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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                 link = ev_link_new_page_fit (action->any.title,
724                                              action->goto_dest.dest->page_num - 1);
725                 break;
726         case POPPLER_DEST_FITH:
727                 link = ev_link_new_page_fith (action->any.title,
728                                               action->goto_dest.dest->page_num - 1,
729                                               action->goto_dest.dest->top);
730                 break;
731         case POPPLER_DEST_FITV:
732                 unimplemented_dest = "POPPLER_DEST_FITV";
733                 break;
734         case POPPLER_DEST_FITR:
735                 unimplemented_dest = "POPPLER_DEST_FITR";
736                 break;
737         case POPPLER_DEST_FITB:
738                 unimplemented_dest = "POPPLER_DEST_FITB";
739                 break;
740         case POPPLER_DEST_FITBH:
741                 unimplemented_dest = "POPPLER_DEST_FITBH";
742                 break;
743         case POPPLER_DEST_FITBV:
744                 unimplemented_dest = "POPPLER_DEST_FITBV";
745                 break;
746         }
747
748         if (unimplemented_dest) {
749                 g_warning ("Unimplemented destination: %s, please post a bug report with a testcase.",
750                            unimplemented_dest);
751         }
752
753         if (link == NULL) {
754                 link = ev_link_new_page (action->any.title, action->goto_dest.dest->page_num - 1);
755         }
756
757         return link;
758 }
759
760 static EvLink *
761 ev_link_from_action (PopplerAction *action)
762 {
763         EvLink *link = NULL;
764         const char *title;
765         const char *unimplemented_action = NULL;
766
767         title = action->any.title;
768
769         switch (action->type) {
770         case POPPLER_ACTION_UNKNOWN:
771                 g_warning ("Unknown action"); 
772                 break;
773         case POPPLER_ACTION_GOTO_DEST:
774                 link = ev_link_from_dest (action);
775                 break;
776         case POPPLER_ACTION_GOTO_REMOTE:
777                 unimplemented_action = "POPPLER_ACTION_GOTO_REMOTE";
778                 break;
779         case POPPLER_ACTION_LAUNCH:
780                 unimplemented_action = "POPPLER_ACTION_LAUNCH";
781                 break;
782         case POPPLER_ACTION_URI:
783                 link = ev_link_new_external (title, action->uri.uri);
784                 break;
785         case POPPLER_ACTION_NAMED:
786                 unimplemented_action = "POPPLER_ACTION_NAMED";
787                 break;
788         case POPPLER_ACTION_MOVIE:
789                 unimplemented_action = "POPPLER_ACTION_MOVIE";
790                 break;
791         }
792
793         if (unimplemented_action) {
794                 g_warning ("Unimplemented action: %s, please post a bug report with a testcase.",
795                            unimplemented_action);
796         }
797
798         if (link == NULL) {
799                 link = ev_link_new_title (title);
800         }
801
802         return link;    
803 }
804
805 static void
806 build_tree (PdfDocument      *pdf_document,
807             GtkTreeModel     *model,
808             GtkTreeIter      *parent,
809             PopplerIndexIter *iter)
810 {
811
812         do {
813                 GtkTreeIter tree_iter;
814                 PopplerIndexIter *child;
815                 PopplerAction *action;
816                 EvLink *link;
817                 gboolean expand;
818                 
819                 action = poppler_index_iter_get_action (iter);
820                 expand = poppler_index_iter_is_open (iter);
821                 if (action) {
822                         gtk_tree_store_append (GTK_TREE_STORE (model), &tree_iter, parent);
823                         link = ev_link_from_action (action);
824                         poppler_action_free (action);
825
826                         gtk_tree_store_set (GTK_TREE_STORE (model), &tree_iter,
827                                             EV_DOCUMENT_LINKS_COLUMN_MARKUP, ev_link_get_title (link),
828                                             EV_DOCUMENT_LINKS_COLUMN_LINK, link,
829                                             EV_DOCUMENT_LINKS_COLUMN_EXPAND, expand,
830                                             -1);
831                         g_object_unref (link);
832                         child = poppler_index_iter_get_child (iter);
833                         if (child)
834                                 build_tree (pdf_document, model, &tree_iter, child);
835                         poppler_index_iter_free (child);
