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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 DrawExtra_h
     27 #define DrawExtra_h
     28 
     29 #include "config.h"
     30 
     31 #include "Color.h"
     32 #include "IntPoint.h"
     33 #include "IntRect.h"
     34 #include "wtf/HashMap.h"
     35 #include "wtf/Vector.h"
     36 
     37 // Color of the ring copied from framework's holo_light
     38 #define COLOR_HOLO_LIGHT 0x6633B5E5
     39 // Color of the ring copied from framework's holo_dark
     40 #define COLOR_HOLO_DARK 0x660099CC
     41 
     42 class SkCanvas;
     43 class SkRegion;
     44 
     45 namespace WebCore {
     46     class LayerAndroid;
     47     class GLExtras;
     48 }
     49 
     50 using namespace WebCore;
     51 
     52 namespace android {
     53 
     54 class DrawExtra {
     55 public:
     56     virtual ~DrawExtra() {}
     57     virtual void draw(SkCanvas*, LayerAndroid*) {}
     58     virtual void drawGL(GLExtras*, const LayerAndroid*) {}
     59 };
     60 
     61 // A helper extra that has a SkRegion per LayerAndroid
     62 class RegionLayerDrawExtra : public DrawExtra {
     63 public:
     64     RegionLayerDrawExtra();
     65     virtual ~RegionLayerDrawExtra();
     66 
     67     void addHighlightRegion(const LayerAndroid* layer, const Vector<IntRect>& rects,
     68                             const IntPoint& additionalOffset = IntPoint());
     69     virtual void draw(SkCanvas*, LayerAndroid*);
     70     virtual void drawGL(GLExtras*, const LayerAndroid*);
     71 
     72 private:
     73     SkRegion* getHighlightRegionsForLayer(const LayerAndroid* layer);
     74 
     75     typedef HashMap<int, SkRegion* > HighlightRegionMap;
     76     HighlightRegionMap m_highlightRegions;
     77     Color m_highlightColor;
     78 };
     79 
     80 }
     81 
     82 #endif
     83