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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "ui/gfx/platform_font_win.h" | 5 #include "ui/gfx/platform_font_win.h" |
6 | 6 |
7 #include "base/logging.h" | 7 #include "base/logging.h" |
8 #include "base/memory/ref_counted.h" | 8 #include "base/memory/ref_counted.h" |
9 #include "base/strings/string16.h" | 9 #include "base/strings/string16.h" |
10 #include "base/strings/utf_string_conversions.h" | 10 #include "base/strings/utf_string_conversions.h" |
11 #include "base/win/scoped_hdc.h" | 11 #include "base/win/scoped_hdc.h" |
12 #include "base/win/scoped_select_object.h" | 12 #include "base/win/scoped_select_object.h" |
13 #include "testing/gtest/include/gtest/gtest.h" | 13 #include "testing/gtest/include/gtest/gtest.h" |
14 #include "ui/gfx/font.h" | 14 #include "ui/gfx/font.h" |
15 #include "ui/gfx/win/direct_write.h" | 15 #include "ui/gfx/win/direct_write.h" |
16 #include "ui/gfx/win/scoped_set_map_mode.h" | 16 #include "ui/gfx/win/scoped_set_map_mode.h" |
17 | 17 |
18 namespace gfx { | 18 namespace gfx { |
19 | 19 |
20 TEST(PlatformFontWinTest, DeriveFontWithHeight) { | |
21 const Font base_font; | |
22 PlatformFontWin* platform_font = | |
23 static_cast<PlatformFontWin*>(base_font.platform_font()); | |
24 | |
25 for (int i = -10; i < 10; i++) { | |
26 const int target_height = base_font.GetHeight() + i; | |
27 | |
28 Font derived_font = platform_font->DeriveFontWithHeight(target_height, 0); | |
29 EXPECT_LE(derived_font.GetHeight(), target_height); | |
30 EXPECT_GT(derived_font.Derive(1, 0).GetHeight(), target_height); | |
31 EXPECT_EQ(platform_font->GetActualFontNameForTesting(), | |
32 derived_font.GetActualFontNameForTesting()); | |
33 EXPECT_EQ(0, derived_font.GetStyle()); | |
34 | |
35 derived_font = platform_font->DeriveFontWithHeight(target_height, | |
36 Font::BOLD); | |
37 EXPECT_LE(derived_font.GetHeight(), target_height); | |
38 EXPECT_GT(derived_font.Derive(1, 0).GetHeight(), target_height); | |
39 EXPECT_EQ(platform_font->GetActualFontNameForTesting(), | |
40 derived_font.GetActualFontNameForTesting()); | |
41 EXPECT_EQ(Font::BOLD, derived_font.GetStyle()); | |
42 } | |
43 } | |
44 | |
45 TEST(PlatformFontWinTest, DeriveFontWithHeight_Consistency) { | |
46 gfx::Font arial_12("Arial", 12); | |
47 ASSERT_GT(16, arial_12.GetHeight()); | |
48 gfx::Font derived_1 = static_cast<PlatformFontWin*>( | |
49 arial_12.platform_font())->DeriveFontWithHeight(16, 0); | |
50 | |
51 gfx::Font arial_15("Arial", 15); | |
52 ASSERT_LT(16, arial_15.GetHeight()); | |
53 gfx::Font derived_2 = static_cast<PlatformFontWin*>( | |
54 arial_15.platform_font())->DeriveFontWithHeight(16, 0); | |
55 | |
56 EXPECT_EQ(derived_1.GetFontSize(), derived_2.GetFontSize()); | |
57 EXPECT_EQ(16, derived_1.GetHeight()); | |
58 EXPECT_EQ(16, derived_2.GetHeight()); | |
59 } | |
60 | |
61 // Callback function used by DeriveFontWithHeight_MinSize() below. | |
62 static int GetMinFontSize() { | |
63 return 10; | |
64 } | |
65 | |
66 TEST(PlatformFontWinTest, DeriveFontWithHeight_MinSize) { | |
67 PlatformFontWin::GetMinimumFontSizeCallback old_callback = | |
68 PlatformFontWin::get_minimum_font_size_callback; | |
69 PlatformFontWin::get_minimum_font_size_callback = &GetMinFontSize; | |
70 | |
71 const Font base_font; | |
72 const Font min_font(base_font.GetFontName(), GetMinFontSize()); | |
73 PlatformFontWin* platform_font = | |
74 static_cast<PlatformFontWin*>(base_font.platform_font()); | |
75 | |
76 const Font derived_font = | |
77 platform_font->DeriveFontWithHeight(min_font.GetHeight() - 1, 0); | |
78 EXPECT_EQ(min_font.GetFontSize(), derived_font.GetFontSize()); | |
79 EXPECT_EQ(min_font.GetHeight(), derived_font.GetHeight()); | |
80 | |
81 PlatformFontWin::get_minimum_font_size_callback = old_callback; | |
82 } | |
83 | |
84 TEST(PlatformFontWinTest, DeriveFontWithHeight_TooSmall) { | |
85 const Font base_font; | |
86 PlatformFontWin* platform_font = | |
87 static_cast<PlatformFontWin*>(base_font.platform_font()); | |
88 | |
89 const Font derived_font = platform_font->DeriveFontWithHeight(1, 0); | |
90 EXPECT_GT(derived_font.GetHeight(), 1); | |
91 } | |
92 | |
93 // Test whether font metrics retrieved by DirectWrite (skia) and GDI match as | 20 // Test whether font metrics retrieved by DirectWrite (skia) and GDI match as |
94 // per assumptions mentioned below:- | 21 // per assumptions mentioned below:- |
95 // 1. Font size is the same | 22 // 1. Font size is the same |
96 // 2. The difference between GDI and DirectWrite for font height, baseline, | 23 // 2. The difference between GDI and DirectWrite for font height, baseline, |
97 // and cap height is at most 1. For smaller font sizes under 12, GDI | 24 // and cap height is at most 1. For smaller font sizes under 12, GDI |
98 // font heights/baselines/cap height are equal/larger by 1 point. For larger | 25 // font heights/baselines/cap height are equal/larger by 1 point. For larger |
99 // font sizes DirectWrite font heights/baselines/cap height are equal/larger | 26 // font sizes DirectWrite font heights/baselines/cap height are equal/larger |
100 // by 1 point. | 27 // by 1 point. |
101 TEST(PlatformFontWinTest, Metrics_SkiaVersusGDI) { | 28 TEST(PlatformFontWinTest, Metrics_SkiaVersusGDI) { |
102 if (!gfx::win::IsDirectWriteEnabled()) | 29 if (!gfx::win::IsDirectWriteEnabled()) |
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198 PlatformFontWin::GetTextMetricsForFont(screen_dc, hFont, &font_metrics); | 125 PlatformFontWin::GetTextMetricsForFont(screen_dc, hFont, &font_metrics); |
199 | 126 |
200 scoped_refptr<PlatformFontWin::HFontRef> h_font_skia( | 127 scoped_refptr<PlatformFontWin::HFontRef> h_font_skia( |
201 PlatformFontWin::CreateHFontRefFromSkia(hFont, font_metrics)); | 128 PlatformFontWin::CreateHFontRefFromSkia(hFont, font_metrics)); |
202 | 129 |
203 EXPECT_EQ(font.expected_font_name, h_font_skia->font_name()); | 130 EXPECT_EQ(font.expected_font_name, h_font_skia->font_name()); |
204 } | 131 } |
205 } | 132 } |
206 | 133 |
207 } // namespace gfx | 134 } // namespace gfx |
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