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      1 /*
      2  * Copyright (C) 2009 Apple Inc. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions
      6  * are met:
      7  * 1. Redistributions of source code must retain the above copyright
      8  *    notice, this list of conditions and the following disclaimer.
      9  * 2. Redistributions in binary form must reproduce the above copyright
     10  *    notice, this list of conditions and the following disclaimer in the
     11  *    documentation and/or other materials provided with the distribution.
     12  *
     13  * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
     14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
     17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
     21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     24  */
     25 
     26 #ifndef WebLayer_h
     27 #define WebLayer_h
     28 
     29 #if USE(ACCELERATED_COMPOSITING)
     30 
     31 #import <QuartzCore/QuartzCore.h>
     32 
     33 namespace WebCore {
     34     class GraphicsLayer;
     35 }
     36 
     37 // Category implemented by WebLayer and WebTiledLayer.
     38 @interface CALayer(WebLayerAdditions)
     39 
     40 - (void)setLayerOwner:(WebCore::GraphicsLayer*)layer;
     41 - (WebCore::GraphicsLayer*)layerOwner;
     42 
     43 @end
     44 
     45 #if defined(BUILDING_ON_LEOPARD)
     46 @interface CALayer(WebLayerInternal)
     47 - (CGAffineTransform)contentsTransform;
     48 - (void)setContentsTransform:(CGAffineTransform)t;
     49 @end
     50 #endif
     51 
     52 @interface WebLayer : CALayer
     53 {
     54     WebCore::GraphicsLayer* m_layerOwner;
     55 }
     56 
     57 // Class method allows us to share implementation across TiledLayerMac and WebLayer
     58 + (void)drawContents:(WebCore::GraphicsLayer*)layerContents ofLayer:(CALayer*)layer intoContext:(CGContextRef)context;
     59 
     60 @end
     61 
     62 #endif // USE(ACCELERATED_COMPOSITING)
     63 
     64 #endif // WebLayer_h
     65