void QgsWFSData::calculateExtentFromFeatures() const
{
if ( mFeatures.size() < 1 )
{
return;
}
QgsRectangle bbox;
QgsFeature* currentFeature = 0;
QgsGeometry* currentGeometry = 0;
bool bboxInitialised = false; //gets true once bbox has been set to the first geometry
for ( int i = 0; i < mFeatures.size(); ++i )
{
currentFeature = mFeatures[i];
if ( !currentFeature )
{
continue;
}
currentGeometry = currentFeature->geometry();
if ( currentGeometry )
{
if ( !bboxInitialised )
{
bbox = currentGeometry->boundingBox();
bboxInitialised = true;
}
else
{
bbox.unionRect( currentGeometry->boundingBox() );
}
}
}
( *mExtent ) = bbox;
}
void QgsGeometryCheckerResultTab::highlightErrors( bool current )
{
qDeleteAll( mCurrentRubberBands );
mCurrentRubberBands.clear();
QList<QTableWidgetItem*> items;
QList<QgsPoint> errorPositions;
QgsRectangle totextent;
if ( current )
{
items.append( ui.tableWidgetErrors->currentItem() );
}
else
{
items.append( ui.tableWidgetErrors->selectedItems() );
}
foreach ( QTableWidgetItem* item, items )
{
QgsGeometryCheckError* error = ui.tableWidgetErrors->item( item->row(), 0 )->data( Qt::UserRole ).value<QgsGeometryCheckError*>();
QgsAbstractGeometryV2* geometry = error->geometry();
if ( ui.checkBoxHighlight->isChecked() && geometry )
{
QgsRubberBand* featureRubberBand = new QgsRubberBand( mIface->mapCanvas() );
QgsGeometry geom( geometry );
featureRubberBand->addGeometry( &geom, mFeaturePool->getLayer() );
featureRubberBand->setWidth( 5 );
featureRubberBand->setColor( Qt::yellow );
mCurrentRubberBands.append( featureRubberBand );
}
else
{
// QgsGeometry above takes ownership of geometry and deletes it when it goes out of scope
delete geometry;
geometry = 0;
}
if ( ui.radioButtonError->isChecked() || current || error->status() == QgsGeometryCheckError::StatusFixed )
{
QgsRubberBand* pointRubberBand = new QgsRubberBand( mIface->mapCanvas(), QGis::Point );
QgsPoint pos = mIface->mapCanvas()->mapSettings().layerToMapCoordinates( mFeaturePool->getLayer(), QgsPoint( error->location().x(), error->location().y() ) );
pointRubberBand->addPoint( pos );
pointRubberBand->setWidth( 20 );
pointRubberBand->setColor( Qt::red );
mCurrentRubberBands.append( pointRubberBand );
errorPositions.append( pos );
}
else if ( ui.radioButtonFeature->isChecked() && geometry )
{
QgsRectangle geomextent = mIface->mapCanvas()->mapSettings().layerExtentToOutputExtent( mFeaturePool->getLayer(), geometry->boundingBox() );
if ( totextent.isEmpty() )
{
totextent = geomextent;
}
else
{
totextent.unionRect( geomextent );
}
}
}
QgsRectangle QgsMapSettings::fullExtent() const
{
QgsDebugMsg( "called." );
QgsMapLayerRegistry* registry = QgsMapLayerRegistry::instance();
// reset the map canvas extent since the extent may now be smaller
// We can't use a constructor since QgsRectangle normalizes the rectangle upon construction
QgsRectangle fullExtent;
fullExtent.setMinimal();
// iterate through the map layers and test each layers extent
// against the current min and max values
QStringList::const_iterator it = mLayers.begin();
QgsDebugMsg( QString( "Layer count: %1" ).arg( mLayers.count() ) );
while ( it != mLayers.end() )
{
QgsMapLayer * lyr = registry->mapLayer( *it );
if ( !lyr )
{
QgsDebugMsg( QString( "WARNING: layer '%1' not found in map layer registry!" ).arg( *it ) );
}
else
{
QgsDebugMsg( "Updating extent using " + lyr->name() );
QgsDebugMsg( "Input extent: " + lyr->extent().toString() );
if ( lyr->extent().isNull() )
{
++it;
continue;
}
// Layer extents are stored in the coordinate system (CS) of the
// layer. The extent must be projected to the canvas CS
QgsRectangle extent = layerExtentToOutputExtent( lyr, lyr->extent() );
QgsDebugMsg( "Output extent: " + extent.toString() );
fullExtent.unionRect( extent );
}
++it;
}
if ( fullExtent.width() == 0.0 || fullExtent.height() == 0.0 )
{
// If all of the features are at the one point, buffer the
// rectangle a bit. If they are all at zero, do something a bit
// more crude.
if ( fullExtent.xMinimum() == 0.0 && fullExtent.xMaximum() == 0.0 &&
fullExtent.yMinimum() == 0.0 && fullExtent.yMaximum() == 0.0 )
{
fullExtent.set( -1.0, -1.0, 1.0, 1.0 );
}
else
{
const double padFactor = 1e-8;
double widthPad = fullExtent.xMinimum() * padFactor;
double heightPad = fullExtent.yMinimum() * padFactor;
double xmin = fullExtent.xMinimum() - widthPad;
double xmax = fullExtent.xMaximum() + widthPad;
double ymin = fullExtent.yMinimum() - heightPad;
double ymax = fullExtent.yMaximum() + heightPad;
fullExtent.set( xmin, ymin, xmax, ymax );
}
}
QgsDebugMsg( "Full extent: " + fullExtent.toString() );
return fullExtent;
}
