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-rw-r--r--backend/pixbuf/pixbuf-document.c208
1 files changed, 208 insertions, 0 deletions
diff --git a/backend/pixbuf/pixbuf-document.c b/backend/pixbuf/pixbuf-document.c
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+++ b/backend/pixbuf/pixbuf-document.c
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+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8; c-indent-level: 8 -*- */
+/*
+ * Copyright (C) 2004, Anders Carlsson <[email protected]>
+ *
+ * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+
+#include <config.h>
+#include <glib/gi18n-lib.h>
+
+#include "pixbuf-document.h"
+#include "ev-document-thumbnails.h"
+#include "ev-document-misc.h"
+#include "ev-file-helpers.h"
+
+struct _PixbufDocumentClass
+{
+ EvDocumentClass parent_class;
+};
+
+struct _PixbufDocument
+{
+ EvDocument parent_instance;
+
+ GdkPixbuf *pixbuf;
+
+ gchar *uri;
+};
+
+typedef struct _PixbufDocumentClass PixbufDocumentClass;
+
+static void pixbuf_document_document_thumbnails_iface_init (EvDocumentThumbnailsInterface *iface);
+
+EV_BACKEND_REGISTER_WITH_CODE (PixbufDocument, pixbuf_document,
+ {
+ EV_BACKEND_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_THUMBNAILS,
+ pixbuf_document_document_thumbnails_iface_init)
+ });
+
+static gboolean
+pixbuf_document_load (EvDocument *document,
+ const char *uri,
+ GError **error)
+{
+ PixbufDocument *pixbuf_document = PIXBUF_DOCUMENT (document);
+
+ gchar *filename;
+ GdkPixbuf *pixbuf;
+
+ /* FIXME: We could actually load uris */
+ filename = g_filename_from_uri (uri, NULL, error);
+ if (!filename)
+ return FALSE;
+
+ pixbuf = gdk_pixbuf_new_from_file (filename, error);
+
+ if (!pixbuf)
+ return FALSE;
+
+ pixbuf_document->pixbuf = pixbuf;
+ g_free (pixbuf_document->uri);
+ pixbuf_document->uri = g_strdup (uri);
+
+ return TRUE;
+}
+
+static gboolean
+pixbuf_document_save (EvDocument *document,
+ const char *uri,
+ GError **error)
+{
+ PixbufDocument *pixbuf_document = PIXBUF_DOCUMENT (document);
+
+ return ev_xfer_uri_simple (pixbuf_document->uri, uri, error);
+}
+
+static int
+pixbuf_document_get_n_pages (EvDocument *document)
+{
+ return 1;
+}
+
+static void
+pixbuf_document_get_page_size (EvDocument *document,
+ EvPage *page,
+ double *width,
+ double *height)
+{
+ PixbufDocument *pixbuf_document = PIXBUF_DOCUMENT (document);
+
+ *width = gdk_pixbuf_get_width (pixbuf_document->pixbuf);
+ *height = gdk_pixbuf_get_height (pixbuf_document->pixbuf);
+}
+
+static cairo_surface_t *
+pixbuf_document_render (EvDocument *document,
+ EvRenderContext *rc)
+{
+ PixbufDocument *pixbuf_document = PIXBUF_DOCUMENT (document);
+ GdkPixbuf *scaled_pixbuf, *rotated_pixbuf;
+ cairo_surface_t *surface;
+
+ scaled_pixbuf = gdk_pixbuf_scale_simple (
+ pixbuf_document->pixbuf,
+ (gdk_pixbuf_get_width (pixbuf_document->pixbuf) * rc->scale) + 0.5,
+ (gdk_pixbuf_get_height (pixbuf_document->pixbuf) * rc->scale) + 0.5,
+ GDK_INTERP_BILINEAR);
+
+ rotated_pixbuf = gdk_pixbuf_rotate_simple (scaled_pixbuf, 360 - rc->rotation);
+ g_object_unref (scaled_pixbuf);
+
+ surface = ev_document_misc_surface_from_pixbuf (rotated_pixbuf);
+ g_object_unref (rotated_pixbuf);
+
+ return surface;
+}
+
+static void
+pixbuf_document_finalize (GObject *object)
+{
+ PixbufDocument *pixbuf_document = PIXBUF_DOCUMENT (object);
+
+ g_object_unref (pixbuf_document->pixbuf);
+ g_free (pixbuf_document->uri);
+
+ G_OBJECT_CLASS (pixbuf_document_parent_class)->finalize (object);
+}
+
+static void
+pixbuf_document_class_init (PixbufDocumentClass *klass)
+{
+ GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
+ EvDocumentClass *ev_document_class = EV_DOCUMENT_CLASS (klass);
+
+ gobject_class->finalize = pixbuf_document_finalize;
+
+ ev_document_class->load = pixbuf_document_load;
+ ev_document_class->save = pixbuf_document_save;
+ ev_document_class->get_n_pages = pixbuf_document_get_n_pages;
+ ev_document_class->get_page_size = pixbuf_document_get_page_size;
+ ev_document_class->render = pixbuf_document_render;
+}
+
+static GdkPixbuf *
+pixbuf_document_thumbnails_get_thumbnail (EvDocumentThumbnails *document,
+ EvRenderContext *rc,
+ gboolean border)
+{
+ PixbufDocument *pixbuf_document = PIXBUF_DOCUMENT (document);
+ GdkPixbuf *pixbuf, *rotated_pixbuf;
+ gint width, height;
+
+ width = (gint) (gdk_pixbuf_get_width (pixbuf_document->pixbuf) * rc->scale);
+ height = (gint) (gdk_pixbuf_get_height (pixbuf_document->pixbuf) * rc->scale);
+
+ pixbuf = gdk_pixbuf_scale_simple (pixbuf_document->pixbuf,
+ width, height,
+ GDK_INTERP_BILINEAR);
+
+ rotated_pixbuf = gdk_pixbuf_rotate_simple (pixbuf, 360 - rc->rotation);
+ g_object_unref (pixbuf);
+
+ return rotated_pixbuf;
+}
+
+static void
+pixbuf_document_thumbnails_get_dimensions (EvDocumentThumbnails *document,
+ EvRenderContext *rc,
+ gint *width,
+ gint *height)
+{
+ PixbufDocument *pixbuf_document = PIXBUF_DOCUMENT (document);
+ gint p_width = gdk_pixbuf_get_width (pixbuf_document->pixbuf);
+ gint p_height = gdk_pixbuf_get_height (pixbuf_document->pixbuf);
+
+ if (rc->rotation == 90 || rc->rotation == 270) {
+ *width = (gint) (p_height * rc->scale);
+ *height = (gint) (p_width * rc->scale);
+ } else {
+ *width = (gint) (p_width * rc->scale);
+ *height = (gint) (p_height * rc->scale);
+ }
+}
+
+static void
+pixbuf_document_document_thumbnails_iface_init (EvDocumentThumbnailsInterface *iface)
+{
+ iface->get_thumbnail = pixbuf_document_thumbnails_get_thumbnail;
+ iface->get_dimensions = pixbuf_document_thumbnails_get_dimensions;
+}
+
+
+static void
+pixbuf_document_init (PixbufDocument *pixbuf_document)
+{
+}