[gtk+/picture: 6/22] gdk: Add GdkPictureLoader
- From: Benjamin Otte <otte src gnome org>
- To: commits-list gnome org
- Cc:
- Subject: [gtk+/picture: 6/22] gdk: Add GdkPictureLoader
- Date: Mon, 14 Feb 2011 18:34:21 +0000 (UTC)
commit 1d927e872eb194da2a5ad9c65dfa47d0b63eb495
Author: Benjamin Otte <otte redhat com>
Date: Tue Feb 8 01:50:57 2011 +0100
gdk: Add GdkPictureLoader
It loads pictures, surprise!
gdk/Makefile.am | 2 +
gdk/gdk.h | 1 +
gdk/gdk.symbols | 10 +
gdk/gdkpictureloader.c | 677 ++++++++++++++++++++++++++++++++++++++++++++++++
gdk/gdkpictureloader.h | 96 +++++++
5 files changed, 786 insertions(+), 0 deletions(-)
---
diff --git a/gdk/Makefile.am b/gdk/Makefile.am
index 36b56c0..26e76ad 100644
--- a/gdk/Makefile.am
+++ b/gdk/Makefile.am
@@ -80,6 +80,7 @@ gdk_public_h_sources = \
gdkmain.h \
gdkpango.h \
gdkpicture.h \
+ gdkpictureloader.h \
gdkpixbuf.h \
gdkpixbufpicture.h \
gdkprivate.h \
@@ -131,6 +132,7 @@ gdk_c_sources = \
gdkoffscreenwindow.c \
gdkpango.c \
gdkpicture.c \
+ gdkpictureloader.c \
gdkpixbuf-drawable.c \
gdkpixbufpicture.c \
gdkrectangle.c \
diff --git a/gdk/gdk.h b/gdk/gdk.h
index f84b963..a22e1fe 100644
--- a/gdk/gdk.h
+++ b/gdk/gdk.h
@@ -46,6 +46,7 @@
#include <gdk/gdkmain.h>
#include <gdk/gdkpango.h>
#include <gdk/gdkpicture.h>
+#include <gdk/gdkpictureloader.h>
#include <gdk/gdkpixbuf.h>
#include <gdk/gdkpixbufpicture.h>
#include <gdk/gdkproperty.h>
diff --git a/gdk/gdk.symbols b/gdk/gdk.symbols
index 6019436..90c16c1 100644
--- a/gdk/gdk.symbols
+++ b/gdk/gdk.symbols
@@ -238,6 +238,16 @@ gdk_picture_draw
gdk_picture_get_height
gdk_picture_get_type
gdk_picture_get_width
+gdk_picture_loader_get_error
+gdk_picture_loader_get_picture
+gdk_picture_loader_get_type G_GNUC_CONST
+gdk_picture_loader_load_from_stream
+gdk_picture_loader_load_from_stream_async
+gdk_picture_loader_load_from_file
+gdk_picture_loader_load_from_file_async
+gdk_picture_loader_load_from_filename
+gdk_picture_loader_load_from_filename_async
+gdk_picture_loader_new
gdk_picture_ref_surface
gdk_picture_resized
gdk_pixbuf_get_from_surface
diff --git a/gdk/gdkpictureloader.c b/gdk/gdkpictureloader.c
new file mode 100644
index 0000000..100f56a
--- /dev/null
+++ b/gdk/gdkpictureloader.c
@@ -0,0 +1,677 @@
+/* GDK - The GIMP Drawing Kit
+ * Copyright (C) 2010 Benjamin Otte <otte gnome org>
+ *
+ * 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, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#include "config.h"
+
+#include "gdkpictureloader.h"
+
+#include "gdkintl.h"
+#include "gdkinternals.h"
+#include "gdkpixbuf.h"
+
+typedef struct _GdkPictureAsyncLoad GdkPictureAsyncLoad;
+
+struct _GdkPictureLoaderPrivate {
+ GdkPictureAsyncLoad *load;
+ GdkPicture *picture;
+ GError *error;
+};
+
+struct _GdkPictureAsyncLoad {
+ GdkPictureLoader *loader;
+ GdkPixbufLoader *pixbuf_loader;
+ guchar buffer[4096];
+
+ int io_priority;
+ GCancellable *cancellable;
+ GAsyncReadyCallback callback;
+ gpointer user_data;
+};
+
+G_DEFINE_TYPE (GdkPictureLoader, gdk_picture_loader, GDK_TYPE_PICTURE)
+
+enum {
+ PROP_0,
+ PROP_PICTURE,
+ PROP_ERROR,
+};
+
+/**
+ * SECTION:gdkpictureloader
+ * @Short_description: Loading images into Pictures
+ * @Title: GdkPictureLoader
+ * @See_also: #GdkPicture
+ *
+ * A #GdkPictureLoader is an implementation of #GdkPicture that can load
+ * images from a stream. It takes care of figuring out the format,
+ * decoding the image and error handling.
