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 35 RegionLayerDrawExtra::RegionLayerDrawExtra() 36 : m_highlightColor(COLOR_HOLO_LIGHT) 37 {} 38 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 48 SkRegion* RegionLayerDrawExtra::getHighlightRegionsForLayer(const LayerAndroid* layer) 49 { 50 int layerId = layer ? layer->uniqueId() : 0; 51 return m_highlightRegions.get(layerId); 52 } 53 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 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 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