[SyncFS] Build indexes from FileTracker entries on disk.
[chromium-blink-merge.git] / ui / gfx / platform_font_win_unittest.cc
blob08e5d0840a58965faeed4a2b43bbd7b1e1b858df
1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 #include "ui/gfx/platform_font_win.h"
7 #include "base/logging.h"
8 #include "base/memory/ref_counted.h"
9 #include "testing/gtest/include/gtest/gtest.h"
10 #include "ui/gfx/font.h"
12 namespace gfx {
14 namespace {
16 // Returns a font based on |base_font| with height at most |target_height| and
17 // font size maximized. Returns |base_font| if height is already equal.
18 gfx::Font AdjustFontSizeForHeight(const gfx::Font& base_font,
19 int target_height) {
20 Font expected_font = base_font;
21 if (base_font.GetHeight() < target_height) {
22 // Increase size while height is <= |target_height|.
23 Font larger_font = base_font.Derive(1, 0);
24 while (larger_font.GetHeight() <= target_height) {
25 expected_font = larger_font;
26 larger_font = larger_font.Derive(1, 0);
28 } else if (expected_font.GetHeight() > target_height) {
29 // Decrease size until height is <= |target_height|.
30 do {
31 expected_font = expected_font.Derive(-1, 0);
32 } while (expected_font.GetHeight() > target_height);
34 return expected_font;
37 } // namespace
39 TEST(PlatformFontWinTest, DeriveFontWithHeight) {
40 const Font base_font;
41 PlatformFontWin* platform_font =
42 static_cast<PlatformFontWin*>(base_font.platform_font());
44 for (int i = -10; i < 10; i++) {
45 const int target_height = base_font.GetHeight() + i;
46 Font expected_font = AdjustFontSizeForHeight(base_font, target_height);
47 ASSERT_LE(expected_font.GetHeight(), target_height);
49 Font derived_font = platform_font->DeriveFontWithHeight(target_height, 0);
50 EXPECT_EQ(expected_font.GetFontName(), derived_font.GetFontName());
51 EXPECT_EQ(expected_font.GetFontSize(), derived_font.GetFontSize());
52 EXPECT_LE(expected_font.GetHeight(), target_height);
53 EXPECT_EQ(0, derived_font.GetStyle());
55 derived_font = platform_font->DeriveFontWithHeight(target_height,
56 Font::BOLD);
57 EXPECT_EQ(expected_font.GetFontName(), derived_font.GetFontName());
58 EXPECT_EQ(expected_font.GetFontSize(), derived_font.GetFontSize());
59 EXPECT_LE(expected_font.GetHeight(), target_height);
60 EXPECT_EQ(Font::BOLD, derived_font.GetStyle());
62 // Test that deriving from the new font has the expected result.
63 Font rederived_font = derived_font.Derive(1, 0);
64 expected_font = Font(derived_font.GetFontName(),
65 derived_font.GetFontSize() + 1);
66 EXPECT_EQ(expected_font.GetFontName(), rederived_font.GetFontName());
67 EXPECT_EQ(expected_font.GetFontSize(), rederived_font.GetFontSize());
68 EXPECT_EQ(expected_font.GetHeight(), rederived_font.GetHeight());
72 TEST(PlatformFontWinTest, DeriveFontWithHeight_Consistency) {
73 gfx::Font arial_12("Arial", 12);
74 ASSERT_GT(16, arial_12.GetHeight());
75 gfx::Font derived_1 = static_cast<PlatformFontWin*>(
76 arial_12.platform_font())->DeriveFontWithHeight(16, 0);
78 gfx::Font arial_15("Arial", 15);
79 ASSERT_LT(16, arial_15.GetHeight());
80 gfx::Font derived_2 = static_cast<PlatformFontWin*>(
81 arial_15.platform_font())->DeriveFontWithHeight(16, 0);
83 EXPECT_EQ(derived_1.GetFontSize(), derived_2.GetFontSize());
84 EXPECT_EQ(16, derived_1.GetHeight());
85 EXPECT_EQ(16, derived_2.GetHeight());
88 // Callback function used by DeriveFontWithHeight_MinSize() below.
89 static int GetMinFontSize() {
90 return 10;
93 TEST(PlatformFontWinTest, DeriveFontWithHeight_MinSize) {
94 PlatformFontWin::GetMinimumFontSizeCallback old_callback =
95 PlatformFontWin::get_minimum_font_size_callback;
96 PlatformFontWin::get_minimum_font_size_callback = &GetMinFontSize;
98 const Font base_font;
99 const Font min_font(base_font.GetFontName(), GetMinFontSize());
100 PlatformFontWin* platform_font =
101 static_cast<PlatformFontWin*>(base_font.platform_font());
103 const Font derived_font =
104 platform_font->DeriveFontWithHeight(min_font.GetHeight() - 1, 0);
105 EXPECT_EQ(min_font.GetFontSize(), derived_font.GetFontSize());
106 EXPECT_EQ(min_font.GetHeight(), derived_font.GetHeight());
108 PlatformFontWin::get_minimum_font_size_callback = old_callback;
111 TEST(PlatformFontWinTest, DeriveFontWithHeight_TooSmall) {
112 const Font base_font;
113 PlatformFontWin* platform_font =
114 static_cast<PlatformFontWin*>(base_font.platform_font());
116 const Font derived_font = platform_font->DeriveFontWithHeight(1, 0);
117 EXPECT_GT(derived_font.GetHeight(), 1);
120 } // namespace gfx