#include "config.h"
#include "FontCache.h"
#include "FontDescription.h"
#include "FontPlatformData.h"
#include "Font.h"
#include "PlatformString.h"
#include <utility>
#include <wtf/ListHashSet.h>
#include <wtf/StdLibExtras.h>
#include <wtf/text/StringHash.h>
#include <QFont>
#include <QFontDatabase>
#if HAVE(QRAWFONT)
#include <QTextLayout>
#endif
using namespace WTF;
namespace WebCore {
void FontCache::platformInit()
{
}
#if HAVE(QRAWFONT)
static QRawFont rawFontForCharacters(const QString& string, const QRawFont& font)
{
QTextLayout layout(string);
layout.setRawFont(font);
layout.beginLayout();
layout.createLine();
layout.endLayout();
QList<QGlyphRun> glyphList = layout.glyphRuns();
ASSERT(glyphList.size() <= 1);
if (!glyphList.size())
return QRawFont();
const QGlyphRun& glyphs(glyphList.at(0));
return glyphs.rawFont();
}
#endif // HAVE(QRAWFONT)
const SimpleFontData* FontCache::getFontDataForCharacters(const Font& font, const UChar* characters, int length)
{
#if HAVE(QRAWFONT)
QString qstring = QString::fromRawData(reinterpret_cast<const QChar*>(characters), length);
QRawFont computedFont = rawFontForCharacters(qstring, font.rawFont());
if (!computedFont.isValid())
return 0;
FontPlatformData alternateFont(computedFont);
return getCachedFontData(&alternateFont, DoNotRetain);
#else
Q_UNUSED(font);
Q_UNUSED(characters);
Q_UNUSED(length);
return 0;
#endif
}
SimpleFontData* FontCache::getSimilarFontPlatformData(const Font& font)
{
return 0;
}
SimpleFontData* FontCache::getLastResortFallbackFont(const FontDescription& fontDescription, ShouldRetain shouldRetain)
{
const AtomicString fallbackFamily = QFont(fontDescription.family().family()).lastResortFamily();
return getCachedFontData(new FontPlatformData(fontDescription, fallbackFamily), shouldRetain);
}
void FontCache::getTraitsInFamily(const AtomicString&, Vector<unsigned>&)
{
}
FontPlatformData* FontCache::createFontPlatformData(const FontDescription& fontDescription, const AtomicString& familyName)
{
QFontDatabase db;
if (!db.hasFamily(familyName))
return 0;
return new FontPlatformData(fontDescription, familyName);
}
}