Пример #1
0
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;
  }
Пример #2
0
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;
  }
Пример #3
0
void QgsMapToolOffsetCurve::updateGeometryAndRubberBand( double offset )
{
  if ( !mRubberBand || mOriginalGeometry.isNull() )
  {
    return;
  }

  if ( !mLayer )
  {
    return;
  }

  QgsGeometry offsetGeom;
  QgsSettings s;
  QgsGeometry::JoinStyle joinStyle = s.enumValue( QStringLiteral( "/qgis/digitizing/offset_join_style" ),  QgsGeometry::JoinStyleRound );
  int quadSegments = s.value( QStringLiteral( "/qgis/digitizing/offset_quad_seg" ), 8 ).toInt();
  double miterLimit = s.value( QStringLiteral( "/qgis/digitizing/offset_miter_limit" ), 5.0 ).toDouble();
  QgsGeometry::EndCapStyle capStyle = s.enumValue( QStringLiteral( "/qgis/digitizing/offset_cap_style" ),  QgsGeometry::CapRound );


  if ( QgsWkbTypes::geometryType( mOriginalGeometry.wkbType() ) == QgsWkbTypes::LineGeometry )
  {
    offsetGeom = mManipulatedGeometry.offsetCurve( offset, quadSegments, joinStyle, miterLimit );
  }
  else
  {
    offsetGeom = mManipulatedGeometry.buffer( offset, quadSegments, capStyle, joinStyle, miterLimit );
  }

  if ( !offsetGeom )
  {
    deleteRubberBandAndGeometry();
    deleteUserInputWidget();
    mLayer = nullptr;
    mGeometryModified = false;
    emit messageDiscarded();
    emit messageEmitted( tr( "Creating offset geometry failed: %1" ).arg( offsetGeom.lastError() ), Qgis::Critical );
  }
  else
  {
    mModifiedGeometry = offsetGeom;
    mRubberBand->setToGeometry( mModifiedGeometry, mLayer );
  }
}
Пример #4
0
void QgsMapToolAddPart::cadCanvasReleaseEvent( QgsMapMouseEvent *e )
{
  //check if we operate on a vector layer
  QgsVectorLayer *vlayer = currentVectorLayer();
  if ( !vlayer )
  {
    notifyNotVectorLayer();
    return;
  }

  if ( !vlayer->isEditable() )
  {
    notifyNotEditableLayer();
    return;
  }

  bool isGeometryEmpty = false;
  QgsFeatureList selectedFeatures = vlayer->selectedFeatures();
  if ( !selectedFeatures.isEmpty() && selectedFeatures.at( 0 ).geometry().isNull() )
    isGeometryEmpty = true;

  if ( !checkSelection() )
  {
    stopCapturing();
    return;
  }

  int errorCode = 0;
  switch ( mode() )
  {
    case CapturePoint:
    {
      QgsPoint layerPoint;
      QgsPointXY mapPoint = e->mapPoint();

      if ( nextPoint( QgsPoint( mapPoint ), layerPoint ) != 0 )
      {
        QgsDebugMsg( "nextPoint failed" );
        return;
      }

      vlayer->beginEditCommand( tr( "Part added" ) );
      errorCode = vlayer->addPart( QgsPointSequence() << layerPoint );
    }
    break;

    case CaptureLine:
    case CapturePolygon:
    {
      //add point to list and to rubber band
      if ( e->button() == Qt::LeftButton )
      {
        int error = addVertex( e->mapPoint(), e->mapPointMatch() );
        if ( error == 1 )
        {
          QgsDebugMsg( "current layer is not a vector layer" );
          return;
        }
        else if ( error == 2 )
        {
          //problem with coordinate transformation
          emit messageEmitted( tr( "Coordinate transform error. Cannot transform the point to the layers coordinate system" ), Qgis::Warning );
          return;
        }

        startCapturing();
        return;
      }
      else if ( e->button() != Qt::RightButton )
      {
        deleteTempRubberBand();

        return;
      }

      if ( !isCapturing() )
        return;

      if ( mode() == CapturePolygon )
      {
        closePolygon();
      }

      //does compoundcurve contain circular strings?
      //does provider support circular strings?
      bool hasCurvedSegments = captureCurve()->hasCurvedSegments();
      bool providerSupportsCurvedSegments = vlayer->dataProvider()->capabilities() & QgsVectorDataProvider::CircularGeometries;

