1 /* 2 * Copyright (C) 2015 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #include "CanvasState.h" 18 19 #include "Matrix.h" 20 #include "Rect.h" 21 #include "hwui/Canvas.h" 22 #include "utils/LinearAllocator.h" 23 24 #include <gtest/gtest.h> 25 #include <SkPath.h> 26 #include <SkRegion.h> 27 28 namespace android { 29 namespace uirenderer { 30 31 class NullClient: public CanvasStateClient { 32 void onViewportInitialized() override {} 33 void onSnapshotRestored(const Snapshot& removed, const Snapshot& restored) {} 34 GLuint getTargetFbo() const override { return 0; } 35 }; 36 37 static NullClient sNullClient; 38 39 static bool approxEqual(const Matrix4& a, const Matrix4& b) { 40 for (int i = 0; i < 16; i++) { 41 if (!MathUtils::areEqual(a[i], b[i])) { 42 return false; 43 } 44 } 45 return true; 46 } 47 48 TEST(CanvasState, gettersAndSetters) { 49 CanvasState state(sNullClient); 50 state.initializeSaveStack(200, 200, 51 0, 0, 200, 200, Vector3()); 52 53 ASSERT_EQ(state.getWidth(), 200); 54 ASSERT_EQ(state.getHeight(), 200); 55 56 Matrix4 simpleTranslate; 57 simpleTranslate.loadTranslate(10, 20, 0); 58 state.setMatrix(simpleTranslate); 59 60 ASSERT_EQ(state.getRenderTargetClipBounds(), Rect(200, 200)); 61 ASSERT_EQ(state.getLocalClipBounds(), Rect(-10, -20, 190, 180)); 62 EXPECT_TRUE(approxEqual(*state.currentTransform(), simpleTranslate)); 63 EXPECT_TRUE(state.clipIsSimple()); 64 } 65 66 TEST(CanvasState, simpleClipping) { 67 CanvasState state(sNullClient); 68 state.initializeSaveStack(200, 200, 69 0, 0, 200, 200, Vector3()); 70 71 state.clipRect(0, 0, 100, 100, SkRegion::kIntersect_Op); 72 ASSERT_EQ(state.getRenderTargetClipBounds(), Rect(100, 100)); 73 74 state.clipRect(10, 10, 200, 200, SkRegion::kIntersect_Op); 75 ASSERT_EQ(state.getRenderTargetClipBounds(), Rect(10, 10, 100, 100)); 76 77 state.clipRect(50, 50, 150, 150, SkRegion::kReplace_Op); 78 ASSERT_EQ(state.getRenderTargetClipBounds(), Rect(50, 50, 150, 150)); 79 } 80 81 TEST(CanvasState, complexClipping) { 82 CanvasState state(sNullClient); 83 state.initializeSaveStack(200, 200, 84 0, 0, 200, 200, Vector3()); 85 86 state.save(SaveFlags::MatrixClip); 87 { 88 // rotated clip causes complex clip 89 state.rotate(10); 90 EXPECT_TRUE(state.clipIsSimple()); 91 state.clipRect(0, 0, 200, 200, SkRegion::kIntersect_Op); 92 EXPECT_FALSE(state.clipIsSimple()); 93 } 94 state.restore(); 95 96 state.save(SaveFlags::MatrixClip); 97 { 98 // subtracted clip causes complex clip 99 EXPECT_TRUE(state.clipIsSimple()); 100 state.clipRect(50, 50, 150, 150, SkRegion::kDifference_Op); 101 EXPECT_FALSE(state.clipIsSimple()); 102 } 103 state.restore(); 104 105 state.save(SaveFlags::MatrixClip); 106 { 107 // complex path causes complex clip 108 SkPath path; 109 path.addOval(SkRect::MakeWH(200, 200)); 110 EXPECT_TRUE(state.clipIsSimple()); 111 state.clipPath(&path, SkRegion::kDifference_Op); 112 EXPECT_FALSE(state.clipIsSimple()); 113 } 114 state.restore(); 115 } 116 117 TEST(CanvasState, saveAndRestore) { 118 CanvasState state(sNullClient); 119 state.initializeSaveStack(200, 200, 120 0, 0, 200, 200, Vector3()); 121 122 state.save(SaveFlags::Clip); 123 { 124 state.clipRect(0, 0, 10, 10, SkRegion::kIntersect_Op); 125 ASSERT_EQ(state.getRenderTargetClipBounds(), Rect(10, 10)); 126 } 127 state.restore(); 128 ASSERT_EQ(state.getRenderTargetClipBounds(), Rect(200, 200)); // verify restore 129 130 Matrix4 simpleTranslate; 131 simpleTranslate.loadTranslate(10, 10, 0); 132 state.save(SaveFlags::Matrix); 133 { 134 state.translate(10, 10, 0); 135 EXPECT_TRUE(approxEqual(*state.currentTransform(), simpleTranslate)); 136 } 137 state.restore(); 138 EXPECT_FALSE(approxEqual(*state.currentTransform(), simpleTranslate)); 139 } 140 141 TEST(CanvasState, saveAndRestoreButNotTooMuch) { 142 CanvasState state(sNullClient); 143 state.initializeSaveStack(200, 200, 144 0, 0, 200, 200, Vector3()); 145 146 state.save(SaveFlags::Matrix); // NOTE: clip not saved 147 { 148 state.clipRect(0, 0, 10, 10, SkRegion::kIntersect_Op); 149 ASSERT_EQ(state.getRenderTargetClipBounds(), Rect(10, 10)); 150 } 151 state.restore(); 152 ASSERT_EQ(state.getRenderTargetClipBounds(), Rect(10, 10)); // verify not restored 153 154 Matrix4 simpleTranslate; 155 simpleTranslate.loadTranslate(10, 10, 0); 156 state.save(SaveFlags::Clip); // NOTE: matrix not saved 157 { 158 state.translate(10, 10, 0); 159 EXPECT_TRUE(approxEqual(*state.currentTransform(), simpleTranslate)); 160 } 161 state.restore(); 162 EXPECT_TRUE(approxEqual(*state.currentTransform(), simpleTranslate)); // verify not restored 163 } 164 165 } 166 } 167
