forked from AuroraMiddleware/gtk
c1f79a935c
If none of the glyphs we want are available, fall back to using empty strings here, rather than causing critical warnings.
864 lines
26 KiB
C
864 lines
26 KiB
C
/* GTK - The GIMP Toolkit
|
||
*
|
||
* Copyright (C) 2010 Intel Corporation
|
||
* Copyright (C) 2010 RedHat, Inc.
|
||
*
|
||
* This library is free software; you can redistribute it and/or
|
||
* modify it under the terms of the GNU Lesser General Public
|
||
* License as published by the Free Software Foundation; either
|
||
* version 2 of the License, or (at your option) any later version.
|
||
*
|
||
* This library is distributed in the hope that it will be useful,
|
||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||
* Lesser General Public License for more details.
|
||
*
|
||
* You should have received a copy of the GNU Lesser General Public
|
||
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
|
||
*
|
||
* Author:
|
||
* Emmanuele Bassi <ebassi@linux.intel.com>
|
||
* Matthias Clasen <mclasen@redhat.com>
|
||
*
|
||
* Based on similar code from Mx.
|
||
*/
|
||
|
||
/**
|
||
* SECTION:gtkswitch
|
||
* @Short_Description: A “light switch” style toggle
|
||
* @Title: GtkSwitch
|
||
* @See_Also: #GtkToggleButton
|
||
*
|
||
* #GtkSwitch is a widget that has two states: on or off. The user can control
|
||
* which state should be active by clicking the empty area, or by dragging the
|
||
* handle.
|
||
*
|
||
* GtkSwitch can also handle situations where the underlying state changes with
|
||
* a delay. See #GtkSwitch::state-set for details.
|
||
*
|
||
* # CSS nodes
|
||
*
|
||
* |[<!-- language="plain" -->
|
||
* switch
|
||
* ├── label
|
||
* ├── label
|
||
* ╰── slider
|
||
* ]|
|
||
*
|
||
* GtkSwitch has four css nodes, the main node with the name switch and subnodes
|
||
* for the slider and the on and off labels. Neither of them is using any style classes.
|
||
*/
|
||
|
||
#include "config.h"
|
||
|
||
#include "gtkswitch.h"
|
||
|
||
#include "gtkactionable.h"
|
||
#include "gtkactionhelperprivate.h"
|
||
#include "gtkgesturemultipress.h"
|
||
#include "gtkgesturepan.h"
|
||
#include "gtkgesturesingle.h"
|
||
#include "gtkgizmoprivate.h"
|
||
#include "gtkintl.h"
|
||
#include "gtklabel.h"
|
||
#include "gtkmarshalers.h"
|
||
#include "gtkprivate.h"
|
||
#include "gtkprogresstrackerprivate.h"
|
||
#include "gtksettingsprivate.h"
|
||
#include "gtkstylecontextprivate.h"
|
||
#include "gtkwidgetprivate.h"
|
||
|
||
#include "a11y/gtkswitchaccessible.h"
|
||
|
||
#include "fallback-c89.c"
|
||
|
||
struct _GtkSwitchPrivate
|
||
{
|
||
GtkActionHelper *action_helper;
|
||
|
||
GtkGesture *pan_gesture;
|
||
GtkGesture *multipress_gesture;
|
||
|
||
double handle_pos;
|
||
guint tick_id;
|
||
GtkProgressTracker tracker;
|
||
|
||
guint state : 1;
|
||
guint is_active : 1;
|
||
|
||
GtkWidget *on_label;
|
||
GtkWidget *off_label;
|
||
GtkWidget *slider;
|
||
};
|
||
typedef struct _GtkSwitchPrivate GtkSwitchPrivate;
|
||
|
||
enum
|
||
{
|
