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.
20 #include "djvu-document.h"
21 #include "djvu-text.h"
22 #include "djvu-links.h"
23 #include "djvu-document-private.h"
24 #include "ev-document-thumbnails.h"
25 #include "ev-file-exporter.h"
26 #include "ev-document-misc.h"
27 #include "ev-document-find.h"
28 #include "ev-document-links.h"
30 #include <gdk-pixbuf/gdk-pixbuf-core.h>
31 #include <glib/gi18n.h>
32 #include <glib/gunicode.h>
35 #define SCALE_FACTOR 0.2
42 struct _DjvuDocumentClass
44 GObjectClass parent_class;
47 typedef struct _DjvuDocumentClass DjvuDocumentClass;
49 static void djvu_document_document_iface_init (EvDocumentIface *iface);
50 static void djvu_document_document_thumbnails_iface_init (EvDocumentThumbnailsIface *iface);
51 static void djvu_document_file_exporter_iface_init (EvFileExporterIface *iface);
52 static void djvu_document_find_iface_init (EvDocumentFindIface *iface);
53 static void djvu_document_document_links_iface_init (EvDocumentLinksIface *iface);
55 G_DEFINE_TYPE_WITH_CODE
56 (DjvuDocument, djvu_document, G_TYPE_OBJECT,
58 G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT, djvu_document_document_iface_init);
59 G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_THUMBNAILS, djvu_document_document_thumbnails_iface_init);
60 G_IMPLEMENT_INTERFACE (EV_TYPE_FILE_EXPORTER, djvu_document_file_exporter_iface_init);
61 G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_FIND, djvu_document_find_iface_init);
62 G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_LINKS, djvu_document_document_links_iface_init);
67 djvu_handle_events (DjvuDocument *djvu_document, int wait)
69 ddjvu_context_t *ctx = djvu_document->d_context;
70 const ddjvu_message_t *msg;
76 msg = ddjvu_message_wait (ctx);
78 while ((msg = ddjvu_message_peek (ctx))) {
79 switch (msg->m_any.tag) {
81 g_warning ("DjvuLibre error: %s",
82 msg->m_error.message);
83 if (msg->m_error.filename)
84 g_warning ("DjvuLibre error: %s:%d",
85 msg->m_error.filename,
91 ddjvu_message_pop (ctx);
96 djvu_document_load (EvDocument *document,
100 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
101 ddjvu_document_t *doc;
103 gboolean missing_files = FALSE;
105 /* FIXME: We could actually load uris */
106 filename = g_filename_from_uri (uri, NULL, error);
110 doc = ddjvu_document_create_by_filename (djvu_document->d_context, filename, TRUE);
117 if (djvu_document->d_document)
118 ddjvu_document_release (djvu_document->d_document);
120 djvu_document->d_document = doc;
122 while (!ddjvu_document_decoding_done (djvu_document->d_document))
123 djvu_handle_events (djvu_document, TRUE);
124 g_free (djvu_document->uri);
125 djvu_document->uri = g_strdup (uri);
127 if (ddjvu_document_get_type (djvu_document->d_document) == DDJVU_DOCTYPE_INDIRECT) {
132 base = g_path_get_dirname (filename);
134 n_files = ddjvu_document_get_filenum (djvu_document->d_document);
135 for (i = 0; i < n_files; i++) {
136 struct ddjvu_fileinfo_s fileinfo;
139 ddjvu_document_get_fileinfo (djvu_document->d_document,
142 if (fileinfo.type != 'P')
145 file = g_build_filename (base, fileinfo.id, NULL);
146 if (!g_file_test (file, G_FILE_TEST_EXISTS)) {
147 missing_files = TRUE;
162 _("The document is composed by several files. "