+ */
+
+static void
+gdk_picture_loader_get_property (GObject *object,
+ guint prop_id,
+ GValue *value,
+ GParamSpec *pspec)
+{
+ GdkPictureLoader *loader = GDK_PICTURE_LOADER (object);
+ GdkPictureLoaderPrivate *priv = loader->priv;
+
+ switch (prop_id)
+ {
+ case PROP_PICTURE:
+ g_value_set_object (value, priv->picture);
+ break;
+ case PROP_ERROR:
+ g_value_set_boxed (value, priv->error);
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+static void
+gdk_picture_loader_draw (GdkPicture *picture,
+ cairo_t *cr)
+{
+ GdkPictureLoader *loader = GDK_PICTURE_LOADER (picture);
+ GdkPictureLoaderPrivate *priv = loader->priv;
+
+ if (priv->error)
+ {
+ /* FIXME: Draw broken image icon */
+ cairo_set_source_rgb (cr, 1, 0, 0);
+ cairo_rectangle (cr, 0, 0,
+ gdk_picture_get_width (picture),
+ gdk_picture_get_height (picture));
+ cairo_fill (cr);
+ return;
+ }
+
+ if (priv->picture)
+ {
+ gdk_picture_draw (priv->picture, cr);
+ return;
+ }
+
+ if (priv->load)
+ {
+ /* FIXME: Draw loading icon */
+ cairo_set_source_rgb (cr, 0, 0, 1);
+ cairo_rectangle (cr, 0, 0,
+ gdk_picture_get_width (picture),
+ gdk_picture_get_height (picture));
+ cairo_fill (cr);
+ return;
+ }
+
+ /* no load happening, size should be empty */
+ g_assert (gdk_picture_get_width (picture) == 0);
+ g_assert (gdk_picture_get_height (picture) == 0);
+
+ return;
+}
+
+static void
+gdk_picture_loader_class_init (GdkPictureLoaderClass *klass)
+{
+ GObjectClass *object_class = G_OBJECT_CLASS (klass);
+ GdkPictureClass *picture_class = GDK_PICTURE_CLASS (klass);
+
+ object_class->get_property = gdk_picture_loader_get_property;
+
+ picture_class->draw = gdk_picture_loader_draw;
+
+ /**
+ * GdkPictureLoader:picture:
+ *
+ * The picture that is loading or %NULL if loading hasn't processed
+ * enough or no the loader is in an error.
+ *
+ * Since: 3.2
+ */
+ g_object_class_install_property (object_class,
+ PROP_PICTURE,
+ g_param_spec_object ("picture",
+ P_("picture"),
+ P_("the loading picture"),
+ GDK_TYPE_PICTURE,
+ G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
+
+ /**
+ * GdkPictureLoader:error:
+ *
+ * The error that happened during loading or %NULL if no error happened yet.