||
PROP_0,
|
||
PROP_ACTIVE,
|
||
PROP_STATE,
|
||
LAST_PROP,
|
||
PROP_ACTION_NAME,
|
||
PROP_ACTION_TARGET
|
||
};
|
||
|
||
enum
|
||
{
|
||
ACTIVATE,
|
||
STATE_SET,
|
||
LAST_SIGNAL
|
||
};
|
||
|
||
static guint signals[LAST_SIGNAL] = { 0 };
|
||
|
||
static GParamSpec *switch_props[LAST_PROP] = { NULL, };
|
||
|
||
static void gtk_switch_actionable_iface_init (GtkActionableInterface *iface);
|
||
|
||
G_DEFINE_TYPE_WITH_CODE (GtkSwitch, gtk_switch, GTK_TYPE_WIDGET,
|
||
G_ADD_PRIVATE (GtkSwitch)
|
||
G_IMPLEMENT_INTERFACE (GTK_TYPE_ACTIONABLE,
|
||
gtk_switch_actionable_iface_init))
|
||
|
||
static void
|
||
gtk_switch_end_toggle_animation (GtkSwitch *sw)
|
||
{
|
||
GtkSwitchPrivate *priv = gtk_switch_get_instance_private (sw);
|
||
|
||
if (priv->tick_id != 0)
|
||
{
|
||
gtk_widget_remove_tick_callback (GTK_WIDGET (sw), priv->tick_id);
|
||
priv->tick_id = 0;
|
||
}
|
||
}
|
||
|
||
static gboolean
|
||
gtk_switch_on_frame_clock_update (GtkWidget *widget,
|
||
GdkFrameClock *clock,
|
||
gpointer user_data)
|
||
{
|
||
GtkSwitch *sw = GTK_SWITCH (widget);
|
||
GtkSwitchPrivate *priv = gtk_switch_get_instance_private (sw);
|
||
|
||
gtk_progress_tracker_advance_frame (&priv->tracker,
|
||
gdk_frame_clock_get_frame_time (clock));
|
||
|
||
if (gtk_progress_tracker_get_state (&priv->tracker) != GTK_PROGRESS_STATE_AFTER)
|
||
{
|
||
if (priv->is_active)
|
||
priv->handle_pos = 1.0 - gtk_progress_tracker_get_ease_out_cubic (&priv->tracker, FALSE);
|
||
else
|
||
priv->handle_pos = gtk_progress_tracker_get_ease_out_cubic (&priv->tracker, FALSE);
|
||
}
|
||
else
|
||
{
|
||
gtk_switch_set_active (sw, !priv->is_active);
|
||
}
|
||
|
||
gtk_widget_queue_allocate (GTK_WIDGET (sw));
|
||
|
||
return G_SOURCE_CONTINUE;
|
||
}
|
||
|
||
#define ANIMATION_DURATION 100
|
||
|
||
static void
|
||
gtk_switch_begin_toggle_animation (GtkSwitch *sw)
|
||
{
|
||
GtkSwitchPrivate *priv = gtk_switch_get_instance_private (sw);
|
||
|
||
if (gtk_settings_get_enable_animations (gtk_widget_get_settings (GTK_WIDGET (sw))))
|
||
{
|
||
gtk_progress_tracker_start (&priv->tracker, 1000 * ANIMATION_DURATION, 0, 1.0);
|
||
if (priv->tick_id == 0)
|
||
priv->tick_id = gtk_widget_add_tick_callback (GTK_WIDGET (sw),
|
||
gtk_switch_on_frame_clock_update,
|
||
NULL, NULL);
|
||
}
|
||
else
|
||
{
|
||
gtk_switch_set_active (sw, !priv->is_active);
|
||
}
|
||
}
|
||
|
||
static void
|
||
gtk_switch_multipress_gesture_pressed (GtkGestureMultiPress *gesture,
|
||
gint n_press,
|
||
gdouble x,
|
||
gdouble y,
|
||
GtkSwitch *sw)
|
||
{
|
||
GtkSwitchPrivate *priv = gtk_switch_get_instance_private (sw);
|
||
graphene_rect_t switch_bounds;
|
||
|
||
gtk_widget_compute_bounds (GTK_WIDGET (sw), GTK_WIDGET (sw), &switch_bounds);
|
||
gtk_gesture_set_state (GTK_GESTURE (gesture), GTK_EVENT_SEQUENCE_CLAIMED);
|
||
|
||
/* If the press didn't happen in the draggable handle,
|
||
* cancel the pan gesture right away
|
||
*/
|
||
if ((priv->is_active && x <= switch_bounds.size.width / 2.0) ||
|
||
