gtk/gtkcheckbutton.c - external/github.com/GNOME/gtk.git - Git at Google

 /* 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, see <http://www.gnu.org/licenses/>.
  */

 /*
  * 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 "gtkcheckbutton.h"

 #include "gtkbuttonprivate.h"
 #include "gtklabel.h"

 #include "gtkprivate.h"
 #include "gtkintl.h"


 /**
  * SECTION:gtkcheckbutton
  * @Short_description: Create widgets with a discrete toggle button
  * @Title: GtkCheckButton
  * @See_also: #GtkCheckMenuItem, #GtkButton, #GtkToggleButton, #GtkRadioButton
  *
  * A #GtkCheckButton places a discrete #GtkToggleButton next to a widget,
  * (usually a #GtkLabel). See the section on #GtkToggleButton widgets for
  * more information about toggle/check buttons.
  *
  * The important signal ( #GtkToggleButton::toggled ) is also inherited from
  * #GtkToggleButton.
  */


 #define INDICATOR_SIZE     16
 #define INDICATOR_SPACING  2


 static void gtk_check_button_get_preferred_width  (GtkWidget          *widget,
                                                    gint               *minimum,
                                                    gint               *natural);
 static void gtk_check_button_get_preferred_height (GtkWidget          *widget,
                                                    gint               *minimum,
                                                    gint               *natural);
 static void gtk_check_button_size_allocate       (GtkWidget           *widget,
 						  GtkAllocation       *allocation);
 static gboolean gtk_check_button_draw            (GtkWidget           *widget,
 						  cairo_t             *cr);
 static void gtk_check_button_paint               (GtkWidget           *widget,
 						  cairo_t             *cr);
 static void gtk_check_button_draw_indicator      (GtkCheckButton      *check_button,
 						  cairo_t             *cr);
 static void gtk_real_check_button_draw_indicator (GtkCheckButton      *check_button,
 						  cairo_t             *cr);

 G_DEFINE_TYPE (GtkCheckButton, gtk_check_button, GTK_TYPE_TOGGLE_BUTTON)

 static void
 gtk_check_button_class_init (GtkCheckButtonClass *class)
 {
   GtkWidgetClass *widget_class;

   widget_class = (GtkWidgetClass*) class;

   widget_class->get_preferred_width = gtk_check_button_get_preferred_width;
   widget_class->get_preferred_height = gtk_check_button_get_preferred_height;
   widget_class->size_allocate = gtk_check_button_size_allocate;
   widget_class->draw = gtk_check_button_draw;

   class->draw_indicator = gtk_real_check_button_draw_indicator;

   gtk_widget_class_set_accessible_role (widget_class, ATK_ROLE_CHECK_BOX);

   gtk_widget_class_install_style_property (widget_class,
 					   g_param_spec_int ("indicator-size",
 							     P_("Indicator Size"),
 							     P_("Size of check or radio indicator"),
 							     0,
 							     G_MAXINT,
 							     INDICATOR_SIZE,
 							     GTK_PARAM_READABLE));
   gtk_widget_class_install_style_property (widget_class,
 					   g_param_spec_int ("indicator-spacing",
 							     P_("Indicator Spacing"),
 							     P_("Spacing around check or radio indicator"),
 							     0,
 							     G_MAXINT,
 							     INDICATOR_SPACING,
 							     GTK_PARAM_READABLE));
 }

 static void
 draw_indicator_changed (GObject    *object,
                         GParamSpec *pspec,
                         gpointer    user_data)
 {
   GtkButton *button = GTK_BUTTON (object);

   if (gtk_toggle_button_get_mode (GTK_TOGGLE_BUTTON (button)))
     gtk_button_set_alignment (button, 0.0, 0.5);
   else
     gtk_button_set_alignment (button, 0.5, 0.5);
 }

 static void
 gtk_check_button_init (GtkCheckButton *check_button)
 {
   gtk_widget_set_receives_default (GTK_WIDGET (check_button), FALSE);
   g_signal_connect (check_button, "notify::draw-indicator", G_CALLBACK (draw_indicator_changed), NULL);
   gtk_toggle_button_set_mode (GTK_TOGGLE_BUTTON (check_button), TRUE);
 }

