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.
23 #include "djvu-document.h"
24 #include "djvu-text.h"
25 #include "djvu-links.h"
26 #include "djvu-document-private.h"
27 #include "ev-document-thumbnails.h"
28 #include "ev-file-exporter.h"
29 #include "ev-document-misc.h"
30 #include "ev-document-find.h"
31 #include "ev-document-links.h"
32 #include "ev-selection.h"
33 #include "ev-file-helpers.h"
35 #include <gdk-pixbuf/gdk-pixbuf-core.h>
36 #include <glib/gi18n.h>
37 #include <glib/gunicode.h>
40 #define SCALE_FACTOR 0.2
47 struct _DjvuDocumentClass
49 GObjectClass parent_class;
52 typedef struct _DjvuDocumentClass DjvuDocumentClass;
54 static void djvu_document_document_iface_init (EvDocumentIface *iface);
55 static void djvu_document_document_thumbnails_iface_init (EvDocumentThumbnailsIface *iface);
56 static void djvu_document_file_exporter_iface_init (EvFileExporterIface *iface);
57 static void djvu_document_find_iface_init (EvDocumentFindIface *iface);
58 static void djvu_document_document_links_iface_init (EvDocumentLinksIface *iface);
59 static void djvu_selection_iface_init (EvSelectionIface *iface);
61 EV_BACKEND_REGISTER_WITH_CODE (DjvuDocument, djvu_document,
63 EV_BACKEND_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_THUMBNAILS, djvu_document_document_thumbnails_iface_init);
64 EV_BACKEND_IMPLEMENT_INTERFACE (EV_TYPE_FILE_EXPORTER, djvu_document_file_exporter_iface_init);
65 EV_BACKEND_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_FIND, djvu_document_find_iface_init);
66 EV_BACKEND_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_LINKS, djvu_document_document_links_iface_init);
67 EV_BACKEND_IMPLEMENT_INTERFACE (EV_TYPE_SELECTION, djvu_selection_iface_init);
72 djvu_handle_events (DjvuDocument *djvu_document, int wait)
74 ddjvu_context_t *ctx = djvu_document->d_context;
75 const ddjvu_message_t *msg;
81 msg = ddjvu_message_wait (ctx);
83 while ((msg = ddjvu_message_peek (ctx))) {
84 switch (msg->m_any.tag) {
86 g_warning ("DjvuLibre error: %s",
87 msg->m_error.message);
88 if (msg->m_error.filename)
89 g_warning ("DjvuLibre error: %s:%d",
90 msg->m_error.filename,
96 ddjvu_message_pop (ctx);
101 djvu_document_load (EvDocument *document,
105 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
106 ddjvu_document_t *doc;
108 gboolean missing_files = FALSE;
110 /* FIXME: We could actually load uris */
111 filename = g_filename_from_uri (uri, NULL, error);
115 doc = ddjvu_document_create_by_filename (djvu_document->d_context, filename, TRUE);
122 if (djvu_document->d_document)
123 ddjvu_document_release (djvu_document->d_document);
125 djvu_document->d_document = doc;
127 while (!ddjvu_document_decoding_done (djvu_document->d_document))
128 djvu_handle_events (djvu_document, TRUE);
129 g_free (djvu_document->uri);
130 djvu_document->uri = g_strdup (uri);
132 if (ddjvu_document_get_type (djvu_document->d_document) == DDJVU_DOCTYPE_INDIRECT) {
137 base = g_path_get_dirname (filename);
139 n_files = ddjvu_document_get_filenum (djvu_document->d_document);
140 for (i = 0; i < n_files; i++) {
141 struct ddjvu_fileinfo_s fileinfo;
144 ddjvu_document_get_fileinfo (djvu_document->d_document,
147 if (fileinfo.type != 'P')
150 file = g_build_filename (base, fileinfo.id, NULL);
151 if (!g_file_test (file, G_FILE_TEST_EXISTS)) {
152 missing_files = TRUE;
167 _("The document is composed by several files. "
168 "One or more of such files cannot be accessed."));
178 djvu_document_save (EvDocument *document,
182 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
184 return ev_xfer_uri_simple (djvu_document->uri, uri, error);
188 djvu_document_get_n_pages (EvDocument *document)
190 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
