void ColorMapRect::SetTransferFunction(boost::shared_ptr<ColorMap> value)
{
if( m_colorMap != value )
{
m_shade = QImage(0, 0, QImage::Format_RGB32);
// Set this before creating the breakpoint guis.
m_colorMap = value;
//disconnect(m_hoverPoints);
delete m_hoverPoints;
m_hoverPoints = new Breakpoints(this);
connect(m_hoverPoints, SIGNAL(OnSelectedPointChanged(const std::map<ElVisFloat, ColorMapBreakpoint>::const_iterator&)),
this, SLOT(HandleSelectedPointChanged(const std::map<ElVisFloat, ColorMapBreakpoint>::const_iterator&)));
connect(m_hoverPoints, SIGNAL(OnBreakpointsChanged()),
this, SLOT(HandleBreakpointsChanged()));
update();
}
bool Breakpoints::eventFilter(QObject *object, QEvent *event)
{
if( object != m_widget )
{
return false;
}
switch (event->type())
{
case QEvent::MouseButtonPress:
{
QMouseEvent *me = (QMouseEvent *) event;
QPointF clickPos = me->pos();
for(m_selectedBreakpoint = m_model->GetBreakpoints().begin(); m_selectedBreakpoint != m_model->GetBreakpoints().end(); ++m_selectedBreakpoint)
{
QPainterPath path;
path.addEllipse(pointBoundingRect(m_selectedBreakpoint));
if (path.contains(clickPos))
{
break;
}
}
if (me->button() == Qt::LeftButton)
{
if (m_selectedBreakpoint == m_model->GetBreakpoints().end() )
{
double px, py;
CalculatePercent(clickPos.x(), clickPos.y(), px, py);
ElVis::Color c;
c.SetAlpha(py);
c.SetGreen(1.0);
c.SetRed(1.0);
c.SetBlue(1.0);
m_selectedBreakpoint = m_model->InsertBreakpoint(px, c);
}
}
else if (me->button() == Qt::RightButton)
{
if( m_selectedBreakpoint != m_model->GetBreakpoints().end() )
{
m_model->RemoveBreakpoint(m_selectedBreakpoint);
m_selectedBreakpoint = m_model->GetBreakpoints().end();
}
}
OnSelectedPointChanged(m_selectedBreakpoint);
OnBreakpointsChanged();
return true;
}
break;
case QEvent::MouseButtonRelease:
break;
case QEvent::MouseMove:
if (m_selectedBreakpoint != m_model->GetBreakpoints().end() )
{
const QPointF& point = ((QMouseEvent *)event)->pos();
double px, py;
CalculatePercent(point.x(), point.y(), px, py);
ElVisFloat key = px;
while( m_model->GetBreakpoints().find(key) != m_model->GetBreakpoints().end())
{
key += .00001;
}
ElVis::Color c = (*m_selectedBreakpoint).second.Col;
c.SetAlpha(py);
m_model->RemoveBreakpoint(m_selectedBreakpoint);
m_selectedBreakpoint = m_model->InsertBreakpoint(key, c);
OnBreakpointsChanged();
}
break;
case QEvent::Resize:
{
//QResizeEvent *e = (QResizeEvent *) event;
//if (e->oldSize().width() == 0 || e->oldSize().height() == 0)
// break;
//qreal stretch_x = e->size().width() / qreal(e->oldSize().width());
//qreal stretch_y = e->size().height() / qreal(e->oldSize().height());
//for (int i=0; i<m_points.size(); ++i)
//{
// QPointF p = m_points[i];
// movePoint(i, QPointF(p.x() * stretch_x, p.y() * stretch_y), false);
//}
//update();
break;
}
case QEvent::Paint:
{
ColorMapRect* that_widget = m_widget;
m_widget = 0;
QApplication::sendEvent(object, event);
m_widget = that_widget;
paintPoints();
return true;
}
default:
break;
}
return false;
}
