+++ /dev/null
-/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8; c-indent-level: 8 -*- */
-/*
- * Copyright (C) 2005, Nickolay V. Shmyrev <nshmyrev@yandex.ru>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
- */
-
-#include "djvu-document.h"
-#include "djvu-text.h"
-#include "djvu-links.h"
-#include "djvu-document-private.h"
-#include "ev-document-thumbnails.h"
-#include "ev-document-misc.h"
-#include "ev-document-find.h"
-#include "ev-document-links.h"
-
-#include <libdjvu/ddjvuapi.h>
-#include <libdjvu/miniexp.h>
-#include <gtk/gtk.h>
-#include <gdk-pixbuf/gdk-pixbuf-core.h>
-#include <glib/gunicode.h>
-#include <string.h>
-
-#define SCALE_FACTOR 0.2
-
-enum {
- PROP_0,
- PROP_TITLE
-};
-
-struct _DjvuDocumentClass
-{
- GObjectClass parent_class;
-};
-
-typedef struct _DjvuDocumentClass DjvuDocumentClass;
-
-static void djvu_document_document_iface_init (EvDocumentIface *iface);
-static void djvu_document_document_thumbnails_iface_init (EvDocumentThumbnailsIface *iface);
-static void djvu_document_find_iface_init (EvDocumentFindIface *iface);
-static void djvu_document_document_links_iface_init (EvDocumentLinksIface *iface);
-
-G_DEFINE_TYPE_WITH_CODE
- (DjvuDocument, djvu_document, G_TYPE_OBJECT,
- {
- G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT, djvu_document_document_iface_init);
- G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_THUMBNAILS, djvu_document_document_thumbnails_iface_init)
- G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_FIND, djvu_document_find_iface_init);
- G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_LINKS, djvu_document_document_links_iface_init);
- });
-
-
-void
-djvu_handle_events (DjvuDocument *djvu_document, int wait)
-{
- ddjvu_context_t *ctx = djvu_document->d_context;
- const ddjvu_message_t *msg;
- if (!ctx)
- return;
- if (wait)
- msg = ddjvu_message_wait (ctx);
- while ((msg = ddjvu_message_peek (ctx))) {
- switch (msg->m_any.tag) {
- case DDJVU_ERROR:
- g_warning ("DjvuLibre error: %s",
- msg->m_error.message);
- if (msg->m_error.filename)
- g_warning ("DjvuLibre error: %s:%d",
- msg->m_error.filename,
- msg->m_error.lineno);
- default:
- break;
- }
- ddjvu_message_pop (ctx);
- }
-}
-
-static gboolean
-djvu_document_load (EvDocument *document,
- const char *uri,
- GError **error)
-{
- DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
- ddjvu_document_t *doc;
- gchar *filename;
-
- /* FIXME: We could actually load uris */
- filename = g_filename_from_uri (uri, NULL, error);
- if (!filename)
- return FALSE;
-
- doc = ddjvu_document_create_by_filename (djvu_document->d_context, filename, TRUE);
-
- if (!doc) return FALSE;
-
- if (djvu_document->d_document)
- ddjvu_document_release (djvu_document->d_document);
-
- djvu_document->d_document = doc;
-
- while (!ddjvu_document_decoding_done (djvu_document->d_document))
- djvu_handle_events(djvu_document, TRUE);
- g_free (djvu_document->uri);
- djvu_document->uri = g_strdup (uri);
-
- return TRUE;
-}
-
-
-static gboolean
-djvu_document_save (EvDocument *document,
- const char *uri,
- GError **error)
-{
- DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
-
- return ev_xfer_uri_simple (djvu_document->uri, uri, error);
-}
-
-int
-djvu_document_get_n_pages (EvDocument *document)
-{
- DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
-
- g_return_val_if_fail (djvu_document->d_document, 0);
-
- return ddjvu_document_get_pagenum (djvu_document->d_document);
-}
-
-static void
-djvu_document_get_page_size (EvDocument *document,
- int page,
- double *width,
- double *height)
-{
- DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
- ddjvu_pageinfo_t info;
- ddjvu_status_t r;
-
- g_return_if_fail (djvu_document->d_document);
-
- while ((r = ddjvu_document_get_pageinfo(djvu_document->d_document, page, &info)) < DDJVU_JOB_OK)
- djvu_handle_events(djvu_document, TRUE);
-
- if (r >= DDJVU_JOB_FAILED)
- djvu_handle_events(djvu_document, TRUE);
-
- *width = info.width * SCALE_FACTOR;
- *height = info.height * SCALE_FACTOR;
-}
-
-static GdkPixbuf *
-djvu_document_render_pixbuf (EvDocument *document,
- EvRenderContext *rc)
-{
- DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
- GdkPixbuf *pixbuf;
- GdkPixbuf *rotated_pixbuf;
-
- ddjvu_rect_t rrect;
- ddjvu_rect_t prect;
- ddjvu_page_t *d_page;
-
- double page_width, page_height;
-
- d_page = ddjvu_page_create_by_pageno (djvu_document->d_document, rc->page);
-
- while (!ddjvu_page_decoding_done (d_page))
- djvu_handle_events(djvu_document, TRUE);
-
- page_width = ddjvu_page_get_width (d_page) * rc->scale * SCALE_FACTOR;
- page_height = ddjvu_page_get_height (d_page) * rc->scale * SCALE_FACTOR;
-
- pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, FALSE, 8, page_width, page_height);
-
- prect.x = 0; prect.y = 0;
- prect.w = page_width; prect.h = page_height;
- rrect = prect;
-
- ddjvu_page_render(d_page, DDJVU_RENDER_COLOR,
- &prect,
- &rrect,
- djvu_document->d_format,
- gdk_pixbuf_get_rowstride (pixbuf),
- (gchar *)gdk_pixbuf_get_pixels (pixbuf));
-
- rotated_pixbuf = gdk_pixbuf_rotate_simple (pixbuf, 360 - rc->rotation);
- g_object_unref (pixbuf);
-
- return rotated_pixbuf;
-}
-
-static void
-djvu_document_finalize (GObject *object)
-{
- DjvuDocument *djvu_document = DJVU_DOCUMENT (object);
-
- if (djvu_document->d_document)
- ddjvu_document_release (djvu_document->d_document);
-
- ddjvu_context_release (djvu_document->d_context);
- ddjvu_format_release (djvu_document->d_format);
- g_free (djvu_document->uri);
-
- G_OBJECT_CLASS (djvu_document_parent_class)->finalize (object);
-}
-
-static void
-djvu_document_class_init (DjvuDocumentClass *klass)
-{
- GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
-
- gobject_class->finalize = djvu_document_finalize;
-}
-
-static gboolean
-djvu_document_can_get_text (EvDocument *document)
-{
- return TRUE;
-}
-
-
-static char *
-djvu_document_get_text (EvDocument *document, int page, EvRectangle *rect)
-{
- DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
- double width, height;
- EvRectangle rectangle;
- char* text;
-
- djvu_document_get_page_size (document, page, &width, &height);
- rectangle.x1 = rect->x1 / SCALE_FACTOR;
- rectangle.y1 = (height - rect->y2) / SCALE_FACTOR;
- rectangle.x2 = rect->x2 / SCALE_FACTOR;
- rectangle.y2 = (height - rect->y1) / SCALE_FACTOR;
-
- text = djvu_text_copy (djvu_document, page, &rectangle);
-
- if (text == NULL)
- text = g_strdup ("");
-
- return text;
-}
-
-static EvDocumentInfo *
-djvu_document_get_info (EvDocument *document)
-{
- EvDocumentInfo *info;
-
- info = g_new0 (EvDocumentInfo, 1);
-
- return info;
-}
-
-static void
-djvu_document_document_iface_init (EvDocumentIface *iface)
-{
- iface->load = djvu_document_load;
- iface->save = djvu_document_save;
- iface->can_get_text = djvu_document_can_get_text;
- iface->get_text = djvu_document_get_text;
- iface->get_n_pages = djvu_document_get_n_pages;
- iface->get_page_size = djvu_document_get_page_size;
- iface->render_pixbuf = djvu_document_render_pixbuf;
- iface->get_info = djvu_document_get_info;
-}
-
-static void
-djvu_document_thumbnails_get_dimensions (EvDocumentThumbnails *document,
- gint page,
- gint suggested_width,
- gint *width,
- gint *height)
-{
- DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
- gdouble p_width, p_height;
- gdouble page_ratio;
-
- djvu_document_get_page_size (EV_DOCUMENT(djvu_document), page, &p_width, &p_height);
-
- page_ratio = p_height / p_width;
- *width = suggested_width;
- *height = (gint) (suggested_width * page_ratio);
-
- return;
-}
-
-static GdkPixbuf *
-djvu_document_thumbnails_get_thumbnail (EvDocumentThumbnails *document,
- gint page,
- gint rotation,
- gint width,
- gboolean border)
-{
- DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
- GdkPixbuf *pixbuf, *rotated_pixbuf;
- gint thumb_width, thumb_height;
-
- guchar *pixels;
-
- g_return_val_if_fail (djvu_document->d_document, NULL);
-
- djvu_document_thumbnails_get_dimensions (document, page, width, &thumb_width, &thumb_height);
-
- pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, FALSE, 8,
- thumb_width, thumb_height);
- gdk_pixbuf_fill (pixbuf, 0xffffffff);
- pixels = gdk_pixbuf_get_pixels (pixbuf);
-
- while (ddjvu_thumbnail_status (djvu_document->d_document, page, 1) < DDJVU_JOB_OK)
