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/*
* Copyright (c) 2006, 2007, 2008, 2009 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:
*
* * 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.
* * Neither the name of Google Inc. 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 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
* OWNER OR 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.
*/
#include "config.h"
#include "FontCache.h"
#include <fontconfig/fontconfig.h>
#include "AtomicString.h"
#include "CString.h"
#include "Font.h"
#include "FontDescription.h"
#include "FontPlatformData.h"
#include "Logging.h"
#include "NotImplemented.h"
#include "SimpleFontData.h"
#include "SkPaint.h"
#include "SkTypeface.h"
#include "SkUtils.h"
#include <wtf/Assertions.h>
namespace WebCore {
void FontCache::platformInit()
{
}
const SimpleFontData* FontCache::getFontDataForCharacters(const Font& font,
const UChar* characters,
int length)
{
FcCharSet* cset = FcCharSetCreate();
for (int i = 0; i < length; ++i)
FcCharSetAddChar(cset, characters[i]);
FcPattern* pattern = FcPatternCreate();
FcValue fcvalue;
fcvalue.type = FcTypeCharSet;
fcvalue.u.c = cset;
FcPatternAdd(pattern, FC_CHARSET, fcvalue, 0);
FcConfigSubstitute(0, pattern, FcMatchPattern);
FcDefaultSubstitute(pattern);
FcResult result;
FcPattern* match = FcFontMatch(0, pattern, &result);
FcPatternDestroy(pattern);
SimpleFontData* ret = 0;
if (match) {
FcChar8* family;
if (FcPatternGetString(match, FC_FAMILY, 0, &family) == FcResultMatch) {
AtomicString fontFamily(reinterpret_cast<char*>(family));
ret = getCachedFontData(getCachedFontPlatformData(font.fontDescription(), fontFamily, false));
}
FcPatternDestroy(match);
}
FcCharSetDestroy(cset);
return ret;
}
FontPlatformData* FontCache::getSimilarFontPlatformData(const Font& font)
{
return 0;
}
FontPlatformData* FontCache::getLastResortFallbackFont(const FontDescription& description)
{
static const AtomicString sansStr("Sans");
static const AtomicString serifStr("Serif");
static const AtomicString monospaceStr("Monospace");
FontPlatformData* fontPlatformData = 0;
switch (description.genericFamily()) {
case FontDescription::SerifFamily:
fontPlatformData = getCachedFontPlatformData(description, serifStr);
break;
case FontDescription::MonospaceFamily:
fontPlatformData = getCachedFontPlatformData(description, monospaceStr);
break;
case FontDescription::SansSerifFamily:
default:
fontPlatformData = getCachedFontPlatformData(description, sansStr);
break;
}
ASSERT(fontPlatformData);
return fontPlatformData;
}
void FontCache::getTraitsInFamily(const AtomicString& familyName,
Vector<unsigned>& traitsMasks)
{
notImplemented();
}
FontPlatformData* FontCache::createFontPlatformData(const FontDescription& fontDescription,
const AtomicString& family)
{
const char* name = 0;
CString s;
if (family.length() == 0) {
static const struct {
FontDescription::GenericFamilyType mType;
const char* mName;
} fontDescriptions[] = {
{ FontDescription::SerifFamily, "serif" },
{ FontDescription::SansSerifFamily, "sans-serif" },
{ FontDescription::MonospaceFamily, "monospace" },
{ FontDescription::CursiveFamily, "cursive" },
{ FontDescription::FantasyFamily, "fantasy" }
};
FontDescription::GenericFamilyType type = fontDescription.genericFamily();
for (unsigned i = 0; i < SK_ARRAY_COUNT(fontDescriptions); i++) {
if (type == fontDescriptions[i].mType) {
name = fontDescriptions[i].mName;
break;
}
}
// if we fall out of the loop, it's ok for name to still be 0
}
else { // convert the name to utf8
s = family.string().utf8();
name = s.data();
}
int style = SkTypeface::kNormal;
if (fontDescription.weight() >= FontWeightBold)
style |= SkTypeface::kBold;
if (fontDescription.italic())
style |= SkTypeface::kItalic;
// FIXME: This #ifdef can go away once we're firmly using the new Skia.
// During the transition, this makes the code compatible with both versions.
#ifdef SK_USE_OLD_255_TO_256
SkTypeface* tf = SkTypeface::CreateFromName(name, static_cast<SkTypeface::Style>(style));
#else
SkTypeface* tf = SkTypeface::Create(name, static_cast<SkTypeface::Style>(style));
#endif
if (!tf)
return 0;
FontPlatformData* result =
new FontPlatformData(tf,
fontDescription.computedSize(),
(style & SkTypeface::kBold) && !tf->isBold(),
(style & SkTypeface::kItalic) && !tf->isItalic());
tf->unref();
return result;
}
} // namespace WebCore
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