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8100495df6
Now used instead of QgsPalLabeling for labels/diagrams This code has been funded by Tuscany Region (Italy) - SITA (CIG: 63526840AE) and commissioned to Gis3W s.a.s.
76 lines
2.5 KiB
C++
76 lines
2.5 KiB
C++
/***************************************************************************
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qgsmaprendererparalleljob.h
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--------------------------------------
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Date : December 2013
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Copyright : (C) 2013 by Martin Dobias
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Email : wonder dot sk at gmail dot com
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***************************************************************************
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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***************************************************************************/
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#ifndef QGSMAPRENDERERPARALLELJOB_H
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#define QGSMAPRENDERERPARALLELJOB_H
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#include "qgsmaprendererjob.h"
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/** Job implementation that renders all layers in parallel.
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*
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* The resulting map image can be retrieved with renderedImage() function.
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* It is safe to call that function while rendering is active to see preview of the map.
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*
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* @note added in 2.4
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*/
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class CORE_EXPORT QgsMapRendererParallelJob : public QgsMapRendererQImageJob
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{
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Q_OBJECT
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public:
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QgsMapRendererParallelJob( const QgsMapSettings& settings );
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~QgsMapRendererParallelJob();
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virtual void start() override;
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virtual void cancel() override;
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virtual void waitForFinished() override;
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virtual bool isActive() const override;
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virtual QgsLabelingResults* takeLabelingResults() override;
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// from QgsMapRendererJobWithPreview
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virtual QImage renderedImage() override;
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protected slots:
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//! layers are rendered, labeling is still pending
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void renderLayersFinished();
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//! all rendering is finished, including labeling
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void renderingFinished();
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protected:
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static void renderLayerStatic( LayerRenderJob& job );
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static void renderLabelsStatic( QgsMapRendererParallelJob* self );
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protected:
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QImage mFinalImage;
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enum { Idle, RenderingLayers, RenderingLabels } mStatus;
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QFuture<void> mFuture;
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QFutureWatcher<void> mFutureWatcher;
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LayerRenderJobs mLayerJobs;
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QgsPalLabeling* mLabelingEngine;
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QgsLabelingEngineV2* mLabelingEngineV2;
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QgsRenderContext mLabelingRenderContext;
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QFuture<void> mLabelingFuture;
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QFutureWatcher<void> mLabelingFutureWatcher;
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};
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#endif // QGSMAPRENDERERPARALLELJOB_H
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