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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 PaintTileSetOperation_h
     27 #define PaintTileSetOperation_h
     28 
     29 #include "Tile.h"
     30 #include "QueuedOperation.h"
     31 #include "SkRefCnt.h"
     32 
     33 namespace WebCore {
     34 
     35 class LayerAndroid;
     36 class TilePainter;
     37 class ImageTexture;
     38 
     39 class PaintTileOperation : public QueuedOperation {
     40 public:
     41     PaintTileOperation(Tile* tile, TilePainter* painter,
     42                        GLWebViewState* state, bool isLowResPrefetch);
     43     virtual ~PaintTileOperation();
     44     virtual bool operator==(const QueuedOperation* operation);
     45     virtual void run();
     46     virtual void* uniquePtr() { return m_tile; }
     47     // returns a rendering priority for m_tile, lower values are processed faster
     48     virtual int priority();
     49 
     50     TilePainter* painter() { return m_painter; }
     51     void updatePainter(TilePainter* painter);
     52     float scale() { return m_tile->scale(); }
     53 
     54 private:
     55     Tile* m_tile;
     56     TilePainter* m_painter;
     57     GLWebViewState* m_state;
     58     bool m_isLowResPrefetch;
     59 };
     60 
     61 class ScaleFilter : public OperationFilter {
     62 public:
     63     ScaleFilter(const TilePainter* painter, float scale)
     64         : m_painter(painter)
     65         , m_scale(scale) {}
     66     virtual bool check(QueuedOperation* operation)
     67     {
     68         PaintTileOperation* op = static_cast<PaintTileOperation*>(operation);
     69         return ((op->painter() == m_painter) && (op->scale() != m_scale));
     70     }
     71 private:
     72     const TilePainter* m_painter;
     73     float m_scale;
     74 };
     75 
     76 
     77 class TilePainterFilter : public OperationFilter {
     78 public:
     79     TilePainterFilter(TilePainter* painter) : m_painter(painter) {}
     80     virtual bool check(QueuedOperation* operation)
     81     {
     82         PaintTileOperation* op = static_cast<PaintTileOperation*>(operation);
     83         return op->painter() == m_painter;
     84     }
     85 private:
     86     TilePainter* m_painter;
     87 };
     88 
     89 }
     90 
     91 #endif // PaintTileSetOperation_h
     92