+ *
+ * Since: 3.2
+ */
+ g_object_class_install_property (object_class,
+ PROP_ERROR,
+ g_param_spec_boxed ("error",
+ P_("error"),
+ P_("error that happened during load"),
+ G_TYPE_ERROR,
+ G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
+
+ g_type_class_add_private (klass, sizeof (GdkPictureLoaderPrivate));
+}
+
+static void
+gdk_picture_loader_init (GdkPictureLoader *loader)
+{
+ loader->priv = G_TYPE_INSTANCE_GET_PRIVATE (loader,
+ GDK_TYPE_PICTURE_LOADER,
+ GdkPictureLoaderPrivate);
+}
+
+/**
+ * gdk_picture_loader_new:
+ *
+ * Creates a new #GdkPictureLoader for loading images.
+ *
+ * Returns: a new picture
+ **/
+GdkPicture *
+gdk_picture_loader_new (void)
+{
+ return g_object_new (GDK_TYPE_PICTURE_LOADER, NULL);
+}
+
+/**
+ * gdk_picture_loader_get_error:
+ * @loader: the loader to check
+ *
+ * If there was an error while loading the image, it can be queried
+ * with this function. Otherwise, %NULL is returned.
+ *
+ * Returns: The error that @loader is in or %NULL if none
+ **/
+const GError *
+gdk_picture_loader_get_error (GdkPictureLoader *loader)
+{
+ g_return_val_if_fail (GDK_IS_PICTURE_LOADER (loader), NULL);
+
+ return loader->priv->error;
+}
+
+/**
+ * gdk_picture_loader_get_picture:
+ * @loader: the loader to get the picture from
+ *
+ * Gets the picture that is currently loading or has been loaded. If
+ * there is an error or the load has not progressed enough
+ *
+ * Returns: (transfer none) (allow-none): a %GdkPicture or %NULL.
+ **/
+GdkPicture *
+gdk_picture_loader_get_picture (GdkPictureLoader *loader)
+{
+ g_return_val_if_fail (GDK_IS_PICTURE_LOADER (loader), NULL);
+
+ return loader->priv->picture;
+}
+
+static void
+gdk_picture_loader_reset (GdkPictureLoader *loader)
+{
+ GdkPictureLoaderPrivate *priv = loader->priv;
+
+ if (priv->load) {
+ if (priv->load->loader)
+ g_object_unref (priv->load->loader);
+ priv->load->loader = NULL;
+ priv->load = NULL;
+ }
+ if (priv->error) {
+ g_error_free (priv->error);
+ priv->error = NULL;
+ g_object_notify (G_OBJECT (loader), "error");
+ }
+ if (priv->picture) {
+ g_object_unref (priv->picture);
+ priv->picture = NULL;
+ g_object_notify (G_OBJECT (loader), "picture");
+ }
+
+ gdk_picture_resized (GDK_PICTURE (loader), 0, 0);
+}
+
+static void
+gdk_picture_loader_handle_error (GdkPictureLoader *loader,
+ GError ** error)
+{
+ GdkPictureLoaderPrivate *priv = loader->priv;
+
+ g_assert (priv->error);
+
+ if (error)
+ *error = g_error_copy (priv->error);
+
+ g_object_notify (G_OBJECT (loader), "error");
+}
+
+static void
+gdk_picture_loader_size_prepared (GdkPixbufLoader *loader,
+ int width,
+ int height,
+ GdkPictureLoader *picture)
+{
+ gdk_picture_resized (GDK_PICTURE (picture), width, height);
+}
+
+static void
+gdk_picture_loader_area_prepared (GdkPixbufLoader *loader,
+ GdkPictureLoader *picture)
+{
+ GdkPictureLoaderPrivate *priv = picture->priv;
+
+ priv->picture = gdk_pixbuf_picture_new (gdk_pixbuf_loader_get_pixbuf (loader));
+
+ g_assert (gdk_picture_get_width (priv->picture) == gdk_picture_get_width (GDK_PICTURE (picture)));
+ g_assert (gdk_picture_get_height (priv->picture) == gdk_picture_get_height (GDK_PICTURE (picture)));
+
