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QwtPlotGrid
Langue: en
Version: 375025 (fedora - 01/12/10)
Section: 3 (Bibliothèques de fonctions)
Sommaire
- NAME
- SYNOPSIS
- Detailed Description
- Constructor & Destructor Documentation
- Member Function Documentation
- void QwtPlotGrid::draw (QPainter * painter, const QwtScaleMap & xMap, const QwtScaleMap & yMap, const QRect & canvasRect) const [virtual]
- void QwtPlotGrid::enableX (bool tf)
- void QwtPlotGrid::enableXMin (bool tf)
- void QwtPlotGrid::enableY (bool tf)
- void QwtPlotGrid::enableYMin (bool tf)
- const QPen & QwtPlotGrid::majPen () constReturns:
- const QPen & QwtPlotGrid::minPen () constReturns:
- int QwtPlotGrid::rtti () const [virtual]Returns:
- void QwtPlotGrid::setMajPen (const QPen & pen)Assign a pen for the major gridlines
- void QwtPlotGrid::setMinPen (const QPen & pen)Assign a pen for the minor gridlines
- void QwtPlotGrid::setPen (const QPen & pen)Assign a pen for both major and minor gridlines
- void QwtPlotGrid::setXDiv (const QwtScaleDiv & scaleDiv)Assign an x axis scale division
- void QwtPlotGrid::setYDiv (const QwtScaleDiv & scaleDiv)Assign a y axis division
- void QwtPlotGrid::updateScaleDiv (const QwtScaleDiv & xScaleDiv, const QwtScaleDiv & yScaleDiv) [virtual]Update the grid to changes of the axes scale division
- bool QwtPlotGrid::xEnabled () constReturns:
- bool QwtPlotGrid::xMinEnabled () constReturns:
- const QwtScaleDiv & QwtPlotGrid::xScaleDiv () constReturns:
- bool QwtPlotGrid::yEnabled () constReturns:
- bool QwtPlotGrid::yMinEnabled () constReturns:
- const QwtScaleDiv & QwtPlotGrid::yScaleDiv () constReturns:
- Author
NAME
QwtPlotGrid -A class which draws a coordinate grid.
SYNOPSIS
#include <qwt_plot_grid.h>
Inherits QwtPlotItem.
Public Member Functions
QwtPlotGrid ()
virtual ~QwtPlotGrid ()
virtual int rtti () const
void enableX (bool tf)
bool xEnabled () const
void enableY (bool tf)
bool yEnabled () const
void enableXMin (bool tf)
bool xMinEnabled () const
void enableYMin (bool tf)
bool yMinEnabled () const
void setXDiv (const QwtScaleDiv &sx)
const QwtScaleDiv & xScaleDiv () const
void setYDiv (const QwtScaleDiv &sy)
const QwtScaleDiv & yScaleDiv () const
void setPen (const QPen &p)
void setMajPen (const QPen &p)
const QPen & majPen () const
void setMinPen (const QPen &p)
const QPen & minPen () const
virtual void draw (QPainter *p, const QwtScaleMap &xMap, const QwtScaleMap &yMap, const QRect &rect) const
virtual void updateScaleDiv (const QwtScaleDiv &xMap, const QwtScaleDiv &yMap)
Detailed Description
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.
Constructor & Destructor Documentation
QwtPlotGrid::QwtPlotGrid () [explicit]
Enables major grid, disables minor grid.
QwtPlotGrid::~QwtPlotGrid () [virtual]
Destructor.
Member Function Documentation
void QwtPlotGrid::draw (QPainter * painter, const QwtScaleMap & xMap, const QwtScaleMap & yMap, const QRect & canvasRect) const [virtual]
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.
void QwtPlotGrid::enableX (bool tf)
Enable or disable vertical gridlines. Parameters:
- tf Enable (true) or disable
See also:
- Minor gridlines can be enabled or disabled with enableXMin()
void QwtPlotGrid::enableXMin (bool tf)
Enable or disable minor vertical gridlines. Parameters:
- tf Enable (true) or disable
See also:
- enableX()
void QwtPlotGrid::enableY (bool tf)
Enable or disable horizontal gridlines. Parameters:
- tf Enable (true) or disable
See also:
- Minor gridlines can be enabled or disabled with enableYMin()
void QwtPlotGrid::enableYMin (bool tf)
Enable or disable minor horizontal gridlines. Parameters:
- tf Enable (true) or disable
See also:
- enableY()
const QPen & QwtPlotGrid::majPen () constReturns:
- the pen for the major gridlines
See also:
- setMajPen(), setMinPen(), setPen()
const QPen & QwtPlotGrid::minPen () constReturns:
- the pen for the minor gridlines
See also:
- setMinPen(), setMajPen(), setPen()
int QwtPlotGrid::rtti () const [virtual]Returns:
- QwtPlotItem::Rtti_PlotGrid
Reimplemented from QwtPlotItem.
void QwtPlotGrid::setMajPen (const QPen & pen)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()
void QwtPlotGrid::setMinPen (const QPen & pen)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()
void QwtPlotGrid::setPen (const QPen & pen)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()
void QwtPlotGrid::setXDiv (const QwtScaleDiv & scaleDiv)Assign an x axis scale division
Parameters:
- scaleDiv Scale division
void QwtPlotGrid::setYDiv (const QwtScaleDiv & scaleDiv)Assign a y axis division
Parameters:
- scaleDiv Scale division
void QwtPlotGrid::updateScaleDiv (const QwtScaleDiv & xScaleDiv, const QwtScaleDiv & yScaleDiv) [virtual]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.
bool QwtPlotGrid::xEnabled () constReturns:
- true if vertical gridlines are enabled
See also:
- enableX()
bool QwtPlotGrid::xMinEnabled () constReturns:
- true if minor vertical gridlines are enabled
See also:
- enableXMin()
const QwtScaleDiv & QwtPlotGrid::xScaleDiv () constReturns:
- the scale division of the x axis
bool QwtPlotGrid::yEnabled () constReturns:
- true if horizontal gridlines are enabled
See also:
- enableY()
bool QwtPlotGrid::yMinEnabled () constReturns:
- true if minor horizontal gridlines are enabled
See also:
- enableYMin()
const QwtScaleDiv & QwtPlotGrid::yScaleDiv () constReturns:
- the scale division of the y axis
Author
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