 /**
  * gtk_check_button_new:
  *
  * Creates a new #GtkCheckButton.
  *
  * Returns: a #GtkWidget.
  */
 GtkWidget*
 gtk_check_button_new (void)
 {
   return g_object_new (GTK_TYPE_CHECK_BUTTON, NULL);
 }


 /**
  * gtk_check_button_new_with_label:
  * @label: the text for the check button.
  *
  * Creates a new #GtkCheckButton with a #GtkLabel to the right of it.
  *
  * Returns: a #GtkWidget.
  */
 GtkWidget*
 gtk_check_button_new_with_label (const gchar *label)
 {
   return g_object_new (GTK_TYPE_CHECK_BUTTON, "label", label, NULL);
 }

 /**
  * gtk_check_button_new_with_mnemonic:
  * @label: The text of the button, with an underscore in front of the
  *   mnemonic character
  *
  * Creates a new #GtkCheckButton containing a label. The label
  * will be created using gtk_label_new_with_mnemonic(), so underscores
  * in @label indicate the mnemonic for the check button.
  *
  * Returns: a new #GtkCheckButton
  */
 GtkWidget*
 gtk_check_button_new_with_mnemonic (const gchar *label)
 {
   return g_object_new (GTK_TYPE_CHECK_BUTTON,
                        "label", label,
                        "use-underline", TRUE,
                        NULL);
 }


 /* This should only be called when toggle_button->draw_indicator
  * is true.
  */
 static void
 gtk_check_button_paint (GtkWidget    *widget,
 			cairo_t      *cr)
 {
   GtkCheckButton *check_button = GTK_CHECK_BUTTON (widget);

   gtk_check_button_draw_indicator (check_button, cr);

   if (gtk_widget_has_visible_focus (widget))
     {
       GtkWidget *child = gtk_bin_get_child (GTK_BIN (widget));
       GtkStyleContext *context;
       GtkAllocation allocation;
       gint border_width;
       gint interior_focus;
       gint focus_width;
       gint focus_pad;

       border_width = gtk_container_get_border_width (GTK_CONTAINER (widget));

       gtk_widget_style_get (widget,
                             "interior-focus", &interior_focus,
                             "focus-line-width", &focus_width,
                             "focus-padding", &focus_pad,
                             NULL);

       gtk_widget_get_allocation (widget, &allocation);
       context = gtk_widget_get_style_context (widget);

       if (interior_focus && child && gtk_widget_get_visible (child))
         {
           GtkAllocation child_allocation;

           gtk_widget_get_allocation (child, &child_allocation);
           gtk_render_focus (context, cr,
                             child_allocation.x - allocation.x - focus_width - focus_pad,
                             child_allocation.y - allocation.y - focus_width - focus_pad,
                             child_allocation.width + 2 * (focus_width + focus_pad),
                             child_allocation.height + 2 * (focus_width + focus_pad));
         }
       else
         gtk_render_focus (context, cr,
                           border_width, border_width,
                           allocation.width - 2 * border_width,
                           allocation.height - 2 * border_width);
     }
 }

 void
 _gtk_check_button_get_props (GtkCheckButton *check_button,
 			     gint           *indicator_size,
 			     gint           *indicator_spacing)
 {
   GtkWidget *widget =  GTK_WIDGET (check_button);

   if (indicator_size)
     gtk_widget_style_get (widget, "indicator-size", indicator_size, NULL);

   if (indicator_spacing)
     gtk_widget_style_get (widget, "indicator-spacing", indicator_spacing, NULL);
 }

 static void
 gtk_check_button_get_preferred_width (GtkWidget *widget,
                                       gint      *minimum,
                                       gint      *natural)
 {
   GtkToggleButton *toggle_button = GTK_TOGGLE_BUTTON (widget);

   if (gtk_toggle_button_get_mode (toggle_button))
     {
       GtkWidget *child;
       gint indicator_size;
       gint indicator_spacing;
       gint focus_width;
       gint focus_pad;
       guint border_width;

       border_width = gtk_container_get_border_width (GTK_CONTAINER (widget));

       gtk_widget_style_get (GTK_WIDGET (widget),
                             "focus-line-width", &focus_width,
                             "focus-padding", &focus_pad,
                             NULL);
       *minimum = 2 * border_width;
       *natural = 2 * border_width;