163 "One or more of such files cannot be accessed."));
173 djvu_document_save (EvDocument *document,
177 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
179 return ev_xfer_uri_simple (djvu_document->uri, uri, error);
183 djvu_document_get_n_pages (EvDocument *document)
185 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
187 g_return_val_if_fail (djvu_document->d_document, 0);
189 return ddjvu_document_get_pagenum (djvu_document->d_document);
193 djvu_document_get_page_size (EvDocument *document,
198 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
199 ddjvu_pageinfo_t info;
202 g_return_if_fail (djvu_document->d_document);
204 while ((r = ddjvu_document_get_pageinfo(djvu_document->d_document, page, &info)) < DDJVU_JOB_OK)
205 djvu_handle_events(djvu_document, TRUE);
207 if (r >= DDJVU_JOB_FAILED)
208 djvu_handle_events(djvu_document, TRUE);
210 *width = info.width * SCALE_FACTOR;
211 *height = info.height * SCALE_FACTOR;
214 static cairo_surface_t *
215 djvu_document_render (EvDocument *document,
218 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
219 cairo_surface_t *surface;
224 ddjvu_page_t *d_page;
225 ddjvu_page_rotation_t rotation;
226 double page_width, page_height, tmp;
227 static const cairo_user_data_key_t key;
229 d_page = ddjvu_page_create_by_pageno (djvu_document->d_document, rc->page);
231 while (!ddjvu_page_decoding_done (d_page))
232 djvu_handle_events(djvu_document, TRUE);
234 page_width = ddjvu_page_get_width (d_page) * rc->scale * SCALE_FACTOR + 0.5;
235 page_height = ddjvu_page_get_height (d_page) * rc->scale * SCALE_FACTOR + 0.5;
237 switch (rc->rotation) {
239 rotation = DDJVU_ROTATE_90;
241 page_height = page_width;
246 rotation = DDJVU_ROTATE_180;
250 rotation = DDJVU_ROTATE_270;
252 page_height = page_width;
257 rotation = DDJVU_ROTATE_0;
260 rowstride = page_width * 4;
261 pixels = (gchar *) g_malloc (page_height * rowstride);
262 surface = cairo_image_surface_create_for_data (pixels,
267 cairo_surface_set_user_data (surface, &key,
268 pixels, (cairo_destroy_func_t)g_free);
271 prect.w = page_width;
272 prect.h = page_height;
275 ddjvu_page_set_rotation (d_page, rotation);
277 ddjvu_page_render (d_page, DDJVU_RENDER_COLOR,
280 djvu_document->d_format,
288 djvu_document_finalize (GObject *object)
290 DjvuDocument *djvu_document = DJVU_DOCUMENT (object);
292 if (djvu_document->d_document)
293 ddjvu_document_release (djvu_document->d_document);
295 if (djvu_document->opts)
296 g_string_free (djvu_document->opts, TRUE);
298 if (djvu_document->ps_filename)
299 g_free (djvu_document->ps_filename);
301 ddjvu_context_release (djvu_document->d_context);
302 ddjvu_format_release (djvu_document->d_format);
303 ddjvu_format_release (djvu_document->thumbs_format);
304 g_free (djvu_document->uri);
306 G_OBJECT_CLASS (djvu_document_parent_class)->finalize (object);
310 djvu_document_class_init (DjvuDocumentClass *klass)
312 GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
314 gobject_class->finalize = djvu_document_finalize;
318 djvu_document_can_get_text (EvDocument *document)
325 djvu_document_get_text (EvDocument *document, int page, EvRectangle *rect)
327 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