836                 }
837         } while (poppler_index_iter_next (iter));
838 }
839
840
841 static GtkTreeModel *
842 pdf_document_links_get_links_model (EvDocumentLinks *document_links)
843 {
844         PdfDocument *pdf_document = PDF_DOCUMENT (document_links);
845         GtkTreeModel *model = NULL;
846         PopplerIndexIter *iter;
847
848         g_return_val_if_fail (PDF_IS_DOCUMENT (document_links), NULL);
849
850         iter = poppler_index_iter_new (pdf_document->document);
851         /* Create the model if we have items*/
852         if (iter != NULL) {
853                 model = (GtkTreeModel *) gtk_tree_store_new (EV_DOCUMENT_LINKS_COLUMN_NUM_COLUMNS,
854                                                              G_TYPE_STRING,
855                                                              G_TYPE_OBJECT,
856                                                              G_TYPE_BOOLEAN);
857                 build_tree (pdf_document, model, NULL, iter);
858                 poppler_index_iter_free (iter);
859         }
860         
861         return model;
862 }
863
864 static void
865 pdf_document_document_links_iface_init (EvDocumentLinksIface *iface)
866 {
867         iface->has_document_links = pdf_document_links_has_document_links;
868         iface->get_links_model = pdf_document_links_get_links_model;
869 }
870
871 static GdkPixbuf *
872 make_thumbnail_for_size (PdfDocument   *pdf_document,
873                          gint           page,
874                          int            rotation,
875                          gint           size,
876                          gboolean       border)
877 {
878         PopplerPage *poppler_page;
879         GdkPixbuf *pixbuf, *border_pixbuf;
880         int width, height;
881         double scale;
882         gdouble unscaled_width, unscaled_height;
883
884         poppler_page = poppler_document_get_page (pdf_document->document, page);
885         g_return_val_if_fail (poppler_page != NULL, NULL);
886
887         pdf_document_thumbnails_get_dimensions (EV_DOCUMENT_THUMBNAILS (pdf_document), page,
888                                                 size, &width, &height);
889         poppler_page_get_size (poppler_page, &unscaled_width, &unscaled_height);
890         scale = width / unscaled_width;
891
892         /* rotate */
893         if (rotation == 90 || rotation == 270) {
894                 int temp;
895                 temp = width;
896                 width = height;
897                 height = temp;
898         }
899
900         pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8,
901                                  width, height);
902         gdk_pixbuf_fill (pixbuf, 0xffffffff);
903
904         poppler_page_render_to_pixbuf (poppler_page, 0, 0,
905                                        width, height,
906                                        scale, rotation, pixbuf);
907        
908         if (border) {           
909                 border_pixbuf = ev_document_misc_get_thumbnail_frame (-1, -1, rotation, pixbuf);
910                 g_object_unref (pixbuf);
911                 pixbuf = border_pixbuf;
912         }               
913
914         g_object_unref (poppler_page);
915
916         return pixbuf;
917 }
918
919 static GdkPixbuf *
920 pdf_document_thumbnails_get_thumbnail (EvDocumentThumbnails *document_thumbnails,
921                                        gint                  page,
922                                        gint                  rotation,
923                                        gint                  size,
924                                        gboolean              border)
925 {
926         PdfDocument *pdf_document;
927         PopplerPage *poppler_page;
928         GdkPixbuf *pixbuf;
929
930         pdf_document = PDF_DOCUMENT (document_thumbnails);
931
932         poppler_page = poppler_document_get_page (pdf_document->document, page);
933         g_return_val_if_fail (poppler_page != NULL, NULL);
934
935         pixbuf = poppler_page_get_thumbnail (poppler_page);
936         
937         if (pixbuf != NULL) {
938                 /* The document provides its own thumbnails. */
939                 if (border) {
940                         GdkPixbuf *real_pixbuf;
941
942                         real_pixbuf = ev_document_misc_get_thumbnail_frame (-1, -1, rotation, pixbuf);
943                         g_object_unref (pixbuf);
944                         pixbuf = real_pixbuf;
945                 }
946         } else {
947                 /* There is no provided thumbnail.  We need to make one. */
948                 pixbuf = make_thumbnail_for_size (pdf_document, page, rotation, size, border);
949         }
