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QwtPlotPicker(3)               Qwt User's Guide               QwtPlotPicker(3)

NAME

QwtPlotPicker -

SYNOPSIS

#include <qwt_plot_picker.h> Inherits QwtPicker. Inherited by QwtPlotZoomer. Signals void appended (const QwtDoublePoint &pos) void moved (const QwtDoublePoint &pos) void selected (const QwtDoublePoint &pos) void selected (const QwtDoubleRect &rect) void selected (const QwtArray< QwtDoublePoint > &pa) Public Member Functions QwtPlotPicker (QwtPlotCanvas *) QwtPlotPicker (int xAxis, int yAxis, QwtPlotCanvas *) QwtPlotPicker (int xAxis, int yAxis, int selectionFlags, RubberBand rubberBand, DisplayMode trackerMode, QwtPlotCanvas *) virtual ~QwtPlotPicker () QwtPlotCanvas * canvas () const QwtPlotCanvas * canvas () const QwtPlot * plot () const QwtPlot * plot () const virtual void setAxis (int xAxis, int yAxis) int xAxis () const int yAxis () const Protected Member Functions virtual void append (const QPoint &) virtual bool end (bool ok=true) QwtDoubleRect invTransform (const QRect &) const QwtDoublePoint invTransform (const QPoint &) const virtual void move (const QPoint &) QwtDoubleRect scaleRect () const virtual QwtText trackerText (const QPoint &) const virtual QwtText trackerText (const QwtDoublePoint &) const QRect transform (const QwtDoubleRect &) const QPoint transform (const QwtDoublePoint &) const Additional Inherited Members Detailed Description QwtPlotPicker provides selections on a plot canvas. 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. Constructor & Destructor Documentation 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. Parameters: canvas Plot canvas to observe, also the parent object See also: QwtPlot::autoReplot(), QwtPlot::replot(), QwtPlotPicker::scaleRect() QwtPlotPicker::QwtPlotPicker (intxAxis, intyAxis, QwtPlotCanvas *canvas) [explicit] Create a plot picker Parameters: 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 See also: QwtPlot::autoReplot(), QwtPlot::replot(), QwtPlotPicker::scaleRect() QwtPlotPicker::QwtPlotPicker (intxAxis, intyAxis, intselectionFlags, RubberBandrubberBand, DisplayModetrackerMode, QwtPlotCanvas *canvas) [explicit] Create a plot picker Parameters: 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 See also: QwtPicker, QwtPicker::setSelectionFlags(), QwtPicker::setRubberBand(), QwtPicker::setTrackerMode QwtPlot::autoReplot(), QwtPlot::replot(), QwtPlotPicker::scaleRect() Member Function Documentation void QwtPlotPicker::append (const QPoint &pos) [protected], [virtual] Append a point to the selection and update rubberband and tracker. Parameters: pos Additional point See also: isActive, begin(), end(), move(), appended() Note: The appended(const QPoint &), appended(const QDoublePoint &) signals are emitted. Reimplemented from QwtPicker. void QwtPlotPicker::appended (const QwtDoublePoint &pos) [signal] A signal emitted when a point has been appended to the selection Parameters: pos Position of the appended point. See also: append(). moved() bool QwtPlotPicker::end (boolok = true) [protected], [virtual] Close a selection setting the state to inactive. Parameters: ok If true, complete the selection and emit selected signals otherwise discard the selection. Returns: true if the selection is accepted, false otherwise Reimplemented from QwtPicker. Reimplemented in QwtPlotZoomer. QwtDoubleRect QwtPlotPicker::invTransform (const QRect &rect) const [protected] Translate a rectangle from pixel into plot coordinates Returns: Rectangle in plot coordinates See also: QwtPlotPicker::transform() QwtDoublePoint QwtPlotPicker::invTransform (const QPoint &pos) const [protected] Translate a point from pixel into plot coordinates Returns: Point in plot coordinates See also: QwtPlotPicker::transform() void QwtPlotPicker::move (const QPoint &pos) [protected], [virtual] Move the last point of the selection Parameters: pos New position See also: isActive, begin(), end(), append() Note: The moved(const QPoint &), moved(const QDoublePoint &) signals are emitted. Reimplemented from QwtPicker. void QwtPlotPicker::moved (const QwtDoublePoint &pos) [signal] A signal emitted whenever the last appended point of the selection has been moved. Parameters: pos Position of the moved last point of the selection. See also: move(), appended() QwtDoubleRect QwtPlotPicker::scaleRect () const [protected] Return normalized bounding rect of the axes See also: QwtPlot::autoReplot(), QwtPlot::replot(). void QwtPlotPicker::selected (const QwtDoublePoint &pos) [signal] A signal emitted in case of selectionFlags() & PointSelection. Parameters: pos Selected point void QwtPlotPicker::selected (const QwtDoubleRect &rect) [signal] A signal emitted in case of selectionFlags() & RectSelection. Parameters: rect Selected rectangle void QwtPlotPicker::selected (const QwtArray< QwtDoublePoint > &pa) [signal] A signal emitting the selected points, at the end of a selection. Parameters: pa Selected points void QwtPlotPicker::setAxis (intxAxis, intyAxis) [virtual] Set the x and y axes of the picker Parameters: xAxis X axis yAxis Y axis Reimplemented in QwtPlotZoomer. QwtText QwtPlotPicker::trackerText (const QPoint &pos) const [protected], [virtual] Translate a pixel position into a position string Parameters: pos Position in pixel coordinates Returns: Position string Reimplemented from QwtPicker. 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'. Parameters: pos Position Returns: Position string QRect QwtPlotPicker::transform (const QwtDoubleRect &rect) const [protected] Translate a rectangle from plot into pixel coordinates Returns: Rectangle in pixel coordinates See also: QwtPlotPicker::invTransform() QPoint QwtPlotPicker::transform (const QwtDoublePoint &pos) const [protected] Translate a point from plot into pixel coordinates Returns: Point in pixel coordinates See also: QwtPlotPicker::invTransform() Author Generated automatically by Doxygen for Qwt User's Guide from the source code. Version 5.2.3 Tue Nov 20 2012 QwtPlotPicker(3)

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