forked from AuroraMiddleware/gtk
813 lines
24 KiB
C
813 lines
24 KiB
C
/* GTK - The GIMP Toolkit
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*
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* Copyright (C) 2010 Intel Corporation
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* Copyright (C) 2010 RedHat, Inc.
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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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* Author:
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* Emmanuele Bassi <ebassi@linux.intel.com>
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* Matthias Clasen <mclasen@redhat.com>
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*
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* Based on similar code from Mx.
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*/
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/**
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* SECTION:gtkswitch
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* @Short_Description: A “light switch” style toggle
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* @Title: GtkSwitch
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* @See_Also: #GtkToggleButton
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*
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* #GtkSwitch is a widget that has two states: on or off. The user can control
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* which state should be active by clicking the empty area, or by dragging the
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* handle.
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*
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* GtkSwitch can also handle situations where the underlying state changes with
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* a delay. See #GtkSwitch::state-set for details.
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*
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* # CSS nodes
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*
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* |[<!-- language="plain" -->
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* switch
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* ├── label
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* ├── label
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* ╰── slider
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* ]|
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*
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* GtkSwitch has four css nodes, the main node with the name switch and subnodes
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* for the slider and the on and off labels. Neither of them is using any style classes.
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*/
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#include "config.h"
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#include "gtkswitch.h"
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#include "gtkactionable.h"
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#include "gtkactionhelperprivate.h"
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#include "gtkgesturemultipress.h"
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#include "gtkgesturepan.h"
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#include "gtkgesturesingle.h"
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#include "gtkgizmoprivate.h"
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#include "gtkintl.h"
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#include "gtkimage.h"
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#include "gtkcustomlayout.h"
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#include "gtkmarshalers.h"
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#include "gtkprivate.h"
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#include "gtkprogresstrackerprivate.h"
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#include "gtksettingsprivate.h"
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#include "gtkstylecontextprivate.h"
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#include "gtkwidgetprivate.h"
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#include "a11y/gtkswitchaccessible.h"
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#include "fallback-c89.c"
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typedef struct _GtkSwitchPrivate GtkSwitchPrivate;
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typedef struct _GtkSwitchClass GtkSwitchClass;
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struct _GtkSwitchPrivate
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{
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GtkActionHelper *action_helper;
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GtkGesture *pan_gesture;
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GtkGesture *multipress_gesture;
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double handle_pos;
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guint tick_id;
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GtkProgressTracker tracker;
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guint state : 1;
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guint is_active : 1;
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GtkWidget *on_image;
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GtkWidget *off_image;
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GtkWidget *slider;
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};
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/**
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* GtkSwitch:
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*
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* The #GtkSwitch-struct contains private
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* data and it should only be accessed using the provided API.
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*/
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struct _GtkSwitch
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{
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/*< private >*/
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GtkWidget parent_instance;
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};
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struct _GtkSwitchClass
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{
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GtkWidgetClass parent_class;
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void (* activate) (GtkSwitch *sw);
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gboolean (* state_set) (GtkSwitch *sw, gboolean state);
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};
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enum
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{
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PROP_0,
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PROP_ACTIVE,
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PROP_STATE,
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LAST_PROP,
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PROP_ACTION_NAME,
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PROP_ACTION_TARGET
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};
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enum
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{
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ACTIVATE,
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STATE_SET,
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LAST_SIGNAL
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};
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static guint signals[LAST_SIGNAL] = { 0 };
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static GParamSpec *switch_props[LAST_PROP] = { NULL, };
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static void gtk_switch_actionable_iface_init (GtkActionableInterface *iface);
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G_DEFINE_TYPE_WITH_CODE (GtkSwitch, gtk_switch, GTK_TYPE_WIDGET,
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G_ADD_PRIVATE (GtkSwitch)
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G_IMPLEMENT_INTERFACE (GTK_TYPE_ACTIONABLE,
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gtk_switch_actionable_iface_init))
