ui: Add methods to clamp Sizes, Points, and Vectors from above or below.

ui/gfx/vector2d_unittest.cc

 // Copyright (c) 2012 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 "base/basictypes.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/gfx/vector2d.h"
 #include "ui/gfx/vector2d_f.h"
 
 #include <cmath>
@@ skipping 165 matching lines @@
     double v1 = float_values[i][1];
     double length_squared =
         static_cast<double>(v0) * v0 + static_cast<double>(v1) * v1;
     double length = std::sqrt(length_squared);
     Vector2dF vector(v0, v1);
     EXPECT_EQ(length_squared, vector.LengthSquared());
     EXPECT_EQ(static_cast<float>(length), vector.Length());
   }
 }
 
+TEST(Vector2dTest, ClampVector2d) {
+  Vector2d a;
+
+  a = Vector2d(3, 5);
+  EXPECT_EQ(Vector2d(3, 5).ToString(), a.ToString());
+  a.ClampToMin(Vector2d(2, 4));
+  EXPECT_EQ(Vector2d(3, 5).ToString(), a.ToString());
+  a.ClampToMin(Vector2d(3, 5));
+  EXPECT_EQ(Vector2d(3, 5).ToString(), a.ToString());
+  a.ClampToMin(Vector2d(4, 2));
+  EXPECT_EQ(Vector2d(4, 5).ToString(), a.ToString());
+  a.ClampToMin(Vector2d(8, 10));
+  EXPECT_EQ(Vector2d(8, 10).ToString(), a.ToString());
+
+  a.ClampToMax(Vector2d(9, 11));
+  EXPECT_EQ(Vector2d(8, 10).ToString(), a.ToString());
+  a.ClampToMax(Vector2d(8, 10));
+  EXPECT_EQ(Vector2d(8, 10).ToString(), a.ToString());
+  a.ClampToMax(Vector2d(11, 9));
+  EXPECT_EQ(Vector2d(8, 9).ToString(), a.ToString());
+  a.ClampToMax(Vector2d(7, 11));
+  EXPECT_EQ(Vector2d(7, 9).ToString(), a.ToString());
+  a.ClampToMax(Vector2d(3, 5));
+  EXPECT_EQ(Vector2d(3, 5).ToString(), a.ToString());
+}
+
+TEST(Vector2dTest, ClampVector2dF) {
+  Vector2dF a;
+
+  a = Vector2dF(3.5f, 5.5f);
+  EXPECT_EQ(Vector2dF(3.5f, 5.5f).ToString(), a.ToString());
+  a.ClampToMin(Vector2dF(2.5f, 4.5f));
+  EXPECT_EQ(Vector2dF(3.5f, 5.5f).ToString(), a.ToString());
+  a.ClampToMin(Vector2dF(3.5f, 5.5f));
+  EXPECT_EQ(Vector2dF(3.5f, 5.5f).ToString(), a.ToString());
+  a.ClampToMin(Vector2dF(4.5f, 2.5f));
+  EXPECT_EQ(Vector2dF(4.5f, 5.5f).ToString(), a.ToString());
+  a.ClampToMin(Vector2dF(8.5f, 10.5f));
+  EXPECT_EQ(Vector2dF(8.5f, 10.5f).ToString(), a.ToString());
+
+  a.ClampToMax(Vector2dF(9.5f, 11.5f));
+  EXPECT_EQ(Vector2dF(8.5f, 10.5f).ToString(), a.ToString());
+  a.ClampToMax(Vector2dF(8.5f, 10.5f));
+  EXPECT_EQ(Vector2dF(8.5f, 10.5f).ToString(), a.ToString());
+  a.ClampToMax(Vector2dF(11.5f, 9.5f));
+  EXPECT_EQ(Vector2dF(8.5f, 9.5f).ToString(), a.ToString());
+  a.ClampToMax(Vector2dF(7.5f, 11.5f));
+  EXPECT_EQ(Vector2dF(7.5f, 9.5f).ToString(), a.ToString());
+  a.ClampToMax(Vector2dF(3.5f, 5.5f));
+  EXPECT_EQ(Vector2dF(3.5f, 5.5f).ToString(), a.ToString());
+}
+
 }  // namespace gfx