/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8; c-indent-level: 8 -*- */ /* * Copyright (C) 2005, Nickolay V. Shmyrev * * 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 #include #include #include #include #include #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; g_return_if_fail (djvu_document->d_document); while (ddjvu_document_get_pageinfo(djvu_document->d_document, page, &info) < DDJVU_JOB_OK) 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; }