QwtPlotGrid(3) Qwt User's Guide QwtPlotGrid(3) NAME QwtPlotGrid - A class which draws a coordinate grid. SYNOPSIS #include Inherits QwtPlotItem. Public Member Functions QwtPlotGrid () Enables major grid, disables minor grid. virtual ~QwtPlotGrid () Destructor. virtual int rtti () const override void enableX (bool) Enable or disable vertical grid lines. bool xEnabled () const void enableY (bool) Enable or disable horizontal grid lines. bool yEnabled () const void enableXMin (bool) Enable or disable minor vertical grid lines. bool xMinEnabled () const void enableYMin (bool) Enable or disable minor horizontal grid lines. bool yMinEnabled () const void setXDiv (const QwtScaleDiv &) const QwtScaleDiv & xScaleDiv () const void setYDiv (const QwtScaleDiv &) const QwtScaleDiv & yScaleDiv () const void setPen (const QColor &, qreal width=0.0, Qt::PenStyle=Qt::SolidLine) void setPen (const QPen &) void setMajorPen (const QColor &, qreal width=0.0, Qt::PenStyle=Qt::SolidLine) void setMajorPen (const QPen &) const QPen & majorPen () const void setMinorPen (const QColor &, qreal width=0.0, Qt::PenStyle=Qt::SolidLine) void setMinorPen (const QPen &) const QPen & minorPen () const virtual void draw (QPainter *, const QwtScaleMap &xMap, const QwtScaleMap &yMap, const QRectF &canvasRect) const override Draw the grid. virtual void updateScaleDiv (const QwtScaleDiv &xScaleDiv, const QwtScaleDiv &yScaleDiv) override Additional Inherited Members 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 grid lines. The locations of the grid lines 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. Definition at line 33 of file qwt_plot_grid.h. Member Function Documentation void QwtPlotGrid::draw (QPainter * painter, const QwtScaleMap & xMap, const QwtScaleMap & yMap, const QRectF & canvasRect) const [override], [virtual] Draw the grid. The grid is drawn into the bounding rectangle such that grid lines 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 rectangle of the plot canvas Implements QwtPlotItem. Definition at line 282 of file qwt_plot_grid.cpp. void QwtPlotGrid::enableX (bool on) Enable or disable vertical grid lines. Parameters on Enable (true) or disable See also Minor grid lines can be enabled or disabled with enableXMin() Definition at line 76 of file qwt_plot_grid.cpp. void QwtPlotGrid::enableXMin (bool on) Enable or disable minor vertical grid lines. Parameters on Enable (true) or disable See also enableX() Definition at line 108 of file qwt_plot_grid.cpp. void QwtPlotGrid::enableY (bool on) Enable or disable horizontal grid lines. Parameters on Enable (true) or disable See also Minor grid lines can be enabled or disabled with enableYMin() Definition at line 92 of file qwt_plot_grid.cpp. void QwtPlotGrid::enableYMin (bool on) Enable or disable minor horizontal grid lines. Parameters on Enable (true) or disable See also enableY() Definition at line 124 of file qwt_plot_grid.cpp. const QPen & QwtPlotGrid::majorPen () const Returns the pen for the major grid lines See also setMajorPen(), setMinorPen(), setPen() Definition at line 367 of file qwt_plot_grid.cpp. const QPen & QwtPlotGrid::minorPen () const Returns the pen for the minor grid lines See also setMinorPen(), setMajorPen(), setPen() Definition at line 376 of file qwt_plot_grid.cpp. int QwtPlotGrid::rtti () const [override], [virtual] Returns QwtPlotItem::Rtti_PlotGrid Reimplemented from QwtPlotItem. Definition at line 64 of file qwt_plot_grid.cpp. void QwtPlotGrid::setMajorPen (const QColor & color, qreal width = 0.0, Qt::PenStyle style = Qt::SolidLine) Build and assign a pen for both major grid lines In Qt5 the default pen width is 1.0 ( 0.0 in Qt4 ) what makes it non cosmetic ( see QPen::isCosmetic() ). This method has been introduced to hide this incompatibility. Parameters color Pen color width Pen width style Pen style See also pen(), brush() Definition at line 212 of file qwt_plot_grid.cpp. void QwtPlotGrid::setMajorPen (const QPen & pen) Assign a pen for the major grid lines Parameters pen Pen See also majorPen(), setMinorPen(), setPen() Definition at line 223 of file qwt_plot_grid.cpp. void QwtPlotGrid::setMinorPen (const QColor & color, qreal width = 0.0, Qt::PenStyle style = Qt::SolidLine) Build and assign a pen for the minor grid lines In Qt5 the default pen width is 1.0 ( 0.0 in Qt4 ) what makes it non cosmetic ( see QPen::isCosmetic() ). This method has been introduced to hide this incompatibility. Parameters color Pen color width Pen width style Pen style See also pen(), brush() Definition at line 247 of file qwt_plot_grid.cpp. void QwtPlotGrid::setMinorPen (const QPen & pen) Assign a pen for the minor grid lines Parameters pen Pen See also minorPen(), setMajorPen(), setPen() Definition at line 258 of file qwt_plot_grid.cpp. void QwtPlotGrid::setPen (const QColor & color, qreal width = 0.0, Qt::PenStyle style = Qt::SolidLine) Build and assign a pen for both major and minor grid lines In Qt5 the default pen width is 1.0 ( 0.0 in Qt4 ) what makes it non cosmetic ( see QPen::isCosmetic() ). This method has been introduced to hide this incompatibility. Parameters color Pen color width Pen width style Pen style See also pen(), brush() Definition at line 176 of file qwt_plot_grid.cpp. void QwtPlotGrid::setPen (const QPen & pen) Assign a pen for both major and minor grid lines Parameters pen Pen See also setMajorPen(), setMinorPen() Definition at line 187 of file qwt_plot_grid.cpp. void QwtPlotGrid::setXDiv (const QwtScaleDiv & scaleDiv) Assign an x axis scale division Parameters scaleDiv Scale division Definition at line 140 of file qwt_plot_grid.cpp. void QwtPlotGrid::setYDiv (const QwtScaleDiv & scaleDiv) Assign a y axis division Parameters scaleDiv Scale division Definition at line 154 of file qwt_plot_grid.cpp. void QwtPlotGrid::updateScaleDiv (const QwtScaleDiv & xScaleDiv, const QwtScaleDiv & yScaleDiv) [override], [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. Definition at line 438 of file qwt_plot_grid.cpp. bool QwtPlotGrid::xEnabled () const Returns true if vertical grid lines are enabled See also enableX() Definition at line 385 of file qwt_plot_grid.cpp. bool QwtPlotGrid::xMinEnabled () const Returns true if minor vertical grid lines are enabled See also enableXMin() Definition at line 394 of file qwt_plot_grid.cpp. const QwtScaleDiv & QwtPlotGrid::xScaleDiv () const Returns the scale division of the x axis Definition at line 419 of file qwt_plot_grid.cpp. bool QwtPlotGrid::yEnabled () const Returns true if horizontal grid lines are enabled See also enableY() Definition at line 403 of file qwt_plot_grid.cpp. bool QwtPlotGrid::yMinEnabled () const Returns true if minor horizontal grid lines are enabled See also enableYMin() Definition at line 412 of file qwt_plot_grid.cpp. const QwtScaleDiv & QwtPlotGrid::yScaleDiv () const Returns the scale division of the y axis Definition at line 425 of file qwt_plot_grid.cpp. Author Generated automatically by Doxygen for Qwt User's Guide from the source code. Version 6.2.0 Sun Jul 18 2021 QwtPlotGrid(3)