/* 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 "gtkcheckbutton.h"

#include "gtklabel.h"

#include "gtkprivate.h"

#include "gtkintl.h"

#include "gtkalias.h"

#define INDICATOR_SIZE     13

#define INDICATOR_SPACING  2

static void gtk_check_button_size_request        (GtkWidget           *widget,

						  GtkRequisition      *requisition);

static void gtk_check_button_size_allocate       (GtkWidget           *widget,

						  GtkAllocation       *allocation);

static gint gtk_check_button_expose              (GtkWidget           *widget,

						  GdkEventExpose      *event);

static void gtk_check_button_paint               (GtkWidget           *widget,

						  GdkRectangle        *area);

static void gtk_check_button_draw_indicator      (GtkCheckButton      *check_button,

						  GdkRectangle        *area);

static void gtk_real_check_button_draw_indicator (GtkCheckButton      *check_button,

						  GdkRectangle        *area);

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->size_request = gtk_check_button_size_request;

  widget_class->size_allocate = gtk_check_button_size_allocate;

  widget_class->expose_event = gtk_check_button_expose;

  class->draw_indicator = gtk_real_check_button_draw_indicator;

  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

gtk_check_button_init (GtkCheckButton *check_button)

{

  gtk_widget_set_has_window (GTK_WIDGET (check_button), FALSE);

  gtk_widget_set_receives_default (GTK_WIDGET (check_button), FALSE);

  GTK_TOGGLE_BUTTON (check_button)->draw_indicator = TRUE;

  GTK_BUTTON (check_button)->depress_on_activate = FALSE;

}

GtkWidget*

gtk_check_button_new (void)

{

  return g_object_new (GTK_TYPE_CHECK_BUTTON, NULL);

}

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

 * @returns: a new #GtkCheckButton

 *

 * 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.

 **/

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,

			GdkRectangle *area)

{

  GtkCheckButton *check_button = GTK_CHECK_BUTTON (widget);

  if (gtk_widget_is_drawable (widget))

    {

      gint border_width;

      gint interior_focus;

      gint focus_width;

      gint focus_pad;

      gtk_widget_style_get (widget,

			    "interior-focus", &interior_focus,

			    "focus-line-width", &focus_width,

			    "focus-padding", &focus_pad,

			    NULL);

      gtk_check_button_draw_indicator (check_button, area);

      border_width = GTK_CONTAINER (widget)->border_width;

      if (gtk_widget_has_focus (widget))

	{

	  GtkWidget *child = GTK_BIN (widget)->child;

	  if (interior_focus && child && gtk_widget_get_visible (child))

	    gtk_paint_focus (widget->style, widget->window, gtk_widget_get_state (widget),

			     area, widget, "checkbutton",

			     child->allocation.x - focus_width - focus_pad,

			     child->allocation.y - focus_width - focus_pad,

			     child->allocation.width + 2 * (focus_width + focus_pad),

			     child->allocation.height + 2 * (focus_width + focus_pad));

	  else

	    gtk_paint_focus (widget->style, widget->window, gtk_widget_get_state (widget),

			     area, widget, "checkbutton",

			     border_width + widget->allocation.x,

			     border_width + widget->allocation.y,

			     widget->allocation.width - 2 * border_width,

			     widget->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_size_request (GtkWidget      *widget,

			       GtkRequisition *requisition)

{

  GtkToggleButton *toggle_button = GTK_TOGGLE_BUTTON (widget);

  if (toggle_button->draw_indicator)

    {

      GtkWidget *child;

      gint temp;

      gint indicator_size;

      gint indicator_spacing;

      gint border_width = GTK_CONTAINER (widget)->border_width;

      gint focus_width;

      gint focus_pad;

      gtk_widget_style_get (GTK_WIDGET (widget),

			    "focus-line-width", &focus_width,

			    "focus-padding", &focus_pad,

			    NULL);

      requisition->width = border_width * 2;

      requisition->height = border_width * 2;

      _gtk_check_button_get_props (GTK_CHECK_BUTTON (widget),

 				   &indicator_size, &indicator_spacing);

      child = GTK_BIN (widget)->child;

      if (child && gtk_widget_get_visible (child))

	{

	  GtkRequisition child_requisition;

	  gtk_widget_size_request (child, &child_requisition);

	  requisition->width += child_requisition.width + indicator_spacing;

	  requisition->height += child_requisition.height;

	}

      requisition->width += (indicator_size + indicator_spacing * 2 + 2 * (focus_width + focus_pad));

      temp = indicator_size + indicator_spacing * 2;

      requisition->height = MAX (requisition->height, temp) + 2 * (focus_width + focus_pad);

    }

  else

    GTK_WIDGET_CLASS (gtk_check_button_parent_class)->size_request (widget, requisition);

}

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 (toggle_button->draw_indicator)

    {

      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);

      widget->allocation = *allocation;

      if (gtk_widget_get_realized (widget))

	gdk_window_move_resize (button->event_window,

				allocation->x, allocation->y,

				allocation->width, allocation->height);

      if (GTK_BIN (button)->child && gtk_widget_get_visible (GTK_BIN (button)->child))

