forked from AuroraMiddleware/gtk
126 lines
4.1 KiB
C
126 lines
4.1 KiB
C
/* GTK - The GIMP Toolkit
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* Copyright (C) 2010 Carlos Garnacho <carlosg@gnome.org>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include "gtkstyleprovider.h"
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#include "gtkintl.h"
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#include "gtkprivate.h"
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#include "gtkwidgetpath.h"
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/**
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* SECTION:gtkstyleprovider
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* @Short_description: Interface to provide style information to GtkStyleContext
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* @Title: GtkStyleProvider
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* @See_also: #GtkStyleContext, #GtkCssProvider
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*
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* GtkStyleProvider is an interface used to provide style information to a #GtkStyleContext.
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* See gtk_style_context_add_provider() and gtk_style_context_add_provider_for_screen().
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*/
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static void gtk_style_provider_iface_init (gpointer g_iface);
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GType
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gtk_style_provider_get_type (void)
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{
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static GType style_provider_type = 0;
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if (!style_provider_type)
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style_provider_type = g_type_register_static_simple (G_TYPE_INTERFACE,
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I_("GtkStyleProvider"),
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sizeof (GtkStyleProviderIface),
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(GClassInitFunc) gtk_style_provider_iface_init,
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0, NULL, 0);
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return style_provider_type;
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}
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static void
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gtk_style_provider_iface_init (gpointer g_iface)
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{
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}
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/**
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* gtk_style_provider_get_style:
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* @provider: a #GtkStyleProvider
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* @path: #GtkWidgetPath to query
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*
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* Returns the style settings affecting a widget defined by @path, or %NULL if
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* @provider doesn’t contemplate styling @path.
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*
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* Returns: (nullable) (transfer full): a #GtkStyleProperties containing the
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* style settings affecting @path
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*
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* Since: 3.0
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*
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* Deprecated: 3.8: Will always return %NULL for all GTK-provided style providers
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* as the interface cannot correctly work the way CSS is specified.
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**/
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GtkStyleProperties *
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gtk_style_provider_get_style (GtkStyleProvider *provider,
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GtkWidgetPath *path)
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{
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GtkStyleProviderIface *iface;
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g_return_val_if_fail (GTK_IS_STYLE_PROVIDER (provider), NULL);
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iface = GTK_STYLE_PROVIDER_GET_IFACE (provider);
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if (!iface->get_style)
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return NULL;
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return iface->get_style (provider, path);
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}
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/**
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* gtk_style_provider_get_style_property:
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* @provider: a #GtkStyleProvider
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* @path: #GtkWidgetPath to query
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* @state: state to query the style property for
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* @pspec: The #GParamSpec to query
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* @value: (out): return location for the property value
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*
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* Looks up a widget style property as defined by @provider for
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* the widget represented by @path.
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*
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* Returns: %TRUE if the property was found and has a value, %FALSE otherwise
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*
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* Since: 3.0
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**/
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gboolean
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gtk_style_provider_get_style_property (GtkStyleProvider *provider,
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GtkWidgetPath *path,
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GtkStateFlags state,
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GParamSpec *pspec,
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GValue *value)
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{
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GtkStyleProviderIface *iface;
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g_return_val_if_fail (GTK_IS_STYLE_PROVIDER (provider), FALSE);
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g_return_val_if_fail (G_IS_PARAM_SPEC (pspec), FALSE);
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g_return_val_if_fail (path != NULL, FALSE);
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g_return_val_if_fail (g_type_is_a (gtk_widget_path_get_object_type (path), pspec->owner_type), FALSE);
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g_return_val_if_fail (value != NULL, FALSE);
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iface = GTK_STYLE_PROVIDER_GET_IFACE (provider);
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if (!iface->get_style_property)
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return FALSE;
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return iface->get_style_property (provider, path, state, pspec, value);
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}
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