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/*
Copyright (C) 2008 Holger Hans Peter Freyther
Copyright (C) 2009 Torch Mobile Inc. http://www.torchmobile.com/
Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies)
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#include "config.h"
#include "FontPlatformData.h"
#include "PlatformString.h"
namespace WebCore {
static inline QFont::Weight toQFontWeight(FontWeight fontWeight)
{
switch (fontWeight) {
case FontWeight100:
case FontWeight200:
return QFont::Light; // QFont::Light == Weight of 25
case FontWeight600:
return QFont::DemiBold; // QFont::DemiBold == Weight of 63
case FontWeight700:
case FontWeight800:
return QFont::Bold; // QFont::Bold == Weight of 75
case FontWeight900:
return QFont::Black; // QFont::Black == Weight of 87
case FontWeight300:
case FontWeight400:
case FontWeight500:
default:
return QFont::Normal; // QFont::Normal == Weight of 50
}
}
static inline bool isEmptyValue(const float size, const bool bold, const bool oblique)
{
// this is the empty value by definition of the trait FontDataCacheKeyTraits
return !bold && !oblique && size == 0.f;
}
FontPlatformData::FontPlatformData(float size, bool bold, bool oblique)
{
if (!isEmptyValue(size, bold, oblique))
m_data = adoptRef(new FontPlatformDataPrivate(size, bold, oblique));
}
FontPlatformData::FontPlatformData(const FontDescription& description, const AtomicString& familyName, int wordSpacing, int letterSpacing)
: m_data(adoptRef(new FontPlatformDataPrivate()))
{
QFont& font = m_data->font;
int requestedSize = qRound(description.computedPixelSize());
font.setFamily(familyName);
font.setPixelSize(qRound(requestedSize));
font.setItalic(description.italic());
font.setWeight(toQFontWeight(description.weight()));
font.setWordSpacing(wordSpacing);
font.setLetterSpacing(QFont::AbsoluteSpacing, letterSpacing);
const bool smallCaps = description.smallCaps();
font.setCapitalization(smallCaps ? QFont::SmallCaps : QFont::MixedCase);
font.setStyleStrategy(QFont::ForceIntegerMetrics);
m_data->bold = font.bold();
// WebKit allows font size zero but QFont does not. We will return
// m_data->size if a font size of zero is requested and pixelSize()
// otherwise.
m_data->size = (!requestedSize) ? requestedSize : font.pixelSize();
}
bool FontPlatformData::operator==(const FontPlatformData& other) const
{
if (m_data == other.m_data)
return true;
if (!m_data || !other.m_data || m_data->isDeletedValue || other.m_data->isDeletedValue)
return false;
const bool equals = (m_data->size == other.m_data->size
&& m_data->bold == other.m_data->bold
&& m_data->oblique == other.m_data->oblique
&& m_data->font == other.m_data->font);
return equals;
}
unsigned FontPlatformData::hash() const
{
if (!m_data)
return 0;
if (m_data->isDeletedValue)
return 1;
return qHash(m_data->font.toString())
^ qHash(*reinterpret_cast<quint32*>(&m_data->size))
^ qHash(m_data->bold)
^ qHash(m_data->oblique);
}
#ifndef NDEBUG
String FontPlatformData::description() const
{
return String();
}
#endif
}
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