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gtk2/gtk/gtktogglebutton.c

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/* GTK - The GIMP Toolkit
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
*
* 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, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/*
* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
* file for a list of people on the GTK+ Team. See the ChangeLog
* files for a list of changes. These files are distributed with
* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
*/
#include "config.h"
#include "gtklabel.h"
#include "gtkmain.h"
#include "gtkmarshalers.h"
#include "gtktogglebutton.h"
#include "gtktoggleaction.h"
#include "gtkactivatable.h"
#include "gtkprivate.h"
#include "gtkintl.h"
#define DEFAULT_LEFT_POS 4
#define DEFAULT_TOP_POS 4
#define DEFAULT_SPACING 7
enum {
TOGGLED,
LAST_SIGNAL
};
enum {
PROP_0,
PROP_ACTIVE,
PROP_INCONSISTENT,
PROP_DRAW_INDICATOR
};
static gint gtk_toggle_button_expose (GtkWidget *widget,
GdkEventExpose *event);
static gboolean gtk_toggle_button_mnemonic_activate (GtkWidget *widget,
gboolean group_cycling);
static void gtk_toggle_button_pressed (GtkButton *button);
static void gtk_toggle_button_released (GtkButton *button);
static void gtk_toggle_button_clicked (GtkButton *button);
static void gtk_toggle_button_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec);
static void gtk_toggle_button_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec);
static void gtk_toggle_button_update_state (GtkButton *button);
static void gtk_toggle_button_activatable_interface_init (GtkActivatableIface *iface);
static void gtk_toggle_button_update (GtkActivatable *activatable,
GtkAction *action,
const gchar *property_name);
static void gtk_toggle_button_sync_action_properties (GtkActivatable *activatable,
GtkAction *action);
static GtkActivatableIface *parent_activatable_iface;
static guint toggle_button_signals[LAST_SIGNAL] = { 0 };
G_DEFINE_TYPE_WITH_CODE (GtkToggleButton, gtk_toggle_button, GTK_TYPE_BUTTON,
G_IMPLEMENT_INTERFACE (GTK_TYPE_ACTIVATABLE,
gtk_toggle_button_activatable_interface_init))
static void
gtk_toggle_button_class_init (GtkToggleButtonClass *class)
{
GObjectClass *gobject_class;
GtkWidgetClass *widget_class;
GtkButtonClass *button_class;
gobject_class = G_OBJECT_CLASS (class);
widget_class = (GtkWidgetClass*) class;
button_class = (GtkButtonClass*) class;
gobject_class->set_property = gtk_toggle_button_set_property;
gobject_class->get_property = gtk_toggle_button_get_property;
widget_class->expose_event = gtk_toggle_button_expose;
widget_class->mnemonic_activate = gtk_toggle_button_mnemonic_activate;
button_class->pressed = gtk_toggle_button_pressed;
button_class->released = gtk_toggle_button_released;
button_class->clicked = gtk_toggle_button_clicked;
button_class->enter = gtk_toggle_button_update_state;
button_class->leave = gtk_toggle_button_update_state;
class->toggled = NULL;
g_object_class_install_property (gobject_class,
PROP_ACTIVE,
g_param_spec_boolean ("active",
P_("Active"),
P_("If the toggle button should be pressed in or not"),
FALSE,
GTK_PARAM_READWRITE));
g_object_class_install_property (gobject_class,
PROP_INCONSISTENT,
g_param_spec_boolean ("inconsistent",
P_("Inconsistent"),
P_("If the toggle button is in an \"in between\" state"),
FALSE,
GTK_PARAM_READWRITE));
g_object_class_install_property (gobject_class,
PROP_DRAW_INDICATOR,
g_param_spec_boolean ("draw-indicator",
P_("Draw Indicator"),
P_("If the toggle part of the button is displayed"),
FALSE,
GTK_PARAM_READWRITE));
toggle_button_signals[TOGGLED] =
g_signal_new (I_("toggled"),
G_OBJECT_CLASS_TYPE (gobject_class),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GtkToggleButtonClass, toggled),
