QgsLayerRestorer::QgsLayerRestorer( const QList<QgsMapLayer *> &layers )
{
for ( QgsMapLayer *layer : layers )
{
QgsLayerSettings settings;
settings.name = layer->name();
QString style = layer->styleManager()->currentStyle();
settings.mNamedStyle = layer->styleManager()->currentStyle();
// set a custom property allowing to keep in memory if a SLD file has
// been loaded for rendering
layer->setCustomProperty( "readSLD", false );
QString errMsg;
QDomDocument sldDoc;
layer->exportSldStyle( sldDoc, errMsg );
( void )settings.mSldStyle.setContent( sldDoc.toString(), true ); // for namespace processing
switch ( layer->type() )
{
case QgsMapLayer::VectorLayer:
{
QgsVectorLayer *vLayer = qobject_cast<QgsVectorLayer *>( layer );
if ( vLayer )
{
settings.mOpacity = vLayer->opacity();
settings.mSelectedFeatureIds = vLayer->selectedFeatureIds();
settings.mFilter = vLayer->subsetString();
}
break;
}
case QgsMapLayer::LayerType::RasterLayer:
{
QgsRasterLayer *rLayer = qobject_cast<QgsRasterLayer *>( layer );
if ( rLayer )
{
settings.mOpacity = rLayer->renderer()->opacity();
}
break;
}
case QgsMapLayer::MeshLayer:
case QgsMapLayer::PluginLayer:
break;
}
mLayerSettings[layer] = settings;
}
}
void QgsMapToolSelectUtils::selectSingleFeature( QgsMapCanvas *canvas, const QgsGeometry &selectGeometry, Qt::KeyboardModifiers modifiers )
{
QgsVectorLayer *vlayer = QgsMapToolSelectUtils::getCurrentVectorLayer( canvas );
if ( !vlayer )
return;
QApplication::setOverrideCursor( Qt::WaitCursor );
QgsFeatureIds selectedFeatures = getMatchingFeatures( canvas, selectGeometry, false, true );
if ( selectedFeatures.isEmpty() )
{
if ( !( modifiers & Qt::ShiftModifier || modifiers & Qt::ControlModifier ) )
{
// if no modifiers then clicking outside features clears the selection
// but if there's a shift or ctrl modifier, then it's likely the user was trying
// to modify an existing selection by adding or subtracting features and just
// missed the feature
vlayer->removeSelection();
}
QApplication::restoreOverrideCursor();
return;
}
QgsVectorLayer::SelectBehavior behavior = QgsVectorLayer::SetSelection;
//either shift or control modifier switches to "toggle" selection mode
if ( modifiers & Qt::ShiftModifier || modifiers & Qt::ControlModifier )
{
QgsFeatureId selectId = *selectedFeatures.constBegin();
QgsFeatureIds layerSelectedFeatures = vlayer->selectedFeatureIds();
if ( layerSelectedFeatures.contains( selectId ) )
behavior = QgsVectorLayer::RemoveFromSelection;
else
behavior = QgsVectorLayer::AddToSelection;
}
vlayer->selectByIds( selectedFeatures, behavior );
QApplication::restoreOverrideCursor();
}
void QgsMapToolRotateFeature::canvasReleaseEvent( QgsMapMouseEvent *e )
{
if ( !mCanvas )
{
return;
}
QgsVectorLayer *vlayer = currentVectorLayer();
if ( !vlayer )
{
deleteRotationWidget();
deleteRubberband();
notifyNotVectorLayer();
return;
}
if ( e->button() == Qt::RightButton )
{
cancel();
return;
}
// place anchor point on CTRL + click
if ( e->modifiers() & Qt::ControlModifier )
{
if ( !mAnchorPoint )
{
return;
}
mAnchorPoint->setCenter( toMapCoordinates( e->pos() ) );
mStartPointMapCoords = toMapCoordinates( e->pos() );
mStPoint = e->pos();
return;
}
deleteRotationWidget();
// Initialize rotation if not yet active
if ( !mRotationActive )
{
mRotation = 0;
mRotationOffset = 0;
deleteRubberband();
mInitialPos = e->pos();
if ( !vlayer->isEditable() )
{
notifyNotEditableLayer();
return;
}
QgsPointXY layerCoords = toLayerCoordinates( vlayer, e->pos() );
double searchRadius = QgsTolerance::vertexSearchRadius( mCanvas->currentLayer(), mCanvas->mapSettings() );
QgsRectangle selectRect( layerCoords.x() - searchRadius, layerCoords.y() - searchRadius,
