/*!
Change the alignment of the scale
The alignment sets the orientation of the scale and the position of
the ticks:
- QwtScaleDraw::BottomScale: horizontal, ticks below
- QwtScaleDraw::TopScale: horizontal, ticks above
- QwtScaleDraw::LeftScale: vertical, ticks left
- QwtScaleDraw::RightScale: vertical, ticks right
For horizontal scales the position corresponds to QwtPlotItem::yAxis(),
otherwise to QwtPlotItem::xAxis().
\sa scaleDraw(), QwtScaleDraw::alignment(), setPosition()
*/
void QwtPlotScaleItem::setAlignment( QwtScaleDraw::Alignment alignment )
{
QwtScaleDraw *sd = d_data->scaleDraw;
if ( sd->alignment() != alignment )
{
sd->setAlignment( alignment );
itemChanged();
}
}
/*!
\brief Constructor
Enables major and disables minor grid lines.
The azimuth and right radial axis are visible. all other axes
are hidden. Autoscaling is enabled.
*/
QwtPolarGrid::QwtPolarGrid():
QwtPolarItem( QwtText( "Grid" ) )
{
d_data = new PrivateData;
for ( int axisId = 0; axisId < QwtPolar::AxesCount; axisId++ )
{
AxisData &axis = d_data->axisData[axisId];
switch ( axisId )
{
case QwtPolar::AxisAzimuth:
{
axis.scaleDraw = new QwtRoundScaleDraw;
axis.scaleDraw->setTickLength( QwtScaleDiv::MinorTick, 2 );
axis.scaleDraw->setTickLength( QwtScaleDiv::MediumTick, 2 );
axis.scaleDraw->setTickLength( QwtScaleDiv::MajorTick, 4 );
axis.isVisible = true;
break;
}
case QwtPolar::AxisLeft:
{
QwtScaleDraw *scaleDraw = new QwtScaleDraw;
scaleDraw->setAlignment( QwtScaleDraw::BottomScale );
axis.scaleDraw = scaleDraw;
axis.isVisible = false;
break;
}
case QwtPolar::AxisRight:
{
QwtScaleDraw *scaleDraw = new QwtScaleDraw;
scaleDraw->setAlignment( QwtScaleDraw::BottomScale );
axis.scaleDraw = scaleDraw;
axis.isVisible = true;
break;
}
case QwtPolar::AxisTop:
{
QwtScaleDraw *scaleDraw = new QwtScaleDraw;
scaleDraw->setAlignment( QwtScaleDraw::LeftScale );
axis.scaleDraw = scaleDraw;
axis.isVisible = false;
break;
}
case QwtPolar::AxisBottom:
{
QwtScaleDraw *scaleDraw = new QwtScaleDraw;
scaleDraw->setAlignment( QwtScaleDraw::LeftScale );
axis.scaleDraw = scaleDraw;
axis.isVisible = true;
break;
}
default:;
}
}
d_data->attributes = AutoScaling;
d_data->displayFlags = 0;
d_data->displayFlags |= SmartOriginLabel;
d_data->displayFlags |= HideMaxRadiusLabel;
d_data->displayFlags |= ClipAxisBackground;
d_data->displayFlags |= SmartScaleDraw;
d_data->displayFlags |= ClipGridLines;
setZ( 10.0 );
#if QT_VERSION >= 0x040000
setRenderHint( RenderAntialiased, true );
#endif
}