1/*
2 * Copyright 2010, The Android Open Source Project
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 *  * Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 *  * 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 THE COPYRIGHT HOLDERS ``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 THE COPYRIGHT OWNER 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 CachedLayer_h
27#define CachedLayer_h
28
29#include "CachedDebug.h"
30#include "IntRect.h"
31
32class SkPicture;
33
34namespace WebCore {
35    class FloatPoint;
36    class LayerAndroid;
37}
38
39using namespace WebCore;
40
41namespace android {
42
43class CachedLayer {
44public:
45#if USE(ACCELERATED_COMPOSITING)
46    bool operator<(const CachedLayer& l) const {
47        return mCachedNodeIndex < l.mCachedNodeIndex;
48    }
49    // FIXME: adjustBounds should be renamed globalBounds or toGlobal
50    IntRect adjustBounds(const LayerAndroid* root, const IntRect& bounds) const;
51    int cachedNodeIndex() const { return mCachedNodeIndex; }
52    FloatPoint getGlobalPosition(const LayerAndroid* ) const;
53    const LayerAndroid* layer(const LayerAndroid* root) const;
54    IntRect localBounds(const LayerAndroid* root, const IntRect& bounds) const;
55    SkPicture* picture(const LayerAndroid* root) const;
56    void toLocal(const LayerAndroid* root, int* xPtr, int* yPtr) const;
57    void setCachedNodeIndex(int index) { mCachedNodeIndex = index; }
58    // Set the global position of the layer.  This is recorded by the nav cache
59    // and corresponds to RenderLayer::absoluteBoundingBox() which is in
60    // document coordinates.  This can be different from the global position of
61    // the layer if the layer is fixed positioned or scrollable.
62    void setOffset(const IntPoint& offset) { mOffset = offset; }
63    void setUniqueId(int uniqueId) { mUniqueId = uniqueId; }
64    int uniqueId() const { return mUniqueId; }
65private:
66    int mCachedNodeIndex;
67    IntPoint mOffset;
68    int mUniqueId;
69
70#if DUMP_NAV_CACHE
71public:
72    class Debug {
73public:
74        CachedLayer* base() const;
75        void print() const;
76        static void printLayerAndroid(const LayerAndroid* );
77        static void printRootLayerAndroid(const LayerAndroid* );
78        static int spaces;
79    } mDebug;
80#endif
81#endif // USE(ACCELERATED_COMPOSITING)
82};
83
84}
85
86#endif
87