forked from AuroraMiddleware/gtk
681 lines
20 KiB
C
681 lines
20 KiB
C
/* GTK - The GIMP Toolkit
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* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
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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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/*
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* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
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* file for a list of people on the GTK+ Team. See the ChangeLog
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* files for a list of changes. These files are distributed with
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* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
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*/
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#include "config.h"
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#include "gtktogglebutton.h"
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#include "gtkbuttonprivate.h"
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#include "gtklabel.h"
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#include "gtkmain.h"
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#include "gtkmarshalers.h"
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#include "deprecated/gtktoggleaction.h"
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#include "deprecated/gtkactivatable.h"
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#include "gtkprivate.h"
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#include "gtkintl.h"
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#include "a11y/gtktogglebuttonaccessible.h"
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/**
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* SECTION:gtktogglebutton
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* @Short_description: Create buttons which retain their state
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* @Title: GtkToggleButton
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* @See_also: #GtkButton, #GtkCheckButton, #GtkCheckMenuItem
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*
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* A #GtkToggleButton is a #GtkButton which will remain “pressed-in” when
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* clicked. Clicking again will cause the toggle button to return to its
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* normal state.
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*
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* A toggle button is created by calling either gtk_toggle_button_new() or
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* gtk_toggle_button_new_with_label(). If using the former, it is advisable to
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* pack a widget, (such as a #GtkLabel and/or a #GtkImage), into the toggle
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* button’s container. (See #GtkButton for more information).
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*
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* The state of a #GtkToggleButton can be set specifically using
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* gtk_toggle_button_set_active(), and retrieved using
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* gtk_toggle_button_get_active().
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*
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* To simply switch the state of a toggle button, use gtk_toggle_button_toggled().
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*
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* ## Creating two #GtkToggleButton widgets.
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*
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* |[<!-- language="C" -->
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* void make_toggles (void) {
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* GtkWidget *dialog, *toggle1, *toggle2;
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* GtkWidget *content_area;
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* const char *text;
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*
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* dialog = gtk_dialog_new (text);
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* content_area = gtk_dialog_get_content_area ();
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*
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* text = "Hi, i’m a toggle button.";
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* toggle1 = gtk_toggle_button_new_with_label (text);
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*
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* // Makes this toggle button invisible
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* gtk_toggle_button_set_mode (GTK_TOGGLE_BUTTON (toggle1),
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* TRUE);
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*
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* g_signal_connect (toggle1, "toggled",
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* G_CALLBACK (output_state),
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* NULL);
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* gtk_box_pack_start (GTK_BOX (content_area),
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* toggle1, FALSE, FALSE, 2);
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*
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* text = "Hi, i’m a toggle button.";
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* toggle2 = gtk_toggle_button_new_with_label (text);
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* gtk_toggle_button_set_mode (GTK_TOGGLE_BUTTON (toggle2),
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* FALSE);
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* g_signal_connect (toggle2, "toggled",
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* G_CALLBACK (output_state),
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* NULL);
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* gtk_box_pack_start (GTK_BOX (content_area),
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* toggle2, FALSE, FALSE, 2);
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*
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* gtk_widget_show_all (dialog);
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* }
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* ]|
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*/
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#define DEFAULT_LEFT_POS 4
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#define DEFAULT_TOP_POS 4
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#define DEFAULT_SPACING 7
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struct _GtkToggleButtonPrivate
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{
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guint active : 1;
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guint draw_indicator : 1;
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guint inconsistent : 1;
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};
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enum {
