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[FEATURE] fill ring digitinzing tool
Used to cut holes in polygons and automatically fill them with new features. Attributes taken from parent feature. Feature form opens by default. Hold Ctrl key to suppress it.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,190 @@ | ||
| /*************************************************************************** | ||
| qgsmaptoolfillring.h - map tool to cut rings in polygon and multipolygon | ||
| features and fill them with new feature | ||
| --------------------- | ||
| begin : December 2013 | ||
| copyright : (C) 2013 by Alexander Bruy | ||
| email : alexander dot bruy at gmail dot com | ||
| *************************************************************************** | ||
| * * | ||
| * This program is free software; you can redistribute it and/or modify * | ||
| * it under the terms of the GNU General Public License as published by * | ||
| * the Free Software Foundation; either version 2 of the License, or * | ||
| * (at your option) any later version. * | ||
| * * | ||
| ***************************************************************************/ | ||
|
|
||
| #include "qgsmaptoolfillring.h" | ||
| #include "qgsgeometry.h" | ||
| #include "qgsmapcanvas.h" | ||
| #include "qgsvectorlayer.h" | ||
| #include "qgsattributedialog.h" | ||
| #include <qgsapplication.h> | ||
|
|
||
| #include <QMessageBox> | ||
| #include <QMouseEvent> | ||
|
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||
| #include <limits> | ||
|
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| QgsMapToolFillRing::QgsMapToolFillRing( QgsMapCanvas* canvas ): QgsMapToolCapture( canvas, QgsMapToolCapture::CapturePolygon ) | ||
| { | ||
|
|
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| } | ||
|
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| QgsMapToolFillRing::~QgsMapToolFillRing() | ||
| { | ||
|
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| } | ||
|
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| void QgsMapToolFillRing::canvasReleaseEvent( QMouseEvent * e ) | ||
| { | ||
| //check if we operate on a vector layer | ||
| QgsVectorLayer *vlayer = qobject_cast<QgsVectorLayer *>( mCanvas->currentLayer() ); | ||
|
|
||
| if ( !vlayer ) | ||
| { | ||
| notifyNotVectorLayer(); | ||
| return; | ||
| } | ||
|
|
||
| if ( !vlayer->isEditable() ) | ||
| { | ||
| notifyNotEditableLayer(); | ||
| return; | ||
| } | ||
|
|
||
| //add point to list and to rubber band | ||
| if ( e->button() == Qt::LeftButton ) | ||
| { | ||
| int error = addVertex( e->pos() ); | ||
| if ( error == 1 ) | ||
| { | ||
| //current layer is not a vector layer | ||
| return; | ||
| } | ||
| else if ( error == 2 ) | ||
| { | ||
| //problem with coordinate transformation | ||
| QMessageBox::information( 0, tr( "Coordinate transform error" ), | ||
| tr( "Cannot transform the point to the layers coordinate system" ) ); | ||
| return; | ||
| } | ||
|
|
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| startCapturing(); | ||
| } | ||
| else if ( e->button() == Qt::RightButton ) | ||
| { | ||
| deleteTempRubberBand(); | ||
|
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| closePolygon(); | ||
|
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| vlayer->beginEditCommand( tr( "Ring added and filled" ) ); | ||
| int addRingReturnCode = vlayer->addRing( points() ); | ||
| if ( addRingReturnCode != 0 ) | ||
| { | ||
| QString errorMessage; | ||
| //todo: open message box to communicate errors | ||
| if ( addRingReturnCode == 1 ) | ||
| { | ||
| errorMessage = tr( "A problem with geometry type occured" ); | ||
| } | ||
| else if ( addRingReturnCode == 2 ) | ||
| { | ||
| errorMessage = tr( "The inserted Ring is not closed" ); | ||
| } | ||
| else if ( addRingReturnCode == 3 ) | ||
| { | ||
| errorMessage = tr( "The inserted Ring is not a valid geometry" ); | ||
| } | ||
| else if ( addRingReturnCode == 4 ) | ||
| { | ||
| errorMessage = tr( "The inserted Ring crosses existing rings" ); | ||
| } | ||
| else if ( addRingReturnCode == 5 ) | ||
