QwtPlotPicker is a QwtPicker tailored for selections on a plot canvas. It is set to a x-Axis and y-Axis and translates all pixel coordinates into this coodinate system.
Definition at line 29 of file qwt_plot_picker.h.
Signals | |
| void | selected (const QwtDoublePoint &pos) |
| void | selected (const QwtDoubleRect &rect) |
| void | selected (const QwtArray< QwtDoublePoint > &pa) |
| void | appended (const QwtDoublePoint &pos) |
| void | moved (const QwtDoublePoint &pos) |
Public Member Functions | |
| QwtPlotPicker (QwtPlotCanvas *) | |
| QwtPlotPicker (int xAxis, int yAxis, QwtPlotCanvas *) | |
| QwtPlotPicker (int xAxis, int yAxis, int selectionFlags, RubberBand rubberBand, DisplayMode trackerMode, QwtPlotCanvas *) | |
| virtual void | setAxis (int xAxis, int yAxis) |
| int | xAxis () const |
| int | yAxis () const |
| QwtPlot * | plot () |
| const QwtPlot * | plot () const |
| QwtPlotCanvas * | canvas () |
| const QwtPlotCanvas * | canvas () const |
Protected Member Functions | |
| QwtDoubleRect | scaleRect () const |
| QwtDoubleRect | invTransform (const QRect &) const |
| QRect | transform (const QwtDoubleRect &) const |
| QwtDoublePoint | invTransform (const QPoint &) const |
| QPoint | transform (const QwtDoublePoint &) const |
| virtual QwtText | trackerText (const QPoint &) const |
| virtual QwtText | trackerText (const QwtDoublePoint &) const |
| virtual void | move (const QPoint &) |
| virtual void | append (const QPoint &) |
| virtual bool | end (bool ok=true) |
| QwtPlotPicker::QwtPlotPicker | ( | QwtPlotCanvas * | canvas | ) | [explicit] |
Create a plot picker.
The picker is set to those x- and y-axis of the plot that are enabled. If both or no x-axis are enabled, the picker is set to QwtPlot::xBottom. If both or no y-axis are enabled, it is set to QwtPlot::yLeft.
| canvas | Plot canvas to observe, also the parent object |
Definition at line 32 of file qwt_plot_picker.cpp.
References QwtPlot::axisEnabled(), canvas(), plot(), setAxis(), xAxis(), and yAxis().
| QwtPlotPicker::QwtPlotPicker | ( | int | xAxis, | |
| int | yAxis, | |||
| QwtPlotCanvas * | canvas | |||
| ) | [explicit] |
Create a plot picker
| xAxis | Set the x axis of the picker | |
| yAxis | Set the y axis of the picker | |
| canvas | Plot canvas to observe, also the parent object |
Definition at line 70 of file qwt_plot_picker.cpp.
| QwtPlotPicker::QwtPlotPicker | ( | int | xAxis, | |
| int | yAxis, | |||
| int | selectionFlags, | |||
| RubberBand | rubberBand, | |||
| DisplayMode | trackerMode, | |||
| QwtPlotCanvas * | canvas | |||
| ) | [explicit] |
Create a plot picker
| xAxis | X axis of the picker | |
| yAxis | Y axis of the picker | |
| selectionFlags | Or'd value of SelectionType, RectSelectionType and SelectionMode | |
| rubberBand | Rubberband style | |
| trackerMode | Tracker mode | |
| canvas | Plot canvas to observe, also the parent object |
QwtPlot::autoReplot(), QwtPlot::replot(), QwtPlotPicker::scaleRect()
Definition at line 93 of file qwt_plot_picker.cpp.
| void QwtPlotPicker::setAxis | ( | int | xAxis, | |
| int | yAxis | |||
| ) | [virtual] |
Set the x and y axes of the picker
| xAxis | X axis | |
| yAxis | Y axis |
Reimplemented in QwtPlotZoomer.
Definition at line 169 of file qwt_plot_picker.cpp.
References plot().
Referenced by QwtPlotPicker(), and QwtPlotZoomer::setAxis().
| int QwtPlotPicker::xAxis | ( | ) | const |
Return x axis.
Definition at line 183 of file qwt_plot_picker.cpp.
Referenced by QwtPlotPicker(), QwtPlotZoomer::rescale(), scaleRect(), and QwtPlotZoomer::setAxis().
| int QwtPlotPicker::yAxis | ( | ) | const |
Return y axis.
Definition at line 189 of file qwt_plot_picker.cpp.
Referenced by QwtPlotPicker(), QwtPlotZoomer::rescale(), scaleRect(), and QwtPlotZoomer::setAxis().
| QwtPlot * QwtPlotPicker::plot | ( | ) |
Return plot widget, containing the observed plot canvas.
Definition at line 119 of file qwt_plot_picker.cpp.
References canvas().
Referenced by QwtPlotZoomer::end(), end(), invTransform(), QwtPlotPicker(), QwtPlotZoomer::rescale(), scaleRect(), setAxis(), QwtPlotZoomer::setZoomBase(), and transform().
| const QwtPlot * QwtPlotPicker::plot | ( | ) | const |
Return plot widget, containing the observed plot canvas.