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TOGGLED,
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LAST_SIGNAL
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};
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enum {
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PROP_0,
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PROP_ACTIVE,
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PROP_INCONSISTENT,
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PROP_DRAW_INDICATOR
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};
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static gboolean gtk_toggle_button_mnemonic_activate (GtkWidget *widget,
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gboolean group_cycling);
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static void gtk_toggle_button_pressed (GtkButton *button);
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static void gtk_toggle_button_released (GtkButton *button);
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static void gtk_toggle_button_clicked (GtkButton *button);
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static void gtk_toggle_button_set_property (GObject *object,
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guint prop_id,
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const GValue *value,
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GParamSpec *pspec);
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static void gtk_toggle_button_get_property (GObject *object,
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guint prop_id,
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GValue *value,
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GParamSpec *pspec);
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static void gtk_toggle_button_update_state (GtkButton *button);
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static void gtk_toggle_button_enter_leave (GtkButton *button);
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static void gtk_toggle_button_activatable_interface_init (GtkActivatableIface *iface);
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static void gtk_toggle_button_update (GtkActivatable *activatable,
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GtkAction *action,
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const gchar *property_name);
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static void gtk_toggle_button_sync_action_properties (GtkActivatable *activatable,
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GtkAction *action);
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static GtkActivatableIface *parent_activatable_iface;
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static guint toggle_button_signals[LAST_SIGNAL] = { 0 };
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G_GNUC_BEGIN_IGNORE_DEPRECATIONS;
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G_DEFINE_TYPE_WITH_CODE (GtkToggleButton, gtk_toggle_button, GTK_TYPE_BUTTON,
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G_ADD_PRIVATE (GtkToggleButton)
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G_IMPLEMENT_INTERFACE (GTK_TYPE_ACTIVATABLE,
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gtk_toggle_button_activatable_interface_init))
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G_GNUC_END_IGNORE_DEPRECATIONS;
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static void
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gtk_toggle_button_class_init (GtkToggleButtonClass *class)
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{
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GObjectClass *gobject_class;
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GtkWidgetClass *widget_class;
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GtkButtonClass *button_class;
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gobject_class = G_OBJECT_CLASS (class);
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widget_class = (GtkWidgetClass*) class;
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button_class = (GtkButtonClass*) class;
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gobject_class->set_property = gtk_toggle_button_set_property;
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gobject_class->get_property = gtk_toggle_button_get_property;
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widget_class->mnemonic_activate = gtk_toggle_button_mnemonic_activate;
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button_class->pressed = gtk_toggle_button_pressed;
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button_class->released = gtk_toggle_button_released;
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button_class->clicked = gtk_toggle_button_clicked;
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button_class->enter = gtk_toggle_button_enter_leave;
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button_class->leave = gtk_toggle_button_enter_leave;
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class->toggled = NULL;
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g_object_class_install_property (gobject_class,
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PROP_ACTIVE,
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g_param_spec_boolean ("active",
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P_("Active"),
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P_("If the toggle button should be pressed in"),
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FALSE,
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GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
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g_object_class_install_property (gobject_class,
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PROP_INCONSISTENT,
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g_param_spec_boolean ("inconsistent",
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P_("Inconsistent"),
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P_("If the toggle button is in an \"in between\" state"),
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FALSE,
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GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
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g_object_class_install_property (gobject_class,
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PROP_DRAW_INDICATOR,
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g_param_spec_boolean ("draw-indicator",
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P_("Draw Indicator"),
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P_("If the toggle part of the button is displayed"),
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FALSE,
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GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
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/**
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* GtkToggleButton::toggled:
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* @togglebutton: the object which received the signal.
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*
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* Should be connected if you wish to perform an action whenever the
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* #GtkToggleButton's state is changed.
