void QgsMapToolNodeTool::canvasPressEvent( QMouseEvent * e )
{
QgsDebugCall;
mClicked = true;
mPressCoordinates = e->pos();
QList<QgsSnappingResult> snapResults;
if ( !mSelectedFeature )
{
QgsVectorLayer *vlayer = qobject_cast<QgsVectorLayer *>( mCanvas->currentLayer() );
if ( !vlayer )
return;
mSelectAnother = false;
mSnapper.snapToCurrentLayer( e->pos(), snapResults, QgsSnapper::SnapToVertexAndSegment, -1 );
if ( snapResults.size() < 1 )
{
displaySnapToleranceWarning();
return;
}
mSelectedFeature = new QgsSelectedFeature( snapResults[0].snappedAtGeometry, vlayer, mCanvas );
connect( QgisApp::instance()->legend(), SIGNAL( currentLayerChanged( QgsMapLayer* ) ), this, SLOT( currentLayerChanged( QgsMapLayer* ) ) );
connect( mSelectedFeature, SIGNAL( destroyed() ), this, SLOT( selectedFeatureDestroyed() ) );
mIsPoint = vlayer->geometryType() == QGis::Point;
}
void QgsMapToolNodeTool::canvasPressEvent( QMouseEvent * e )
{
QgsDebugCall;
mClicked = true;
mPressCoordinates = e->pos();
if ( !mSelectedFeature )
{
QgsVectorLayer *vlayer = qobject_cast<QgsVectorLayer *>( mCanvas->currentLayer() );
if ( !vlayer )
return;
mSelectAnother = false;
QgsPointLocator::Match m = mCanvas->snappingUtils()->snapToCurrentLayer( e->pos(), QgsPointLocator::Vertex | QgsPointLocator::Edge );
if ( !m.isValid() )
{
emit messageEmitted( tr( "could not snap to a segment on the current layer." ) );
return;
}
// remove previous warning
emit messageDiscarded();
mSelectedFeature = new QgsSelectedFeature( m.featureId(), vlayer, mCanvas );
connect( QgisApp::instance()->layerTreeView(), SIGNAL( currentLayerChanged( QgsMapLayer* ) ), this, SLOT( currentLayerChanged( QgsMapLayer* ) ) );
connect( mSelectedFeature, SIGNAL( destroyed() ), this, SLOT( selectedFeatureDestroyed() ) );
connect( vlayer, SIGNAL( editingStopped() ), this, SLOT( editingToggled() ) );
mIsPoint = vlayer->geometryType() == QGis::Point;
}
void QgsMapToolNodeTool::canvasPressEvent( QMouseEvent * e )
{
QgsDebugCall;
mClicked = true;
mPressCoordinates = e->pos();
QList<QgsSnappingResult> snapResults;
if ( !mSelectedFeature )
{
QgsVectorLayer *vlayer = qobject_cast<QgsVectorLayer *>( mCanvas->currentLayer() );
if ( !vlayer )
return;
mSelectAnother = false;
mSnapper.snapToCurrentLayer( e->pos(), snapResults, QgsSnapper::SnapToVertexAndSegment, -1 );
if ( snapResults.size() < 1 )
{
emit messageEmitted( tr( "could not snap to a segment on the current layer." ) );
return;
}
// remove previous warning
emit messageDiscarded();
mSelectedFeature = new QgsSelectedFeature( snapResults[0].snappedAtGeometry, vlayer, mCanvas );
connect( QgisApp::instance()->layerTreeView(), SIGNAL( currentLayerChanged( QgsMapLayer* ) ), this, SLOT( currentLayerChanged( QgsMapLayer* ) ) );
connect( mSelectedFeature, SIGNAL( destroyed() ), this, SLOT( selectedFeatureDestroyed() ) );
connect( vlayer, SIGNAL( editingStopped() ), this, SLOT( editingToggled() ) );
mIsPoint = vlayer->geometryType() == QGis::Point;
}
void QgsMapToolNodeTool::canvasPressEvent( QMouseEvent * e )
{
QgsDebugCall;
mClicked = true;
mPressCoordinates = e->pos();