| { | ||
| errorMessage = tr( "The inserted Ring is not contained in a feature" ); | ||
| } | ||
| else | ||
| { | ||
| errorMessage = tr( "An unknown error occured" ); | ||
| } | ||
| QMessageBox::critical( 0, tr( "Error, could not add ring" ), errorMessage ); | ||
| vlayer->destroyEditCommand(); | ||
| } | ||
| else | ||
| { | ||
| // find parent feature and get it attributes | ||
| double xMin, xMax, yMin, yMax; | ||
| QgsRectangle bBox; | ||
|
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||
| xMin = std::numeric_limits<double>::max(); | ||
| xMax = -std::numeric_limits<double>::max(); | ||
| yMin = std::numeric_limits<double>::max(); | ||
| yMax = -std::numeric_limits<double>::max(); | ||
|
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||
| for ( QList<QgsPoint>::const_iterator it = points().constBegin(); it != points().constEnd(); ++it ) | ||
| { | ||
| if ( it->x() < xMin ) | ||
| { | ||
| xMin = it->x(); | ||
| } | ||
| if ( it->x() > xMax ) | ||
| { | ||
| xMax = it->x(); | ||
| } | ||
| if ( it->y() < yMin ) | ||
| { | ||
| yMin = it->y(); | ||
| } | ||
| if ( it->y() > yMax ) | ||
| { | ||
| yMax = it->y(); | ||
| } | ||
| } | ||
| bBox.setXMinimum( xMin ); | ||
| bBox.setYMinimum( yMin ); | ||
| bBox.setXMaximum( xMax ); | ||
| bBox.setYMaximum( yMax ); | ||
|
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| QgsFeatureIterator fit = vlayer->getFeatures( QgsFeatureRequest().setFilterRect( bBox ).setFlags( QgsFeatureRequest::ExactIntersect ) ); | ||
|
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| QgsFeature f; | ||
| bool res = false; | ||
| while ( fit.nextFeature( f ) ) | ||
| { | ||
| //create QgsFeature with wkb representation | ||
| QgsFeature* ft = new QgsFeature( vlayer->pendingFields(), 0 ); | ||
|
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| QgsGeometry *g; | ||
| g = QgsGeometry::fromPolygon( QgsPolygon() << points().toVector() ); | ||
| ft->setGeometry( g ); | ||
| ft->setAttributes( f.attributes() ); | ||
|
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| if ( QgsApplication::keyboardModifiers() == Qt::ControlModifier ) | ||
| { | ||
| res = vlayer->addFeature( *ft ); | ||
| } | ||
| else | ||
| { | ||
| QgsAttributeDialog *dialog = new QgsAttributeDialog( vlayer, ft, false, NULL, true ); | ||
| if ( dialog->exec() ) | ||
| { | ||
| res = vlayer->addFeature( *ft ); | ||
| } | ||
| } | ||
|
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| if ( res ) | ||
| { | ||
| vlayer->endEditCommand(); | ||
| } | ||
| else | ||
| { | ||
| delete ft; | ||
| vlayer->destroyEditCommand(); | ||
| } | ||
| res = false; | ||
| } | ||
| } | ||
| stopCapturing(); | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,29 @@ | ||
| /*************************************************************************** | ||
| qgsmaptoolfillring.h - map tool to cut rings in polygon and multipolygon | ||
| features and fill them with new feature | ||
| --------------------- | ||
| begin : December 2013 | ||
| copyright : (C) 2013 by Alexander Bruy | ||
| email : alexander dot bruy at gmail dot com | ||
| *************************************************************************** | ||
| * * | ||
| * This program is free software; you can redistribute it and/or modify * | ||
| * it under the terms of the GNU General Public License as published by * | ||
| * the Free Software Foundation; either version 2 of the License, or * | ||
| * (at your option) any later version. * | ||
| * * | ||
| ***************************************************************************/ | ||
|
|
||
| #include "qgsmaptoolcapture.h" | ||
|
|
||
| /** A tool to cut holes into polygon and multipolygon features and fill them | ||
| * with new feature. Attributes are copied from parent feature. | ||
| * */ | ||
| class APP_EXPORT QgsMapToolFillRing: public QgsMapToolCapture | ||
| { | ||
| Q_OBJECT | ||
| public: | ||
| QgsMapToolFillRing( QgsMapCanvas* canvas ); | ||
| virtual ~QgsMapToolFillRing(); | ||
| void canvasReleaseEvent( QMouseEvent * e ); | ||
| }; |
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