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 38 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 *, const char *name=0) | |
QwtPlotPicker (int xAxis, int yAxis, QwtPlotCanvas *, const char *name=0) | |
QwtPlotPicker (int xAxis, int yAxis, int selectionFlags, RubberBand rubberBand, DisplayMode cursorLabelMode, QwtPlotCanvas *, const char *name=0) | |
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 QString | cursorLabel (const QPoint &) const |
virtual QString | cursorLabel (const QwtDoublePoint &) const |
virtual void | move (const QPoint &) |
virtual void | append (const QPoint &) |
virtual bool | end (bool ok=TRUE) |
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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.
Definition at line 38 of file qwt_plot_picker.cpp. References QwtPlot::axisEnabled(), plot(), setAxis(), xAxis(), and yAxis(). |
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Create a plot picker
Definition at line 83 of file qwt_plot_picker.cpp. |
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Create a plot picker
Definition at line 114 of file qwt_plot_picker.cpp. |
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Append a point to the selection and update rubberband and cursor label.
Reimplemented from QwtPicker. Definition at line 261 of file qwt_plot_picker.cpp. References QwtPicker::append(), appended(), and invTransform(). |
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A signal emitted when a point has been appended to the selection
Referenced by append(). |
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Return Observed plot canvas.
Definition at line 134 of file qwt_plot_picker.cpp. |
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Return observed plot canvas.
Definition at line 124 of file qwt_plot_picker.cpp. References QwtPicker::parentWidget(). Referenced by plot(). |
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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 ī, ī. The format for the double to string conversion is "%.4f".
Definition at line 238 of file qwt_plot_picker.cpp. References QwtPicker::rubberBand(), QwtDoublePoint::x(), and QwtDoublePoint::y(). |
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Translate a pixel position into a position string
Reimplemented from QwtPicker. Definition at line 221 of file qwt_plot_picker.cpp. References invTransform(). |
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Close a selection setting the state to inactive.
Reimplemented from QwtPicker. Reimplemented in QwtPlotZoomer. Definition at line 290 of file qwt_plot_picker.cpp. References QwtPicker::end(), invTransform(), plot(), selected(), QwtPicker::selection(), and QwtPicker::selectionFlags(). Referenced by QwtPlotZoomer::end(). |
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Translate a point from pixel into plot coordinates
Definition at line 385 of file qwt_plot_picker.cpp. References QwtPlot::canvasMap(), QwtDiMap::invTransform(), and plot(). |
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Translate a rectangle from pixel into plot coordinates
Definition at line 349 of file qwt_plot_picker.cpp. References QwtPlot::canvasMap(), QwtDiMap::invTransform(), and plot(). Referenced by append(), cursorLabel(), QwtPlotZoomer::end(), end(), and move(). |
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Move the last point of the selection
Reimplemented from QwtPicker. Definition at line 276 of file qwt_plot_picker.cpp. References invTransform(), QwtPicker::move(), and moved(). |
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A signal emitted whenever the last appended point of the selection has been moved.
Referenced by move(). |
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Return plot widget, containing the observed plot canvas.
Definition at line 154 of file qwt_plot_picker.cpp. |
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Return plot widget, containing the observed plot canvas.
Definition at line 140 of file qwt_plot_picker.cpp. References canvas(). Referenced by QwtPlotZoomer::end(), end(), invTransform(), QwtPlotZoomer::minZoomSize(), QwtPlotPicker(), QwtPlotZoomer::rescale(), scaleRect(), setAxis(), QwtPlotZoomer::setZoomBase(), and transform(). |
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Return normalized bounding rect of the axes
Definition at line 170 of file qwt_plot_picker.cpp. References QwtPlot::axisScale(), QwtScaleDiv::hBound(), QwtScaleDiv::lBound(), QwtDoubleRect::normalize(), plot(), xAxis(), and yAxis(). Referenced by QwtPlotZoomer::rescale(), QwtPlotZoomer::setAxis(), and QwtPlotZoomer::setZoomBase(). |
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A signal emitting the selected points, at the end of a selection.
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A signal emitted in case of selectionFlags() & RectSelection.
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A signal emitted in case of selectionFlags() & PointSelection.
Referenced by end(). |
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Set the x and y axes of the picker
Reimplemented in QwtPlotZoomer. Definition at line 190 of file qwt_plot_picker.cpp. References plot(). Referenced by QwtPlotPicker(), and QwtPlotZoomer::setAxis(). |
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Translate a point from plot into pixel coordinates
Definition at line 401 of file qwt_plot_picker.cpp. References QwtPlot::canvasMap(), plot(), QwtDiMap::transform(), QwtDoublePoint::x(), and QwtDoublePoint::y(). |
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Translate a rectangle from plot into pixel coordinates
Definition at line 367 of file qwt_plot_picker.cpp. References QwtPlot::canvasMap(), plot(), QwtDiMap::transform(), QwtDoubleRect::x1(), QwtDoubleRect::x2(), QwtDoubleRect::y1(), and QwtDoubleRect::y2(). |
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Return x axis.
Definition at line 204 of file qwt_plot_picker.cpp. Referenced by QwtPlotZoomer::minZoomSize(), QwtPlotPicker(), QwtPlotZoomer::rescale(), scaleRect(), and QwtPlotZoomer::setAxis(). |
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Return y axis.
Definition at line 210 of file qwt_plot_picker.cpp. Referenced by QwtPlotZoomer::minZoomSize(), QwtPlotPicker(), QwtPlotZoomer::rescale(), scaleRect(), and QwtPlotZoomer::setAxis(). |