+ g_object_notify (G_OBJECT (picture), "picture");
+}
+
+static void
+gdk_picture_loader_area_updated (GdkPixbufLoader *loader,
+ int x,
+ int y,
+ int width,
+ int height,
+ GdkPictureLoader *picture)
+{
+ cairo_rectangle_int_t rect = { x, y, width, height };
+
+ gdk_picture_changed_rect (picture->priv->picture, &rect);
+ gdk_picture_changed_rect (GDK_PICTURE (picture), &rect);
+}
+
+static GdkPixbufLoader *
+gdk_picture_loader_create_loader (GdkPictureLoader *loader)
+{
+ GdkPixbufLoader *pixbuf_loader;
+
+ pixbuf_loader = gdk_pixbuf_loader_new ();
+ g_signal_connect (pixbuf_loader,
+ "size-prepared",
+ G_CALLBACK (gdk_picture_loader_size_prepared),
+ loader);
+ g_signal_connect (pixbuf_loader,
+ "area-prepared",
+ G_CALLBACK (gdk_picture_loader_area_prepared),
+ loader);
+ g_signal_connect (pixbuf_loader,
+ "area-updated",
+ G_CALLBACK (gdk_picture_loader_area_updated),
+ loader);
+
+ return pixbuf_loader;
+}
+
+void
+gdk_picture_loader_load_from_stream (GdkPictureLoader *loader,
+ GInputStream * stream,
+ GCancellable * cancellable,
+ GError ** error)
+{
+ GdkPictureLoaderPrivate *priv;
+ GdkPixbufLoader *pixbuf_loader;
+ guchar buffer[4096];
+ gssize bytes_read;
+
+ g_return_if_fail (GDK_IS_PICTURE_LOADER (loader));
+ g_return_if_fail (G_IS_INPUT_STREAM (stream));
+ g_return_if_fail (cancellable == NULL || G_IS_CANCELLABLE (cancellable));
+
+ priv = loader->priv;
+ pixbuf_loader = gdk_picture_loader_create_loader (loader);
+
+ do
+ {
+ bytes_read = g_input_stream_read (stream,
+ buffer,
+ sizeof (buffer),
+ cancellable,
+ &priv->error);
+
+ if (bytes_read > 0)
+ {
+ if (!gdk_pixbuf_loader_write (pixbuf_loader,
+ buffer,
+ bytes_read,
+ &priv->error))
+ bytes_read = -1;
+ }
+ else if (bytes_read == 0)
+ {
+ if (!gdk_pixbuf_loader_close (pixbuf_loader,
+ &priv->error))
+ bytes_read = -1;
+ }
+
+ if (bytes_read < 0)
+ gdk_picture_loader_handle_error (loader, error);
+ }
+ while (bytes_read > 0);
+
+ g_object_unref (pixbuf_loader);
+}
+
+void
+gdk_picture_loader_load_from_file (GdkPictureLoader *loader,
+ GFile * file,
+ GCancellable * cancellable,
+ GError ** error)
+{
+ GdkPictureLoaderPrivate *priv;
+ GFileInputStream *stream;
+
+ g_return_if_fail (GDK_IS_PICTURE_LOADER (loader));
+ g_return_if_fail (G_IS_FILE (file));
+ g_return_if_fail (cancellable == NULL || G_IS_CANCELLABLE (cancellable));
+
+ priv = loader->priv;
+ gdk_picture_loader_reset (loader);
+
+ stream = g_file_read (file, cancellable, &priv->error);
+ if (stream == NULL)
+ {
+ gdk_picture_loader_handle_error (loader, error);
+ return;
+ }
+
+ gdk_picture_loader_load_from_stream (loader,
+ G_INPUT_STREAM (stream),
+ cancellable,
+ error);
+ g_object_unref (stream);
+}
+
+void
+gdk_picture_loader_load_from_filename (GdkPictureLoader *loader,
+ const char * filename,
+ GCancellable * cancellable,
+ GError ** error)
+{
+ GFile *file;
+
+ g_return_if_fail (GDK_IS_PICTURE_LOADER (loader));
+ g_return_if_fail (filename != NULL);
+ g_return_if_fail (cancellable == NULL || G_IS_CANCELLABLE (cancellable));
+
+ file = g_file_new_for_path (filename);
+ gdk_picture_loader_load_from_file (loader, file, cancellable, error);
+ g_object_unref (file);
+}
+
+static GdkPictureAsyncLoad *
