Method sizeHint

3rdparty/qwt/src/qwt_plot.cpp:480–513

! \return Size hint for the plot widget \sa minimumSizeHint() */

   \sa minimumSizeHint()
 */
QSize QwtPlot::sizeHint() const
{
    int dw = 0;
    int dh = 0;

    for ( int axisPos = 0; axisPos < QwtAxis::AxisPositions; axisPos++ )
    {
        {
            const QwtAxisId axisId( axisPos );

            if ( isAxisVisible( axisId ) )
            {
                const int niceDist = 40;
                const QwtScaleWidget* scaleWidget = axisWidget( axisId );
                const QwtScaleDiv& scaleDiv = scaleWidget->scaleDraw()->scaleDiv();
                const int majCnt = scaleDiv.ticks( QwtScaleDiv::MajorTick ).count();

                const QSize hint = scaleWidget->minimumSizeHint();

                if ( QwtAxis::isYAxis( axisPos ) )
                {
                    const int hDiff = ( majCnt - 1 ) * niceDist - hint.height();
                    dh = qMax( dh, hDiff );
                }
                else
                {
                    const int wDiff = ( majCnt - 1 ) * niceDist - hint.width();
                    dw = qMax( dw, wDiff );
                }
            }
        }
    }
    return minimumSizeHint() + QSize( dw, dh );
}

/*!
   \brief Return a minimum size hint