WebCore/WebLayer.h

   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 - (float)contentsScale;
  44 - (void)setContentsScale:(float)scale;
  45
  46 @end
  47
  48 @interface WebLayer : CALayer
  49 {
  50     WebCore::GraphicsLayer* m_layerOwner;
  51     float m_contentsScale;
  52 }
  53
  54 // Class method allows us to share implementation across TiledLayerMac and WebLayer
  55 + (void)drawContents:(WebCore::GraphicsLayer*)layerContents ofLayer:(CALayer*)layer intoContext:(CGContextRef)context;
  56
  57 @end
  58
  59 #endif // USE(ACCELERATED_COMPOSITING)
  60
  61 #endif // WebLayer_h