Definition at line 133 of file qwt_plot_picker.cpp.
| QwtPlotCanvas * QwtPlotPicker::canvas | ( | ) |
Return observed plot canvas.
Definition at line 103 of file qwt_plot_picker.cpp.
References QwtPicker::parentWidget().
Referenced by plot(), QwtPlotPicker(), and QwtPlotZoomer::QwtPlotZoomer().
| const QwtPlotCanvas * QwtPlotPicker::canvas | ( | ) | const |
| void QwtPlotPicker::selected | ( | const QwtDoublePoint & | pos | ) | [signal] |
A signal emitted in case of selectionFlags() & PointSelection.
| pos | Selected point |
Referenced by end().
| void QwtPlotPicker::selected | ( | const QwtDoubleRect & | rect | ) | [signal] |
A signal emitted in case of selectionFlags() & RectSelection.
| rect | Selected rectangle |
| void QwtPlotPicker::selected | ( | const QwtArray< QwtDoublePoint > & | pa | ) | [signal] |
A signal emitting the selected points, at the end of a selection.
| pa | Selected points |
| void QwtPlotPicker::appended | ( | const QwtDoublePoint & | pos | ) | [signal] |
| void QwtPlotPicker::moved | ( | const QwtDoublePoint & | pos | ) | [signal] |
A signal emitted whenever the last appended point of the selection has been moved.
| pos | Position of the moved last point of the selection. |
Referenced by move().
| QwtDoubleRect QwtPlotPicker::scaleRect | ( | ) | const [protected] |
Return normalized bounding rect of the axes
Definition at line 143 of file qwt_plot_picker.cpp.
References QwtPlot::axisScaleDiv(), QwtScaleDiv::lBound(), plot(), QwtScaleDiv::range(), xAxis(), and yAxis().
Referenced by QwtPlotZoomer::rescale(), QwtPlotZoomer::setAxis(), and QwtPlotZoomer::setZoomBase().
| QwtDoubleRect QwtPlotPicker::invTransform | ( | const QRect & | rect | ) | const [protected] |
Translate a rectangle from pixel into plot coordinates
Definition at line 332 of file qwt_plot_picker.cpp.
References QwtPlot::canvasMap(), QwtScaleMap::invTransform(), and plot().
Referenced by append(), QwtPlotZoomer::end(), end(), move(), and trackerText().
| QRect QwtPlotPicker::transform | ( | const QwtDoubleRect & | rect | ) | const [protected] |
Translate a rectangle from plot into pixel coordinates
Definition at line 351 of file qwt_plot_picker.cpp.
References QwtPlot::canvasMap(), plot(), and QwtScaleMap::transform().
| QwtDoublePoint QwtPlotPicker::invTransform | ( | const QPoint & | pos | ) | const [protected] |
Translate a point from pixel into plot coordinates
Definition at line 369 of file qwt_plot_picker.cpp.
References QwtPlot::canvasMap(), QwtScaleMap::invTransform(), and plot().
| QPoint QwtPlotPicker::transform | ( | const QwtDoublePoint & | pos | ) | const [protected] |
Translate a point from plot into pixel coordinates
Definition at line 385 of file qwt_plot_picker.cpp.
References QwtPlot::canvasMap(), plot(), and QwtScaleMap::transform().
| QwtText QwtPlotPicker::trackerText | ( | const QPoint & | pos | ) | const [protected, virtual] |
Translate a pixel position into a position string
| pos | Position in pixel coordinates |
Reimplemented from QwtPicker.
Definition at line 200 of file qwt_plot_picker.cpp.
References invTransform().
| QwtText QwtPlotPicker::trackerText | ( | const QwtDoublePoint & | pos | ) | const [protected, virtual] |
Translate a position into a position string.
In case of HLineRubberBand the label is the value of the y position, in case of VLineRubberBand the value of the x position. Otherwise the label contains x and y position separated by a ',' .
The format for the double to string conversion is "%.4f".
| pos | Position |
Definition at line 217 of file qwt_plot_picker.cpp.
References QwtPicker::rubberBand().
| void QwtPlotPicker::move | ( | const QPoint & | pos | ) | [protected, virtual] |
Move the last point of the selection
| pos | New position |
Reimplemented from QwtPicker.
Definition at line 259 of file qwt_plot_picker.cpp.
References invTransform(), QwtPicker::move(), and moved().
| void QwtPlotPicker::append | ( | const QPoint & | pos | ) | [protected, virtual] |
Append a point to the selection and update rubberband and tracker.
| pos | Additional point |
Reimplemented from QwtPicker.
Definition at line 244 of file qwt_plot_picker.cpp.
References QwtPicker::append(), appended(), and invTransform().
| bool QwtPlotPicker::end | ( | bool | ok = true |
) | [protected, virtual] |
Close a selection setting the state to inactive.
| ok | If true, complete the selection and emit selected signals otherwise discard the selection. |
Reimplemented from QwtPicker.
Reimplemented in QwtPlotZoomer.
Definition at line 273 of file qwt_plot_picker.cpp.
References QwtPicker::end(), invTransform(), plot(), selected(), QwtPicker::selection(), and QwtPicker::selectionFlags().
Referenced by QwtPlotZoomer::end().
1.5.0