Method renderScale

3rdparty/qwt/src/qwt_plot_renderer.cpp:733–821

! \brief Paint a scale into a given rectangle. Paint the scale into a given rectangle. \param plot Plot widget \param painter Painter \param axisId Axis \param startDist Start border distance \param endDist End border distance \param baseDist Base distance \param scaleRect Bounding rectangle for the scale */

   \param scaleRect Bounding rectangle for the scale
 */
void QwtPlotRenderer::renderScale( const QwtPlot* plot, QPainter* painter,
    QwtAxisId axisId, int startDist, int endDist, int baseDist,
    const QRectF& scaleRect ) const
{
    if ( !plot->isAxisVisible( axisId ) )
        return;

    const QwtScaleWidget* scaleWidget = plot->axisWidget( axisId );
    if ( scaleWidget->isColorBarEnabled()
        && scaleWidget->colorBarWidth() > 0 )
    {
        scaleWidget->drawColorBar( painter, scaleWidget->colorBarRect( scaleRect ) );
        baseDist += scaleWidget->colorBarWidth() + scaleWidget->spacing();
    }

    painter->save();

    QwtScaleDraw::Alignment align;
    double x, y, w;

    qreal off = 0.0;
    if ( m_data->layoutFlags & FrameWithScales )
        off = qwtScalePenWidth( plot );

    switch ( axisId )
    {
        case QwtAxis::YLeft:
        {
            x = scaleRect.right() - 1.0 - baseDist - off;
            y = scaleRect.y() + startDist;
            w = scaleRect.height() - startDist - endDist;
            align = QwtScaleDraw::LeftScale;
            break;
        }
        case QwtAxis::YRight:
        {
            x = scaleRect.left() + baseDist + off;
            y = scaleRect.y() + startDist;
            w = scaleRect.height() - startDist - endDist;
            align = QwtScaleDraw::RightScale;
            break;
        }
        case QwtAxis::XTop:
        {
            x = scaleRect.left() + startDist;
            y = scaleRect.bottom() - 1.0 - baseDist - off;
            w = scaleRect.width() - startDist - endDist;
            align = QwtScaleDraw::TopScale;
            break;
        }
        case QwtAxis::XBottom:
        {
            x = scaleRect.left() + startDist;
            y = scaleRect.top() + baseDist + off;
            w = scaleRect.width() - startDist - endDist;
            align = QwtScaleDraw::BottomScale;
            break;
        }