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 14typedef PlatformTest L10nUtilWinTest; 15 16TEST_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}