/* 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 "gtkdrawingarea.h"

#include "gtkintl.h"

#include "gtkalias.h"

static void gtk_drawing_area_realize       (GtkWidget           *widget);

static void gtk_drawing_area_size_allocate (GtkWidget           *widget,

					    GtkAllocation       *allocation);

static void gtk_drawing_area_send_configure (GtkDrawingArea     *darea);

G_DEFINE_TYPE (GtkDrawingArea, gtk_drawing_area, GTK_TYPE_WIDGET)

static void

gtk_drawing_area_class_init (GtkDrawingAreaClass *class)

{

  GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);

  widget_class->realize = gtk_drawing_area_realize;

  widget_class->size_allocate = gtk_drawing_area_size_allocate;

}

static void

gtk_drawing_area_init (GtkDrawingArea *darea)

{

  darea->draw_data = NULL;

}

GtkWidget*

gtk_drawing_area_new (void)

{

  return g_object_new (GTK_TYPE_DRAWING_AREA, NULL);

}

void

gtk_drawing_area_size (GtkDrawingArea *darea,

		       gint            width,

		       gint            height)

{

  g_return_if_fail (GTK_IS_DRAWING_AREA (darea));

  GTK_WIDGET (darea)->requisition.width = width;

  GTK_WIDGET (darea)->requisition.height = height;

  gtk_widget_queue_resize (GTK_WIDGET (darea));

}

static void

gtk_drawing_area_realize (GtkWidget *widget)

{

  GtkDrawingArea *darea = GTK_DRAWING_AREA (widget);

  GdkWindowAttr attributes;

  gint attributes_mask;

  if (!gtk_widget_get_has_window (widget))

    {

      GTK_WIDGET_CLASS (gtk_drawing_area_parent_class)->realize (widget);

    }

  else

    {

      gtk_widget_set_realized (widget, TRUE);

      attributes.window_type = GDK_WINDOW_CHILD;

      attributes.x = widget->allocation.x;

      attributes.y = widget->allocation.y;

      attributes.width = widget->allocation.width;

      attributes.height = widget->allocation.height;

      attributes.wclass = GDK_INPUT_OUTPUT;

      attributes.visual = gtk_widget_get_visual (widget);

      attributes.colormap = gtk_widget_get_colormap (widget);

      attributes.event_mask = gtk_widget_get_events (widget) | GDK_EXPOSURE_MASK;

      attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;

      widget->window = gdk_window_new (gtk_widget_get_parent_window (widget),

                                       &attributes, attributes_mask);

      gdk_window_set_user_data (widget->window, darea);

      widget->style = gtk_style_attach (widget->style, widget->window);

      gtk_style_set_background (widget->style, widget->window, GTK_STATE_NORMAL);

    }

  gtk_drawing_area_send_configure (GTK_DRAWING_AREA (widget));

}

static void

gtk_drawing_area_size_allocate (GtkWidget     *widget,

				GtkAllocation *allocation)

{

  g_return_if_fail (GTK_IS_DRAWING_AREA (widget));

  g_return_if_fail (allocation != NULL);

  widget->allocation = *allocation;

  if (gtk_widget_get_realized (widget))

    {

      if (gtk_widget_get_has_window (widget))

        gdk_window_move_resize (widget->window,

                                allocation->x, allocation->y,

                                allocation->width, allocation->height);

      gtk_drawing_area_send_configure (GTK_DRAWING_AREA (widget));

    }

}

static void

gtk_drawing_area_send_configure (GtkDrawingArea *darea)

{

  GtkWidget *widget;

  GdkEvent *event = gdk_event_new (GDK_CONFIGURE);

  widget = GTK_WIDGET (darea);

  event->configure.window = g_object_ref (widget->window);

  event->configure.send_event = TRUE;

  event->configure.x = widget->allocation.x;

  event->configure.y = widget->allocation.y;

  event->configure.width = widget->allocation.width;

  event->configure.height = widget->allocation.height;

  gtk_widget_event (widget, event);

  gdk_event_free (event);

}

#define __GTK_DRAWING_AREA_C__

#include "gtkaliasdef.c"