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/* GTK - The GIMP Toolkit
* Copyright (C) 2010 Carlos Garnacho <carlosg@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, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include "gtkstyleprovider.h"
#include "gtkintl.h"
#include "gtkprivate.h"
#include "gtkwidgetpath.h"
/**
* SECTION:gtkstyleprovider
* @Short_description: Interface to provide style information to GtkStyleContext
* @Title: GtkStyleProvider
* @See_also: #GtkStyleContext, #GtkCssProvider
*
* GtkStyleProvider is an interface used to provide style information to a #GtkStyleContext.
* See gtk_style_context_add_provider() and gtk_style_context_add_provider_for_screen().
*/
static void gtk_style_provider_iface_init (gpointer g_iface);
GType
gtk_style_provider_get_type (void)
{
static GType style_provider_type = 0;
if (!style_provider_type)
style_provider_type = g_type_register_static_simple (G_TYPE_INTERFACE,
I_("GtkStyleProvider"),
sizeof (GtkStyleProviderIface),
(GClassInitFunc) gtk_style_provider_iface_init,
0, NULL, 0);
return style_provider_type;
}
static void
gtk_style_provider_iface_init (gpointer g_iface)
{
}
/**
* gtk_style_provider_get_style:
* @provider: a #GtkStyleProvider
* @path: #GtkWidgetPath to query
*
* Returns the style settings affecting a widget defined by @path, or %NULL if
* @provider doesn’t contemplate styling @path.
*
* Returns: (nullable) (transfer full): a #GtkStyleProperties containing the
* style settings affecting @path
*
* Since: 3.0
*
* Deprecated: 3.8: Will always return %NULL for all GTK-provided style providers
* as the interface cannot correctly work the way CSS is specified.
**/
GtkStyleProperties *
gtk_style_provider_get_style (GtkStyleProvider *provider,
GtkWidgetPath *path)
{
GtkStyleProviderIface *iface;
g_return_val_if_fail (GTK_IS_STYLE_PROVIDER (provider), NULL);
iface = GTK_STYLE_PROVIDER_GET_IFACE (provider);
if (!iface->get_style)
return NULL;
return iface->get_style (provider, path);
}
/**
* gtk_style_provider_get_style_property:
* @provider: a #GtkStyleProvider
* @path: #GtkWidgetPath to query
* @state: state to query the style property for
* @pspec: The #GParamSpec to query
* @value: (out): return location for the property value
*
* Looks up a widget style property as defined by @provider for
* the widget represented by @path.
*
* Returns: %TRUE if the property was found and has a value, %FALSE otherwise
*
* Since: 3.0
**/
gboolean
gtk_style_provider_get_style_property (GtkStyleProvider *provider,
GtkWidgetPath *path,
GtkStateFlags state,
GParamSpec *pspec,
GValue *value)
{
GtkStyleProviderIface *iface;
g_return_val_if_fail (GTK_IS_STYLE_PROVIDER (provider), FALSE);
g_return_val_if_fail (G_IS_PARAM_SPEC (pspec), FALSE);
g_return_val_if_fail (path != NULL, FALSE);
g_return_val_if_fail (g_type_is_a (gtk_widget_path_get_object_type (path), pspec->owner_type), FALSE);
g_return_val_if_fail (value != NULL, FALSE);
iface = GTK_STYLE_PROVIDER_GET_IFACE (provider);
if (!iface->get_style_property)
return FALSE;
return iface->get_style_property (provider, path, state, pspec, value);
}
/**
* gtk_style_provider_get_icon_factory:
* @provider: a #GtkStyleProvider
* @path: #GtkWidgetPath to query
*
* Returns the #GtkIconFactory defined to be in use for @path, or %NULL if none
* is defined.
*
* Returns: (nullable) (transfer none): The icon factory to use for @path, or %NULL
*
* Since: 3.0
*
* Deprecated: 3.8: Will always return %NULL for all GTK-provided style providers.
**/
GtkIconFactory *
gtk_style_provider_get_icon_factory (GtkStyleProvider *provider,
GtkWidgetPath *path)
{
GtkStyleProviderIface *iface;
g_return_val_if_fail (GTK_IS_STYLE_PROVIDER (provider), NULL);
g_return_val_if_fail (path != NULL, NULL);
iface = GTK_STYLE_PROVIDER_GET_IFACE (provider);
if (!iface->get_icon_factory)
return NULL;
return iface->get_icon_factory (provider, path);
}
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