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/*
Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
Copyright (C) 2008 Holger Hans Peter Freyther
Copyright (C) 2009 Torch Mobile Inc. http://www.torchmobile.com/
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.
This class provides all functionality needed for loading images, style sheets and html
pages from the web. It has a memory cache for these objects.
*/
#ifndef FontPlatformData_h
#define FontPlatformData_h
#include "FontDescription.h"
#include "TextFlags.h"
#include <QFont>
#include <QHash>
#include <QRawFont>
#include <wtf/Forward.h>
#include <wtf/RefCounted.h>
namespace WebCore {
class SharedBuffer;
class FontPlatformDataPrivate : public RefCounted<FontPlatformDataPrivate> {
WTF_MAKE_NONCOPYABLE(FontPlatformDataPrivate); WTF_MAKE_FAST_ALLOCATED;
public:
FontPlatformDataPrivate()
: size(0)
, bold(false)
, oblique(false)
, isDeletedValue(false)
{ }
FontPlatformDataPrivate(const float size, const bool bold, const bool oblique)
: size(size)
, bold(bold)
, oblique(oblique)
, isDeletedValue(false)
{
// This is necessary for SVG Fonts, which are only supported when using QRawFont.
// It is used to construct the appropriate platform data to use as a fallback.
QFont font;
font.setBold(bold);
font.setItalic(oblique);
rawFont = QRawFont::fromFont(font, QFontDatabase::Any);
rawFont.setPixelSize(size);
}
FontPlatformDataPrivate(const QRawFont& rawFont)
: rawFont(rawFont)
, size(rawFont.pixelSize())
, bold(rawFont.weight() >= QFont::Bold)
, oblique(false)
, isDeletedValue(false)
{ }
FontPlatformDataPrivate(WTF::HashTableDeletedValueType)
: isDeletedValue(true)
{ }
QRawFont rawFont;
float size;
bool bold : 1;
bool oblique : 1;
bool isDeletedValue : 1;
};
class FontPlatformData {
WTF_MAKE_FAST_ALLOCATED;
public:
FontPlatformData(float size, bool bold, bool oblique);
FontPlatformData(const FontDescription&, const AtomicString& familyName, int wordSpacing = 0, int letterSpacing = 0);
FontPlatformData(const FontPlatformData&, float size);
FontPlatformData(const QRawFont& rawFont)
: m_data(adoptRef(new FontPlatformDataPrivate(rawFont)))
{ }
FontPlatformData(WTF::HashTableDeletedValueType)
: m_data(adoptRef(new FontPlatformDataPrivate()))
{
m_data->isDeletedValue = true;
}
bool operator==(const FontPlatformData&) const;
bool isHashTableDeletedValue() const
{
return m_data && m_data->isDeletedValue;
}
QRawFont rawFont() const
{
Q_ASSERT(!isHashTableDeletedValue());
if (!m_data)
return QRawFont();
return m_data->rawFont;
}
float size() const
{
Q_ASSERT(!isHashTableDeletedValue());
if (!m_data)
return 0;
return m_data->size;
}
FontOrientation orientation() const { return Horizontal; } // FIXME: Implement.
void setOrientation(FontOrientation) { } // FIXME: Implement.
PassRefPtr<SharedBuffer> openTypeTable(uint32_t table) const;
unsigned hash() const;
#ifndef NDEBUG
String description() const;
#endif
private:
RefPtr<FontPlatformDataPrivate> m_data;
};
} // namespace WebCore
#endif // FontPlatformData_h
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