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-document-private.h"
23 #include "ev-document-thumbnails.h"
24 #include "ev-document-misc.h"
25 #include "ev-document-find.h"
27 #include <libdjvu/ddjvuapi.h>
29 #include <gdk-pixbuf/gdk-pixbuf-core.h>
30 #include <glib/gunicode.h>
33 #define SCALE_FACTOR 0.2
40 struct _DjvuDocumentClass
42 GObjectClass parent_class;
45 typedef struct _DjvuDocumentClass DjvuDocumentClass;
47 static void djvu_document_document_iface_init (EvDocumentIface *iface);
48 static void djvu_document_document_thumbnails_iface_init (EvDocumentThumbnailsIface *iface);
49 static void djvu_document_find_iface_init (EvDocumentFindIface *iface);
51 G_DEFINE_TYPE_WITH_CODE
52 (DjvuDocument, djvu_document, G_TYPE_OBJECT,
54 G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT, djvu_document_document_iface_init);
55 G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_THUMBNAILS, djvu_document_document_thumbnails_iface_init)
56 G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_FIND, djvu_document_find_iface_init);
61 djvu_handle_events (DjvuDocument *djvu_document, int wait)
63 ddjvu_context_t *ctx = djvu_document->d_context;
64 const ddjvu_message_t *msg;
68 msg = ddjvu_message_wait (ctx);
69 while ((msg = ddjvu_message_peek (ctx))) {
70 switch (msg->m_any.tag) {
72 g_warning ("DjvuLibre error: %s",
73 msg->m_error.message);
74 if (msg->m_error.filename)
75 g_warning ("DjvuLibre error: %s:%d",
76 msg->m_error.filename,
81 ddjvu_message_pop (ctx);
86 djvu_document_load (EvDocument *document,
90 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
91 ddjvu_document_t *doc;
94 /* FIXME: We could actually load uris */
95 filename = g_filename_from_uri (uri, NULL, error);
99 doc = ddjvu_document_create_by_filename (djvu_document->d_context, filename, TRUE);
101 if (!doc) return FALSE;
103 if (djvu_document->d_document)
104 ddjvu_document_release (djvu_document->d_document);
106 djvu_document->d_document = doc;
108 while (!ddjvu_document_decoding_done (djvu_document->d_document))
109 djvu_handle_events(djvu_document, TRUE);
110 g_free (djvu_document->uri);
111 djvu_document->uri = g_strdup (uri);
118 djvu_document_save (EvDocument *document,
122 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
124 return ev_xfer_uri_simple (djvu_document->uri, uri, error);
128 djvu_document_get_n_pages (EvDocument *document)
130 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
132 g_return_val_if_fail (djvu_document->d_document, 0);
134 return ddjvu_document_get_pagenum (djvu_document->d_document);
138 djvu_document_get_page_size (EvDocument *document,
143 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
144 ddjvu_pageinfo_t info;
146 g_return_if_fail (djvu_document->d_document);
148 while (ddjvu_document_get_pageinfo(djvu_document->d_document, page, &info) < DDJVU_JOB_OK)
149 djvu_handle_events(djvu_document, TRUE);
151 *width = info.width * SCALE_FACTOR;
152 *height = info.height * SCALE_FACTOR;
156 djvu_document_render_pixbuf (EvDocument *document,
159 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
161 GdkPixbuf *rotated_pixbuf;
165 ddjvu_page_t *d_page;
167 double page_width, page_height;
169 d_page = ddjvu_page_create_by_pageno (djvu_document->d_document, rc->page);
171 while (!ddjvu_page_decoding_done (d_page))
172 djvu_handle_events(djvu_document, TRUE);
174 page_width = ddjvu_page_get_width (d_page) * rc->scale * SCALE_FACTOR;
175 page_height = ddjvu_page_get_height (d_page) * rc->scale * SCALE_FACTOR;
177 pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, FALSE, 8, page_width, page_height);
179 prect.x = 0; prect.y = 0;
180 prect.w = page_width; prect.h = page_height;
183 ddjvu_page_render(d_page, DDJVU_RENDER_COLOR,
186 djvu_document->d_format,
187 gdk_pixbuf_get_rowstride (pixbuf),
188 (gchar *)gdk_pixbuf_get_pixels (pixbuf));
190 rotated_pixbuf = gdk_pixbuf_rotate_simple (pixbuf, 360 - rc->rotation);
191 g_object_unref (pixbuf);
193 return rotated_pixbuf;
197 djvu_document_finalize (GObject *object)
199 DjvuDocument *djvu_document = DJVU_DOCUMENT (object);
201 if (djvu_document->d_document)
202 ddjvu_document_release (djvu_document->d_document);
204 ddjvu_context_release (djvu_document->d_context);
205 ddjvu_format_release (djvu_document->d_format);
206 g_free (djvu_document->uri);
208 G_OBJECT_CLASS (djvu_document_parent_class)->finalize (object);
212 djvu_document_class_init (DjvuDocumentClass *klass)
214 GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
216 gobject_class->finalize = djvu_document_finalize;
220 djvu_document_can_get_text (EvDocument *document)
227 djvu_document_get_text (EvDocument *document, int page, EvRectangle *rect)
229 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
230 double width, height;
231 EvRectangle rectangle;
234 djvu_document_get_page_size (document, page, &width, &height);
235 rectangle.x1 = rect->x1 / SCALE_FACTOR;
236 rectangle.y1 = (height - rect->y2) / SCALE_FACTOR;
237 rectangle.x2 = rect->x2 / SCALE_FACTOR;
