS (klass);
166
167         g_object_class->dispose = pdf_document_dispose;
168 }
169
170 static void
171 pdf_document_init (PdfDocument *pdf_document)
172 {
173         pdf_document->password = NULL;
174 }
175
176 static void
177 convert_error (GError  *poppler_error,
178                GError **error)
179 {
180         if (poppler_error == NULL)
181                 return;
182
183         if (poppler_error->domain == POPPLER_ERROR) {
184                 /* convert poppler errors into EvDocument errors */
185                 gint code = EV_DOCUMENT_ERROR_INVALID;
186                 if (poppler_error->code == POPPLER_ERROR_INVALID)
187                         code = EV_DOCUMENT_ERROR_INVALID;
188                 else if (poppler_error->code == POPPLER_ERROR_ENCRYPTED)
189                         code = EV_DOCUMENT_ERROR_ENCRYPTED;
190                         
191
192                 g_set_error (error,
193                              EV_DOCUMENT_ERROR,
194                              code,
195                              poppler_error->message,
196                              NULL);
197         } else {
198                 g_propagate_error (error, poppler_error);
199         }
200 }
201
202
203 /* EvDocument */
204 static gboolean
205 pdf_document_save (EvDocument  *document,
206                    const char  *uri,
207                    GError     **error)
208 {
209         gboolean retval;
210         GError *poppler_error = NULL;
211
212         retval = poppler_document_save (PDF_DOCUMENT (document)->document,
213                                         uri,
214                                         &poppler_error);
215         if (! retval)
216                 convert_error (poppler_error, error);
217
218         return retval;
219 }
220
221 static gboolean
222 pdf_document_load (EvDocument   *document,
223                    const char   *uri,
224                    GError      **error)
225 {
226         GError *poppler_error = NULL;
227         PdfDocument *pdf_document = PDF_DOCUMENT (document);
228
229         pdf_document->document =
230                 poppler_document_new_from_file (uri, pdf_document->password, &poppler_error);
231
232         if (pdf_document->document == NULL) {
233                 convert_error (poppler_error, error);
234                 return FALSE;
235         }
236
237         return TRUE;
238 }
239
240 static int
241 pdf_document_get_n_pages (EvDocument *document)
242 {
243         return poppler_document_get_n_pages (PDF_DOCUMENT (document)->document);
244 }
245
246 static void
247 pdf_document_get_page_size (EvDocument   *document,
248                             int           page,
249                             double       *width,
250                             double       *height)
251 {
252         PdfDocument *pdf_document = PDF_DOCUMENT (document);
253         PopplerPage *poppler_page;
254
255         poppler_page = poppler_document_get_page (pdf_document->document, page);
256         poppler_page_get_size (poppler_page, width, height);
257         g_object_unref (poppler_page);
258 }
259
260 static char *
261 pdf_document_get_page_label (EvDocument *document,
262                              int         page)
263 {
264         PopplerPage *poppler_page;
265         char *label = NULL;
266
267         poppler_page = poppler_document_get_page (PDF_DOCUMENT (document)->document,
268                                                   page);
269
270         g_object_get (G_OBJECT (poppler_page),
271                       "label", &label,
272                       NULL);
273         g_object_unref (poppler_page);
274
275         return label;
276 }
277
278 static GList *
279 pdf_document_get_links (EvDocument *document,
280                         int         page)
281 {
282         PdfDocument *pdf_document;
283         PopplerPage *poppler_page;
284         GList *retval = NULL;
285         GList *mapping_list;
286         GList *list;
287         double height;
288
289         pdf_document = PDF_DOCUMENT (document);
290         poppler_page = poppler_document_get_page (pdf_document->document,
291                                                   page);
292         mapping_list = poppler_page_get_link_mapping (poppler_page);
293         poppler_page_get_size (poppler_page, NULL, &height);
294
295         for (list = mapping_list; list; list = list->next) {
296                 PopplerLinkMapping *link_mapping;
297                 EvLinkMapping *ev_link_mapping;
298
299                 link_mapping = (PopplerLinkMapping *)list->data;
300                 ev_link_mapping = g_new (EvLinkMapping, 1);
301                 ev_link_mapping->link = ev_link_from_action (link_mapping->action);
302                 ev_link_mapping->x1 = link_mapping->area.x1;
303                 ev_link_mapping->x2 = link_mapping->area.x2;
304                 /* Invert this for X-style coordinates */
305                 ev_link_mapping->y1 = height - link_mapping->area.y2;
306                 ev_link_mapping->y2 = height - link_mapping->area.y1;
307
308                 retval = g_list_prepend (retval, ev_link_mapping);
309         }
310
311         poppler_page_free_link_mapping (mapping_list);
312         g_object_unref (poppler_page);
313
314         return g_list_reverse (retval);
315 }
316                         
317
318 static GdkPixbuf *
319 pdf_document_render_pixbuf (EvDocument   *document,
320                             EvRenderContext *rc)
321 {
322         PdfDocument *pdf_document;
323         GdkPixbuf *pixbuf;
324         double width_points, height_points;
325         gint width, height;
326
327         pdf_document = PDF_DOCUMENT (document);
328
