rect_based_targeting_utils_unittest.cc 2.7 KB

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