1 /* 2 * Copyright (C) 2013 Google Inc. All rights reserved. 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 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. 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 APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 15 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 16 * DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY 17 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 18 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 19 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON 20 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 22 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 23 */ 24 25 #include "config.h" 26 27 #include "SkImageFilter.h" 28 #include "platform/graphics/filters/FEBlend.h" 29 #include "platform/graphics/filters/FEGaussianBlur.h" 30 #include "platform/graphics/filters/FEMerge.h" 31 #include "platform/graphics/filters/FilterOperations.h" 32 #include "platform/graphics/filters/ReferenceFilter.h" 33 #include "platform/graphics/filters/SkiaImageFilterBuilder.h" 34 #include "platform/graphics/filters/SourceGraphic.h" 35 #include <gtest/gtest.h> 36 37 using testing::Test; 38 using namespace blink; 39 40 class ImageFilterBuilderTest : public Test { 41 protected: 42 void colorSpaceTest() 43 { 44 // Build filter tree 45 RefPtr<ReferenceFilter> referenceFilter = ReferenceFilter::create(); 46 47 // Add a dummy source graphic input 48 RefPtr<FilterEffect> sourceEffect = referenceFilter->sourceGraphic(); 49 sourceEffect->setOperatingColorSpace(ColorSpaceDeviceRGB); 50 51 // Add a blur effect (with input : source) 52 RefPtr<FilterEffect> blurEffect = 53 FEGaussianBlur::create(referenceFilter.get(), 3.0f, 3.0f); 54 blurEffect->setOperatingColorSpace(ColorSpaceLinearRGB); 55 blurEffect->inputEffects().append(sourceEffect); 56 57 // Add a blend effect (with inputs : blur, source) 58 RefPtr<FilterEffect> blendEffect = 59 FEBlend::create(referenceFilter.get(), WebBlendModeNormal); 60 blendEffect->setOperatingColorSpace(ColorSpaceDeviceRGB); 61 FilterEffectVector& blendInputs = blendEffect->inputEffects(); 62 blendInputs.reserveCapacity(2); 63 blendInputs.append(sourceEffect); 64 blendInputs.append(blurEffect); 65 66 // Add a merge effect (with inputs : blur, blend) 67 RefPtr<FilterEffect> mergeEffect = FEMerge::create(referenceFilter.get()); 68 mergeEffect->setOperatingColorSpace(ColorSpaceLinearRGB); 69 FilterEffectVector& mergeInputs = mergeEffect->inputEffects(); 70 mergeInputs.reserveCapacity(2); 71 mergeInputs.append(blurEffect); 72 mergeInputs.append(blendEffect); 73 referenceFilter->setLastEffect(mergeEffect); 74 75 // Get SkImageFilter resulting tree 76 SkiaImageFilterBuilder builder; 77 RefPtr<SkImageFilter> filter = builder.build(referenceFilter->lastEffect(), ColorSpaceDeviceRGB); 78 79 // Let's check that the resulting tree looks like this : 80 // ColorSpace (Linear->Device) : CS (L->D) 81 // | 82 // Merge (L) 83 // | | 84 // | CS (D->L) 85 // | | 86 // | Blend (D) 87 // | / | 88 // | CS (L->D) | 89 // | / | 90 // Blur (L) | 91 // \ | 92 // CS (D->L) | 93 // \ | 94 // Source Graphic (D) 95 96 EXPECT_EQ(filter->countInputs(), 1); // Should be CS (L->D) 97 SkImageFilter* child = filter->getInput(0); // Should be Merge 98 EXPECT_EQ(child->asColorFilter(0), false); 99 EXPECT_EQ(child->countInputs(), 2); 100 child = child->getInput(1); // Should be CS (D->L) 101 EXPECT_EQ(child->asColorFilter(0), true); 102 EXPECT_EQ(child->countInputs(), 1); 103 child = child->getInput(0); // Should be Blend 104 EXPECT_EQ(child->asColorFilter(0), false); 105 EXPECT_EQ(child->countInputs(), 2); 106 child = child->getInput(0); // Should be CS (L->D) 107 EXPECT_EQ(child->asColorFilter(0), true); 108 EXPECT_EQ(child->countInputs(), 1); 109 child = child->getInput(0); // Should be Blur 110 EXPECT_EQ(child->asColorFilter(0), false); 111 EXPECT_EQ(child->countInputs(), 1); 112 child = child->getInput(0); // Should be CS (D->L) 113 EXPECT_EQ(child->asColorFilter(0), true); 114 EXPECT_EQ(child->countInputs(), 1); 115 } 116 }; 117 118 namespace { 119 120 TEST_F(ImageFilterBuilderTest, testColorSpace) 121 { 122 colorSpaceTest(); 123 } 124 125 } // namespace 126
