1 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8; c-indent-level: 8 -*- */
3 * Copyright (C) 2005, Nickolay V. Shmyrev <nshmyrev@yandex.ru>
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)
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.
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.
22 #include "djvu-document.h"
23 #include "djvu-text.h"
24 #include "djvu-links.h"
25 #include "djvu-document-private.h"
26 #include "ev-document-thumbnails.h"
27 #include "ev-file-exporter.h"
28 #include "ev-document-misc.h"
29 #include "ev-document-find.h"
30 #include "ev-document-links.h"
31 #include "ev-selection.h"
32 #include "ev-file-helpers.h"
34 #include <gdk-pixbuf/gdk-pixbuf-core.h>
35 #include <glib/gi18n.h>
36 #include <glib/gunicode.h>
39 #define SCALE_FACTOR 0.2
46 struct _DjvuDocumentClass
48 GObjectClass parent_class;
51 typedef struct _DjvuDocumentClass DjvuDocumentClass;
53 static void djvu_document_document_iface_init (EvDocumentIface *iface);
54 static void djvu_document_document_thumbnails_iface_init (EvDocumentThumbnailsIface *iface);
55 static void djvu_document_file_exporter_iface_init (EvFileExporterIface *iface);
56 static void djvu_document_find_iface_init (EvDocumentFindIface *iface);
57 static void djvu_document_document_links_iface_init (EvDocumentLinksIface *iface);
58 static void djvu_selection_iface_init (EvSelectionIface *iface);
60 EV_BACKEND_REGISTER_WITH_CODE (DjvuDocument, djvu_document,
62 G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_THUMBNAILS, djvu_document_document_thumbnails_iface_init);
63 G_IMPLEMENT_INTERFACE (EV_TYPE_FILE_EXPORTER, djvu_document_file_exporter_iface_init);
64 G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_FIND, djvu_document_find_iface_init);
65 G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_LINKS, djvu_document_document_links_iface_init);
66 G_IMPLEMENT_INTERFACE (EV_TYPE_SELECTION, djvu_selection_iface_init);
71 djvu_handle_events (DjvuDocument *djvu_document, int wait)
73 ddjvu_context_t *ctx = djvu_document->d_context;
74 const ddjvu_message_t *msg;
80 msg = ddjvu_message_wait (ctx);
82 while ((msg = ddjvu_message_peek (ctx))) {
83 switch (msg->m_any.tag) {
85 g_warning ("DjvuLibre error: %s",
86 msg->m_error.message);
87 if (msg->m_error.filename)
88 g_warning ("DjvuLibre error: %s:%d",
89 msg->m_error.filename,
95 ddjvu_message_pop (ctx);
100 djvu_document_load (EvDocument *document,
104 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
105 ddjvu_document_t *doc;
107 gboolean missing_files = FALSE;
109 /* FIXME: We could actually load uris */
110 filename = g_filename_from_uri (uri, NULL, error);
114 doc = ddjvu_document_create_by_filename (djvu_document->d_context, filename, TRUE);
121 if (djvu_document->d_document)
122 ddjvu_document_release (djvu_document->d_document);
124 djvu_document->d_document = doc;
126 while (!ddjvu_document_decoding_done (djvu_document->d_document))
127 djvu_handle_events (djvu_document, TRUE);
128 g_free (djvu_document->uri);
129 djvu_document->uri = g_strdup (uri);
131 if (ddjvu_document_get_type (djvu_document->d_document) == DDJVU_DOCTYPE_INDIRECT) {
136 base = g_path_get_dirname (filename);
138 n_files = ddjvu_document_get_filenum (djvu_document->d_document);
139 for (i = 0; i < n_files; i++) {
140 struct ddjvu_fileinfo_s fileinfo;
143 ddjvu_document_get_fileinfo (djvu_document->d_document,
146 if (fileinfo.type != 'P')
149 file = g_build_filename (base, fileinfo.id, NULL);
150 if (!g_file_test (file, G_FILE_TEST_EXISTS)) {
151 missing_files = TRUE;
166 _("The document is composed by several files. "
167 "One or more of such files cannot be accessed."));
177 djvu_document_save (EvDocument *document,