NULL, NULL,
_gtk_marshal_VOID__VOID,
G_TYPE_NONE, 0);
}
static void
gtk_toggle_button_init (GtkToggleButton *toggle_button)
{
toggle_button->active = FALSE;
toggle_button->draw_indicator = FALSE;
GTK_BUTTON (toggle_button)->depress_on_activate = TRUE;
}
static void
gtk_toggle_button_activatable_interface_init (GtkActivatableIface *iface)
{
parent_activatable_iface = g_type_interface_peek_parent (iface);
iface->update = gtk_toggle_button_update;
iface->sync_action_properties = gtk_toggle_button_sync_action_properties;
}
static void
gtk_toggle_button_update (GtkActivatable *activatable,
GtkAction *action,
const gchar *property_name)
{
GtkToggleButton *button;
parent_activatable_iface->update (activatable, action, property_name);
button = GTK_TOGGLE_BUTTON (activatable);
if (strcmp (property_name, "active") == 0)
{
gtk_action_block_activate (action);
gtk_toggle_button_set_active (button, gtk_toggle_action_get_active (GTK_TOGGLE_ACTION (action)));
gtk_action_unblock_activate (action);
}
}
static void
gtk_toggle_button_sync_action_properties (GtkActivatable *activatable,
GtkAction *action)
{
GtkToggleButton *button;
parent_activatable_iface->sync_action_properties (activatable, action);
if (!GTK_IS_TOGGLE_ACTION (action))
return;
button = GTK_TOGGLE_BUTTON (activatable);
gtk_action_block_activate (action);
gtk_toggle_button_set_active (button, gtk_toggle_action_get_active (GTK_TOGGLE_ACTION (action)));
gtk_action_unblock_activate (action);
}
GtkWidget*
gtk_toggle_button_new (void)
{
return g_object_new (GTK_TYPE_TOGGLE_BUTTON, NULL);
}
GtkWidget*
gtk_toggle_button_new_with_label (const gchar *label)
{
return g_object_new (GTK_TYPE_TOGGLE_BUTTON, "label", label, NULL);
}
/**
* gtk_toggle_button_new_with_mnemonic:
* @label: the text of the button, with an underscore in front of the
* mnemonic character
* @returns: a new #GtkToggleButton
*
* Creates a new #GtkToggleButton containing a label. The label
* will be created using gtk_label_new_with_mnemonic(), so underscores
* in @label indicate the mnemonic for the button.
**/
GtkWidget*
gtk_toggle_button_new_with_mnemonic (const gchar *label)
{
return g_object_new (GTK_TYPE_TOGGLE_BUTTON,
"label", label,
"use-underline", TRUE,
NULL);
}
static void
gtk_toggle_button_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GtkToggleButton *tb;
tb = GTK_TOGGLE_BUTTON (object);
switch (prop_id)
{
case PROP_ACTIVE:
gtk_toggle_button_set_active (tb, g_value_get_boolean (value));
break;
case PROP_INCONSISTENT:
gtk_toggle_button_set_inconsistent (tb, g_value_get_boolean (value));
break;
case PROP_DRAW_INDICATOR:
gtk_toggle_button_set_mode (tb, g_value_get_boolean (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_toggle_button_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GtkToggleButton *tb;
tb = GTK_TOGGLE_BUTTON (object);
switch (prop_id)
{
case PROP_ACTIVE:
g_value_set_boolean (value, tb->active);
break;
case PROP_INCONSISTENT:
g_value_set_boolean (value, tb->inconsistent);
break;
case PROP_DRAW_INDICATOR:
g_value_set_boolean (value, tb->draw_indicator);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
/**
* gtk_toggle_button_set_mode:
* @toggle_button: a #GtkToggleButton
* @draw_indicator: if %TRUE, draw the button as a separate indicator
* and label; if %FALSE, draw the button like a normal button
*
* Sets whether the button is displayed as a separate indicator and label.
* You can call this function on a checkbutton or a radiobutton with
* @draw_indicator = %FALSE to make the button look like a normal button
*
* This function only affects instances of classes like #GtkCheckButton
* and #GtkRadioButton that derive from #GtkToggleButton,
* not instances of #GtkToggleButton itself.