192 g_return_val_if_fail (djvu_document->d_document, 0);
194 return ddjvu_document_get_pagenum (djvu_document->d_document);
198 document_get_page_size (DjvuDocument *djvu_document,
203 ddjvu_pageinfo_t info;
206 while ((r = ddjvu_document_get_pageinfo(djvu_document->d_document, page, &info)) < DDJVU_JOB_OK)
207 djvu_handle_events(djvu_document, TRUE);
209 if (r >= DDJVU_JOB_FAILED)
210 djvu_handle_events(djvu_document, TRUE);
212 *width = info.width * SCALE_FACTOR;
213 *height = info.height * SCALE_FACTOR;
217 djvu_document_get_page_size (EvDocument *document,
222 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
224 g_return_if_fail (djvu_document->d_document);
226 document_get_page_size (djvu_document, page->index,
230 static cairo_surface_t *
231 djvu_document_render (EvDocument *document,
234 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
235 cairo_surface_t *surface;
240 ddjvu_page_t *d_page;
241 ddjvu_page_rotation_t rotation;
242 double page_width, page_height, tmp;
243 static const cairo_user_data_key_t key;
245 d_page = ddjvu_page_create_by_pageno (djvu_document->d_document, rc->page->index);
247 while (!ddjvu_page_decoding_done (d_page))
248 djvu_handle_events(djvu_document, TRUE);
250 page_width = ddjvu_page_get_width (d_page) * rc->scale * SCALE_FACTOR + 0.5;
251 page_height = ddjvu_page_get_height (d_page) * rc->scale * SCALE_FACTOR + 0.5;
253 switch (rc->rotation) {
255 rotation = DDJVU_ROTATE_90;
257 page_height = page_width;
262 rotation = DDJVU_ROTATE_180;
266 rotation = DDJVU_ROTATE_270;
268 page_height = page_width;
273 rotation = DDJVU_ROTATE_0;
275 #ifdef HAVE_CAIRO_FORMAT_STRIDE_FOR_WIDTH
276 rowstride = cairo_format_stride_for_width (CAIRO_FORMAT_RGB24, page_width);
278 rowstride = page_width * 4;
280 pixels = (gchar *) g_malloc (page_height * rowstride);
281 surface = cairo_image_surface_create_for_data ((guchar *)pixels,
286 cairo_surface_set_user_data (surface, &key,
287 pixels, (cairo_destroy_func_t)g_free);
290 prect.w = page_width;
291 prect.h = page_height;
294 ddjvu_page_set_rotation (d_page, rotation);
296 ddjvu_page_render (d_page, DDJVU_RENDER_COLOR,
299 djvu_document->d_format,
307 djvu_document_finalize (GObject *object)
309 DjvuDocument *djvu_document = DJVU_DOCUMENT (object);
311 if (djvu_document->search)
312 djvu_text_free (djvu_document->search);
314 if (djvu_document->d_document)
315 ddjvu_document_release (djvu_document->d_document);
317 if (djvu_document->opts)
318 g_string_free (djvu_document->opts, TRUE);
320 if (djvu_document->ps_filename)
321 g_free (djvu_document->ps_filename);
323 ddjvu_context_release (djvu_document->d_context);
324 ddjvu_format_release (djvu_document->d_format);
325 ddjvu_format_release (djvu_document->thumbs_format);
326 g_free (djvu_document->uri);
328 G_OBJECT_CLASS (djvu_document_parent_class)->finalize (object);
332 djvu_document_class_init (DjvuDocumentClass *klass)
334 GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
336 gobject_class->finalize = djvu_document_finalize;
339 static EvDocumentInfo *
340 djvu_document_get_info (EvDocument *document)
342 EvDocumentInfo *info;
344 info = g_new0 (EvDocumentInfo, 1);
350 djvu_document_document_iface_init (EvDocumentIface *iface)
352 iface->load = djvu_document_load;
353 iface->save = djvu_document_save;
354 iface->get_n_pages = djvu_document_get_n_pages;
355 iface->get_page_size = djvu_document_get_page_size;
356 iface->render = djvu_document_render;
357 iface->get_info = djvu_document_get_info;
361 djvu_selection_get_selected_text (EvSelection *selection,
363 EvSelectionStyle style,
366 DjvuDocument *djvu_document = DJVU_DOCUMENT (selection);
367 double width, height;
368 EvRectangle rectangle;