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*/
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toggle_button_signals[TOGGLED] =
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g_signal_new (I_("toggled"),
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G_OBJECT_CLASS_TYPE (gobject_class),
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G_SIGNAL_RUN_FIRST,
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G_STRUCT_OFFSET (GtkToggleButtonClass, toggled),
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NULL, NULL,
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_gtk_marshal_VOID__VOID,
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G_TYPE_NONE, 0);
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gtk_widget_class_set_accessible_type (widget_class, GTK_TYPE_TOGGLE_BUTTON_ACCESSIBLE);
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}
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static void
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gtk_toggle_button_init (GtkToggleButton *toggle_button)
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{
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toggle_button->priv = gtk_toggle_button_get_instance_private (toggle_button);
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toggle_button->priv->active = FALSE;
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toggle_button->priv->draw_indicator = FALSE;
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GTK_BUTTON (toggle_button)->priv->depress_on_activate = TRUE;
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}
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static void
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gtk_toggle_button_activatable_interface_init (GtkActivatableIface *iface)
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{
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parent_activatable_iface = g_type_interface_peek_parent (iface);
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iface->update = gtk_toggle_button_update;
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iface->sync_action_properties = gtk_toggle_button_sync_action_properties;
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}
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static void
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gtk_toggle_button_update (GtkActivatable *activatable,
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GtkAction *action,
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const gchar *property_name)
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{
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GtkToggleButton *button;
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parent_activatable_iface->update (activatable, action, property_name);
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button = GTK_TOGGLE_BUTTON (activatable);
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if (strcmp (property_name, "active") == 0)
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{
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G_GNUC_BEGIN_IGNORE_DEPRECATIONS;
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gtk_action_block_activate (action);
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gtk_toggle_button_set_active (button, gtk_toggle_action_get_active (GTK_TOGGLE_ACTION (action)));
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gtk_action_unblock_activate (action);
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G_GNUC_END_IGNORE_DEPRECATIONS;
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}
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}
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static void
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gtk_toggle_button_sync_action_properties (GtkActivatable *activatable,
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GtkAction *action)
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{
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GtkToggleButton *button;
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gboolean is_toggle_action;
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parent_activatable_iface->sync_action_properties (activatable, action);
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G_GNUC_BEGIN_IGNORE_DEPRECATIONS;
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is_toggle_action = GTK_IS_TOGGLE_ACTION (action);
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G_GNUC_END_IGNORE_DEPRECATIONS;
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if (!is_toggle_action)
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return;
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button = GTK_TOGGLE_BUTTON (activatable);
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G_GNUC_BEGIN_IGNORE_DEPRECATIONS;
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gtk_action_block_activate (action);
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gtk_toggle_button_set_active (button, gtk_toggle_action_get_active (GTK_TOGGLE_ACTION (action)));
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gtk_action_unblock_activate (action);
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G_GNUC_END_IGNORE_DEPRECATIONS;
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}
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/**
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* gtk_toggle_button_new:
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*
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* Creates a new toggle button. A widget should be packed into the button, as in gtk_button_new().
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*
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* Returns: a new toggle button.
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*/
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GtkWidget*
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gtk_toggle_button_new (void)
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{
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return g_object_new (GTK_TYPE_TOGGLE_BUTTON, NULL);
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}
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/**
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* gtk_toggle_button_new_with_label:
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* @label: a string containing the message to be placed in the toggle button.
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*
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* Creates a new toggle button with a text label.
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*
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* Returns: a new toggle button.
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*/
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GtkWidget*
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gtk_toggle_button_new_with_label (const gchar *label)
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{
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return g_object_new (GTK_TYPE_TOGGLE_BUTTON, "label", label, NULL);
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}
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/**
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* gtk_toggle_button_new_with_mnemonic:
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* @label: the text of the button, with an underscore in front of the
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* mnemonic character
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*
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* Creates a new #GtkToggleButton containing a label. The label
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* will be created using gtk_label_new_with_mnemonic(), so underscores
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* in @label indicate the mnemonic for the button.