329         set_rc_data (pdf_document, rc);
330
331         poppler_page_get_size (POPPLER_PAGE (rc->data), &width_points, &height_points);
332
333         if (rc->rotation == 90 || rc->rotation == 270) {
334                 width = (int) ((height_points * rc->scale) + 0.5);
335                 height = (int) ((width_points * rc->scale) + 0.5);
336         } else {
337                 width = (int) ((width_points * rc->scale) + 0.5);
338                 height = (int) ((height_points * rc->scale) + 0.5);
339         }
340
341         pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB,
342                                  FALSE, 8,
343                                  width, height);
344
345         poppler_page_render_to_pixbuf (POPPLER_PAGE (rc->data),
346                                        0, 0,
347                                        width, height,
348                                        rc->scale,
349                                        rc->rotation,
350                                        pixbuf);
351         
352         
353         return pixbuf;
354 }
355
356 /* EvDocumentSecurity */
357
358 static gboolean
359 pdf_document_has_document_security (EvDocumentSecurity *document_security)
360 {
361         /* FIXME: do we really need to have this? */
362         return FALSE;
363 }
364
365 static void
366 pdf_document_set_password (EvDocumentSecurity *document_security,
367                            const char         *password)
368 {
369         PdfDocument *document = PDF_DOCUMENT (document_security);
370
371         if (document->password)
372                 g_free (document->password);
373
374         document->password = g_strdup (password);
375 }
376
377 static gboolean
378 pdf_document_can_get_text (EvDocument *document)
379 {
380         return TRUE;
381 }
382
383 static EvDocumentInfo *
384 pdf_document_get_info (EvDocument *document)
385 {
386         EvDocumentInfo *info;
387         PopplerPageLayout layout;
388         PopplerPageMode mode;
389         PopplerViewerPreferences view_prefs;
390         PopplerPermissions permissions;
391
392         info = g_new0 (EvDocumentInfo, 1);
393
394         info->fields_mask = EV_DOCUMENT_INFO_TITLE |
395                             EV_DOCUMENT_INFO_FORMAT |
396                             EV_DOCUMENT_INFO_AUTHOR |
397                             EV_DOCUMENT_INFO_SUBJECT |
398                             EV_DOCUMENT_INFO_KEYWORDS |
399                             EV_DOCUMENT_INFO_LAYOUT |
400                             EV_DOCUMENT_INFO_START_MODE |
401                             EV_DOCUMENT_INFO_PERMISSIONS |
402                             EV_DOCUMENT_INFO_UI_HINTS |
403                             EV_DOCUMENT_INFO_CREATOR |
404                             EV_DOCUMENT_INFO_PRODUCER |
405                             EV_DOCUMENT_INFO_CREATION_DATE |
406                             EV_DOCUMENT_INFO_MOD_DATE |
407                             EV_DOCUMENT_INFO_LINEARIZED |
408                             EV_DOCUMENT_INFO_N_PAGES |
409                             EV_DOCUMENT_INFO_SECURITY;
410
411
412         g_object_get (PDF_DOCUMENT (document)->document,
413                       "title", &(info->title),
414                       "format", &(info->format),
415                       "author", &(info->author),
416                       "subject", &(info->subject),
417                       "keywords", &(info->keywords),
418                       "page-mode", &mode,
419                       "page-layout", &layout,
420                       "viewer-preferences", &view_prefs,
421                       "permissions", &permissions,
422                       "creator", &(info->creator),
423                       "producer", &(info->producer),
424                       "creation-date", &(info->creation_date),
425                       "mod-date", &(info->modified_date),
426                       "linearized", &(info->linearized),
427                       NULL);
428
429         switch (layout) {
430                 case POPPLER_PAGE_LAYOUT_SINGLE_PAGE:
431                         info->layout = EV_DOCUMENT_LAYOUT_SINGLE_PAGE;
432                         break;
433                 case POPPLER_PAGE_LAYOUT_ONE_COLUMN:
434                         info->layout = EV_DOCUMENT_LAYOUT_ONE_COLUMN;
435                         break;
436                 case POPPLER_PAGE_LAYOUT_TWO_COLUMN_LEFT:
437                         info->layout = EV_DOCUMENT_LAYOUT_TWO_COLUMN_LEFT;
438                         break;
439                 case POPPLER_PAGE_LAYOUT_TWO_COLUMN_RIGHT:
440                         info->layout = EV_DOCUMENT_LAYOUT_TWO_COLUMN_RIGHT;
441                 case POPPLER_PAGE_LAYOUT_TWO_PAGE_LEFT:
442                         info->layout = EV_DOCUMENT_LAYOUT_TWO_PAGE_LEFT;
443                         break;
444                 case POPPLER_PAGE_LAYOUT_TWO_PAGE_RIGHT:
445                         info->layout = EV_DOCUMENT_LAYOUT_TWO_PAGE_RIGHT;
446                         break;
447                 default:
448                         break;
449         }
450
451         switch (mode) {
452                 case POPPLER_PAGE_MODE_NONE:
453                         info->mode = EV_DOCUMENT_MODE_NONE;
454                         break;
455                 case POPPLER_PAGE_MODE_USE_THUMBS:
456                         info->mode = EV_DOCUMENT_MODE_USE_THUMBS;
457                         break;
458                 case POPPLER_PAGE_MODE_USE_OC:
459                         info->mode = EV_DOCUMENT_MODE_USE_OC;
460                         break;
461                 case POPPLER_PAGE_MODE_FULL_SCREEN:
462                         info->mode = EV_DOCUMENT_MODE_FULL_SCREEN;
463                         break;
464                 case POPPLER_PAGE_MODE_USE_ATTACHMENTS:
465                         info->mode = EV_DOCUMENT_MODE_USE_ATTACHMENTS;
466                 default:
467                         break;
468         }
469
470         info->ui_hints = 0;
471         if (view_prefs & POPPLER_VIEWER_PREFERENCES_HIDE_TOOLBAR) {
472                 info->ui_hints |= EV_DOCUMENT_UI_HINT_HIDE_TOOLBAR;
473         }
474         if (view_prefs & POPPLER_VIEWER_PREFERENCES_HIDE_MENUBAR) {
475                 info->ui_hints |= EV_DOCUMENT_UI_HINT_HIDE_MENUBAR;
476         }
477         if (view_prefs & POPPLER_VIEWER_PREFERENCES_HIDE_WINDOWUI) {
478                 info->ui_hints |= EV_DOCUMENT_UI_HINT_HIDE_WINDOWUI;
479         }
480         if (view_prefs & POPPLER_VIEWER_PREFERENCES_FIT_WINDOW) {
481                 info->ui_hints |= EV_DOCUMENT_UI_HINT_FIT_WINDOW;
482         }
483         if (view_prefs & POPPLER_VIEWER_PREFERENCES_CENTER_WINDOW) {
484                 info->ui_hints |= EV_DOCUMENT_UI_HINT_CENTER_WINDOW;
485         }
486         if (view_prefs & POPPLER_VIEWER_PREFERENCES_DISPLAY_DOC_TITLE) {
487                 info->ui_hints |= EV_DOCUMENT_UI_HINT_DISPLAY_DOC_TITLE;
488         }
489         if (view_prefs & POPPLER_VIEWER_PREFERENCES_DIRECTION_RTL) {
490                 info->ui_hints |=  EV_DOCUMENT_UI_HINT_DIRECTION_RTL;
491         }
492
493         info->permissions = 0;
494         if (permissions & POPPLER_PERMISSIONS_OK_TO_PRINT) {
495                 info->permissions |= EV_DOCUMENT_PERMISSIONS_OK_TO_PRINT;
496         }
497         if (permissions & POPPLER_PERMISSIONS_OK_TO_MODIFY) {
498                 info->permissions |= EV_DOCUMENT_PERMISSIONS_OK_TO_MODIFY;
499         }
500         if (permissions & POPPLER_PERMISSIONS_OK_TO_COPY) {
501                 info->permissions |= EV_DOCUMENT_PERMISSIONS_OK_TO_COPY;
502         }
503         if (permissions & POPPLER_PERMISSIONS_OK_TO_ADD_NOTES) {
504                 info->permissions |= EV_DOCUMENT_PERMISSIONS_OK_TO_ADD_NOTES;
505         }
506
507         info->n_pages = ev_document_get_n_pages (document);
508
509         if (ev_document_security_has_document_security (EV_DOCUMENT_SECURITY (document))) {
510                 /* translators: this is the document security state */
511                 info->security = g_strdup (_("Yes"));
512         } else {
513                 /* translators: this is the document security state */
514                 info->security = g_strdup (_("No"));
515         }
516
517         return info;
518 }
519
520 static char *
521 pdf_document_get_text (EvDocument *document, int page, EvRectangle *rect)
522 {
523         PdfDocument *pdf_document = PDF_DOCUMENT (document);
524         PopplerPage *poppler_page;
525         PopplerRectangle r;
526         double height;
527         char *text;
528         
529         poppler_page = poppler_document_get_page (pdf_document->document, page);
530         g_return_val_if_fail (poppler_page != NULL, NULL);
531
532         poppler_page_get_size (poppler_page, NULL, &height);
533         r.x1 = rect->x1;
534         r.y1 = height - rect->y2;
535         r.x2 = rect->x2;
536         r.y2 = height - rect->y1;
537
538         text = poppler_page_get_text (poppler_page, &r);
539
540         g_object_unref (poppler_page);
541
542         return text;
543 }
544
545 static void
546 pdf_document_document_iface_init (EvDocumentIface *iface)
547 {
548         iface->save = pdf_document_save;
549         iface->load = pdf_document_load;
550         iface->get_n_pages = pdf_document_get_n_pages;
551         iface->get_page_size = pdf_document_get_page_size;
552         iface->get_page_label = pdf_document_get_page_label;
553         iface->get_links = pdf_document_get_links;
554         iface->render_pixbuf = pdf_document_render_pixbuf;
555         iface->get_text = pdf_document_get_text;
556         iface->can_get_text = pdf_document_can_get_text;
557         iface->get_info = pdf_document_get_info;
558 };
559
560 static void
561 pdf_document_security_iface_init (EvDocumentSecurityIface *iface)
562 {
563         iface->has_document_security = pdf_document_has_document_security;
564         iface->set_password = pdf_document_set_password;
565 }
566
567 static gdouble
568 pdf_document_fonts_get_progress (EvDocumentFonts *document_fonts)
569 {
570         PdfDocument *pdf_document = PDF_DOCUMENT (document_fonts);
571         int n_pages;
572
573         n_pages = pdf_document_get_n_pages (EV_DOCUMENT (pdf_document));
574
575         return (double)pdf_document->fonts_scanned_pages / (double)n_pages;
576 }
577
578 static gboolean
579 pdf_document_fonts_scan (EvDocumentFonts *document_fonts,
580                          int              n_pages)
581 {
582         PdfDocument *pdf_document = PDF_DOCUMENT (document_fonts);
583         gboolean result;
584
585         g_return_val_if_fail (PDF_IS_DOCUMENT (document_fonts), FALSE);
586
587         if (pdf_document->font_info == NULL) { 
588                 pdf_document->font_info = poppler_font_info_new (pdf_document->document);
589         }
590
591         if (pdf_document->fonts_iter) {
592                 poppler_fonts_iter_free (pdf_document->fonts_iter);
593         }
594
595         pdf_document->fonts_scanned_pages += n_pages;
596
597         result = poppler_font_info_scan (pdf_document->font_info, n_pages,
598                                          &pdf_document->fonts_iter);
599         if (!result) {
600                 pdf_document->fonts_scanned_pages = 0;
601                 poppler_font_info_free (pdf_document->font_info);