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static void
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gtk_switch_end_toggle_animation (GtkSwitch *sw)
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{
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GtkSwitchPrivate *priv = gtk_switch_get_instance_private (sw);
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if (priv->tick_id != 0)
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{
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gtk_widget_remove_tick_callback (GTK_WIDGET (sw), priv->tick_id);
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priv->tick_id = 0;
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}
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}
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static gboolean
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gtk_switch_on_frame_clock_update (GtkWidget *widget,
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GdkFrameClock *clock,
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gpointer user_data)
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{
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GtkSwitch *sw = GTK_SWITCH (widget);
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GtkSwitchPrivate *priv = gtk_switch_get_instance_private (sw);
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gtk_progress_tracker_advance_frame (&priv->tracker,
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gdk_frame_clock_get_frame_time (clock));
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if (gtk_progress_tracker_get_state (&priv->tracker) != GTK_PROGRESS_STATE_AFTER)
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{
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if (priv->is_active)
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priv->handle_pos = 1.0 - gtk_progress_tracker_get_ease_out_cubic (&priv->tracker, FALSE);
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else
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priv->handle_pos = gtk_progress_tracker_get_ease_out_cubic (&priv->tracker, FALSE);
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}
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else
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{
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gtk_switch_set_active (sw, !priv->is_active);
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}
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gtk_widget_queue_allocate (GTK_WIDGET (sw));
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return G_SOURCE_CONTINUE;
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}
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#define ANIMATION_DURATION 100
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static void
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gtk_switch_begin_toggle_animation (GtkSwitch *sw)
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{
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GtkSwitchPrivate *priv = gtk_switch_get_instance_private (sw);
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if (gtk_settings_get_enable_animations (gtk_widget_get_settings (GTK_WIDGET (sw))))
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{
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gtk_progress_tracker_start (&priv->tracker, 1000 * ANIMATION_DURATION, 0, 1.0);
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if (priv->tick_id == 0)
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priv->tick_id = gtk_widget_add_tick_callback (GTK_WIDGET (sw),
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gtk_switch_on_frame_clock_update,
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NULL, NULL);
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}
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else
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{
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gtk_switch_set_active (sw, !priv->is_active);
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}
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}
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static void
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gtk_switch_multipress_gesture_pressed (GtkGestureMultiPress *gesture,
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gint n_press,
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gdouble x,
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gdouble y,
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GtkSwitch *sw)
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{
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GtkSwitchPrivate *priv = gtk_switch_get_instance_private (sw);
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graphene_rect_t switch_bounds;
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if (!gtk_widget_compute_bounds (GTK_WIDGET (sw), GTK_WIDGET (sw), &switch_bounds))
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return;
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gtk_gesture_set_state (GTK_GESTURE (gesture), GTK_EVENT_SEQUENCE_CLAIMED);
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/* If the press didn't happen in the draggable handle,
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* cancel the pan gesture right away
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*/
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if ((priv->is_active && x <= switch_bounds.size.width / 2.0) ||
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(!priv->is_active && x > switch_bounds.size.width / 2.0))
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gtk_gesture_set_state (priv->pan_gesture, GTK_EVENT_SEQUENCE_DENIED);
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}
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static void
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gtk_switch_multipress_gesture_released (GtkGestureMultiPress *gesture,
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gint n_press,
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gdouble x,
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gdouble y,
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GtkSwitch *sw)
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{
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GdkEventSequence *sequence;
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sequence = gtk_gesture_single_get_current_sequence (GTK_GESTURE_SINGLE (gesture));
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if (gtk_widget_contains (GTK_WIDGET (sw), x, y) &&
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gtk_gesture_handles_sequence (GTK_GESTURE (gesture), sequence))
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gtk_switch_begin_toggle_animation (sw);
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}
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static void
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gtk_switch_pan_gesture_pan (GtkGesturePan *gesture,
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GtkPanDirection direction,
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gdouble offset,
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GtkSwitch *sw)
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{
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GtkWidget *widget = GTK_WIDGET (sw);
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GtkSwitchPrivate *priv = gtk_switch_get_instance_private (sw);
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int width;
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width = gtk_widget_get_width (widget);
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if (direction == GTK_PAN_DIRECTION_LEFT)
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offset = -offset;
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gtk_gesture_set_state (GTK_GESTURE (gesture), GTK_EVENT_SEQUENCE_CLAIMED);
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if (priv->is_active)
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offset += width / 2;
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offset /= width / 2;
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/* constrain the handle within the trough width */
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priv->handle_pos = CLAMP (offset, 0, 1.0);