*/
void
gtk_toggle_button_set_mode (GtkToggleButton *toggle_button,
gboolean draw_indicator)
{
g_return_if_fail (GTK_IS_TOGGLE_BUTTON (toggle_button));
draw_indicator = draw_indicator ? TRUE : FALSE;
if (toggle_button->draw_indicator != draw_indicator)
{
toggle_button->draw_indicator = draw_indicator;
GTK_BUTTON (toggle_button)->depress_on_activate = !draw_indicator;
if (gtk_widget_get_visible (GTK_WIDGET (toggle_button)))
gtk_widget_queue_resize (GTK_WIDGET (toggle_button));
g_object_notify (G_OBJECT (toggle_button), "draw-indicator");
}
}
/**
* gtk_toggle_button_get_mode:
* @toggle_button: a #GtkToggleButton
*
* Retrieves whether the button is displayed as a separate indicator
* and label. See gtk_toggle_button_set_mode().
*
* Return value: %TRUE if the togglebutton is drawn as a separate indicator
* and label.
**/
gboolean
gtk_toggle_button_get_mode (GtkToggleButton *toggle_button)
{
g_return_val_if_fail (GTK_IS_TOGGLE_BUTTON (toggle_button), FALSE);
return toggle_button->draw_indicator;
}
void
gtk_toggle_button_set_active (GtkToggleButton *toggle_button,
gboolean is_active)
{
g_return_if_fail (GTK_IS_TOGGLE_BUTTON (toggle_button));
is_active = is_active != FALSE;
if (toggle_button->active != is_active)
gtk_button_clicked (GTK_BUTTON (toggle_button));
}
gboolean
gtk_toggle_button_get_active (GtkToggleButton *toggle_button)
{
g_return_val_if_fail (GTK_IS_TOGGLE_BUTTON (toggle_button), FALSE);
return (toggle_button->active) ? TRUE : FALSE;
}
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)
{
g_return_if_fail (GTK_IS_TOGGLE_BUTTON (toggle_button));
setting = setting != FALSE;
if (setting != toggle_button->inconsistent)
{
toggle_button->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().
*
* Return value: %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->inconsistent;
}
static gint
gtk_toggle_button_expose (GtkWidget *widget,
GdkEventExpose *event)
{
if (gtk_widget_is_drawable (widget))
{
GtkWidget *child = GTK_BIN (widget)->child;
GtkButton *button = GTK_BUTTON (widget);
GtkStateType state_type;
GtkShadowType shadow_type;
state_type = gtk_widget_get_state (widget);
if (GTK_TOGGLE_BUTTON (widget)->inconsistent)
{
if (state_type == GTK_STATE_ACTIVE)
state_type = GTK_STATE_NORMAL;
shadow_type = GTK_SHADOW_ETCHED_IN;
}
else
shadow_type = button->depressed ? GTK_SHADOW_IN : GTK_SHADOW_OUT;
_gtk_button_paint (button, &event->area, state_type, shadow_type,
"togglebutton", "togglebuttondefault");
if (child)
gtk_container_propagate_expose (GTK_CONTAINER (widget), child, event);
}
return FALSE;
}
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->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->button_down)
{
button->button_down = FALSE;
if (button->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);
toggle_button->active = !toggle_button->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_update_state (GtkButton *button)
{
GtkToggleButton *toggle_button = GTK_TOGGLE_BUTTON (button);
gboolean depressed, touchscreen;
GtkStateType new_state;
g_object_get (gtk_widget_get_settings (GTK_WIDGET (button)),
"gtk-touchscreen-mode", &touchscreen,
NULL);
if (toggle_button->inconsistent)
depressed = FALSE;
else if (button->in_button && button->button_down)
depressed = TRUE;
else
depressed = toggle_button->active;
if (!touchscreen && button->in_button && (!button->button_down || toggle_button->draw_indicator))
new_state = GTK_STATE_PRELIGHT;
else
new_state = depressed ? GTK_STATE_ACTIVE : GTK_STATE_NORMAL;
_gtk_button_set_depressed (button, depressed);
gtk_widget_set_state (GTK_WIDGET (toggle_button), new_state);
}
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