1 /* 2 * Copyright (C) 2004, 2005, 2006, 2007 Nikolas Zimmermann <zimmermann (at) kde.org> 3 * Copyright (C) 2004, 2005 Rob Buis <buis (at) kde.org> 4 * Copyright (C) 2005 Eric Seidel <eric (at) webkit.org> 5 * Copyright (C) 2009 Dirk Schulze <krit (at) webkit.org> 6 * Copyright (C) 2013 Google Inc. All rights reserved. 7 * 8 * This library is free software; you can redistribute it and/or 9 * modify it under the terms of the GNU Library General Public 10 * License as published by the Free Software Foundation; either 11 * version 2 of the License, or (at your option) any later version. 12 * 13 * This library is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 16 * Library General Public License for more details. 17 * 18 * You should have received a copy of the GNU Library General Public License 19 * along with this library; see the file COPYING.LIB. If not, write to 20 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 21 * Boston, MA 02110-1301, USA. 22 */ 23 24 #include "config.h" 25 26 #include "core/platform/graphics/filters/FEFlood.h" 27 28 #include "SkFlattenableBuffers.h" 29 #include "SkImageFilter.h" 30 #include "core/platform/graphics/GraphicsContext.h" 31 #include "core/platform/graphics/filters/Filter.h" 32 #include "core/platform/text/TextStream.h" 33 #include "core/rendering/RenderTreeAsText.h" 34 #include "third_party/skia/include/core/SkDevice.h" 35 36 namespace { 37 38 class FloodImageFilter : public SkImageFilter { 39 public: 40 FloodImageFilter(const SkColor& color) 41 : SkImageFilter(0, 0) 42 , m_color(color) 43 { 44 } 45 SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(FloodImageFilter) 46 47 FloodImageFilter(SkFlattenableReadBuffer& buffer) : SkImageFilter(buffer) 48 { 49 m_color = buffer.readColor(); 50 } 51 52 virtual void flatten(SkFlattenableWriteBuffer& buffer) const 53 { 54 buffer.writeColor(m_color); 55 } 56 57 virtual bool onFilterImage(Proxy* proxy, const SkBitmap& src, const SkMatrix&, SkBitmap* result, SkIPoint*) 58 { 59 if (!src.width() || !src.height()) 60 return false; 61 62 SkAutoTUnref<SkDevice> device(proxy->createDevice(src.width(), src.height())); 63 SkCanvas canvas(device.get()); 64 SkPaint paint; 65 paint.setColor(m_color); 66 canvas.drawRect(SkRect::MakeWH(src.width(), src.height()), paint); 67 *result = device->accessBitmap(false); 68 return true; 69 } 70 private: 71 SkColor m_color; 72 }; 73 74 }; // unnamed namespace 75 76 namespace WebCore { 77 78 FEFlood::FEFlood(Filter* filter, const Color& floodColor, float floodOpacity) 79 : FilterEffect(filter) 80 , m_floodColor(floodColor) 81 , m_floodOpacity(floodOpacity) 82 { 83 FilterEffect::setOperatingColorSpace(ColorSpaceDeviceRGB); 84 FilterEffect::setResultColorSpace(ColorSpaceDeviceRGB); 85 } 86 87 PassRefPtr<FEFlood> FEFlood::create(Filter* filter, const Color& floodColor, float floodOpacity) 88 { 89 return adoptRef(new FEFlood(filter, floodColor, floodOpacity)); 90 } 91 92 Color FEFlood::floodColor() const 93 { 94 return m_floodColor; 95 } 96 97 bool FEFlood::setFloodColor(const Color& color) 98 { 99 if (m_floodColor == color) 100 return false; 101 m_floodColor = color; 102 return true; 103 } 104 105 float FEFlood::floodOpacity() const 106 { 107 return m_floodOpacity; 108 } 109 110 bool FEFlood::setFloodOpacity(float floodOpacity) 111 { 112 if (m_floodOpacity == floodOpacity) 113 return false; 114 m_floodOpacity = floodOpacity; 115 return true; 116 } 117 118 void FEFlood::applySoftware() 119 { 120 ImageBuffer* resultImage = createImageBufferResult(); 121 if (!resultImage) 122 return; 123 124 Color color = colorWithOverrideAlpha(floodColor().rgb(), floodOpacity()); 125 resultImage->context()->fillRect(FloatRect(FloatPoint(), absolutePaintRect().size()), color); 126 } 127 128 PassRefPtr<SkImageFilter> FEFlood::createImageFilter(SkiaImageFilterBuilder* builder) 129 { 130 Color color = colorWithOverrideAlpha(floodColor().rgb(), floodOpacity()); 131 return adoptRef(new FloodImageFilter(color.rgb())); 132 } 133 134 TextStream& FEFlood::externalRepresentation(TextStream& ts, int indent) const 135 { 136 writeIndent(ts, indent); 137 ts << "[feFlood"; 138 FilterEffect::externalRepresentation(ts); 139 ts << " flood-color=\"" << floodColor().nameForRenderTreeAsText() << "\" " 140 << "flood-opacity=\"" << floodOpacity() << "\"]\n"; 141 return ts; 142 } 143 144 } // namespace WebCore 145