+gdk_picture_async_load_new (GdkPictureLoader * loader,
+ int io_priority,
+ GCancellable * cancellable,
+ GAsyncReadyCallback callback,
+ gpointer user_data)
+{
+ GdkPictureAsyncLoad *data = g_slice_new0 (GdkPictureAsyncLoad);
+
+ data->loader = g_object_ref (loader);
+ data->io_priority = io_priority;
+ data->cancellable = cancellable ? g_object_ref (cancellable) : NULL;
+ data->callback = callback;
+ data->user_data = user_data;
+ data->pixbuf_loader = gdk_picture_loader_create_loader (loader);
+
+ loader->priv->load = data;
+
+ return data;
+}
+
+static void
+gdk_picture_async_load_destroy (GdkPictureAsyncLoad *data)
+{
+ if (data->loader && data->loader->priv->load == data)
+ data->loader->priv->load = NULL;
+
+ if (data->callback)
+ data->callback (G_OBJECT (data->loader), NULL, data->user_data);
+
+ g_object_unref (data->loader);
+ if (data->cancellable)
+ g_object_unref (data->cancellable);
+ g_object_unref (data->pixbuf_loader);
+
+ g_slice_free (GdkPictureAsyncLoad, data);
+}
+
+static void
+gdk_picture_async_load_handle_error (GdkPictureAsyncLoad *data)
+{
+ gdk_picture_loader_handle_error (data->loader, NULL);
+ gdk_picture_async_load_destroy (data);
+}
+
+static gboolean
+gdk_picture_load_check_active (GdkPictureAsyncLoad *data)
+{
+ return data != NULL && data->loader != NULL;
+}
+
+static void
+gdk_picture_loader_close_callback (GObject * object,
+ GAsyncResult *res,
+ gpointer user_data)
+{
+ GInputStream *stream = G_INPUT_STREAM (object);
+ GdkPictureAsyncLoad *data = user_data;
+ GdkPictureLoaderPrivate *priv;
+
+ /* Do we need to call this? */
+ if (!gdk_picture_load_check_active (data))
+ {
+ g_input_stream_close_finish (stream, res, NULL);
+ return;
+ }
+
+ priv = data->loader->priv;
+
+ if (!g_input_stream_close_finish (stream, res, &priv->error))
+ {
+ gdk_picture_async_load_handle_error (data);
+ return;
+ }
+
+ gdk_picture_async_load_destroy (data);
+}
+
+static void
+gdk_picture_loader_read_callback (GObject * object,
+ GAsyncResult *res,
+ gpointer user_data)
+{
+ GdkPictureAsyncLoad *data = user_data;
+ GInputStream *stream = G_INPUT_STREAM (object);
+
+ if (gdk_picture_load_check_active (data))
+ {
+ GdkPictureLoaderPrivate *priv = data->loader->priv;
+ gssize bytes_read;
+
+ bytes_read = g_input_stream_read_finish (stream, res, &priv->error);
+
+ if (bytes_read > 0)
+ {
+ if (gdk_pixbuf_loader_write (data->pixbuf_loader,
+ data->buffer,
+ bytes_read,
+ &priv->error))
+ {
+ g_input_stream_read_async (stream,
+ data->buffer,
+ sizeof (data->buffer),
+ data->io_priority,
+ data->cancellable,
+ gdk_picture_loader_read_callback,
+ data);
+ return;
+ }
+ bytes_read = -1;
+ }
+ else if (bytes_read == 0)
+ {
+ if (!gdk_pixbuf_loader_close (data->pixbuf_loader,
+ &priv->error))
+ bytes_read = -1;
+ }
+
+ if (bytes_read < 0)
+ {
+ g_input_stream_close_async (stream,
+ data->io_priority,
+ data->cancellable,
+ gdk_picture_loader_close_callback,
+ NULL);
+ gdk_picture_async_load_handle_error (data);
+ return;
+ }
+ }
+
+ g_input_stream_close_async (stream,
+ data->io_priority,
+ data->cancellable,
+ gdk_picture_loader_close_callback,
+ data);
+}
+
+static void
+gdk_picture_async_load_start (GdkPictureAsyncLoad *data,
