/* GTK - The GIMP Toolkit

 * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald

 *

 * Insensitive pixmap building code by Eckehard Berns from GNOME Stock

 * Copyright (C) 1997, 1998 Free Software Foundation

 *

 * 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 <math.h>

#undef GDK_DISABLE_DEPRECATED

#undef GTK_DISABLE_DEPRECATED

#define __GTK_PIXMAP_C__

#include "gtkcontainer.h"

#include "gtkpixmap.h"

#include "gtkintl.h"

#include "gtkalias.h"

static gint gtk_pixmap_expose     (GtkWidget       *widget,

				   GdkEventExpose  *event);

static void gtk_pixmap_finalize   (GObject         *object);

static void build_insensitive_pixmap (GtkPixmap *gtkpixmap);

G_DEFINE_TYPE (GtkPixmap, gtk_pixmap, GTK_TYPE_MISC)

static void

gtk_pixmap_class_init (GtkPixmapClass *class)

{

  GObjectClass *gobject_class = G_OBJECT_CLASS (class);

  GtkWidgetClass *widget_class;

  widget_class = (GtkWidgetClass*) class;

  gobject_class->finalize = gtk_pixmap_finalize;

  widget_class->expose_event = gtk_pixmap_expose;

}

static void

gtk_pixmap_init (GtkPixmap *pixmap)

{

  gtk_widget_set_has_window (GTK_WIDGET (pixmap), FALSE);

  pixmap->pixmap = NULL;

  pixmap->mask = NULL;

}

/**

 * gtk_pixmap_new:

 * @mask: (allow-none):

 */

GtkWidget*

gtk_pixmap_new (GdkPixmap *val,

		GdkBitmap *mask)

{

  GtkPixmap *pixmap;

  g_return_val_if_fail (val != NULL, NULL);

  pixmap = gtk_type_new (gtk_pixmap_get_type ());

  pixmap->build_insensitive = TRUE;

  gtk_pixmap_set (pixmap, val, mask);

  return GTK_WIDGET (pixmap);

}

static void

gtk_pixmap_finalize (GObject *object)

{

  gtk_pixmap_set (GTK_PIXMAP (object), NULL, NULL);

  G_OBJECT_CLASS (gtk_pixmap_parent_class)->finalize (object);

}

void

gtk_pixmap_set (GtkPixmap *pixmap,

		GdkPixmap *val,

		GdkBitmap *mask)

{

  gint width;

  gint height;

  gint oldwidth;

  gint oldheight;

  g_return_if_fail (GTK_IS_PIXMAP (pixmap));

  if(GDK_IS_DRAWABLE(val))

    g_return_if_fail (gdk_colormap_get_visual (gtk_widget_get_colormap (GTK_WIDGET (pixmap)))->depth == gdk_drawable_get_depth (GDK_DRAWABLE (val)));

  if (pixmap->pixmap != val)

    {

      oldwidth = GTK_WIDGET (pixmap)->requisition.width;

      oldheight = GTK_WIDGET (pixmap)->requisition.height;

      if (pixmap->pixmap)

	g_object_unref (pixmap->pixmap);

      if (pixmap->pixmap_insensitive)

	g_object_unref (pixmap->pixmap_insensitive);

      pixmap->pixmap = val;

      pixmap->pixmap_insensitive = NULL;

      if (pixmap->pixmap)

	{

	  g_object_ref (pixmap->pixmap);

	  gdk_drawable_get_size (pixmap->pixmap, &width, &height);

	  GTK_WIDGET (pixmap)->requisition.width =

	    width + GTK_MISC (pixmap)->xpad * 2;

	  GTK_WIDGET (pixmap)->requisition.height =

	    height + GTK_MISC (pixmap)->ypad * 2;

	}

      else

	{

	  GTK_WIDGET (pixmap)->requisition.width = 0;

	  GTK_WIDGET (pixmap)->requisition.height = 0;

	}

      if (gtk_widget_get_visible (GTK_WIDGET (pixmap)))

	{

	  if ((GTK_WIDGET (pixmap)->requisition.width != oldwidth) ||

	      (GTK_WIDGET (pixmap)->requisition.height != oldheight))

	    gtk_widget_queue_resize (GTK_WIDGET (pixmap));

	  else

	    gtk_widget_queue_draw (GTK_WIDGET (pixmap));