602                 pdf_document->font_info = NULL; 
603         }
604
605         return result;
606 }
607
608 static const char *
609 font_type_to_string (PopplerFontType type)
610 {
611         switch (type)
612         {
613         case POPPLER_FONT_TYPE_TYPE1:
614                 return _("Type 1");
615         case POPPLER_FONT_TYPE_TYPE1C:
616                 return _("Type 1C");
617         case POPPLER_FONT_TYPE_TYPE3:
618                 return _("Type 3");
619         case POPPLER_FONT_TYPE_TRUETYPE:
620                 return _("TrueType");
621         case POPPLER_FONT_TYPE_CID_TYPE0:
622                 return _("Type 1 (CID)");
623         case POPPLER_FONT_TYPE_CID_TYPE0C:
624                 return _("Type 1C (CID)");
625         case POPPLER_FONT_TYPE_CID_TYPE2:
626                 return _("TrueType (CID)");
627         default:
628                 return _("Unknown font type");
629         }
630 }
631
632 static void
633 pdf_document_fonts_fill_model (EvDocumentFonts *document_fonts,
634                                GtkTreeModel    *model)
635 {
636         PdfDocument *pdf_document = PDF_DOCUMENT (document_fonts);
637         PopplerFontsIter *iter = pdf_document->fonts_iter;
638
639         g_return_if_fail (PDF_IS_DOCUMENT (document_fonts));
640
641         if (!iter)
642                 return;
643
644         do {
645                 GtkTreeIter list_iter;
646                 const char *name;
647                 const char *type;
648                 const char *embedded;
649                 char *details;
650                 
651                 name = poppler_fonts_iter_get_name (iter);
652
653                 if (name == NULL) {
654                         name = _("No name");
655                 }
656
657                 type = font_type_to_string (
658                         poppler_fonts_iter_get_font_type (iter));
659
660                 if (poppler_fonts_iter_is_embedded (iter)) {
661                         if (poppler_fonts_iter_is_subset (iter))
662                                 embedded = _("Embedded subset");
663                         else
664                                 embedded = _("Embedded");
665                 } else {
666                         embedded = _("Not embedded");
667                 }
668
669                 details = g_markup_printf_escaped ("%s\n%s", type, embedded);
670
671                 gtk_list_store_append (GTK_LIST_STORE (model), &list_iter);
672                 gtk_list_store_set (GTK_LIST_STORE (model), &list_iter,
673                                     EV_DOCUMENT_FONTS_COLUMN_NAME, name,
674                                     EV_DOCUMENT_FONTS_COLUMN_DETAILS, details,
675                                     -1);
676
677                 g_free (details);
678         } while (poppler_fonts_iter_next (iter));
679 }
680
681 static void
682 pdf_document_document_fonts_iface_init (EvDocumentFontsIface *iface)
683 {
684         iface->fill_model = pdf_document_fonts_fill_model;
685         iface->scan = pdf_document_fonts_scan;
686         iface->get_progress = pdf_document_fonts_get_progress;
687 }
688
689 static gboolean
690 pdf_document_links_has_document_links (EvDocumentLinks *document_links)
691 {
692         PdfDocument *pdf_document = PDF_DOCUMENT (document_links);
693         PopplerIndexIter *iter;
694
695         g_return_val_if_fail (PDF_IS_DOCUMENT (document_links), FALSE);
696
697         iter = poppler_index_iter_new (pdf_document->document);
698         if (iter == NULL)
699                 return FALSE;
700         poppler_index_iter_free (iter);
701
702         return TRUE;
703 }
704
705 static EvLink *
706 ev_link_from_dest (PopplerAction *action)
707 {
708         EvLink *link = NULL;
709         const char *unimplemented_dest = NULL;
710
711         switch (action->goto_dest.dest->type) {
712         case POPPLER_DEST_UNKNOWN:
713                 unimplemented_dest = "POPPLER_DEST_UNKNOWN";
714                 break;
715         case POPPLER_DEST_XYZ:
716                 link = ev_link_new_page_xyz (action->any.title,
717                                              action->goto_dest.dest->page_num - 1,
718                                              action->goto_dest.dest->left,
719                                              action->goto_dest.dest->top,
720                                              action->goto_dest.dest->zoom);
721                 break;
722         case POPPLER_DEST_FIT:
723                 unimplemented_dest = "POPPLER_DEST_FIT";
724                 break;
725         case POPPLER_DEST_FITH:
726                 unimplemented_dest = "POPPLER_DEST_FITH";
727                 break;
728         case POPPLER_DEST_FITV:
729                 unimplemented_dest = "POPPLER_DEST_FITV";
730                 break;
731         case POPPLER_DEST_FITR:
732                 unimplemented_dest = "POPPLER_DEST_FITR";
733                 break;
734         case POPPLER_DEST_FITB:
735                 unimplemented_dest = "POPPLER_DEST_FITB";
736                 break;
737         case POPPLER_DEST_FITBH:
738                 unimplemented_dest = "POPPLER_DEST_FITBH";
739                 break;
740         case POPPLER_DEST_FITBV:
741                 unimplemented_dest = "POPPLER_DEST_FITBV";
742                 break;
743         }
744
745         if (unimplemented_dest) {
746                 g_warning ("Unimplemented destination: %s, please post a bug report with a testcase.",
747                            unimplemented_dest);
748         }
749
750         if (link == NULL) {
751                 link = ev_link_new_page (action->any.title, action->goto_dest.dest->page_num - 1);
