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texture: Implement GIcon and GLoadableIcon

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This is mainly for feature parity with GdkPixbuf. And it doesn't hurt
anyone (I hope).
This commit is contained in:
Benjamin Otte 2021-09-17 04:05:40 +02:00
parent fae32846c7
commit 1b85b5597b
1 changed files with 102 additions and 1 deletions
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103
gdk/gdktexture.c
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@ -114,9 +114,110 @@ gdk_texture_paintable_init (GdkPaintableInterface *iface)
iface->get_intrinsic_height = gdk_texture_paintable_get_intrinsic_height;
}
static GVariant *
gdk_texture_icon_serialize (GIcon *icon)
{
GVariant *result;
GBytes *bytes;
bytes = gdk_texture_save_to_png_bytes (GDK_TEXTURE (icon));
result = g_variant_new_from_bytes (G_VARIANT_TYPE_BYTESTRING, bytes, TRUE);
g_bytes_unref (bytes);
return g_variant_new ("(sv)", "bytes", result);
}
static void
gdk_texture_icon_init (GIconIface *iface)
{
iface->hash = (guint (*) (GIcon *)) g_direct_hash;
iface->equal = (gboolean (*) (GIcon *, GIcon *)) g_direct_equal;
iface->serialize = gdk_texture_icon_serialize;
}
static GInputStream *
gdk_texture_loadable_icon_load (GLoadableIcon *icon,
int size,
char **type,
GCancellable *cancellable,
GError **error)
{
GInputStream *stream;
GBytes *bytes;
bytes = gdk_texture_save_to_png_bytes (GDK_TEXTURE (icon));
stream = g_memory_input_stream_new_from_bytes (bytes);
g_bytes_unref (bytes);
if (type)
*type = NULL;
return stream;
}
static void
gdk_texture_loadable_icon_load_in_thread (GTask *task,
gpointer source_object,
gpointer task_data,
GCancellable *cancellable)
{
GInputStream *stream;
GBytes *bytes;
bytes = gdk_texture_save_to_png_bytes (source_object);
stream = g_memory_input_stream_new_from_bytes (bytes);
g_bytes_unref (bytes);
g_task_return_pointer (task, stream, g_object_unref);
}
static void
gdk_texture_loadable_icon_load_async (GLoadableIcon *icon,
int size,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data)
{
GTask *task;
task = g_task_new (icon, cancellable, callback, user_data);
g_task_run_in_thread (task, gdk_texture_loadable_icon_load_in_thread);
g_object_unref (task);
}
static GInputStream *
gdk_texture_loadable_icon_load_finish (GLoadableIcon *icon,
GAsyncResult *res,
char **type,
GError **error)
{
GInputStream *result;
g_return_val_if_fail (g_task_is_valid (res, icon), NULL);
result = g_task_propagate_pointer (G_TASK (res), error);
if (result == NULL)
return NULL;
if (type)
*type = NULL;
return result;
}
static void
gdk_texture_loadable_icon_init (GLoadableIconIface *iface)
{
iface->load = gdk_texture_loadable_icon_load;
iface->load_async = gdk_texture_loadable_icon_load_async;
iface->load_finish = gdk_texture_loadable_icon_load_finish;
}
G_DEFINE_ABSTRACT_TYPE_WITH_CODE (GdkTexture, gdk_texture, G_TYPE_OBJECT,
G_IMPLEMENT_INTERFACE (GDK_TYPE_PAINTABLE,
gdk_texture_paintable_init))
gdk_texture_paintable_init)
G_IMPLEMENT_INTERFACE (G_TYPE_ICON,
gdk_texture_icon_init)
G_IMPLEMENT_INTERFACE (G_TYPE_LOADABLE_ICON, gdk_texture_loadable_icon_init))
#define GDK_TEXTURE_WARN_NOT_IMPLEMENTED_METHOD(obj,method) \
g_critical ("Texture of type '%s' does not implement GdkTexture::" # method, G_OBJECT_TYPE_NAME (obj))