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, *rotated_surface;
224 ddjvu_page_t *d_page;
225 double page_width, page_height;
226 static const cairo_user_data_key_t key;
228 d_page = ddjvu_page_create_by_pageno (djvu_document->d_document, rc->page);
230 while (!ddjvu_page_decoding_done (d_page))
231 djvu_handle_events(djvu_document, TRUE);
233 page_width = ddjvu_page_get_width (d_page) * rc->scale * SCALE_FACTOR + 0.5;
234 page_height = ddjvu_page_get_height (d_page) * rc->scale * SCALE_FACTOR + 0.5;
236 rowstride = page_width * 4;
237 pixels = (gchar *) g_malloc (page_height * rowstride);
238 surface = cairo_image_surface_create_for_data (pixels,
243 cairo_surface_set_user_data (surface, &key,
244 pixels, (cairo_destroy_func_t)g_free);
247 prect.w = page_width;
248 prect.h = page_height;
251 ddjvu_page_render (d_page, DDJVU_RENDER_COLOR,
254 djvu_document->d_format,
258 rotated_surface = ev_document_misc_surface_rotate_and_scale (surface,
262 cairo_surface_destroy (surface);
264 return rotated_surface;
268 djvu_document_finalize (GObject *object)
270 DjvuDocument *djvu_document = DJVU_DOCUMENT (object);
272 if (djvu_document->d_document)
273 ddjvu_document_release (djvu_document->d_document);
275 if (djvu_document->opts)
276 g_string_free (djvu_document->opts, TRUE);
278 if (djvu_document->ps_filename)
279 g_free (djvu_document->ps_filename);
281 ddjvu_context_release (djvu_document->d_context);
282 ddjvu_format_release (djvu_document->d_format);
283 ddjvu_format_release (djvu_document->thumbs_format);
284 g_free (djvu_document->uri);
286 G_OBJECT_CLASS (djvu_document_parent_class)->finalize (object);
290 djvu_document_class_init (DjvuDocumentClass *klass)
292 GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
294 gobject_class->finalize = djvu_document_finalize;
298 djvu_document_can_get_text (EvDocument *document)
305 djvu_document_get_text (EvDocument *document, int page, EvRectangle *rect)
307 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
308 double width, height;
309 EvRectangle rectangle;
312 djvu_document_get_page_size (document, page, &width, &height);
313 rectangle.x1 = rect->x1 / SCALE_FACTOR;
314 rectangle.y1 = (height - rect->y2) / SCALE_FACTOR;
315 rectangle.x2 = rect->x2 / SCALE_FACTOR;
316 rectangle.y2 = (height - rect->y1) / SCALE_FACTOR;
318 text = djvu_text_copy (djvu_document, page, &rectangle);
321 text = g_strdup ("");
326 static EvDocumentInfo *
327 djvu_document_get_info (EvDocument *document)
329 EvDocumentInfo *info;
331 info = g_new0 (EvDocumentInfo, 1);
337 djvu_document_document_iface_init (EvDocumentIface *iface)
339 iface->load = djvu_document_load;
340 iface->save = djvu_document_save;
341 iface->can_get_text = djvu_document_can_get_text;
342 iface->get_text = djvu_document_get_text;
343 iface->get_n_pages = djvu_document_get_n_pages;
344 iface->get_page_size = djvu_document_get_page_size;
345 iface->render = djvu_document_render;
346 iface->get_info = djvu_document_get_info;
350 djvu_document_thumbnails_get_dimensions (EvDocumentThumbnails *document,
355 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
356 gdouble page_width, page_height;
358 djvu_document_get_page_size (EV_DOCUMENT(djvu_document), rc->page,
359 &page_width, &page_height);
361 if (rc->rotation == 90 || rc->rotation == 270) {
362 *width = (gint) (page_height * rc->scale);
363 *height = (gint) (page_width * rc->scale);
365 *width = (gint) (page_width * rc->scale);
366 *height = (gint) (page_height * rc->scale);
371 djvu_document_thumbnails_get_thumbnail (EvDocumentThumbnails *document,
375 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
376 GdkPixbuf *pixbuf, *rotated_pixbuf;
377 gdouble page_width, page_height;
378 gint thumb_width, thumb_height;
381 g_return_val_if_fail (djvu_document->d_document, NULL);
383 djvu_document_get_page_size (EV_DOCUMENT(djvu_document), rc->page,
384 &page_width, &page_height);
386 thumb_width = (gint) (page_width * rc->scale);
387 thumb_height = (gint) (page_height * rc->scale);
389 pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, FALSE, 8,
390 thumb_width, thumb_height);
391 gdk_pixbuf_fill (pixbuf, 0xffffffff);
392 pixels = gdk_pixbuf_get_pixels (pixbuf);
394 while (ddjvu_thumbnail_status (djvu_document->d_document, rc->page, 1) < DDJVU_JOB_OK)
395 djvu_handle_events(djvu_document, TRUE);
397 ddjvu_thumbnail_render (djvu_document->d_document, rc->page,
398 &thumb_width, &thumb_height,
399 djvu_document->thumbs_format,
400 gdk_pixbuf_get_rowstride (pixbuf),
403 rotated_pixbuf = gdk_pixbuf_rotate_simple (pixbuf, 360 - rc->rotation);
404 g_object_unref (pixbuf);
407 GdkPixbuf *tmp_pixbuf = rotated_pixbuf;
409 rotated_pixbuf = ev_document_misc_get_thumbnail_frame (-1, -1, tmp_pixbuf);
410 g_object_unref (tmp_pixbuf);
413 return rotated_pixbuf;
417 djvu_document_document_thumbnails_iface_init (EvDocumentThumbnailsIface *iface)
419 iface->get_thumbnail = djvu_document_thumbnails_get_thumbnail;
420 iface->get_dimensions = djvu_document_thumbnails_get_dimensions;
423 /* EvFileExporterIface */
425 djvu_document_file_exporter_format_supported (EvFileExporter *exporter,
426 EvFileExporterFormat format)
428 return (format == EV_FILE_FORMAT_PS); // only exporting to PS is implemented.
