void ElbowGrabber::paint(QPainter *painter, const QStyleOptionGraphicsItem *, QWidget *)
{
painter->setRenderHint(QPainter::Antialiasing, true);
painter->setRenderHint(QPainter::SmoothPixmapTransform, true);
if ( _paintStyle == kBox)
{
// fill the box with solid color, use sharp corners
_outterborderPen.setCapStyle(Qt::RoundCap);
_outterborderPen.setStyle(Qt::SolidLine);
painter->setPen(_outterborderPen);
QPointF topLeft (0-(_width/2.0), 0-(_height/2.0));
QPointF bottomRight ( _width/2.0 ,_height/2.0);
QRectF rect (topLeft, bottomRight);
QBrush brush (Qt::SolidPattern);
brush.setColor (_outterborderColor);
painter->drawEllipse(rect);
painter->fillRect(rect, brush);
// painter->drawRect(rect);
// painter->fillRect(rect,brush);
}
else if (_paintStyle == kCrossHair)
{
painter->setPen( _outterborderColor );
// center of the box is at 0,0
painter->drawLine( QPointF(0,0), QPointF(0,-(_height/2)) );
painter->drawLine( QPointF(0,0), QPointF(0, (_height/2)) );
painter->drawLine( QPointF(0,0), QPointF(-(_width/2) , 0) );
painter->drawLine( QPointF(0,0), QPointF((_width/2) , 0) );
}
else if (_paintStyle == kArrowHead)
{
// qDebug()<< "setting arrowhead angle: " << _arrowAngle;
updateArrowHead();
_arrowHead->setRotation(_arrowAngle);
_arrowHead->setColor(_outterborderPen.color());
_arrowHead->setWidth(_width);
_arrowHead->setHeight(_height);
_arrowHead->setPos( - _width/2, - _height/2);
_arrowHead->update();
}
}
void GraphicsEdge::notify(Subject *subject)
{
if (_edge != subject)
{
// first remove the old edge
dynamic_cast<GraphDrawingScene*>(scene())->removeFromMap(_edge);
_edge = (Edge*)subject;
dynamic_cast<GraphDrawingScene*>(scene())->addToMap(_edge, this);
dynamic_cast<GraphDrawingScene*>(scene())->uncashEdges();
}
// if the subject is deleted, tell the scene that this observer should be removed at the next update
if(_edge->getWillBeDeleted())
{
_edge->unregisterObserver(this);
// don't set _edge to NULL because we still need the old point to locate what should be removed
assert(dynamic_cast<GraphDrawingScene*>(scene()));
dynamic_cast<GraphDrawingScene*>(scene())->deleteMeAtNextUpdate(this);
return ; // no need to update if we will delete next time
}
_isSelfEdge = _edge->isSelfEdge();
_label = QString::fromStdString(_edge->getLabel().getLabelString());
_color.setRgb(_edge->getColor().getRed(), _edge->getColor().getGreen(), _edge->getColor().getBlue());
if (_edge->getColor() == RGB::colorSelection())
setZValue(-1);
else
setZValue(_zValue);
_brush.setColor(_color);
_pen.setColor(_color);
// calculate how the arrowhead should look, now GraphicArrowHead::getPolygon() will return the polygon that represents the arrowhead
setLine(_edge->getSource()->getCoords().getX(),
_edge->getSource()->getCoords().getY(),
_edge->getTarget()->getCoords().getX(),
_edge->getTarget()->getCoords().getY()
);
calculateLabelPosition();
updateArrowHead();
}
void RLeaderData::setArrowHead(bool on) {
arrowHead = on;
updateArrowHead();
}