       _gtk_check_button_get_props (GTK_CHECK_BUTTON (widget),
                                    &indicator_size, &indicator_spacing);

       child = gtk_bin_get_child (GTK_BIN (widget));
       if (child && gtk_widget_get_visible (child))
         {
           gint child_min, child_nat;

           gtk_widget_get_preferred_width (child, &child_min, &child_nat);

           *minimum += child_min + indicator_spacing;
           *natural += child_nat + indicator_spacing;
         }

       *minimum += (indicator_size + indicator_spacing * 2 + 2 * (focus_width + focus_pad));
       *natural += (indicator_size + indicator_spacing * 2 + 2 * (focus_width + focus_pad));
     }
   else
     GTK_WIDGET_CLASS (gtk_check_button_parent_class)->get_preferred_width (widget, minimum, natural);
 }

 static void
 gtk_check_button_get_preferred_height (GtkWidget *widget,
                                        gint      *minimum,
                                        gint      *natural)
 {
   GtkToggleButton *toggle_button = GTK_TOGGLE_BUTTON (widget);

   if (gtk_toggle_button_get_mode (toggle_button))
     {
       GtkWidget *child;
       gint temp;
       gint indicator_size;
       gint indicator_spacing;
       gint focus_width;
       gint focus_pad;
       guint border_width;

       border_width = gtk_container_get_border_width (GTK_CONTAINER (widget));

       gtk_widget_style_get (GTK_WIDGET (widget),
                             "focus-line-width", &focus_width,
                             "focus-padding", &focus_pad,
                             NULL);

       *minimum = border_width * 2;
       *natural = border_width * 2;

       _gtk_check_button_get_props (GTK_CHECK_BUTTON (widget),
                                    &indicator_size, &indicator_spacing);

       child = gtk_bin_get_child (GTK_BIN (widget));
       if (child && gtk_widget_get_visible (child))
         {
           gint child_min, child_nat;

           gtk_widget_get_preferred_height (child, &child_min, &child_nat);

           *minimum += child_min;
           *natural += child_nat;
         }

       temp = indicator_size + indicator_spacing * 2;
       *minimum = MAX (*minimum, temp) + 2 * (focus_width + focus_pad);
       *natural = MAX (*natural, temp) + 2 * (focus_width + focus_pad);
     }
   else
     GTK_WIDGET_CLASS (gtk_check_button_parent_class)->get_preferred_height (widget, minimum, natural);
 }

 static void
 gtk_check_button_size_allocate (GtkWidget     *widget,
 				GtkAllocation *allocation)
 {
   GtkCheckButton *check_button;
   GtkToggleButton *toggle_button;
   GtkButton *button;
   GtkAllocation child_allocation;

   button = GTK_BUTTON (widget);
   check_button = GTK_CHECK_BUTTON (widget);
   toggle_button = GTK_TOGGLE_BUTTON (widget);

   if (gtk_toggle_button_get_mode (toggle_button))
     {
       GtkWidget *child;
       gint indicator_size;
       gint indicator_spacing;
       gint focus_width;
       gint focus_pad;

       _gtk_check_button_get_props (check_button, &indicator_size, &indicator_spacing);
       gtk_widget_style_get (widget,
 			    "focus-line-width", &focus_width,
 			    "focus-padding", &focus_pad,
 			    NULL);

       gtk_widget_set_allocation (widget, allocation);

       if (gtk_widget_get_realized (widget))
 	gdk_window_move_resize (gtk_button_get_event_window (button),
 				allocation->x, allocation->y,
 				allocation->width, allocation->height);

       child = gtk_bin_get_child (GTK_BIN (button));
       if (child && gtk_widget_get_visible (child))
 	{
           guint border_width = gtk_container_get_border_width (GTK_CONTAINER (widget));

 	  child_allocation.width = allocation->width -
 	    ((border_width + focus_width + focus_pad) * 2 + indicator_size + indicator_spacing * 3);
 	  child_allocation.width = MAX (child_allocation.width, 1);

 	  child_allocation.height = allocation->height - (border_width + focus_width + focus_pad) * 2;
 	  child_allocation.height = MAX (child_allocation.height, 1);

