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| 1 // Copyright 2014 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "base/time/time.h" | |
| 6 #include "testing/gtest/include/gtest/gtest.h" | |
| 7 #include "ui/gfx/android/scroller.h" | |
| 8 | |
| 9 namespace gfx { | |
| 10 | |
| 11 namespace { | |
| 12 | |
| 13 const float kDefaultStartX = 7.f; | |
| 14 const float kDefaultStartY = 25.f; | |
| 15 const float kDefaultDeltaX = -20.f; | |
| 16 const float kDefaultDeltaY = 73.f; | |
| 17 const float kDefaultVelocityX = -350.f; | |
| 18 const float kDefaultVelocityY = 220.f; | |
| 19 const float kEpsilon = 1e-3f; | |
| 20 | |
| 21 Scroller::Config DefaultConfig() { | |
| 22 return Scroller::Config(); | |
| 23 } | |
| 24 | |
| 25 } // namespace | |
| 26 | |
| 27 class ScrollerTest : public testing::Test {}; | |
| 28 | |
| 29 TEST_F(ScrollerTest, Scroll) { | |
| 30 Scroller scroller(DefaultConfig()); | |
| 31 base::TimeTicks start_time = base::TimeTicks::Now(); | |
| 32 | |
| 33 // Start a scroll and verify initialized values. | |
| 34 scroller.StartScroll(kDefaultStartX, | |
| 35 kDefaultStartY, | |
| 36 kDefaultDeltaX, | |
| 37 kDefaultDeltaY, | |
| 38 start_time); | |
| 39 | |
| 40 EXPECT_EQ(kDefaultStartX, scroller.GetStartX()); | |
| 41 EXPECT_EQ(kDefaultStartY, scroller.GetStartY()); | |
| 42 EXPECT_EQ(kDefaultStartX, scroller.GetCurrX()); | |
| 43 EXPECT_EQ(kDefaultStartY, scroller.GetCurrY()); | |
| 44 EXPECT_EQ(kDefaultStartX + kDefaultDeltaX, scroller.GetFinalX()); | |
| 45 EXPECT_EQ(kDefaultStartY + kDefaultDeltaY, scroller.GetFinalY()); | |
| 46 EXPECT_FALSE(scroller.IsFinished()); | |
| 47 EXPECT_EQ(base::TimeDelta(), scroller.GetTimePassed()); | |
| 48 | |
| 49 // Advance halfway through the scroll. | |
| 50 const base::TimeDelta scroll_duration = scroller.GetDuration(); | |
| 51 scroller.ComputeScrollOffset(start_time + scroll_duration / 2); | |
| 52 | |
| 53 // Ensure we've moved in the direction of the delta, but have yet to reach | |
| 54 // the target. | |
| 55 EXPECT_GT(kDefaultStartX, scroller.GetCurrX()); | |
| 56 EXPECT_LT(kDefaultStartY, scroller.GetCurrY()); | |
| 57 EXPECT_LT(scroller.GetFinalX(), scroller.GetCurrX()); | |
| 58 EXPECT_GT(scroller.GetFinalY(), scroller.GetCurrY()); | |
| 59 EXPECT_FALSE(scroller.IsFinished()); | |
| 60 | |
| 61 // Ensure our velocity is non-zero and in the same direction as the delta. | |
| 62 EXPECT_GT(0.f, scroller.GetCurrVelocityX() * kDefaultDeltaX); | |
| 63 EXPECT_GT(0.f, scroller.GetCurrVelocityY() * kDefaultDeltaY); | |
| 64 EXPECT_TRUE(scroller.IsScrollingInDirection(kDefaultDeltaX, kDefaultDeltaY)); | |
| 65 | |
| 66 // Repeated offset computations at the same timestamp should yield identical | |
| 67 // results. | |
| 68 float curr_x = scroller.GetCurrX(); | |
| 69 float curr_y = scroller.GetCurrY(); | |
| 70 float curr_velocity_x = scroller.GetCurrVelocityX(); | |
| 71 float curr_velocity_y = scroller.GetCurrVelocityY(); | |
| 72 scroller.ComputeScrollOffset(start_time + scroll_duration / 2); | |
| 73 EXPECT_EQ(curr_x, scroller.GetCurrX()); | |
| 74 EXPECT_EQ(curr_y, scroller.GetCurrY()); | |
| 75 EXPECT_EQ(curr_velocity_x, scroller.GetCurrVelocityX()); | |
| 76 EXPECT_EQ(curr_velocity_y, scroller.GetCurrVelocityY()); | |
| 77 | |
| 78 // Advance to the end. | |
| 79 scroller.ComputeScrollOffset(start_time + scroll_duration); | |
| 80 EXPECT_EQ(scroller.GetFinalX(), scroller.GetCurrX()); | |
| 81 EXPECT_EQ(scroller.GetFinalY(), scroller.GetCurrY()); | |
| 82 EXPECT_TRUE(scroller.IsFinished()); | |
| 83 EXPECT_EQ(scroll_duration, scroller.GetTimePassed()); | |
| 84 EXPECT_NEAR(0.f, scroller.GetCurrVelocityX(), kEpsilon); | |
| 85 EXPECT_NEAR(0.f, scroller.GetCurrVelocityY(), kEpsilon); | |
| 86 | |
| 87 // Try to advance further; nothing should change. | |
| 88 scroller.ComputeScrollOffset(start_time + scroll_duration * 2); | |
