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 G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_THUMBNAILS, djvu_document_document_thumbnails_iface_init);
64 G_IMPLEMENT_INTERFACE (EV_TYPE_FILE_EXPORTER, djvu_document_file_exporter_iface_init);
65 G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_FIND, djvu_document_find_iface_init);
66 G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_LINKS, djvu_document_document_links_iface_init);
67 G_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 djvu_document_get_page_size (EvDocument *document,
203 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
204 ddjvu_pageinfo_t info;
207 g_return_if_fail (djvu_document->d_document);
209 while ((r = ddjvu_document_get_pageinfo(djvu_document->d_document, page, &info)) < DDJVU_JOB_OK)
210 djvu_handle_events(djvu_document, TRUE);
212 if (r >= DDJVU_JOB_FAILED)
213 djvu_handle_events(djvu_document, TRUE);
215 *width = info.width * SCALE_FACTOR;
216 *height = info.height * SCALE_FACTOR;
219 static cairo_surface_t *
220 djvu_document_render (EvDocument *document,
223 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
224 cairo_surface_t *surface;
229 ddjvu_page_t *d_page;
230 ddjvu_page_rotation_t rotation;
231 double page_width, page_height, tmp;
232 static const cairo_user_data_key_t key;
234 d_page = ddjvu_page_create_by_pageno (djvu_document->d_document, rc->page);
236 while (!ddjvu_page_decoding_done (d_page))
237 djvu_handle_events(djvu_document, TRUE);
239 page_width = ddjvu_page_get_width (d_page) * rc->scale * SCALE_FACTOR + 0.5;
240 page_height = ddjvu_page_get_height (d_page) * rc->scale * SCALE_FACTOR + 0.5;
242 switch (rc->rotation) {
244 rotation = DDJVU_ROTATE_90;
246 page_height = page_width;
251 rotation = DDJVU_ROTATE_180;
255 rotation = DDJVU_ROTATE_270;
257 page_height = page_width;
262 rotation = DDJVU_ROTATE_0;
265 rowstride = page_width * 4;
266 pixels = (gchar *) g_malloc (page_height * rowstride);
267 surface = cairo_image_surface_create_for_data ((guchar *)pixels,
272 cairo_surface_set_user_data (surface, &key,
273 pixels, (cairo_destroy_func_t)g_free);
276 prect.w = page_width;
277 prect.h = page_height;
280 ddjvu_page_set_rotation (d_page, rotation);
282 ddjvu_page_render (d_page, DDJVU_RENDER_COLOR,
285 djvu_document->d_format,
293 djvu_document_finalize (GObject *object)
295 DjvuDocument *djvu_document = DJVU_DOCUMENT (object);
297 if (djvu_document->search)
298 djvu_text_free (djvu_document->search);
300 if (djvu_document->d_document)
301 ddjvu_document_release (djvu_document->d_document);
303 if (djvu_document->opts)
304 g_string_free (djvu_document->opts, TRUE);
306 if (djvu_document->ps_filename)
307 g_free (djvu_document->ps_filename);
309 ddjvu_context_release (djvu_document->d_context);
310 ddjvu_format_release (djvu_document->d_format);
311 ddjvu_format_release (djvu_document->thumbs_format);
312 g_free (djvu_document->uri);
314 G_OBJECT_CLASS (djvu_document_parent_class)->finalize (object);
318 djvu_document_class_init (DjvuDocumentClass *klass)
320 GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
322 gobject_class->finalize = djvu_document_finalize;
325 static EvDocumentInfo *
326 djvu_document_get_info (EvDocument *document)
328 EvDocumentInfo *info;
330 info = g_new0 (EvDocumentInfo, 1);
336 djvu_document_document_iface_init (EvDocumentIface *iface)
338 iface->load = djvu_document_load;
339 iface->save = djvu_document_save;
340 iface->get_n_pages = djvu_document_get_n_pages;
341 iface->get_page_size = djvu_document_get_page_size;
342 iface->render = djvu_document_render;
343 iface->get_info = djvu_document_get_info;
347 djvu_selection_get_selected_text (EvSelection *selection,
349 EvSelectionStyle style,
352 DjvuDocument *djvu_document = DJVU_DOCUMENT (selection);