328 double width, height;
329 EvRectangle rectangle;
332 djvu_document_get_page_size (document, page, &width, &height);
333 rectangle.x1 = rect->x1 / SCALE_FACTOR;
334 rectangle.y1 = (height - rect->y2) / SCALE_FACTOR;
335 rectangle.x2 = rect->x2 / SCALE_FACTOR;
336 rectangle.y2 = (height - rect->y1) / SCALE_FACTOR;
338 text = djvu_text_copy (djvu_document, page, &rectangle);
341 text = g_strdup ("");
346 static EvDocumentInfo *
347 djvu_document_get_info (EvDocument *document)
349 EvDocumentInfo *info;
351 info = g_new0 (EvDocumentInfo, 1);
357 djvu_document_document_iface_init (EvDocumentIface *iface)
359 iface->load = djvu_document_load;
360 iface->save = djvu_document_save;
361 iface->can_get_text = djvu_document_can_get_text;
362 iface->get_text = djvu_document_get_text;
363 iface->get_n_pages = djvu_document_get_n_pages;
364 iface->get_page_size = djvu_document_get_page_size;
365 iface->render = djvu_document_render;
366 iface->get_info = djvu_document_get_info;
370 djvu_document_thumbnails_get_dimensions (EvDocumentThumbnails *document,
375 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
376 gdouble page_width, page_height;
378 djvu_document_get_page_size (EV_DOCUMENT(djvu_document), rc->page,
379 &page_width, &page_height);
381 if (rc->rotation == 90 || rc->rotation == 270) {
382 *width = (gint) (page_height * rc->scale);
383 *height = (gint) (page_width * rc->scale);
385 *width = (gint) (page_width * rc->scale);
386 *height = (gint) (page_height * rc->scale);
391 djvu_document_thumbnails_get_thumbnail (EvDocumentThumbnails *document,
395 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
396 GdkPixbuf *pixbuf, *rotated_pixbuf;
397 gdouble page_width, page_height;
398 gint thumb_width, thumb_height;
401 g_return_val_if_fail (djvu_document->d_document, NULL);
403 djvu_document_get_page_size (EV_DOCUMENT(djvu_document), rc->page,
404 &page_width, &page_height);
406 thumb_width = (gint) (page_width * rc->scale);
407 thumb_height = (gint) (page_height * rc->scale);
409 pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, FALSE, 8,
410 thumb_width, thumb_height);
411 gdk_pixbuf_fill (pixbuf, 0xffffffff);
412 pixels = gdk_pixbuf_get_pixels (pixbuf);
414 while (ddjvu_thumbnail_status (djvu_document->d_document, rc->page, 1) < DDJVU_JOB_OK)
415 djvu_handle_events(djvu_document, TRUE);
417 ddjvu_thumbnail_render (djvu_document->d_document, rc->page,
418 &thumb_width, &thumb_height,
419 djvu_document->thumbs_format,
420 gdk_pixbuf_get_rowstride (pixbuf),
423 rotated_pixbuf = gdk_pixbuf_rotate_simple (pixbuf, 360 - rc->rotation);
424 g_object_unref (pixbuf);
427 GdkPixbuf *tmp_pixbuf = rotated_pixbuf;
429 rotated_pixbuf = ev_document_misc_get_thumbnail_frame (-1, -1, tmp_pixbuf);
430 g_object_unref (tmp_pixbuf);
433 return rotated_pixbuf;
437 djvu_document_document_thumbnails_iface_init (EvDocumentThumbnailsIface *iface)
439 iface->get_thumbnail = djvu_document_thumbnails_get_thumbnail;
440 iface->get_dimensions = djvu_document_thumbnails_get_dimensions;
443 /* EvFileExporterIface */
445 djvu_document_file_exporter_format_supported (EvFileExporter *exporter,
446 EvFileExporterFormat format)
448 return (format == EV_FILE_FORMAT_PS); // only exporting to PS is implemented.
