/**
* Calls virtual drawShape() method to draw the actial shape.
* Draws bounding rect and control points if the shape is selected.
*
* @param painter :: QPainter used for drawing.
*/
void Shape2D::draw(QPainter& painter) const
{
if (!m_visible) return;
painter.setPen(m_color);
this->drawShape(painter);
if (m_editing || m_selected)
{
QColor c(255, 255, 255, 100);
painter.setPen(c);
painter.drawRect(m_boundingRect.toQRectF());
size_t np = NCommonCP;
double rsize = 2;
int alpha = 100;
if (m_editing)
{
// if editing show all CP, make them bigger and opaque
np = getNControlPoints();
rsize = sizeCP;
alpha = 255;
}
for (size_t i = 0; i < np; ++i)
{
QPointF p = painter.transform().map(getControlPoint(i));
QRectF r(p - QPointF(rsize, rsize), p + QPointF(rsize, rsize));
painter.save();
painter.resetTransform();
QColor c(255, 255, 255, alpha);
painter.fillRect(r, c);
r.adjust(-1, -1, 0, 0);
painter.setPen(QColor(0, 0, 0, alpha));
painter.drawRect(r);
painter.restore();
}
}
}
QPointF Shape2D::getControlPoint(size_t i) const
{
if ( i >= getNControlPoints())
{
throw std::range_error("Control point index is out of range");
}
if ( i < 4 ) return m_boundingRect.vertex( i );
return getShapeControlPoint(i - NCommonCP);
}
void Shape2D::setControlPoint(size_t i, const QPointF& pos)
{
if (i >= getNControlPoints())
{
throw std::range_error("Control point index is out of range");
}
if (i < 4)
{
m_boundingRect.setVertex(i, pos);
refit();
}
// else ?
else
setShapeControlPoint(i - NCommonCP, pos);
resetBoundingRect();
}
void Shape2D::draw(QPainter& painter) const
{
painter.setPen(m_color);
this->drawShape(painter);
if (m_editing)
{
QColor c(255,255,255,100);
painter.setPen(c);
painter.setCompositionMode(QPainter::CompositionMode_Plus);
painter.drawRect(m_boundingRect.toQRectF());
for(size_t i = 0; i < getNControlPoints(); ++i)
{
QPointF p = painter.transform().map(getControlPoint(i));
QRectF r(p - QPointF(sizeCP,sizeCP),p + QPointF(sizeCP,sizeCP));
painter.save();
painter.resetTransform();
painter.fillRect(r,c);
painter.restore();
}
}
}