bool QwtPlotPicker::end( bool ok )
{
ok = QwtPicker::end( ok );
if ( !ok )
return false;
QwtPlot *plot = QwtPlotPicker::plot();
if ( !plot )
return false;
const QPolygon pa = selection();
if ( pa.count() == 0 )
return false;
QwtPickerMachine::SelectionType selectionType =
QwtPickerMachine::NoSelection;
if ( stateMachine() )
selectionType = stateMachine()->selectionType();
switch ( selectionType )
{
case QwtPickerMachine::PointSelection:
{
const QPointF pos = invTransform( pa[0] );
Q_EMIT selected( pos );
break;
}
case QwtPickerMachine::RectSelection:
{
if ( pa.count() >= 2 )
{
const QPoint p1 = pa[0];
const QPoint p2 = pa[int( pa.count() - 1 )];
const QRect rect = QRect( p1, p2 ).normalized();
Q_EMIT selected( invTransform( rect ) );
}
break;
}
case QwtPickerMachine::PolygonSelection:
{
QVector<QPointF> dpa( pa.count() );
for ( int i = 0; i < int( pa.count() ); i++ )
dpa[i] = invTransform( pa[i] );
Q_EMIT selected( dpa );
}
default:
break;
}
return true;
}
bool QwtPlotPicker::end(bool ok)
{
ok = QwtPicker::end(ok);
if ( !ok )
return false;
QwtPlot *plot = QwtPlotPicker::plot();
if ( !plot )
return false;
const QwtPolygon &pa = selection();
if ( pa.count() == 0 )
return false;
if ( selectionFlags() & PointSelection )
{
const QwtDoublePoint pos = invTransform(pa[0]);
emit selected(pos);
}
else if ( (selectionFlags() & RectSelection) && pa.count() >= 2 )
{
QPoint p1 = pa[0];
QPoint p2 = pa[int(pa.count() - 1)];
if ( selectionFlags() & CenterToCorner )
{
p1.setX(p1.x() - (p2.x() - p1.x()));
p1.setY(p1.y() - (p2.y() - p1.y()));
}
else if ( selectionFlags() & CenterToRadius )
{
const int radius = qwtMax(qwtAbs(p2.x() - p1.x()),
qwtAbs(p2.y() - p1.y()));
p2.setX(p1.x() + radius);
p2.setY(p1.y() + radius);
p1.setX(p1.x() - radius);
p1.setY(p1.y() - radius);
}
emit selected(invTransform(QRect(p1, p2)).normalized());
}
else
{
QwtArray<QwtDoublePoint> dpa(pa.count());
for ( int i = 0; i < int(pa.count()); i++ )
dpa[i] = invTransform(pa[i]);
emit selected(dpa);
}
return true;
}
bool RectPicker::end(bool ok)
{
if (!ok)//更改代码处：，正常结束后，并不停止。只有reset时候，end(false)停止选择，重置状态机
QwtPicker::end(ok);
if (!ok)
return false;
QwtPlot *plot = QwtPlotPicker::plot();
if (!plot)
return false;
const QPolygon points = selection();
if (points.count() == 0)
return false;
QwtPickerMachine::SelectionType selectionType =
QwtPickerMachine::NoSelection;
if (stateMachine())
selectionType = stateMachine()->selectionType();
switch (selectionType)
{
case QwtPickerMachine::PointSelection:
{
const QPointF pos = invTransform(points.first());
Q_EMIT selected(pos);
break;
}
case QwtPickerMachine::RectSelection:
{
if (points.count() >= 2)
{
const QPoint p1 = points.first();
const QPoint p2 = points.last();
QPointF pF1 = invTransform(p1);
QPointF pF2 = invTransform(p2);
const QRect rect = QRect(p1, p2).normalized();
const QRect rect11 = QRect(p1, p2);
QPoint pp1 = rect.topLeft();
QPoint pp2 = rect.bottomRight();
//const QRect rect = QRect(p1, p2);
QRectF rect1 = invTransform(rect);
QPointF topLeft = rect1.topLeft();
QPointF bottomRight = rect1.bottomRight();
Q_EMIT selected(invTransform(rect));
}
break;
}
case QwtPickerMachine::PolygonSelection:
{
QVector<QPointF> dpa(points.count());
for (int i = 0; i < points.count(); i++)
dpa[i] = invTransform(points[i]);
Q_EMIT selected(dpa);
}
default:
break;
}
return ok;
}
