From c3e1500a4815225f08e1b20dd066559e8c92c280 Mon Sep 17 00:00:00 2001 From: Nickolay V. Shmyrev Date: Thu, 07 Apr 2005 15:28:06 +0000 Subject: Recent files support. 2005-04-07 Nickolay V. Shmyrev * cut-n-paste/recent-files/Makefile.am: * data/evince-ui.xml, shell/Makefile.am: * shell/ev-application.c, shell/ev-application.h: * shell/ev-window.c: Recent files support. * configure.ac: Added "ru" to ALL_LINGUAS. * dvju: new backend to support DJVU files. * dvi: new backend to support DVI. * configure.ac, Makefile.am, shell/Makefile.am, ev-window.c: * ev-application.c: Support for new backends. * help, ev-window.c, main.c shell/Makefile.am: --- (limited to 'djvu/djvu-document.c') diff --git a/djvu/djvu-document.c b/djvu/djvu-document.c new file mode 100644 index 0000000..1b155bf --- /dev/null +++ b/djvu/djvu-document.c @@ -0,0 +1,320 @@ +/* -*- 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 "ev-document-thumbnails.h" +#include "ev-document-misc.h" + +#include +#include +#include + +#define SCALE_FACTOR 0.2 + +enum { + PROP_0, + PROP_TITLE +}; + +struct _DjvuDocumentClass +{ + GObjectClass parent_class; +}; + +struct _DjvuDocument +{ + GObject parent_instance; + + ddjvu_context_t *d_context; + ddjvu_document_t *d_document; + ddjvu_format_t *d_format; +}; + +typedef struct _DjvuDocumentClass DjvuDocumentClass; + +static void djvu_document_document_iface_init (EvDocumentIface *iface); +static void djvu_document_document_thumbnails_iface_init (EvDocumentThumbnailsIface *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) + }); + +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)) + ddjvu_message_wait (djvu_document->d_context); + + return TRUE; +} + + +static gboolean +djvu_document_save (EvDocument *document, + const char *uri, + GError **error) +{ + g_warning ("djvu_document_save not implemented"); /* FIXME */ + return TRUE; +} + +static 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_page_t *d_page; + + g_return_if_fail (djvu_document->d_document); + + d_page = ddjvu_page_create_by_pageno (djvu_document->d_document, page); + + while (!ddjvu_page_decoding_done (d_page)) + ddjvu_message_wait (djvu_document->d_context); + + if (width) + *width = ddjvu_page_get_width (d_page) * SCALE_FACTOR; + if (height) + *height = ddjvu_page_get_height (d_page) * SCALE_FACTOR; + + ddjvu_page_release (d_page); +} + +static GdkPixbuf * +djvu_document_render_pixbuf (EvDocument *document, + int page, gdouble scale) +{ + DjvuDocument *djvu_document = DJVU_DOCUMENT (document); + GdkPixbuf *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, page); + + while (!ddjvu_page_decoding_done (d_page)) + ddjvu_message_wait (djvu_document->d_context); + + page_width = ddjvu_page_get_width (d_page) * scale * SCALE_FACTOR; + page_height = ddjvu_page_get_height (d_page) * 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), + gdk_pixbuf_get_pixels (pixbuf)); + + + return 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_OBJECT_CLASS (djvu_document_parent_class)->finalize (object); +} + +static void +djvu_document_set_property (GObject *object, + guint prop_id, + const GValue *value, + GParamSpec *pspec) +{ + switch (prop_id) + { + case PROP_TITLE: + /* read only */ + break; + } +} + +static void +djvu_document_get_property (GObject *object, + guint prop_id, + GValue *value, + GParamSpec *pspec) +{ + switch (prop_id) + { + case PROP_TITLE: + g_value_set_string (value, NULL); + break; + } +} + +static void +djvu_document_class_init (DjvuDocumentClass *klass) +{ + GObjectClass *gobject_class = G_OBJECT_CLASS (klass); + + gobject_class->finalize = djvu_document_finalize; + gobject_class->get_property = djvu_document_get_property; + gobject_class->set_property = djvu_document_set_property; + + g_object_class_override_property (gobject_class, PROP_TITLE, "title"); +} + +static char * +djvu_document_get_text (EvDocument *document, gint page, EvRectangle *rect) +{ + /* FIXME this method should not be in EvDocument */ + g_warning ("djvu_document_get_text not implemented"); + return NULL; +} + +static void +djvu_document_document_iface_init (EvDocumentIface *iface) +{ + iface->load = djvu_document_load; + iface->save = djvu_document_save; + 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; +} + +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 width, + gboolean border) +{ + DjvuDocument *djvu_document = DJVU_DOCUMENT (document); + GdkPixbuf *pixbuf; + gint thumb_width, thumb_height; + + gchar *pixels; + + g_return_val_if_fail (djvu_document->d_document, NULL); + + djvu_document_thumbnails_get_dimensions (document, page, width, &thumb_width, &thumb_height); + + if (border) { + pixbuf = ev_document_misc_get_thumbnail_frame (thumb_width, thumb_height, NULL); + pixels = gdk_pixbuf_get_pixels (pixbuf) + gdk_pixbuf_get_rowstride (pixbuf) + 4; + } else { + pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 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) + ddjvu_message_wait (djvu_document->d_context); + + ddjvu_thumbnail_render (djvu_document->d_document, page, + &thumb_width, &thumb_height, + djvu_document->d_format, + gdk_pixbuf_get_rowstride (pixbuf), + pixels); + + return 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; +} + -- cgit v0.9.1