QGIS API Documentation
2.4.0-Chugiak
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Job implementation that renders everything sequentially in one thread. More...
#include <qgsmaprenderersequentialjob.h>
Public Slots | |
void | internalFinished () |
Public Member Functions | |
QgsMapRendererSequentialJob (const QgsMapSettings &settings) | |
~QgsMapRendererSequentialJob () | |
virtual void | start () |
Start the rendering job and immediately return. More... | |
virtual void | cancel () |
Stop the rendering job - does not return until the job has terminated. More... | |
virtual void | waitForFinished () |
Block until the job has finished. More... | |
virtual bool | isActive () const |
Tell whether the rendering job is currently running in background. More... | |
virtual QgsLabelingResults * | takeLabelingResults () |
Get pointer to internal labeling engine (in order to get access to the results) More... | |
virtual QImage | renderedImage () |
Get a preview/resulting image. 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... | |
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... | |
int | renderingTime () const |
Find out how log it took to finish the job (in miliseconds) More... | |
Protected Attributes | |
QgsMapRendererCustomPainterJob * | mInternalJob |
QImage | mImage |
QPainter * | mPainter |
QgsLabelingResults * | mLabelingResults |
Protected Attributes inherited from QgsMapRendererJob | |
QgsMapSettings | mSettings |
Errors | mErrors |
QgsMapRendererCache * | mCache |
QStringList | mRequestedGeomCacheForLayers |
list of layer IDs for which the geometry cache should be updated More... | |
QMap< QString, QgsGeometryCache > | mGeometryCaches |
map of geometry caches More... | |
QTime | mRenderingStart |
int | mRenderingTime |
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... | |
Protected Member Functions inherited from QgsMapRendererJob | |
LayerRenderJobs | prepareJobs (QPainter *painter, QgsPalLabeling *labelingEngine) |
void | cleanupJobs (LayerRenderJobs &jobs) |
bool | needTemporaryImage (QgsMapLayer *ml) |
void | updateLayerGeometryCaches () |
called when rendering has finished to update all layers' geometry caches More... | |
Static Protected Member Functions inherited from QgsMapRendererJob | |
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 QImage | composeImage (const QgsMapSettings &settings, const LayerRenderJobs &jobs) |
static void | drawLabeling (const QgsMapSettings &settings, QgsRenderContext &renderContext, QgsPalLabeling *labelingEngine, QPainter *painter) |
static void | drawOldLabeling (const QgsMapSettings &settings, QgsRenderContext &renderContext) |
static void | drawNewLabeling (const QgsMapSettings &settings, QgsRenderContext &renderContext, QgsPalLabeling *labelingEngine) |
Job implementation that renders everything sequentially in one thread.
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.
Definition at line 30 of file qgsmaprenderersequentialjob.h.
QgsMapRendererSequentialJob::QgsMapRendererSequentialJob | ( | const QgsMapSettings & | settings | ) |
Definition at line 23 of file qgsmaprenderersequentialjob.cpp.
References mImage, QgsMapRendererJob::mSettings, QgsMapSettings::outputImageFormat(), QgsMapSettings::outputSize(), and QgsDebugMsg.
QgsMapRendererSequentialJob::~QgsMapRendererSequentialJob | ( | ) |
Definition at line 34 of file qgsmaprenderersequentialjob.cpp.
References cancel(), isActive(), mInternalJob, mLabelingResults, mPainter, and QgsDebugMsg.
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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 qgsmaprenderersequentialjob.cpp.
References QgsMapRendererCustomPainterJob::cancel(), isActive(), mInternalJob, mPainter, and QgsDebugMsg.
Referenced by ~QgsMapRendererSequentialJob().
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Definition at line 117 of file qgsmaprenderersequentialjob.cpp.
References QgsMapRendererJob::errors(), QgsMapRendererJob::finished(), QgsMapRendererJob::mErrors, mInternalJob, mLabelingResults, mPainter, QgsMapRendererJob::mRenderingStart, QgsMapRendererJob::mRenderingTime, QgsDebugMsg, and QgsMapRendererCustomPainterJob::takeLabelingResults().
Referenced by start().
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Tell whether the rendering job is currently running in background.
Implements QgsMapRendererJob.
Definition at line 94 of file qgsmaprenderersequentialjob.cpp.
References mInternalJob.
Referenced by cancel(), renderedImage(), start(), waitForFinished(), and ~QgsMapRendererSequentialJob().
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Get a preview/resulting image.
Implements QgsMapRendererQImageJob.
Definition at line 107 of file qgsmaprenderersequentialjob.cpp.
References QgsMapRendererJob::composeImage(), isActive(), QgsMapRendererCustomPainterJob::jobs(), QgsMapRendererJob::mCache, mImage, mInternalJob, and QgsMapRendererJob::mSettings.
Referenced by QgsRenderChecker::runTest().
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Start the rendering job and immediately return.
Does nothing if the rendering is already in progress.
Implements QgsMapRendererJob.
Definition at line 51 of file qgsmaprenderersequentialjob.cpp.
References QgsMapRendererJob::finished(), internalFinished(), isActive(), QgsMapRendererJob::mCache, QgsMapRendererJob::mErrors, mImage, mInternalJob, mPainter, QgsMapRendererJob::mRenderingStart, QgsMapRendererJob::mSettings, QgsDebugMsg, QgsMapRendererJob::setCache(), and QgsMapRendererCustomPainterJob::start().
Referenced by QgsRenderChecker::runTest().
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Get pointer to internal labeling engine (in order to get access to the results)
Implements QgsMapRendererJob.
Definition at line 99 of file qgsmaprenderersequentialjob.cpp.
References mLabelingResults.
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Block until the job has finished.
Implements QgsMapRendererJob.
Definition at line 86 of file qgsmaprenderersequentialjob.cpp.
References isActive(), mInternalJob, and QgsMapRendererCustomPainterJob::waitForFinished().
Referenced by QgsRenderChecker::runTest().
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Definition at line 54 of file qgsmaprenderersequentialjob.h.
Referenced by QgsMapRendererSequentialJob(), renderedImage(), and start().
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Definition at line 53 of file qgsmaprenderersequentialjob.h.
Referenced by cancel(), internalFinished(), isActive(), renderedImage(), start(), waitForFinished(), and ~QgsMapRendererSequentialJob().
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Definition at line 56 of file qgsmaprenderersequentialjob.h.
Referenced by internalFinished(), takeLabelingResults(), and ~QgsMapRendererSequentialJob().
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Definition at line 55 of file qgsmaprenderersequentialjob.h.
Referenced by cancel(), internalFinished(), start(), and ~QgsMapRendererSequentialJob().