353 double width, height;
354 EvRectangle rectangle;
357 djvu_document_get_page_size (EV_DOCUMENT (djvu_document),
358 rc->page, &width, &height);
359 rectangle.x1 = points->x1 / SCALE_FACTOR;
360 rectangle.y1 = (height - points->y2) / SCALE_FACTOR;
361 rectangle.x2 = points->x2 / SCALE_FACTOR;
362 rectangle.y2 = (height - points->y1) / SCALE_FACTOR;
364 text = djvu_text_copy (djvu_document, rc->page, &rectangle);
367 text = g_strdup ("");
373 djvu_selection_iface_init (EvSelectionIface *iface)
375 iface->get_selected_text = djvu_selection_get_selected_text;
379 djvu_document_thumbnails_get_dimensions (EvDocumentThumbnails *document,
384 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
385 gdouble page_width, page_height;
387 djvu_document_get_page_size (EV_DOCUMENT(djvu_document), rc->page,
388 &page_width, &page_height);
390 if (rc->rotation == 90 || rc->rotation == 270) {
391 *width = (gint) (page_height * rc->scale);
392 *height = (gint) (page_width * rc->scale);
394 *width = (gint) (page_width * rc->scale);
395 *height = (gint) (page_height * rc->scale);
400 djvu_document_thumbnails_get_thumbnail (EvDocumentThumbnails *document,
404 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
405 GdkPixbuf *pixbuf, *rotated_pixbuf;
406 gdouble page_width, page_height;
407 gint thumb_width, thumb_height;
410 g_return_val_if_fail (djvu_document->d_document, NULL);
412 djvu_document_get_page_size (EV_DOCUMENT(djvu_document), rc->page,
413 &page_width, &page_height);
415 thumb_width = (gint) (page_width * rc->scale);
416 thumb_height = (gint) (page_height * rc->scale);
418 pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, FALSE, 8,
419 thumb_width, thumb_height);
420 gdk_pixbuf_fill (pixbuf, 0xffffffff);
421 pixels = gdk_pixbuf_get_pixels (pixbuf);
423 while (ddjvu_thumbnail_status (djvu_document->d_document, rc->page, 1) < DDJVU_JOB_OK)
424 djvu_handle_events(djvu_document, TRUE);
426 ddjvu_thumbnail_render (djvu_document->d_document, rc->page,
427 &thumb_width, &thumb_height,
428 djvu_document->thumbs_format,
429 gdk_pixbuf_get_rowstride (pixbuf),
432 rotated_pixbuf = gdk_pixbuf_rotate_simple (pixbuf, 360 - rc->rotation);
433 g_object_unref (pixbuf);
436 GdkPixbuf *tmp_pixbuf = rotated_pixbuf;
438 rotated_pixbuf = ev_document_misc_get_thumbnail_frame (-1, -1, tmp_pixbuf);
439 g_object_unref (tmp_pixbuf);
442 return rotated_pixbuf;
446 djvu_document_document_thumbnails_iface_init (EvDocumentThumbnailsIface *iface)
448 iface->get_thumbnail = djvu_document_thumbnails_get_thumbnail;
449 iface->get_dimensions = djvu_document_thumbnails_get_dimensions;
452 /* EvFileExporterIface */
454 djvu_document_file_exporter_begin (EvFileExporter *exporter,
455 EvFileExporterContext *fc)
457 DjvuDocument *djvu_document = DJVU_DOCUMENT (exporter);
459 if (djvu_document->ps_filename)
460 g_free (djvu_document->ps_filename);
461 djvu_document->ps_filename = g_strdup (fc->filename);
463 g_string_assign (djvu_document->opts, "-page=");
467 djvu_document_file_exporter_do_page (EvFileExporter *exporter,
470 DjvuDocument *djvu_document = DJVU_DOCUMENT (exporter);
472 g_string_append_printf (djvu_document->opts, "%d,", (rc->page) + 1);
476 djvu_document_file_exporter_end (EvFileExporter *exporter)
479 const char *d_optv[d_optc];
481 DjvuDocument *djvu_document = DJVU_DOCUMENT (exporter);
483 FILE *fn = fopen (djvu_document->ps_filename, "w");
485 g_warning ("Cannot open file ā%sā.", djvu_document->ps_filename);
489 d_optv[0] = djvu_document->opts->str;
491 ddjvu_job_t * job = ddjvu_document_print(djvu_document->d_document, fn, d_optc, d_optv);
492 while (!ddjvu_job_done(job)) {
493 djvu_handle_events (djvu_document, TRUE);
499 static EvFileExporterCapabilities
