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// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ui/gfx/system_fonts_win.h"
#include <windows.h>
#include "base/check_op.h"
#include "base/compiler_specific.h"
#include "base/strings/utf_string_conversions.h"
#include "build/build_config.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace gfx {
namespace win {
namespace {
class SystemFontsWinTest : public testing::Test {
public:
SystemFontsWinTest() = default;
SystemFontsWinTest(const SystemFontsWinTest&) = delete;
SystemFontsWinTest& operator=(const SystemFontsWinTest&) = delete;
protected:
void SetUp() override {
#if BUILDFLAG(IS_WIN)
// System fonts is keeping a cache of loaded system fonts. These fonts are
// scaled based on global callbacks configured on startup. The tests in this
// file are testing these callbacks and need to be sure we cleared the
// global state to avoid flaky tests.
win::ResetSystemFontsForTesting();
#endif
}
};
LOGFONT CreateLOGFONT(const wchar_t* name, LONG height) {
LOGFONT logfont = {};
logfont.lfHeight = height;
auto result = UNSAFE_TODO(wcscpy_s(logfont.lfFaceName, name));
DCHECK_EQ(0, result);
return logfont;
}
const wchar_t kSegoeUI[] = L"Segoe UI";
const wchar_t kArial[] = L"Arial";
} // namespace
TEST_F(SystemFontsWinTest, AdjustFontSize) {
EXPECT_EQ(10, gfx::win::AdjustFontSize(10, 0));
EXPECT_EQ(-10, gfx::win::AdjustFontSize(-10, 0));
EXPECT_EQ(8, gfx::win::AdjustFontSize(10, -2));
EXPECT_EQ(-8, gfx::win::AdjustFontSize(-10, -2));
EXPECT_EQ(13, gfx::win::AdjustFontSize(10, 3));
EXPECT_EQ(-13, gfx::win::AdjustFontSize(-10, 3));
EXPECT_EQ(1, gfx::win::AdjustFontSize(10, -9));
EXPECT_EQ(-1, gfx::win::AdjustFontSize(-10, -9));
EXPECT_EQ(0, gfx::win::AdjustFontSize(10, -12));
EXPECT_EQ(0, gfx::win::AdjustFontSize(-10, -12));
}
TEST_F(SystemFontsWinTest, AdjustFontSize_MinimumSizeSpecified) {
gfx::win::SetGetMinimumFontSizeCallback([] { return 1; });
EXPECT_EQ(10, gfx::win::AdjustFontSize(10, 0));
EXPECT_EQ(-10, gfx::win::AdjustFontSize(-10, 0));
EXPECT_EQ(8, gfx::win::AdjustFontSize(10, -2));
EXPECT_EQ(-8, gfx::win::AdjustFontSize(-10, -2));
EXPECT_EQ(13, gfx::win::AdjustFontSize(10, 3));
EXPECT_EQ(-13, gfx::win::AdjustFontSize(-10, 3));
EXPECT_EQ(1, gfx::win::AdjustFontSize(10, -9));
EXPECT_EQ(-1, gfx::win::AdjustFontSize(-10, -9));
EXPECT_EQ(1, gfx::win::AdjustFontSize(10, -12));
EXPECT_EQ(-1, gfx::win::AdjustFontSize(-10, -12));
}
TEST_F(SystemFontsWinTest, AdjustLOGFONT_NoAdjustment) {
LOGFONT logfont = CreateLOGFONT(kSegoeUI, -12);
FontAdjustment adjustment;
AdjustLOGFONTForTesting(adjustment, &logfont);
EXPECT_EQ(-12, logfont.lfHeight);
EXPECT_STREQ(kSegoeUI, logfont.lfFaceName);
}
TEST_F(SystemFontsWinTest, AdjustLOGFONT_ChangeFace) {
LOGFONT logfont = CreateLOGFONT(kSegoeUI, -12);
FontAdjustment adjustment{kArial, 1.0};