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/* we need to redraw the handle */
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gtk_widget_queue_allocate (widget);
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}
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static void
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gtk_switch_pan_gesture_drag_end (GtkGestureDrag *gesture,
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gdouble x,
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gdouble y,
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GtkSwitch *sw)
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{
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GtkSwitchPrivate *priv = gtk_switch_get_instance_private (sw);
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GdkEventSequence *sequence;
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gboolean active;
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sequence = gtk_gesture_single_get_current_sequence (GTK_GESTURE_SINGLE (gesture));
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if (gtk_gesture_get_sequence_state (GTK_GESTURE (gesture), sequence) == GTK_EVENT_SEQUENCE_CLAIMED)
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{
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/* if half the handle passed the middle of the switch, then we
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* consider it to be on
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*/
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active = priv->handle_pos >= 0.5;
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}
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else if (!gtk_gesture_handles_sequence (priv->multipress_gesture, sequence))
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active = priv->is_active;
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else
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return;
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priv->handle_pos = active ? 1.0 : 0.0;
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gtk_switch_set_active (sw, active);
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gtk_widget_queue_allocate (GTK_WIDGET (sw));
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}
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static void
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gtk_switch_activate (GtkSwitch *sw)
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{
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gtk_switch_begin_toggle_animation (sw);
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}
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static void
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gtk_switch_measure (GtkWidget *widget,
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GtkOrientation orientation,
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int for_size,
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int *minimum,
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int *natural,
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int *minimum_baseline,
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int *natural_baseline)
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{
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GtkSwitch *self = GTK_SWITCH (widget);
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GtkSwitchPrivate *priv = gtk_switch_get_instance_private (self);
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gint slider_minimum, slider_natural;
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int on_nat, off_nat;
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gtk_widget_measure (priv->slider, orientation, -1,
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&slider_minimum, &slider_natural,
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NULL, NULL);
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gtk_widget_measure (priv->on_image, orientation, for_size, NULL, &on_nat, NULL, NULL);
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gtk_widget_measure (priv->off_image, orientation, for_size, NULL, &off_nat, NULL, NULL);
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if (orientation == GTK_ORIENTATION_HORIZONTAL)
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{
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int text_width = MAX (on_nat, off_nat);
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*minimum = 2 * MAX (slider_minimum, text_width);
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*natural = 2 * MAX (slider_natural, text_width);
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}
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else
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{
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int text_height = MAX (on_nat, off_nat);
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*minimum = MAX (slider_minimum, text_height);
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*natural = MAX (slider_natural, text_height);
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}
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}
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static void
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gtk_switch_allocate (GtkWidget *widget,
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int width,
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int height,
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int baseline)
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{
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GtkSwitch *self = GTK_SWITCH (widget);
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GtkSwitchPrivate *priv = gtk_switch_get_instance_private (self);
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GtkAllocation child_alloc;
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int min;
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gtk_widget_size_allocate (priv->slider,
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&(GtkAllocation) {
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round (priv->handle_pos * (width / 2)), 0,
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width / 2, height
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}, -1);
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/* Center ON icon in left half */
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gtk_widget_measure (priv->on_image, GTK_ORIENTATION_HORIZONTAL, -1, &min, NULL, NULL, NULL);
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child_alloc.x = ((width / 2) - min) / 2;
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child_alloc.width = min;
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gtk_widget_measure (priv->on_image, GTK_ORIENTATION_VERTICAL, min, &min, NULL, NULL, NULL);
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child_alloc.y = (height - min) / 2;
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child_alloc.height = min;
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gtk_widget_size_allocate (priv->on_image, &child_alloc, -1);
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/* Center OFF icon in right half */
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gtk_widget_measure (priv->off_image, GTK_ORIENTATION_HORIZONTAL, -1, &min, NULL, NULL, NULL);
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child_alloc.x = (width / 2) + ((width / 2) - min) / 2;
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child_alloc.width = min;
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gtk_widget_measure (priv->off_image, GTK_ORIENTATION_VERTICAL, min, &min, NULL, NULL, NULL);
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child_alloc.y = (height - min) / 2;
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child_alloc.height = min;
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gtk_widget_size_allocate (priv->off_image, &child_alloc, -1);
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}
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static void
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gtk_switch_set_action_name (GtkActionable *actionable,
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const gchar *action_name)
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{
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GtkSwitch *sw = GTK_SWITCH (actionable);
