MySymbol( QwtSymbol::Style style, const QBrush &brush )
{
QPen pen( Qt::black, 0 );
pen.setJoinStyle( Qt::MiterJoin );
pen.setCosmetic( true );
QPainterPath path = createArrow( QSize( 16, 24 ) );
const QSizeF pathSize = path.boundingRect().size();
setSize( 0.8 * pathSize.toSize() );
setPinPoint( QPointF( 0.0, 0.0 ) );
switch( style )
{
case QwtSymbol::Pixmap:
{
const QSize sz = size();
const double ratio = qMin( sz.width() / pathSize.width(),
sz.height() / pathSize.height() );
QTransform transform;
transform.scale( ratio, ratio );
path = transform.map( path );
if ( isPinPointEnabled() )
{
QPointF pos = transform.map( pinPoint() );
setPinPoint( pos );
}
const QRectF br = path.boundingRect();
int m = 2 + qCeil( pen.widthF() );
QPixmap pm( sz + QSize( 2 * m, 2 * m ) );
pm.fill( Qt::transparent );
QPainter painter( &pm );
painter.setRenderHint( QPainter::Antialiasing, true );
painter.setPen( pen );
painter.setBrush( brush );
painter.translate( m, m );
painter.translate( -br.left(), br.top() );
painter.drawPath( path );
setPixmap( pm );
setSize( pm.size() );
if ( isPinPointEnabled() )
setPinPoint( pinPoint() + QPointF( m, m ) );
break;
}
case QwtSymbol::Graphic:
{
QwtGraphic graphic;
graphic.setRenderHint( QwtGraphic::RenderPensUnscaled );
QPainter painter( &graphic );
painter.setRenderHint( QPainter::Antialiasing, true );
painter.setPen( pen );
painter.setBrush( brush );
painter.drawPath( path );
painter.end();
setGraphic( graphic );
break;
}
case QwtSymbol::SvgDocument:
{
QBuffer buf;
QSvgGenerator generator;
generator.setOutputDevice( &buf );
QPainter painter( &generator );
painter.setRenderHint( QPainter::Antialiasing, true );
painter.setPen( pen );
painter.setBrush( brush );
painter.drawPath( path );
painter.end();
setSvgDocument( buf.data() );
break;
}
case QwtSymbol::Path:
default:
{
setPen( pen );
setBrush( brush );
setPath( path );
}
}
}
//--------------------------------------------------------------------------------------------------
/// Internal class to support labels on symbols
//--------------------------------------------------------------------------------------------------
RiuQwtSymbol::RiuQwtSymbol(PointSymbolEnum riuStyle, const QString& label, LabelPosition labelPosition)
: QwtSymbol(QwtSymbol::NoSymbol), m_label(label), m_labelPosition(labelPosition)
{
QwtSymbol::Style style = QwtSymbol::NoSymbol;
switch (riuStyle)
{
case SYMBOL_ELLIPSE:
style = QwtSymbol::Ellipse;
break;
case SYMBOL_RECT:
style = QwtSymbol::Rect;
break;
case SYMBOL_DIAMOND:
style = QwtSymbol::Diamond;
break;
case SYMBOL_TRIANGLE:
style = QwtSymbol::Triangle;
break;
case SYMBOL_CROSS:
style = QwtSymbol::Cross;
break;
case SYMBOL_XCROSS:
style = QwtSymbol::XCross;
break;
case SYMBOL_DOWN_TRIANGLE:
style = QwtSymbol::DTriangle;
break;
case SYMBOL_LEFT_TRIANGLE:
style = QwtSymbol::Path;
{
QPainterPath path;
path.moveTo(0, 0);
path.lineTo(-10, 10);
path.lineTo(0, 20);
path.lineTo(0, 0);
setPath(path);
setPinPoint(QPointF(0, 0));
}
break;
case SYMBOL_RIGHT_TRIANGLE:
style = QwtSymbol::Path;
{
QPainterPath path;
path.moveTo(0, 0);
path.lineTo(10, 10);
path.lineTo(0, 20);
path.lineTo(0, 0);
setPath(path);
setPinPoint(QPointF(0, 0));
}
break;
case SYMBOL_LEFT_ANGLED_TRIANGLE:
style = QwtSymbol::Path;
{
QPainterPath path;
path.moveTo(0, 0);
path.lineTo(0, 10);
path.lineTo(-10, 10);
path.lineTo(0, 0);
setPath(path);
setPinPoint(QPointF(0, 10));
}
break;
case SYMBOL_RIGHT_ANGLED_TRIANGLE:
style = QwtSymbol::Path;
{
QPainterPath path;
path.moveTo(0, 0);
path.lineTo(0, 10);
path.lineTo(10, 10);
path.lineTo(0, 0);
setPath(path);
setPinPoint(QPointF(0, 10));
}
break;
case SYMBOL_UP_TRIANGLE:
style = QwtSymbol::UTriangle;
break;
case SYMBOL_STAR1:
style = QwtSymbol::Star1;
break;
case SYMBOL_STAR2:
style = QwtSymbol::Star2;
break;
case SYMBOL_HEXAGON:
style = QwtSymbol::Hexagon;
break;
default:
break;
}
setStyle(style);
}
