1 /*
2 * Copyright 2012, 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 #include "config.h"
27
28 #include "DrawExtra.h"
29 #include "GLExtras.h"
30 #include "LayerAndroid.h"
31 #include "SkCanvas.h"
32 #include "SkRegion.h"
33 #include "WebViewCore.h"
34
RegionLayerDrawExtra()35 RegionLayerDrawExtra::RegionLayerDrawExtra()
36 : m_highlightColor(COLOR_HOLO_LIGHT)
37 {}
38
~RegionLayerDrawExtra()39 RegionLayerDrawExtra::~RegionLayerDrawExtra()
40 {
41 HighlightRegionMap::iterator end = m_highlightRegions.end();
42 for (HighlightRegionMap::iterator it = m_highlightRegions.begin(); it != end; ++it) {
43 delete it->second;
44 it->second = 0;
45 }
46 }
47
getHighlightRegionsForLayer(const LayerAndroid * layer)48 SkRegion* RegionLayerDrawExtra::getHighlightRegionsForLayer(const LayerAndroid* layer)
49 {
50 int layerId = layer ? layer->uniqueId() : 0;
51 return m_highlightRegions.get(layerId);
52 }
53
addHighlightRegion(const LayerAndroid * layer,const Vector<IntRect> & rects,const IntPoint & additionalOffset,const IntRect & clipRect)54 void RegionLayerDrawExtra::addHighlightRegion(const LayerAndroid* layer, const Vector<IntRect>& rects,
55 const IntPoint& additionalOffset,
56 const IntRect& clipRect)
57 {
58 if (rects.isEmpty())
59 return;
60 int layerId = layer ? layer->uniqueId() : 0;
61 SkRegion* region = m_highlightRegions.get(layerId);
62 if (!region) {
63 region = new SkRegion();
64 m_highlightRegions.set(layerId, region);
65 }
66 IntPoint offset = additionalOffset;
67 WebViewCore::layerToAbsoluteOffset(layer, offset);
68 for (size_t i = 0; i < rects.size(); i++) {
69 IntRect r = rects.at(i);
70 if (!clipRect.isEmpty()) {
71 r.intersect(clipRect);
72 if (r.isEmpty())
73 continue; // don't add it to the region
74 }
75 r.move(-offset.x(), -offset.y());
76 region->op(r.x(), r.y(), r.maxX(), r.maxY(), SkRegion::kUnion_Op);
77 }
78 }
79
draw(SkCanvas * canvas,LayerAndroid * layer)80 void RegionLayerDrawExtra::draw(SkCanvas* canvas, LayerAndroid* layer)
81 {
82 SkRegion* region = getHighlightRegionsForLayer(layer);
83 if (!region || region->isEmpty())
84 return;
85 SkRegion::Iterator rgnIter(*region);
86 SkPaint paint;
87 paint.setColor(m_highlightColor.rgb());
88 while (!rgnIter.done()) {
89 const SkIRect& rect = rgnIter.rect();
90 canvas->drawIRect(rect, paint);
91 rgnIter.next();
92 }
93 }
94
drawGL(GLExtras * glExtras,const LayerAndroid * layer)95 void RegionLayerDrawExtra::drawGL(GLExtras* glExtras, const LayerAndroid* layer)
96 {
97 SkRegion* region = getHighlightRegionsForLayer(layer);
98 if (!region || region->isEmpty())
99 return;
100 const TransformationMatrix* transform = layer ? layer->drawTransform() : 0;
101 glExtras->drawRegion(*region, true, false, transform, m_highlightColor);
102 }
103