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GtkSwitchPrivate *priv = gtk_switch_get_instance_private (sw);
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if (!priv->action_helper)
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priv->action_helper = gtk_action_helper_new (actionable);
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gtk_action_helper_set_action_name (priv->action_helper, action_name);
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}
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static void
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gtk_switch_set_action_target_value (GtkActionable *actionable,
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GVariant *action_target)
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{
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GtkSwitch *sw = GTK_SWITCH (actionable);
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GtkSwitchPrivate *priv = gtk_switch_get_instance_private (sw);
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if (!priv->action_helper)
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priv->action_helper = gtk_action_helper_new (actionable);
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gtk_action_helper_set_action_target_value (priv->action_helper, action_target);
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}
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static const gchar *
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gtk_switch_get_action_name (GtkActionable *actionable)
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{
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GtkSwitch *sw = GTK_SWITCH (actionable);
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GtkSwitchPrivate *priv = gtk_switch_get_instance_private (sw);
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return gtk_action_helper_get_action_name (priv->action_helper);
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}
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static GVariant *
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gtk_switch_get_action_target_value (GtkActionable *actionable)
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{
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GtkSwitch *sw = GTK_SWITCH (actionable);
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GtkSwitchPrivate *priv = gtk_switch_get_instance_private (sw);
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return gtk_action_helper_get_action_target_value (priv->action_helper);
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}
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static void
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gtk_switch_actionable_iface_init (GtkActionableInterface *iface)
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{
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iface->get_action_name = gtk_switch_get_action_name;
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iface->set_action_name = gtk_switch_set_action_name;
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iface->get_action_target_value = gtk_switch_get_action_target_value;
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iface->set_action_target_value = gtk_switch_set_action_target_value;
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}
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static void
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gtk_switch_set_property (GObject *gobject,
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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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GtkSwitch *sw = GTK_SWITCH (gobject);
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switch (prop_id)
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{
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case PROP_ACTIVE:
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gtk_switch_set_active (sw, g_value_get_boolean (value));
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break;
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case PROP_STATE:
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gtk_switch_set_state (sw, g_value_get_boolean (value));
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break;
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case PROP_ACTION_NAME:
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gtk_switch_set_action_name (GTK_ACTIONABLE (sw), g_value_get_string (value));
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break;
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case PROP_ACTION_TARGET:
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gtk_switch_set_action_target_value (GTK_ACTIONABLE (sw), g_value_get_variant (value));
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec);
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}
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}
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static void
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gtk_switch_get_property (GObject *gobject,
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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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GtkSwitchPrivate *priv = gtk_switch_get_instance_private (GTK_SWITCH (gobject));
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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->is_active);
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break;
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case PROP_STATE:
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g_value_set_boolean (value, priv->state);
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break;
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case PROP_ACTION_NAME:
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g_value_set_string (value, gtk_action_helper_get_action_name (priv->action_helper));
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break;
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case PROP_ACTION_TARGET:
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g_value_set_variant (value, gtk_action_helper_get_action_target_value (priv->action_helper));
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec);
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}
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}
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static void
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gtk_switch_dispose (GObject *object)
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{
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GtkSwitchPrivate *priv = gtk_switch_get_instance_private (GTK_SWITCH (object));
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g_clear_object (&priv->action_helper);
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G_OBJECT_CLASS (gtk_switch_parent_class)->dispose (object);
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}
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static void
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gtk_switch_finalize (GObject *object)
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{
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GtkSwitchPrivate *priv = gtk_switch_get_instance_private (GTK_SWITCH (object));
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gtk_switch_end_toggle_animation (GTK_SWITCH (object));
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gtk_widget_unparent (priv->on_image);
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gtk_widget_unparent (priv->off_image);
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gtk_widget_unparent (priv->slider);
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G_OBJECT_CLASS (gtk_switch_parent_class)->finalize (object);
|
|
}
|
|
|
|
static gboolean
|
|
state_set (GtkSwitch *sw, gboolean state)
|
|
{
|
|
GtkSwitchPrivate *priv = gtk_switch_get_instance_private (sw);
|
|
|
|
if (priv->action_helper)
|
|
gtk_action_helper_activate (priv->action_helper);
|
|
|
|
gtk_switch_set_state (sw, state);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static void
|
|
gtk_switch_class_init (GtkSwitchClass *klass)
|
|
{
|
|
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
|
|
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
|
|
|
|
/**
|
|
* GtkSwitch:active:
|
|
*
|
|
* Whether the #GtkSwitch widget is in its on or off state.