238 rectangle.y2 = (height - rect->y1) / SCALE_FACTOR;
240 text = djvu_text_copy (djvu_document, page, &rectangle);
243 text = g_strdup ("");
248 static EvDocumentInfo *
249 djvu_document_get_info (EvDocument *document)
251 EvDocumentInfo *info;
253 info = g_new0 (EvDocumentInfo, 1);
259 djvu_document_document_iface_init (EvDocumentIface *iface)
261 iface->load = djvu_document_load;
262 iface->save = djvu_document_save;
263 iface->can_get_text = djvu_document_can_get_text;
264 iface->get_text = djvu_document_get_text;
265 iface->get_n_pages = djvu_document_get_n_pages;
266 iface->get_page_size = djvu_document_get_page_size;
267 iface->render_pixbuf = djvu_document_render_pixbuf;
268 iface->get_info = djvu_document_get_info;
272 djvu_document_thumbnails_get_dimensions (EvDocumentThumbnails *document,
274 gint suggested_width,
278 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
279 gdouble p_width, p_height;
282 djvu_document_get_page_size (EV_DOCUMENT(djvu_document), page, &p_width, &p_height);
284 page_ratio = p_height / p_width;
285 *width = suggested_width;
286 *height = (gint) (suggested_width * page_ratio);
292 djvu_document_thumbnails_get_thumbnail (EvDocumentThumbnails *document,
298 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
299 GdkPixbuf *pixbuf, *rotated_pixbuf;
300 gint thumb_width, thumb_height;
304 g_return_val_if_fail (djvu_document->d_document, NULL);
306 djvu_document_thumbnails_get_dimensions (document, page, width, &thumb_width, &thumb_height);
308 pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, FALSE, 8,
309 thumb_width, thumb_height);
310 gdk_pixbuf_fill (pixbuf, 0xffffffff);
311 pixels = gdk_pixbuf_get_pixels (pixbuf);
313 while (ddjvu_thumbnail_status (djvu_document->d_document, page, 1) < DDJVU_JOB_OK)
314 djvu_handle_events(djvu_document, TRUE);
316 ddjvu_thumbnail_render (djvu_document->d_document, page,
317 &thumb_width, &thumb_height,
318 djvu_document->d_format,
319 gdk_pixbuf_get_rowstride (pixbuf),
322 rotated_pixbuf = gdk_pixbuf_rotate_simple (pixbuf, 360 - rotation);
323 g_object_unref (pixbuf);
326 GdkPixbuf *tmp_pixbuf = rotated_pixbuf;
327 rotated_pixbuf = ev_document_misc_get_thumbnail_frame (-1, -1, 0, tmp_pixbuf);
328 g_object_unref (tmp_pixbuf);
331 return rotated_pixbuf;
335 djvu_document_document_thumbnails_iface_init (EvDocumentThumbnailsIface *iface)
337 iface->get_thumbnail = djvu_document_thumbnails_get_thumbnail;
338 iface->get_dimensions = djvu_document_thumbnails_get_dimensions;
342 djvu_document_init (DjvuDocument *djvu_document)
344 djvu_document->d_context = ddjvu_context_create ("Evince");
345 djvu_document->d_format = ddjvu_format_create (DDJVU_FORMAT_RGB24, 0, 0);
346 ddjvu_format_set_row_order (djvu_document->d_format,1);
348 djvu_document->d_document = NULL;
352 djvu_document_find_begin (EvDocumentFind *document,
354 const char *search_string,
355 gboolean case_sensitive)
357 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
359 if (djvu_document->search &&
360 strcmp (search_string, djvu_text_get_text (djvu_document->search)) == 0)
363 if (djvu_document->search)
364 djvu_text_free (djvu_document->search);
366 djvu_document->search = djvu_text_new (djvu_document,
373 djvu_document_find_get_n_results (EvDocumentFind *document_find, int page)
375 DjvuText *search = DJVU_DOCUMENT (document_find)->search;
378 return djvu_text_n_results (search, page);
385 djvu_document_find_get_result (EvDocumentFind *document_find,
388 EvRectangle *rectangle)
390 DjvuDocument *djvu_document = DJVU_DOCUMENT (document_find);
391 DjvuText *search = djvu_document->search;
393 double width, height;
398 r = djvu_text_get_result (search, page, n_result);
402 djvu_document_get_page_size (EV_DOCUMENT (djvu_document),
403 page, &width, &height);
404 rectangle->x1 = r->x1 * SCALE_FACTOR;
405 rectangle->y1 = height - r->y2 * SCALE_FACTOR;
406 rectangle->x2 = r->x2 * SCALE_FACTOR;
407 rectangle->y2 = height - r->y1 * SCALE_FACTOR;
413 djvu_document_find_page_has_results (EvDocumentFind *document_find,
416 DjvuText *search = DJVU_DOCUMENT (document_find)->search;
418 return search && djvu_text_has_results (search, page);
422 djvu_document_find_get_progress (EvDocumentFind *document_find)
424 DjvuText *search = DJVU_DOCUMENT (document_find)->search;
426 if (search == NULL) {
430 return djvu_text_get_progress (search);
434 djvu_document_find_cancel (EvDocumentFind *document)
436 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
438 if (djvu_document->search) {
439 djvu_text_free (djvu_document->search);
440 djvu_document->search = NULL;
445 djvu_document_find_iface_init (EvDocumentFindIface *iface)
447 iface->begin = djvu_document_find_begin;
448 iface->get_n_results = djvu_document_find_get_n_results;
449 iface->get_result = djvu_document_find_get_result;
450 iface->page_has_results = djvu_document_find_page_has_results;
451 iface->get_progress = djvu_document_find_get_progress;
452 iface->cancel = djvu_document_find_cancel;