layerCoords.x() + searchRadius, layerCoords.y() + searchRadius );
if ( vlayer->selectedFeatureCount() == 0 )
{
QgsFeatureIterator fit = vlayer->getFeatures( QgsFeatureRequest().setFilterRect( selectRect ).setNoAttributes() );
//find the closest feature
QgsGeometry pointGeometry = QgsGeometry::fromPointXY( layerCoords );
if ( pointGeometry.isNull() )
{
return;
}
double minDistance = std::numeric_limits<double>::max();
QgsFeature cf;
QgsFeature f;
while ( fit.nextFeature( f ) )
{
if ( f.hasGeometry() )
{
double currentDistance = pointGeometry.distance( f.geometry() );
if ( currentDistance < minDistance )
{
minDistance = currentDistance;
cf = f;
}
}
}
if ( minDistance == std::numeric_limits<double>::max() )
{
emit messageEmitted( tr( "Could not find a nearby feature in the current layer." ) );
return;
}
QgsRectangle bound = cf.geometry().boundingBox();
mStartPointMapCoords = toMapCoordinates( vlayer, bound.center() );
if ( !mAnchorPoint )
{
mAnchorPoint = qgis::make_unique<QgsVertexMarker>( mCanvas );
}
mAnchorPoint->setIconType( QgsVertexMarker::ICON_CROSS );
mAnchorPoint->setCenter( mStartPointMapCoords );
mStPoint = toCanvasCoordinates( mStartPointMapCoords );
mRotatedFeatures.clear();
mRotatedFeatures << cf.id(); //todo: take the closest feature, not the first one...
mRubberBand = createRubberBand( vlayer->geometryType() );
mRubberBand->setToGeometry( cf.geometry(), vlayer );
}
else
{
mRotatedFeatures = vlayer->selectedFeatureIds();
mRubberBand = createRubberBand( vlayer->geometryType() );
QgsFeature feat;
QgsFeatureIterator it = vlayer->getSelectedFeatures();
while ( it.nextFeature( feat ) )
{
mRubberBand->addGeometry( feat.geometry(), vlayer );
}
}
mRubberBand->show();
double XDistance = mInitialPos.x() - mAnchorPoint->x();
double YDistance = mInitialPos.y() - mAnchorPoint->y();
mRotationOffset = std::atan2( YDistance, XDistance ) * ( 180 / M_PI );
createRotationWidget();
if ( e->modifiers() & Qt::ShiftModifier )
{
if ( mRotationWidget )
{
mRotationWidget->setMagnet( 45 );
}
}
mRotationActive = true;
return;
}
applyRotation( mRotation );
}
void QgsMapToolMoveFeature::cadCanvasReleaseEvent( QgsMapMouseEvent *e )
{
QgsVectorLayer *vlayer = currentVectorLayer();
if ( !vlayer || !vlayer->isEditable() )
{
delete mRubberBand;
mRubberBand = nullptr;
mSnapIndicator->setMatch( QgsPointLocator::Match() );
cadDockWidget()->clear();
notifyNotEditableLayer();
return;
}
if ( !mRubberBand )
{
//find first geometry under mouse cursor and store iterator to it
QgsPointXY layerCoords = toLayerCoordinates( vlayer, e->mapPoint() );
double searchRadius = QgsTolerance::vertexSearchRadius( mCanvas->currentLayer(), mCanvas->mapSettings() );
QgsRectangle selectRect( layerCoords.x() - searchRadius, layerCoords.y() - searchRadius,
layerCoords.x() + searchRadius, layerCoords.y() + searchRadius );
if ( vlayer->selectedFeatureCount() == 0 )
{
QgsFeatureIterator fit = vlayer->getFeatures( QgsFeatureRequest().setFilterRect( selectRect ).setNoAttributes() );
//find the closest feature
QgsGeometry pointGeometry = QgsGeometry::fromPointXY( layerCoords );
if ( pointGeometry.isNull() )
{
cadDockWidget()->clear();
return;
}
double minDistance = std::numeric_limits<double>::max();
QgsFeature cf;
QgsFeature f;
while ( fit.nextFeature( f ) )
{
if ( f.hasGeometry() )
{
double currentDistance = pointGeometry.distance( f.geometry() );
if ( currentDistance < minDistance )
{
minDistance = currentDistance;
cf = f;
}
}
}
if ( minDistance == std::numeric_limits<double>::max() )
{
cadDockWidget()->clear();
return;
}
mMovedFeatures.clear();
mMovedFeatures << cf.id(); //todo: take the closest feature, not the first one...