(!priv->is_active && x > switch_bounds.size.width / 2.0))
|
||
gtk_gesture_set_state (priv->pan_gesture, GTK_EVENT_SEQUENCE_DENIED);
|
||
}
|
||
|
||
static void
|
||
gtk_switch_multipress_gesture_released (GtkGestureMultiPress *gesture,
|
||
gint n_press,
|
||
gdouble x,
|
||
gdouble y,
|
||
GtkSwitch *sw)
|
||
{
|
||
GdkEventSequence *sequence;
|
||
|
||
sequence = gtk_gesture_single_get_current_sequence (GTK_GESTURE_SINGLE (gesture));
|
||
|
||
if (gtk_widget_contains (GTK_WIDGET (sw), x, y) &&
|
||
gtk_gesture_handles_sequence (GTK_GESTURE (gesture), sequence))
|
||
gtk_switch_begin_toggle_animation (sw);
|
||
}
|
||
|
||
static void
|
||
gtk_switch_pan_gesture_pan (GtkGesturePan *gesture,
|
||
GtkPanDirection direction,
|
||
gdouble offset,
|
||
GtkSwitch *sw)
|
||
{
|
||
GtkWidget *widget = GTK_WIDGET (sw);
|
||
GtkSwitchPrivate *priv = gtk_switch_get_instance_private (sw);
|
||
int width;
|
||
|
||
width = gtk_widget_get_width (widget);
|
||
|
||
if (direction == GTK_PAN_DIRECTION_LEFT)
|
||
offset = -offset;
|
||
|
||
gtk_gesture_set_state (GTK_GESTURE (gesture), GTK_EVENT_SEQUENCE_CLAIMED);
|
||
|
||
if (priv->is_active)
|
||
offset += width / 2;
|
||
|
||
offset /= width / 2;
|
||
/* constrain the handle within the trough width */
|
||
priv->handle_pos = CLAMP (offset, 0, 1.0);
|
||
|
||
/* we need to redraw the handle */
|
||
gtk_widget_queue_allocate (widget);
|
||
}
|
||
|
||
static void
|
||
gtk_switch_pan_gesture_drag_end (GtkGestureDrag *gesture,
|
||
gdouble x,
|
||
gdouble y,
|
||
GtkSwitch *sw)
|
||
{
|
||
GtkSwitchPrivate *priv = gtk_switch_get_instance_private (sw);
|
||
GdkEventSequence *sequence;
|
||
gboolean active;
|
||
|
||
sequence = gtk_gesture_single_get_current_sequence (GTK_GESTURE_SINGLE (gesture));
|
||
|
||
if (gtk_gesture_get_sequence_state (GTK_GESTURE (gesture), sequence) == GTK_EVENT_SEQUENCE_CLAIMED)
|
||
{
|
||
/* if half the handle passed the middle of the switch, then we
|
||
* consider it to be on
|
||
*/
|
||
active = priv->handle_pos >= 0.5;
|
||
}
|
||
else if (!gtk_gesture_handles_sequence (priv->multipress_gesture, sequence))
|
||
active = priv->is_active;
|
||
else
|
||
return;
|
||
|
||
priv->handle_pos = active ? 1.0 : 0.0;
|
||
gtk_switch_set_active (sw, active);
|
||
gtk_widget_queue_allocate (GTK_WIDGET (sw));
|
||
}
|
||
|
||
static void
|
||
gtk_switch_activate (GtkSwitch *sw)
|
||
{
|
||
gtk_switch_begin_toggle_animation (sw);
|
||
}
|
||
|
||
static void
|
||
gtk_switch_update_state_labels (GtkSwitch *sw)
|
||
{
|
||
/* Glyphs for the ON state, in descending order of preference */
|
||
const char *on_glyphs[] = {
|
||
"⏽", /* U+23FD POWER ON SYMBOL */
|
||
"❙", /* U+2759 MEDIUM VERTICAL BAR */
|
||
""
|
||
};
|
||
|
||
/* Glyphs for the OFF state, in descending order of preference */
|
||
const char *off_glyphs[] = {
|
||
"⭘", /* U+2B58 HEAVY CIRCLE */
|
||
"○", /* U+25CB WHITE CIRCLE */
|
||
""
|
||
};
|
||
|
||
GtkSwitchPrivate *priv = gtk_switch_get_instance_private (sw);
|
||
GtkWidget *widget = GTK_WIDGET (sw);
