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| 1 // Copyright 2013 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 "ui/views/rect_based_targeting_utils.h" | |
| 6 | |
| 7 #include "testing/gtest/include/gtest/gtest.h" | |
| 8 #include "ui/gfx/rect.h" | |
| 9 | |
| 10 namespace views { | |
| 11 | |
| 12 TEST(RectBasedTargetingUtils, UsePointBasedTargeting) { | |
| 13 gfx::Rect rect_1(gfx::Point(-22, 30), gfx::Size(1, 1)); | |
| 14 gfx::Rect rect_2(gfx::Point(0, 0), gfx::Size(34, 55)); | |
| 15 gfx::Rect rect_3(gfx::Point(12, 12), gfx::Size(1, 0)); | |
| 16 gfx::Rect rect_4(gfx::Point(12, 120), gfx::Size(0, 0)); | |
| 17 | |
| 18 EXPECT_TRUE(UsePointBasedTargeting(rect_1)); | |
| 19 EXPECT_FALSE(UsePointBasedTargeting(rect_2)); | |
| 20 EXPECT_FALSE(UsePointBasedTargeting(rect_3)); | |
| 21 EXPECT_FALSE(UsePointBasedTargeting(rect_4)); | |
| 22 } | |
| 23 | |
| 24 TEST(RectBasedTargetingUtils, PercentCoveredBy) { | |
| 25 gfx::Rect rect_1(gfx::Point(0, 0), gfx::Size(300, 120)); | |
| 26 gfx::Rect rect_2(gfx::Point(20, 10), gfx::Size(30, 90)); | |
| 27 gfx::Rect rect_3(gfx::Point(160, 50), gfx::Size(150, 85)); | |
| 28 gfx::Rect rect_4(gfx::Point(20, 55), gfx::Size(0, 15)); | |
| 29 float error = 0.001f; | |
| 30 | |
| 31 // Passing in identical rectangles. | |
| 32 EXPECT_FLOAT_EQ(1.0f, PercentCoveredBy(rect_1, rect_1)); | |
| 33 | |
| 34 // |rect_1| completely contains |rect_2|. | |
| 35 EXPECT_FLOAT_EQ(0.075f, PercentCoveredBy(rect_1, rect_2)); | |
| 36 EXPECT_FLOAT_EQ(1.0f, PercentCoveredBy(rect_2, rect_1)); | |
| 37 | |
| 38 // |rect_2| and |rect_3| do not intersect. | |
| 39 EXPECT_FLOAT_EQ(0.0f, PercentCoveredBy(rect_2, rect_3)); | |
| 40 | |
| 41 // |rect_1| and |rect_3| have a nonzero area of intersection which | |
| 42 // is smaller than the area of either rectangle. | |
| 43 EXPECT_NEAR(0.272f, PercentCoveredBy(rect_1, rect_3), error); | |
| 44 EXPECT_NEAR(0.768f, PercentCoveredBy(rect_3, rect_1), error); | |
| 45 | |
| 46 // |rect_4| has no area. | |
| 47 EXPECT_FLOAT_EQ(0.0f, PercentCoveredBy(rect_2, rect_4)); | |
| 48 EXPECT_FLOAT_EQ(0.0f, PercentCoveredBy(rect_4, rect_2)); | |
| 49 } | |
| 50 | |
| 51 TEST(RectBasedTargetingUtils, DistanceSquaredFromCenterToPoint) { | |
| 52 gfx::Rect rect_1(gfx::Point(0, 0), gfx::Size(10, 10)); | |
| 53 gfx::Rect rect_2(gfx::Point(20, 0), gfx::Size(80, 10)); | |
| 54 gfx::Rect rect_3(gfx::Point(0, 20), gfx::Size(10, 20)); | |
| 55 | |
| 56 gfx::Point point_1(5, 5); | |
| 57 gfx::Point point_2(25, 5); | |
| 58 gfx::Point point_3(11, 15); | |
| 59 gfx::Point point_4(33, 44); | |
| 60 | |
| 61 EXPECT_EQ(0, DistanceSquaredFromCenterToPoint(point_1, rect_1)); | |
| 62 EXPECT_EQ(1225, DistanceSquaredFromCenterToPoint(point_2, rect_2)); | |
| 63 EXPECT_EQ(3025, DistanceSquaredFromCenterToPoint(point_1, rect_2)); | |
| 64 EXPECT_EQ(1025, DistanceSquaredFromCenterToPoint(point_2, rect_3)); | |
| 65 EXPECT_EQ(2501, DistanceSquaredFromCenterToPoint(point_3, rect_2)); | |
| 66 EXPECT_EQ(136, DistanceSquaredFromCenterToPoint(point_3, rect_1)); | |
| 67 EXPECT_EQ(980, DistanceSquaredFromCenterToPoint(point_4, rect_3)); | |
| 68 } | |
| 69 | |
| 70 } // namespace views | |
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