- djvu_handle_events(djvu_document, TRUE);
-
- ddjvu_thumbnail_render (djvu_document->d_document, page,
- &thumb_width, &thumb_height,
- djvu_document->d_format,
- gdk_pixbuf_get_rowstride (pixbuf),
- (gchar *)pixels);
-
- rotated_pixbuf = gdk_pixbuf_rotate_simple (pixbuf, 360 - rotation);
- g_object_unref (pixbuf);
-
- if (border) {
- GdkPixbuf *tmp_pixbuf = rotated_pixbuf;
- rotated_pixbuf = ev_document_misc_get_thumbnail_frame (-1, -1, 0, tmp_pixbuf);
- g_object_unref (tmp_pixbuf);
- }
-
- return rotated_pixbuf;
-}
-
-static void
-djvu_document_document_thumbnails_iface_init (EvDocumentThumbnailsIface *iface)
-{
- iface->get_thumbnail = djvu_document_thumbnails_get_thumbnail;
- iface->get_dimensions = djvu_document_thumbnails_get_dimensions;
-}
-
-static void
-djvu_document_init (DjvuDocument *djvu_document)
-{
- djvu_document->d_context = ddjvu_context_create ("Evince");
- djvu_document->d_format = ddjvu_format_create (DDJVU_FORMAT_RGB24, 0, 0);
- ddjvu_format_set_row_order (djvu_document->d_format,1);
-
- djvu_document->d_document = NULL;
-}
-
-static void
-djvu_document_find_begin (EvDocumentFind *document,
- int page,
- const char *search_string,
- gboolean case_sensitive)
-{
- DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
-
- if (djvu_document->search &&
- strcmp (search_string, djvu_text_get_text (djvu_document->search)) == 0)
- return;
-
- if (djvu_document->search)
- djvu_text_free (djvu_document->search);
-
- djvu_document->search = djvu_text_new (djvu_document,
- page,
- case_sensitive,
- search_string);
-}
-
-static int
-djvu_document_find_get_n_results (EvDocumentFind *document_find, int page)
-{
- DjvuText *search = DJVU_DOCUMENT (document_find)->search;
-
- if (search) {
- return djvu_text_n_results (search, page);
- } else {
- return 0;
- }
-}
-
-static gboolean
-djvu_document_find_get_result (EvDocumentFind *document_find,
- int page,
- int n_result,
- EvRectangle *rectangle)
-{
- DjvuDocument *djvu_document = DJVU_DOCUMENT (document_find);
- DjvuText *search = djvu_document->search;
- EvRectangle *r;
- double width, height;
-
- if (search == NULL)
- return FALSE;
-
- r = djvu_text_get_result (search, page, n_result);
- if (r == NULL)
- return FALSE;
-
- djvu_document_get_page_size (EV_DOCUMENT (djvu_document),
- page, &width, &height);
- rectangle->x1 = r->x1 * SCALE_FACTOR;
- rectangle->y1 = height - r->y2 * SCALE_FACTOR;
- rectangle->x2 = r->x2 * SCALE_FACTOR;
- rectangle->y2 = height - r->y1 * SCALE_FACTOR;
-
- return TRUE;
-}
-
-static int
-djvu_document_find_page_has_results (EvDocumentFind *document_find,
- int page)
-{
- DjvuText *search = DJVU_DOCUMENT (document_find)->search;
-
- return search && djvu_text_has_results (search, page);
-}
-
-static double
-djvu_document_find_get_progress (EvDocumentFind *document_find)
-{
- DjvuText *search = DJVU_DOCUMENT (document_find)->search;
-
- if (search == NULL) {
- return 0;
- }
-
- return djvu_text_get_progress (search);
-}
-
-static void
-djvu_document_find_cancel (EvDocumentFind *document)
-{
- DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
-
- if (djvu_document->search) {
- djvu_text_free (djvu_document->search);
- djvu_document->search = NULL;
- }
-}
-
-static void
-djvu_document_find_iface_init (EvDocumentFindIface *iface)
-{
- iface->begin = djvu_document_find_begin;
- iface->get_n_results = djvu_document_find_get_n_results;
- iface->get_result = djvu_document_find_get_result;
- iface->page_has_results = djvu_document_find_page_has_results;
- iface->get_progress = djvu_document_find_get_progress;
- iface->cancel = djvu_document_find_cancel;
-}
-
-static GList *
-djvu_document_links_get_links (EvDocumentLinks *document_links,
- gint page)
-{
- return djvu_links_get_links (document_links, page, SCALE_FACTOR);
-}
-
-static void
-djvu_document_document_links_iface_init (EvDocumentLinksIface *iface)
-{
- iface->has_document_links = djvu_links_has_document_links;
- iface->get_links_model = djvu_links_get_links_model;
- iface->get_links = djvu_document_links_get_links;
- iface->find_link_dest = djvu_links_find_link_dest;
-}
https://www.fi.muni.cz/~kas/git / evince.git / blobdiff