/*
* Copyright (c) 2011 Google Inc. All rights reserved.
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* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
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* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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#include "config.h"
#include "platform/fonts/FontCache.h"
#include "platform/fonts/SimpleFontData.h"
#include "platform/fonts/FontDescription.h"
#include "SkTypeface_android.h"
namespace WebCore {
static AtomicString getFamilyNameForCharacter(UChar32 c, UScriptCode script)
{
// This is a hack to use the preferred font for CJK scripts.
// FIXME: Use new Skia API once Android system supports per-family and per-script fallback fonts.
const char* locale;
switch (script) {
case USCRIPT_SIMPLIFIED_HAN:
locale = "zh-CN";
break;
case USCRIPT_TRADITIONAL_HAN:
locale = "zh-TW";
break;
case USCRIPT_KATAKANA_OR_HIRAGANA:
locale = "ja";
break;
case USCRIPT_HANGUL:
locale = "ko";
break;
default:
locale = 0;
break;
}
SkString skiaFamilyName;
if (!SkGetFallbackFamilyNameForChar(c, locale, &skiaFamilyName) || skiaFamilyName.isEmpty())
return emptyAtom;
return skiaFamilyName.c_str();
}
PassRefPtr<SimpleFontData> FontCache::platformFallbackForCharacter(const FontDescription& fontDescription, UChar32 c, const SimpleFontData*)
{
AtomicString familyName = getFamilyNameForCharacter(c, fontDescription.script());
if (familyName.isEmpty())
return getLastResortFallbackFont(fontDescription, DoNotRetain);
return fontDataFromFontPlatformData(getFontPlatformData(fontDescription, familyName), DoNotRetain);
}
// static
AtomicString FontCache::getGenericFamilyNameForScript(const AtomicString& familyName, UScriptCode script)
{
// This is a hack to use the preferred font for CJK scripts.
// FIXME: Use new Skia API once Android system supports per-family and per-script fallback fonts.
UChar32 examplerChar;
switch (script) {
case USCRIPT_SIMPLIFIED_HAN:
case USCRIPT_TRADITIONAL_HAN:
case USCRIPT_KATAKANA_OR_HIRAGANA:
examplerChar = 0x4E00; // A common character in Japanese and Chinese.
break;
case USCRIPT_HANGUL:
examplerChar = 0xAC00;
break;
default:
// For other scripts, use the default generic family mapping logic.
return familyName;
}
return getFamilyNameForCharacter(examplerChar, script);
}
} // namespace WebCore