1/*
2 * Copyright (C) 2011 Google 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 *
8 * 1.  Redistributions of source code must retain the above copyright
9 *     notice, this list of conditions and the following disclaimer.
10 * 2.  Redistributions in binary form must reproduce the above copyright
11 *     notice, this list of conditions and the following disclaimer in the
12 *     documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
16 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
17 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
18 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
19 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
20 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
21 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#ifndef WebContentLayer_h
27#define WebContentLayer_h
28
29#include "WebCommon.h"
30#include "WebLayer.h"
31
32namespace blink {
33
34class WebContentLayer {
35public:
36    virtual ~WebContentLayer() { }
37
38    // The WebContentLayer has ownership of this wrapper.
39    virtual WebLayer* layer() = 0;
40
41    // Set to true if the backside of this layer's contents should be visible when composited.
42    // Defaults to false.
43    virtual void setDoubleSided(bool) = 0;
44
45    // Allow the compositor to determine the scale at which the layer should
46    // be rasterized based on the layer's hierarchy and transform. This defaults
47    // to false.
48    virtual void setAutomaticallyComputeRasterScale(bool) { }
49
50    // Set to draw a system-defined checkerboard if the compositor would otherwise draw a tile in this layer
51    // and the actual contents are unavailable. If false, the compositor will draw the layer's background color
52    // for these tiles.
53    // Defaults to false.
54    virtual void setDrawCheckerboardForMissingTiles(bool) = 0;
55};
56
57} // namespace blink
58
59#endif // WebContentLayer_h
60