QgsComposerItem::~QgsComposerItem()
{
if ( mComposition )
{
mComposition->removeItemFromZList( this );
}
delete mBoundingResizeRectangle;
delete mEffect;
deleteAlignItems();
}
void QgsComposerItem::mouseReleaseEvent( QGraphicsSceneMouseEvent * event )
{
if ( mItemPositionLocked )
{
return;
}
if ( !isSelected() )
{
return;
}
//delete frame rectangle
if ( mBoundingResizeRectangle )
{
scene()->removeItem( mBoundingResizeRectangle );
delete mBoundingResizeRectangle;
mBoundingResizeRectangle = 0;
}
QPointF mouseMoveStopPoint = event->lastScenePos();
double diffX = mouseMoveStopPoint.x() - mMouseMoveStartPos.x();
double diffY = mouseMoveStopPoint.y() - mMouseMoveStartPos.y();
//it was only a click
if ( qAbs( diffX ) < std::numeric_limits<double>::min() && qAbs( diffY ) < std::numeric_limits<double>::min() )
{
return;
}
beginItemCommand( tr( "Change item position" ) );
changeItemRectangle( mouseMoveStopPoint, mMouseMoveStartPos, this, diffX, diffY, this );
endItemCommand();
deleteAlignItems();
//reset default action
mCurrentMouseMoveAction = QgsComposerItem::MoveItem;
setCursor( Qt::ArrowCursor );
}
void QgsComposerItem::mousePressEvent( QGraphicsSceneMouseEvent * event )
{
if ( mItemPositionLocked )
{
return;
}
if ( !isSelected() )
{
return;
}
//set current position and type of mouse move action
mMouseMoveStartPos = event->lastScenePos();
mLastMouseEventPos = event->lastScenePos();
mCurrentMouseMoveAction = mouseMoveActionForPosition( event->pos() );
//remove the old rubber band item if it is still there
if ( mBoundingResizeRectangle )
{
scene()->removeItem( mBoundingResizeRectangle );
delete mBoundingResizeRectangle;
mBoundingResizeRectangle = 0;
}
deleteAlignItems();
//create and show bounding rectangle
mBoundingResizeRectangle = new QGraphicsRectItem( 0 );
scene()->addItem( mBoundingResizeRectangle );
mBoundingResizeRectangle->setRect( QRectF( 0, 0, rect().width(), rect().height() ) );
QTransform resizeTransform;
resizeTransform.translate( transform().dx(), transform().dy() );
mBoundingResizeRectangle->setTransform( resizeTransform );
mBoundingResizeRectangle->setBrush( Qt::NoBrush );
mBoundingResizeRectangle->setPen( QPen( QColor( 0, 0, 0 ), 0 ) );
mBoundingResizeRectangle->setZValue( 90 );
mBoundingResizeRectangle->show();
}
void QgsComposerItem::changeItemRectangle( const QPointF& currentPosition,
const QPointF& mouseMoveStartPos,
const QGraphicsRectItem* originalItem,
double dx, double dy,
QGraphicsRectItem* changeItem )
{
Q_UNUSED( dx );
Q_UNUSED( dy );
if ( !changeItem || !originalItem || !mComposition )
{
return;
}
//test if change item is a composer item. If so, prefer call to setSceneRect() instead of setTransform() and setRect()
QgsComposerItem* changeComposerItem = dynamic_cast<QgsComposerItem *>( changeItem );
double mx = 0.0, my = 0.0, rx = 0.0, ry = 0.0;
QPointF snappedPosition = mComposition->snapPointToGrid( currentPosition );
//snap to grid and align to other items
if ( mComposition->alignmentSnap() && mCurrentMouseMoveAction != QgsComposerItem::MoveItem )
{
double alignX = 0;
double alignY = 0;
snappedPosition = mComposition->alignPos( snappedPosition, dynamic_cast<const QgsComposerItem*>( originalItem ), alignX, alignY );
if ( alignX != -1 )
{
QGraphicsLineItem* item = hAlignSnapItem();
item->setLine( QLineF( alignX, 0, alignX, mComposition->paperHeight() ) );
item->show();
}
else
{
deleteHAlignSnapItem();
}
if ( alignY != -1 )
{
QGraphicsLineItem* item = vAlignSnapItem();
item->setLine( QLineF( 0, alignY, mComposition->paperWidth(), alignY ) );
item->show();
}
else
{
deleteVAlignSnapItem();
}
}
double diffX = 0;
double diffY = 0;
switch ( mCurrentMouseMoveAction )
{
//vertical resize
case QgsComposerItem::ResizeUp:
diffY = snappedPosition.y() - originalItem->transform().dy();
mx = 0; my = diffY; rx = 0; ry = -diffY;
break;
case QgsComposerItem::ResizeDown:
diffY = snappedPosition.y() - ( originalItem->transform().dy() + originalItem->rect().height() );
mx = 0; my = 0; rx = 0; ry = diffY;
break;
//horizontal resize
case QgsComposerItem::ResizeLeft:
