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;
}
}
}
}
}
}
}
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();
}