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*
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* Returns: a new #GtkToggleButton
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*/
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GtkWidget*
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gtk_toggle_button_new_with_mnemonic (const gchar *label)
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{
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return g_object_new (GTK_TYPE_TOGGLE_BUTTON,
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"label", label,
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"use-underline", TRUE,
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NULL);
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}
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static void
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gtk_toggle_button_set_property (GObject *object,
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guint prop_id,
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const GValue *value,
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GParamSpec *pspec)
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{
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GtkToggleButton *tb;
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tb = GTK_TOGGLE_BUTTON (object);
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switch (prop_id)
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{
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case PROP_ACTIVE:
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gtk_toggle_button_set_active (tb, g_value_get_boolean (value));
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break;
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case PROP_INCONSISTENT:
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gtk_toggle_button_set_inconsistent (tb, g_value_get_boolean (value));
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break;
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case PROP_DRAW_INDICATOR:
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gtk_toggle_button_set_mode (tb, g_value_get_boolean (value));
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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gtk_toggle_button_get_property (GObject *object,
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guint prop_id,
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GValue *value,
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GParamSpec *pspec)
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{
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GtkToggleButton *tb = GTK_TOGGLE_BUTTON (object);
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GtkToggleButtonPrivate *priv = tb->priv;
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switch (prop_id)
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{
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case PROP_ACTIVE:
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g_value_set_boolean (value, priv->active);
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break;
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case PROP_INCONSISTENT:
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g_value_set_boolean (value, priv->inconsistent);
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break;
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case PROP_DRAW_INDICATOR:
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g_value_set_boolean (value, priv->draw_indicator);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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/**
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* gtk_toggle_button_set_mode:
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* @toggle_button: a #GtkToggleButton
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* @draw_indicator: if %TRUE, draw the button as a separate indicator
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* and label; if %FALSE, draw the button like a normal button
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*
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* Sets whether the button is displayed as a separate indicator and label.
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* You can call this function on a checkbutton or a radiobutton with
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* @draw_indicator = %FALSE to make the button look like a normal button
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*
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* This function only affects instances of classes like #GtkCheckButton
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* and #GtkRadioButton that derive from #GtkToggleButton,
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* not instances of #GtkToggleButton itself.
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*/
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void
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gtk_toggle_button_set_mode (GtkToggleButton *toggle_button,
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gboolean draw_indicator)
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{
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GtkToggleButtonPrivate *priv;
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g_return_if_fail (GTK_IS_TOGGLE_BUTTON (toggle_button));
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priv = toggle_button->priv;
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draw_indicator = draw_indicator ? TRUE : FALSE;
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if (priv->draw_indicator != draw_indicator)
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{
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GtkStyleContext *context;
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priv->draw_indicator = draw_indicator;
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GTK_BUTTON (toggle_button)->priv->depress_on_activate = !draw_indicator;
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if (gtk_widget_get_visible (GTK_WIDGET (toggle_button)))
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gtk_widget_queue_resize (GTK_WIDGET (toggle_button));
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g_object_notify (G_OBJECT (toggle_button), "draw-indicator");
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/* Make toggle buttons conditionally have the "button"
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* class depending on draw_indicator.
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*/
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context = gtk_widget_get_style_context (GTK_WIDGET (toggle_button));
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if (draw_indicator)
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gtk_style_context_remove_class (context, GTK_STYLE_CLASS_BUTTON);
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else
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gtk_style_context_add_class (context, GTK_STYLE_CLASS_BUTTON);
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}
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}
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/**
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* gtk_toggle_button_get_mode:
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* @toggle_button: a #GtkToggleButton
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*
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* Retrieves whether the button is displayed as a separate indicator
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* and label. See gtk_toggle_button_set_mode().
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*
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* Returns: %TRUE if the togglebutton is drawn as a separate indicator
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* and label.
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**/
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gboolean
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gtk_toggle_button_get_mode (GtkToggleButton *toggle_button)
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{
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g_return_val_if_fail (GTK_IS_TOGGLE_BUTTON (toggle_button), FALSE);
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return toggle_button->priv->draw_indicator;
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}
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/**
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* gtk_toggle_button_set_active:
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* @toggle_button: a #GtkToggleButton.
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* @is_active: %TRUE or %FALSE.
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*
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* Sets the status of the toggle button. Set to %TRUE if you want the
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* GtkToggleButton to be “pressed in”, and %FALSE to raise it.
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* This action causes the #GtkToggleButton::toggled signal and the
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* #GtkButton::clicked signal to be emitted.
