Connection slots are now managed by their own object, and linking is now done to their positions.

This commit is contained in:
dfighter1985 2014-09-13 22:26:11 +02:00
parent ab7c580ce7
commit 4591673dfe
3 changed files with 117 additions and 46 deletions

View file

@ -53,7 +53,7 @@ void ExpressionLink::unlink()
void ExpressionLink::nodeMoved()
{
setLine( QLineF( m_from->pos(), m_to->pos() ) );
setLine( QLineF( m_from->slotPos( 0 ), m_to->slotPos( 0 ) ) );
}
void ExpressionLink::paint( QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget )

View file

@ -22,19 +22,92 @@
#include <QPainter>
#include <QStyleOption>
class NodeSlot
{
public:
NodeSlot( const QPoint &tl, const QPoint &ttl, const QString &text )
{
m_tl = tl;
m_ttl = ttl;
m_text = text;
m_tw = 25.0;
m_th = 12.0;
m_wh = 10.0;
}
~NodeSlot()
{
}
QPointF pos() const{
QPointF p;
p.setX( m_tl.x() + m_wh / 2.0 );
p.setY( m_tl.y() + m_wh / 2.0 );
return p;
}
void paint( QPainter *painter )
{
QBrush boxBrush;
QPen p;
boxBrush.setColor( Qt::black );
boxBrush.setStyle( Qt::SolidPattern );
p.setColor( Qt::black );
painter->setPen( p );
QRectF box;
QRectF tbox;
box.setTopLeft( m_tl );
box.setHeight( m_wh );
box.setWidth( m_wh );
painter->fillRect( box, boxBrush );
tbox.setTopLeft( m_ttl );
tbox.setHeight( m_th );
tbox.setWidth( m_tw );
painter->drawText( tbox, Qt::AlignRight, m_text );
}
private:
QPoint m_tl;
QPoint m_ttl;
QString m_text;
qreal m_th;
qreal m_tw;
qreal m_wh;
};
ExpressionNode::ExpressionNode( QGraphicsItem *parent ) :
QGraphicsItem( parent )
{
m_link = NULL;
m_w = 100;
m_h = 100;
createSlots();
}
ExpressionNode::~ExpressionNode()
{
qDeleteAll( m_slots );
m_slots.clear();
}
QRectF ExpressionNode::boundingRect() const
{
return QRectF( 0, 0, 100, 100 );
return QRectF( 0, 0, m_w, m_h );
}
void ExpressionNode::paint( QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget )
@ -74,10 +147,20 @@ void ExpressionNode::paint( QPainter *painter, const QStyleOptionGraphicsItem *o
painter->drawRect( rect );
painter->drawRect( header );
paintConnections( painter );
paintSlots( painter );
}
QPointF ExpressionNode::slotPos( int slot ) const
{
const NodeSlot *s = m_slots[ slot ];
QPointF sp = s->pos();
QPointF mp = pos();
mp += sp;
return mp;
}
void ExpressionNode::mouseMoveEvent( QGraphicsSceneMouseEvent *e )
{
if( m_link != NULL )
@ -86,54 +169,33 @@ void ExpressionNode::mouseMoveEvent( QGraphicsSceneMouseEvent *e )
QGraphicsItem::mouseMoveEvent( e );
}
void ExpressionNode::paintConnections( QPainter *painter )
void ExpressionNode::createSlots()
{
QRectF rect = boundingRect();
QBrush boxBrush;
QPen p;
boxBrush.setColor( Qt::black );
boxBrush.setStyle( Qt::SolidPattern );
p.setColor( Qt::black );
QRectF box = rect;
QRectF tbox = rect;
qreal wh = 10.0;
qreal tw = 25.0;
qreal th = 12.0;
box.setTopLeft( QPoint( 0, rect.height() * 0.5 ) );
box.setHeight( wh );
box.setWidth( wh );
painter->fillRect( box, boxBrush );
tbox.setTopLeft( QPoint( 15, rect.height() * 0.50 ) );
tbox.setHeight( th );
tbox.setWidth( tw );
painter->setPen( p );
painter->drawText( tbox, Qt::AlignCenter, "Out" );
// First create the "Out" slot
qreal x = 0.0;
qreal y = m_h * 0.5;
qreal tx = 10;
qreal ty = m_h * 0.5 - 2;
m_slots.push_back( new NodeSlot( QPoint( x, y ), QPoint( tx, ty ), "Out" ) );
// Then the rest of them
for( int i = 0; i < 3; i++ )
{
qreal x = rect.width() - wh;
qreal y = 30 + i * 20;
qreal tx = x - 5 - tw;
qreal ty = y - 2;
x = m_w - 10;
y = 30 + i * 20.0;
tx = x - 5 - 25.0;
ty = y - 2;
box.setTopLeft( QPoint( x, y ) );
box.setHeight( wh );
box.setWidth( wh );
m_slots.push_back( new NodeSlot( QPoint( x, y ), QPoint( tx, ty ), QString( 'A' + i ) ) );
}
}
painter->fillRect( box, boxBrush );
tbox.setTopLeft( QPoint( tx, ty ) );
tbox.setHeight( th );
tbox.setWidth( tw );
QString text = 'A' + i;
painter->drawText( tbox, Qt::AlignRight, text );
void ExpressionNode::paintSlots( QPainter *painter )
{
for( int i = 0; i < 4; i++ )
{
NodeSlot *slot = m_slots[ i ];
slot->paint( painter );
}
}

View file

@ -21,8 +21,10 @@
#define EXPRESSION_NODE
#include <QGraphicsItem>
#include <QList>
class ExpressionLink;
class NodeSlot;
class ExpressionNode : public QGraphicsItem
{
@ -36,14 +38,21 @@ public:
void setLink( ExpressionLink *link ){ m_link = link; }
ExpressionLink* link() const{ return m_link; }
QPointF slotPos( int slot ) const;
protected:
void mouseMoveEvent( QGraphicsSceneMouseEvent *e );
private:
void paintConnections( QPainter *painter );
void createSlots();
void paintSlots( QPainter *painter );
ExpressionLink *m_link;
qreal m_w;
qreal m_h;
QList< NodeSlot* > m_slots;
};
#endif