conflicting packages
| 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)
Public Member Functions¶
QwtPlotPicker (QwtPlotCanvas *)
Protected Member Functions¶
virtual void append (const QPoint &)
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¶
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