 	  child_allocation.x = (border_width + indicator_size + indicator_spacing * 3 +
                                 allocation->x + focus_width + focus_pad);
           child_allocation.y = allocation->y + (allocation->height - child_allocation.height) / 2;

 	  if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
 	    child_allocation.x = allocation->x + allocation->width
 	      - (child_allocation.x - allocation->x + child_allocation.width);

 	  gtk_widget_size_allocate (child, &child_allocation);
 	}
     }
   else
     GTK_WIDGET_CLASS (gtk_check_button_parent_class)->size_allocate (widget, allocation);
 }

 static gint
 gtk_check_button_draw (GtkWidget *widget,
                        cairo_t   *cr)
 {
   GtkToggleButton *toggle_button;
   GtkBin *bin;
   GtkWidget *child;

   toggle_button = GTK_TOGGLE_BUTTON (widget);
   bin = GTK_BIN (widget);

   if (gtk_toggle_button_get_mode (toggle_button))
     {
       gtk_check_button_paint (widget, cr);

       child = gtk_bin_get_child (bin);
       if (child)
         gtk_container_propagate_draw (GTK_CONTAINER (widget),
                                       child,
                                       cr);
     }
   else if (GTK_WIDGET_CLASS (gtk_check_button_parent_class)->draw)
     GTK_WIDGET_CLASS (gtk_check_button_parent_class)->draw (widget, cr);

   return FALSE;
 }


 static void
 gtk_check_button_draw_indicator (GtkCheckButton *check_button,
 				 cairo_t        *cr)
 {
   GtkCheckButtonClass *class = GTK_CHECK_BUTTON_GET_CLASS (check_button);

   if (class->draw_indicator)
     class->draw_indicator (check_button, cr);
 }

 static void
 gtk_real_check_button_draw_indicator (GtkCheckButton *check_button,
 				      cairo_t        *cr)
 {
   GtkWidget *widget;
   GtkWidget *child;
   GtkButton *button;
   GtkToggleButton *toggle_button;
   GtkStateFlags state = 0;
   gint x, y;
   gint indicator_size;
   gint indicator_spacing;
   gint focus_width;
   gint focus_pad;
   guint border_width;
   gboolean interior_focus;
   GtkAllocation allocation;
   GtkStyleContext *context;

   widget = GTK_WIDGET (check_button);
   button = GTK_BUTTON (check_button);
   toggle_button = GTK_TOGGLE_BUTTON (check_button);

   gtk_widget_get_allocation (widget, &allocation);
   context = gtk_widget_get_style_context (widget);
   state = gtk_widget_get_state_flags (widget);

   gtk_widget_style_get (widget,
                         "interior-focus", &interior_focus,
                         "focus-line-width", &focus_width,
                         "focus-padding", &focus_pad,
                         NULL);

   _gtk_check_button_get_props (check_button, &indicator_size, &indicator_spacing);

   border_width = gtk_container_get_border_width (GTK_CONTAINER (widget));

   x = indicator_spacing + border_width;
   y = (allocation.height - indicator_size) / 2;

   child = gtk_bin_get_child (GTK_BIN (check_button));
   if (!interior_focus || !(child && gtk_widget_get_visible (child)))
     x += focus_width + focus_pad;

   state &= ~(GTK_STATE_FLAG_INCONSISTENT |
              GTK_STATE_FLAG_ACTIVE |
              GTK_STATE_FLAG_SELECTED |
              GTK_STATE_FLAG_PRELIGHT);

   if (gtk_toggle_button_get_inconsistent (toggle_button))
     state |= GTK_STATE_FLAG_INCONSISTENT;
   else if (gtk_toggle_button_get_active (toggle_button) ||
            (button->priv->button_down && button->priv->in_button))
     state |= GTK_STATE_FLAG_ACTIVE;

   if (button->priv->activate_timeout || (button->priv->button_down && button->priv->in_button))
     state |= GTK_STATE_FLAG_SELECTED;

   if (button->priv->in_button)
     state |= GTK_STATE_FLAG_PRELIGHT;

   if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
     x = allocation.width - (indicator_size + x);

   gtk_style_context_save (context);
   gtk_style_context_set_state (context, state);

   if (state & GTK_STATE_FLAG_PRELIGHT)
     gtk_render_background (context, cr,
                            border_width, border_width,
                            allocation.width - (2 * border_width),
                            allocation.height - (2 * border_width));

   gtk_style_context_add_class (context, GTK_STYLE_CLASS_CHECK);

   gtk_render_check (context, cr,
 		    x, y, indicator_size, indicator_size);

   gtk_style_context_restore (context);
 }
	/* 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, see <http://www.gnu.org/licenses/>.
	*/

