C++ (Cpp) QwtSymbol::pixmap示例

示例#1

文件： qwt_symbol.cpp 项目： CaptainFalco/OpenPilot

static inline void qwtDrawPixmapSymbols( QPainter *painter,
    const QPointF *points, int numPoints, const QwtSymbol &symbol )
{
    QSize size = symbol.size();
    if ( size.isEmpty() )
        size = symbol.pixmap().size();

    const QTransform transform = painter->transform();
    if ( transform.isScaling() )
    {
        const QRect r( 0, 0, size.width(), size.height() );
        size = transform.mapRect( r ).size();
    }

    QPixmap pm = symbol.pixmap();
    if ( pm.size() != size )
        pm = pm.scaled( size );
    
    QPointF pinPoint( 0.5 * size.width(), 0.5 * size.height() );
    if ( symbol.isPinPointEnabled() )
        pinPoint = symbol.pinPoint();

    painter->resetTransform();

    for ( int i = 0; i < numPoints; i++ )
    {
        const QPointF pos = transform.map( points[i] ) - pinPoint;

        QwtPainter::drawPixmap( painter, 
            QRect( pos.toPoint(), pm.size() ), pm );
    }
}