+ GInputStream *stream)
+{
+ g_input_stream_read_async (stream,
+ data->buffer,
+ sizeof (data->buffer),
+ data->io_priority,
+ data->cancellable,
+ gdk_picture_loader_read_callback,
+ data);
+}
+
+void
+gdk_picture_loader_load_from_stream_async (GdkPictureLoader * loader,
+ GInputStream * stream,
+ int io_priority,
+ GCancellable * cancellable,
+ GAsyncReadyCallback callback,
+ gpointer user_data)
+{
+ GdkPictureAsyncLoad *data;
+ GdkPictureLoaderPrivate *priv;
+
+ g_return_if_fail (GDK_IS_PICTURE_LOADER (loader));
+ g_return_if_fail (G_IS_INPUT_STREAM (stream));
+ g_return_if_fail (cancellable == NULL || G_IS_CANCELLABLE (cancellable));
+
+ priv = loader->priv;
+ gdk_picture_loader_reset (loader);
+
+ data = gdk_picture_async_load_new (loader,
+ io_priority,
+ cancellable,
+ callback,
+ user_data);
+
+ gdk_picture_async_load_start (data, stream);
+}
+
+static void
+gdk_picture_loader_file_read_callback (GObject * object,
+ GAsyncResult *res,
+ gpointer user_data)
+{
+ GdkPictureAsyncLoad *data = user_data;
+ GFile *file = G_FILE (object);
+ GdkPictureLoaderPrivate *priv = data->loader->priv;
+ GInputStream *stream;
+
+ stream = G_INPUT_STREAM (g_file_read_finish (file, res, &priv->error));
+ if (stream == NULL)
+ {
+ gdk_picture_async_load_handle_error (data);
+ return;
+ }
+
+ if (gdk_picture_load_check_active (data))
+ gdk_picture_async_load_start (data, stream);
+
+ g_object_unref (stream);
+}
+
+void
+gdk_picture_loader_load_from_file_async (GdkPictureLoader * loader,
+ GFile * file,
+ int io_priority,
+ GCancellable * cancellable,
+ GAsyncReadyCallback callback,
+ gpointer user_data)
+{
+ GdkPictureAsyncLoad *load;
+ GdkPictureLoaderPrivate *priv;
+
+ g_return_if_fail (GDK_IS_PICTURE_LOADER (loader));
+ g_return_if_fail (G_IS_FILE (file));
+ g_return_if_fail (cancellable == NULL || G_IS_CANCELLABLE (cancellable));
+
+ priv = loader->priv;
+ gdk_picture_loader_reset (loader);
+
+ load = gdk_picture_async_load_new (loader,
+ io_priority,
+ cancellable,
+ callback,
+ user_data);
+
+ g_file_read_async (file,
+ io_priority,
+ cancellable,
+ gdk_picture_loader_file_read_callback,
+ load);
+}
+
+void
+gdk_picture_loader_load_from_filename_async (GdkPictureLoader * loader,
+ const char * filename,
+ int io_priority,
+ GCancellable * cancellable,
+ GAsyncReadyCallback callback,
+ gpointer user_data)
+{
+ GFile *file;
+
+ g_return_if_fail (GDK_IS_PICTURE_LOADER (loader));
+ g_return_if_fail (filename != NULL);
+ g_return_if_fail (cancellable == NULL || G_IS_CANCELLABLE (cancellable));
+
+ file = g_file_new_for_path (filename);
+ gdk_picture_loader_load_from_file_async (loader,
+ file,
+ io_priority,
+ cancellable,
+ callback,
+ user_data);
+ g_object_unref (file);
+}
diff --git a/gdk/gdkpictureloader.h b/gdk/gdkpictureloader.h
new file mode 100644
index 0000000..649e490
--- /dev/null
+++ b/gdk/gdkpictureloader.h
@@ -0,0 +1,96 @@
+/* GDK - The GIMP Drawing Kit
+ * Copyright (C) 2010 Benjamin Otte <otte gnome org>
+ *
+ * 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, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#if !defined (__GDK_H_INSIDE__) && !defined (GDK_COMPILATION)
+#error "Only <gdk/gdk.h> can be included directly."
