qquickpixmapcache.cpp File Reference

(f8f42c929735dfb5a8f3202d4a4f3bf3f3d31d9a)

#include <QtQuick/private/qquickpixmapcache_p.h>
#include <QtQuick/private/qquickimageprovider_p.h>
#include <QtQuick/private/qquickprofiler_p.h>
#include <QtQuick/private/qsgcontext_p.h>
#include <QtQuick/private/qsgrenderer_p.h>
#include <QtQuick/private/qsgtexturereader_p.h>
#include <QtQuick/qquickwindow.h>
#include <QtGui/private/qguiapplication_p.h>
#include <QtGui/private/qimage_p.h>
#include <QtGui/qpa/qplatformintegration.h>
#include <QtGui/qimagereader.h>
#include <QtGui/qpixmapcache.h>
#include <QtQml/private/qqmlglobal_p.h>
#include <QtQml/private/qqmlengine_p.h>
#include <QtQml/qqmlfile.h>
#include <QtCore/private/qobject_p.h>
#include <QtCore/qcoreapplication.h>
#include <QtCore/qhash.h>
#include <QtCore/qfile.h>
#include <QtCore/qthread.h>
#include <QtCore/qmutex.h>
#include <QtCore/qbuffer.h>
#include <QtCore/qdebug.h>
#include <QtCore/qmetaobject.h>
#include <QtCore/qscopeguard.h>
#include <private/qdebug_p.h>
#include <qquickpixmapcache.moc>
#include "moc_qquickpixmapcache_p.cpp"

Include dependency graph for qquickpixmapcache.cpp:

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Classes
class	QQuickPixmapReply
class	QQuickPixmapReply::Event
class	ReaderThreadExecutionEnforcer
class	QQuickPixmapReader
class	QQuickPixmapData
class	BackendSupport
struct	QQuickPixmapNull

Macros
#define	IMAGEREQUEST_MAX_NETWORK_REQUEST_COUNT   8
#define	CACHE_EXPIRE_TIME   30
#define	CACHE_REMOVAL_FRACTION   4
#define	PIXMAP_PROFILE(Code)   Q_QUICK_PROFILE(QQuickProfiler::ProfilePixmapCache, Code)
#define	USE_THREADED_DOWNLOAD   0
#define	Q_THREAD_AFFINITY_MARKER(x)
#define	Q_ASSERT_CALLED_ON_VALID_THREAD(x)
#define	Q_DETACH_THREAD_AFFINITY_MARKER(x)
#define	PIXMAP_READER_LOCK()

Functions
static QString	imageProviderId (const QUrl &url)
static QString	imageId (const QUrl &url)
static void	maybeRemoveAlpha (QImage *image)
static bool	readImage (const QUrl &url, QIODevice *dev, QImage *image, QString *errorString, QSize *impsize, int *frameCount, const QRect &requestRegion, const QSize &requestSize, const QQuickImageProviderOptions &providerOptions, QQuickImageProviderOptions::AutoTransform *appliedTransform=nullptr, int frame=0, qreal devicePixelRatio=1.0)
static QStringList	fromLatin1List (const QList< QByteArray > &list)
	Q_GLOBAL_STATIC (BackendSupport, backendSupport)
static QString	existingImageFileForPath (const QString &localFile)
bool	operator== (const QQuickPixmapKey &lhs, const QQuickPixmapKey &rhs)
size_t	qHash (const QQuickPixmapKey &key, size_t seed) noexcept
QDebug	operator<< (QDebug debug, const QQuickPixmapKey &key)
static QQuickPixmapData *	createPixmapDataSync (QQmlEngine *engine, const QUrl &url, const QRect &requestRegion, const QSize &requestSize, const QQuickImageProviderOptions &providerOptions, int frame, bool *ok, qreal devicePixelRatio)
	Q_GLOBAL_STATIC (QQuickPixmapNull, nullPixmap)

Variables
static int	cache_limit = 2048 * 1024

Macro Definition Documentation

CACHE_EXPIRE_TIME

#define CACHE_EXPIRE_TIME   30

Definition at line 44 of file qquickpixmapcache.cpp.

