/usr/include/qgis/qgsmaprendererparalleljob.h is in libqgis-dev 2.4.0-1+b1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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qgsmaprendererparalleljob.h
--------------------------------------
Date : December 2013
Copyright : (C) 2013 by Martin Dobias
Email : wonder dot sk at gmail dot com
***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************/
#ifndef QGSMAPRENDERERPARALLELJOB_H
#define QGSMAPRENDERERPARALLELJOB_H
#include "qgsmaprendererjob.h"
/** 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
*/
class CORE_EXPORT QgsMapRendererParallelJob : public QgsMapRendererQImageJob
{
Q_OBJECT
public:
QgsMapRendererParallelJob( const QgsMapSettings& settings );
~QgsMapRendererParallelJob();
virtual void start();
virtual void cancel();
virtual void waitForFinished();
virtual bool isActive() const;
virtual QgsLabelingResults* takeLabelingResults();
// from QgsMapRendererJobWithPreview
virtual QImage renderedImage();
protected slots:
//! layers are rendered, labeling is still pending
void renderLayersFinished();
//! all rendering is finished, including labeling
void renderingFinished();
protected:
static void renderLayerStatic( LayerRenderJob& job );
static void renderLabelsStatic( QgsMapRendererParallelJob* self );
protected:
QImage mFinalImage;
enum { Idle, RenderingLayers, RenderingLabels } mStatus;
QFuture<void> mFuture;
QFutureWatcher<void> mFutureWatcher;
LayerRenderJobs mLayerJobs;
QgsPalLabeling* mLabelingEngine;
QgsRenderContext mLabelingRenderContext;
QFuture<void> mLabelingFuture;
QFutureWatcher<void> mLabelingFutureWatcher;
};
#endif // QGSMAPRENDERERPARALLELJOB_H
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