	/*
	* 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 "gtkcheckbutton.h"

	#include "gtkbuttonprivate.h"
	#include "gtklabel.h"

	#include "gtkprivate.h"
	#include "gtkintl.h"


	/**
	* SECTION:gtkcheckbutton
	* @Short_description: Create widgets with a discrete toggle button
	* @Title: GtkCheckButton
	* @See_also: #GtkCheckMenuItem, #GtkButton, #GtkToggleButton, #GtkRadioButton
	*
	* A #GtkCheckButton places a discrete #GtkToggleButton next to a widget,
	* (usually a #GtkLabel). See the section on #GtkToggleButton widgets for
	* more information about toggle/check buttons.
	*
	* The important signal ( #GtkToggleButton::toggled ) is also inherited from
	* #GtkToggleButton.
	*/


	#define INDICATOR_SIZE 16
	#define INDICATOR_SPACING 2


	static void gtk_check_button_get_preferred_width (GtkWidget *widget,
	gint *minimum,
	gint *natural);
	static void gtk_check_button_get_preferred_height (GtkWidget *widget,
	gint *minimum,
	gint *natural);
	static void gtk_check_button_size_allocate (GtkWidget *widget,
	GtkAllocation *allocation);
	static gboolean gtk_check_button_draw (GtkWidget *widget,
	cairo_t *cr);
	static void gtk_check_button_paint (GtkWidget *widget,
	cairo_t *cr);
	static void gtk_check_button_draw_indicator (GtkCheckButton *check_button,
	cairo_t *cr);
	static void gtk_real_check_button_draw_indicator (GtkCheckButton *check_button,
	cairo_t *cr);

	G_DEFINE_TYPE (GtkCheckButton, gtk_check_button, GTK_TYPE_TOGGLE_BUTTON)

	static void
	gtk_check_button_class_init (GtkCheckButtonClass *class)
	{
	GtkWidgetClass *widget_class;

	widget_class = (GtkWidgetClass*) class;

	widget_class->get_preferred_width = gtk_check_button_get_preferred_width;
	widget_class->get_preferred_height = gtk_check_button_get_preferred_height;
	widget_class->size_allocate = gtk_check_button_size_allocate;
	widget_class->draw = gtk_check_button_draw;

	class->draw_indicator = gtk_real_check_button_draw_indicator;

	gtk_widget_class_set_accessible_role (widget_class, ATK_ROLE_CHECK_BOX);

	gtk_widget_class_install_style_property (widget_class,
	g_param_spec_int ("indicator-size",
	P_("Indicator Size"),
	P_("Size of check or radio indicator"),
	0,
	G_MAXINT,
	INDICATOR_SIZE,
	GTK_PARAM_READABLE));
	gtk_widget_class_install_style_property (widget_class,
	g_param_spec_int ("indicator-spacing",
	P_("Indicator Spacing"),
	P_("Spacing around check or radio indicator"),
	0,
	G_MAXINT,
	INDICATOR_SPACING,
	GTK_PARAM_READABLE));
	}

	static void
	draw_indicator_changed (GObject *object,
	GParamSpec *pspec,
	gpointer user_data)
	{
	GtkButton *button = GTK_BUTTON (object);

	if (gtk_toggle_button_get_mode (GTK_TOGGLE_BUTTON (button)))
	gtk_button_set_alignment (button, 0.0, 0.5);
	else
	gtk_button_set_alignment (button, 0.5, 0.5);
	}

	static void
	gtk_check_button_init (GtkCheckButton *check_button)
	{
	gtk_widget_set_receives_default (GTK_WIDGET (check_button), FALSE);
	g_signal_connect (check_button, "notify::draw-indicator", G_CALLBACK (draw_indicator_changed), NULL);
	gtk_toggle_button_set_mode (GTK_TOGGLE_BUTTON (check_button), TRUE);
	}

