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QwtPlotMagnifier
Langue: en
Version: 152142 (fedora - 05/07/09)
Section: 3 (Bibliothèques de fonctions)
Sommaire
- NAME
- SYNOPSIS
- Detailed Description
- Constructor & Destructor Documentation
- Member Function Documentation
- void QwtPlotMagnifier::setAxisEnabled (int axis, bool on)
- bool QwtPlotMagnifier::isAxisEnabled (int axis) const
- QwtPlotCanvas * QwtPlotMagnifier::canvas ()
- const QwtPlotCanvas * QwtPlotMagnifier::canvas () const
- QwtPlot * QwtPlotMagnifier::plot ()
- const QwtPlot * QwtPlotMagnifier::plot () const
- void QwtPlotMagnifier::rescale (double factor) [protected, virtual]
- Author
NAME
QwtPlotMagnifier -SYNOPSIS
Inherits QwtMagnifier.
Detailed Description
QwtPlotMagnifier provides zooming, by magnifying in steps.
Using QwtPlotMagnifier a plot can be zoomed in/out in steps using keys, the mouse wheel or moving a mouse button in vertical direction.
Together with QwtPlotZoomer and QwtPlotPanner it is possible to implement individual and powerful navigation of the plot canvas.
See also:
- QwtPlotZoomer, QwtPlotPanner, QwtPlot
Definition at line 30 of file qwt_plot_magnifier.h.
Public Member Functions
QwtPlotMagnifier (QwtPlotCanvas *)
virtual ~QwtPlotMagnifier ()
void setAxisEnabled (int axis, bool on)
bool isAxisEnabled (int axis) const
QwtPlotCanvas * canvas ()
const QwtPlotCanvas * canvas () const
QwtPlot * plot ()
const QwtPlot * plot () const
Protected Member Functions
virtual void rescale (double factor)
Constructor & Destructor Documentation
QwtPlotMagnifier::QwtPlotMagnifier (QwtPlotCanvas * canvas) [explicit]
Constructor
Parameters:
- canvas Plot canvas to be magnified
Definition at line 35 of file qwt_plot_magnifier.cpp.
QwtPlotMagnifier::~QwtPlotMagnifier () [virtual]
Destructor.
Definition at line 42 of file qwt_plot_magnifier.cpp.
Member Function Documentation
void QwtPlotMagnifier::setAxisEnabled (int axis, bool on)
En/Disable an axis.
Axes that are enabled will be synchronized to the result of panning. All other axes will remain unchanged.
Parameters:
- axis Axis, see QwtPlot::Axis
on On/Off
See also:
- isAxisEnabled
Definition at line 58 of file qwt_plot_magnifier.cpp.
bool QwtPlotMagnifier::isAxisEnabled (int axis) const
Test if an axis is enabled
Parameters:
- axis Axis, see QwtPlot::Axis
Returns:
- True, if the axis is enabled
See also:
- setAxisEnabled
Definition at line 72 of file qwt_plot_magnifier.cpp.
Referenced by rescale().
QwtPlotCanvas * QwtPlotMagnifier::canvas ()
Return observed plot canvas.
Definition at line 81 of file qwt_plot_magnifier.cpp.
Referenced by plot().
const QwtPlotCanvas * QwtPlotMagnifier::canvas () const
Return Observed plot canvas.
Definition at line 91 of file qwt_plot_magnifier.cpp.
QwtPlot * QwtPlotMagnifier::plot ()
Return plot widget, containing the observed plot canvas.
Definition at line 97 of file qwt_plot_magnifier.cpp.
References canvas().
Referenced by rescale().
const QwtPlot * QwtPlotMagnifier::plot () const
Return plot widget, containing the observed plot canvas.
Definition at line 111 of file qwt_plot_magnifier.cpp.
void QwtPlotMagnifier::rescale (double factor) [protected, virtual]
Zoom in/out the axes scales
Parameters:
- factor A value < 1.0 zooms in, a value > 1.0 zooms out.
Implements QwtMagnifier.
Definition at line 120 of file qwt_plot_magnifier.cpp.
References QwtPlot::autoReplot(), QwtPlot::axisScaleDiv(), isAxisEnabled(), QwtScaleDiv::lBound(), plot(), QwtPlot::replot(), QwtPlot::setAutoReplot(), and QwtPlot::setAxisScale().
Author
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