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/*
* Copyright (C) 2006, 2008 Apple Inc. All rights reserved.
* Copyright (C) 2007 Nicholas Shanks <webkit@nickshanks.com>
* Copyright (C) 2013 Google, Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef THIRD_PARTY_BLINK_RENDERER_PLATFORM_FONTS_ALTERNATE_FONT_FAMILY_H_
#define THIRD_PARTY_BLINK_RENDERER_PLATFORM_FONTS_ALTERNATE_FONT_FAMILY_H_
#include "build/build_config.h"
#include "third_party/blink/renderer/platform/font_family_names.h"
#include "third_party/blink/renderer/platform/fonts/font_description.h"
#include "third_party/blink/renderer/platform/wtf/text/atomic_string.h"
namespace blink {
// We currently do not support bitmap fonts on windows.
// Instead of trying to construct a bitmap font and then going down the fallback
// path map certain common bitmap fonts to their truetype equivalent up front.
inline const AtomicString& AdjustFamilyNameToAvoidUnsupportedFonts(
const AtomicString& family_name) {
#if BUILDFLAG(IS_WIN)
// On Windows, 'Courier New' (truetype font) is always present and
// 'Courier' is a bitmap font. On Mac on the other hand 'Courier' is
// a truetype font. Thus pages asking for Courier are better of
// using 'Courier New' on windows.
if (EqualIgnoringASCIICase(family_name, font_family_names::kCourier))
return font_family_names::kCourierNew;
// Alias 'MS Sans Serif' (bitmap font) -> 'Microsoft Sans Serif'
// (truetype font).
if (EqualIgnoringASCIICase(family_name, font_family_names::kMSSansSerif))
return font_family_names::kMicrosoftSansSerif;
// Alias 'MS Serif' (bitmap) -> 'Times New Roman' (truetype font).
// Alias 'Times' -> 'Times New Roman' (truetype font).
// There's no 'Microsoft Sans Serif-equivalent' for Serif.
if (EqualIgnoringASCIICase(family_name, font_family_names::kMSSerif) ||
EqualIgnoringASCIICase(family_name, font_family_names::kTimes))
return font_family_names::kTimesNewRoman;
#endif
return family_name;
}
inline const AtomicString& AlternateFamilyName(
const AtomicString& family_name) {
// Alias Courier <-> Courier New
if (EqualIgnoringASCIICase(family_name, font_family_names::kCourier))
return font_family_names::kCourierNew;
#if !BUILDFLAG(IS_WIN)
// On Windows, Courier New (truetype font) is always present and
// Courier is a bitmap font. So, we don't want to map Courier New to
// Courier.
if (EqualIgnoringASCIICase(family_name, font_family_names::kCourierNew))
return font_family_names::kCourier;
#endif
// Alias Times and Times New Roman.
if (EqualIgnoringASCIICase(family_name, font_family_names::kTimes))
return font_family_names::kTimesNewRoman;
if (EqualIgnoringASCIICase(family_name, font_family_names::kTimesNewRoman))
return font_family_names::kTimes;
// Alias Arial and Helvetica
if (EqualIgnoringASCIICase(family_name, font_family_names::kArial))
return font_family_names::kHelvetica;
if (EqualIgnoringASCIICase(family_name, font_family_names::kHelvetica))
return font_family_names::kArial;
return g_empty_atom;
}
inline const AtomicString& GetFallbackFontFamily(
const FontDescription& description) {
switch (description.GenericFamily()) {
case FontDescription::kSansSerifFamily:
return font_family_names::kSansSerif;
case FontDescription::kSerifFamily:
return font_family_names::kSerif;
case FontDescription::kMonospaceFamily:
return font_family_names::kMonospace;
case FontDescription::kCursiveFamily:
return font_family_names::kCursive;
case FontDescription::kFantasyFamily:
return font_family_names::kFantasy;
default:
// Let the caller use the system default font.
return g_empty_atom;
}
}
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_PLATFORM_FONTS_ALTERNATE_FONT_FAMILY_H_
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