Use nine-patch resource for drawing Aura overlay scrollbar thumb.

cc/quads/nine_patch_generator_unittest.cc

+// 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 "cc/quads/nine_patch_generator.h"
+
+#include "testing/gtest/include/gtest/gtest.h"
+#include "ui/gfx/geometry/rect.h"
+#include "ui/gfx/geometry/size.h"
+
+namespace cc {
+namespace {
+
+TEST(NinePatchGeneratorTest, SetLayoutReturnsChanged) {
+  NinePatchGenerator quad_generator;
+
+  EXPECT_TRUE(quad_generator.SetLayout(
+      gfx::Size(10, 10), gfx::Size(10, 10), gfx::Rect(1, 1, 8, 8),
+      gfx::Rect(1, 1, 2, 2), gfx::Rect(), true));
+
+  EXPECT_FALSE(quad_generator.SetLayout(
+      gfx::Size(10, 10), gfx::Size(10, 10), gfx::Rect(1, 1, 8, 8),
+      gfx::Rect(1, 1, 2, 2), gfx::Rect(), true));
+
+  EXPECT_TRUE(quad_generator.SetLayout(
+      gfx::Size(10, 10), gfx::Size(10, 10), gfx::Rect(1, 1, 8, 8),
+      gfx::Rect(1, 1, 2, 2), gfx::Rect(), false));
+
+  EXPECT_FALSE(quad_generator.SetLayout(
+      gfx::Size(10, 10), gfx::Size(10, 10), gfx::Rect(1, 1, 8, 8),
+      gfx::Rect(1, 1, 2, 2), gfx::Rect(), false));
+
+  EXPECT_TRUE(quad_generator.SetLayout(
+      gfx::Size(12, 10), gfx::Size(10, 10), gfx::Rect(1, 1, 8, 8),
+      gfx::Rect(1, 1, 2, 2), gfx::Rect(), false));
+}
+
+TEST(NinePatchGeneratorTest, BasicGenerate) {
+  NinePatchGenerator quad_generator;
+
+  quad_generator.SetLayout(gfx::Size(10, 10), gfx::Size(10, 10),
+                           gfx::Rect(1, 1, 8, 8), gfx::Rect(1, 1, 2, 2),
+                           gfx::Rect(), true);
+
+  std::vector<NinePatchGenerator::Patch> patches =
+      quad_generator.GeneratePatches();
+
+  ASSERT_EQ(9u, patches.size());
+
+  // Center.
+  EXPECT_EQ(gfx::RectF(1, 1, 8, 8), patches[8].image_rect);
+  EXPECT_EQ(gfx::RectF(1, 1, 8, 8), patches[8].output_rect);
+  EXPECT_EQ(gfx::RectF(0.1, 0.1, 0.8, 0.8), patches[8].normalized_image_rect);

[aelias_OOO_until_Jul13, 2017/02/28 23:23:51]

According to trybot, this doesn't compile on Windows:
"e:\b\c\b\win\src\cc\quads\nine_patch_generator_unittest.cc(53): warning C4305:
'argument': truncation from 'double' to 'float'"

[bokan, 2017/03/01 00:44:21]