	/**
	* gtk_check_button_new:
	*
	* Creates a new #GtkCheckButton.
	*
	* Returns: a #GtkWidget.
	*/
	GtkWidget*
	gtk_check_button_new (void)
	{
	return g_object_new (GTK_TYPE_CHECK_BUTTON, NULL);
	}


	/**
	* gtk_check_button_new_with_label:
	* @label: the text for the check button.
	*
	* Creates a new #GtkCheckButton with a #GtkLabel to the right of it.
	*
	* Returns: a #GtkWidget.
	*/
	GtkWidget*
	gtk_check_button_new_with_label (const gchar *label)
	{
	return g_object_new (GTK_TYPE_CHECK_BUTTON, "label", label, NULL);
	}

	/**
	* gtk_check_button_new_with_mnemonic:
	* @label: The text of the button, with an underscore in front of the
	* mnemonic character
	*
	* Creates a new #GtkCheckButton containing a label. The label
	* will be created using gtk_label_new_with_mnemonic(), so underscores
	* in @label indicate the mnemonic for the check button.
	*
	* Returns: a new #GtkCheckButton
	*/
	GtkWidget*
	gtk_check_button_new_with_mnemonic (const gchar *label)
	{
	return g_object_new (GTK_TYPE_CHECK_BUTTON,
	"label", label,
	"use-underline", TRUE,
	NULL);
	}


	/* This should only be called when toggle_button->draw_indicator
	* is true.
	*/
	static void
	gtk_check_button_paint (GtkWidget *widget,
	cairo_t *cr)
	{
	GtkCheckButton *check_button = GTK_CHECK_BUTTON (widget);

	gtk_check_button_draw_indicator (check_button, cr);

	if (gtk_widget_has_visible_focus (widget))
	{
	GtkWidget *child = gtk_bin_get_child (GTK_BIN (widget));
	GtkStyleContext *context;
	GtkAllocation allocation;
	gint border_width;
	gint interior_focus;
	gint focus_width;
	gint focus_pad;

	border_width = gtk_container_get_border_width (GTK_CONTAINER (widget));

	gtk_widget_style_get (widget,
	"interior-focus", &interior_focus,
	"focus-line-width", &focus_width,
	"focus-padding", &focus_pad,
	NULL);

	gtk_widget_get_allocation (widget, &allocation);
	context = gtk_widget_get_style_context (widget);

	if (interior_focus && child && gtk_widget_get_visible (child))
	{
	GtkAllocation child_allocation;

	gtk_widget_get_allocation (child, &child_allocation);
	gtk_render_focus (context, cr,
	child_allocation.x - allocation.x - focus_width - focus_pad,
	child_allocation.y - allocation.y - focus_width - focus_pad,
	child_allocation.width + 2 * (focus_width + focus_pad),
	child_allocation.height + 2 * (focus_width + focus_pad));
	}
	else
	gtk_render_focus (context, cr,
	border_width, border_width,
	allocation.width - 2 * border_width,
	allocation.height - 2 * border_width);
	}
	}

	void
	_gtk_check_button_get_props (GtkCheckButton *check_button,
	gint *indicator_size,
	gint *indicator_spacing)
	{
	GtkWidget *widget = GTK_WIDGET (check_button);

	if (indicator_size)
	gtk_widget_style_get (widget, "indicator-size", indicator_size, NULL);

	if (indicator_spacing)
	gtk_widget_style_get (widget, "indicator-spacing", indicator_spacing, NULL);
	}

	static void
	gtk_check_button_get_preferred_width (GtkWidget *widget,
	gint *minimum,
	gint *natural)
	{
	GtkToggleButton *toggle_button = GTK_TOGGLE_BUTTON (widget);

	if (gtk_toggle_button_get_mode (toggle_button))
	{
	GtkWidget *child;
	gint indicator_size;
	gint indicator_spacing;
	gint focus_width;
	gint focus_pad;
	guint border_width;

	border_width = gtk_container_get_border_width (GTK_CONTAINER (widget));

	gtk_widget_style_get (GTK_WIDGET (widget),
	"focus-line-width", &focus_width,
	"focus-padding", &focus_pad,
	NULL);
	minimum = 2 border_width;
	natural = 2 border_width;