|
|
*/
|
|
switch_props[PROP_ACTIVE] =
|
|
g_param_spec_boolean ("active",
|
|
P_("Active"),
|
|
P_("Whether the switch is on or off"),
|
|
FALSE,
|
|
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
|
|
|
|
/**
|
|
* GtkSwitch:state:
|
|
*
|
|
* The backend state that is controlled by the switch.
|
|
* See #GtkSwitch::state-set for details.
|
|
*/
|
|
switch_props[PROP_STATE] =
|
|
g_param_spec_boolean ("state",
|
|
P_("State"),
|
|
P_("The backend state"),
|
|
FALSE,
|
|
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
|
|
|
|
gobject_class->set_property = gtk_switch_set_property;
|
|
gobject_class->get_property = gtk_switch_get_property;
|
|
gobject_class->dispose = gtk_switch_dispose;
|
|
gobject_class->finalize = gtk_switch_finalize;
|
|
|
|
g_object_class_install_properties (gobject_class, LAST_PROP, switch_props);
|
|
|
|
klass->activate = gtk_switch_activate;
|
|
klass->state_set = state_set;
|
|
|
|
/**
|
|
* GtkSwitch::activate:
|
|
* @widget: the object which received the signal.
|
|
*
|
|
* The ::activate signal on GtkSwitch is an action signal and
|
|
* emitting it causes the switch to animate.
|
|
* Applications should never connect to this signal, but use the
|
|
* notify::active signal.
|
|
*/
|
|
signals[ACTIVATE] =
|
|
g_signal_new (I_("activate"),
|
|
G_OBJECT_CLASS_TYPE (gobject_class),
|
|
G_SIGNAL_RUN_FIRST | G_SIGNAL_ACTION,
|
|
G_STRUCT_OFFSET (GtkSwitchClass, activate),
|
|
NULL, NULL,
|
|
NULL,
|
|
G_TYPE_NONE, 0);
|
|
widget_class->activate_signal = signals[ACTIVATE];
|
|
|
|
/**
|
|
* GtkSwitch::state-set:
|
|
* @widget: the object on which the signal was emitted
|
|
* @state: the new state of the switch
|
|
*
|
|
* The ::state-set signal on GtkSwitch is emitted to change the underlying
|
|
* state. It is emitted when the user changes the switch position. The
|
|
* default handler keeps the state in sync with the #GtkSwitch:active
|
|
* property.
|
|
*
|
|
* To implement delayed state change, applications can connect to this signal,
|
|
* initiate the change of the underlying state, and call gtk_switch_set_state()
|
|
* when the underlying state change is complete. The signal handler should
|
|
* return %TRUE to prevent the default handler from running.
|
|
*
|
|
* Visually, the underlying state is represented by the trough color of
|
|
* the switch, while the #GtkSwitch:active property is represented by the
|
|
* position of the switch.