      QgsCurve *curveToAdd = nullptr;
      if ( hasCurvedSegments && providerSupportsCurvedSegments )
      {
        curveToAdd = captureCurve()->clone();
      }
      else
      {
        curveToAdd = captureCurve()->curveToLine();
      }

      vlayer->beginEditCommand( tr( "Part added" ) );
      if ( mode() == CapturePolygon )
      {
        //avoid intersections
        QgsCurvePolygon *cp = new QgsCurvePolygon();
        cp->setExteriorRing( curveToAdd );
        QgsGeometry *geom = new QgsGeometry( cp );
        geom->avoidIntersections( QgsProject::instance()->avoidIntersectionsLayers() );

        const QgsCurvePolygon *cpGeom = qgsgeometry_cast<const QgsCurvePolygon *>( geom->constGet() );
        if ( !cpGeom )
        {
          stopCapturing();
          delete geom;
          vlayer->destroyEditCommand();
          return;
        }

        errorCode = vlayer->addPart( cpGeom->exteriorRing()->clone() );
        delete geom;
      }
      else
      {
        errorCode = vlayer->addPart( curveToAdd );
      }
      stopCapturing();
    }
    break;
    default:
      Q_ASSERT( !"invalid capture mode" );
      errorCode = 6;
      break;
  }

  QString errorMessage;
  switch ( errorCode )
  {
    case 0:
    {
      // remove previous message
      emit messageDiscarded();

      //add points to other features to keep topology up-to-date
      bool topologicalEditing = QgsProject::instance()->topologicalEditing();
      if ( topologicalEditing )
      {
        addTopologicalPoints( points() );
      }

      vlayer->endEditCommand();

      vlayer->triggerRepaint();

      if ( ( !isGeometryEmpty ) && QgsWkbTypes::isSingleType( vlayer->wkbType() ) )
      {
        emit messageEmitted( tr( "Add part: Feature geom is single part and you've added more than one" ), Qgis::Warning );
      }

      return;
    }

    case 1:
      errorMessage = tr( "Selected feature is not multi part." );
      break;

    case 2:
      errorMessage = tr( "New part's geometry is not valid." );
      break;

    case 3:
      errorMessage = tr( "New polygon ring not disjoint with existing polygons." );
      break;

    case 4:
      errorMessage = tr( "No feature selected. Please select a feature with the selection tool or in the attribute table" );
      break;

    case 5:
      errorMessage = tr( "Several features are selected. Please select only one feature to which an island should be added." );
      break;

    case 6:
      errorMessage = tr( "Selected geometry could not be found" );
      break;
  }

  emit messageEmitted( errorMessage, Qgis::Warning );
  vlayer->destroyEditCommand();
}
Пример #5
0
void QgsMapToolAddRing::canvasReleaseEvent( QMouseEvent * e )
{

  emit messageDiscarded();

  //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
      emit messageEmitted( tr( "Cannot transform the point to the layers coordinate system" ), QgsMessageBar::WARNING );
      return;
    }

    startCapturing();
  }
  else if ( e->button() == Qt::RightButton )
  {
    if ( !isCapturing() )
      return;

    deleteTempRubberBand();

    closePolygon();

    vlayer->beginEditCommand( tr( "Ring added" ) );
    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" );
      }
      emit messageEmitted( tr( "could not add ring since %1." ).arg( errorMessage ), QgsMessageBar::CRITICAL );
      vlayer->destroyEditCommand();
    }
    else
    {
      vlayer->endEditCommand();
    }

    stopCapturing();
  }
}
Пример #6
0
void QgsMapToolAddRing::cadCanvasReleaseEvent( QgsMapMouseEvent * e )
{

  emit messageDiscarded();

  //check if we operate on a vector layer
  QgsVectorLayer *vlayer = currentVectorLayer();

  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->mapPoint() );
    if ( error == 1 )
    {
      //current layer is not a vector layer
      return;
    }
    else if ( error == 2 )
    {
      //problem with coordinate transformation
      emit messageEmitted( tr( "Cannot transform the point to the layers coordinate system" ), QgsMessageBar::WARNING );
      return;
    }

    startCapturing();
  }
  else if ( e->button() == Qt::RightButton )
  {
    if ( !isCapturing() )
      return;

    deleteTempRubberBand();

    closePolygon();

    vlayer->beginEditCommand( tr( "Ring added" ) );

    //does compoundcurve contain circular strings?
    //does provider support circular strings?
    bool hasCurvedSegments = captureCurve()->hasCurvedSegments();
    bool providerSupportsCurvedSegments = vlayer->dataProvider()->capabilities() & QgsVectorDataProvider::CircularGeometries;

    QgsCurveV2* curveToAdd = 0;
    if ( hasCurvedSegments && providerSupportsCurvedSegments )
    {
      curveToAdd = dynamic_cast<QgsCurveV2*>( captureCurve()->clone() );
    }
    else
    {
      curveToAdd = captureCurve()->curveToLine();
    }

    int addRingReturnCode = vlayer->addRing( curveToAdd );
    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" );
      }
      emit messageEmitted( tr( "could not add ring since %1." ).arg( errorMessage ), QgsMessageBar::CRITICAL );
      vlayer->destroyEditCommand();
    }
    else
    {
      vlayer->endEditCommand();
    }

    stopCapturing();
  }
}
Пример #7
0
void QgsMapToolAddPart::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;
  }

  //inform user at the begin of the digitising action that the island tool only works if exactly one feature is selected
  int nSelectedFeatures = vlayer->selectedFeatureCount();
  QString selectionErrorMsg;
  if ( nSelectedFeatures < 1 )
  {
    selectionErrorMsg = tr( "No feature selected. Please select a feature with the selection tool or in the attribute table" );
  }
  else if ( nSelectedFeatures > 1 )
  {
    selectionErrorMsg = tr( "Several features are selected. Please select only one feature to which an part should be added." );
  }

  if ( !selectionErrorMsg.isEmpty() )
  {
    emit messageEmitted( tr( "Could not add part. %1" ).arg( selectionErrorMsg ), QgsMessageBar::WARNING );
    stopCapturing();
    return;
  }

  int errorCode;
  switch ( mode() )
  {
    case CapturePoint:
    {
      QgsPoint layerPoint;
      QgsPoint mapPoint;

      if ( nextPoint( e->pos(), layerPoint, mapPoint ) != 0 )
      {
        QgsDebugMsg( "nextPoint failed" );
        return;
      }

      vlayer->beginEditCommand( tr( "Part added" ) );
      errorCode = vlayer->addPart( QList<QgsPoint>() << layerPoint );
    }
    break;

    case CaptureLine:
    case CapturePolygon:
    {
      //add point to list and to rubber band
      if ( e->button() == Qt::LeftButton )
      {
        int error = addVertex( e->pos() );
        if ( error == 1 )
        {
          QgsDebugMsg( "current layer is not a vector layer" );
          return;
        }
        else if ( error == 2 )
        {
          //problem with coordinate transformation
          emit messageEmitted( tr( "Coordinate transform error. Cannot transform the point to the layers coordinate system" ), QgsMessageBar::WARNING );
          return;
        }

        startCapturing();
        return;
      }
      else if ( e->button() != Qt::RightButton )
      {
        deleteTempRubberBand();

        return;
      }

      if ( !isCapturing() )
        return;

      // we are now going to finish the capturing

      if ( mode() == CapturePolygon )
      {
        //close polygon
        closePolygon();
        //avoid intersections
        QgsGeometry* geom = QgsGeometry::fromPolygon( QgsPolygon() << points().toVector() );
        if ( geom )
        {
          geom->avoidIntersections();
          QgsPolygon poly = geom->asPolygon();
          if ( poly.size() < 1 )
          {
            stopCapturing();
            delete geom;
            vlayer->destroyEditCommand();
            return;
          }
          setPoints( geom->asPolygon()[0].toList() );
          delete geom;
        }
      }

      vlayer->beginEditCommand( tr( "Part added" ) );
      errorCode = vlayer->addPart( points() );

      stopCapturing();
    }
    break;
    default:
      Q_ASSERT( !"invalid capture mode" );
      errorCode = 6;
      break;
  }

  QString errorMessage;
  switch ( errorCode )
  {
    case 0:
    {
      // remove previous message
      emit messageDiscarded();

      //add points to other features to keep topology up-to-date
      int topologicalEditing = QgsProject::instance()->readNumEntry( "Digitizing", "/TopologicalEditing", 0 );
      if ( topologicalEditing )
      {
        addTopologicalPoints( points() );
      }

      vlayer->endEditCommand();

      mCanvas->refresh();
      return;
    }

    case 1:
      errorMessage = tr( "Selected feature is not multi part." );
      break;

    case 2:
      errorMessage = tr( "New part's geometry is not valid." );
      break;

    case 3:
      errorMessage = tr( "New polygon ring not disjoint with existing polygons." );
      break;

    case 4:
      errorMessage = tr( "No feature selected. Please select a feature with the selection tool or in the attribute table" );
      break;

    case 5:
      errorMessage = tr( "Several features are selected. Please select only one feature to which an island should be added." );
      break;

    case 6:
      errorMessage = tr( "Selected geometry could not be found" );
      break;
  }

  emit messageEmitted( errorMessage, QgsMessageBar::WARNING );
  vlayer->destroyEditCommand();
}