Job implementation that renders all layers in parallel. More...

#include <qgsmaprendererparalleljob.h>

Inheritance diagram for QgsMapRendererParallelJob:

Public Member Functions
	QgsMapRendererParallelJob (const QgsMapSettings &settings)

	~QgsMapRendererParallelJob ()

virtual void	cancel () override
	Stop the rendering job - does not return until the job has terminated. More...

virtual bool	isActive () const override
	Tell whether the rendering job is currently running in background. More...

virtual QImage	renderedImage () override
	Get a preview/resulting image. More...

virtual void	start () override
	Start the rendering job and immediately return. More...

virtual QgsLabelingResults *	takeLabelingResults () override
	Get pointer to internal labeling engine (in order to get access to the results) More...

virtual void	waitForFinished () override
	Block until the job has finished. More...

Public Member Functions inherited from QgsMapRendererQImageJob
	QgsMapRendererQImageJob (const QgsMapSettings &settings)

Public Member Functions inherited from QgsMapRendererJob
	QgsMapRendererJob (const QgsMapSettings &settings)

virtual	~QgsMapRendererJob ()

Errors	errors () const
	List of errors that happened during the rendering job - available when the rendering has been finished. More...

const QgsMapSettings &	mapSettings () const
	Return map settings with which this job was started. More...

int	renderingTime () const
	Find out how log it took to finish the job (in miliseconds) More...

void	setCache (QgsMapRendererCache *cache)
	Assign a cache to be used for reading and storing rendered images of individual layers. More...

void	setRequestedGeometryCacheForLayers (const QStringList &layerIds)
	Set which vector layers should be cached while rendering. More...

Public Member Functions inherited from QObject
	QObject (QObject *parent)

	QObject (QObject parent, const char name)

virtual	~QObject ()

bool	blockSignals (bool block)

QObject *	child (const char objName, const char inheritsClass, bool recursiveSearch) const

const QObjectList &	children () const

const char *	className () const

bool	connect (const QObject sender, const char signal, const char *method, Qt::ConnectionType type) const

void	deleteLater ()

void	destroyed (QObject *obj)

bool	disconnect (const QObject receiver, const char method)

bool	disconnect (const char signal, const QObject receiver, const char *method)

void	dumpObjectInfo ()

void	dumpObjectTree ()

QList< QByteArray >	dynamicPropertyNames () const

virtual bool	event (QEvent *e)

virtual bool	eventFilter (QObject watched, QEvent event)

T	findChild (const QString &name) const

QList< T >	findChildren (const QRegExp &regExp) const

QList< T >	findChildren (const QString &name) const

bool	inherits (const char *className) const

void	insertChild (QObject *object)

void	installEventFilter (QObject *filterObj)

bool	isA (const char *className) const

bool	isWidgetType () const

void	killTimer (int id)

virtual const QMetaObject *	metaObject () const

void	moveToThread (QThread *targetThread)

const char *	name () const

const char *	name (const char *defaultName) const

QString	objectName () const

QObject *	parent () const

QVariant	property (const char *name) const

void	removeChild (QObject *object)

void	removeEventFilter (QObject *obj)

void	setName (const char *name)

void	setObjectName (const QString &name)

void	setParent (QObject *parent)

bool	setProperty (const char *name, const QVariant &value)

bool	signalsBlocked () const

int	startTimer (int interval)

QThread *	thread () const

Protected Types
enum	{ Idle, RenderingLayers, RenderingLabels }

Protected Slots
void	renderingFinished ()
	all rendering is finished, including labeling More...

void	renderLayersFinished ()
	layers are rendered, labeling is still pending More...