Fixed

+
+  // Bottom.
+  EXPECT_EQ(gfx::RectF(1, 9, 8, 1), patches[7].image_rect);
+  EXPECT_EQ(gfx::RectF(1, 9, 8, 1), patches[7].output_rect);
+  EXPECT_EQ(gfx::RectF(0.1, 0.9, 0.8, 0.1), patches[7].normalized_image_rect);
+
+  // Right.
+  EXPECT_EQ(gfx::RectF(9, 1, 1, 8), patches[6].image_rect);
+  EXPECT_EQ(gfx::RectF(9, 1, 1, 8), patches[6].output_rect);
+  EXPECT_EQ(gfx::RectF(0.9, 0.1, 0.1, 0.8), patches[6].normalized_image_rect);
+
+  // Left.
+  EXPECT_EQ(gfx::RectF(0, 1, 1, 8), patches[5].image_rect);
+  EXPECT_EQ(gfx::RectF(0, 1, 1, 8), patches[5].output_rect);
+  EXPECT_EQ(gfx::RectF(0, 0.1, 0.1, 0.8), patches[5].normalized_image_rect);
+
+  // Top.
+  EXPECT_EQ(gfx::RectF(1, 0, 8, 1), patches[4].image_rect);
+  EXPECT_EQ(gfx::RectF(1, 0, 8, 1), patches[4].output_rect);
+  EXPECT_EQ(gfx::RectF(0.1, 0, 0.8, 0.1), patches[4].normalized_image_rect);
+
+  // Bottom-right
+  EXPECT_EQ(gfx::RectF(9, 9, 1, 1), patches[3].image_rect);
+  EXPECT_EQ(gfx::RectF(9, 9, 1, 1), patches[3].output_rect);
+  EXPECT_EQ(gfx::RectF(0.9, 0.9, 0.1, 0.1), patches[3].normalized_image_rect);
+
+  // Bottom-left
+  EXPECT_EQ(gfx::RectF(0, 9, 1, 1), patches[2].image_rect);
+  EXPECT_EQ(gfx::RectF(0, 9, 1, 1), patches[2].output_rect);
+  EXPECT_EQ(gfx::RectF(0, 0.9, 0.1, 0.1), patches[2].normalized_image_rect);
+
+  // Top-right
+  EXPECT_EQ(gfx::RectF(9, 0, 1, 1), patches[1].image_rect);
+  EXPECT_EQ(gfx::RectF(9, 0, 1, 1), patches[1].output_rect);
+  EXPECT_EQ(gfx::RectF(0.9, 0, 0.1, 0.1), patches[1].normalized_image_rect);
+
+  // Top-left
+  EXPECT_EQ(gfx::RectF(0, 0, 1, 1), patches[0].image_rect);
+  EXPECT_EQ(gfx::RectF(0, 0, 1, 1), patches[0].output_rect);
+  EXPECT_EQ(gfx::RectF(0.0, 0, 0.1, 0.1), patches[0].normalized_image_rect);
+}
+
+TEST(NinePatchGeneratorTest, GenerateNonSymmetricAperture) {
+  NinePatchGenerator quad_generator;
+
+  quad_generator.SetLayout(gfx::Size(10, 10), gfx::Size(10, 10),
+                           gfx::Rect(3, 5, 2, 2), gfx::Rect(2, 4, 4, 8),
+                           gfx::Rect(), true);
+
+  std::vector<NinePatchGenerator::Patch> patches =
+      quad_generator.GeneratePatches();
+
+  ASSERT_EQ(9u, patches.size());
+
+  // Center.
+  EXPECT_EQ(gfx::RectF(3, 5, 2, 2), patches[8].image_rect);
+  EXPECT_EQ(gfx::RectF(2, 4, 6, 2), patches[8].output_rect);
+  EXPECT_EQ(gfx::RectF(0.3, 0.5, 0.2, 0.2), patches[8].normalized_image_rect);
+
+  // Bottom.
+  EXPECT_EQ(gfx::RectF(3, 7, 2, 3), patches[7].image_rect);
+  EXPECT_EQ(gfx::RectF(2, 6, 6, 4), patches[7].output_rect);
+  EXPECT_EQ(gfx::RectF(0.3, 0.7, 0.2, 0.3), patches[7].normalized_image_rect);
+
+  // Right.
+  EXPECT_EQ(gfx::RectF(5, 5, 5, 2), patches[6].image_rect);
+  EXPECT_EQ(gfx::RectF(8, 4, 2, 2), patches[6].output_rect);
+  EXPECT_EQ(gfx::RectF(0.5, 0.5, 0.5, 0.2), patches[6].normalized_image_rect);
+
+  // Left.
+  EXPECT_EQ(gfx::RectF(0, 5, 3, 2), patches[5].image_rect);
+  EXPECT_EQ(gfx::RectF(0, 4, 2, 2), patches[5].output_rect);
+  EXPECT_EQ(gfx::RectF(0, 0.5, 0.3, 0.2), patches[5].normalized_image_rect);
+
+  // Top.
+  EXPECT_EQ(gfx::RectF(3, 0, 2, 5), patches[4].image_rect);
+  EXPECT_EQ(gfx::RectF(2, 0, 6, 4), patches[4].output_rect);
+  EXPECT_EQ(gfx::RectF(0.3, 0, 0.2, 0.5), patches[4].normalized_image_rect);
+
+  // Bottom-right