752         }
753
754         return link;
755 }
756
757 static EvLink *
758 ev_link_from_action (PopplerAction *action)
759 {
760         EvLink *link = NULL;
761         const char *title;
762         const char *unimplemented_action = NULL;
763
764         title = action->any.title;
765
766         switch (action->type) {
767         case POPPLER_ACTION_UNKNOWN:
768                 g_warning ("Unknown action"); 
769                 break;
770         case POPPLER_ACTION_GOTO_DEST:
771                 link = ev_link_from_dest (action);
772                 break;
773         case POPPLER_ACTION_GOTO_REMOTE:
774                 unimplemented_action = "POPPLER_ACTION_GOTO_REMOTE";
775                 break;
776         case POPPLER_ACTION_LAUNCH:
777                 unimplemented_action = "POPPLER_ACTION_LAUNCH";
778                 break;
779         case POPPLER_ACTION_URI:
780                 link = ev_link_new_external (title, action->uri.uri);
781                 break;
782         case POPPLER_ACTION_NAMED:
783                 unimplemented_action = "POPPLER_ACTION_NAMED";
784                 break;
785         case POPPLER_ACTION_MOVIE:
786                 unimplemented_action = "POPPLER_ACTION_MOVIE";
787                 break;
788         }
789
790         if (unimplemented_action) {
791                 g_warning ("Unimplemented action: %s, please post a bug report with a testcase.",
792                            unimplemented_action);
793         }
794
795         if (link == NULL) {
796                 link = ev_link_new_title (title);
797         }
798
799         return link;    
800 }
801
802 static void
803 build_tree (PdfDocument      *pdf_document,
804             GtkTreeModel     *model,
805             GtkTreeIter      *parent,
806             PopplerIndexIter *iter)
807 {
808
809         do {
810                 GtkTreeIter tree_iter;
811                 PopplerIndexIter *child;
812                 PopplerAction *action;
813                 EvLink *link;
814                 gboolean expand;
815                 
816                 action = poppler_index_iter_get_action (iter);
817                 expand = poppler_index_iter_is_open (iter);
818                 if (action) {
819                         gtk_tree_store_append (GTK_TREE_STORE (model), &tree_iter, parent);
820                         link = ev_link_from_action (action);
821                         poppler_action_free (action);
822
823                         gtk_tree_store_set (GTK_TREE_STORE (model), &tree_iter,
824                                             EV_DOCUMENT_LINKS_COLUMN_MARKUP, ev_link_get_title (link),
825                                             EV_DOCUMENT_LINKS_COLUMN_LINK, link,
826                                             EV_DOCUMENT_LINKS_COLUMN_EXPAND, expand,
827                                             -1);
828                         g_object_unref (link);
829                         child = poppler_index_iter_get_child (iter);
830                         if (child)
831                                 build_tree (pdf_document, model, &tree_iter, child);
832                         poppler_index_iter_free (child);
833                 }
834         } while (poppler_index_iter_next (iter));
835 }
836
837
838 static GtkTreeModel *
839 pdf_document_links_get_links_model (EvDocumentLinks *document_links)
840 {
841         PdfDocument *pdf_document = PDF_DOCUMENT (document_links);
842         GtkTreeModel *model = NULL;
843         PopplerIndexIter *iter;
844
845         g_return_val_if_fail (PDF_IS_DOCUMENT (document_links), NULL);
846
847         iter = poppler_index_iter_new (pdf_document->document);
848         /* Create the model if we have items*/
849         if (iter != NULL) {
850                 model = (GtkTreeModel *) gtk_tree_store_new (EV_DOCUMENT_LINKS_COLUMN_NUM_COLUMNS,
851                                                              G_TYPE_STRING,
852                                                              G_TYPE_OBJECT,
853                                                              G_TYPE_BOOLEAN);
854                 build_tree (pdf_document, model, NULL, iter);
855                 poppler_index_iter_free (iter);
856         }
857         
858         return model;
859 }
860
861 static void
862 pdf_document_document_links_iface_init (EvDocumentLinksIface *iface)
863 {
864         iface->has_document_links = pdf_document_links_has_document_links;
865         iface->get_links_model = pdf_document_links_get_links_model;
866 }
867
868 static GdkPixbuf *
869 make_thumbnail_for_size (PdfDocument   *pdf_document,
870                          gint           page,
871                          int            rotation,
872                          gint           size,
873                          gboolean       border)
874 {
875         PopplerPage *poppler_page;
876         GdkPixbuf *pixbuf, *sub_pixbuf;
877         int width, height;
878         double scale;
879         gdouble unscaled_width, unscaled_height;
880
881         poppler_page = poppler_document_get_page (pdf_document->document, page);
882         g_return_val_if_fail (poppler_page != NULL, NULL);
883
884         pdf_document_thumbnails_get_dimensions (EV_DOCUMENT_THUMBNAILS (pdf_document), page,
885                                                 size, &width, &height);
886         poppler_page_get_size (poppler_page, &unscaled_width, &unscaled_height);
887         scale = width / unscaled_width;
888
889         if (border) {
890                 pixbuf = ev_document_misc_get_thumbnail_frame (width, height, rotation, NULL);
891
892                 width = gdk_pixbuf_get_width (pixbuf);