	{

	  GtkRequisition child_requisition;

 	  gint border_width = GTK_CONTAINER (widget)->border_width;

	  gtk_widget_get_child_requisition (GTK_BIN (button)->child, &child_requisition);

	  child_allocation.width = MIN (child_requisition.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 = MIN (child_requisition.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 +

				widget->allocation.x + focus_width + focus_pad);

	  child_allocation.y = widget->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 (GTK_BIN (button)->child, &child_allocation);

	}

    }

  else

    GTK_WIDGET_CLASS (gtk_check_button_parent_class)->size_allocate (widget, allocation);

}

static gint

gtk_check_button_expose (GtkWidget      *widget,

			 GdkEventExpose *event)

{

  GtkToggleButton *toggle_button;

  GtkBin *bin;

  toggle_button = GTK_TOGGLE_BUTTON (widget);

  bin = GTK_BIN (widget);

  if (gtk_widget_is_drawable (widget))

    {

      if (toggle_button->draw_indicator)

	{

	  gtk_check_button_paint (widget, &event->area);

	  if (bin->child)

	    gtk_container_propagate_expose (GTK_CONTAINER (widget),

					    bin->child,

					    event);

	}

      else if (GTK_WIDGET_CLASS (gtk_check_button_parent_class)->expose_event)

	GTK_WIDGET_CLASS (gtk_check_button_parent_class)->expose_event (widget, event);

    }

  return FALSE;

}

static void

gtk_check_button_draw_indicator (GtkCheckButton *check_button,

				 GdkRectangle   *area)

{

  GtkCheckButtonClass *class;

  g_return_if_fail (GTK_IS_CHECK_BUTTON (check_button));

  class = GTK_CHECK_BUTTON_GET_CLASS (check_button);

  if (class->draw_indicator)

    class->draw_indicator (check_button, area);

}

static void

gtk_real_check_button_draw_indicator (GtkCheckButton *check_button,

				      GdkRectangle   *area)

{

  GtkWidget *widget;

  GtkWidget *child;

  GtkButton *button;

  GtkToggleButton *toggle_button;

  GtkStateType state_type;

  GtkShadowType shadow_type;

  gint x, y;

  gint indicator_size;

  gint indicator_spacing;

  gint focus_width;

  gint focus_pad;

  gboolean interior_focus;

  widget = GTK_WIDGET (check_button);

  if (gtk_widget_is_drawable (widget))

    {

      button = GTK_BUTTON (check_button);

      toggle_button = GTK_TOGGLE_BUTTON (check_button);

      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);

      x = widget->allocation.x + indicator_spacing + GTK_CONTAINER (widget)->border_width;

      y = widget->allocation.y + (widget->allocation.height - indicator_size) / 2;

      child = GTK_BIN (check_button)->child;

      if (!interior_focus || !(child && gtk_widget_get_visible (child)))

	x += focus_width + focus_pad;      

      if (toggle_button->inconsistent)

	shadow_type = GTK_SHADOW_ETCHED_IN;

      else if (toggle_button->active)

	shadow_type = GTK_SHADOW_IN;

      else

	shadow_type = GTK_SHADOW_OUT;

      if (button->activate_timeout || (button->button_down && button->in_button))

	state_type = GTK_STATE_ACTIVE;

      else if (button->in_button)

	state_type = GTK_STATE_PRELIGHT;

      else if (!gtk_widget_is_sensitive (widget))

	state_type = GTK_STATE_INSENSITIVE;

      else

	state_type = GTK_STATE_NORMAL;

      if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)

	x = widget->allocation.x + widget->allocation.width - (indicator_size + x - widget->allocation.x);

      if (gtk_widget_get_state (widget) == GTK_STATE_PRELIGHT)

	{

	  GdkRectangle restrict_area;

	  GdkRectangle new_area;

	  restrict_area.x = widget->allocation.x + GTK_CONTAINER (widget)->border_width;

	  restrict_area.y = widget->allocation.y + GTK_CONTAINER (widget)->border_width;

	  restrict_area.width = widget->allocation.width - (2 * GTK_CONTAINER (widget)->border_width);

	  restrict_area.height = widget->allocation.height - (2 * GTK_CONTAINER (widget)->border_width);

	  if (gdk_rectangle_intersect (area, &restrict_area, &new_area))

	    {

	      gtk_paint_flat_box (widget->style, widget->window, GTK_STATE_PRELIGHT,

				  GTK_SHADOW_ETCHED_OUT, 

				  area, widget, "checkbutton",

				  new_area.x, new_area.y,

				  new_area.width, new_area.height);

	    }

	}

      gtk_paint_check (widget->style, widget->window,

		       state_type, shadow_type,

		       area, widget, "checkbutton",

		       x, y, indicator_size, indicator_size);

    }

}

#define __GTK_CHECK_BUTTON_C__

#include "gtkaliasdef.c"