371 djvu_document_get_page_size (EV_DOCUMENT (djvu_document),
372 rc->page, &width, &height);
373 rectangle.x1 = points->x1 / SCALE_FACTOR;
374 rectangle.y1 = (height - points->y2) / SCALE_FACTOR;
375 rectangle.x2 = points->x2 / SCALE_FACTOR;
376 rectangle.y2 = (height - points->y1) / SCALE_FACTOR;
378 text = djvu_text_copy (djvu_document, rc->page->index, &rectangle);
381 text = g_strdup ("");
387 djvu_selection_iface_init (EvSelectionIface *iface)
389 iface->get_selected_text = djvu_selection_get_selected_text;
393 djvu_document_thumbnails_get_dimensions (EvDocumentThumbnails *document,
398 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
399 gdouble page_width, page_height;
401 djvu_document_get_page_size (EV_DOCUMENT(djvu_document), rc->page,
402 &page_width, &page_height);
404 if (rc->rotation == 90 || rc->rotation == 270) {
405 *width = (gint) (page_height * rc->scale);
406 *height = (gint) (page_width * rc->scale);
408 *width = (gint) (page_width * rc->scale);
409 *height = (gint) (page_height * rc->scale);
414 djvu_document_thumbnails_get_thumbnail (EvDocumentThumbnails *document,
418 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
419 GdkPixbuf *pixbuf, *rotated_pixbuf;
420 gdouble page_width, page_height;
421 gint thumb_width, thumb_height;
424 g_return_val_if_fail (djvu_document->d_document, NULL);
426 djvu_document_get_page_size (EV_DOCUMENT(djvu_document), rc->page,
427 &page_width, &page_height);
429 thumb_width = (gint) (page_width * rc->scale);
430 thumb_height = (gint) (page_height * rc->scale);
432 pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, FALSE, 8,
433 thumb_width, thumb_height);
434 gdk_pixbuf_fill (pixbuf, 0xffffffff);
435 pixels = gdk_pixbuf_get_pixels (pixbuf);
437 while (ddjvu_thumbnail_status (djvu_document->d_document, rc->page->index, 1) < DDJVU_JOB_OK)
438 djvu_handle_events(djvu_document, TRUE);
440 ddjvu_thumbnail_render (djvu_document->d_document, rc->page->index,
441 &thumb_width, &thumb_height,
442 djvu_document->thumbs_format,
443 gdk_pixbuf_get_rowstride (pixbuf),
446 rotated_pixbuf = gdk_pixbuf_rotate_simple (pixbuf, 360 - rc->rotation);
447 g_object_unref (pixbuf);
450 GdkPixbuf *tmp_pixbuf = rotated_pixbuf;
452 rotated_pixbuf = ev_document_misc_get_thumbnail_frame (-1, -1, tmp_pixbuf);
453 g_object_unref (tmp_pixbuf);
456 return rotated_pixbuf;
460 djvu_document_document_thumbnails_iface_init (EvDocumentThumbnailsIface *iface)
462 iface->get_thumbnail = djvu_document_thumbnails_get_thumbnail;
463 iface->get_dimensions = djvu_document_thumbnails_get_dimensions;
466 /* EvFileExporterIface */
468 djvu_document_file_exporter_begin (EvFileExporter *exporter,
469 EvFileExporterContext *fc)
471 DjvuDocument *djvu_document = DJVU_DOCUMENT (exporter);
473 if (djvu_document->ps_filename)
474 g_free (djvu_document->ps_filename);
475 djvu_document->ps_filename = g_strdup (fc->filename);
477 g_string_assign (djvu_document->opts, "-page=");
481 djvu_document_file_exporter_do_page (EvFileExporter *exporter,
484 DjvuDocument *djvu_document = DJVU_DOCUMENT (exporter);
486 g_string_append_printf (djvu_document->opts, "%d,", (rc->page->index) + 1);
490 djvu_document_file_exporter_end (EvFileExporter *exporter)
493 const char *d_optv[d_optc];
495 DjvuDocument *djvu_document = DJVU_DOCUMENT (exporter);
497 FILE *fn = fopen (djvu_document->ps_filename, "w");
499 g_warning ("Cannot open file ā%sā.", djvu_document->ps_filename);
503 d_optv[0] = djvu_document->opts->str;
505 ddjvu_job_t * job = ddjvu_document_print(djvu_document->d_document, fn, d_optc, d_optv);
506 while (!ddjvu_job_done(job)) {
507 djvu_handle_events (djvu_document, TRUE);
513 static EvFileExporterCapabilities
514 djvu_document_file_exporter_get_capabilities (EvFileExporter *exporter)
