add qpainterpath into a QProgressBar

swankster

I have a CustomWidget plugin. This widget is a QFrame with the below implementation hierarchy. My Widget is working well, but I am struggling with adding a qpainter diamond shape into the qProgressBar widget. If I change my parent to spValDiamond ( new QPainter( this ) ) my diamond appears fine in my outer frame. But when set it parent to the pvValBar spValDiamond ( new QPainter( pvValBar ) ) i seem to completely loose my diamond. I have attempted making the progressbar transparent with no success.
I am creating my image with QpainterPath and then attempting to insert that image into my QProgressBar. Once their, it will move with the spValLine.

Controller::Controller( QWidget *parent ) :
    QFrame( parent )
  , ctrlIdLabel( new QLabel )
  , ctrlOnButton( new QPushButton )
  , idOnOffHLayout( new QHBoxLayout )
  , pvFillFrame( new QFrame )
  , pvValBar( new QProgressBar )
  , spValLine ( new QLineEdit( pvValBar ) )
  , spValDiamond ( new QPainter( pvValBar ) )
  , pvValEdit ( new QLineEdit( pvValBar ) )
  , spValEdit ( new QLineEdit )
  , pvSpVLayout( new QVBoxLayout )
  , ssrValBar( new QProgressBar )
  , pvSpSsrHLayout( new QHBoxLayout )
  , ctrlVLayout( new QVBoxLayout )
{

    path = new QPainterPath();
    QRectF rect(5, 10, 6, 8 );
    path->moveTo(rect.center().x(), rect.top());
    path->lineTo(rect.right(), rect.center().y());
    path->lineTo(rect.center().x(), rect.bottom());
    path->lineTo(rect.left(), rect.center().y());
    path->lineTo(rect.center().x(), rect.top());
}

void Controller::paintEvent( QPaintEvent* )
{
    ctrlOnOffButton();
    pvProgressBarStyleSheet();
    drawSpLine();
    pvLineEditStyleSheet();
    spLineEditStyleSheet();
    ssrProgressBarStyleSheet();
}

void Controller::drawSpLine()
{
    int heightValue = (int)qRound( (float)m_spVal / m_spValMax * pvValBar->height() );
    spValLine->move( 0, pvValBar->height() - heightValue );

    spValDiamond->setBrush(QBrush(Qt::red));
    spValDiamond->fillPath(*path, QBrush(Qt::red));
}

I assume I am just missing something simple. but any direction would be very helpful. Thank you.

SGaist

Hi,

You can't paint on a different widget.

If you want to customize the QProgressBar, then you have to subclass it and do the painting in its own paintEvent.

swankster

thank you for the direction.