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.TH "QwtPlotPicker" 3 "1 May 2008" "Version 5.1.0" "Qwt User's Guide" \" -*- nroff -*-
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Inherits \fBQwtPicker\fP.
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Inherited by \fBQwtPlotZoomer\fP.
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.SH "Detailed Description"
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\fBQwtPlotPicker\fP provides selections on a plot canvas.
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\fBQwtPlotPicker\fP is a \fBQwtPicker\fP 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.
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Definition at line 29 of file qwt_plot_picker.h.
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.RI "void \fBselected\fP (const \fBQwtDoublePoint\fP &pos)"
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.RI "void \fBselected\fP (const \fBQwtDoubleRect\fP &rect)"
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.RI "void \fBselected\fP (const QwtArray< \fBQwtDoublePoint\fP > &pa)"
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.RI "void \fBappended\fP (const \fBQwtDoublePoint\fP &pos)"
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.RI "void \fBmoved\fP (const \fBQwtDoublePoint\fP &pos)"
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.SS "Public Member Functions"
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.RI "\fBQwtPlotPicker\fP (\fBQwtPlotCanvas\fP *)"
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.RI "\fBQwtPlotPicker\fP (int xAxis, int yAxis, \fBQwtPlotCanvas\fP *)"
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.RI "\fBQwtPlotPicker\fP (int xAxis, int yAxis, int selectionFlags, \fBRubberBand\fP rubberBand, \fBDisplayMode\fP trackerMode, \fBQwtPlotCanvas\fP *)"
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.RI "virtual void \fBsetAxis\fP (int xAxis, int yAxis)"
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.RI "int \fBxAxis\fP () const"
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.RI "int \fByAxis\fP () const"
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.RI "\fBQwtPlot\fP * \fBplot\fP ()"
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.RI "const \fBQwtPlot\fP * \fBplot\fP () const"
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.RI "\fBQwtPlotCanvas\fP * \fBcanvas\fP ()"
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.RI "const \fBQwtPlotCanvas\fP * \fBcanvas\fP () const"
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.SS "Protected Member Functions"
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.RI "\fBQwtDoubleRect\fP \fBscaleRect\fP () const"
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.RI "\fBQwtDoubleRect\fP \fBinvTransform\fP (const QRect &) const "
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.RI "QRect \fBtransform\fP (const \fBQwtDoubleRect\fP &) const"
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.RI "\fBQwtDoublePoint\fP \fBinvTransform\fP (const QPoint &) const"
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.RI "QPoint \fBtransform\fP (const \fBQwtDoublePoint\fP &) const"
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.RI "virtual \fBQwtText\fP \fBtrackerText\fP (const QPoint &) const"
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.RI "virtual \fBQwtText\fP \fBtrackerText\fP (const \fBQwtDoublePoint\fP &) const"
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.RI "virtual void \fBmove\fP (const QPoint &)"
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.RI "virtual void \fBappend\fP (const QPoint &)"
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.RI "virtual bool \fBend\fP (bool ok=true)"
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.SH "Constructor & Destructor Documentation"
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.SS "QwtPlotPicker::QwtPlotPicker (\fBQwtPlotCanvas\fP * canvas)\fC [explicit]\fP"
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Create a plot picker.
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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.
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\fIcanvas\fP Plot canvas to observe, also the parent object
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\fBQwtPlot::autoReplot()\fP, \fBQwtPlot::replot()\fP, \fBQwtPlotPicker::scaleRect()\fP
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Definition at line 32 of file qwt_plot_picker.cpp.
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References QwtPlot::axisEnabled(), canvas(), plot(), setAxis(), xAxis(), and yAxis().
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.SS "QwtPlotPicker::QwtPlotPicker (int xAxis, int yAxis, \fBQwtPlotCanvas\fP * canvas)\fC [explicit]\fP"
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\fIxAxis\fP Set the x axis of the picker
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\fIyAxis\fP Set the y axis of the picker
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\fIcanvas\fP Plot canvas to observe, also the parent object
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\fBQwtPlot::autoReplot()\fP, \fBQwtPlot::replot()\fP, \fBQwtPlotPicker::scaleRect()\fP
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Definition at line 70 of file qwt_plot_picker.cpp.
