C++ (Cpp) createRubberBands示例

示例#1

文件： qgsmaptoolmovelabel.cpp 项目： Antoviscomi/QGIS

void QgsMapToolMoveLabel::canvasPressEvent( QgsMapMouseEvent* e )
{
  deleteRubberBands();

  if ( !labelAtPosition( e, mCurrentLabelPos ) )
  {
    return;
  }

  QgsMapLayer* layer = QgsMapLayerRegistry::instance()->mapLayer( mCurrentLabelPos.layerID );
  if ( !layer || !layer->isEditable() )
  {
    return;
  }

  int xCol, yCol;
  if ( labelMoveable( layer, xCol, yCol ) || diagramMoveable( layer, xCol, yCol ) )
  {
    mStartPointMapCoords = toMapCoordinates( e->pos() );
    QgsPoint referencePoint;
    if ( !rotationPoint( referencePoint, !preserveRotation(), false ) )
    {
      referencePoint.setX( mCurrentLabelPos.labelRect.xMinimum() );
      referencePoint.setY( mCurrentLabelPos.labelRect.yMinimum() );
    }
    mClickOffsetX = mStartPointMapCoords.x() - referencePoint.x();
    mClickOffsetY = mStartPointMapCoords.y() - referencePoint.y();
    createRubberBands();
  }
}

示例#2

文件： qgsmaptoolmovelabel.cpp 项目： PeterTFS/QGIS

void QgsMapToolMoveLabel::canvasPressEvent( QgsMapMouseEvent* e )
{
  deleteRubberBands();

  QgsLabelPosition labelPos;
  if ( !labelAtPosition( e, labelPos ) )
  {
    mCurrentLabel = LabelDetails();
    return;
  }

  mCurrentLabel = LabelDetails( labelPos );

  QgsVectorLayer* vlayer = mCurrentLabel.layer;
  if ( !vlayer || !vlayer->isEditable() )
  {
    return;
  }

  int xCol, yCol;
  if ( labelMoveable( vlayer, mCurrentLabel.settings, xCol, yCol ) ||
       diagramMoveable( vlayer, xCol, yCol ) )
  {
    mStartPointMapCoords = toMapCoordinates( e->pos() );
    QgsPoint referencePoint;
    if ( !currentLabelRotationPoint( referencePoint, !currentLabelPreserveRotation(), false ) )
    {
      referencePoint.setX( mCurrentLabel.pos.labelRect.xMinimum() );
      referencePoint.setY( mCurrentLabel.pos.labelRect.yMinimum() );
    }
    mClickOffsetX = mStartPointMapCoords.x() - referencePoint.x();
    mClickOffsetY = mStartPointMapCoords.y() - referencePoint.y();
    createRubberBands();
  }
}

示例#3

文件： qgsmaptoolrotatelabel.cpp 项目： NyakudyaA/QGIS

void QgsMapToolRotateLabel::canvasPressEvent( QgsMapMouseEvent* e )
{
  deleteRubberBands();

  QgsLabelPosition labelPos;
  if ( !labelAtPosition( e, labelPos ) )
  {
    mCurrentLabel = LabelDetails();
    return;
  }

  mCurrentLabel = LabelDetails( labelPos );

  if ( !mCurrentLabel.valid )
    return;

  // only rotate non-pinned OverPoint placements until other placements are supported in pal::Feature

  if ( !mCurrentLabel.pos.isPinned
       && mCurrentLabel.settings.placement != QgsPalLayerSettings::OverPoint )
  {
    return;
  }

  // rotate unpinned labels (i.e. no hali/vali settings) as if hali/vali was Center/Half
  if ( !currentLabelRotationPoint( mRotationPoint, false, !mCurrentLabel.pos.isPinned ) )
  {
    return;
  }

  if ( true )
  {
    mCurrentMouseAzimuth = azimuthToCCW( mRotationPoint.azimuth( toMapCoordinates( e->pos() ) ) );

    bool hasRotationValue;
    int rotationCol;
    if ( currentLabelDataDefinedRotation( mCurrentRotation, hasRotationValue, rotationCol, true ) )
    {
      if ( !hasRotationValue )
      {
        mCurrentRotation = 0;
      }
      mStartRotation = mCurrentRotation;
      createRubberBands();

      mRotationPreviewBox = createRotationPreviewBox();

      mRotationItem = new QgsPointRotationItem( mCanvas );
      mRotationItem->setOrientation( QgsPointRotationItem::Counterclockwise );
      mRotationItem->setSymbol( QgsApplication::getThemePixmap( "mActionRotatePointSymbols.svg" ).toImage() );
      mRotationItem->setPointLocation( mRotationPoint );
      mRotationItem->setSymbolRotation( mCurrentRotation );
    }
  }
}

示例#4

文件： qgsmaptoolchangelabelproperties.cpp 项目： RealworldSystems/Quantum-GIS

void QgsMapToolChangeLabelProperties::canvasPressEvent( QMouseEvent * e )
{
  deleteRubberBands();

  if ( !labelAtPosition( e, mCurrentLabelPos ) )
  {
    return;
  }

  QgsVectorLayer* vlayer = currentLayer();
  if ( !vlayer || !vlayer->isEditable() )
  {
    return;
  }

  createRubberBands();
}

示例#5

文件： qgsmaptoolchangelabelproperties.cpp 项目： 3liz/Quantum-GIS

void QgsMapToolChangeLabelProperties::canvasPressEvent( QgsMapMouseEvent* e )
{
  deleteRubberBands();

  QgsLabelPosition labelPos;
  if ( !labelAtPosition( e, labelPos ) || labelPos.isDiagram )
  {
    mCurrentLabel = LabelDetails();
    return;
  }

  mCurrentLabel = LabelDetails( labelPos );
  if ( !mCurrentLabel.valid || !mCurrentLabel.layer || !mCurrentLabel.layer->isEditable() )
  {
    return;
  }

  createRubberBands();
}

示例#6

文件： qgsmaptoolmovelabel.cpp 项目： AlisterH/Quantum-GIS

void QgsMapToolMoveLabel::canvasPressEvent( QgsMapMouseEvent *e )
{
  deleteRubberBands();

  QgsLabelPosition labelPos;
  if ( !labelAtPosition( e, labelPos ) )
  {
    mCurrentLabel = LabelDetails();
    return;
  }

  mCurrentLabel = LabelDetails( labelPos );

  QgsVectorLayer *vlayer = mCurrentLabel.layer;
  if ( !vlayer )
  {
    return;
  }

  int xCol = -1, yCol = -1;

  if ( !mCurrentLabel.pos.isDiagram && !labelMoveable( vlayer, mCurrentLabel.settings, xCol, yCol ) )
  {
    QgsPalIndexes indexes;

    if ( createAuxiliaryFields( indexes ) )
      return;

    if ( !labelMoveable( vlayer, mCurrentLabel.settings, xCol, yCol ) )
      return;

    xCol = indexes[ QgsPalLayerSettings::PositionX ];
    yCol = indexes[ QgsPalLayerSettings::PositionY ];
  }
  else if ( mCurrentLabel.pos.isDiagram && !diagramMoveable( vlayer, xCol, yCol ) )
  {
    QgsDiagramIndexes indexes;

    if ( createAuxiliaryFields( indexes ) )
      return;

    if ( !diagramMoveable( vlayer, xCol, yCol ) )
      return;

    xCol = indexes[ QgsDiagramLayerSettings::PositionX ];
    yCol = indexes[ QgsDiagramLayerSettings::PositionY ];
  }

  if ( xCol >= 0 && yCol >= 0 )
  {
    mStartPointMapCoords = toMapCoordinates( e->pos() );
    QgsPointXY referencePoint;
    if ( !currentLabelRotationPoint( referencePoint, !currentLabelPreserveRotation(), false ) )
    {
      referencePoint.setX( mCurrentLabel.pos.labelRect.xMinimum() );
      referencePoint.setY( mCurrentLabel.pos.labelRect.yMinimum() );
    }
    mClickOffsetX = mStartPointMapCoords.x() - referencePoint.x();
    mClickOffsetY = mStartPointMapCoords.y() - referencePoint.y();
    createRubberBands();
  }
}