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/*
* Copyright © 2011 Red Hat Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
* Authors: Benjamin Otte <otte@gnome.org>
*/
#include "config.h"
#include <string.h>
#include "gtkcssimageurlprivate.h"
#include "gtkcssimagesurfaceprivate.h"
G_DEFINE_TYPE (GtkCssImageUrl, _gtk_css_image_url, GTK_TYPE_CSS_IMAGE)
static GtkCssImage *
gtk_css_image_url_load_image (GtkCssImageUrl *url)
{
GdkPixbuf *pixbuf;
GError *error = NULL;
GFileInputStream *input;
if (url->loaded_image)
return url->loaded_image;
/* We special case resources here so we can use
gdk_pixbuf_new_from_resource, which in turn has some special casing
for GdkPixdata files to avoid duplicating the memory for the pixbufs */
if (g_file_has_uri_scheme (url->file, "resource"))
{
char *uri = g_file_get_uri (url->file);
char *resource_path = g_uri_unescape_string (uri + strlen ("resource://"), NULL);
pixbuf = gdk_pixbuf_new_from_resource (resource_path, &error);
g_free (resource_path);
g_free (uri);
}
else
{
input = g_file_read (url->file, NULL, &error);
if (input != NULL)
{
pixbuf = gdk_pixbuf_new_from_stream (G_INPUT_STREAM (input), NULL, &error);
g_object_unref (input);
}
else
{
pixbuf = NULL;
}
}
if (pixbuf == NULL)
{
cairo_surface_t *empty = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, 0, 0);
char *uri;
/* XXX: Can we get the error somehow sent to the CssProvider?
* I don't like just dumping it to stderr or losing it completely. */
uri = g_file_get_uri (url->file);
g_warning ("Error loading image '%s': %s", uri, error->message);
g_error_free (error);
g_free (uri);
url->loaded_image = _gtk_css_image_surface_new (empty);
cairo_surface_destroy (empty);
return url->loaded_image;
}
url->loaded_image = _gtk_css_image_surface_new_for_pixbuf (pixbuf);
g_object_unref (pixbuf);
return url->loaded_image;
}
static int
gtk_css_image_url_get_width (GtkCssImage *image)
{
GtkCssImageUrl *url = GTK_CSS_IMAGE_URL (image);
return _gtk_css_image_get_width (gtk_css_image_url_load_image (url));
}
static int
gtk_css_image_url_get_height (GtkCssImage *image)
{
GtkCssImageUrl *url = GTK_CSS_IMAGE_URL (image);
return _gtk_css_image_get_height (gtk_css_image_url_load_image (url));
}
static double
gtk_css_image_url_get_aspect_ratio (GtkCssImage *image)
{
GtkCssImageUrl *url = GTK_CSS_IMAGE_URL (image);
return _gtk_css_image_get_aspect_ratio (gtk_css_image_url_load_image (url));
}
static void
gtk_css_image_url_draw (GtkCssImage *image,
cairo_t *cr,
double width,
double height)
{
GtkCssImageUrl *url = GTK_CSS_IMAGE_URL (image);
_gtk_css_image_draw (gtk_css_image_url_load_image (url), cr, width, height);
}
static GtkCssImage *
gtk_css_image_url_compute (GtkCssImage *image,
guint property_id,
GtkStyleProviderPrivate *provider,
GtkCssStyle *style,
GtkCssStyle *parent_style)
{
GtkCssImageUrl *url = GTK_CSS_IMAGE_URL (image);
return g_object_ref (gtk_css_image_url_load_image (url));
}
static gboolean
gtk_css_image_url_parse (GtkCssImage *image,
GtkCssParser *parser)
{
GtkCssImageUrl *url = GTK_CSS_IMAGE_URL (image);
url->file = _gtk_css_parser_read_url (parser);
if (url->file == NULL)
return FALSE;
return TRUE;
}
static void
gtk_css_image_url_print (GtkCssImage *image,
GString *string)
{
GtkCssImageUrl *url = GTK_CSS_IMAGE_URL (image);
_gtk_css_image_print (gtk_css_image_url_load_image (url), string);
}
static void
gtk_css_image_url_dispose (GObject *object)
{
GtkCssImageUrl *url = GTK_CSS_IMAGE_URL (object);
g_clear_object (&url->file);
g_clear_object (&url->loaded_image);
G_OBJECT_CLASS (_gtk_css_image_url_parent_class)->dispose (object);
}
static void
_gtk_css_image_url_class_init (GtkCssImageUrlClass *klass)
{
GtkCssImageClass *image_class = GTK_CSS_IMAGE_CLASS (klass);
GObjectClass *object_class = G_OBJECT_CLASS (klass);
image_class->get_width = gtk_css_image_url_get_width;
image_class->get_height = gtk_css_image_url_get_height;
image_class->get_aspect_ratio = gtk_css_image_url_get_aspect_ratio;
image_class->compute = gtk_css_image_url_compute;
image_class->draw = gtk_css_image_url_draw;
image_class->parse = gtk_css_image_url_parse;
image_class->print = gtk_css_image_url_print;
object_class->dispose = gtk_css_image_url_dispose;
}
static void
_gtk_css_image_url_init (GtkCssImageUrl *image_url)
{
}
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