893                 height = gdk_pixbuf_get_height (pixbuf);
894                 sub_pixbuf = gdk_pixbuf_new_subpixbuf (pixbuf,
895                                                        1, 1,
896                                                        width - 1, height - 1);
897         } else {
898                 /* rotate */
899                 if (rotation == 90 || rotation == 270) {
900                         int temp;
901                         temp = width;
902                         width = height;
903                         height = temp;
904                 }
905
906                 pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8,
907                                          width, height);
908                 gdk_pixbuf_fill (pixbuf, 0xffffffff);
909                 sub_pixbuf = gdk_pixbuf_new_subpixbuf (pixbuf,
910                                                        0, 0,
911                                                        width, height);
912         }
913
914         poppler_page_render_to_pixbuf (poppler_page, 0, 0,
915                                        width, height,
916                                        scale, rotation, sub_pixbuf);
917
918         g_object_unref (G_OBJECT (sub_pixbuf));
919
920         g_object_unref (poppler_page);
921         return pixbuf;
922 }
923
924 static GdkPixbuf *
925 pdf_document_thumbnails_get_thumbnail (EvDocumentThumbnails *document_thumbnails,
926                                        gint                  page,
927                                        gint                  rotation,
928                                        gint                  size,
929                                        gboolean              border)
930 {
931         PdfDocument *pdf_document;
932         PopplerPage *poppler_page;
933         GdkPixbuf *pixbuf;
934
935         pdf_document = PDF_DOCUMENT (document_thumbnails);
936
937         poppler_page = poppler_document_get_page (pdf_document->document, page);
938         g_return_val_if_fail (poppler_page != NULL, NULL);
939
940         pixbuf = poppler_page_get_thumbnail (poppler_page);
941         
942         if (pixbuf != NULL) {
943                 /* The document provides its own thumbnails. */
944                 if (border) {
945                         GdkPixbuf *real_pixbuf;
946
947                         real_pixbuf = ev_document_misc_get_thumbnail_frame (-1, -1, rotation, pixbuf);
948                         g_object_unref (pixbuf);
949                         pixbuf = real_pixbuf;
950                 }
951         } else {
952                 /* There is no provided thumbnail.  We need to make one. */
953                 pixbuf = make_thumbnail_for_size (pdf_document, page, rotation, size, border);
954         }
955
956         g_object_unref (poppler_page);
957         
958         return pixbuf;
959 }
960
961 static void
962 pdf_document_thumbnails_get_dimensions (EvDocumentThumbnails *document_thumbnails,
963                                         gint                  page,
964                                         gint                  size,
965                                         gint                 *width,
966                                         gint                 *height)
967 {
968         PdfDocument *pdf_document;
969         PopplerPage *poppler_page;
970         gint has_thumb;
971         
972         pdf_document = PDF_DOCUMENT (document_thumbnails);
973         poppler_page = poppler_document_get_page (pdf_document->document, page);
974
975         g_return_if_fail (width != NULL);
976         g_return_if_fail (height != NULL);
977         g_return_if_fail (poppler_page != NULL);
978
979         has_thumb = poppler_page_get_thumbnail_size (poppler_page, width, height);
980
981         if (!has_thumb) {
982                 double page_width, page_height;
983
984                 poppler_page_get_size (poppler_page, &page_width, &page_height);
985                 if (page_width > page_height) {
986                         *width = size;
987                         *height = (int) (size * page_height / page_width);
988                 } else {
989                         *width = (int) (size * page_width / page_height);
990                         *height = size;
991                 }
992         }
993         g_object_unref (poppler_page);
994 }
995
996 static void
997 pdf_document_document_thumbnails_iface_init (EvDocumentThumbnailsIface *iface)
998 {
999         iface->get_thumbnail = pdf_document_thumbnails_get_thumbnail;
1000         iface->get_dimensions = pdf_document_thumbnails_get_dimensions;
1001 }
1002
1003
1004 static gboolean
1005 pdf_document_search_idle_callback (void *data)
1006 {
1007         PdfDocumentSearch *search = (PdfDocumentSearch*) data;
1008         PdfDocument *pdf_document = search->document;
1009         int n_pages;
1010         GList *matches;
1011         PopplerPage *page;
1012
1013         page = poppler_document_get_page (search->document->document,
1014                                           search->search_page);
1015
1016         ev_document_doc_mutex_lock ();
1017         matches = poppler_page_find_text (page, search->text);
1018         ev_document_doc_mutex_unlock ();
1019
1020         g_object_unref (page);
1021
1022         search->pages[search->search_page] = matches;
1023         ev_document_find_changed (EV_DOCUMENT_FIND (pdf_document),
1024                                   search->search_page);
1025
1026         n_pages = pdf_document_get_n_pages (EV_DOCUMENT (search->document));
1027         search->search_page += 1;
1028         if (search->search_page == n_pages) {
