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Diffstat (limited to 'ui/gfx/geometry/axis_transform2d_unittest.cc')
-rw-r--r-- | ui/gfx/geometry/axis_transform2d_unittest.cc | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/ui/gfx/geometry/axis_transform2d_unittest.cc b/ui/gfx/geometry/axis_transform2d_unittest.cc new file mode 100644 index 0000000000..b132c69635 --- /dev/null +++ b/ui/gfx/geometry/axis_transform2d_unittest.cc @@ -0,0 +1,91 @@ +// 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 |