516 return EV_FILE_EXPORTER_CAN_PAGE_SET |
517 EV_FILE_EXPORTER_CAN_COPIES |
518 EV_FILE_EXPORTER_CAN_COLLATE |
519 EV_FILE_EXPORTER_CAN_REVERSE |
520 EV_FILE_EXPORTER_CAN_GENERATE_PS;
524 djvu_document_file_exporter_iface_init (EvFileExporterIface *iface)
526 iface->begin = djvu_document_file_exporter_begin;
527 iface->do_page = djvu_document_file_exporter_do_page;
528 iface->end = djvu_document_file_exporter_end;
529 iface->get_capabilities = djvu_document_file_exporter_get_capabilities;
533 djvu_document_init (DjvuDocument *djvu_document)
535 guint masks[4] = { 0xff0000, 0xff00, 0xff, 0xff000000 };
537 djvu_document->d_context = ddjvu_context_create ("Evince");
538 djvu_document->d_format = ddjvu_format_create (DDJVU_FORMAT_RGBMASK32, 4, masks);
539 ddjvu_format_set_row_order (djvu_document->d_format, 1);
541 djvu_document->thumbs_format = ddjvu_format_create (DDJVU_FORMAT_RGB24, 0, 0);
542 ddjvu_format_set_row_order (djvu_document->thumbs_format, 1);
544 djvu_document->ps_filename = NULL;
545 djvu_document->opts = g_string_new ("");
547 djvu_document->d_document = NULL;
551 djvu_document_find_begin (EvDocumentFind *document,
553 const char *search_string,
554 gboolean case_sensitive)
556 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
558 if (djvu_document->search &&
559 strcmp (search_string, djvu_text_get_text (djvu_document->search)) == 0)
562 if (djvu_document->search)
563 djvu_text_free (djvu_document->search);
565 djvu_document->search = djvu_text_new (djvu_document,
572 djvu_document_find_get_n_results (EvDocumentFind *document_find, int page)
574 DjvuText *search = DJVU_DOCUMENT (document_find)->search;
577 return djvu_text_n_results (search, page);
584 djvu_document_find_get_result (EvDocumentFind *document_find,
587 EvRectangle *rectangle)
589 DjvuDocument *djvu_document = DJVU_DOCUMENT (document_find);
590 DjvuText *search = djvu_document->search;
592 double width, height;
597 r = djvu_text_get_result (search, page, n_result);
601 document_get_page_size (djvu_document, page, &width, &height);
602 rectangle->x1 = r->x1 * SCALE_FACTOR;
603 rectangle->y1 = height - r->y2 * SCALE_FACTOR;
604 rectangle->x2 = r->x2 * SCALE_FACTOR;
605 rectangle->y2 = height - r->y1 * SCALE_FACTOR;
611 djvu_document_find_page_has_results (EvDocumentFind *document_find,
614 DjvuText *search = DJVU_DOCUMENT (document_find)->search;
616 return search && djvu_text_has_results (search, page);
620 djvu_document_find_get_progress (EvDocumentFind *document_find)
622 DjvuText *search = DJVU_DOCUMENT (document_find)->search;
624 if (search == NULL) {
628 return djvu_text_get_progress (search);
632 djvu_document_find_cancel (EvDocumentFind *document)
634 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
636 if (djvu_document->search) {
637 djvu_text_free (djvu_document->search);
638 djvu_document->search = NULL;
643 djvu_document_find_iface_init (EvDocumentFindIface *iface)
645 iface->begin = djvu_document_find_begin;
646 iface->get_n_results = djvu_document_find_get_n_results;
647 iface->get_result = djvu_document_find_get_result;
648 iface->page_has_results = djvu_document_find_page_has_results;
649 iface->get_progress = djvu_document_find_get_progress;
650 iface->cancel = djvu_document_find_cancel;
654 djvu_document_links_get_links (EvDocumentLinks *document_links,
657 return djvu_links_get_links (document_links, page, SCALE_FACTOR);
661 djvu_document_document_links_iface_init (EvDocumentLinksIface *iface)
663 iface->has_document_links = djvu_links_has_document_links;
664 iface->get_links_model = djvu_links_get_links_model;
665 iface->get_links = djvu_document_links_get_links;
666 iface->find_link_dest = djvu_links_find_link_dest;