|
||
int i;
|
||
|
||
for (i = 0; i < G_N_ELEMENTS (on_glyphs); i++)
|
||
{
|
||
PangoLayout *layout = gtk_widget_create_pango_layout (widget, on_glyphs[i]);
|
||
|
||
if (pango_layout_get_unknown_glyphs_count (layout) == 0)
|
||
{
|
||
gtk_label_set_text (GTK_LABEL (priv->on_label), on_glyphs[i]);
|
||
g_object_unref (layout);
|
||
break;
|
||
}
|
||
|
||
g_object_unref (layout);
|
||
}
|
||
|
||
for (i = 0; i < G_N_ELEMENTS (off_glyphs); i++)
|
||
{
|
||
PangoLayout *layout = gtk_widget_create_pango_layout (widget, off_glyphs[i]);
|
||
|
||
if (pango_layout_get_unknown_glyphs_count (layout) == 0)
|
||
{
|
||
gtk_label_set_text (GTK_LABEL (priv->off_label), off_glyphs[i]);
|
||
g_object_unref (layout);
|
||
break;
|
||
}
|
||
|
||
g_object_unref (layout);
|
||
}
|
||
}
|
||
|
||
static void
|
||
gtk_switch_measure (GtkWidget *widget,
|
||
GtkOrientation orientation,
|
||
int for_size,
|
||
int *minimum,
|
||
int *natural,
|
||
int *minimum_baseline,
|
||
int *natural_baseline)
|
||
{
|
||
GtkSwitch *self = GTK_SWITCH (widget);
|
||
GtkSwitchPrivate *priv = gtk_switch_get_instance_private (self);
|
||
gint slider_minimum, slider_natural;
|
||
int on_nat, off_nat;
|
||
|
||
gtk_widget_measure (priv->slider, orientation, -1,
|
||
&slider_minimum, &slider_natural,
|
||
NULL, NULL);
|
||
|
||
gtk_widget_measure (priv->on_label, orientation, for_size, NULL, &on_nat, NULL, NULL);
|
||
gtk_widget_measure (priv->off_label, orientation, for_size, NULL, &off_nat, NULL, NULL);
|
||
|
||
if (orientation == GTK_ORIENTATION_HORIZONTAL)
|
||
{
|
||
int text_width = MAX (on_nat, off_nat);
|
||
*minimum = 2 * MAX (slider_minimum, text_width);
|
||
*natural = 2 * MAX (slider_natural, text_width);
|
||
}
|
||
else
|
||
{
|
||
int text_height = MAX (on_nat, off_nat);
|
||
*minimum = MAX (slider_minimum, text_height);
|
||
*natural = MAX (slider_natural, text_height);
|
||
}
|
||
}
|
||
|
||
static void
|
||
gtk_switch_size_allocate (GtkWidget *widget,
|
||
int width,
|
||
int height,
|
||
int baseline)
|
||
{
|
||
GtkSwitch *self = GTK_SWITCH (widget);
|
||
GtkSwitchPrivate *priv = gtk_switch_get_instance_private (self);
|
||
GtkAllocation child_alloc;
|
||
int min;
|
||
|
||
gtk_widget_size_allocate (priv->slider,
|
||
&(GtkAllocation) {
|
||
round (priv->handle_pos * (width / 2)), 0,
|
||
width / 2, height
|
||
}, -1);
|
||
|
||
/* Center ON label in left half */
|
||
gtk_widget_measure (priv->on_label, GTK_ORIENTATION_HORIZONTAL, -1, &min, NULL, NULL, NULL);
|
||
child_alloc.x = ((width / 2) - min) / 2;
|
||
child_alloc.width = min;
|
||
gtk_widget_measure (priv->on_label, GTK_ORIENTATION_VERTICAL, min, &min, NULL, NULL, NULL);
|
||
child_alloc.y = (height - min) / 2;
|
||
child_alloc.height = min;
|
||
gtk_widget_size_allocate (priv->on_label, &child_alloc, -1);
|
||
|
||
/* Center OFF label in right half */
|
||
gtk_widget_measure (priv->off_label, GTK_ORIENTATION_HORIZONTAL, -1, &min, NULL, NULL, NULL);
|
||
child_alloc.x = (width / 2) + ((width / 2) - min) / 2;
|
||