181 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
183 return ev_xfer_uri_simple (djvu_document->uri, uri, error);
187 djvu_document_get_n_pages (EvDocument *document)
189 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
191 g_return_val_if_fail (djvu_document->d_document, 0);
193 return ddjvu_document_get_pagenum (djvu_document->d_document);
197 djvu_document_get_page_size (EvDocument *document,
202 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
203 ddjvu_pageinfo_t info;
206 g_return_if_fail (djvu_document->d_document);
208 while ((r = ddjvu_document_get_pageinfo(djvu_document->d_document, page, &info)) < DDJVU_JOB_OK)
209 djvu_handle_events(djvu_document, TRUE);
211 if (r >= DDJVU_JOB_FAILED)
212 djvu_handle_events(djvu_document, TRUE);
214 *width = info.width * SCALE_FACTOR;
215 *height = info.height * SCALE_FACTOR;
218 static cairo_surface_t *
219 djvu_document_render (EvDocument *document,
222 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
223 cairo_surface_t *surface;
228 ddjvu_page_t *d_page;
229 ddjvu_page_rotation_t rotation;
230 double page_width, page_height, tmp;
231 static const cairo_user_data_key_t key;
233 d_page = ddjvu_page_create_by_pageno (djvu_document->d_document, rc->page);
235 while (!ddjvu_page_decoding_done (d_page))
236 djvu_handle_events(djvu_document, TRUE);
238 page_width = ddjvu_page_get_width (d_page) * rc->scale * SCALE_FACTOR + 0.5;
239 page_height = ddjvu_page_get_height (d_page) * rc->scale * SCALE_FACTOR + 0.5;
241 switch (rc->rotation) {
243 rotation = DDJVU_ROTATE_90;
245 page_height = page_width;
250 rotation = DDJVU_ROTATE_180;
254 rotation = DDJVU_ROTATE_270;
256 page_height = page_width;
261 rotation = DDJVU_ROTATE_0;
264 rowstride = page_width * 4;
265 pixels = (gchar *) g_malloc (page_height * rowstride);
266 surface = cairo_image_surface_create_for_data ((guchar *)pixels,
271 cairo_surface_set_user_data (surface, &key,
272 pixels, (cairo_destroy_func_t)g_free);
275 prect.w = page_width;
276 prect.h = page_height;
279 ddjvu_page_set_rotation (d_page, rotation);
281 ddjvu_page_render (d_page, DDJVU_RENDER_COLOR,
284 djvu_document->d_format,
292 djvu_document_finalize (GObject *object)
294 DjvuDocument *djvu_document = DJVU_DOCUMENT (object);
296 if (djvu_document->search)
297 djvu_text_free (djvu_document->search);
299 if (djvu_document->d_document)
300 ddjvu_document_release (djvu_document->d_document);
302 if (djvu_document->opts)
303 g_string_free (djvu_document->opts, TRUE);
305 if (djvu_document->ps_filename)
306 g_free (djvu_document->ps_filename);
308 ddjvu_context_release (djvu_document->d_context);
309 ddjvu_format_release (djvu_document->d_format);
310 ddjvu_format_release (djvu_document->thumbs_format);
311 g_free (djvu_document->uri);
313 G_OBJECT_CLASS (djvu_document_parent_class)->finalize (object);
317 djvu_document_class_init (DjvuDocumentClass *klass)
319 GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
321 gobject_class->finalize = djvu_document_finalize;
324 static EvDocumentInfo *
325 djvu_document_get_info (EvDocument *document)
327 EvDocumentInfo *info;
329 info = g_new0 (EvDocumentInfo, 1);
335 djvu_document_document_iface_init (EvDocumentIface *iface)
337 iface->load = djvu_document_load;
338 iface->save = djvu_document_save;
339 iface->get_n_pages = djvu_document_get_n_pages;
340 iface->get_page_size = djvu_document_get_page_size;
341 iface->render = djvu_document_render;
342 iface->get_info = djvu_document_get_info;
346 djvu_selection_get_selected_text (EvSelection *selection,
348 EvSelectionStyle style,
351 DjvuDocument *djvu_document = DJVU_DOCUMENT (selection);
352 double width, height;
353 EvRectangle rectangle;
