QwtPlotPanner Class Reference
QwtPlotPanner provides panning of a plot canvas. More...
#include <qwt_plot_panner.h>
Public Member Functions | |
| QwtPlotPanner (QwtPlotCanvas *) | |
| virtual | ~QwtPlotPanner () |
| QwtPlotCanvas * | canvas () |
| const QwtPlotCanvas * | canvas () const |
| QwtPlot * | plot () |
| const QwtPlot * | plot () const |
| void | setAxisEnabled (int axis, bool on) |
| bool | isAxisEnabled (int axis) const |
Protected Slots | |
| virtual void | moveCanvas (int dx, int dy) |
Detailed Description
QwtPlotPanner provides panning of a plot canvas.
QwtPlotPanner is a panner for a QwtPlotCanvas, that adjusts the scales of the axes after dropping the canvas on its new position.
Together with QwtPlotZoomer and QwtPlotMagnifier powerful ways of navigating on a QwtPlot widget can be implemented easily.
- Note:
- The axes are not updated, while dragging the canvas
- See also:
- QwtPlotZoomer, QwtPlotMagnifier
Constructor & Destructor Documentation
| QwtPlotPanner::QwtPlotPanner | ( | QwtPlotCanvas * | canvas | ) | [explicit] |
Create a plot panner.
The panner is enabled for all axes
- Parameters:
-
canvas Plot canvas to pan, also the parent object
- See also:
- setAxisEnabled()
| QwtPlotPanner::~QwtPlotPanner | ( | ) | [virtual] |
Destructor.
Member Function Documentation
| const QwtPlotCanvas * QwtPlotPanner::canvas | ( | ) | const |
Return Observed plot canvas.
| QwtPlotCanvas * QwtPlotPanner::canvas | ( | ) |
Return observed plot canvas.
| bool QwtPlotPanner::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(), moveCanvas()
| void QwtPlotPanner::moveCanvas | ( | int | dx, | |
| int | dy | |||
| ) | [protected, virtual, slot] |
Adjust the enabled axes according to dx/dy
- Parameters:
-
dx Pixel offset in x direction dy Pixel offset in y direction
- See also:
- QwtPanner::panned()
| const QwtPlot * QwtPlotPanner::plot | ( | ) | const |
Return plot widget, containing the observed plot canvas.
| QwtPlot * QwtPlotPanner::plot | ( | ) |
Return plot widget, containing the observed plot canvas.
| void QwtPlotPanner::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(), moveCanvas()
Generated on Wed Sep 2 18:37:26 2009 for Qwt User's Guide by
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