/*

* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:

*

*/

package javax.microedition.lcdui;

import org.eclipse.swt.widgets.Control;

import org.eclipse.swt.widgets.Widget;

import org.eclipse.swt.graphics.Rectangle;

import org.eclipse.swt.internal.qt.graphics.GraphicsContext;

import org.eclipse.swt.widgets.Internal_PackageSupport;

import org.eclipse.swt.internal.qt.graphics.WindowSurface;

final class CanvasBufferSymbian extends Buffer

{

    private Canvas host;

    private WindowSurface surface;

    CanvasBufferSymbian(Canvas canvas, Control ctrl)

    {

        super();

        setControlBounds(ctrl);

        host = canvas;

    }

    void ensureWindowSurface() 

    {

    	if(surface == null)

    	{

    	    surface = Internal_PackageSupport.getWindowsurface(host.getShell());

    	}

    }

    void beginPaint(int x, int y, int w, int h) {

		ensureWindowSurface();

		Rectangle rect = toWindowCoordinates(x, y, w, h);

		surface.beginPaint(rect.x, rect.y, rect.width, rect.height);		

	}

    void endPaint() {

		surface.endPaint();

	}

	void blit(GraphicsContext gc, Widget widget)

	{

	    if( surface != null )

	    {

    		surface.flush();

    	}

	}

    int getHostType()

    {

        return HOST_TYPE_CANVAS;

    }

    Object getHost()

    {

        return host;

    }

    void bindToHost(GraphicsContext gc)

    {

    	gc.bindTarget(surface);

    }

	boolean isPaintingActive() {

		return false;

	}

    WindowSurface getWindowSurface()

    {

        return surface;

    }

}