1029                 /* wrap around */
1030                 search->search_page = 0;
1031         }
1032
1033         if (search->search_page != search->start_page) {
1034                 return TRUE;
1035         }
1036
1037         /* We're done. */
1038         search->idle = 0; /* will return FALSE to remove */
1039         return FALSE;
1040 }
1041
1042
1043 static PdfDocumentSearch *
1044 pdf_document_search_new (PdfDocument *pdf_document,
1045                          int          start_page,
1046                          const char  *text)
1047 {
1048         PdfDocumentSearch *search;
1049         int n_pages;
1050         int i;
1051
1052         n_pages = pdf_document_get_n_pages (EV_DOCUMENT (pdf_document));
1053
1054         search = g_new0 (PdfDocumentSearch, 1);
1055
1056         search->text = g_strdup (text);
1057         search->pages = g_new0 (GList *, n_pages);
1058         for (i = 0; i < n_pages; i++) {
1059                 search->pages[i] = NULL;
1060         }
1061
1062         search->document = pdf_document;
1063
1064         /* We add at low priority so the progress bar repaints */
1065         search->idle = g_idle_add_full (G_PRIORITY_LOW,
1066                                         pdf_document_search_idle_callback,
1067                                         search,
1068                                         NULL);
1069
1070         search->start_page = start_page;
1071         search->search_page = start_page;
1072
1073         return search;
1074 }
1075
1076 static void
1077 pdf_document_find_begin (EvDocumentFind   *document,
1078                          int               page,
1079                          const char       *search_string,
1080                          gboolean          case_sensitive)
1081 {
1082         PdfDocument *pdf_document = PDF_DOCUMENT (document);
1083
1084         /* FIXME handle case_sensitive (right now XPDF
1085          * code is always case insensitive for ASCII
1086          * and case sensitive for all other languaages)
1087          */
1088
1089         if (pdf_document->search &&
1090             strcmp (search_string, pdf_document->search->text) == 0)
1091                 return;
1092
1093         if (pdf_document->search)
1094                 pdf_document_search_free (pdf_document->search);
1095
1096         pdf_document->search = pdf_document_search_new (pdf_document,
1097                                                         page,
1098                                                         search_string);
1099 }
1100
1101 int
1102 pdf_document_find_get_n_results (EvDocumentFind *document_find, int page)
1103 {
1104         PdfDocumentSearch *search = PDF_DOCUMENT (document_find)->search;
1105
1106         if (search) {
1107                 return g_list_length (search->pages[page]);
1108         } else {
1109                 return 0;
1110         }
1111 }
1112
1113 gboolean
1114 pdf_document_find_get_result (EvDocumentFind *document_find,
1115                               int             page,
1116                               int             n_result,
1117                               EvRectangle    *rectangle)
1118 {
1119         PdfDocument *pdf_document = PDF_DOCUMENT (document_find);
1120         PdfDocumentSearch *search = pdf_document->search;
1121         PopplerPage *poppler_page;
1122         PopplerRectangle *r;
1123         double height;
1124
1125         if (search == NULL)
1126                 return FALSE;
1127
1128         r = (PopplerRectangle *) g_list_nth_data (search->pages[page],
1129                                                   n_result);
1130         if (r == NULL)
1131                 return FALSE;
1132
1133         poppler_page = poppler_document_get_page (pdf_document->document, page);
1134         poppler_page_get_size (poppler_page, NULL, &height);
1135         rectangle->x1 = r->x1;
1136         rectangle->y1 = height - r->y2;
1137         rectangle->x2 = r->x2;
1138         rectangle->y2 = height - r->y1;
1139         g_object_unref (poppler_page);
1140                 
1141         return TRUE;
1142 }
1143
1144 int
1145 pdf_document_find_page_has_results (EvDocumentFind *document_find,
1146                                     int             page)
1147 {
1148         PdfDocumentSearch *search = PDF_DOCUMENT (document_find)->search;
1149
1150         g_return_val_if_fail (search != NULL, FALSE);
1151
1152         return search->pages[page] != NULL;
1153 }
1154
1155 double
1156 pdf_document_find_get_progress (EvDocumentFind *document_find)
1157 {
1158         PdfDocumentSearch *search;
1159         int n_pages, pages_done;
1160
1161         search = PDF_DOCUMENT (document_find)->search;
1162
1163         if (search == NULL) {
1164                 return 0;
1165         }
1166
1167         n_pages = pdf_document_get_n_pages (EV_DOCUMENT (document_find));
1168         if (search->search_page > search->start_page) {
1169                 pages_done = search->search_page - search->start_page + 1;
1170         } else if (search->search_page == search->start_page) {
1171                 pages_done = n_pages;
1172         } else {
1173                 pages_done = n_pages - search->start_page + search->search_page;
1174         }
1175
1176         return pages_done / (double) n_pages;
1177 }
1178
1179 static void
1180 pdf_document_find_cancel (EvDocumentFind *document)
1181 {
1182         PdfDocument *pdf_document = PDF_DOCUMENT (document);
1183
1184         if (pdf_document->search) {
1185                 pdf_document_search_free (pdf_document->search);
1186                 pdf_document->search = NULL;
1187         }
1188 }
1189
1190 static void
1191 pdf_document_find_iface_init (EvDocumentFindIface *iface)
