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      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 
     32 class SkPicture;
     33 
     34 namespace WebCore {
     35     class LayerAndroid;
     36 }
     37 
     38 using namespace WebCore;
     39 
     40 namespace android {
     41 
     42 class CachedLayer {
     43 public:
     44 #if USE(ACCELERATED_COMPOSITING)
     45     bool operator<(const CachedLayer& l) const {
     46         return mCachedNodeIndex < l.mCachedNodeIndex;
     47     }
     48     // FIXME: adjustBounds should be renamed globalBounds or toGlobal
     49     IntRect adjustBounds(const LayerAndroid* root, const IntRect& bounds) const;
     50     int cachedNodeIndex() const { return mCachedNodeIndex; }
     51     const IntPoint& getOffset() const { return mOffset; }
     52     const LayerAndroid* layer(const LayerAndroid* root) const;
     53     IntRect localBounds(const IntRect& bounds) const;
     54     SkPicture* picture(const LayerAndroid* root) const;
     55     void reset() { mLayer = 0; }
     56     void setCachedNodeIndex(int index) { mCachedNodeIndex = index; }
     57     void setOffset(const IntPoint& offset) { mOffset = offset; }
     58     void setUniqueId(int uniqueId) { mUniqueId = uniqueId; }
     59     int uniqueId() const { return mUniqueId; }
     60 private:
     61     int mCachedNodeIndex;
     62     mutable const LayerAndroid* mLayer;
     63     IntPoint mOffset;
     64     int mUniqueId;
     65 
     66 #if DUMP_NAV_CACHE
     67 public:
     68     class Debug {
     69 public:
     70         CachedLayer* base() const;
     71         void print() const;
     72         static void printLayerAndroid(const LayerAndroid* );
     73         static void printRootLayerAndroid(const LayerAndroid* );
     74         static int spaces;
     75     } mDebug;
     76 #endif
     77 #endif // USE(ACCELERATED_COMPOSITING)
     78 };
     79 
     80 }
     81 
     82 #endif
     83