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1 // Copyright (c) 2013 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. | |
4 | |
5 #include "ui/base/l10n/l10n_util_win.h" | |
6 | |
7 #include <windows.h> | |
8 | |
9 #include "base/win/win_util.h" | |
10 #include "testing/gtest/include/gtest/gtest.h" | |
11 #include "testing/platform_test.h" | |
12 #include "ui/gfx/win/dpi.h" | |
13 | |
14 typedef PlatformTest L10nUtilWinTest; | |
15 | |
16 TEST_F(L10nUtilWinTest, TestDPIScaling) { | |
17 // Baseline font for comparison. | |
18 NONCLIENTMETRICS metrics; | |
19 base::win::GetNonClientMetrics(&metrics); | |
20 LOGFONT lf = metrics.lfMessageFont; | |
21 l10n_util::AdjustUIFont(&lf); | |
22 int size = lf.lfHeight; | |
23 float rounding = size < 0 ? -0.5f : 0.5f; | |
24 | |
25 // Test that font size is properly normalized for DIP. In high-DPI mode, the | |
26 // font metrics are scaled based on the DPI scale factor. For Windows 8, 140% | |
27 // and 180% font scaling are supported. Simulate size normalization for a DPI- | |
28 // aware process by manually scaling up the font and checking that it returns | |
29 // to the expected size. | |
30 lf.lfHeight = static_cast<int>(1.4 * size + rounding); | |
31 l10n_util::AdjustUIFontForDIP(1.4f, &lf); | |
32 EXPECT_NEAR(size, lf.lfHeight, 1); | |
33 | |
34 lf.lfHeight = static_cast<int>(1.8 * size + rounding); | |
35 l10n_util::AdjustUIFontForDIP(1.8f, &lf); | |
36 EXPECT_NEAR(size, lf.lfHeight, 1); | |
37 } | |
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