356 djvu_document_get_page_size (EV_DOCUMENT (djvu_document),
357 rc->page, &width, &height);
358 rectangle.x1 = points->x1 / SCALE_FACTOR;
359 rectangle.y1 = (height - points->y2) / SCALE_FACTOR;
360 rectangle.x2 = points->x2 / SCALE_FACTOR;
361 rectangle.y2 = (height - points->y1) / SCALE_FACTOR;
363 text = djvu_text_copy (djvu_document, rc->page, &rectangle);
366 text = g_strdup ("");
372 djvu_selection_iface_init (EvSelectionIface *iface)
374 iface->get_selected_text = djvu_selection_get_selected_text;
378 djvu_document_thumbnails_get_dimensions (EvDocumentThumbnails *document,
383 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
384 gdouble page_width, page_height;
386 djvu_document_get_page_size (EV_DOCUMENT(djvu_document), rc->page,
387 &page_width, &page_height);
389 if (rc->rotation == 90 || rc->rotation == 270) {
390 *width = (gint) (page_height * rc->scale);
391 *height = (gint) (page_width * rc->scale);
393 *width = (gint) (page_width * rc->scale);
394 *height = (gint) (page_height * rc->scale);
399 djvu_document_thumbnails_get_thumbnail (EvDocumentThumbnails *document,
403 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
404 GdkPixbuf *pixbuf, *rotated_pixbuf;
405 gdouble page_width, page_height;
406 gint thumb_width, thumb_height;
409 g_return_val_if_fail (djvu_document->d_document, NULL);
411 djvu_document_get_page_size (EV_DOCUMENT(djvu_document), rc->page,
412 &page_width, &page_height);
414 thumb_width = (gint) (page_width * rc->scale);
415 thumb_height = (gint) (page_height * rc->scale);
417 pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, FALSE, 8,
418 thumb_width, thumb_height);
419 gdk_pixbuf_fill (pixbuf, 0xffffffff);
420 pixels = gdk_pixbuf_get_pixels (pixbuf);
422 while (ddjvu_thumbnail_status (djvu_document->d_document, rc->page, 1) < DDJVU_JOB_OK)
423 djvu_handle_events(djvu_document, TRUE);
425 ddjvu_thumbnail_render (djvu_document->d_document, rc->page,
426 &thumb_width, &thumb_height,
427 djvu_document->thumbs_format,
428 gdk_pixbuf_get_rowstride (pixbuf),
431 rotated_pixbuf = gdk_pixbuf_rotate_simple (pixbuf, 360 - rc->rotation);
432 g_object_unref (pixbuf);
435 GdkPixbuf *tmp_pixbuf = rotated_pixbuf;
437 rotated_pixbuf = ev_document_misc_get_thumbnail_frame (-1, -1, tmp_pixbuf);
438 g_object_unref (tmp_pixbuf);
441 return rotated_pixbuf;
445 djvu_document_document_thumbnails_iface_init (EvDocumentThumbnailsIface *iface)
447 iface->get_thumbnail = djvu_document_thumbnails_get_thumbnail;
448 iface->get_dimensions = djvu_document_thumbnails_get_dimensions;
451 /* EvFileExporterIface */
453 djvu_document_file_exporter_begin (EvFileExporter *exporter,
454 EvFileExporterContext *fc)
456 DjvuDocument *djvu_document = DJVU_DOCUMENT (exporter);
458 if (djvu_document->ps_filename)
459 g_free (djvu_document->ps_filename);
460 djvu_document->ps_filename = g_strdup (fc->filename);
462 g_string_assign (djvu_document->opts, "-page=");
466 djvu_document_file_exporter_do_page (EvFileExporter *exporter,
469 DjvuDocument *djvu_document = DJVU_DOCUMENT (exporter);
471 g_string_append_printf (djvu_document->opts, "%d,", (rc->page) + 1);
475 djvu_document_file_exporter_end (EvFileExporter *exporter)
478 const char *d_optv[d_optc];
480 DjvuDocument *djvu_document = DJVU_DOCUMENT (exporter);
482 FILE *fn = fopen (djvu_document->ps_filename, "w");
484 g_warning ("Cannot open file ā%sā.", djvu_document->ps_filename);
488 d_optv[0] = djvu_document->opts->str;
490 ddjvu_job_t * job = ddjvu_document_print(djvu_document->d_document, fn, d_optc, d_optv);
491 while (!ddjvu_job_done(job)) {
492 djvu_handle_events (djvu_document, TRUE);
498 static EvFileExporterCapabilities
499 djvu_document_file_exporter_get_capabilities (EvFileExporter *exporter)