Referenced by QQuickPixmapCache::unreferencePixmap().

CACHE_REMOVAL_FRACTION

#define CACHE_REMOVAL_FRACTION   4

Definition at line 47 of file qquickpixmapcache.cpp.

Referenced by QQuickPixmapCache::timerEvent().

IMAGEREQUEST_MAX_NETWORK_REQUEST_COUNT

#define IMAGEREQUEST_MAX_NETWORK_REQUEST_COUNT   8

Definition at line 41 of file qquickpixmapcache.cpp.

PIXMAP_PROFILE

#define PIXMAP_PROFILE

(

Code

)

Q_QUICK_PROFILE(QQuickProfiler::ProfilePixmapCache, Code)

Definition at line 49 of file qquickpixmapcache.cpp.

Referenced by QQuickPixmapData::addref(), QQuickPixmapData::addToCache(), QQuickPixmapReader::cancel(), QQuickPixmapReply::event(), QQuickPixmap::load(), QQuickPixmapData::release(), and QQuickPixmapData::removeFromCache().

PIXMAP_READER_LOCK

#define PIXMAP_READER_LOCK

(

)

Definition at line 295 of file qquickpixmapcache.cpp.

Referenced by QQuickPixmapReader::~QQuickPixmapReader(), QQuickPixmapReader::cancel(), QQuickPixmapReader::run(), and QQuickPixmapReader::startJob().

Q_ASSERT_CALLED_ON_VALID_THREAD

#define Q_ASSERT_CALLED_ON_VALID_THREAD

(

x

)

Definition at line 95 of file qquickpixmapcache.cpp.

Referenced by QQuickPixmapReader::~QQuickPixmapReader(), and QQuickPixmapReader::run().

Q_DETACH_THREAD_AFFINITY_MARKER

#define Q_DETACH_THREAD_AFFINITY_MARKER

(

x

)

Definition at line 96 of file qquickpixmapcache.cpp.

Referenced by QQuickPixmapReader::QQuickPixmapReader().

Q_THREAD_AFFINITY_MARKER

#define Q_THREAD_AFFINITY_MARKER

(

x

)

Definition at line 94 of file qquickpixmapcache.cpp.

USE_THREADED_DOWNLOAD

#define USE_THREADED_DOWNLOAD   0

Definition at line 54 of file qquickpixmapcache.cpp.

Function Documentation

createPixmapDataSync()

static QQuickPixmapData * createPixmapDataSync ( QQmlEngine * engine, const QUrl & url, const QRect & requestRegion, const QSize & requestSize, const QQuickImageProviderOptions & providerOptions, int frame, bool * ok, qreal devicePixelRatio )

static

Definition at line 1525 of file qquickpixmapcache.cpp.

References arg, QQuickImageProviderOptions::autoTransform(), QQuickImageProviderWithOptions::checkedCast(), engine, existingImageFileForPath(), factory, frame, QString::fromLatin1(), QQmlEnginePrivate::get(), QQmlImageProviderBase::Image, imageId(), QQmlEnginePrivate::imageProvider(), imageProviderId(), QQmlImageProviderBase::ImageResponse, QQmlImageProviderBase::Invalid, ok, pixmap, QQmlImageProviderBase::Pixmap, Q_ASSERT, readImage(), QIODeviceBase::ReadOnly, QUrl::scheme(), QQmlImageProviderBase::Texture, QQuickTextureFactory::textureFactoryForImage(), QUrl::toString(), url, QQmlFile::urlToLocalFileOrQrc(), and QQuickImageProviderOptions::UsePluginDefaultTransform.

Referenced by QQuickPixmap::load().

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existingImageFileForPath()

static QString existingImageFileForPath ( const QString & localFile )

static

Definition at line 560 of file qquickpixmapcache.cpp.

References QFileInfo::exists(), and QStringLiteral.