	}

    }

  if (pixmap->mask != mask)

    {

      if (pixmap->mask)

	g_object_unref (pixmap->mask);

      pixmap->mask = mask;

      if (pixmap->mask)

	g_object_ref (pixmap->mask);

    }

}

void

gtk_pixmap_get (GtkPixmap  *pixmap,

		GdkPixmap **val,

		GdkBitmap **mask)

{

  g_return_if_fail (GTK_IS_PIXMAP (pixmap));

  if (val)

    *val = pixmap->pixmap;

  if (mask)

    *mask = pixmap->mask;

}

static gint

gtk_pixmap_expose (GtkWidget      *widget,

		   GdkEventExpose *event)

{

  GtkPixmap *pixmap;

  GtkMisc *misc;

  gint x, y;

  gfloat xalign;

  g_return_val_if_fail (GTK_IS_PIXMAP (widget), FALSE);

  g_return_val_if_fail (event != NULL, FALSE);

  if (GTK_WIDGET_DRAWABLE (widget))

    {

      pixmap = GTK_PIXMAP (widget);

      misc = GTK_MISC (widget);

      if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_LTR)

	xalign = misc->xalign;

      else

	xalign = 1.0 - misc->xalign;

      x = floor (widget->allocation.x + misc->xpad

		 + ((widget->allocation.width - widget->requisition.width) * xalign));

      y = floor (widget->allocation.y + misc->ypad 

		 + ((widget->allocation.height - widget->requisition.height) * misc->yalign));

      if (pixmap->mask)

	{

	  gdk_gc_set_clip_mask (widget->style->black_gc, pixmap->mask);

	  gdk_gc_set_clip_origin (widget->style->black_gc, x, y);

	}

      if (gtk_widget_get_state (widget) == GTK_STATE_INSENSITIVE

          && pixmap->build_insensitive)

        {

	  if (!pixmap->pixmap_insensitive)

	    build_insensitive_pixmap (pixmap);

          gdk_draw_drawable (widget->window,

                             widget->style->black_gc,

                             pixmap->pixmap_insensitive,

                             0, 0, x, y, -1, -1);

        }

      else

	{

          gdk_draw_drawable (widget->window,

                             widget->style->black_gc,

                             pixmap->pixmap,

                             0, 0, x, y, -1, -1);

	}

      if (pixmap->mask)

	{

	  gdk_gc_set_clip_mask (widget->style->black_gc, NULL);

	  gdk_gc_set_clip_origin (widget->style->black_gc, 0, 0);

	}

    }

  return FALSE;

}

void

gtk_pixmap_set_build_insensitive (GtkPixmap *pixmap, gboolean build)

{

  g_return_if_fail (GTK_IS_PIXMAP (pixmap));

  pixmap->build_insensitive = build;

  if (gtk_widget_get_visible (GTK_WIDGET (pixmap)))

    {

      gtk_widget_queue_draw (GTK_WIDGET (pixmap));

    }

}

static void

build_insensitive_pixmap (GtkPixmap *gtkpixmap)

{

  GdkPixmap *pixmap = gtkpixmap->pixmap;

  GdkPixmap *insensitive;

  gint w, h;

  GdkPixbuf *pixbuf;

  GdkPixbuf *stated;

  gdk_drawable_get_size (pixmap, &w, &h);

  pixbuf = gdk_pixbuf_get_from_drawable (NULL,

                                         pixmap,

                                         gtk_widget_get_colormap (GTK_WIDGET (gtkpixmap)),

                                         0, 0,

                                         0, 0,

                                         w, h);

  stated = gdk_pixbuf_copy (pixbuf);

  gdk_pixbuf_saturate_and_pixelate (pixbuf, stated,

                                    0.8, TRUE);

  g_object_unref (pixbuf);

  pixbuf = NULL;

  insensitive = gdk_pixmap_new (GTK_WIDGET (gtkpixmap)->window, w, h, -1);

  gdk_draw_pixbuf (insensitive,

		   GTK_WIDGET (gtkpixmap)->style->white_gc,

		   stated,

		   0, 0,

		   0, 0,

		   w, h,

		   GDK_RGB_DITHER_NORMAL,

		   0, 0);

  gtkpixmap->pixmap_insensitive = insensitive;

  g_object_unref (stated);

}

#include "gtkaliasdef.c"