|
|
*
|
|
* Returns: %TRUE to stop the signal emission
|
|
*/
|
|
signals[STATE_SET] =
|
|
g_signal_new (I_("state-set"),
|
|
G_OBJECT_CLASS_TYPE (gobject_class),
|
|
G_SIGNAL_RUN_LAST,
|
|
G_STRUCT_OFFSET (GtkSwitchClass, state_set),
|
|
_gtk_boolean_handled_accumulator, NULL,
|
|
_gtk_marshal_BOOLEAN__BOOLEAN,
|
|
G_TYPE_BOOLEAN, 1,
|
|
G_TYPE_BOOLEAN);
|
|
|
|
g_object_class_override_property (gobject_class, PROP_ACTION_NAME, "action-name");
|
|
g_object_class_override_property (gobject_class, PROP_ACTION_TARGET, "action-target");
|
|
|
|
gtk_widget_class_set_accessible_type (widget_class, GTK_TYPE_SWITCH_ACCESSIBLE);
|
|
gtk_widget_class_set_accessible_role (widget_class, ATK_ROLE_TOGGLE_BUTTON);
|
|
|
|
gtk_widget_class_set_css_name (widget_class, I_("switch"));
|
|
}
|
|
|
|
static void
|
|
gtk_switch_init (GtkSwitch *self)
|
|
{
|
|
GtkSwitchPrivate *priv = gtk_switch_get_instance_private (self);
|
|
GtkLayoutManager *layout;
|
|
GtkGesture *gesture;
|
|
|
|
gtk_widget_set_has_surface (GTK_WIDGET (self), FALSE);
|
|
gtk_widget_set_can_focus (GTK_WIDGET (self), TRUE);
|
|
|
|
gesture = gtk_gesture_multi_press_new ();
|
|
gtk_gesture_single_set_touch_only (GTK_GESTURE_SINGLE (gesture), FALSE);
|
|
gtk_gesture_single_set_exclusive (GTK_GESTURE_SINGLE (gesture), TRUE);
|
|
g_signal_connect (gesture, "pressed",
|
|
G_CALLBACK (gtk_switch_multipress_gesture_pressed), self);
|
|
g_signal_connect (gesture, "released",
|
|
G_CALLBACK (gtk_switch_multipress_gesture_released), self);
|
|
gtk_event_controller_set_propagation_phase (GTK_EVENT_CONTROLLER (gesture),
|
|
GTK_PHASE_BUBBLE);
|
|
gtk_widget_add_controller (GTK_WIDGET (self), GTK_EVENT_CONTROLLER (gesture));
|
|
priv->multipress_gesture = gesture;
|
|
|
|
gesture = gtk_gesture_pan_new (GTK_ORIENTATION_HORIZONTAL);
|
|
gtk_gesture_single_set_touch_only (GTK_GESTURE_SINGLE (gesture), FALSE);
|
|
gtk_gesture_single_set_exclusive (GTK_GESTURE_SINGLE (gesture), TRUE);
|
|
g_signal_connect (gesture, "pan",
|
|
G_CALLBACK (gtk_switch_pan_gesture_pan), self);
|
|
g_signal_connect (gesture, "drag-end",
|
|
G_CALLBACK (gtk_switch_pan_gesture_drag_end), self);
|
|
gtk_event_controller_set_propagation_phase (GTK_EVENT_CONTROLLER (gesture),
|
|
GTK_PHASE_CAPTURE);
|
|
gtk_widget_add_controller (GTK_WIDGET (self), GTK_EVENT_CONTROLLER (gesture));
|
|
priv->pan_gesture = gesture;
|
|
|
|
layout = gtk_custom_layout_new (NULL,
|
|
gtk_switch_measure,
|
|
gtk_switch_allocate);
|
|
gtk_widget_set_layout_manager (GTK_WIDGET (self), layout);
|
|
|
|
priv->on_image = gtk_image_new_from_icon_name ("switch-on-symbolic");
|
|
gtk_widget_set_parent (priv->on_image, GTK_WIDGET (self));
|
|
|
|
priv->off_image = gtk_image_new_from_icon_name ("switch-off-symbolic");
|
|
gtk_widget_set_parent (priv->off_image, GTK_WIDGET (self));
|
|
|
|
priv->slider = gtk_gizmo_new ("slider", NULL, NULL, NULL, NULL);
|
|
gtk_widget_set_parent (priv->slider, GTK_WIDGET (self));
|
|
}
|
|
|
|
/**
|
|
* gtk_switch_new:
|
|
*
|
|
* Creates a new #GtkSwitch widget.
|
|
*
|
|
* Returns: the newly created #GtkSwitch instance
|
|
*/
|
|
GtkWidget *
|
|
gtk_switch_new (void)
|
|
{
|
|
return g_object_new (GTK_TYPE_SWITCH, NULL);
|
|
}
|
|
|
|
/**
|
|
* gtk_switch_set_active:
|
|
* @sw: a #GtkSwitch
|
|
* @is_active: %TRUE if @sw should be active, and %FALSE otherwise
|
|
*
|
|
* Changes the state of @sw to the desired one.
