200 lines
6.5 KiB
C
200 lines
6.5 KiB
C
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/* gtkfontchooserutils.h - Private utility functions for implementing a
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* GtkFontChooser interface
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*
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* Copyright (C) 2006 Emmanuele Bassi
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*
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* All rights reserved
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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 Library 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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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library 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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* Based on gtkfilechooserutils.c:
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* Copyright (C) 2003 Red Hat, Inc.
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*/
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#include "config.h"
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#include "gtkfontchooserutils.h"
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G_GNUC_BEGIN_IGNORE_DEPRECATIONS
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static GtkFontChooser *
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get_delegate (GtkFontChooser *receiver)
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{
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return g_object_get_qdata (G_OBJECT (receiver),
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GTK_FONT_CHOOSER_DELEGATE_QUARK);
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}
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static PangoFontFamily *
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delegate_get_font_family (GtkFontChooser *chooser)
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{
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return gtk_font_chooser_get_font_family (get_delegate (chooser));
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}
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static PangoFontFace *
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delegate_get_font_face (GtkFontChooser *chooser)
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{
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return gtk_font_chooser_get_font_face (get_delegate (chooser));
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}
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static int
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delegate_get_font_size (GtkFontChooser *chooser)
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{
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return gtk_font_chooser_get_font_size (get_delegate (chooser));
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}
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static void
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delegate_set_filter_func (GtkFontChooser *chooser,
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GtkFontFilterFunc filter_func,
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gpointer filter_data,
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GDestroyNotify data_destroy)
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{
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gtk_font_chooser_set_filter_func (get_delegate (chooser),
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filter_func,
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filter_data,
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data_destroy);
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}
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static void
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delegate_set_font_map (GtkFontChooser *chooser,
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PangoFontMap *map)
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{
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gtk_font_chooser_set_font_map (get_delegate (chooser), map);
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}
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static PangoFontMap *
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delegate_get_font_map (GtkFontChooser *chooser)
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{
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return gtk_font_chooser_get_font_map (get_delegate (chooser));
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}
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static void
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delegate_notify (GObject *object,
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GParamSpec *pspec,
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gpointer user_data)
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{
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gpointer iface;
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iface = g_type_interface_peek (g_type_class_peek (G_OBJECT_TYPE (object)),
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GTK_TYPE_FONT_CHOOSER);
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if (g_object_interface_find_property (iface, pspec->name))
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g_object_notify_by_pspec (user_data, pspec);
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}
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static void
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delegate_font_activated (GtkFontChooser *receiver,
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const char *fontname,
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GtkFontChooser *delegate)
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{
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_gtk_font_chooser_font_activated (delegate, fontname);
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}
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GQuark
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_gtk_font_chooser_delegate_get_quark (void)
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{
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static GQuark quark = 0;
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if (G_UNLIKELY (quark == 0))
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quark = g_quark_from_static_string ("gtk-font-chooser-delegate");
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return quark;
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}
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/**
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* _gtk_font_chooser_install_properties:
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* @klass: the class structure for a type deriving from `GObject`
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*
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* Installs the necessary properties for a class implementing
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* `GtkFontChooser`.
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*
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* A `GtkParamSpecOverride` property is installed for each property,
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* using the values from the `GtkFontChooserProp` enumeration. The
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* caller must make sure itself that the enumeration values don’t
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* collide with some other property values they are using.
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*/
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void
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_gtk_font_chooser_install_properties (GObjectClass *klass)
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{
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g_object_class_override_property (klass,
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GTK_FONT_CHOOSER_PROP_FONT,
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"font");
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g_object_class_override_property (klass,
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GTK_FONT_CHOOSER_PROP_FONT_DESC,
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"font-desc");
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g_object_class_override_property (klass,
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GTK_FONT_CHOOSER_PROP_PREVIEW_TEXT,
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"preview-text");
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g_object_class_override_property (klass,
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GTK_FONT_CHOOSER_PROP_SHOW_PREVIEW_ENTRY,
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"show-preview-entry");
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g_object_class_override_property (klass,
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GTK_FONT_CHOOSER_PROP_LEVEL,
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"level");
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g_object_class_override_property (klass,
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GTK_FONT_CHOOSER_PROP_FONT_FEATURES,
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"font-features");
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g_object_class_override_property (klass,
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GTK_FONT_CHOOSER_PROP_LANGUAGE,
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"language");
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}
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/**
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* _gtk_font_chooser_delegate_iface_init:
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* @iface: a `GtkFontChooserIface`
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*
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* An interface-initialization function for use in cases where
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* an object is simply delegating the methods, signals of
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* the `GtkFontChooser` interface to another object.
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* _gtk_font_chooser_set_delegate() must be called on each
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* instance of the object so that the delegate object can
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* be found.
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*/
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void
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_gtk_font_chooser_delegate_iface_init (GtkFontChooserIface *iface)
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{
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iface->get_font_family = delegate_get_font_family;
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iface->get_font_face = delegate_get_font_face;
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iface->get_font_size = delegate_get_font_size;
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iface->set_filter_func = delegate_set_filter_func;
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iface->set_font_map = delegate_set_font_map;
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iface->get_font_map = delegate_get_font_map;
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}
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/**
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* _gtk_font_chooser_set_delegate:
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* @receiver: a `GObject` implementing `GtkFontChooser`
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* @delegate: another `GObject` implementing `GtkFontChooser`
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*
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* Establishes that calls on @receiver for `GtkFontChooser`
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* methods should be delegated to @delegate, and that
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* `GtkFontChooser` signals emitted on @delegate should be
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* forwarded to @receiver. Must be used in conjunction with
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* _gtk_font_chooser_delegate_iface_init().
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*/
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void
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_gtk_font_chooser_set_delegate (GtkFontChooser *receiver,
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GtkFontChooser *delegate)
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{
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g_return_if_fail (GTK_IS_FONT_CHOOSER (receiver));
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g_return_if_fail (GTK_IS_FONT_CHOOSER (delegate));
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g_object_set_qdata (G_OBJECT (receiver),
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GTK_FONT_CHOOSER_DELEGATE_QUARK,
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delegate);
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g_signal_connect (delegate, "notify",
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G_CALLBACK (delegate_notify), receiver);
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g_signal_connect (delegate, "font-activated",
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G_CALLBACK (delegate_font_activated), receiver);
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}
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