blob: 2f1da59247164f7734cf15ee4d6661993991e6ac [file] [log] [blame]
// 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"
typedef PlatformTest L10nUtilWinTest;
TEST_F(L10nUtilWinTest, TestDPIScaling) {
// Baseline font for comparison.
NONCLIENTMETRICS_XP 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);
}