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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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