Static Protected Member Functions
static void	renderLabelsStatic (QgsMapRendererParallelJob *self)

static void	renderLayerStatic (LayerRenderJob &job)

Static Protected Member Functions inherited from QgsMapRendererJob
static QImage	composeImage (const QgsMapSettings &settings, const LayerRenderJobs &jobs)

static void	drawLabeling (const QgsMapSettings &settings, QgsRenderContext &renderContext, QgsPalLabeling labelingEngine, QPainter painter)

static void	drawNewLabeling (const QgsMapSettings &settings, QgsRenderContext &renderContext, QgsPalLabeling *labelingEngine)

static void	drawOldLabeling (const QgsMapSettings &settings, QgsRenderContext &renderContext)

static bool	reprojectToLayerExtent (const QgsCoordinateTransform *ct, bool layerCrsGeographic, QgsRectangle &extent, QgsRectangle &r2)
	Convenience function to project an extent into the layer source CRS, but also split it into two extents if it crosses the +/- 180 degree line. More...

Static Protected Member Functions inherited from QObject
QByteArray	normalizeSignalSlot (const char *signalSlot)

Protected Attributes
QImage	mFinalImage

QFuture< void >	mFuture

QFutureWatcher< void >	mFutureWatcher

QgsPalLabeling *	mLabelingEngine

QFuture< void >	mLabelingFuture

QFutureWatcher< void >	mLabelingFutureWatcher

QgsRenderContext	mLabelingRenderContext

LayerRenderJobs	mLayerJobs

enum QgsMapRendererParallelJob:: { ... }	mStatus

Protected Attributes inherited from QgsMapRendererJob
QgsMapRendererCache *	mCache

Errors	mErrors

QMap< QString, QgsGeometryCache >	mGeometryCaches
	map of geometry caches More...

QTime	mRenderingStart

int	mRenderingTime

QStringList	mRequestedGeomCacheForLayers
	list of layer IDs for which the geometry cache should be updated More...

QgsMapSettings	mSettings

Additional Inherited Members
Public Types inherited from QgsMapRendererJob
typedef QList< Error >	Errors

Signals inherited from QgsMapRendererJob
void	finished ()
	emitted when asynchronous rendering is finished (or canceled). More...

Static Public Member Functions inherited from QObject
bool	connect (const QObject sender, const char signal, const QObject receiver, const char method, Qt::ConnectionType type)

bool	connect (const QObject sender, const QMetaMethod &signal, const QObject receiver, const QMetaMethod &method, Qt::ConnectionType type)

bool	disconnect (const QObject sender, const char signal, const QObject receiver, const char method)

bool	disconnect (const QObject sender, const QMetaMethod &signal, const QObject receiver, const QMetaMethod &method)

QString	tr (const char sourceText, const char disambiguation, int n)

QString	trUtf8 (const char sourceText, const char disambiguation, int n)

Protected Member Functions inherited from QgsMapRendererJob
void	cleanupJobs (LayerRenderJobs &jobs)

bool	needTemporaryImage (QgsMapLayer *ml)

LayerRenderJobs	prepareJobs (QPainter painter, QgsPalLabeling labelingEngine)

void	updateLayerGeometryCaches ()
	called when rendering has finished to update all layers' geometry caches More...

Protected Member Functions inherited from QObject
bool	checkConnectArgs (const char signal, const QObject object, const char *method)

virtual void	childEvent (QChildEvent *event)

virtual void	connectNotify (const char *signal)

virtual void	customEvent (QEvent *event)

virtual void	disconnectNotify (const char *signal)

int	receivers (const char *signal) const

QObject *	sender () const

int	senderSignalIndex () const

virtual void	timerEvent (QTimerEvent *event)

Properties inherited from QObject
	objectName

Detailed Description

Job implementation that renders all layers in parallel.

The resulting map image can be retrieved with renderedImage() function. It is safe to call that function while rendering is active to see preview of the map.

Note: added in 2.4

Definition at line 28 of file qgsmaprendererparalleljob.h.

Member Enumeration Documentation

anonymous enum

protected

Enumerator
Idle
RenderingLayers
RenderingLabels

Definition at line 60 of file qgsmaprendererparalleljob.h.

Constructor & Destructor Documentation

QgsMapRendererParallelJob::QgsMapRendererParallelJob ( const QgsMapSettings & settings )

Definition at line 25 of file qgsmaprendererparalleljob.cpp.

QgsMapRendererParallelJob::~QgsMapRendererParallelJob ( )

Definition at line 32 of file qgsmaprendererparalleljob.cpp.

