1 /*

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

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

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

     6 * which accompanies this distribution, and is available

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

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description:

    15 *

    16 */

    17 package javax.microedition.lcdui;

    18 

    19 import org.eclipse.swt.widgets.Control;

    20 import org.eclipse.swt.widgets.Widget;

    21 import org.eclipse.swt.graphics.Rectangle;

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

    23 import org.eclipse.swt.widgets.Internal_PackageSupport;

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

    25 

    26 final class CanvasBufferSymbian extends Buffer

    27 {

    28     private Canvas host;

    29     private WindowSurface surface;

    30 

    31     CanvasBufferSymbian(Canvas canvas, Control ctrl)

    32     {

    33         super();

    34         setControlBounds(ctrl);

    35         host = canvas;

    36     }

    37     

    38     void ensureWindowSurface() 

    39     {

    40     	if(surface == null)

    41     	{

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

    43     	}

    44     }

    45     

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

    47 		ensureWindowSurface();

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

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

    50 	}

    51 	

    52     void endPaint() {

    53 		surface.endPaint();

    54 	}

    55 	

    56 	void blit(GraphicsContext gc, Widget widget)

    57 	{

    58 	    if( surface != null )

    59 	    {

    60     		surface.flush();

    61     	}

    62 	}

    63 	

    64     int getHostType()

    65     {

    66         return HOST_TYPE_CANVAS;

    67     }

    68 

    69     Object getHost()

    70     {

    71         return host;

    72     }

    73 

    74     void bindToHost(GraphicsContext gc)

    75     {

    76     	gc.bindTarget(surface);

    77     }

    78 

    79 	boolean isPaintingActive() {

    80 		return false;

    81 	}

    82 	

    83     WindowSurface getWindowSurface()

    84     {

    85         return surface;

    86     }

    87 }