+  EXPECT_EQ(gfx::RectF(5, 7, 5, 3), patches[3].image_rect);
+  EXPECT_EQ(gfx::RectF(8, 6, 2, 4), patches[3].output_rect);
+  EXPECT_EQ(gfx::RectF(0.5, 0.7, 0.5, 0.3), patches[3].normalized_image_rect);
+
+  // Bottom-left
+  EXPECT_EQ(gfx::RectF(0, 7, 3, 3), patches[2].image_rect);
+  EXPECT_EQ(gfx::RectF(0, 6, 2, 4), patches[2].output_rect);
+  EXPECT_EQ(gfx::RectF(0, 0.7, 0.3, 0.3), patches[2].normalized_image_rect);
+
+  // Top-right
+  EXPECT_EQ(gfx::RectF(5, 0, 5, 5), patches[1].image_rect);
+  EXPECT_EQ(gfx::RectF(8, 0, 2, 4), patches[1].output_rect);
+  EXPECT_EQ(gfx::RectF(0.5, 0, 0.5, 0.5), patches[1].normalized_image_rect);
+
+  // Top-left
+  EXPECT_EQ(gfx::RectF(0, 0, 3, 5), patches[0].image_rect);
+  EXPECT_EQ(gfx::RectF(0, 0, 2, 4), patches[0].output_rect);
+  EXPECT_EQ(gfx::RectF(0, 0, 0.3, 0.5), patches[0].normalized_image_rect);
+}
+
+TEST(NinePatchGeneratorTest, LargerLayerGenerate) {
+  NinePatchGenerator quad_generator;
+
+  quad_generator.SetLayout(gfx::Size(10, 10), gfx::Size(20, 15),
+                           gfx::Rect(1, 1, 8, 8), gfx::Rect(1, 1, 2, 2),
+                           gfx::Rect(), true);
+
+  std::vector<NinePatchGenerator::Patch> patches =
+      quad_generator.GeneratePatches();
+
+  ASSERT_EQ(9u, patches.size());
+
+  // Center.
+  EXPECT_EQ(gfx::RectF(1, 1, 8, 8), patches[8].image_rect);
+  EXPECT_EQ(gfx::RectF(1, 1, 18, 13), patches[8].output_rect);
+  EXPECT_EQ(gfx::RectF(0.1, 0.1, 0.8, 0.8), patches[8].normalized_image_rect);
+
+  // Bottom.
+  EXPECT_EQ(gfx::RectF(1, 9, 8, 1), patches[7].image_rect);
+  EXPECT_EQ(gfx::RectF(1, 14, 18, 1), patches[7].output_rect);
+  EXPECT_EQ(gfx::RectF(0.1, 0.9, 0.8, 0.1), patches[7].normalized_image_rect);
+
+  // Right.
+  EXPECT_EQ(gfx::RectF(9, 1, 1, 8), patches[6].image_rect);
+  EXPECT_EQ(gfx::RectF(19, 1, 1, 13), patches[6].output_rect);
+  EXPECT_EQ(gfx::RectF(0.9, 0.1, 0.1, 0.8), patches[6].normalized_image_rect);
+
+  // Left.
+  EXPECT_EQ(gfx::RectF(0, 1, 1, 8), patches[5].image_rect);
+  EXPECT_EQ(gfx::RectF(0, 1, 1, 13), patches[5].output_rect);
+  EXPECT_EQ(gfx::RectF(0, 0.1, 0.1, 0.8), patches[5].normalized_image_rect);
+
+  // Top.
+  EXPECT_EQ(gfx::RectF(1, 0, 8, 1), patches[4].image_rect);
+  EXPECT_EQ(gfx::RectF(1, 0, 18, 1), patches[4].output_rect);
+  EXPECT_EQ(gfx::RectF(0.1, 0, 0.8, 0.1), patches[4].normalized_image_rect);
+
+  // Bottom-right
+  EXPECT_EQ(gfx::RectF(9, 9, 1, 1), patches[3].image_rect);
+  EXPECT_EQ(gfx::RectF(19, 14, 1, 1), patches[3].output_rect);
+  EXPECT_EQ(gfx::RectF(0.9, 0.9, 0.1, 0.1), patches[3].normalized_image_rect);
+
+  // Bottom-left
+  EXPECT_EQ(gfx::RectF(0, 9, 1, 1), patches[2].image_rect);
+  EXPECT_EQ(gfx::RectF(0, 14, 1, 1), patches[2].output_rect);
+  EXPECT_EQ(gfx::RectF(0, 0.9, 0.1, 0.1), patches[2].normalized_image_rect);
+
+  // Top-right
+  EXPECT_EQ(gfx::RectF(9, 0, 1, 1), patches[1].image_rect);
+  EXPECT_EQ(gfx::RectF(19, 0, 1, 1), patches[1].output_rect);
+  EXPECT_EQ(gfx::RectF(0.9, 0, 0.1, 0.1), patches[1].normalized_image_rect);
+
+  // Top-left
+  EXPECT_EQ(gfx::RectF(0, 0, 1, 1), patches[0].image_rect);
+  EXPECT_EQ(gfx::RectF(0, 0, 1, 1), patches[0].output_rect);
+  EXPECT_EQ(gfx::RectF(0.0, 0, 0.1, 0.1), patches[0].normalized_image_rect);
+}
+
+}  // namespace
+}  // namespace cc