mRubberBand = createRubberBand( vlayer->geometryType() );
mRubberBand->setToGeometry( cf.geometry(), vlayer );
}
else
{
mMovedFeatures = vlayer->selectedFeatureIds();
mRubberBand = createRubberBand( vlayer->geometryType() );
QgsFeature feat;
QgsFeatureIterator it = vlayer->getSelectedFeatures( QgsFeatureRequest().setNoAttributes() );
bool allFeaturesInView = true;
QgsRectangle viewRect = mCanvas->mapSettings().mapToLayerCoordinates( vlayer, mCanvas->extent() );
while ( it.nextFeature( feat ) )
{
mRubberBand->addGeometry( feat.geometry(), vlayer );
if ( allFeaturesInView && !viewRect.intersects( feat.geometry().boundingBox() ) )
allFeaturesInView = false;
}
if ( !allFeaturesInView )
{
// for extra safety to make sure we are not modifying geometries by accident
int res = QMessageBox::warning( mCanvas, tr( "Move features" ),
tr( "Some of the selected features are outside of the current map view. Would you still like to continue?" ),
QMessageBox::Yes | QMessageBox::No );
if ( res != QMessageBox::Yes )
{
mMovedFeatures.clear();
delete mRubberBand;
mRubberBand = nullptr;
mSnapIndicator->setMatch( QgsPointLocator::Match() );
return;
}
}
}
mStartPointMapCoords = e->mapPoint();
mRubberBand->show();
}
else
{
// copy and move mode
if ( e->button() != Qt::LeftButton )
{
cadDockWidget()->clear();
delete mRubberBand;
mRubberBand = nullptr;
mSnapIndicator->setMatch( QgsPointLocator::Match() );
return;
}
QgsPointXY startPointLayerCoords = toLayerCoordinates( ( QgsMapLayer * )vlayer, mStartPointMapCoords );
QgsPointXY stopPointLayerCoords = toLayerCoordinates( ( QgsMapLayer * )vlayer, e->mapPoint() );
double dx = stopPointLayerCoords.x() - startPointLayerCoords.x();
double dy = stopPointLayerCoords.y() - startPointLayerCoords.y();
vlayer->beginEditCommand( mMode == Move ? tr( "Feature moved" ) : tr( "Feature copied and moved" ) );
switch ( mMode )
{
case Move:
Q_FOREACH ( QgsFeatureId id, mMovedFeatures )
{
vlayer->translateFeature( id, dx, dy );
}
delete mRubberBand;
mRubberBand = nullptr;
mSnapIndicator->setMatch( QgsPointLocator::Match() );
cadDockWidget()->clear();
break;
case CopyMove:
QgsFeatureRequest request;
request.setFilterFids( mMovedFeatures );
QString *errorMsg = new QString();
if ( !QgisApp::instance()->vectorLayerTools()->copyMoveFeatures( vlayer, request, dx, dy, errorMsg ) )
{
emit messageEmitted( *errorMsg, Qgis::Critical );
delete mRubberBand;
mRubberBand = nullptr;
mSnapIndicator->setMatch( QgsPointLocator::Match() );
}
break;
}
vlayer->endEditCommand();
vlayer->triggerRepaint();
}