void QgsZonalStatisticsDialog::insertAvailableLayers()
{
//insert available raster layers
//enter available layers into the combo box
QMap<QString, QgsMapLayer*> mapLayers = QgsMapLayerRegistry::instance()->mapLayers();
QMap<QString, QgsMapLayer*>::iterator layer_it = mapLayers.begin();
for ( ; layer_it != mapLayers.end(); ++layer_it )
{
QgsRasterLayer* rl = dynamic_cast<QgsRasterLayer*>( layer_it.value() );
if ( rl )
{
QgsRasterDataProvider* rp = rl->dataProvider();
if ( rp && rp->name() == "gdal" )
{
mRasterLayerComboBox->addItem( rl->name(), QVariant( rl->source() ) );
}
}
else
{
QgsVectorLayer* vl = dynamic_cast<QgsVectorLayer*>( layer_it.value() );
if ( vl && vl->geometryType() == QGis::Polygon )
{
QgsVectorDataProvider* provider = vl->dataProvider();
if ( provider->capabilities() & QgsVectorDataProvider::AddAttributes )
{
mPolygonLayerComboBox->addItem( vl->name(), QVariant( vl->id() ) );
}
}
}
}
}
void QgsTileScaleWidget::layerChanged( QgsMapLayer *layer )
{
QgsRasterLayer *rl = qobject_cast<QgsRasterLayer *>( layer );
mResolutions.clear();
mSlider->setDisabled( true );
if ( !rl || rl->providerType() != "wms" )
return;
QString uri = rl->source();
int tiledpos = uri.indexOf( "tiled=" );
int urlpos = uri.indexOf( "url=" );
if ( tiledpos >= 0 && urlpos >= 0 && urlpos > tiledpos )
{
uri = uri.mid( tiledpos + 6 );
int pos = uri.indexOf( "," );
if ( pos >= 0 )
uri = uri.left( pos );
QStringList params = uri.split( ";" );
if ( params.size() < 3 )
return;
params.takeFirst();
params.takeFirst();
mResolutions.clear();
foreach( QString r, params )
{
mResolutions << r.toDouble();
}
qSort( mResolutions );
for ( int i = 0; i < mResolutions.size(); i++ )
QgsDebugMsg( QString( "found resolution %1: %2" ).arg( i ).arg( mResolutions[i] ) );
mSlider->setRange( 0, mResolutions.size() - 1 );
mSlider->setTickInterval( 1 );
mSlider->setInvertedAppearance( true );
mSlider->setPageStep( 1 );
mSlider->setTracking( false );
scaleChanged( mMapCanvas->scale() );
mSlider->setEnabled( true );
show();
}
QString QgsZonalStatisticsDialog::rasterFilePath() const
{
QgsRasterLayer* layer = rasterLayer();
return layer ? layer->source() : QString();
}
