Qwt User's Guide
6.0.2
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#include <qwt_picker_machine.h>
Public Member Functions | |
QwtPickerPolygonMachine () | |
virtual QList< Command > | transition (const QwtEventPattern &, const QEvent *) |
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QwtPickerMachine (SelectionType) | |
virtual | ~QwtPickerMachine () |
void | reset () |
SelectionType | selectionType () const |
void | setState (int) |
int | state () const |
Additional Inherited Members | |
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enum | Command { Begin, Append, Move, Remove, End } |
enum | SelectionType { NoSelection = -1, PointSelection, RectSelection, PolygonSelection } |
A state machine for polygon selections.
Pressing QwtEventPattern::MouseSelect1 or QwtEventPattern::KeySelect1 starts the selection and selects the first point, or appends a point. Pressing QwtEventPattern::MouseSelect2 or QwtEventPattern::KeySelect2 appends the last point and terminates the selection.