C++ (Cpp) QGraphicsLineItem::setCacheModeの例

コード例 #1

ファイル: Axis.cpp プロジェクト: corentindesfarges/fw4spl

void Axis::buildAxis()
{
    m_color.setCosmetic(true);
    const int nbValues = (m_max - m_min) / m_interval + 1;
    m_layer = new QGraphicsItemGroup();

    for(int i = 0; i < nbValues; ++i)
    {
        QGraphicsLineItem* tick = new QGraphicsLineItem(0, 0, 0, 0);
        tick->setCacheMode( QGraphicsItem::DeviceCoordinateCache );
        tick->setPen( m_color );

        m_ticks.push_back( tick );
        m_layer->addToGroup( tick );
    }

    m_line = new QGraphicsLineItem();
    m_line->setCacheMode( QGraphicsItem::DeviceCoordinateCache );
    m_line->setPen( m_color );

    if( m_showLine )
    {
        m_layer->addToGroup( m_line );
    }

    // Adjust the layer's position and zValue depending on the associated axis
    m_layer->setPos( m_xAxis->getOrigin(), m_yAxis->getOrigin() );
    m_layer->setZValue( m_zValue );

    // Add to the scene the unique item which gather the whole set of rectangle graphic items:
    this->getScene2DRender()->getScene()->addItem( m_layer );
}