| // Copyright (c) 2012 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/gfx/font.h" |
| |
| #include "base/strings/string16.h" |
| #include "base/strings/string_util.h" |
| #include "base/strings/utf_string_conversions.h" |
| #include "testing/gtest/include/gtest/gtest.h" |
| |
| #if defined(OS_LINUX) && !defined(USE_OZONE) |
| #include <pango/pango.h> |
| #elif defined(OS_WIN) |
| #include "ui/gfx/platform_font_win.h" |
| #endif |
| |
| namespace gfx { |
| namespace { |
| |
| class FontTest : public testing::Test { |
| public: |
| // Fulfills the memory management contract as outlined by the comment at |
| // gfx::Font::GetNativeFont(). |
| void FreeIfNecessary(NativeFont font) { |
| #if defined(OS_LINUX) && !defined(USE_OZONE) |
| pango_font_description_free(font); |
| #endif |
| } |
| }; |
| |
| #if defined(OS_WIN) |
| class ScopedMinimumFontSizeCallback { |
| public: |
| explicit ScopedMinimumFontSizeCallback(int minimum_size) { |
| minimum_size_ = minimum_size; |
| old_callback_ = PlatformFontWin::get_minimum_font_size_callback; |
| PlatformFontWin::get_minimum_font_size_callback = &GetMinimumFontSize; |
| } |
| |
| ~ScopedMinimumFontSizeCallback() { |
| PlatformFontWin::get_minimum_font_size_callback = old_callback_; |
| } |
| |
| private: |
| static int GetMinimumFontSize() { |
| return minimum_size_; |
| } |
| |
| PlatformFontWin::GetMinimumFontSizeCallback old_callback_; |
| static int minimum_size_; |
| |
| DISALLOW_COPY_AND_ASSIGN(ScopedMinimumFontSizeCallback); |
| }; |
| |
| int ScopedMinimumFontSizeCallback::minimum_size_ = 0; |
| #endif // defined(OS_WIN) |
| |
| |
| TEST_F(FontTest, LoadArial) { |
| Font cf("Arial", 16); |
| NativeFont native = cf.GetNativeFont(); |
| EXPECT_TRUE(native); |
| EXPECT_EQ(cf.GetStyle(), Font::NORMAL); |
| EXPECT_EQ(cf.GetFontSize(), 16); |
| EXPECT_EQ(cf.GetFontName(), "Arial"); |
| EXPECT_EQ("arial", StringToLowerASCII(cf.GetActualFontNameForTesting())); |
| FreeIfNecessary(native); |
| } |
| |
| TEST_F(FontTest, LoadArialBold) { |
| Font cf("Arial", 16); |
| Font bold(cf.DeriveFont(0, Font::BOLD)); |
| NativeFont native = bold.GetNativeFont(); |
| EXPECT_TRUE(native); |
| EXPECT_EQ(bold.GetStyle(), Font::BOLD); |
| EXPECT_EQ("arial", StringToLowerASCII(cf.GetActualFontNameForTesting())); |
| FreeIfNecessary(native); |
| } |
| |
| TEST_F(FontTest, Ascent) { |
| Font cf("Arial", 16); |
| EXPECT_GT(cf.GetBaseline(), 2); |
| EXPECT_LE(cf.GetBaseline(), 22); |
| } |
| |
| TEST_F(FontTest, Height) { |
| Font cf("Arial", 16); |
| EXPECT_GE(cf.GetHeight(), 16); |
| // TODO(akalin): Figure out why height is so large on Linux. |
| EXPECT_LE(cf.GetHeight(), 26); |
| } |
| |
| TEST_F(FontTest, CapHeight) { |
| Font cf("Arial", 16); |
| EXPECT_GT(cf.GetCapHeight(), 0); |
| EXPECT_GT(cf.GetCapHeight(), cf.GetHeight() / 2); |
| #if defined(OS_CHROMEOS) || defined(OS_LINUX) |
| EXPECT_EQ(cf.GetCapHeight(), cf.GetBaseline()); |
| #else |
| EXPECT_LT(cf.GetCapHeight(), cf.GetBaseline()); |
| #endif |
| } |
| |
| TEST_F(FontTest, AvgWidths) { |
| Font cf("Arial", 16); |
| EXPECT_EQ(cf.GetExpectedTextWidth(0), 0); |
| EXPECT_GT(cf.GetExpectedTextWidth(1), cf.GetExpectedTextWidth(0)); |
| EXPECT_GT(cf.GetExpectedTextWidth(2), cf.GetExpectedTextWidth(1)); |
| EXPECT_GT(cf.GetExpectedTextWidth(3), cf.GetExpectedTextWidth(2)); |
| } |
| |
| TEST_F(FontTest, AvgCharWidth) { |
| Font cf("Arial", 16); |
| EXPECT_GT(cf.GetAverageCharacterWidth(), 0); |
| } |
| |
| TEST_F(FontTest, Widths) { |
| Font cf("Arial", 16); |
| EXPECT_EQ(cf.GetStringWidth(base::string16()), 0); |
| EXPECT_GT(cf.GetStringWidth(ASCIIToUTF16("a")), |
| cf.GetStringWidth(base::string16())); |
| EXPECT_GT(cf.GetStringWidth(ASCIIToUTF16("ab")), |
| cf.GetStringWidth(ASCIIToUTF16("a"))); |
| EXPECT_GT(cf.GetStringWidth(ASCIIToUTF16("abc")), |
| cf.GetStringWidth(ASCIIToUTF16("ab"))); |
| } |
| |
| #if !defined(OS_WIN) |
| // On Windows, Font::GetActualFontNameForTesting() doesn't work well for now. |
| // http://crbug.com/327287 |
| TEST_F(FontTest, GetActualFontNameForTesting) { |
| Font arial("Arial", 16); |
| EXPECT_EQ("arial", StringToLowerASCII(arial.GetActualFontNameForTesting())); |
| Font symbol("Symbol", 16); |
| EXPECT_EQ("symbol", StringToLowerASCII(symbol.GetActualFontNameForTesting())); |
| |
| const char* const invalid_font_name = "no_such_font_name"; |
| Font fallback_font(invalid_font_name, 16); |
| EXPECT_NE(invalid_font_name, |
| StringToLowerASCII(fallback_font.GetActualFontNameForTesting())); |
| } |
| #endif |
| |
| #if defined(OS_WIN) |
| TEST_F(FontTest, DeriveFontResizesIfSizeTooSmall) { |
| Font cf("Arial", 8); |
| // The minimum font size is set to 5 in browser_main.cc. |
| ScopedMinimumFontSizeCallback minimum_size(5); |
| |
| Font derived_font = cf.DeriveFont(-4); |
| EXPECT_EQ(5, derived_font.GetFontSize()); |
| } |
| |
| TEST_F(FontTest, DeriveFontKeepsOriginalSizeIfHeightOk) { |
| Font cf("Arial", 8); |
| // The minimum font size is set to 5 in browser_main.cc. |
| ScopedMinimumFontSizeCallback minimum_size(5); |
| |
| Font derived_font = cf.DeriveFont(-2); |
| EXPECT_EQ(6, derived_font.GetFontSize()); |
| } |
| #endif // defined(OS_WIN) |
| |
| } // namespace |
| } // namespace gfx |