Path Pathfinder::get_path(Path_type type, Tripoint start, Tripoint end)
{
switch (type) {
case PATH_NULL:
case PATH_LINE:
return path_line(start, end);
case PATH_A_STAR:
return path_a_star(start, end);
default:
return path_line(start, end);
}
return path_line(start, end);
}
void TOPPASEdge::paint(QPainter * painter, const QStyleOptionGraphicsItem * /*option*/, QWidget * /*widget*/)
{
painter->setBrush(Qt::white);
QPen pen(color_);
if (isSelected())
{
pen.setWidth(3);
}
else
{
pen.setWidth(2);
}
TOPPASToolVertex* ttv_source = qobject_cast<TOPPASToolVertex*>(this->getSourceVertex());
// when copying parameters (using CTRL); only for incomplete edges drawn from tool nodes
if (QApplication::keyboardModifiers() && Qt::ControlModifier && !this->to_ && ttv_source)
{
pen.setColor(Qt::darkMagenta);
pen.setWidth(1);
}
painter->setPen(pen);
// angle of line
qreal angle = -QLineF(endPos(), startPos()).angle() + 180; // negate since angle() reports counter-clockwise; +180 since painter.rotate() is more intuivite then
// draw the actual line
QPainterPath path_line(startPos());
path_line.lineTo(endPos());
painter->drawPath(path_line);
// print names
qreal text_angle = angle;
bool invert_text_direction = endPos().x() < startPos().x();
if (invert_text_direction)
{
text_angle += 180;
}
QPainterPath path_line_short(borderPoint_(false));
path_line_short.lineTo(endPos());
// y offset for printing text; we add -1 to make "_" in param names visible (e.g. in "out_annotation")
// otherwise they are too close to the edge itself
int y_text = -pen.width() - 1;
// source name
QString str = getSourceOutParamName();
if (!str.isEmpty())
{
painter->save(); // hard to avoid multiple calls to save() and restore() since we first translate and then rotate
QPointF point = path_line_short.pointAtPercent(0.05);
painter->translate(point);
painter->rotate(text_angle);
if (invert_text_direction)
{
QFontMetrics fm(painter->fontMetrics());
int text_width=fm.width(str);
painter->drawText(QPoint(-text_width, y_text), str);
}
else
{
painter->drawText(QPoint(0, y_text), str);
}
painter->restore();
}
// target name
const qreal arrow_width = 10; // required multiple times, so defined here to avoid inconsistencies
str = getTargetInParamName();
if (!str.isEmpty())
{
painter->save();
// qreal pc = path_line_short.percentAtLength(10);
QPointF point = path_line_short.pointAtPercent(0.95);
painter->translate(point);
painter->rotate(text_angle);
QFontMetrics fm(painter->fontMetrics());
int text_width = fm.width(str);
int text_height = fm.height(); // shift text below the edge by its own height
if (invert_text_direction)
{
painter->drawText(QPoint(arrow_width, text_height + y_text), str);
}
else
{
painter->drawText(QPoint(-text_width - arrow_width, text_height + y_text), str);
}
painter->restore();
}
// draw arrow head
painter->save();
painter->translate(endPos());
painter->rotate(angle);
QPainterPath path;
path.moveTo(QPointF(0, 0));
path.lineTo(QPointF(-arrow_width, 4));
path.lineTo(QPointF(-arrow_width, -4));
path.closeSubpath();
painter->drawPath(path);
painter->restore();
}