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*/
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void
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gtk_toggle_button_set_active (GtkToggleButton *toggle_button,
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gboolean is_active)
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{
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GtkToggleButtonPrivate *priv;
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g_return_if_fail (GTK_IS_TOGGLE_BUTTON (toggle_button));
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priv = toggle_button->priv;
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is_active = is_active != FALSE;
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if (priv->active != is_active)
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{
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gtk_button_clicked (GTK_BUTTON (toggle_button));
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g_object_notify (G_OBJECT (toggle_button), "active");
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}
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}
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void
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_gtk_toggle_button_set_active (GtkToggleButton *toggle_button,
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gboolean is_active)
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{
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toggle_button->priv->active = is_active;
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}
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/**
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* gtk_toggle_button_get_active:
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* @toggle_button: a #GtkToggleButton.
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*
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* Queries a #GtkToggleButton and returns its current state. Returns %TRUE if
|
||
* the toggle button is pressed in and %FALSE if it is raised.
|
||
*
|
||
* Returns: a #gboolean value.
|
||
*/
|
||
gboolean
|
||
gtk_toggle_button_get_active (GtkToggleButton *toggle_button)
|
||
{
|
||
g_return_val_if_fail (GTK_IS_TOGGLE_BUTTON (toggle_button), FALSE);
|
||
|
||
return toggle_button->priv->active;
|
||
}
|
||
|
||
/**
|
||
* gtk_toggle_button_toggled:
|
||
* @toggle_button: a #GtkToggleButton.
|
||
*
|
||
* Emits the #GtkToggleButton::toggled signal on the
|
||
* #GtkToggleButton. There is no good reason for an
|
||
* application ever to call this function.
|
||
*/
|
||
void
|
||
gtk_toggle_button_toggled (GtkToggleButton *toggle_button)
|
||
{
|
||
g_return_if_fail (GTK_IS_TOGGLE_BUTTON (toggle_button));
|
||
|
||
g_signal_emit (toggle_button, toggle_button_signals[TOGGLED], 0);
|
||
}
|
||
|
||
/**
|
||
* gtk_toggle_button_set_inconsistent:
|
||
* @toggle_button: a #GtkToggleButton
|
||
* @setting: %TRUE if state is inconsistent
|
||
*
|
||
* If the user has selected a range of elements (such as some text or
|
||
* spreadsheet cells) that are affected by a toggle button, and the
|
||
* current values in that range are inconsistent, you may want to
|
||
* display the toggle in an “in between” state. This function turns on
|
||
* “in between” display. Normally you would turn off the inconsistent
|
||
* state again if the user toggles the toggle button. This has to be
|
||
* done manually, gtk_toggle_button_set_inconsistent() only affects
|
||
* visual appearance, it doesn’t affect the semantics of the button.
|
||
*
|
||
**/
|
||
void
|
||
gtk_toggle_button_set_inconsistent (GtkToggleButton *toggle_button,
|
||
gboolean setting)
|
||
{
|
||
GtkToggleButtonPrivate *priv;
|
||
|
||
g_return_if_fail (GTK_IS_TOGGLE_BUTTON (toggle_button));
|
||
|
||
priv = toggle_button->priv;
|
||
|
||
setting = setting != FALSE;
|
||
|
||
if (setting != priv->inconsistent)
|
||
{
|
||
priv->inconsistent = setting;
|
||
|
||
gtk_toggle_button_update_state (GTK_BUTTON (toggle_button));
|
||
gtk_widget_queue_draw (GTK_WIDGET (toggle_button));
|
||
|
||
g_object_notify (G_OBJECT (toggle_button), "inconsistent");
|
||
}
|
||
}
|
||
|
||
/**
|
||
* gtk_toggle_button_get_inconsistent:
|
||
* @toggle_button: a #GtkToggleButton
|
||
*
|
||
* Gets the value set by gtk_toggle_button_set_inconsistent().