| 89 EXPECT_EQ(scroller.GetFinalX(), scroller.GetCurrX()); | |
| 90 EXPECT_EQ(scroller.GetFinalY(), scroller.GetCurrY()); | |
| 91 EXPECT_TRUE(scroller.IsFinished()); | |
| 92 EXPECT_EQ(scroll_duration, scroller.GetTimePassed()); | |
| 93 } | |
| 94 | |
| 95 TEST_F(ScrollerTest, Fling) { | |
| 96 Scroller scroller(DefaultConfig()); | |
| 97 base::TimeTicks start_time = base::TimeTicks::Now(); | |
| 98 | |
| 99 // Start a fling and verify initialized values. | |
| 100 scroller.Fling(kDefaultStartX, | |
| 101 kDefaultStartY, | |
| 102 kDefaultVelocityX, | |
| 103 kDefaultVelocityY, | |
| 104 INT_MIN, | |
| 105 INT_MAX, | |
| 106 INT_MIN, | |
| 107 INT_MAX, | |
| 108 start_time); | |
| 109 | |
| 110 EXPECT_EQ(kDefaultStartX, scroller.GetStartX()); | |
| 111 EXPECT_EQ(kDefaultStartY, scroller.GetStartY()); | |
| 112 EXPECT_EQ(kDefaultStartX, scroller.GetCurrX()); | |
| 113 EXPECT_EQ(kDefaultStartY, scroller.GetCurrY()); | |
| 114 EXPECT_GT(kDefaultStartX, scroller.GetFinalX()); | |
| 115 EXPECT_LT(kDefaultStartY, scroller.GetFinalY()); | |
| 116 EXPECT_FALSE(scroller.IsFinished()); | |
| 117 EXPECT_EQ(base::TimeDelta(), scroller.GetTimePassed()); | |
| 118 | |
| 119 // Advance halfway through the fling. | |
| 120 const base::TimeDelta scroll_duration = scroller.GetDuration(); | |
| 121 scroller.ComputeScrollOffset(start_time + scroll_duration / 2); | |
| 122 | |
| 123 // Ensure we've moved in the direction of the velocity, but have yet to reach | |
| 124 // the target. | |
| 125 EXPECT_GT(kDefaultStartX, scroller.GetCurrX()); | |
| 126 EXPECT_LT(kDefaultStartY, scroller.GetCurrY()); | |
| 127 EXPECT_LT(scroller.GetFinalX(), scroller.GetCurrX()); | |
| 128 EXPECT_GT(scroller.GetFinalY(), scroller.GetCurrY()); | |
| 129 EXPECT_FALSE(scroller.IsFinished()); | |
| 130 | |
| 131 // Ensure our velocity is non-zero and in the same direction as the original | |
| 132 // velocity. | |
| 133 EXPECT_LT(0.f, scroller.GetCurrVelocityX() * kDefaultVelocityX); | |
| 134 EXPECT_LT(0.f, scroller.GetCurrVelocityY() * kDefaultVelocityY); | |
| 135 EXPECT_TRUE( | |
| 136 scroller.IsScrollingInDirection(kDefaultVelocityX, kDefaultVelocityY)); | |
| 137 | |
| 138 // Repeated offset computations at the same timestamp should yield identical | |
| 139 // results. | |
| 140 float curr_x = scroller.GetCurrX(); | |
| 141 float curr_y = scroller.GetCurrY(); | |
| 142 float curr_velocity_x = scroller.GetCurrVelocityX(); | |
| 143 float curr_velocity_y = scroller.GetCurrVelocityY(); | |
| 144 scroller.ComputeScrollOffset(start_time + scroll_duration / 2); | |
| 145 EXPECT_EQ(curr_x, scroller.GetCurrX()); | |
| 146 EXPECT_EQ(curr_y, scroller.GetCurrY()); | |
| 147 EXPECT_EQ(curr_velocity_x, scroller.GetCurrVelocityX()); | |
| 148 EXPECT_EQ(curr_velocity_y, scroller.GetCurrVelocityY()); | |
| 149 | |
| 150 // Advance to the end. | |
| 151 scroller.ComputeScrollOffset(start_time + scroll_duration); | |
| 152 EXPECT_EQ(scroller.GetFinalX(), scroller.GetCurrX()); | |
| 153 EXPECT_EQ(scroller.GetFinalY(), scroller.GetCurrY()); | |
| 154 EXPECT_TRUE(scroller.IsFinished()); | |
| 155 EXPECT_EQ(scroll_duration, scroller.GetTimePassed()); | |
| 156 EXPECT_NEAR(0.f, scroller.GetCurrVelocityX(), kEpsilon); | |
| 157 EXPECT_NEAR(0.f, scroller.GetCurrVelocityY(), kEpsilon); | |
| 158 | |
| 159 // Try to advance further; nothing should change. | |
| 160 scroller.ComputeScrollOffset(start_time + scroll_duration * 2); | |
| 161 EXPECT_EQ(scroller.GetFinalX(), scroller.GetCurrX()); | |
| 162 EXPECT_EQ(scroller.GetFinalY(), scroller.GetCurrY()); | |
| 163 EXPECT_TRUE(scroller.IsFinished()); | |
| 164 EXPECT_EQ(scroll_duration, scroller.GetTimePassed()); | |
| 165 } | |
| 166 | |
| 167 } // namespace gfx | |
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Chromium Code Reviews
Issue 634373003:
Consolidate content fling implementations (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master