|
|
*/
|
|
void
|
|
gtk_switch_set_active (GtkSwitch *sw,
|
|
gboolean is_active)
|
|
{
|
|
GtkSwitchPrivate *priv = gtk_switch_get_instance_private (sw);
|
|
|
|
g_return_if_fail (GTK_IS_SWITCH (sw));
|
|
|
|
gtk_switch_end_toggle_animation (sw);
|
|
|
|
is_active = !!is_active;
|
|
|
|
if (priv->is_active != is_active)
|
|
{
|
|
AtkObject *accessible;
|
|
gboolean handled;
|
|
|
|
priv->is_active = is_active;
|
|
|
|
if (priv->is_active)
|
|
priv->handle_pos = 1.0;
|
|
else
|
|
priv->handle_pos = 0.0;
|
|
|
|
g_signal_emit (sw, signals[STATE_SET], 0, is_active, &handled);
|
|
|
|
g_object_notify_by_pspec (G_OBJECT (sw), switch_props[PROP_ACTIVE]);
|
|
|
|
accessible = gtk_widget_get_accessible (GTK_WIDGET (sw));
|
|
atk_object_notify_state_change (accessible, ATK_STATE_CHECKED, priv->is_active);
|
|
|
|
gtk_widget_queue_allocate (GTK_WIDGET (sw));
|
|
}
|
|
}
|
|
|
|
/**
|
|
* gtk_switch_get_active:
|
|
* @sw: a #GtkSwitch
|
|
*
|
|
* Gets whether the #GtkSwitch is in its “on” or “off” state.
|
|
*
|
|
* Returns: %TRUE if the #GtkSwitch is active, and %FALSE otherwise
|
|
*/
|
|
gboolean
|
|
gtk_switch_get_active (GtkSwitch *sw)
|
|
{
|
|
GtkSwitchPrivate *priv = gtk_switch_get_instance_private (sw);
|
|
|
|
g_return_val_if_fail (GTK_IS_SWITCH (sw), FALSE);
|
|
|
|
return priv->is_active;
|
|
}
|
|
|
|
/**
|
|
* gtk_switch_set_state:
|
|
* @sw: a #GtkSwitch
|
|
* @state: the new state
|
|
*
|
|
* Sets the underlying state of the #GtkSwitch.
|
|
*
|
|
* Normally, this is the same as #GtkSwitch:active, unless the switch
|
|
* is set up for delayed state changes. This function is typically
|
|
* called from a #GtkSwitch::state-set signal handler.
|
|
*
|
|
* See #GtkSwitch::state-set for details.
|
|
*/
|
|
void
|
|
gtk_switch_set_state (GtkSwitch *sw,
|
|
gboolean state)
|
|
{
|
|
GtkSwitchPrivate *priv = gtk_switch_get_instance_private (sw);
|
|
g_return_if_fail (GTK_IS_SWITCH (sw));
|
|
|
|
state = state != FALSE;
|
|
|
|
if (priv->state == state)
|
|
return;
|
|
|
|
priv->state = state;
|
|
|
|
/* This will be a no-op if we're switching the state in response
|
|
* to a UI change. We're setting active anyway, to catch 'spontaneous'
|
|
* state changes.
|
|
*/
|
|
gtk_switch_set_active (sw, state);
|
|
|
|
if (state)
|
|
gtk_widget_set_state_flags (GTK_WIDGET (sw), GTK_STATE_FLAG_CHECKED, FALSE);
|
|
else
|
|
gtk_widget_unset_state_flags (GTK_WIDGET (sw), GTK_STATE_FLAG_CHECKED);
|
|
|
|
g_object_notify_by_pspec (G_OBJECT (sw), switch_props[PROP_STATE]);
|
|
}
|
|
|
|
/**
|
|
* gtk_switch_get_state:
|
|
* @sw: a #GtkSwitch
|
|
*
|
|
* Gets the underlying state of the #GtkSwitch.
|
|
*
|
|
* Returns: the underlying state
|
|
*/
|
|
gboolean
|
|
gtk_switch_get_state (GtkSwitch *sw)
|
|
{
|
|
GtkSwitchPrivate *priv = gtk_switch_get_instance_private (sw);
|
|
|
|
g_return_val_if_fail (GTK_IS_SWITCH (sw), FALSE);
|
|
|
|
return priv->state;
|
|
}
|