| // 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/platform_font_win.h" |
| |
| #include <memory.h> |
| #include <string.h> |
| #include <windows.h> |
| |
| #include "base/logging.h" |
| #include "base/memory/ref_counted.h" |
| #include "base/strings/string16.h" |
| #include "base/strings/utf_string_conversions.h" |
| #include "base/win/scoped_hdc.h" |
| #include "base/win/scoped_select_object.h" |
| #include "testing/gtest/include/gtest/gtest.h" |
| #include "ui/gfx/font.h" |
| #include "ui/gfx/win/direct_write.h" |
| #include "ui/gfx/win/scoped_set_map_mode.h" |
| |
| namespace gfx { |
| |
| // Test whether font metrics retrieved by DirectWrite (skia) and GDI match as |
| // per assumptions mentioned below:- |
| // 1. Font size is the same |
| // 2. The difference between GDI and DirectWrite for font height, baseline, |
| // and cap height is at most 1. For smaller font sizes under 12, GDI |
| // font heights/baselines/cap height are equal/larger by 1 point. For larger |
| // font sizes DirectWrite font heights/baselines/cap height are equal/larger |
| // by 1 point. |
| TEST(PlatformFontWinTest, Metrics_SkiaVersusGDI) { |
| // Describes the font being tested. |
| struct FontInfo { |
| base::string16 font_name; |
| int font_size; |
| }; |
| |
| FontInfo fonts[] = { |
| {base::ASCIIToUTF16("Arial"), 6}, |
| {base::ASCIIToUTF16("Arial"), 8}, |
| {base::ASCIIToUTF16("Arial"), 10}, |
| {base::ASCIIToUTF16("Arial"), 12}, |
| {base::ASCIIToUTF16("Arial"), 16}, |
| {base::ASCIIToUTF16("Symbol"), 6}, |
| {base::ASCIIToUTF16("Symbol"), 10}, |
| {base::ASCIIToUTF16("Symbol"), 12}, |
| {base::ASCIIToUTF16("Tahoma"), 10}, |
| {base::ASCIIToUTF16("Tahoma"), 16}, |
| {base::ASCIIToUTF16("Segoe UI"), 6}, |
| {base::ASCIIToUTF16("Segoe UI"), 8}, |
| {base::ASCIIToUTF16("Segoe UI"), 20}, |
| }; |
| |
| base::win::ScopedGetDC screen_dc(NULL); |
| gfx::ScopedSetMapMode mode(screen_dc, MM_TEXT); |
| |
| for (const FontInfo& font : fonts) { |
| LOGFONT font_info = {0}; |
| |
| font_info.lfHeight = -font.font_size; |
| font_info.lfWeight = FW_NORMAL; |
| wcscpy_s(font_info.lfFaceName, font.font_name.length() + 1, |
| font.font_name.c_str()); |
| |
| HFONT hFont = CreateFontIndirect(&font_info); |
| |
| TEXTMETRIC font_metrics; |
| PlatformFontWin::GetTextMetricsForFont(screen_dc, hFont, &font_metrics); |
| |
| scoped_refptr<PlatformFontWin::HFontRef> h_font_gdi( |
| PlatformFontWin::CreateHFontRefFromGDI(hFont, font_metrics)); |
| |
| scoped_refptr<PlatformFontWin::HFontRef> h_font_skia( |
| PlatformFontWin::CreateHFontRefFromSkia(hFont, font_metrics)); |
| |
| EXPECT_EQ(h_font_gdi->font_size(), h_font_skia->font_size()); |
| EXPECT_EQ(h_font_gdi->style(), h_font_skia->style()); |
| EXPECT_EQ(h_font_gdi->font_name(), h_font_skia->font_name()); |
| EXPECT_EQ(h_font_gdi->ave_char_width(), h_font_skia->ave_char_width()); |
| |
| EXPECT_LE(abs(h_font_gdi->cap_height() - h_font_skia->cap_height()), 1); |
| EXPECT_LE(abs(h_font_gdi->baseline() - h_font_skia->baseline()), 1); |
| EXPECT_LE(abs(h_font_gdi->height() - h_font_skia->height()), 1); |
| } |
| } |
| |
| // Test if DirectWrite font fallback works correctly, i.e. whether DirectWrite |
| // fonts handle the font names in the |
| // HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\FontSubstitutes key |
| // correctly. The expectation is that the actual font created should be the |
| // one specified by the value for the substituted font. For e.g. MS Shell Dlg |
| // should create Microsoft Sans Serif, etc. |
| // For random fonts which are not substitutes, DirectWrite should fallback |
| // to Arial on a properly configured machine. |
| TEST(PlatformFontWinTest, DirectWriteFontSubstitution) { |
| // Describes the font being tested. |
| struct FontInfo { |
| base::string16 font_name; |
| std::string expected_font_name; |
| }; |
| |
| FontInfo fonts[] = { |
| {base::ASCIIToUTF16("MS Shell Dlg"), "Microsoft Sans Serif"}, |
| {base::ASCIIToUTF16("MS Shell Dlg 2"), "Tahoma"}, |
| {base::ASCIIToUTF16("FooBar"), "Arial"}, |
| }; |
| |
| base::win::ScopedGetDC screen_dc(NULL); |
| gfx::ScopedSetMapMode mode(screen_dc, MM_TEXT); |
| |
| for (const FontInfo& font : fonts) { |
| LOGFONT font_info = {0}; |
| |
| font_info.lfHeight = -10; |
| font_info.lfWeight = FW_NORMAL; |
| wcscpy_s(font_info.lfFaceName, font.font_name.length() + 1, |
| font.font_name.c_str()); |
| |
| HFONT hFont = CreateFontIndirect(&font_info); |
| |
| TEXTMETRIC font_metrics; |
| PlatformFontWin::GetTextMetricsForFont(screen_dc, hFont, &font_metrics); |
| |
| scoped_refptr<PlatformFontWin::HFontRef> h_font_skia( |
| PlatformFontWin::CreateHFontRefFromSkia(hFont, font_metrics)); |
| |
| EXPECT_EQ(font.expected_font_name, h_font_skia->font_name()); |
| } |
| } |
| |
| } // namespace gfx |