QGradientCache Class Reference

Collaboration diagram for QGradientCache:

Classes
struct	CacheInfo

Public Types
using	QGradientColorTableHash = QMultiHash< quint64, std::shared_ptr< const CacheInfo > >

Public Member Functions
std::shared_ptr< const CacheInfo >	getBuffer (const QGradient &gradient, int opacity)
int	paletteSize () const

Protected Member Functions
int	maxCacheSize () const
void	generateGradientColorTable (const QGradient &g, QRgba64 *colorTable, int size, int opacity) const
std::shared_ptr< const CacheInfo >	addCacheElement (quint64 hash_val, const QGradient &gradient, int opacity)

Protected Attributes
QGradientColorTableHash	cache
QMutex	mutex

Detailed Description

Definition at line 4199 of file qpaintengine_raster.cpp.

Member Typedef Documentation

QGradientColorTableHash

using QGradientCache::QGradientColorTableHash = QMultiHash<quint64, std::shared_ptr<const CacheInfo> >

Definition at line 4213 of file qpaintengine_raster.cpp.

Member Function Documentation

addCacheElement()

std::shared_ptr< const CacheInfo > QGradientCache::addCacheElement ( quint64  hash_val, const QGradient &  gradient, int  opacity  )

inlineprotected

Definition at line 4245 of file qpaintengine_raster.cpp.

References QMultiHash< Key, T >::begin(), QRandomGenerator::bounded(), cache, QMultiHash< Key, T >::erase(), generateGradientColorTable(), QRandomGenerator::global(), GRADIENT_STOPTABLE_SIZE, i, QMultiHash< Key, T >::insert(), QGradient::interpolationMode(), maxCacheSize(), paletteSize(), QMultiHash< Key, T >::size(), and QGradient::stops().

Referenced by getBuffer().

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generateGradientColorTable()

void QGradientCache::generateGradientColorTable ( const QGradient &  g, QRgba64 *  colorTable, int  size, int  opacity  ) const

inlineprotected

Definition at line 4261 of file qpaintengine_raster.cpp.

References QRgba64::alpha(), QRgba64::blue(), QGradient::ColorInterpolation, combineAlpha256(), dist(), QList< T >::first(), GRADIENT_STOPTABLE_SIZE, QRgba64::green(), i, interpolate256(), QGradient::interpolationMode(), pos, Q_ASSERT, qMin(), qPremultiply(), qRgba64(), qRound(), qSwap(), QRgba64::red(), QList< T >::size(), and QGradient::stops().

Referenced by addCacheElement().

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getBuffer()

std::shared_ptr< const CacheInfo > QGradientCache::getBuffer ( const QGradient &  gradient, int  opacity  )

inline

Definition at line 4215 of file qpaintengine_raster.cpp.

References addCacheElement(), cache, QMultiHash< quint64, std::shared_ptr< const CacheInfo > >::const_iterator, QMultiHash< Key, T >::constEnd(), QMultiHash< Key, T >::constFind(), i, QGradient::interpolationMode(), it, lock, mutex, QList< T >::size(), and QGradient::stops().

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maxCacheSize()

int QGradientCache::maxCacheSize ( ) const

inlineprotected

Definition at line 4241 of file qpaintengine_raster.cpp.

Referenced by addCacheElement().

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paletteSize()

int QGradientCache::paletteSize ( ) const

inline

Definition at line 4239 of file qpaintengine_raster.cpp.

References GRADIENT_STOPTABLE_SIZE.

Referenced by addCacheElement().

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Member Data Documentation

cache

QGradientColorTableHash QGradientCache::cache

protected

Definition at line 4257 of file qpaintengine_raster.cpp.

Referenced by addCacheElement(), and getBuffer().

mutex

QMutex QGradientCache::mutex

protected

Definition at line 4258 of file qpaintengine_raster.cpp.

Referenced by getBuffer().

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The documentation for this class was generated from the following file:

• qtbase/src/gui/painting/qpaintengine_raster.cpp