AdjustLOGFONTForTesting(adjustment, &logfont);
EXPECT_EQ(-12, logfont.lfHeight);
EXPECT_STREQ(kArial, logfont.lfFaceName);
}
TEST_F(SystemFontsWinTest, AdjustLOGFONT_ScaleDown) {
LOGFONT logfont = CreateLOGFONT(kSegoeUI, -12);
FontAdjustment adjustment{L"", 0.5};
AdjustLOGFONTForTesting(adjustment, &logfont);
EXPECT_EQ(-6, logfont.lfHeight);
EXPECT_STREQ(kSegoeUI, logfont.lfFaceName);
logfont = CreateLOGFONT(kSegoeUI, 12);
adjustment = {L"", 0.5};
AdjustLOGFONTForTesting(adjustment, &logfont);
EXPECT_EQ(6, logfont.lfHeight);
EXPECT_STREQ(kSegoeUI, logfont.lfFaceName);
}
TEST_F(SystemFontsWinTest, AdjustLOGFONT_ScaleDownWithRounding) {
LOGFONT logfont = CreateLOGFONT(kSegoeUI, -10);
FontAdjustment adjustment{L"", 0.85};
AdjustLOGFONTForTesting(adjustment, &logfont);
EXPECT_EQ(-9, logfont.lfHeight);
EXPECT_STREQ(kSegoeUI, logfont.lfFaceName);
logfont = CreateLOGFONT(kSegoeUI, 10);
adjustment = {L"", 0.85};
AdjustLOGFONTForTesting(adjustment, &logfont);
EXPECT_EQ(9, logfont.lfHeight);
EXPECT_STREQ(kSegoeUI, logfont.lfFaceName);
}
TEST_F(SystemFontsWinTest, AdjustLOGFONT_ScaleUpWithFaceChange) {
LOGFONT logfont = CreateLOGFONT(kSegoeUI, -12);
FontAdjustment adjustment{kArial, 1.5};
AdjustLOGFONTForTesting(adjustment, &logfont);
EXPECT_EQ(-18, logfont.lfHeight);
EXPECT_STREQ(kArial, logfont.lfFaceName);
logfont = CreateLOGFONT(kSegoeUI, 12);
adjustment = {kArial, 1.5};
AdjustLOGFONTForTesting(adjustment, &logfont);
EXPECT_EQ(18, logfont.lfHeight);
EXPECT_STREQ(kArial, logfont.lfFaceName);
}
TEST_F(SystemFontsWinTest, AdjustLOGFONT_ScaleUpWithRounding) {
LOGFONT logfont = CreateLOGFONT(kSegoeUI, -10);
FontAdjustment adjustment{L"", 1.111};
AdjustLOGFONTForTesting(adjustment, &logfont);
EXPECT_EQ(-11, logfont.lfHeight);
EXPECT_STREQ(kSegoeUI, logfont.lfFaceName);
logfont = CreateLOGFONT(kSegoeUI, 10);
adjustment = {L"", 1.11};
AdjustLOGFONTForTesting(adjustment, &logfont);
EXPECT_EQ(11, logfont.lfHeight);
EXPECT_STREQ(kSegoeUI, logfont.lfFaceName);
}
TEST_F(SystemFontsWinTest, GetFontFromLOGFONT) {
LOGFONT logfont = CreateLOGFONT(kSegoeUI, -10);
Font font = GetFontFromLOGFONTForTesting(logfont);
EXPECT_EQ(font.GetStyle(), Font::FontStyle::NORMAL);
EXPECT_EQ(font.GetWeight(), Font::Weight::NORMAL);
}
TEST_F(SystemFontsWinTest, GetFontFromLOGFONT_WithStyle) {
LOGFONT logfont = CreateLOGFONT(kSegoeUI, -10);
logfont.lfItalic = 1;
logfont.lfWeight = 700;
Font font = GetFontFromLOGFONTForTesting(logfont);
EXPECT_EQ(font.GetStyle(), Font::FontStyle::ITALIC);
EXPECT_EQ(font.GetWeight(), Font::Weight::BOLD);
}
TEST_F(SystemFontsWinTest, GetDefaultSystemFont) {
Font system_font = GetDefaultSystemFont();
EXPECT_EQ(base::WideToUTF8(kSegoeUI), system_font.GetFontName());
}
} // namespace win
} // namespace gfx
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