Member Function Documentation

void QgsMapRendererParallelJob::cancel ( )

overridevirtual

Stop the rendering job - does not return until the job has terminated.

Does nothing if the rendering is not active.

Implements QgsMapRendererJob.

Definition at line 75 of file qgsmaprendererparalleljob.cpp.

bool QgsMapRendererParallelJob::isActive ( ) const

overridevirtual

Tell whether the rendering job is currently running in background.

Implements QgsMapRendererJob.

Definition at line 145 of file qgsmaprendererparalleljob.cpp.

QImage QgsMapRendererParallelJob::renderedImage ( )

overridevirtual

Get a preview/resulting image.

Implements QgsMapRendererQImageJob.

Definition at line 155 of file qgsmaprendererparalleljob.cpp.

void QgsMapRendererParallelJob::renderingFinished ( )

protectedslot

all rendering is finished, including labeling

Definition at line 190 of file qgsmaprendererparalleljob.cpp.

void QgsMapRendererParallelJob::renderLabelsStatic ( QgsMapRendererParallelJob * self )

staticprotected

Definition at line 236 of file qgsmaprendererparalleljob.cpp.

void QgsMapRendererParallelJob::renderLayersFinished ( )

protectedslot

layers are rendered, labeling is still pending

Definition at line 163 of file qgsmaprendererparalleljob.cpp.

void QgsMapRendererParallelJob::renderLayerStatic ( LayerRenderJob & job )

staticprotected

Definition at line 201 of file qgsmaprendererparalleljob.cpp.

void QgsMapRendererParallelJob::start ( )

overridevirtual

Start the rendering job and immediately return.

Does nothing if the rendering is already in progress.

Implements QgsMapRendererJob.

Definition at line 43 of file qgsmaprendererparalleljob.cpp.

QgsLabelingResults * QgsMapRendererParallelJob::takeLabelingResults ( )

overridevirtual

Get pointer to internal labeling engine (in order to get access to the results)

Implements QgsMapRendererJob.

Definition at line 150 of file qgsmaprendererparalleljob.cpp.

void QgsMapRendererParallelJob::waitForFinished ( )

overridevirtual

Block until the job has finished.

Implements QgsMapRendererJob.

Definition at line 109 of file qgsmaprendererparalleljob.cpp.

Member Data Documentation

QImage QgsMapRendererParallelJob::mFinalImage

protected

Definition at line 58 of file qgsmaprendererparalleljob.h.

QFuture<void> QgsMapRendererParallelJob::mFuture

protected

Definition at line 62 of file qgsmaprendererparalleljob.h.

QFutureWatcher<void> QgsMapRendererParallelJob::mFutureWatcher

protected

Definition at line 63 of file qgsmaprendererparalleljob.h.

QgsPalLabeling* QgsMapRendererParallelJob::mLabelingEngine

protected

Definition at line 67 of file qgsmaprendererparalleljob.h.

QFuture<void> QgsMapRendererParallelJob::mLabelingFuture

protected

Definition at line 69 of file qgsmaprendererparalleljob.h.

QFutureWatcher<void> QgsMapRendererParallelJob::mLabelingFutureWatcher

protected

Definition at line 70 of file qgsmaprendererparalleljob.h.

QgsRenderContext QgsMapRendererParallelJob::mLabelingRenderContext

protected

Definition at line 68 of file qgsmaprendererparalleljob.h.

LayerRenderJobs QgsMapRendererParallelJob::mLayerJobs

protected

Definition at line 65 of file qgsmaprendererparalleljob.h.

enum { ... } QgsMapRendererParallelJob::mStatus

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

/tmp/buildd/qgis-2.10.1+git20150822+dd4475c+20trusty/src/core/qgsmaprendererparalleljob.h
/tmp/buildd/qgis-2.10.1+git20150822+dd4475c+20trusty/src/core/qgsmaprendererparalleljob.cpp

Public Member Functions

Protected Types

Protected Slots

Static Protected Member Functions

Protected Attributes

Additional Inherited Members

Detailed Description

Member Enumeration Documentation

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation