Esempio n. 1
0
void QgsMapToolAnnotation::canvasPressEvent( QgsMapMouseEvent *e )
{
  if ( !mCanvas )
  {
    return;
  }

  mLastMousePosition = e->pos();

  QgsMapCanvasAnnotationItem *item = selectedItem();
  if ( item )
  {
    mCurrentMoveAction = item->moveActionForPosition( e->pos() );
    if ( mCurrentMoveAction != QgsMapCanvasAnnotationItem::NoAction )
    {
      return;
    }
  }

  if ( !item || mCurrentMoveAction == QgsMapCanvasAnnotationItem::NoAction )
  {
    //select a new item if there is one at this position
    mCanvas->scene()->clearSelection();
    QgsMapCanvasAnnotationItem *existingItem = itemAtPos( e->pos() );
    if ( existingItem )
    {
      existingItem->setSelected( true );
    }
    else
    {
      //otherwise create new one
      QgsAnnotation *annotation = createItem();
      if ( annotation )
      {
        QgsPointXY mapPos = transformCanvasToAnnotation( toMapCoordinates( e->pos() ), annotation );
        annotation->setMapPosition( mapPos );
        annotation->setMapPositionCrs( mCanvas->mapSettings().destinationCrs() );
        annotation->setRelativePosition( QPointF( e->pos().x() / mCanvas->width(),
                                         e->pos().y() / mCanvas->height() ) );
        annotation->setFrameSizeMm( QSizeF( 50, 25 ) );

        QgsProject::instance()->annotationManager()->addAnnotation( annotation );

        // select newly added item
        const auto constItems = mCanvas->items();
        for ( QGraphicsItem *item : constItems )
        {
          if ( QgsMapCanvasAnnotationItem *annotationItem = dynamic_cast< QgsMapCanvasAnnotationItem * >( item ) )
          {
            if ( annotationItem->annotation() == annotation )
            {
              annotationItem->setSelected( true );
              break;
            }
          }
        }
      }
    }
  }
}
Esempio n. 2
0
void QgsMapToolAnnotation::canvasMoveEvent( QgsMapMouseEvent *e )
{
  QgsMapCanvasAnnotationItem *item = selectedItem();
  if ( !item || !item->annotation() )
    return;

  QgsAnnotation *annotation = item->annotation();

  if ( e->buttons() & Qt::LeftButton )
  {
    if ( mCurrentMoveAction == QgsMapCanvasAnnotationItem::MoveMapPosition )
    {
      QgsPointXY mapPos = transformCanvasToAnnotation( e->snapPoint(), annotation );
      annotation->setMapPosition( mapPos );
      annotation->setRelativePosition( QPointF( e->pos().x() / mCanvas->width(),
                                       e->pos().y() / mCanvas->height() ) );
      item->update();
      QgsProject::instance()->setDirty( true );
    }
    else if ( mCurrentMoveAction == QgsMapCanvasAnnotationItem::MoveFramePosition )
    {
      QPointF newCanvasPos = item->pos() + ( e->pos() - mLastMousePosition );
      if ( annotation->hasFixedMapPosition() )
      {
        const double pixelToMmScale = 25.4 / mCanvas->logicalDpiX();
        const double deltaX = pixelToMmScale * ( e->pos().x() - mLastMousePosition.x() );
        const double deltaY = pixelToMmScale * ( e->pos().y() - mLastMousePosition.y() );
        annotation->setFrameOffsetFromReferencePointMm( QPointF( annotation->frameOffsetFromReferencePointMm().x() + deltaX,
            annotation->frameOffsetFromReferencePointMm().y() + deltaY ) );
        annotation->setRelativePosition( QPointF( newCanvasPos.x() / mCanvas->width(),
                                         newCanvasPos.y() / mCanvas->height() ) );
      }
      else
      {
        QgsPointXY mapPos = transformCanvasToAnnotation( toMapCoordinates( newCanvasPos.toPoint() ), annotation );
        annotation->setMapPosition( mapPos );
        annotation->setRelativePosition( QPointF( newCanvasPos.x() / mCanvas->width(),
                                         newCanvasPos.y() / mCanvas->height() ) );
      }
      item->update();
      QgsProject::instance()->setDirty( true );
    }
    else if ( mCurrentMoveAction != QgsMapCanvasAnnotationItem::NoAction )
    {
      //handle the frame resize actions

      const double pixelToMmScale = 25.4 / mCanvas->logicalDpiX();

      QSizeF size = annotation->frameSizeMm();
      double xmin = annotation->frameOffsetFromReferencePointMm().x();
      double ymin = annotation->frameOffsetFromReferencePointMm().y();
      double xmax = xmin + size.width();
      double ymax = ymin + size.height();
      double relPosX = annotation->relativePosition().x();
      double relPosY = annotation->relativePosition().y();

      if ( mCurrentMoveAction == QgsMapCanvasAnnotationItem::ResizeFrameRight ||
           mCurrentMoveAction == QgsMapCanvasAnnotationItem::ResizeFrameRightDown ||
           mCurrentMoveAction == QgsMapCanvasAnnotationItem::ResizeFrameRightUp )
      {
        xmax += pixelToMmScale * ( e->pos().x() - mLastMousePosition.x() );
      }
      if ( mCurrentMoveAction == QgsMapCanvasAnnotationItem::ResizeFrameLeft ||
           mCurrentMoveAction == QgsMapCanvasAnnotationItem::ResizeFrameLeftDown ||
           mCurrentMoveAction == QgsMapCanvasAnnotationItem::ResizeFrameLeftUp )
      {
        xmin += pixelToMmScale * ( e->pos().x() - mLastMousePosition.x() );
        relPosX = ( relPosX * mCanvas->width() + e->pos().x() - mLastMousePosition.x() ) / static_cast<double>( mCanvas->width() );
      }
      if ( mCurrentMoveAction == QgsMapCanvasAnnotationItem::ResizeFrameUp ||
           mCurrentMoveAction == QgsMapCanvasAnnotationItem::ResizeFrameLeftUp ||
           mCurrentMoveAction == QgsMapCanvasAnnotationItem::ResizeFrameRightUp )
      {
        ymin += pixelToMmScale * ( e->pos().y() - mLastMousePosition.y() );
        relPosY = ( relPosY * mCanvas->height() + e->pos().y() - mLastMousePosition.y() ) / static_cast<double>( mCanvas->height() );
      }
      if ( mCurrentMoveAction == QgsMapCanvasAnnotationItem::ResizeFrameDown ||
           mCurrentMoveAction == QgsMapCanvasAnnotationItem::ResizeFrameLeftDown ||
           mCurrentMoveAction == QgsMapCanvasAnnotationItem::ResizeFrameRightDown )
      {
        ymax += pixelToMmScale * ( e->pos().y() - mLastMousePosition.y() );
      }

      //switch min / max if necessary
      double tmp;
      if ( xmax < xmin )
      {
        tmp = xmax;
        xmax = xmin;
        xmin = tmp;
      }
      if ( ymax < ymin )
      {
        tmp = ymax;
        ymax = ymin;
        ymin = tmp;
      }

      annotation->setFrameOffsetFromReferencePointMm( QPointF( xmin, ymin ) );
      annotation->setFrameSizeMm( QSizeF( xmax - xmin, ymax - ymin ) );
      annotation->setRelativePosition( QPointF( relPosX, relPosY ) );
      item->update();
      QgsProject::instance()->setDirty( true );
    }
  }
  else if ( item )
  {
    QgsMapCanvasAnnotationItem::MouseMoveAction moveAction = item->moveActionForPosition( e->pos() );
    if ( mCanvas )
    {
      mCanvas->setCursor( QCursor( item->cursorShapeForAction( moveAction ) ) );
    }
  }
  mLastMousePosition = e->pos();
}