950
951         g_object_unref (poppler_page);
952         
953         return pixbuf;
954 }
955
956 static void
957 pdf_document_thumbnails_get_dimensions (EvDocumentThumbnails *document_thumbnails,
958                                         gint                  page,
959                                         gint                  size,
960                                         gint                 *width,
961                                         gint                 *height)
962 {
963         PdfDocument *pdf_document;
964         PopplerPage *poppler_page;
965         gint has_thumb;
966         
967         pdf_document = PDF_DOCUMENT (document_thumbnails);
968         poppler_page = poppler_document_get_page (pdf_document->document, page);
969
970         g_return_if_fail (width != NULL);
971         g_return_if_fail (height != NULL);
972         g_return_if_fail (poppler_page != NULL);
973
974         has_thumb = poppler_page_get_thumbnail_size (poppler_page, width, height);
975
976         if (!has_thumb) {
977                 double page_width, page_height;
978
979                 poppler_page_get_size (poppler_page, &page_width, &page_height);
980                 if (page_width > page_height) {
981                         *width = size;
982                         *height = (int) (size * page_height / page_width);
983                 } else {
984                         *width = (int) (size * page_width / page_height);
985                         *height = size;
986                 }
987         }
988         g_object_unref (poppler_page);
989 }
990
991 static void
992 pdf_document_document_thumbnails_iface_init (EvDocumentThumbnailsIface *iface)
993 {
994         iface->get_thumbnail = pdf_document_thumbnails_get_thumbnail;
995         iface->get_dimensions = pdf_document_thumbnails_get_dimensions;
996 }
997
998
999 static gboolean
1000 pdf_document_search_idle_callback (void *data)
1001 {
1002         PdfDocumentSearch *search = (PdfDocumentSearch*) data;
1003         PdfDocument *pdf_document = search->document;
1004         int n_pages;
1005         GList *matches;
1006         PopplerPage *page;
1007
1008         page = poppler_document_get_page (search->document->document,
1009                                           search->search_page);
1010
1011         ev_document_doc_mutex_lock ();
1012         matches = poppler_page_find_text (page, search->text);
1013         ev_document_doc_mutex_unlock ();
1014
1015         g_object_unref (page);
1016
1017         search->pages[search->search_page] = matches;
1018         ev_document_find_changed (EV_DOCUMENT_FIND (pdf_document),
1019                                   search->search_page);
1020
1021         n_pages = pdf_document_get_n_pages (EV_DOCUMENT (search->document));
1022         search->search_page += 1;
1023         if (search->search_page == n_pages) {
1024                 /* wrap around */
1025                 search->search_page = 0;
1026         }
1027
1028         if (search->search_page != search->start_page) {
1029                 return TRUE;
1030         }
1031
1032         /* We're done. */
1033         search->idle = 0; /* will return FALSE to remove */
1034         return FALSE;
1035 }
1036
1037
1038 static PdfDocumentSearch *
1039 pdf_document_search_new (PdfDocument *pdf_document,
1040                          int          start_page,
1041                          const char  *text)
1042 {
1043         PdfDocumentSearch *search;
1044         int n_pages;
1045         int i;
1046
1047         n_pages = pdf_document_get_n_pages (EV_DOCUMENT (pdf_document));
1048
1049         search = g_new0 (PdfDocumentSearch, 1);
1050
1051         search->text = g_strdup (text);
1052         search->pages = g_new0 (GList *, n_pages);
1053         for (i = 0; i < n_pages; i++) {
1054                 search->pages[i] = NULL;
1055         }
1056
1057         search->document = pdf_document;
1058
1059         /* We add at low priority so the progress bar repaints */
1060         search->idle = g_idle_add_full (G_PRIORITY_LOW,
1061                                         pdf_document_search_idle_callback,
1062                                         search,
1063                                         NULL);
1064
1065         search->start_page = start_page;
1066         search->search_page = start_page;
1067
1068         return search;
1069 }
1070
1071 static void
1072 pdf_document_find_begin (EvDocumentFind   *document,
1073                          int               page,
1074                          const char       *search_string,
1075                          gboolean          case_sensitive)
1076 {
1077         PdfDocument *pdf_document = PDF_DOCUMENT (document);
1078