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.SS "QwtPlotPicker::QwtPlotPicker (int xAxis, int yAxis, int selectionFlags, \fBRubberBand\fP rubberBand, \fBDisplayMode\fP trackerMode, \fBQwtPlotCanvas\fP * canvas)\fC [explicit]\fP"
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\fIxAxis\fP X axis of the picker
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\fIyAxis\fP Y axis of the picker
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\fIselectionFlags\fP Or'd value of SelectionType, RectSelectionType and SelectionMode
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\fIrubberBand\fP Rubberband style
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\fItrackerMode\fP Tracker mode
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\fIcanvas\fP Plot canvas to observe, also the parent object
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\fBQwtPicker\fP, \fBQwtPicker::setSelectionFlags()\fP, \fBQwtPicker::setRubberBand()\fP, \fBQwtPicker::setTrackerMode\fP
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\fBQwtPlot::autoReplot()\fP, \fBQwtPlot::replot()\fP, \fBQwtPlotPicker::scaleRect()\fP
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Definition at line 93 of file qwt_plot_picker.cpp.
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.SH "Member Function Documentation"
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.SS "void QwtPlotPicker::setAxis (int xAxis, int yAxis)\fC [virtual]\fP"
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Set the x and y axes of the picker
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Reimplemented in \fBQwtPlotZoomer\fP.
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Definition at line 169 of file qwt_plot_picker.cpp.
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Referenced by QwtPlotPicker(), and QwtPlotZoomer::setAxis().
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.SS "int QwtPlotPicker::xAxis () const"
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Definition at line 183 of file qwt_plot_picker.cpp.
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Referenced by QwtPlotPicker(), QwtPlotZoomer::rescale(), scaleRect(), and QwtPlotZoomer::setAxis().
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.SS "int QwtPlotPicker::yAxis () const"
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Definition at line 189 of file qwt_plot_picker.cpp.
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Referenced by QwtPlotPicker(), QwtPlotZoomer::rescale(), scaleRect(), and QwtPlotZoomer::setAxis().
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.SS "\fBQwtPlot\fP * QwtPlotPicker::plot ()"
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Return plot widget, containing the observed plot canvas.
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Definition at line 119 of file qwt_plot_picker.cpp.
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Referenced by QwtPlotZoomer::end(), end(), invTransform(), QwtPlotPicker(), QwtPlotZoomer::rescale(), scaleRect(), setAxis(), QwtPlotZoomer::setZoomBase(), and transform().
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.SS "const \fBQwtPlot\fP * QwtPlotPicker::plot () const"
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Return plot widget, containing the observed plot canvas.
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Definition at line 133 of file qwt_plot_picker.cpp.
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.SS "\fBQwtPlotCanvas\fP * QwtPlotPicker::canvas ()"
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Return observed plot canvas.
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Definition at line 103 of file qwt_plot_picker.cpp.
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References QwtPicker::parentWidget().
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Referenced by plot(), QwtPlotPicker(), and QwtPlotZoomer::QwtPlotZoomer().
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.SS "const \fBQwtPlotCanvas\fP * QwtPlotPicker::canvas () const"
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Return Observed plot canvas.
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Definition at line 113 of file qwt_plot_picker.cpp.
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.SS "void QwtPlotPicker::selected (const \fBQwtDoublePoint\fP & pos)\fC [signal]\fP"
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A signal emitted in case of \fBselectionFlags()\fP & PointSelection.
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\fIpos\fP Selected point
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.SS "void QwtPlotPicker::selected (const \fBQwtDoubleRect\fP & rect)\fC [signal]\fP"
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A signal emitted in case of \fBselectionFlags()\fP & RectSelection.
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\fIrect\fP Selected rectangle
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.SS "void QwtPlotPicker::selected (const QwtArray< \fBQwtDoublePoint\fP > & pa)\fC [signal]\fP"
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A signal emitting the selected points, at the end of a selection.
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\fIpa\fP Selected points
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.SS "void QwtPlotPicker::appended (const \fBQwtDoublePoint\fP & pos)\fC [signal]\fP"
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A signal emitted when a point has been appended to the selection
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\fIpos\fP Position of the appended point.
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\fBappend()\fP. \fBmoved()\fP
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Referenced by append().
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.SS "void QwtPlotPicker::moved (const \fBQwtDoublePoint\fP & pos)\fC [signal]\fP"
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A signal emitted whenever the last appended point of the selection has been moved.
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\fIpos\fP Position of the moved last point of the selection.
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\fBmove()\fP, \fBappended()\fP
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Referenced by move().
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.SS "\fBQwtDoubleRect\fP QwtPlotPicker::scaleRect () const\fC [protected]\fP"
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Return normalized bounding rect of the axes
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\fBQwtPlot::autoReplot()\fP, \fBQwtPlot::replot()\fP.
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Definition at line 143 of file qwt_plot_picker.cpp.
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References QwtPlot::axisScaleDiv(), QwtScaleDiv::lBound(), plot(), QwtScaleDiv::range(), xAxis(), and yAxis().