child_alloc.width = min;
|
||
gtk_widget_measure (priv->off_label, GTK_ORIENTATION_VERTICAL, min, &min, NULL, NULL, NULL);
|
||
child_alloc.y = (height - min) / 2;
|
||
child_alloc.height = min;
|
||
gtk_widget_size_allocate (priv->off_label, &child_alloc, -1);
|
||
}
|
||
|
||
static void
|
||
gtk_switch_style_updated (GtkWidget *widget)
|
||
{
|
||
GtkSwitch *self = GTK_SWITCH (widget);
|
||
GtkCssStyleChange *change;
|
||
GtkStyleContext *context;
|
||
|
||
GTK_WIDGET_CLASS (gtk_switch_parent_class)->style_updated (widget);
|
||
|
||
context = gtk_widget_get_style_context (widget);
|
||
change = gtk_style_context_get_change (context);
|
||
|
||
if (change == NULL || gtk_css_style_change_affects (change, GTK_CSS_AFFECTS_TEXT))
|
||
gtk_switch_update_state_labels (self);
|
||
}
|
||
|
||
static void
|
||
gtk_switch_display_changed (GtkWidget *widget,
|
||
GdkDisplay *previous_display)
|
||
{
|
||
GtkSwitch *self = GTK_SWITCH (widget);
|
||
|
||
gtk_switch_update_state_labels (self);
|
||
}
|
||
|
||
static void
|
||
gtk_switch_set_action_name (GtkActionable *actionable,
|
||
const gchar *action_name)
|
||
{
|
||
GtkSwitch *sw = GTK_SWITCH (actionable);
|
||
GtkSwitchPrivate *priv = gtk_switch_get_instance_private (sw);
|
||
|
||
if (!priv->action_helper)
|
||
priv->action_helper = gtk_action_helper_new (actionable);
|
||
|
||
gtk_action_helper_set_action_name (priv->action_helper, action_name);
|
||
}
|
||
|
||
static void
|
||
gtk_switch_set_action_target_value (GtkActionable *actionable,
|
||
GVariant *action_target)
|
||
{
|
||
GtkSwitch *sw = GTK_SWITCH (actionable);
|
||
GtkSwitchPrivate *priv = gtk_switch_get_instance_private (sw);
|
||
|
||
if (!priv->action_helper)
|
||
priv->action_helper = gtk_action_helper_new (actionable);
|
||
|
||
gtk_action_helper_set_action_target_value (priv->action_helper, action_target);
|
||
}
|
||
|
||
static const gchar *
|
||
gtk_switch_get_action_name (GtkActionable *actionable)
|
||
{
|
||
GtkSwitch *sw = GTK_SWITCH (actionable);
|
||
GtkSwitchPrivate *priv = gtk_switch_get_instance_private (sw);
|
||
|
||
return gtk_action_helper_get_action_name (priv->action_helper);
|
||
}
|
||
|
||
static GVariant *
|
||
gtk_switch_get_action_target_value (GtkActionable *actionable)
|
||
{
|
||
GtkSwitch *sw = GTK_SWITCH (actionable);
|
||
GtkSwitchPrivate *priv = gtk_switch_get_instance_private (sw);
|
||
|
||
return gtk_action_helper_get_action_target_value (priv->action_helper);
|
||
}
|
||
|
||
static void
|
||
gtk_switch_actionable_iface_init (GtkActionableInterface *iface)
|
||
{
|
||
iface->get_action_name = gtk_switch_get_action_name;
|
||
iface->set_action_name = gtk_switch_set_action_name;
|
||
iface->get_action_target_value = gtk_switch_get_action_target_value;
|
||
iface->set_action_target_value = gtk_switch_set_action_target_value;
|
||
}
|
||
|
||
static void
|
||
gtk_switch_set_property (GObject *gobject,
|
||
guint prop_id,
|
||
const GValue *value,
|
||
GParamSpec *pspec)
|
||
{
|
||
GtkSwitch *sw = GTK_SWITCH (gobject);
