/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
 *
 * The contents of this file are subject to the Mozilla Public
 * License Version 1.1 (the "License"); you may not use this file
 * except in compliance with the License. You may obtain a copy of
 * the License at http://www.mozilla.org/MPL/
 * 
 * Software distributed under the License is distributed on an "AS
 * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
 * implied. See the License for the specific language governing
 * rights and limitations under the License.
 * 
 * The Original Code is the Mozilla browser.
 * 
 * The Initial Developer of the Original Code is Netscape
 * Communications Corporation. Portions created by Netscape are
 * Copyright (C) 1999 Netscape Communications Corporation. All
 * Rights Reserved.
 * 
 * Contributor(s): 
 * syd@netscape.com 2/12/00. 
 * pavlov@netscape.com 2/13/00.
 */

#include "nsNativeAppSupport.h"
#include "gdk/gdk.h"
#include "gdk/gdkprivate.h"

class nsSplashScreenGtk : public nsISplashScreen {
public:
  nsSplashScreenGtk();
  virtual ~nsSplashScreenGtk();

  NS_IMETHOD Show();
  NS_IMETHOD Hide();

  NS_DECL_ISUPPORTS

  GdkWindow *mDialog;
}; // class nsSplashScreenGtk

NS_IMPL_ISUPPORTS0(nsSplashScreenGtk)

nsSplashScreenGtk::nsSplashScreenGtk()
{
  NS_INIT_REFCNT();
  // if this fails, we exit
  gdk_init( 0, NULL );
}

nsSplashScreenGtk::~nsSplashScreenGtk()
{
  Hide();
}

NS_IMETHODIMP nsSplashScreenGtk::Show()
{
  GdkPixmap *pmap;
  GdkBitmap *mask;
  GdkWindowAttr attr;
  int c, width, height, num_cols, cpp;

  FILE *fp;
  GdkColor transparentColor;

  /* figure out what we are dealing with here */

  if ( ( fp = fopen( "splash.xpm", "r" ) ) == (FILE *) NULL ) 
    return NS_ERROR_FAILURE;
 
  // find the first '"'
 
  while ( !feof( fp ) ) {
    c = fgetc( fp );
    if ( c == '"' )
      break;
  } 
  
  if (feof(fp)) {
    fclose( fp );
    return NS_ERROR_FAILURE;
  }
  
  /* read size info */

  fscanf( fp, "%d %d %d %d", &width, &height, &num_cols, &cpp );

  fclose( fp );

  /* create a window */

  attr.window_type = GDK_WINDOW_TOPLEVEL;
  attr.wclass = GDK_INPUT_OUTPUT;
  attr.x = gdk_screen_width() >> 1; attr.x -= width >> 1;
  attr.y = gdk_screen_height() >> 1; attr.y -= height >> 1;
  attr.width = width;
  attr.height = height;
  attr.event_mask = 0;

  mDialog = gdk_window_new( NULL, &attr, GDK_WA_X | GDK_WA_Y );	
  gdk_window_set_override_redirect(mDialog, PR_TRUE);
  gdk_window_show( mDialog );

  gdk_flush();

  /* create a pixmap based on xpm data */

  pmap = gdk_pixmap_colormap_create_from_xpm(mDialog, 
                                             gdk_colormap_get_system(),
                                             &mask,
                                             &transparentColor,
                                             "splash.xpm" );

  if ( !pmap ) {
    gdk_window_destroy(mDialog);
    mDialog = nsnull;
    return NS_ERROR_FAILURE;
  }

  GdkGC *gc;

  gc = gdk_gc_new( mDialog );

  gdk_window_copy_area( mDialog, gc, 0, 0, pmap, 0, 0, width, height );

  gdk_flush();

  gdk_gc_destroy(gc);
  
  return NS_OK;
}

NS_IMETHODIMP nsSplashScreenGtk::Hide()
{
	if (mDialog) {
    gdk_window_destroy(mDialog);
    mDialog = nsnull;
	}
  return NS_OK;
}

nsresult NS_CreateSplashScreen(nsISplashScreen**aResult)
{
  if ( aResult ) {	
    *aResult = new nsSplashScreenGtk;
    if ( *aResult ) {
      NS_ADDREF( *aResult );
      return NS_OK;
    } else {
      return NS_ERROR_OUT_OF_MEMORY;
    }
  } else {
    return NS_ERROR_NULL_POINTER;
  }
}

PRBool NS_CanRun() 
{
	return PR_TRUE;
}