QwtPlotMagnifier provides zooming, by magnifying in steps.  
 More...
#include <qwt_plot_magnifier.h>
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|  | QwtPlotMagnifier (QWidget *) | 
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| virtual | ~QwtPlotMagnifier () | 
|  | Destructor. 
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| void | setAxisEnabled (int axis, bool on) | 
|  | En/Disable an axis.  More... 
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| bool | isAxisEnabled (int axis) const | 
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| QWidget * | canvas () | 
|  | Return observed plot canvas. 
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| const QWidget * | canvas () const | 
|  | Return Observed plot canvas. 
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| QwtPlot * | plot () | 
|  | Return plot widget, containing the observed plot canvas. 
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| const QwtPlot * | plot () const | 
|  | Return plot widget, containing the observed plot canvas. 
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|  | QwtMagnifier (QWidget *) | 
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| virtual | ~QwtMagnifier () | 
|  | Destructor. 
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| QWidget * | parentWidget () | 
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| const QWidget * | parentWidget () const | 
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| void | setEnabled (bool) | 
|  | En/disable the magnifier.  More... 
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| bool | isEnabled () const | 
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| void | setMouseFactor (double) | 
|  | Change the mouse factor.  More... 
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| double | mouseFactor () const | 
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| void | setMouseButton (Qt::MouseButton, Qt::KeyboardModifiers=Qt::NoModifier) | 
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| void | getMouseButton (Qt::MouseButton &, Qt::KeyboardModifiers &) const | 
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| void | setWheelFactor (double) | 
|  | Change the wheel factor.  More... 
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| double | wheelFactor () const | 
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| void | setWheelModifiers (Qt::KeyboardModifiers) | 
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| Qt::KeyboardModifiers | wheelModifiers () const | 
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| void | setKeyFactor (double) | 
|  | Change the key factor.  More... 
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| double | keyFactor () const | 
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| void | setZoomInKey (int key, Qt::KeyboardModifiers=Qt::NoModifier) | 
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| void | getZoomInKey (int &key, Qt::KeyboardModifiers &) const | 
|  | Retrieve the settings of the zoom in key.  More... 
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| void | setZoomOutKey (int key, Qt::KeyboardModifiers=Qt::NoModifier) | 
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| void | getZoomOutKey (int &key, Qt::KeyboardModifiers &) const | 
|  | Retrieve the settings of the zoom out key.  More... 
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| virtual bool | eventFilter (QObject *, QEvent *) | 
|  | Event filter.  More... 
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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 
  
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          | QwtPlotMagnifier::QwtPlotMagnifier | ( | QWidget * | canvas | ) |  |  | explicit | 
 
Constructor 
- Parameters
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    | canvas | Plot canvas to be magnified |  
 
 
 
      
        
          | bool QwtPlotMagnifier::isAxisEnabled | ( | int | axis | ) | const | 
      
 
Test if an axis is enabled
- Parameters
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- Returns
- True, if the axis is enabled
- See also
- setAxisEnabled() 
 
 
  
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          | void QwtPlotMagnifier::rescale | ( | double | factor | ) |  |  | protectedvirtual | 
 
Zoom in/out the axes scales 
- Parameters
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    | factor | A value < 1.0 zooms in, a value > 1.0 zooms out. |  
 
Implements QwtMagnifier.
 
 
      
        
          | void QwtPlotMagnifier::setAxisEnabled | ( | int | axis, | 
        
          |  |  | bool | on | 
        
          |  | ) |  |  | 
      
 
En/Disable an axis. 
Only Axes that are enabled will be zoomed. All other axes will remain unchanged.
- Parameters
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- See also
- isAxisEnabled()