|
||
|
||
switch (prop_id)
|
||
{
|
||
case PROP_ACTIVE:
|
||
gtk_switch_set_active (sw, g_value_get_boolean (value));
|
||
break;
|
||
|
||
case PROP_STATE:
|
||
gtk_switch_set_state (sw, g_value_get_boolean (value));
|
||
break;
|
||
|
||
case PROP_ACTION_NAME:
|
||
gtk_switch_set_action_name (GTK_ACTIONABLE (sw), g_value_get_string (value));
|
||
break;
|
||
|
||
case PROP_ACTION_TARGET:
|
||
gtk_switch_set_action_target_value (GTK_ACTIONABLE (sw), g_value_get_variant (value));
|
||
break;
|
||
|
||
default:
|
||
G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec);
|
||
}
|
||
}
|
||
|
||
static void
|
||
gtk_switch_get_property (GObject *gobject,
|
||
guint prop_id,
|
||
GValue *value,
|
||
GParamSpec *pspec)
|
||
{
|
||
GtkSwitchPrivate *priv = gtk_switch_get_instance_private (GTK_SWITCH (gobject));
|
||
|
||
switch (prop_id)
|
||
{
|
||
case PROP_ACTIVE:
|
||
g_value_set_boolean (value, priv->is_active);
|
||
break;
|
||
|
||
case PROP_STATE:
|
||
g_value_set_boolean (value, priv->state);
|
||
break;
|
||
|
||
case PROP_ACTION_NAME:
|
||
g_value_set_string (value, gtk_action_helper_get_action_name (priv->action_helper));
|
||
break;
|
||
|
||
case PROP_ACTION_TARGET:
|
||
g_value_set_variant (value, gtk_action_helper_get_action_target_value (priv->action_helper));
|
||
break;
|
||
|
||
default:
|
||
G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec);
|
||
}
|
||
}
|
||
|
||
static void
|
||
gtk_switch_dispose (GObject *object)
|
||
{
|
||
GtkSwitchPrivate *priv = gtk_switch_get_instance_private (GTK_SWITCH (object));
|
||
|
||
g_clear_object (&priv->action_helper);
|
||
|
||
G_OBJECT_CLASS (gtk_switch_parent_class)->dispose (object);
|
||
}
|
||
|
||
static void
|
||
gtk_switch_finalize (GObject *object)
|
||
{
|
||
GtkSwitchPrivate *priv = gtk_switch_get_instance_private (GTK_SWITCH (object));
|
||
|
||
gtk_switch_end_toggle_animation (GTK_SWITCH (object));
|
||
|
||
gtk_widget_unparent (priv->on_label);
|
||
gtk_widget_unparent (priv->off_label);
|
||
gtk_widget_unparent (priv->slider);
|
||
|
||
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);
|
||
|
||
widget_class->measure = gtk_switch_measure;
|
||
widget_class->size_allocate = gtk_switch_size_allocate;
|
||
widget_class->style_updated = gtk_switch_style_updated;
|
||
widget_class->display_changed = gtk_switch_display_changed;
|
||
|
||
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);
|
||
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;
|
||
|
||
|
||
priv->on_label = gtk_label_new ("");
|
||
gtk_widget_set_parent (priv->on_label, GTK_WIDGET (self));
|
||
|
||
priv->off_label = gtk_label_new ("");
|
||
gtk_widget_set_parent (priv->off_label, GTK_WIDGET (self));
|
||
|
||
priv->slider = gtk_gizmo_new ("slider", NULL, NULL, NULL);
|
||
gtk_widget_set_parent (priv->slider, GTK_WIDGET (self));
|
||
|
||
gtk_switch_update_state_labels (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 (G_OBJECT (sw), "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;
|
||
}
|