diffX = snappedPosition.x() - originalItem->transform().dx();
mx = diffX, my = 0; rx = -diffX; ry = 0;
break;
case QgsComposerItem::ResizeRight:
diffX = snappedPosition.x() - ( originalItem->transform().dx() + originalItem->rect().width() );
mx = 0; my = 0; rx = diffX, ry = 0;
break;
//diagonal resize
case QgsComposerItem::ResizeLeftUp:
diffX = snappedPosition.x() - originalItem->transform().dx();
diffY = snappedPosition.y() - originalItem->transform().dy();
mx = diffX, my = diffY; rx = -diffX; ry = -diffY;
break;
case QgsComposerItem::ResizeRightDown:
diffX = snappedPosition.x() - ( originalItem->transform().dx() + originalItem->rect().width() );
diffY = snappedPosition.y() - ( originalItem->transform().dy() + originalItem->rect().height() );
mx = 0; my = 0; rx = diffX, ry = diffY;
break;
case QgsComposerItem::ResizeRightUp:
diffX = snappedPosition.x() - ( originalItem->transform().dx() + originalItem->rect().width() );
diffY = snappedPosition.y() - originalItem->transform().dy();
mx = 0; my = diffY, rx = diffX, ry = -diffY;
break;
case QgsComposerItem::ResizeLeftDown:
diffX = snappedPosition.x() - originalItem->transform().dx();
diffY = snappedPosition.y() - ( originalItem->transform().dy() + originalItem->rect().height() );
mx = diffX, my = 0; rx = -diffX; ry = diffY;
break;
case QgsComposerItem::MoveItem:
{
//calculate total move difference
double moveX = currentPosition.x() - mouseMoveStartPos.x();
double moveY = currentPosition.y() - mouseMoveStartPos.y();
QPointF upperLeftPoint( originalItem->transform().dx() + moveX, originalItem->transform().dy() + moveY );
QPointF snappedLeftPoint = mComposition->snapPointToGrid( upperLeftPoint );
if ( snappedLeftPoint != upperLeftPoint ) //don't do align snap if grid snap has been done
{
deleteAlignItems();
}
else if ( mComposition->alignmentSnap() ) //align item
{
double alignX = 0;
double alignY = 0;
snappedLeftPoint = mComposition->alignItem( dynamic_cast<const QgsComposerItem*>( originalItem ), alignX, alignY, moveX, moveY );
if ( alignX != -1 )
{
QGraphicsLineItem* item = hAlignSnapItem();
int numPages = mComposition->numPages();
double yLineCoord = 300; //default in case there is no single page
if ( numPages > 0 )
{
yLineCoord = mComposition->paperHeight() * numPages + mComposition->spaceBetweenPages() * ( numPages - 1 );
}
item->setLine( QLineF( alignX, 0, alignX, yLineCoord ) );
item->show();
}
else
{
deleteHAlignSnapItem();
}
if ( alignY != -1 )
{
QGraphicsLineItem* item = vAlignSnapItem();
item->setLine( QLineF( 0, alignY, mComposition->paperWidth(), alignY ) );
item->show();
}
else
{
deleteVAlignSnapItem();
}
}
double moveRectX = snappedLeftPoint.x() - originalItem->transform().dx();
double moveRectY = snappedLeftPoint.y() - originalItem->transform().dy();
if ( !changeComposerItem )
{
QTransform moveTransform;
moveTransform.translate( originalItem->transform().dx() + moveRectX, originalItem->transform().dy() + moveRectY );
changeItem->setTransform( moveTransform );
}
else //for composer items, we prefer setSceneRect as subclasses can implement custom behaviour (e.g. item group)
{
changeComposerItem->setSceneRect( QRectF( originalItem->transform().dx() + moveRectX,
originalItem->transform().dy() + moveRectY,
originalItem->rect().width(), originalItem->rect().height() ) );
changeComposerItem->updateItem();
}
}
return;
case QgsComposerItem::NoAction:
break;
}
if ( !changeComposerItem )
{
QTransform itemTransform;
itemTransform.translate( originalItem->transform().dx() + mx, originalItem->transform().dy() + my );
changeItem->setTransform( itemTransform );
QRectF itemRect( 0, 0, originalItem->rect().width() + rx, originalItem->rect().height() + ry );
changeItem->setRect( itemRect );
}
else //for composer items, we prefer setSceneRect as subclasses can implement custom behaviour (e.g. item group)
{
changeComposerItem->setSceneRect( QRectF( originalItem->transform().dx() + mx, originalItem->transform().dy() + my,
originalItem->rect().width() + rx, originalItem->rect().height() + ry ) );
changeComposerItem->updateItem();
}
}