|
||
*
|
||
* Returns: %TRUE if the button is displayed as inconsistent, %FALSE otherwise
|
||
**/
|
||
gboolean
|
||
gtk_toggle_button_get_inconsistent (GtkToggleButton *toggle_button)
|
||
{
|
||
g_return_val_if_fail (GTK_IS_TOGGLE_BUTTON (toggle_button), FALSE);
|
||
|
||
return toggle_button->priv->inconsistent;
|
||
}
|
||
|
||
static gboolean
|
||
gtk_toggle_button_mnemonic_activate (GtkWidget *widget,
|
||
gboolean group_cycling)
|
||
{
|
||
/*
|
||
* We override the standard implementation in
|
||
* gtk_widget_real_mnemonic_activate() in order to focus the widget even
|
||
* if there is no mnemonic conflict.
|
||
*/
|
||
if (gtk_widget_get_can_focus (widget))
|
||
gtk_widget_grab_focus (widget);
|
||
|
||
if (!group_cycling)
|
||
gtk_widget_activate (widget);
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
static void
|
||
gtk_toggle_button_pressed (GtkButton *button)
|
||
{
|
||
button->priv->button_down = TRUE;
|
||
|
||
gtk_toggle_button_update_state (button);
|
||
gtk_widget_queue_draw (GTK_WIDGET (button));
|
||
}
|
||
|
||
static void
|
||
gtk_toggle_button_released (GtkButton *button)
|
||
{
|
||
if (button->priv->button_down)
|
||
{
|
||
button->priv->button_down = FALSE;
|
||
|
||
if (button->priv->in_button)
|
||
gtk_button_clicked (button);
|
||
|
||
gtk_toggle_button_update_state (button);
|
||
gtk_widget_queue_draw (GTK_WIDGET (button));
|
||
}
|
||
}
|
||
|
||
static void
|
||
gtk_toggle_button_clicked (GtkButton *button)
|
||
{
|
||
GtkToggleButton *toggle_button = GTK_TOGGLE_BUTTON (button);
|
||
GtkToggleButtonPrivate *priv = toggle_button->priv;
|
||
|
||
priv->active = !priv->active;
|
||
|
||
gtk_toggle_button_toggled (toggle_button);
|
||
|
||
gtk_toggle_button_update_state (button);
|
||
|
||
g_object_notify (G_OBJECT (toggle_button), "active");
|
||
|
||
if (GTK_BUTTON_CLASS (gtk_toggle_button_parent_class)->clicked)
|
||
GTK_BUTTON_CLASS (gtk_toggle_button_parent_class)->clicked (button);
|
||
}
|
||
|
||
static void
|
||
gtk_toggle_button_enter_leave (GtkButton *button)
|
||
{
|
||
gtk_toggle_button_update_state (button);
|
||
gtk_widget_queue_draw (GTK_WIDGET (button));
|
||
}
|
||
|
||
static void
|
||
gtk_toggle_button_update_state (GtkButton *button)
|
||
{
|
||
GtkToggleButton *toggle_button = GTK_TOGGLE_BUTTON (button);
|
||
GtkToggleButtonPrivate *priv = toggle_button->priv;
|
||
gboolean depressed;
|
||
GtkStateFlags new_state = 0;
|
||
|
||
new_state = gtk_widget_get_state_flags (GTK_WIDGET (button)) &
|
||
~(GTK_STATE_FLAG_INCONSISTENT |
|
||
GTK_STATE_FLAG_PRELIGHT |
|
||
GTK_STATE_FLAG_ACTIVE);
|
||
|
||
if (priv->inconsistent)
|
||
new_state |= GTK_STATE_FLAG_INCONSISTENT;
|
||
|
||
if (priv->inconsistent)
|
||
depressed = FALSE;
|
||
else if (button->priv->in_button && button->priv->button_down)
|
||
depressed = TRUE;
|
||
else
|
||
depressed = priv->active;
|
||
|
||
if (button->priv->in_button)
|
||
new_state |= GTK_STATE_FLAG_PRELIGHT;
|
||
|
||
if (depressed)
|
||
new_state |= GTK_STATE_FLAG_ACTIVE;
|
||
|
||
_gtk_button_set_depressed (button, depressed);
|
||
gtk_widget_set_state_flags (GTK_WIDGET (toggle_button), new_state, TRUE);
|
||
}
|