| // Copyright 2013 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "ui/views/rect_based_targeting_utils.h" |
| |
| #include "testing/gtest/include/gtest/gtest.h" |
| #include "ui/gfx/geometry/rect.h" |
| |
| namespace views { |
| |
| TEST(RectBasedTargetingUtils, UsePointBasedTargeting) { |
| gfx::Rect rect_1(gfx::Point(-22, 30), gfx::Size(1, 1)); |
| gfx::Rect rect_2(gfx::Point(0, 0), gfx::Size(34, 55)); |
| gfx::Rect rect_3(gfx::Point(12, 12), gfx::Size(1, 0)); |
| gfx::Rect rect_4(gfx::Point(12, 120), gfx::Size(0, 0)); |
| |
| EXPECT_TRUE(UsePointBasedTargeting(rect_1)); |
| EXPECT_FALSE(UsePointBasedTargeting(rect_2)); |
| EXPECT_FALSE(UsePointBasedTargeting(rect_3)); |
| EXPECT_FALSE(UsePointBasedTargeting(rect_4)); |
| } |
| |
| TEST(RectBasedTargetingUtils, PercentCoveredBy) { |
| gfx::Rect rect_1(gfx::Point(0, 0), gfx::Size(300, 120)); |
| gfx::Rect rect_2(gfx::Point(20, 10), gfx::Size(30, 90)); |
| gfx::Rect rect_3(gfx::Point(160, 50), gfx::Size(150, 85)); |
| gfx::Rect rect_4(gfx::Point(20, 55), gfx::Size(0, 15)); |
| float error = 0.001f; |
| |
| // Passing in identical rectangles. |
| EXPECT_FLOAT_EQ(1.0f, PercentCoveredBy(rect_1, rect_1)); |
| |
| // |rect_1| completely contains |rect_2|. |
| EXPECT_FLOAT_EQ(0.075f, PercentCoveredBy(rect_1, rect_2)); |
| EXPECT_FLOAT_EQ(1.0f, PercentCoveredBy(rect_2, rect_1)); |
| |
| // |rect_2| and |rect_3| do not intersect. |
| EXPECT_FLOAT_EQ(0.0f, PercentCoveredBy(rect_2, rect_3)); |
| |
| // |rect_1| and |rect_3| have a nonzero area of intersection which |
| // is smaller than the area of either rectangle. |
| EXPECT_NEAR(0.272f, PercentCoveredBy(rect_1, rect_3), error); |
| EXPECT_NEAR(0.768f, PercentCoveredBy(rect_3, rect_1), error); |
| |
| // |rect_4| has no area. |
| EXPECT_FLOAT_EQ(0.0f, PercentCoveredBy(rect_2, rect_4)); |
| EXPECT_FLOAT_EQ(0.0f, PercentCoveredBy(rect_4, rect_2)); |
| } |
| |
| TEST(RectBasedTargetingUtils, DistanceSquaredFromCenterToPoint) { |
| gfx::Rect rect_1(gfx::Point(0, 0), gfx::Size(10, 10)); |
| gfx::Rect rect_2(gfx::Point(20, 0), gfx::Size(80, 10)); |
| gfx::Rect rect_3(gfx::Point(0, 20), gfx::Size(10, 20)); |
| |
| gfx::Point point_1(5, 5); |
| gfx::Point point_2(25, 5); |
| gfx::Point point_3(11, 15); |
| gfx::Point point_4(33, 44); |
| |
| EXPECT_EQ(0, DistanceSquaredFromCenterToPoint(point_1, rect_1)); |
| EXPECT_EQ(1225, DistanceSquaredFromCenterToPoint(point_2, rect_2)); |
| EXPECT_EQ(3025, DistanceSquaredFromCenterToPoint(point_1, rect_2)); |
| EXPECT_EQ(1025, DistanceSquaredFromCenterToPoint(point_2, rect_3)); |
| EXPECT_EQ(2501, DistanceSquaredFromCenterToPoint(point_3, rect_2)); |
| EXPECT_EQ(136, DistanceSquaredFromCenterToPoint(point_3, rect_1)); |
| EXPECT_EQ(980, DistanceSquaredFromCenterToPoint(point_4, rect_3)); |
| } |
| |
| } // namespace views |