	_gtk_check_button_get_props (GTK_CHECK_BUTTON (widget),
	&indicator_size, &indicator_spacing);

	child = gtk_bin_get_child (GTK_BIN (widget));
	if (child && gtk_widget_get_visible (child))
	{
	gint child_min, child_nat;

	gtk_widget_get_preferred_width (child, &child_min, &child_nat);

	*minimum += child_min + indicator_spacing;
	*natural += child_nat + indicator_spacing;
	}

	minimum += (indicator_size + indicator_spacing 2 + 2 * (focus_width + focus_pad));
	natural += (indicator_size + indicator_spacing 2 + 2 * (focus_width + focus_pad));
	}
	else
	GTK_WIDGET_CLASS (gtk_check_button_parent_class)->get_preferred_width (widget, minimum, natural);
	}

	static void
	gtk_check_button_get_preferred_height (GtkWidget *widget,
	gint *minimum,
	gint *natural)
	{
	GtkToggleButton *toggle_button = GTK_TOGGLE_BUTTON (widget);

	if (gtk_toggle_button_get_mode (toggle_button))
	{
	GtkWidget *child;
	gint temp;
	gint indicator_size;
	gint indicator_spacing;
	gint focus_width;
	gint focus_pad;
	guint border_width;

	border_width = gtk_container_get_border_width (GTK_CONTAINER (widget));

	gtk_widget_style_get (GTK_WIDGET (widget),
	"focus-line-width", &focus_width,
	"focus-padding", &focus_pad,
	NULL);

	minimum = border_width 2;
	natural = border_width 2;

	_gtk_check_button_get_props (GTK_CHECK_BUTTON (widget),
	&indicator_size, &indicator_spacing);

	child = gtk_bin_get_child (GTK_BIN (widget));
	if (child && gtk_widget_get_visible (child))
	{
	gint child_min, child_nat;

	gtk_widget_get_preferred_height (child, &child_min, &child_nat);

	*minimum += child_min;
	*natural += child_nat;
	}

	temp = indicator_size + indicator_spacing * 2;
	minimum = MAX (minimum, temp) + 2 * (focus_width + focus_pad);
	natural = MAX (natural, temp) + 2 * (focus_width + focus_pad);
	}
	else
	GTK_WIDGET_CLASS (gtk_check_button_parent_class)->get_preferred_height (widget, minimum, natural);
	}

	static void
	gtk_check_button_size_allocate (GtkWidget *widget,
	GtkAllocation *allocation)
	{
	GtkCheckButton *check_button;
	GtkToggleButton *toggle_button;
	GtkButton *button;
	GtkAllocation child_allocation;

	button = GTK_BUTTON (widget);
	check_button = GTK_CHECK_BUTTON (widget);
	toggle_button = GTK_TOGGLE_BUTTON (widget);

	if (gtk_toggle_button_get_mode (toggle_button))
	{
	GtkWidget *child;
	gint indicator_size;
	gint indicator_spacing;
	gint focus_width;
	gint focus_pad;

	_gtk_check_button_get_props (check_button, &indicator_size, &indicator_spacing);
	gtk_widget_style_get (widget,
	"focus-line-width", &focus_width,
	"focus-padding", &focus_pad,
	NULL);

	gtk_widget_set_allocation (widget, allocation);

	if (gtk_widget_get_realized (widget))
	gdk_window_move_resize (gtk_button_get_event_window (button),
	allocation->x, allocation->y,
	allocation->width, allocation->height);

	child = gtk_bin_get_child (GTK_BIN (button));
	if (child && gtk_widget_get_visible (child))
	{
	guint border_width = gtk_container_get_border_width (GTK_CONTAINER (widget));

	child_allocation.width = allocation->width -
	((border_width + focus_width + focus_pad) * 2 + indicator_size + indicator_spacing * 3);
	child_allocation.width = MAX (child_allocation.width, 1);

	child_allocation.height = allocation->height - (border_width + focus_width + focus_pad) * 2;
	child_allocation.height = MAX (child_allocation.height, 1);

	child_allocation.x = (border_width + indicator_size + indicator_spacing * 3 +
	allocation->x + focus_width + focus_pad);
	child_allocation.y = allocation->y + (allocation->height - child_allocation.height) / 2;

	if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
	child_allocation.x = allocation->x + allocation->width
	- (child_allocation.x - allocation->x + child_allocation.width);

