| // Copyright 2017 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/gfx/geometry/axis_transform2d.h" |
| |
| #include "testing/gtest/include/gtest/gtest.h" |
| #include "ui/gfx/test/gfx_util.h" |
| |
| namespace gfx { |
| namespace { |
| |
| TEST(AxisTransform2dTest, Mapping) { |
| AxisTransform2d t(1.25f, Vector2dF(3.75f, 55.f)); |
| |
| PointF p(150.f, 100.f); |
| EXPECT_EQ(PointF(191.25f, 180.f), t.MapPoint(p)); |
| EXPECT_POINTF_EQ(PointF(117.f, 36.f), t.InverseMapPoint(p)); |
| |
| RectF r(150.f, 100.f, 22.5f, 37.5f); |
| EXPECT_EQ(RectF(191.25f, 180.f, 28.125f, 46.875f), t.MapRect(r)); |
| EXPECT_RECTF_EQ(RectF(117.f, 36.f, 18.f, 30.f), t.InverseMapRect(r)); |
| } |
| |
| TEST(AxisTransform2dTest, Scaling) { |
| { |
| AxisTransform2d t(1.25f, Vector2dF(3.75f, 55.f)); |
| EXPECT_EQ(AxisTransform2d(1.5625f, Vector2dF(3.75f, 55.f)), |
| PreScaleAxisTransform2d(t, 1.25)); |
| t.PreScale(1.25); |
| EXPECT_EQ(AxisTransform2d(1.5625f, Vector2dF(3.75f, 55.f)), t); |
| } |
| |
| { |
| AxisTransform2d t(1.25f, Vector2dF(3.75f, 55.f)); |
| EXPECT_EQ(AxisTransform2d(1.5625f, Vector2dF(4.6875f, 68.75f)), |
| PostScaleAxisTransform2d(t, 1.25)); |
| t.PostScale(1.25); |
| EXPECT_EQ(AxisTransform2d(1.5625f, Vector2dF(4.6875f, 68.75f)), t); |
| } |
| } |
| |
| TEST(AxisTransform2dTest, Translating) { |
| Vector2dF tr(3.f, -5.f); |
| { |
| AxisTransform2d t(1.25f, Vector2dF(3.75f, 55.f)); |
| EXPECT_EQ(AxisTransform2d(1.25f, Vector2dF(7.5f, 48.75f)), |
| PreTranslateAxisTransform2d(t, tr)); |
| t.PreTranslate(tr); |
| EXPECT_EQ(AxisTransform2d(1.25f, Vector2dF(7.5f, 48.75f)), t); |
| } |
| |
| { |
| AxisTransform2d t(1.25f, Vector2dF(3.75f, 55.f)); |
| EXPECT_EQ(AxisTransform2d(1.25f, Vector2dF(6.75f, 50.f)), |
| PostTranslateAxisTransform2d(t, tr)); |
| t.PostTranslate(tr); |
| EXPECT_EQ(AxisTransform2d(1.25f, Vector2dF(6.75f, 50.f)), t); |
| } |
| } |
| |
| TEST(AxisTransform2dTest, Concat) { |
| AxisTransform2d pre(1.25f, Vector2dF(3.75f, 55.f)); |
| AxisTransform2d post(0.5f, Vector2dF(10.f, 5.f)); |
| AxisTransform2d expectation(0.625f, Vector2dF(11.875f, 32.5f)); |
| EXPECT_EQ(expectation, ConcatAxisTransform2d(post, pre)); |
| |
| AxisTransform2d post_concat = pre; |
| post_concat.PostConcat(post); |
| EXPECT_EQ(expectation, post_concat); |
| |
| AxisTransform2d pre_concat = post; |
| pre_concat.PreConcat(pre); |
| EXPECT_EQ(expectation, pre_concat); |
| } |
| |
| TEST(AxisTransform2dTest, Inverse) { |
| AxisTransform2d t(1.25f, Vector2dF(3.75f, 55.f)); |
| AxisTransform2d inv_inplace = t; |
| inv_inplace.Invert(); |
| AxisTransform2d inv_out_of_place = InvertAxisTransform2d(t); |
| |
| EXPECT_AXIS_TRANSFORM2D_EQ(inv_inplace, inv_out_of_place); |
| EXPECT_AXIS_TRANSFORM2D_EQ(AxisTransform2d(), |
| ConcatAxisTransform2d(t, inv_inplace)); |
| EXPECT_AXIS_TRANSFORM2D_EQ(AxisTransform2d(), |
| ConcatAxisTransform2d(inv_inplace, t)); |
| } |
| |
| } // namespace |
| } // namespace gfx |