452 djvu_document_file_exporter_begin (EvFileExporter *exporter,
453 EvFileExporterFormat format,
454 const char *filename, /* for storing the temp ps file */
461 DjvuDocument *djvu_document = DJVU_DOCUMENT (exporter);
463 if (djvu_document->ps_filename)
464 g_free (djvu_document->ps_filename);
465 djvu_document->ps_filename = g_strdup(filename);
467 g_string_assign(djvu_document->opts, "-page=");
471 djvu_document_file_exporter_do_page (EvFileExporter *exporter,
474 DjvuDocument *djvu_document = DJVU_DOCUMENT (exporter);
476 g_string_append_printf(djvu_document->opts, "%d,", (rc->page) + 1);
480 djvu_document_file_exporter_end (EvFileExporter *exporter)
483 const char *d_optv[d_optc];
485 DjvuDocument *djvu_document = DJVU_DOCUMENT (exporter);
487 FILE *fn = fopen(djvu_document->ps_filename, "w");
489 g_warning(_("Cannot open file ā%sā."), djvu_document->ps_filename);
493 d_optv[0] = djvu_document->opts->str;
495 ddjvu_job_t * job = ddjvu_document_print(djvu_document->d_document, fn, d_optc, d_optv);
496 while (!ddjvu_job_done(job) ) {
497 djvu_handle_events (djvu_document, TRUE);
504 djvu_document_file_exporter_iface_init (EvFileExporterIface *iface)
506 iface->format_supported = djvu_document_file_exporter_format_supported;
507 iface->begin = djvu_document_file_exporter_begin;
508 iface->do_page = djvu_document_file_exporter_do_page;
509 iface->end = djvu_document_file_exporter_end;
513 djvu_document_init (DjvuDocument *djvu_document)
515 guint masks[4] = { 0xff0000, 0xff00, 0xff, 0xff000000 };
517 djvu_document->d_context = ddjvu_context_create ("Evince");
518 djvu_document->d_format = ddjvu_format_create (DDJVU_FORMAT_RGBMASK32, 4, masks);
519 ddjvu_format_set_row_order (djvu_document->d_format, 1);
521 djvu_document->thumbs_format = ddjvu_format_create (DDJVU_FORMAT_RGB24, 0, 0);
522 ddjvu_format_set_row_order (djvu_document->thumbs_format, 1);
524 djvu_document->ps_filename = NULL;
525 djvu_document->opts = g_string_new ("");
527 djvu_document->d_document = NULL;
531 djvu_document_find_begin (EvDocumentFind *document,
533 const char *search_string,
534 gboolean case_sensitive)
536 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
538 if (djvu_document->search &&
539 strcmp (search_string, djvu_text_get_text (djvu_document->search)) == 0)
542 if (djvu_document->search)
543 djvu_text_free (djvu_document->search);
545 djvu_document->search = djvu_text_new (djvu_document,
552 djvu_document_find_get_n_results (EvDocumentFind *document_find, int page)
554 DjvuText *search = DJVU_DOCUMENT (document_find)->search;
557 return djvu_text_n_results (search, page);
564 djvu_document_find_get_result (EvDocumentFind *document_find,
567 EvRectangle *rectangle)
569 DjvuDocument *djvu_document = DJVU_DOCUMENT (document_find);
570 DjvuText *search = djvu_document->search;
572 double width, height;
577 r = djvu_text_get_result (search, page, n_result);
581 djvu_document_get_page_size (EV_DOCUMENT (djvu_document),
582 page, &width, &height);
583 rectangle->x1 = r->x1 * SCALE_FACTOR;
584 rectangle->y1 = height - r->y2 * SCALE_FACTOR;
585 rectangle->x2 = r->x2 * SCALE_FACTOR;
586 rectangle->y2 = height - r->y1 * SCALE_FACTOR;
592 djvu_document_find_page_has_results (EvDocumentFind *document_find,
595 DjvuText *search = DJVU_DOCUMENT (document_find)->search;
597 return search && djvu_text_has_results (search, page);
601 djvu_document_find_get_progress (EvDocumentFind *document_find)
603 DjvuText *search = DJVU_DOCUMENT (document_find)->search;
605 if (search == NULL) {
609 return djvu_text_get_progress (search);
613 djvu_document_find_cancel (EvDocumentFind *document)
615 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
617 if (djvu_document->search) {
618 djvu_text_free (djvu_document->search);
619 djvu_document->search = NULL;
624 djvu_document_find_iface_init (EvDocumentFindIface *iface)
626 iface->begin = djvu_document_find_begin;
627 iface->get_n_results = djvu_document_find_get_n_results;
628 iface->get_result = djvu_document_find_get_result;
629 iface->page_has_results = djvu_document_find_page_has_results;
630 iface->get_progress = djvu_document_find_get_progress;
631 iface->cancel = djvu_document_find_cancel;
635 djvu_document_links_get_links (EvDocumentLinks *document_links,
638 return djvu_links_get_links (document_links, page, SCALE_FACTOR);
642 djvu_document_document_links_iface_init (EvDocumentLinksIface *iface)
644 iface->has_document_links = djvu_links_has_document_links;
645 iface->get_links_model = djvu_links_get_links_model;
646 iface->get_links = djvu_document_links_get_links;
647 iface->find_link_dest = djvu_links_find_link_dest;