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  1. Qt
  2. QTBUG-78674

QGraphicsScene::addPath(QPainterPath(QPointF)) always initiates path at origin

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: P2: Important
    • Resolution: Out of scope
    • Affects Version/s: 5.12.4
    • Fix Version/s: None
    • Component/s: Widgets: GraphicsView
    • Labels:
      None
    • Platform/s:
      Windows

      Description

      I had the following code in my program, where I am trying to make a pen tool similar to adobe illustrator. 

      pathBeingDrawn = mainScene->addPath(QPainterPath(mouseClickPosition));
      

      Here, the classes are

      QGraphicsPathItem *pathBeingDrawn; QGraphicsScene *mainScene; QPointF mouseClickPosition;

      Anyways, any attempt to draw the path results in the pathBeingDrawn initiating at the origin, even if mouseClickPosition is not QPointF(0,0). I know I can easily resolve this in my code with 

      QPainterPath p(); p.moveTo(mouseClickPosition); pathBeingDrawn->setPath(p);
      

      But I only wish to point out the bug here. Ideally, if there's

      QPainterPath(mouseClickPosition);
      

      then I shouldn't have to substitute it with

      QPainterPath p(); p.moveTo(mouseClickPosition); pathBeingDrawn->setPath(p);

      on the graphics scene. 

      If this is not really a bug, let me know. Though I'm not sure I understand the point of the constructor

      QPainterPath(QPointF &startPoint)

      The image attached should give a good example of what I mean.

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            Assignee:
            vgt Eirik Aavitsland
            Reporter:
            osamakawish Osama Kawish
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              Updated:
              Resolved:

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