501 return EV_FILE_EXPORTER_CAN_PAGE_SET |
502 EV_FILE_EXPORTER_CAN_COPIES |
503 EV_FILE_EXPORTER_CAN_COLLATE |
504 EV_FILE_EXPORTER_CAN_REVERSE |
505 EV_FILE_EXPORTER_CAN_GENERATE_PS;
509 djvu_document_file_exporter_iface_init (EvFileExporterIface *iface)
511 iface->begin = djvu_document_file_exporter_begin;
512 iface->do_page = djvu_document_file_exporter_do_page;
513 iface->end = djvu_document_file_exporter_end;
514 iface->get_capabilities = djvu_document_file_exporter_get_capabilities;
518 djvu_document_init (DjvuDocument *djvu_document)
520 guint masks[4] = { 0xff0000, 0xff00, 0xff, 0xff000000 };
522 djvu_document->d_context = ddjvu_context_create ("Evince");
523 djvu_document->d_format = ddjvu_format_create (DDJVU_FORMAT_RGBMASK32, 4, masks);
524 ddjvu_format_set_row_order (djvu_document->d_format, 1);
526 djvu_document->thumbs_format = ddjvu_format_create (DDJVU_FORMAT_RGB24, 0, 0);
527 ddjvu_format_set_row_order (djvu_document->thumbs_format, 1);
529 djvu_document->ps_filename = NULL;
530 djvu_document->opts = g_string_new ("");
532 djvu_document->d_document = NULL;
536 djvu_document_find_begin (EvDocumentFind *document,
538 const char *search_string,
539 gboolean case_sensitive)
541 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
543 if (djvu_document->search &&
544 strcmp (search_string, djvu_text_get_text (djvu_document->search)) == 0)
547 if (djvu_document->search)
548 djvu_text_free (djvu_document->search);
550 djvu_document->search = djvu_text_new (djvu_document,
557 djvu_document_find_get_n_results (EvDocumentFind *document_find, int page)
559 DjvuText *search = DJVU_DOCUMENT (document_find)->search;
562 return djvu_text_n_results (search, page);
569 djvu_document_find_get_result (EvDocumentFind *document_find,
572 EvRectangle *rectangle)
574 DjvuDocument *djvu_document = DJVU_DOCUMENT (document_find);
575 DjvuText *search = djvu_document->search;
577 double width, height;
582 r = djvu_text_get_result (search, page, n_result);
586 djvu_document_get_page_size (EV_DOCUMENT (djvu_document),
587 page, &width, &height);
588 rectangle->x1 = r->x1 * SCALE_FACTOR;
589 rectangle->y1 = height - r->y2 * SCALE_FACTOR;
590 rectangle->x2 = r->x2 * SCALE_FACTOR;
591 rectangle->y2 = height - r->y1 * SCALE_FACTOR;
597 djvu_document_find_page_has_results (EvDocumentFind *document_find,
600 DjvuText *search = DJVU_DOCUMENT (document_find)->search;
602 return search && djvu_text_has_results (search, page);
606 djvu_document_find_get_progress (EvDocumentFind *document_find)
608 DjvuText *search = DJVU_DOCUMENT (document_find)->search;
610 if (search == NULL) {
614 return djvu_text_get_progress (search);
618 djvu_document_find_cancel (EvDocumentFind *document)
620 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
622 if (djvu_document->search) {
623 djvu_text_free (djvu_document->search);
624 djvu_document->search = NULL;
629 djvu_document_find_iface_init (EvDocumentFindIface *iface)
631 iface->begin = djvu_document_find_begin;
632 iface->get_n_results = djvu_document_find_get_n_results;
633 iface->get_result = djvu_document_find_get_result;
634 iface->page_has_results = djvu_document_find_page_has_results;
635 iface->get_progress = djvu_document_find_get_progress;
636 iface->cancel = djvu_document_find_cancel;
640 djvu_document_links_get_links (EvDocumentLinks *document_links,
643 return djvu_links_get_links (document_links, page, SCALE_FACTOR);
647 djvu_document_document_links_iface_init (EvDocumentLinksIface *iface)
649 iface->has_document_links = djvu_links_has_document_links;
650 iface->get_links_model = djvu_links_get_links_model;
651 iface->get_links = djvu_document_links_get_links;
652 iface->find_link_dest = djvu_links_find_link_dest;