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Referenced by QwtPlotZoomer::rescale(), QwtPlotZoomer::setAxis(), and QwtPlotZoomer::setZoomBase().
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.SS "\fBQwtDoubleRect\fP QwtPlotPicker::invTransform (const QRect & rect) const\fC [protected]\fP"
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Translate a rectangle from pixel into plot coordinates
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Rectangle in plot coordinates
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\fBQwtPlotPicker::transform()\fP
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Definition at line 332 of file qwt_plot_picker.cpp.
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References QwtPlot::canvasMap(), QwtScaleMap::invTransform(), and plot().
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Referenced by append(), QwtPlotZoomer::end(), end(), move(), and trackerText().
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.SS "QRect QwtPlotPicker::transform (const \fBQwtDoubleRect\fP & rect) const\fC [protected]\fP"
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Translate a rectangle from plot into pixel coordinates
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Rectangle in pixel coordinates
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\fBQwtPlotPicker::invTransform()\fP
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Definition at line 351 of file qwt_plot_picker.cpp.
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References QwtPlot::canvasMap(), plot(), and QwtScaleMap::transform().
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.SS "\fBQwtDoublePoint\fP QwtPlotPicker::invTransform (const QPoint & pos) const\fC [protected]\fP"
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Translate a point from pixel into plot coordinates
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Point in plot coordinates
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\fBQwtPlotPicker::transform()\fP
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Definition at line 369 of file qwt_plot_picker.cpp.
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References QwtPlot::canvasMap(), QwtScaleMap::invTransform(), and plot().
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.SS "QPoint QwtPlotPicker::transform (const \fBQwtDoublePoint\fP & pos) const\fC [protected]\fP"
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Translate a point from plot into pixel coordinates
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Point in pixel coordinates
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\fBQwtPlotPicker::invTransform()\fP
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Definition at line 385 of file qwt_plot_picker.cpp.
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References QwtPlot::canvasMap(), plot(), and QwtScaleMap::transform().
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.SS "\fBQwtText\fP QwtPlotPicker::trackerText (const QPoint & pos) const\fC [protected, virtual]\fP"
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Translate a pixel position into a position string
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\fIpos\fP Position in pixel coordinates
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Reimplemented from \fBQwtPicker\fP.
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Definition at line 200 of file qwt_plot_picker.cpp.
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References invTransform().
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.SS "\fBQwtText\fP QwtPlotPicker::trackerText (const \fBQwtDoublePoint\fP & pos) const\fC [protected, virtual]\fP"
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Translate a position into a position string.
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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 ',' .
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The format for the double to string conversion is '%.4f'.
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Definition at line 217 of file qwt_plot_picker.cpp.
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References QwtPicker::rubberBand().
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.SS "void QwtPlotPicker::move (const QPoint & pos)\fC [protected, virtual]\fP"
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Move the last point of the selection
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\fIpos\fP New position
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\fBisActive\fP, \fBbegin()\fP, \fBend()\fP, \fBappend()\fP
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The \fBmoved(const QPoint &)\fP, moved(const QDoublePoint &) signals are emitted.
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Reimplemented from \fBQwtPicker\fP.
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Definition at line 259 of file qwt_plot_picker.cpp.
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References invTransform(), QwtPicker::move(), and moved().
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.SS "void QwtPlotPicker::append (const QPoint & pos)\fC [protected, virtual]\fP"
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Append a point to the selection and update rubberband and tracker.
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\fIpos\fP Additional point
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\fBisActive\fP, \fBbegin()\fP, \fBend()\fP, \fBmove()\fP, \fBappended()\fP
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The \fBappended(const QPoint &)\fP, appended(const QDoublePoint &) signals are emitted.
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Reimplemented from \fBQwtPicker\fP.
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Definition at line 244 of file qwt_plot_picker.cpp.
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References QwtPicker::append(), appended(), and invTransform().
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.SS "bool QwtPlotPicker::end (bool ok = \fCtrue\fP)\fC [protected, virtual]\fP"
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Close a selection setting the state to inactive.
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\fIok\fP If true, complete the selection and emit selected signals otherwise discard the selection.
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true if the selection is accepted, false otherwise
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Reimplemented from \fBQwtPicker\fP.
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Reimplemented in \fBQwtPlotZoomer\fP.
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Definition at line 273 of file qwt_plot_picker.cpp.
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References QwtPicker::end(), invTransform(), plot(), selected(), QwtPicker::selection(), and QwtPicker::selectionFlags().
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Referenced by QwtPlotZoomer::end().
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qwt-5.1.0/doc/man/man3/QwtPlotPicker.3
