Add gfx::Transform::TransformBox and TransformBoxReverse

ui/gfx/transform_unittest.cc

 // Copyright (c) 2011 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.
 
 // MSVC++ requires this to be set before any other includes to get M_PI.
 #define _USE_MATH_DEFINES
 
 #include "ui/gfx/transform.h"
 
 #include <cmath>
 #include <ostream>
 #include <limits>
 
 #include "base/basictypes.h"
 #include "base/logging.h"
 #include "testing/gtest/include/gtest/gtest.h"
+#include "ui/gfx/box_f.h"
 #include "ui/gfx/point.h"
 #include "ui/gfx/point3_f.h"
 #include "ui/gfx/quad_f.h"
 #include "ui/gfx/transform_util.h"
 #include "ui/gfx/vector3d_f.h"
 
 namespace gfx {
 
 namespace {
 
@@ skipping 2480 matching lines @@
 TEST(XFormTest, To2dTranslation) {
   Vector2dF translation(3.f, 7.f);
   Transform transform;
   transform.Translate(translation.x(), translation.y() + 1);
   EXPECT_NE(translation.ToString(), transform.To2dTranslation().ToString());
   transform.MakeIdentity();
   transform.Translate(translation.x(), translation.y());
   EXPECT_EQ(translation.ToString(), transform.To2dTranslation().ToString());
 }
 
+TEST(XFormTest, TransformRect) {
+  Transform translation;
+  translation.Translate(3.f, 7.f);
+  RectF rect(1.f, 2.f, 3.f, 4.f);
+  RectF expected(4.f, 9.f, 3.f, 4.f);
+  translation.TransformRect(&rect);
+  EXPECT_EQ(expected.ToString(), rect.ToString());
+}
+
+TEST(XFormTest, TransformRectReverse) {
+  Transform translation;
+  translation.Translate(3.f, 7.f);
+  RectF rect(1.f, 2.f, 3.f, 4.f);
+  RectF expected(-2.f, -5.f, 3.f, 4.f);
+  EXPECT_TRUE(translation.TransformRectReverse(&rect));
+  EXPECT_EQ(expected.ToString(), rect.ToString());
+
+  Transform singular;
+  singular.Scale3d(0.f, 0.f, 0.f);
+  EXPECT_FALSE(singular.TransformRectReverse(&rect));
+}
+
+TEST(XFormTest, TransformBox) {
+  Transform translation;
+  translation.Translate3d(3.f, 7.f, 6.f);
+  BoxF box(1.f, 2.f, 3.f, 4.f, 5.f, 6.f);
+  BoxF expected(4.f, 9.f, 9.f, 4.f, 5.f, 6.f);
+  translation.TransformBox(&box);
+  EXPECT_EQ(expected.ToString(), box.ToString());
+}
+
+TEST(XFormTest, TransformBoxReverse) {
+  Transform translation;
+  translation.Translate3d(3.f, 7.f, 6.f);
+  BoxF box(1.f, 2.f, 3.f, 4.f, 5.f, 6.f);
+  BoxF expected(-2.f, -5.f, -3.f, 4.f, 5.f, 6.f);
+  EXPECT_TRUE(translation.TransformBoxReverse(&box));
+  EXPECT_EQ(expected.ToString(), box.ToString());
+
+  Transform singular;
+  singular.Scale3d(0.f, 0.f, 0.f);
+  EXPECT_FALSE(singular.TransformBoxReverse(&box));
+}
+
 }  // namespace
 
 }  // namespace gfx