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#ifndef QFONT_P_H
#define QFONT_P_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists for the convenience
// of internal files. This header file may change from version to version
// without notice, or even be removed.
//
// We mean it.
//
#include <QtGui/private/qtguiglobal_p.h>
#include "QtGui/qfont.h"
#include "QtCore/qmap.h"
#include "QtCore/qhash.h"
#include "QtCore/qobject.h"
#include "QtCore/qstringlist.h"
#include <QtGui/qfontdatabase.h>
#include "private/qfixed_p.h"
QT_BEGIN_NAMESPACE
// forwards
class QFontCache;
class QFontEngine;
struct QFontDef
{
inline QFontDef()
: pointSize(-1.0), pixelSize(-1),
styleStrategy(QFont::PreferDefault), styleHint(QFont::AnyStyle),
weight(50), fixedPitch(false), style(QFont::StyleNormal), stretch(QFont::AnyStretch),
hintingPreference(QFont::PreferDefaultHinting), ignorePitch(true),
fixedPitchComputed(0), reserved(0)
{
}
QString family;
QString styleName;
QStringList fallBackFamilies;
qreal pointSize;
qreal pixelSize;
uint styleStrategy : 16;
uint styleHint : 8;
uint weight : 7; // 0-99
uint fixedPitch : 1;
uint style : 2;
uint stretch : 12; // 0-4000
uint hintingPreference : 2;
uint ignorePitch : 1;
uint fixedPitchComputed : 1; // for Mac OS X only
int reserved : 14; // for future extensions
bool exactMatch(const QFontDef &other) const;
bool operator==(const QFontDef &other) const
{
return pixelSize == other.pixelSize
&& weight == other.weight
&& style == other.style
&& stretch == other.stretch
&& styleHint == other.styleHint
&& styleStrategy == other.styleStrategy
&& ignorePitch == other.ignorePitch && fixedPitch == other.fixedPitch
&& family == other.family
&& styleName == other.styleName
&& hintingPreference == other.hintingPreference
;
}
inline bool operator<(const QFontDef &other) const
{
if (pixelSize != other.pixelSize) return pixelSize < other.pixelSize;
if (weight != other.weight) return weight < other.weight;
if (style != other.style) return style < other.style;
if (stretch != other.stretch) return stretch < other.stretch;
if (styleHint != other.styleHint) return styleHint < other.styleHint;
if (styleStrategy != other.styleStrategy) return styleStrategy < other.styleStrategy;
if (family != other.family) return family < other.family;
if (styleName != other.styleName)
return styleName < other.styleName;
if (hintingPreference != other.hintingPreference) return hintingPreference < other.hintingPreference;
if (ignorePitch != other.ignorePitch) return ignorePitch < other.ignorePitch;
if (fixedPitch != other.fixedPitch) return fixedPitch < other.fixedPitch;
return false;
}
};
inline uint qHash(const QFontDef &fd, uint seed = 0) Q_DECL_NOTHROW
{
return qHash(qRound64(fd.pixelSize*10000)) // use only 4 fractional digits
^ qHash(fd.weight)
^ qHash(fd.style)
^ qHash(fd.stretch)
^ qHash(fd.styleHint)
^ qHash(fd.styleStrategy)
^ qHash(fd.ignorePitch)
^ qHash(fd.fixedPitch)
^ qHash(fd.family, seed)
^ qHash(fd.styleName)
^ qHash(fd.hintingPreference)
;
}
class QFontEngineData
{
public:
QFontEngineData();
~QFontEngineData();
QAtomicInt ref;
const int fontCacheId;
QFontEngine *engines[QChar::ScriptCount];
private:
Q_DISABLE_COPY(QFontEngineData)
};
class Q_GUI_EXPORT QFontPrivate
{
public:
QFontPrivate();
QFontPrivate(const QFontPrivate &other);
~QFontPrivate();
QFontEngine *engineForScript(int script) const;
void alterCharForCapitalization(QChar &c) const;
QAtomicInt ref;
QFontDef request;
mutable QFontEngineData *engineData;
int dpi;
int screen;
uint underline : 1;
uint overline : 1;
uint strikeOut : 1;
uint kerning : 1;
uint capital : 3;
bool letterSpacingIsAbsolute : 1;
QFixed letterSpacing;
QFixed wordSpacing;
mutable QFontPrivate *scFont;
QFont smallCapsFont() const { return QFont(smallCapsFontPrivate()); }
QFontPrivate *smallCapsFontPrivate() const;
static QFontPrivate *get(const QFont &font)
{
return font.d.data();
}
void resolve(uint mask, const QFontPrivate *other);
static void detachButKeepEngineData(QFont *font);
private:
QFontPrivate &operator=(const QFontPrivate &) { return *this; }
};
class Q_AUTOTEST_EXPORT QFontCache : public QObject
{
public:
// note: these static functions work on a per-thread basis
static QFontCache *instance();
static void cleanup();
QFontCache();
~QFontCache();
int id() const { return m_id; }
void clear();
struct Key {
Key() : script(0), multi(0), screen(0) { }
Key(const QFontDef &d, uchar c, bool m = 0, uchar s = 0)
: def(d), script(c), multi(m), screen(s) { }
QFontDef def;
uchar script;
uchar multi: 1;
uchar screen: 7;
inline bool operator<(const Key &other) const
{
if (script != other.script) return script < other.script;
if (screen != other.screen) return screen < other.screen;
if (multi != other.multi) return multi < other.multi;
if (multi && def.fallBackFamilies.size() != other.def.fallBackFamilies.size())
return def.fallBackFamilies.size() < other.def.fallBackFamilies.size();
return def < other.def;
}
inline bool operator==(const Key &other) const
{
return script == other.script
&& screen == other.screen
&& multi == other.multi
&& (!multi || def.fallBackFamilies == other.def.fallBackFamilies)
&& def == other.def;
}
};
// QFontEngineData cache
typedef QMap<QFontDef, QFontEngineData*> EngineDataCache;
EngineDataCache engineDataCache;
QFontEngineData *findEngineData(const QFontDef &def) const;
void insertEngineData(const QFontDef &def, QFontEngineData *engineData);
// QFontEngine cache
struct Engine {
Engine() : data(0), timestamp(0), hits(0) { }
Engine(QFontEngine *d) : data(d), timestamp(0), hits(0) { }
QFontEngine *data;
uint timestamp;
uint hits;
};
typedef QMap<Key,Engine> EngineCache;
EngineCache engineCache;
QHash<QFontEngine *, int> engineCacheCount;
QFontEngine *findEngine(const Key &key);
void updateHitCountAndTimeStamp(Engine &value);
void insertEngine(const Key &key, QFontEngine *engine, bool insertMulti = false);
private:
void increaseCost(uint cost);
void decreaseCost(uint cost);
void timerEvent(QTimerEvent *event) Q_DECL_OVERRIDE;
void decreaseCache();
static const uint min_cost;
uint total_cost, max_cost;
uint current_timestamp;
bool fast;
int timer_id;
const int m_id;
};
Q_GUI_EXPORT int qt_defaultDpiX();
Q_GUI_EXPORT int qt_defaultDpiY();
Q_GUI_EXPORT int qt_defaultDpi();
QT_END_NAMESPACE
#endif // QFONT_P_H