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QwtPlotGrid(3) Qwt User's Guide QwtPlotGrid(3)

QwtPlotGrid -

#include <qwt_plot_grid.h>
Inherits QwtPlotItem.


QwtPlotGrid ()
 
virtual ~QwtPlotGrid ()
 
virtual void draw (QPainter *p, const QwtScaleMap &xMap, const QwtScaleMap &yMap, const QRect &rect) const
 
void enableX (bool tf)
 
void enableXMin (bool tf)
 
void enableY (bool tf)
 
void enableYMin (bool tf)
 
const QPen & majPen () const
 
const QPen & minPen () const
 
virtual int rtti () const
 
void setMajPen (const QPen &p)
 
void setMinPen (const QPen &p)
 
void setPen (const QPen &p)
 
void setXDiv (const QwtScaleDiv &sx)
 
void setYDiv (const QwtScaleDiv &sy)
 
virtual void updateScaleDiv (const QwtScaleDiv &xMap, const QwtScaleDiv &yMap)
 
bool xEnabled () const
 
bool xMinEnabled () const
 
const QwtScaleDiv & xScaleDiv () const
 
bool yEnabled () const
 
bool yMinEnabled () const
 
const QwtScaleDiv & yScaleDiv () const
 

A class which draws a coordinate grid.
The QwtPlotGrid class can be used to draw a coordinate grid. A coordinate grid consists of major and minor vertical and horizontal gridlines. The locations of the gridlines are determined by the X and Y scale divisions which can be assigned with setXDiv() and setYDiv(). The draw() member draws the grid within a bounding rectangle.

Draw the grid. The grid is drawn into the bounding rectangle such that gridlines begin and end at the rectangle's borders. The X and Y maps are used to map the scale divisions into the drawing region screen.
Parameters:
painter Painter
 
xMap X axis map
 
yMap Y axis
 
canvasRect Contents rect of the plot canvas
Implements QwtPlotItem.

Enable or disable vertical gridlines. Parameters:
tf Enable (true) or disable
See also:
Minor gridlines can be enabled or disabled with enableXMin()

Enable or disable minor vertical gridlines. Parameters:
tf Enable (true) or disable
See also:
enableX()

Enable or disable horizontal gridlines. Parameters:
tf Enable (true) or disable
See also:
Minor gridlines can be enabled or disabled with enableYMin()

Enable or disable minor horizontal gridlines. Parameters:
tf Enable (true) or disable
See also:
enableY()

Returns:
the pen for the major gridlines
See also:
setMajPen(), setMinPen(), setPen()

Returns:
the pen for the minor gridlines
See also:
setMinPen(), setMajPen(), setPen()

Returns:
QwtPlotItem::Rtti_PlotGrid
Reimplemented from QwtPlotItem.

Assign a pen for the major gridlines
The width of non cosmetic pens is scaled according to the resolution of the paint device.
Parameters:
pen Pen
See also:
majPen(), setMinPen(), setPen(), QwtPainter::scaledPen()

Assign a pen for the minor gridlines
The width of non cosmetic pens is scaled according to the resolution of the paint device.
Parameters:
pen Pen
See also:
minPen(), setMajPen(), setPen(), QwtPainter::scaledPen()

Assign a pen for both major and minor gridlines
The width of non cosmetic pens is scaled according to the resolution of the paint device.
Parameters:
pen Pen
See also:
setMajPen(), setMinPen(), QwtPainter::scaledPen()

Assign an x axis scale division
Parameters:
scaleDiv Scale division

Assign a y axis division
Parameters:
scaleDiv Scale division

Update the grid to changes of the axes scale division
Parameters:
xScaleDiv Scale division of the x-axis
 
yScaleDiv Scale division of the y-axis
See also:
QwtPlot::updateAxes()
Reimplemented from QwtPlotItem.

Returns:
true if vertical gridlines are enabled
See also:
enableX()

Returns:
true if minor vertical gridlines are enabled
See also:
enableXMin()

Returns:
the scale division of the x axis

Returns:
true if horizontal gridlines are enabled
See also:
enableY()

Returns:
true if minor horizontal gridlines are enabled
See also:
enableYMin()

Returns:
the scale division of the y axis

Generated automatically by Doxygen for Qwt User's Guide from the source code.
Tue Nov 20 2012 Version 5.2.3

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