Referenced by createPixmapDataSync().

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fromLatin1List()

static QStringList fromLatin1List ( const QList< QByteArray > & list )

static

Definition at line 531 of file qquickpixmapcache.cpp.

References QString::fromLatin1(), item, list, and QList< T >::size().

Referenced by BackendSupport::BackendSupport().

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imageId()

static QString imageId ( const QUrl & url )

inlinestatic

Definition at line 114 of file qquickpixmapcache.cpp.

References QString::mid(), QUrl::RemoveAuthority, QUrl::RemoveScheme, QUrl::toString(), and url.

Referenced by createPixmapDataSync().

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imageProviderId()

static QString imageProviderId ( const QUrl & url )

inlinestatic

Definition at line 109 of file qquickpixmapcache.cpp.

References QUrl::host(), and url.

Referenced by createPixmapDataSync(), and QQuickPixmap::load().

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maybeRemoveAlpha()

static void maybeRemoveAlpha ( QImage * image )

static

Definition at line 448 of file qquickpixmapcache.cpp.

References Qt::AutoColor, QImage::Format_A2BGR30_Premultiplied, QImage::Format_A2RGB30_Premultiplied, QImage::Format_BGR30, QImage::Format_RGB30, QImage::Format_RGB32, QImage::Format_RGBA8888, QImage::Format_RGBA8888_Premultiplied, and QImage::Format_RGBX8888.

Referenced by readImage().

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operator<<()

QDebug operator<< ( QDebug debug, const QQuickPixmapKey & key )

inline

Definition at line 1186 of file qquickpixmapcache.cpp.

References debug, QtDebugUtils::formatQRect(), and QtDebugUtils::formatQSize().

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operator==()

bool operator== ( const QQuickPixmapKey & lhs, const QQuickPixmapKey & rhs )

inline

Definition at line 1171 of file qquickpixmapcache.cpp.

References QQuickPixmapKey::frame, QQuickPixmapKey::options, QQuickPixmapKey::region, QQuickPixmapKey::size, and QQuickPixmapKey::url.

Q_GLOBAL_STATIC() [1/2]

Q_GLOBAL_STATIC	(	BackendSupport	,
		backendSupport	)

Q_GLOBAL_STATIC() [2/2]

Q_GLOBAL_STATIC	(	QQuickPixmapNull	,
		nullPixmap	)

qHash()

size_t qHash ( const QQuickPixmapKey & key, size_t seed )

inlinenoexcept

Definition at line 1180 of file qquickpixmapcache.cpp.

References qHashMulti(), and seed.

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readImage()

static bool readImage ( const QUrl & url, QIODevice * dev, QImage * image, QString * errorString, QSize * impsize, int * frameCount, const QRect & requestRegion, const QSize & requestSize, const QQuickImageProviderOptions & providerOptions, QQuickImageProviderOptions::AutoTransform * appliedTransform = nullptr, int frame = 0, qreal devicePixelRatio = 1.0 )

static

Definition at line 483 of file qquickpixmapcache.cpp.

References QQuickImageProviderOptions::ApplyTransform, QQuickImageProviderOptions::autoTransform(), QQuickImageProviderOptions::DoNotApplyTransform, frame, QRect::isNull(), QColorSpace::isValid(), QQuickImageProviderWithOptions::loadSize(), maybeRemoveAlpha(), QQuickPixmapReply::providerOptions, qCDebug, QQuickPixmapReply::requestRegion, QQuickPixmapReply::requestSize, QQuickImageProviderOptions::targetColorSpace(), QUrl::toString(), QQuickPixmapReply::url, and QQuickImageProviderOptions::UsePluginDefaultTransform.

Referenced by createPixmapDataSync().

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Variable Documentation

cache_limit

int cache_limit = 2048 * 1024

static

The maximum currently-unused image data that can be stored for potential later reuse, in bytes. See QQuickPixmapCache::shrinkCache()

Definition at line 107 of file qquickpixmapcache.cpp.