orK/src/map.cpp

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#include "map.h"

Map::Map( QWidget * parent ) : QGraphicsView( parent )
{
        _name = "" ;
        _scene = new QGraphicsScene( this ) ;
        setScene( _scene ) ;
        setDragMode( QGraphicsView::ScrollHandDrag ) ;
}

Map::Map( QGraphicsScene *scene, QWidget * parent ) : QGraphicsView( scene, parent )
{
        setDragMode( QGraphicsView::ScrollHandDrag ) ;
}

void Map::setName( const QString &name )
{
        _name = name ;
}

QString Map::name()
{
        return _name ;
}


void Map::addItem( QGraphicsItem *item )
{
        scene()->addItem( item ) ;
}

void Map::zoomIn()
{
        scaleView( pow( 2., 24. / 240.0), QPoint( width() / 2, height() / 2 ) ) ;
}

void Map::zoomOut()
{
        scaleView( pow( 2., -24. / 240.0), QPoint( width() / 2, height() / 2 ) ) ;
}

void Map::scaleDefault()
{
        setMatrix( QMatrix() ) ; // apply identity matrix
}

void Map::fitView()
{
        fitInView( scene()->sceneRect(), Qt::KeepAspectRatio ) ;
}

void Map::wheelEvent( QWheelEvent *event )
{
        scaleView( pow( 2., event->delta() / 240.0 ), event->pos() ) ;
}

void Map::scaleView( qreal scaleFactor )
{
        qreal factor = matrix().scale( scaleFactor, scaleFactor ).mapRect( QRectF( 0, 0, 1, 1 ) ).width() ;
        if( factor < 0.07 || factor > 100 )
                return ;

        scale(scaleFactor, scaleFactor) ;
}

void Map::scaleView( qreal scaleFactor, const QPoint &pos )
{
        scaleView( scaleFactor ) ;
        centerOn( mapToScene( pos ) ) ;
}

void Map::closeEvent( QCloseEvent * event )
{
        emit mapClosed() ;
        emit mapSetVisible( FALSE ) ;
        event->ignore() ;
}

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