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
42class SkCanvas;
43class SkRegion;
44
45namespace WebCore {
46    class LayerAndroid;
47    class GLExtras;
48}
49
50using namespace WebCore;
51
52namespace android {
53
54class DrawExtra {
55public:
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
62class RegionLayerDrawExtra : public DrawExtra {
63public:
64    RegionLayerDrawExtra();
65    virtual ~RegionLayerDrawExtra();
66
67    void addHighlightRegion(const LayerAndroid* layer, const Vector<IntRect>& rects,
68                            const IntPoint& additionalOffset = IntPoint(),
69                            const IntRect& clipRect = IntRect());
70    virtual void draw(SkCanvas*, LayerAndroid*);
71    virtual void drawGL(GLExtras*, const LayerAndroid*);
72
73private:
74    SkRegion* getHighlightRegionsForLayer(const LayerAndroid* layer);
75
76    typedef HashMap<int, SkRegion* > HighlightRegionMap;
77    HighlightRegionMap m_highlightRegions;
78    Color m_highlightColor;
79};
80
81}
82
83#endif
84