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#include "tikzit.h"
#include "edgeitem.h"
#include <QPainterPath>
#include <QPen>
EdgeItem::EdgeItem(Edge *edge)
{
_edge = edge;
setFlag(QGraphicsItem::ItemIsSelectable);
QPen pen(Qt::black);
pen.setWidth(2);
setPen(pen);
_cp1Item = new QGraphicsEllipseItem(this);
_cp1Item->setParentItem(this);
_cp1Item->setRect(GLOBAL_SCALEF * (-0.05), GLOBAL_SCALEF * (-0.05),
GLOBAL_SCALEF * 0.1, GLOBAL_SCALEF * 0.1);
_cp1Item->setVisible(false);
_cp2Item = new QGraphicsEllipseItem(this);
_cp2Item->setParentItem(this);
_cp2Item->setRect(GLOBAL_SCALEF * (-0.05), GLOBAL_SCALEF * (-0.05),
GLOBAL_SCALEF * 0.1, GLOBAL_SCALEF * 0.1);
_cp2Item->setVisible(false);
readPos();
}
void EdgeItem::readPos()
{
//_edge->setAttributesFromData();
_edge->updateControls();
QPainterPath path;
path.moveTo (toScreen(_edge->tail()));
path.cubicTo(toScreen(_edge->cp1()),
toScreen(_edge->cp2()),
toScreen(_edge->head()));
setPath(path);
_cp1Item->setPos(toScreen(_edge->cp1()));
_cp2Item->setPos(toScreen(_edge->cp2()));
}
void EdgeItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *, QWidget *)
{
//QGraphicsPathItem::paint(painter, option, widget);
painter->setPen(pen());
painter->setBrush(Qt::NoBrush);
painter->drawPath(path());
if (isSelected()) {
QColor draw;
QColor draw1;
QColor fill;
if (_edge->basicBendMode()) {
draw = Qt::blue;
draw1 = QColor(100,100,255,100);
fill = QColor(200,200,255,50);
} else {
draw = Qt::darkGreen;
draw1 = QColor(0, 150, 0, 50);
fill = QColor(200,255,200,150);
}
painter->setPen(QPen(draw1));
float r = GLOBAL_SCALEF * _edge->cpDist();
painter->drawEllipse(toScreen(_edge->source()->point()), r, r);
painter->drawEllipse(toScreen(_edge->target()->point()), r, r);
painter->setPen(QPen(draw));
painter->setBrush(QBrush(fill));
painter->drawLine(toScreen(_edge->tail()), toScreen(_edge->cp1()));
painter->drawLine(toScreen(_edge->head()), toScreen(_edge->cp2()));
//painter->drawEllipse(toScreen(_edge->cp1()), r, r);
//painter->drawEllipse(toScreen(_edge->cp2()), r, r);
_cp1Item->setPen(QPen(draw));
_cp1Item->setBrush(QBrush(fill));
_cp1Item->setVisible(true);
_cp2Item->setPen(QPen(draw));
_cp2Item->setBrush(QBrush(fill));
_cp2Item->setVisible(true);
r = GLOBAL_SCALEF * 0.05;
painter->setPen(QPen(Qt::black));
painter->setBrush(QBrush(QColor(255,255,255,200)));
painter->drawEllipse(toScreen(_edge->mid()), r, r);
} else {
_cp1Item->setVisible(false);
_cp2Item->setVisible(false);
}
}
QRectF EdgeItem::boundingRect() const
{
float r = GLOBAL_SCALEF * (_edge->cpDist() + 0.2);
return shape().boundingRect().adjusted(-r,-r,r,r);
}
QPainterPath EdgeItem::shape() const
{
// get the shape of the edge, and expand a bit to make selection easier
QPainterPath oldShape = QGraphicsPathItem::shape();
QPainterPathStroker stroker;
stroker.setWidth(5);
stroker.setJoinStyle(Qt::MiterJoin);
QPainterPath newShape = (stroker.createStroke(oldShape) + oldShape).simplified();
return newShape;
}
Edge *EdgeItem::edge() const
{
return _edge;
}
QGraphicsEllipseItem *EdgeItem::cp1Item() const
{
return _cp1Item;
}
QGraphicsEllipseItem *EdgeItem::cp2Item() const
{
return _cp2Item;
}
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