	gtk_widget_size_allocate (child, &child_allocation);
	}
	}
	else
	GTK_WIDGET_CLASS (gtk_check_button_parent_class)->size_allocate (widget, allocation);
	}

	static gint
	gtk_check_button_draw (GtkWidget *widget,
	cairo_t *cr)
	{
	GtkToggleButton *toggle_button;
	GtkBin *bin;
	GtkWidget *child;

	toggle_button = GTK_TOGGLE_BUTTON (widget);
	bin = GTK_BIN (widget);

	if (gtk_toggle_button_get_mode (toggle_button))
	{
	gtk_check_button_paint (widget, cr);

	child = gtk_bin_get_child (bin);
	if (child)
	gtk_container_propagate_draw (GTK_CONTAINER (widget),
	child,
	cr);
	}
	else if (GTK_WIDGET_CLASS (gtk_check_button_parent_class)->draw)
	GTK_WIDGET_CLASS (gtk_check_button_parent_class)->draw (widget, cr);

	return FALSE;
	}


	static void
	gtk_check_button_draw_indicator (GtkCheckButton *check_button,
	cairo_t *cr)
	{
	GtkCheckButtonClass *class = GTK_CHECK_BUTTON_GET_CLASS (check_button);

	if (class->draw_indicator)
	class->draw_indicator (check_button, cr);
	}

	static void
	gtk_real_check_button_draw_indicator (GtkCheckButton *check_button,
	cairo_t *cr)
	{
	GtkWidget *widget;
	GtkWidget *child;
	GtkButton *button;
	GtkToggleButton *toggle_button;
	GtkStateFlags state = 0;
	gint x, y;
	gint indicator_size;
	gint indicator_spacing;
	gint focus_width;
	gint focus_pad;
	guint border_width;
	gboolean interior_focus;
	GtkAllocation allocation;
	GtkStyleContext *context;

	widget = GTK_WIDGET (check_button);
	button = GTK_BUTTON (check_button);
	toggle_button = GTK_TOGGLE_BUTTON (check_button);

	gtk_widget_get_allocation (widget, &allocation);
	context = gtk_widget_get_style_context (widget);
	state = gtk_widget_get_state_flags (widget);

	gtk_widget_style_get (widget,
	"interior-focus", &interior_focus,
	"focus-line-width", &focus_width,
	"focus-padding", &focus_pad,
	NULL);

	_gtk_check_button_get_props (check_button, &indicator_size, &indicator_spacing);

	border_width = gtk_container_get_border_width (GTK_CONTAINER (widget));

	x = indicator_spacing + border_width;
	y = (allocation.height - indicator_size) / 2;

	child = gtk_bin_get_child (GTK_BIN (check_button));
	if (!interior_focus \|\| !(child && gtk_widget_get_visible (child)))
	x += focus_width + focus_pad;

	state &= ~(GTK_STATE_FLAG_INCONSISTENT \|
	GTK_STATE_FLAG_ACTIVE \|
	GTK_STATE_FLAG_SELECTED \|
	GTK_STATE_FLAG_PRELIGHT);

	if (gtk_toggle_button_get_inconsistent (toggle_button))
	state \|= GTK_STATE_FLAG_INCONSISTENT;
	else if (gtk_toggle_button_get_active (toggle_button) \|\|
	(button->priv->button_down && button->priv->in_button))
	state \|= GTK_STATE_FLAG_ACTIVE;

	if (button->priv->activate_timeout \|\| (button->priv->button_down && button->priv->in_button))
	state \|= GTK_STATE_FLAG_SELECTED;

	if (button->priv->in_button)
	state \|= GTK_STATE_FLAG_PRELIGHT;

	if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
	x = allocation.width - (indicator_size + x);

	gtk_style_context_save (context);
	gtk_style_context_set_state (context, state);

	if (state & GTK_STATE_FLAG_PRELIGHT)
	gtk_render_background (context, cr,
	border_width, border_width,
	allocation.width - (2 * border_width),
	allocation.height - (2 * border_width));

	gtk_style_context_add_class (context, GTK_STYLE_CLASS_CHECK);

	gtk_render_check (context, cr,
	x, y, indicator_size, indicator_size);

	gtk_style_context_restore (context);
	}