001598a821
When creating icon info objects for unthemed files, we don't really have a nominal size, so we pass 0 to mean 'load at original size'. However, this is not what was happening. To make this possible, add variants of some pixbuf loading functions that take a scale factor instead of a desired size, and use those when we don't have a nominal size.
133 lines
3.3 KiB
C
133 lines
3.3 KiB
C
/* Copyright (C) 2016 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 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/>.
|
|
*/
|
|
|
|
#include "config.h"
|
|
|
|
#include "gdkpixbufutilsprivate.h"
|
|
|
|
static GdkPixbuf *
|
|
load_from_stream (GdkPixbufLoader *loader,
|
|
GInputStream *stream,
|
|
GCancellable *cancellable,
|
|
GError **error)
|
|
{
|
|
GdkPixbuf *pixbuf;
|
|
gssize n_read;
|
|
guchar buffer[65536];
|
|
gboolean res;
|
|
|
|
res = TRUE;
|
|
while (1)
|
|
{
|
|
n_read = g_input_stream_read (stream, buffer, sizeof (buffer), cancellable, error);
|
|
if (n_read < 0)
|
|
{
|
|
res = FALSE;
|
|
error = NULL; /* Ignore further errors */
|
|
break;
|
|
}
|
|
|
|
if (n_read == 0)
|
|
break;
|
|
|
|
if (!gdk_pixbuf_loader_write (loader, buffer, n_read, error))
|
|
{
|
|
res = FALSE;
|
|
error = NULL;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!gdk_pixbuf_loader_close (loader, error))
|
|
{
|
|
res = FALSE;
|
|
error = NULL;
|
|
}
|
|
|
|
pixbuf = NULL;
|
|
|
|
if (res)
|
|
{
|
|
pixbuf = gdk_pixbuf_loader_get_pixbuf (loader);
|
|
if (pixbuf)
|
|
g_object_ref (pixbuf);
|
|
}
|
|
|
|
return pixbuf;
|
|
}
|
|
|
|
static void
|
|
size_prepared_cb (GdkPixbufLoader *loader,
|
|
gint width,
|
|
gint height,
|
|
gpointer data)
|
|
{
|
|
gdouble *scale = data;
|
|
|
|
width = MAX (*scale * width, 1);
|
|
height = MAX (*scale * height, 1);
|
|
|
|
gdk_pixbuf_loader_set_size (loader, width, height);
|
|
}
|
|
|
|
/* Like gdk_pixbuf_new_from_stream_at_scale, but
|
|
* load the image at its original size times the
|
|
* given scale.
|
|
*/
|
|
GdkPixbuf *
|
|
_gdk_pixbuf_new_from_stream_scaled (GInputStream *stream,
|
|
gdouble scale,
|
|
GCancellable *cancellable,
|
|
GError **error)
|
|
{
|
|
GdkPixbufLoader *loader;
|
|
GdkPixbuf *pixbuf;
|
|
|
|
loader = gdk_pixbuf_loader_new ();
|
|
|
|
g_signal_connect (loader, "size-prepared",
|
|
G_CALLBACK (size_prepared_cb), &scale);
|
|
|
|
pixbuf = load_from_stream (loader, stream, cancellable, error);
|
|
|
|
g_object_unref (loader);
|
|
|
|
return pixbuf;
|
|
}
|
|
|
|
/* Like gdk_pixbuf_new_from_resource_at_scale, but
|
|
* load the image at its original size times the
|
|
* given scale.
|
|
*/
|
|
GdkPixbuf *
|
|
_gdk_pixbuf_new_from_resource_scaled (const gchar *resource_path,
|
|
gdouble scale,
|
|
GError **error)
|
|
{
|
|
GInputStream *stream;
|
|
GdkPixbuf *pixbuf;
|
|
|
|
stream = g_resources_open_stream (resource_path, 0, error);
|
|
if (stream == NULL)
|
|
return NULL;
|
|
|
|
pixbuf = _gdk_pixbuf_new_from_stream_scaled (stream, scale, NULL, error);
|
|
g_object_unref (stream);
|
|
|
|
return pixbuf;
|
|
}
|
|
|