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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 AlternateFontFamily_h
#define AlternateFontFamily_h
#include "platform/fonts/FontDescription.h"
#include "wtf/text/AtomicString.h"
namespace WebCore {
// We currently do not support bitmap fonts on windows (with GDI_FONTS_ON_WINDOWS enabled).
// 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. This also allows the
// GDI_FONTS_ON_WINDOWS disabled code path to match our current behavior.
inline const AtomicString& adjustFamilyNameToAvoidUnsupportedFonts(const AtomicString& familyName)
{
#if OS(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.
DEFINE_STATIC_LOCAL(AtomicString, courier, ("Courier", AtomicString::ConstructFromLiteral));
DEFINE_STATIC_LOCAL(AtomicString, courierNew, ("Courier New", AtomicString::ConstructFromLiteral));
if (equalIgnoringCase(familyName, courier))
return courierNew;
// Alias 'MS Sans Serif' (bitmap font) -> 'Microsoft Sans Serif'
// (truetype font).
DEFINE_STATIC_LOCAL(AtomicString, msSans, ("MS Sans Serif", AtomicString::ConstructFromLiteral));
DEFINE_STATIC_LOCAL(AtomicString, microsoftSans, ("Microsoft Sans Serif", AtomicString::ConstructFromLiteral));
if (equalIgnoringCase(familyName, msSans))
return microsoftSans;
// Alias 'MS Serif' (bitmap) -> 'Times New Roman' (truetype font).
// There's no 'Microsoft Sans Serif-equivalent' for Serif.
DEFINE_STATIC_LOCAL(AtomicString, msSerif, ("MS Serif", AtomicString::ConstructFromLiteral));
DEFINE_STATIC_LOCAL(AtomicString, timesNewRoman, ("Times New Roman", AtomicString::ConstructFromLiteral));
if (equalIgnoringCase(familyName, msSerif))
return timesNewRoman;
#endif
return familyName;
}
inline const AtomicString& alternateFamilyName(const AtomicString& familyName)
{
// Alias Courier <-> Courier New
DEFINE_STATIC_LOCAL(AtomicString, courier, ("Courier", AtomicString::ConstructFromLiteral));
DEFINE_STATIC_LOCAL(AtomicString, courierNew, ("Courier New", AtomicString::ConstructFromLiteral));
if (equalIgnoringCase(familyName, courier))
return courierNew;
#if !OS(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 (equalIgnoringCase(familyName, courierNew))
return courier;
#endif
// Alias Times and Times New Roman.
DEFINE_STATIC_LOCAL(AtomicString, times, ("Times", AtomicString::ConstructFromLiteral));
DEFINE_STATIC_LOCAL(AtomicString, timesNewRoman, ("Times New Roman", AtomicString::ConstructFromLiteral));
if (equalIgnoringCase(familyName, times))
return timesNewRoman;
if (equalIgnoringCase(familyName, timesNewRoman))
return times;
// Alias Arial and Helvetica
DEFINE_STATIC_LOCAL(AtomicString, arial, ("Arial", AtomicString::ConstructFromLiteral));
DEFINE_STATIC_LOCAL(AtomicString, helvetica, ("Helvetica", AtomicString::ConstructFromLiteral));
if (equalIgnoringCase(familyName, arial))
return helvetica;
if (equalIgnoringCase(familyName, helvetica))
return arial;
return emptyAtom;
}
inline const AtomicString getFallbackFontFamily(const FontDescription& description)
{
DEFINE_STATIC_LOCAL(const AtomicString, sansStr, ("Sans", AtomicString::ConstructFromLiteral));
DEFINE_STATIC_LOCAL(const AtomicString, serifStr, ("Serif", AtomicString::ConstructFromLiteral));
DEFINE_STATIC_LOCAL(const AtomicString, monospaceStr, ("Monospace", AtomicString::ConstructFromLiteral));
switch (description.genericFamily()) {
case FontDescription::SerifFamily:
return serifStr;
case FontDescription::MonospaceFamily:
return monospaceStr;
case FontDescription::SansSerifFamily:
default:
return sansStr;
}
}
} // namespace WebCore
#endif // AlternateFontFamily_h
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