1079         /* FIXME handle case_sensitive (right now XPDF
1080          * code is always case insensitive for ASCII
1081          * and case sensitive for all other languaages)
1082          */
1083
1084         if (pdf_document->search &&
1085             strcmp (search_string, pdf_document->search->text) == 0)
1086                 return;
1087
1088         if (pdf_document->search)
1089                 pdf_document_search_free (pdf_document->search);
1090
1091         pdf_document->search = pdf_document_search_new (pdf_document,
1092                                                         page,
1093                                                         search_string);
1094 }
1095
1096 int
1097 pdf_document_find_get_n_results (EvDocumentFind *document_find, int page)
1098 {
1099         PdfDocumentSearch *search = PDF_DOCUMENT (document_find)->search;
1100
1101         if (search) {
1102                 return g_list_length (search->pages[page]);
1103         } else {
1104                 return 0;
1105         }
1106 }
1107
1108 gboolean
1109 pdf_document_find_get_result (EvDocumentFind *document_find,
1110                               int             page,
1111                               int             n_result,
1112                               EvRectangle    *rectangle)
1113 {
1114         PdfDocument *pdf_document = PDF_DOCUMENT (document_find);
1115         PdfDocumentSearch *search = pdf_document->search;
1116         PopplerPage *poppler_page;
1117         PopplerRectangle *r;
1118         double height;
1119
1120         if (search == NULL)
1121                 return FALSE;
1122
1123         r = (PopplerRectangle *) g_list_nth_data (search->pages[page],
1124                                                   n_result);
1125         if (r == NULL)
1126                 return FALSE;
1127
1128         poppler_page = poppler_document_get_page (pdf_document->document, page);
1129         poppler_page_get_size (poppler_page, NULL, &height);
1130         rectangle->x1 = r->x1;
1131         rectangle->y1 = height - r->y2;
1132         rectangle->x2 = r->x2;
1133         rectangle->y2 = height - r->y1;
1134         g_object_unref (poppler_page);
1135                 
1136         return TRUE;
1137 }
1138
1139 int
1140 pdf_document_find_page_has_results (EvDocumentFind *document_find,
1141                                     int             page)
1142 {
1143         PdfDocumentSearch *search = PDF_DOCUMENT (document_find)->search;
1144
1145         return search && search->pages[page] != NULL;
1146 }
1147
1148 double
1149 pdf_document_find_get_progress (EvDocumentFind *document_find)
1150 {
1151         PdfDocumentSearch *search;
1152         int n_pages, pages_done;
1153
1154         search = PDF_DOCUMENT (document_find)->search;
1155
1156         if (search == NULL) {
1157                 return 0;
1158         }
1159
1160         n_pages = pdf_document_get_n_pages (EV_DOCUMENT (document_find));
1161         if (search->search_page > search->start_page) {
1162                 pages_done = search->search_page - search->start_page + 1;
1163         } else if (search->search_page == search->start_page) {
1164                 pages_done = n_pages;
1165         } else {
1166                 pages_done = n_pages - search->start_page + search->search_page;
1167         }
1168
1169         return pages_done / (double) n_pages;
1170 }
1171
1172 static void
1173 pdf_document_find_cancel (EvDocumentFind *document)
1174 {
1175         PdfDocument *pdf_document = PDF_DOCUMENT (document);
1176
1177         if (pdf_document->search) {
1178                 pdf_document_search_free (pdf_document->search);
1179                 pdf_document->search = NULL;
1180         }
1181 }
1182
1183 static void
1184 pdf_document_find_iface_init (EvDocumentFindIface *iface)
1185 {
1186         iface->begin = pdf_document_find_begin;
1187         iface->get_n_results = pdf_document_find_get_n_results;
1188         iface->get_result = pdf_document_find_get_result;
1189         iface->page_has_results = pdf_document_find_page_has_results;
1190         iface->get_progress = pdf_document_find_get_progress;
1191         iface->cancel = pdf_document_find_cancel;
1192 }
1193
1194 static void
1195 pdf_document_ps_exporter_begin (EvPSExporter *exporter, const char *filename,
1196                                 int first_page, int last_page,
1197                                 double width, double height, gboolean duplex)
1198 {
1199         PdfDocument *pdf_document = PDF_DOCUMENT (exporter);
1200         
1201         pdf_document->ps_file = poppler_ps_file_new (pdf_document->document, filename,
1202                                                      first_page,