+#endif
+
+#ifndef __GDK_PICTURE_LOADER_H__
+#define __GDK_PICTURE_LOADER_H__
+
+#include <gdk/gdkpicture.h>
+
+#include <gio/gio.h>
+
+G_BEGIN_DECLS
+
+#define GDK_TYPE_PICTURE_LOADER (gdk_picture_loader_get_type ())
+#define GDK_PICTURE_LOADER(o) (G_TYPE_CHECK_INSTANCE_CAST ((o), GDK_TYPE_PICTURE_LOADER, GdkPictureLoader))
+#define GDK_PICTURE_LOADER_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GDK_TYPE_PICTURE_LOADER, GdkPictureLoaderClass))
+#define GDK_IS_PICTURE_LOADER(object) (G_TYPE_CHECK_INSTANCE_TYPE ((object), GDK_TYPE_PICTURE_LOADER))
+#define GDK_IS_PICTURE_LOADER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GDK_TYPE_PICTURE_LOADER))
+#define GDK_PICTURE_LOADER_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GDK_TYPE_PICTURE_LOADER, GdkPictureLoaderClass))
+
+typedef struct _GdkPictureLoader GdkPictureLoader;
+typedef struct _GdkPictureLoaderPrivate GdkPictureLoaderPrivate;
+typedef struct _GdkPictureLoaderClass GdkPictureLoaderClass;
+
+struct _GdkPictureLoader {
+ GdkPicture parent_picture;
+
+ GdkPictureLoaderPrivate *priv;
+};
+
+struct _GdkPictureLoaderClass {
+ GdkPictureClass parent_class;
+};
+
+GType gdk_picture_loader_get_type (void);
+
+GdkPicture * gdk_picture_loader_new (void);
+
+const GError * gdk_picture_loader_get_error (GdkPictureLoader * loader);
+GdkPicture * gdk_picture_loader_get_picture (GdkPictureLoader * loader);
+
+void gdk_picture_loader_load_from_stream (GdkPictureLoader * loader,
+ GInputStream * stream,
+ GCancellable * cancellable,
+ GError ** error);
+void gdk_picture_loader_load_from_file (GdkPictureLoader * loader,
+ GFile * file,
+ GCancellable * cancellable,
+ GError ** error);
+void gdk_picture_loader_load_from_filename (GdkPictureLoader * loader,
+ const char * filename,
+ GCancellable * cancellable,
+ GError ** error);
+
+void gdk_picture_loader_load_from_stream_async(GdkPictureLoader * loader,
+ GInputStream * stream,
+ int io_priority,
+ GCancellable * cancellable,
+ GAsyncReadyCallback callback,
+ gpointer user_data);
+void gdk_picture_loader_load_from_file_async (GdkPictureLoader * loader,
+ GFile * file,
+ int io_priority,
+ GCancellable * cancellable,
+ GAsyncReadyCallback callback,
+ gpointer user_data);
+void gdk_picture_loader_load_from_filename_async (GdkPictureLoader *loader,
+ const char * filename,
+ int io_priority,
+ GCancellable * cancellable,
+ GAsyncReadyCallback callback,
+ gpointer user_data);
+
+
+G_END_DECLS
+
+#endif /* __GDK_PICTURE_LOADER_H__ */
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