| // Copyright (c) 2013 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 "ui/base/l10n/l10n_util_win.h" |
| |
| #include <windows.h> |
| |
| #include "base/win/win_util.h" |
| #include "testing/gtest/include/gtest/gtest.h" |
| #include "testing/platform_test.h" |
| #include "ui/gfx/win/dpi.h" |
| |
| typedef PlatformTest L10nUtilWinTest; |
| |
| TEST_F(L10nUtilWinTest, TestDPIScaling) { |
| // Baseline font for comparison. |
| NONCLIENTMETRICS metrics; |
| base::win::GetNonClientMetrics(&metrics); |
| LOGFONT lf = metrics.lfMessageFont; |
| l10n_util::AdjustUIFont(&lf); |
| int size = lf.lfHeight; |
| float rounding = size < 0 ? -0.5f : 0.5f; |
| |
| // Test that font size is properly normalized for DIP. In high-DPI mode, the |
| // font metrics are scaled based on the DPI scale factor. For Windows 8, 140% |
| // and 180% font scaling are supported. Simulate size normalization for a DPI- |
| // aware process by manually scaling up the font and checking that it returns |
| // to the expected size. |
| lf.lfHeight = static_cast<int>(1.4 * size + rounding); |
| l10n_util::AdjustUIFontForDIP(1.4f, &lf); |
| EXPECT_NEAR(size, lf.lfHeight, 1); |
| |
| lf.lfHeight = static_cast<int>(1.8 * size + rounding); |
| l10n_util::AdjustUIFontForDIP(1.8f, &lf); |
| EXPECT_NEAR(size, lf.lfHeight, 1); |
| } |