void QgsMapRendererCache::clearCacheImage( const QString& layerId )
{
QMutexLocker lock( &mMutex );
mCachedImages.remove( layerId );
QgsMapLayer* layer = QgsProject::instance()->mapLayer( layerId );
if ( layer )
{
disconnect( layer, SIGNAL( repaintRequested() ), this, SLOT( layerRequestedRepaint() ) );
}
}
void QgsMapRendererCache::setCacheImage( const QString& layerId, const QImage& img )
{
QMutexLocker lock( &mMutex );
mCachedImages[layerId] = img;
// connect to the layer to listen to layer's repaintRequested() signals
QgsMapLayer* layer = QgsProject::instance()->mapLayer( layerId );
if ( layer )
{
connect( layer, SIGNAL( repaintRequested() ), this, SLOT( layerRequestedRepaint() ) );
}
}
void QgsMapRendererCache::clearInternal()
{
mExtent.setMinimal();
mScale = 0;
// make sure we are disconnected from all layers
Q_FOREACH ( const QString& layerId, mCachedImages.keys() )
{
QgsMapLayer* layer = QgsMapLayerRegistry::instance()->mapLayer( layerId );
if ( layer )
{
disconnect( layer, SIGNAL( repaintRequested() ), this, SLOT( layerRequestedRepaint() ) );
}
}
mCachedImages.clear();
}
void QgsMapRendererCache::clearInternal()
{
mExtent.setMinimal();
mScale = 0;
// make sure we are disconnected from all layers
QMap<QString, QImage>::const_iterator it = mCachedImages.constBegin();
for ( ; it != mCachedImages.constEnd(); ++it )
{
QgsMapLayer* layer = QgsProject::instance()->mapLayer( it.key() );
if ( layer )
{
disconnect( layer, SIGNAL( repaintRequested() ), this, SLOT( layerRequestedRepaint() ) );
}
}
mCachedImages.clear();
}