1192 {
1193         iface->begin = pdf_document_find_begin;
1194         iface->get_n_results = pdf_document_find_get_n_results;
1195         iface->get_result = pdf_document_find_get_result;
1196         iface->page_has_results = pdf_document_find_page_has_results;
1197         iface->get_progress = pdf_document_find_get_progress;
1198         iface->cancel = pdf_document_find_cancel;
1199 }
1200
1201 static void
1202 pdf_document_ps_exporter_begin (EvPSExporter *exporter, const char *filename,
1203                                 int first_page, int last_page,
1204                                 double width, double height, gboolean duplex)
1205 {
1206         PdfDocument *pdf_document = PDF_DOCUMENT (exporter);
1207         
1208         pdf_document->ps_file = poppler_ps_file_new (pdf_document->document, filename,
1209                                                      first_page,
1210                                                      last_page - first_page + 1);
1211         poppler_ps_file_set_paper_size (pdf_document->ps_file, width, height);
1212         poppler_ps_file_set_duplex (pdf_document->ps_file, duplex);
1213 }
1214
1215 static void
1216 pdf_document_ps_exporter_do_page (EvPSExporter *exporter, EvRenderContext *rc)
1217 {
1218         PdfDocument *pdf_document = PDF_DOCUMENT (exporter);
1219         PopplerPage *poppler_page;
1220
1221         g_return_if_fail (pdf_document->ps_file != NULL);
1222
1223         poppler_page = poppler_document_get_page (pdf_document->document, rc->page);
1224         poppler_page_render_to_ps (poppler_page, pdf_document->ps_file);
1225         g_object_unref (poppler_page);
1226 }
1227
1228 static void
1229 pdf_document_ps_exporter_end (EvPSExporter *exporter)
1230 {
1231         PdfDocument *pdf_document = PDF_DOCUMENT (exporter);
1232
1233         poppler_ps_file_free (pdf_document->ps_file);
1234         pdf_document->ps_file = NULL;
1235 }
1236
1237 static void
1238 pdf_document_ps_exporter_iface_init (EvPSExporterIface *iface)
1239 {
1240         iface->begin = pdf_document_ps_exporter_begin;
1241         iface->do_page = pdf_document_ps_exporter_do_page;
1242         iface->end = pdf_document_ps_exporter_end;
1243 }
1244
1245
1246 void
1247 pdf_selection_render_selection (EvSelection      *selection,
1248                                 EvRenderContext  *rc,
1249                                 GdkPixbuf       **pixbuf,
1250                                 EvRectangle      *points,
1251                                 EvRectangle      *old_points,
1252                                 GdkColor        *text,
1253                                 GdkColor        *base)
1254 {
1255         PdfDocument *pdf_document;
1256         double width_points, height_points;
1257         gint width, height;
1258
1259         pdf_document = PDF_DOCUMENT (selection);
1260         set_rc_data (pdf_document, rc);
1261
1262         poppler_page_get_size (POPPLER_PAGE (rc->data), &width_points, &height_points);
1263         width = (int) ((width_points * rc->scale) + 0.5);
1264         height = (int) ((height_points * rc->scale) + 0.5);
1265
1266         if (*pixbuf == NULL) {
1267                 * pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB,
1268                                            TRUE, 8,
1269                                            width, height);
1270         }
1271         
1272         poppler_page_render_selection (POPPLER_PAGE (rc->data),
1273                                        rc->scale, rc->rotation, *pixbuf,
1274                                        (PopplerRectangle *)points,
1275                                        (PopplerRectangle *)old_points,
1276                                        text,
1277                                        base);
1278 }
1279
1280
1281 GdkRegion *
1282 pdf_selection_get_selection_region (EvSelection     *selection,
1283                                     EvRenderContext *rc,
1284                                     EvRectangle     *points)
1285 {
1286         PdfDocument *pdf_document;
1287         GdkRegion *retval;
1288
1289         pdf_document = PDF_DOCUMENT (selection);
1290
1291         set_rc_data (pdf_document, rc);
1292
1293         retval = poppler_page_get_selection_region ((PopplerPage *)rc->data, rc->scale, (PopplerRectangle *) points);
1294
1295         return retval;
1296 }
1297
1298 GdkRegion *
1299 pdf_selection_get_selection_map (EvSelection     *selection,
1300                                  EvRenderContext *rc)
1301 {
1302         PdfDocument *pdf_document;
1303         PopplerPage *poppler_page;
1304         PopplerRectangle points;
1305         GdkRegion *retval;
1306
1307         pdf_document = PDF_DOCUMENT (selection);
1308         poppler_page = poppler_document_get_page (pdf_document->document,
1309                                                   rc->page);
1310
1311         points.x1 = 0.0;
1312         points.y1 = 0.0;
1313         poppler_page_get_size (poppler_page, &(points.x2), &(points.y2));
1314         retval = poppler_page_get_selection_region (poppler_page, 1.0, &points);
1315         g_object_unref (poppler_page);
1316
1317         return retval;
1318 }
1319
1320 static void
1321 pdf_selection_iface_init (EvSelectionIface *iface)
1322 {
1323         iface->render_selection = pdf_selection_render_selection;
1324         iface->get_selection_region = pdf_selection_get_selection_region;
1325         iface->get_selection_map = pdf_selection_get_selection_map;
1326 }
1327
1328 PdfDocument *
1329 pdf_document_new (void)
1330 {
1331         return PDF_DOCUMENT (g_object_new (PDF_TYPE_DOCUMENT, NULL));
1332 }