QList<QgsSnappingResult> snapResults;
if ( !mSelectedFeature )
{
QgsVectorLayer *vlayer = qobject_cast<QgsVectorLayer *>( mCanvas->currentLayer() );
if ( !vlayer )
return;
mSelectAnother = false;
mSnapper.snapToCurrentLayer( e->pos(), snapResults, QgsSnapper::SnapToVertexAndSegment, -1 );
if ( snapResults.size() < 1 )
{
displaySnapToleranceWarning();
return;
}
mSelectedFeature = new QgsSelectedFeature( snapResults[0].snappedAtGeometry, vlayer, mCanvas );
connect( mSelectedFeature, SIGNAL( destroyed() ), this, SLOT( selectedFeatureDestroyed() ) );
mIsPoint = vlayer->geometryType() == QGis::Point;
}
else
{
QgsVectorLayer *vlayer = mSelectedFeature->vlayer();
Q_ASSERT( vlayer );
// some feature already selected
QgsPoint layerCoordPoint = toLayerCoordinates( vlayer, e->pos() );
double tol = QgsTolerance::vertexSearchRadius( vlayer, mCanvas->mapRenderer() );
// get geometry and find if snapping is near it
int atVertex, beforeVertex, afterVertex;
double dist;
QgsPoint closestLayerVertex = mSelectedFeature->geometry()->closestVertex( layerCoordPoint, atVertex, beforeVertex, afterVertex, dist );
dist = sqrt( dist );
mSnapper.snapToCurrentLayer( e->pos(), snapResults, QgsSnapper::SnapToVertex, tol );
if ( dist <= tol )
{
// some vertex selected
mMoving = true;
mClosestMapVertex = toMapCoordinates( vlayer, closestLayerVertex );
if ( mMoving )
{
if ( mSelectedFeature->isSelected( atVertex ) )
{
mDeselectOnRelease = atVertex;
}
else if ( mCtrl )
{
mSelectedFeature->invertVertexSelection( atVertex );
}
else
{
mSelectedFeature->deselectAllVertexes();
mSelectedFeature->selectVertex( atVertex );
}
}
else
{
// select another feature
mAnother = snapResults.first().snappedAtGeometry;
mSelectAnother = true;
}
}
else
{
// no near vertex to snap
// unless point layer, try segment
if ( !mIsPoint )
mSnapper.snapToCurrentLayer( e->pos(), snapResults, QgsSnapper::SnapToSegment, tol );
if ( snapResults.size() > 0 )
{
// need to check all if there is a point in the feature
mAnother = snapResults.first().snappedAtGeometry;
mSelectAnother = true;
QList<QgsSnappingResult>::iterator it = snapResults.begin();
QgsSnappingResult snapResult;
for ( ; it != snapResults.end(); ++it )
{
if ( it->snappedAtGeometry == mSelectedFeature->featureId() )
{
snapResult = *it;
mAnother = 0;
mSelectAnother = false;
break;
}
}
if ( !mSelectAnother )
{
mMoving = true;
mClosestMapVertex = toMapCoordinates( vlayer, closestLayerVertex );
if ( mIsPoint )
{
if ( !mCtrl )
{
mSelectedFeature->deselectAllVertexes();
mSelectedFeature->selectVertex( snapResult.snappedVertexNr );
}
else
{
mSelectedFeature->invertVertexSelection( snapResult.snappedVertexNr );
}
}
else
{
if ( !mCtrl )
{
mSelectedFeature->deselectAllVertexes();
mSelectedFeature->selectVertex( snapResult.afterVertexNr );
mSelectedFeature->selectVertex( snapResult.beforeVertexNr );
}
else
{
mSelectedFeature->invertVertexSelection( snapResult.afterVertexNr );
mSelectedFeature->invertVertexSelection( snapResult.beforeVertexNr );
}
}
}
}
else if ( !mCtrl )
{
mSelectedFeature->deselectAllVertexes();
}
}
}
}