432 djvu_document_file_exporter_begin (EvFileExporter *exporter,
433 EvFileExporterFormat format,
434 const char *filename, /* for storing the temp ps file */
441 DjvuDocument *djvu_document = DJVU_DOCUMENT (exporter);
443 if (djvu_document->ps_filename)
444 g_free (djvu_document->ps_filename);
445 djvu_document->ps_filename = g_strdup(filename);
447 g_string_assign(djvu_document->opts, "-page=");
451 djvu_document_file_exporter_do_page (EvFileExporter *exporter,
454 DjvuDocument *djvu_document = DJVU_DOCUMENT (exporter);
456 g_string_append_printf(djvu_document->opts, "%d,", (rc->page) + 1);
460 djvu_document_file_exporter_end (EvFileExporter *exporter)
463 const char *d_optv[d_optc];
465 DjvuDocument *djvu_document = DJVU_DOCUMENT (exporter);
467 FILE *fn = fopen(djvu_document->ps_filename, "w");
469 g_warning(_("Cannot open file ā%sā."), djvu_document->ps_filename);
473 d_optv[0] = djvu_document->opts->str;
475 ddjvu_job_t * job = ddjvu_document_print(djvu_document->d_document, fn, d_optc, d_optv);
476 while (!ddjvu_job_done(job) ) {
477 djvu_handle_events (djvu_document, TRUE);
484 djvu_document_file_exporter_iface_init (EvFileExporterIface *iface)
486 iface->format_supported = djvu_document_file_exporter_format_supported;
487 iface->begin = djvu_document_file_exporter_begin;
488 iface->do_page = djvu_document_file_exporter_do_page;
489 iface->end = djvu_document_file_exporter_end;
493 djvu_document_init (DjvuDocument *djvu_document)
495 guint masks[4] = { 0xff0000, 0xff00, 0xff, 0xff000000 };
497 djvu_document->d_context = ddjvu_context_create ("Evince");
498 djvu_document->d_format = ddjvu_format_create (DDJVU_FORMAT_RGBMASK32, 4, masks);
499 ddjvu_format_set_row_order (djvu_document->d_format, 1);
501 djvu_document->thumbs_format = ddjvu_format_create (DDJVU_FORMAT_RGB24, 0, 0);
502 ddjvu_format_set_row_order (djvu_document->thumbs_format, 1);
504 djvu_document->ps_filename = NULL;
505 djvu_document->opts = g_string_new ("");
507 djvu_document->d_document = NULL;
511 djvu_document_find_begin (EvDocumentFind *document,
513 const char *search_string,
514 gboolean case_sensitive)
516 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
518 if (djvu_document->search &&
519 strcmp (search_string, djvu_text_get_text (djvu_document->search)) == 0)
522 if (djvu_document->search)
523 djvu_text_free (djvu_document->search);
525 djvu_document->search = djvu_text_new (djvu_document,
532 djvu_document_find_get_n_results (EvDocumentFind *document_find, int page)
534 DjvuText *search = DJVU_DOCUMENT (document_find)->search;
537 return djvu_text_n_results (search, page);
544 djvu_document_find_get_result (EvDocumentFind *document_find,
547 EvRectangle *rectangle)
549 DjvuDocument *djvu_document = DJVU_DOCUMENT (document_find);
550 DjvuText *search = djvu_document->search;
552 double width, height;
557 r = djvu_text_get_result (search, page, n_result);
561 djvu_document_get_page_size (EV_DOCUMENT (djvu_document),
562 page, &width, &height);
563 rectangle->x1 = r->x1 * SCALE_FACTOR;
564 rectangle->y1 = height - r->y2 * SCALE_FACTOR;
565 rectangle->x2 = r->x2 * SCALE_FACTOR;
566 rectangle->y2 = height - r->y1 * SCALE_FACTOR;
572 djvu_document_find_page_has_results (EvDocumentFind *document_find,
575 DjvuText *search = DJVU_DOCUMENT (document_find)->search;
577 return search && djvu_text_has_results (search, page);
581 djvu_document_find_get_progress (EvDocumentFind *document_find)
583 DjvuText *search = DJVU_DOCUMENT (document_find)->search;
585 if (search == NULL) {
589 return djvu_text_get_progress (search);
593 djvu_document_find_cancel (EvDocumentFind *document)
595 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
597 if (djvu_document->search) {
598 djvu_text_free (djvu_document->search);
599 djvu_document->search = NULL;
604 djvu_document_find_iface_init (EvDocumentFindIface *iface)
606 iface->begin = djvu_document_find_begin;
607 iface->get_n_results = djvu_document_find_get_n_results;
608 iface->get_result = djvu_document_find_get_result;
609 iface->page_has_results = djvu_document_find_page_has_results;
610 iface->get_progress = djvu_document_find_get_progress;
611 iface->cancel = djvu_document_find_cancel;
615 djvu_document_links_get_links (EvDocumentLinks *document_links,
618 return djvu_links_get_links (document_links, page, SCALE_FACTOR);
622 djvu_document_document_links_iface_init (EvDocumentLinksIface *iface)
624 iface->has_document_links = djvu_links_has_document_links;
625 iface->get_links_model = djvu_links_get_links_model;
626 iface->get_links = djvu_document_links_get_links;
627 iface->find_link_dest = djvu_links_find_link_dest;