500 djvu_document_file_exporter_get_capabilities (EvFileExporter *exporter)
502 return EV_FILE_EXPORTER_CAN_PAGE_SET |
503 EV_FILE_EXPORTER_CAN_COPIES |
504 EV_FILE_EXPORTER_CAN_COLLATE |
505 EV_FILE_EXPORTER_CAN_REVERSE |
506 EV_FILE_EXPORTER_CAN_GENERATE_PS;
510 djvu_document_file_exporter_iface_init (EvFileExporterIface *iface)
512 iface->begin = djvu_document_file_exporter_begin;
513 iface->do_page = djvu_document_file_exporter_do_page;
514 iface->end = djvu_document_file_exporter_end;
515 iface->get_capabilities = djvu_document_file_exporter_get_capabilities;
519 djvu_document_init (DjvuDocument *djvu_document)
521 guint masks[4] = { 0xff0000, 0xff00, 0xff, 0xff000000 };
523 djvu_document->d_context = ddjvu_context_create ("Evince");
524 djvu_document->d_format = ddjvu_format_create (DDJVU_FORMAT_RGBMASK32, 4, masks);
525 ddjvu_format_set_row_order (djvu_document->d_format, 1);
527 djvu_document->thumbs_format = ddjvu_format_create (DDJVU_FORMAT_RGB24, 0, 0);
528 ddjvu_format_set_row_order (djvu_document->thumbs_format, 1);
530 djvu_document->ps_filename = NULL;
531 djvu_document->opts = g_string_new ("");
533 djvu_document->d_document = NULL;
537 djvu_document_find_begin (EvDocumentFind *document,
539 const char *search_string,
540 gboolean case_sensitive)
542 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
544 if (djvu_document->search &&
545 strcmp (search_string, djvu_text_get_text (djvu_document->search)) == 0)
548 if (djvu_document->search)
549 djvu_text_free (djvu_document->search);
551 djvu_document->search = djvu_text_new (djvu_document,
558 djvu_document_find_get_n_results (EvDocumentFind *document_find, int page)
560 DjvuText *search = DJVU_DOCUMENT (document_find)->search;
563 return djvu_text_n_results (search, page);
570 djvu_document_find_get_result (EvDocumentFind *document_find,
573 EvRectangle *rectangle)
575 DjvuDocument *djvu_document = DJVU_DOCUMENT (document_find);
576 DjvuText *search = djvu_document->search;
578 double width, height;
583 r = djvu_text_get_result (search, page, n_result);
587 djvu_document_get_page_size (EV_DOCUMENT (djvu_document),
588 page, &width, &height);
589 rectangle->x1 = r->x1 * SCALE_FACTOR;
590 rectangle->y1 = height - r->y2 * SCALE_FACTOR;
591 rectangle->x2 = r->x2 * SCALE_FACTOR;
592 rectangle->y2 = height - r->y1 * SCALE_FACTOR;
598 djvu_document_find_page_has_results (EvDocumentFind *document_find,
601 DjvuText *search = DJVU_DOCUMENT (document_find)->search;
603 return search && djvu_text_has_results (search, page);
607 djvu_document_find_get_progress (EvDocumentFind *document_find)
609 DjvuText *search = DJVU_DOCUMENT (document_find)->search;
611 if (search == NULL) {
615 return djvu_text_get_progress (search);
619 djvu_document_find_cancel (EvDocumentFind *document)
621 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
623 if (djvu_document->search) {
624 djvu_text_free (djvu_document->search);
625 djvu_document->search = NULL;
630 djvu_document_find_iface_init (EvDocumentFindIface *iface)
632 iface->begin = djvu_document_find_begin;
633 iface->get_n_results = djvu_document_find_get_n_results;
634 iface->get_result = djvu_document_find_get_result;
635 iface->page_has_results = djvu_document_find_page_has_results;
636 iface->get_progress = djvu_document_find_get_progress;
637 iface->cancel = djvu_document_find_cancel;
641 djvu_document_links_get_links (EvDocumentLinks *document_links,
644 return djvu_links_get_links (document_links, page, SCALE_FACTOR);
648 djvu_document_document_links_iface_init (EvDocumentLinksIface *iface)
650 iface->has_document_links = djvu_links_has_document_links;
651 iface->get_links_model = djvu_links_get_links_model;
652 iface->get_links = djvu_document_links_get_links;
653 iface->find_link_dest = djvu_links_find_link_dest;