1203                                                      last_page - first_page + 1);
1204         poppler_ps_file_set_paper_size (pdf_document->ps_file, width, height);
1205         poppler_ps_file_set_duplex (pdf_document->ps_file, duplex);
1206 }
1207
1208 static void
1209 pdf_document_ps_exporter_do_page (EvPSExporter *exporter, EvRenderContext *rc)
1210 {
1211         PdfDocument *pdf_document = PDF_DOCUMENT (exporter);
1212         PopplerPage *poppler_page;
1213
1214         g_return_if_fail (pdf_document->ps_file != NULL);
1215
1216         poppler_page = poppler_document_get_page (pdf_document->document, rc->page);
1217         poppler_page_render_to_ps (poppler_page, pdf_document->ps_file);
1218         g_object_unref (poppler_page);
1219 }
1220
1221 static void
1222 pdf_document_ps_exporter_end (EvPSExporter *exporter)
1223 {
1224         PdfDocument *pdf_document = PDF_DOCUMENT (exporter);
1225
1226         poppler_ps_file_free (pdf_document->ps_file);
1227         pdf_document->ps_file = NULL;
1228 }
1229
1230 static void
1231 pdf_document_ps_exporter_iface_init (EvPSExporterIface *iface)
1232 {
1233         iface->begin = pdf_document_ps_exporter_begin;
1234         iface->do_page = pdf_document_ps_exporter_do_page;
1235         iface->end = pdf_document_ps_exporter_end;
1236 }
1237
1238
1239 void
1240 pdf_selection_render_selection (EvSelection      *selection,
1241                                 EvRenderContext  *rc,
1242                                 GdkPixbuf       **pixbuf,
1243                                 EvRectangle      *points,
1244                                 EvRectangle      *old_points,
1245                                 GdkColor        *text,
1246                                 GdkColor        *base)
1247 {
1248         PdfDocument *pdf_document;
1249         double width_points, height_points;
1250         gint width, height;
1251
1252         pdf_document = PDF_DOCUMENT (selection);
1253         set_rc_data (pdf_document, rc);
1254
1255         poppler_page_get_size (POPPLER_PAGE (rc->data), &width_points, &height_points);
1256         width = (int) ((width_points * rc->scale) + 0.5);
1257         height = (int) ((height_points * rc->scale) + 0.5);
1258
1259         if (*pixbuf == NULL) {
1260                 * pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB,
1261                                            TRUE, 8,
1262                                            width, height);
1263         }
1264         
1265         poppler_page_render_selection (POPPLER_PAGE (rc->data),
1266                                        rc->scale, rc->rotation, *pixbuf,
1267                                        (PopplerRectangle *)points,
1268                                        (PopplerRectangle *)old_points,
1269                                        text,
1270                                        base);
1271 }
1272
1273
1274 GdkRegion *
1275 pdf_selection_get_selection_region (EvSelection     *selection,
1276                                     EvRenderContext *rc,
1277                                     EvRectangle     *points)
1278 {
1279         PdfDocument *pdf_document;
1280         GdkRegion *retval;
1281
1282         pdf_document = PDF_DOCUMENT (selection);
1283
1284         set_rc_data (pdf_document, rc);
1285
1286         retval = poppler_page_get_selection_region ((PopplerPage *)rc->data, rc->scale, (PopplerRectangle *) points);
1287
1288         return retval;
1289 }
1290
1291 GdkRegion *
1292 pdf_selection_get_selection_map (EvSelection     *selection,
1293                                  EvRenderContext *rc)
1294 {
1295         PdfDocument *pdf_document;
1296         PopplerPage *poppler_page;
1297         PopplerRectangle points;
1298         GdkRegion *retval;
1299
1300         pdf_document = PDF_DOCUMENT (selection);
1301         poppler_page = poppler_document_get_page (pdf_document->document,
1302                                                   rc->page);
1303
1304         points.x1 = 0.0;
1305         points.y1 = 0.0;
1306         poppler_page_get_size (poppler_page, &(points.x2), &(points.y2));
1307         retval = poppler_page_get_selection_region (poppler_page, 1.0, &points);
1308         g_object_unref (poppler_page);
1309
1310         return retval;
1311 }
1312
1313 static void
1314 pdf_selection_iface_init (EvSelectionIface *iface)
1315 {
1316         iface->render_selection = pdf_selection_render_selection;
1317         iface->get_selection_region = pdf_selection_get_selection_region;
1318         iface->get_selection_map = pdf_selection_get_selection_map;
1319 }
1320
1321 PdfDocument *
1322 pdf_document_new (void)
1323 {
1324         return PDF_DOCUMENT (g_object_new (PDF_TYPE_DOCUMENT, NULL));
1325 }