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  4. Disable changing of shape of cursor when it inside of QTextEdit
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Disable changing of shape of cursor when it inside of QTextEdit

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  • K Offline
    K Offline
    Kaznachei
    wrote on last edited by Kaznachei
    #14

    Thank you a lot. May i know how can i realize it using eventFilter? I tried
    text->setObjectName("text');

    and in GraphicsView::eventFilter(QObject* obj, QEvent *event)
    {
    if (obj->objectName() == "test") return false;
    return QObject::eventFilter(obj, event);
    }

    (obj->objectName() == "test") works but shape of cursor still changing

    mrjjM 1 Reply Last reply
    0
    • K Kaznachei

      Thank you a lot. May i know how can i realize it using eventFilter? I tried
      text->setObjectName("text');

      and in GraphicsView::eventFilter(QObject* obj, QEvent *event)
      {
      if (obj->objectName() == "test") return false;
      return QObject::eventFilter(obj, event);
      }

      (obj->objectName() == "test") works but shape of cursor still changing

      mrjjM Offline
      mrjjM Offline
      mrjj
      Lifetime Qt Champion
      wrote on last edited by mrjj
      #15

      @Kaznachei
      Hi
      it's actually the viewport that does the most of it, so assign (installEventFilter) the eventFilter to
      text->viewport() instead.
      and check for viewports name instead. (or set it to test also)

      1 Reply Last reply
      0
      • K Offline
        K Offline
        Kaznachei
        wrote on last edited by
        #16

        Like this ? I wrote it in GraphicsView
        RectItem* item = new RectItem;
        item->setObjectName("I");
        item->setPos(event->pos() - QPoint(item->rect().width()/2, item->rect().height()/2));
        item->text->viewport()->installEventFilter(this);

        mrjjM 1 Reply Last reply
        0
        • K Kaznachei

          Like this ? I wrote it in GraphicsView
          RectItem* item = new RectItem;
          item->setObjectName("I");
          item->setPos(event->pos() - QPoint(item->rect().width()/2, item->rect().height()/2));
          item->text->viewport()->installEventFilter(this);

          mrjjM Offline
          mrjjM Offline
          mrjj
          Lifetime Qt Champion
          wrote on last edited by
          #17

          @Kaznachei
          yes, looks right.
          "this" being GraphicsView with the eventFilter function, i assume.

          1 Reply Last reply
          0
          • K Offline
            K Offline
            Kaznachei
            wrote on last edited by
            #18

            Oh, May i realize it? I want to my GraphicsView get events of my GraphicsItem. I want to my GraphicsView filters events of my GraphicsItem .

            mrjjM 1 Reply Last reply
            0
            • K Kaznachei

              Oh, May i realize it? I want to my GraphicsView get events of my GraphicsItem. I want to my GraphicsView filters events of my GraphicsItem .

              mrjjM Offline
              mrjjM Offline
              mrjj
              Lifetime Qt Champion
              wrote on last edited by
              #19

              @Kaznachei
              Hi
              The syntax is
              monitoredObj->installEventFilter(filterObj);

              monitoredObj = GraphicsItem

              filterObj = GraphicsView
              and this should have the
              :eventFilter(QObject* obj, QEvent *event)
              function.

              1 Reply Last reply
              0
              • K Offline
                K Offline
                Kaznachei
                wrote on last edited by
                #20

                In GraphicsView
                RectItem* item = new RectItem;
                item->setObjectName("I");
                item->setPos(event->pos() - QPoint(item->rect().width()/2, item->rect().height()/2));
                item->installEventFilter(this);

                and

                bool eventFilter(QObject *obj, QEvent *event)
                {
                if (obj->objectName() == "I")
                qDebug() << "ok"
                return QGraphicsView::eventFilter(obj, event);
                }

                qDebug() doesn`t write.

                mrjjM 1 Reply Last reply
                0
                • K Kaznachei

                  In GraphicsView
                  RectItem* item = new RectItem;
                  item->setObjectName("I");
                  item->setPos(event->pos() - QPoint(item->rect().width()/2, item->rect().height()/2));
                  item->installEventFilter(this);

                  and

                  bool eventFilter(QObject *obj, QEvent *event)
                  {
                  if (obj->objectName() == "I")
                  qDebug() << "ok"
                  return QGraphicsView::eventFilter(obj, event);
                  }

                  qDebug() doesn`t write.

                  mrjjM Offline
                  mrjjM Offline
                  mrjj
                  Lifetime Qt Champion
                  wrote on last edited by
                  #21

                  @Kaznachei
                  Hi
                  try with

                  bool eventFilter(QObject *obj, QEvent *event)
                  {
                  
                  qDebug() << obj->objectName();
                  
                  if (obj->objectName() == "I")
                  qDebug() << "ok"
                  return QGraphicsView::eventFilter(obj, event);
                  }
                  

                  and see what is going on

                  1 Reply Last reply
                  0
                  • K Offline
                    K Offline
                    Kaznachei
                    wrote on last edited by
                    #22

                    qDebug write only this

                    ""
                    ""
                    ""
                    ""
                    ""
                    ""
                    ""
                    ""
                    ""
                    ""
                    ""
                    ""
                    ""
                    ""
                    ""
                    ""
                    ""
                    ""
                    ""
                    ""
                    ""
                    ""
                    ""
                    ""
                    ""

                    mrjjM 1 Reply Last reply
                    0
                    • K Kaznachei

                      qDebug write only this

                      ""
                      ""
                      ""
                      ""
                      ""
                      ""
                      ""
                      ""
                      ""
                      ""
                      ""
                      ""
                      ""
                      ""
                      ""
                      ""
                      ""
                      ""
                      ""
                      ""
                      ""
                      ""
                      ""
                      ""
                      ""

                      mrjjM Offline
                      mrjjM Offline
                      mrjj
                      Lifetime Qt Champion
                      wrote on last edited by
                      #23

                      @Kaznachei
                      Hmm. odd.
                      Try
                      qDebug() << obj->metaObject()->className()
                      and see what type it is.

                      Else use the debugger to see what obj is.

                      1 Reply Last reply
                      0
                      • K Offline
                        K Offline
                        Kaznachei
                        wrote on last edited by
                        #24

                        only
                        QScrollBar
                        QScrollBar
                        QScrollBar
                        QScrollBar
                        QScrollBar
                        QScrollBar

                        1 Reply Last reply
                        0
                        • mrjjM Offline
                          mrjjM Offline
                          mrjj
                          Lifetime Qt Champion
                          wrote on last edited by
                          #25

                          Hi
                          Maybe eventFilters do not work on QGraphicsItems
                          I have never tested it but since they are not qobjects, i think its a no go.

                          1 Reply Last reply
                          0
                          • K Offline
                            K Offline
                            Kaznachei
                            wrote on last edited by
                            #26

                            Yes. I read that QGraphicsObject has eventFilter, but not QGraphicsItem. Thank you a lot for ur helping.

                            mrjjM 1 Reply Last reply
                            0
                            • K Kaznachei

                              Yes. I read that QGraphicsObject has eventFilter, but not QGraphicsItem. Thank you a lot for ur helping.

                              mrjjM Offline
                              mrjjM Offline
                              mrjj
                              Lifetime Qt Champion
                              wrote on last edited by
                              #27

                              @Kaznachei
                              yes QGraphicsObject also inherits from QObject so that makes good sense it can use event filters too.
                              You are most welcome.

                              1 Reply Last reply
                              0
                              • SGaistS Offline
                                SGaistS Offline
                                SGaist
                                Lifetime Qt Champion
                                wrote on last edited by
                                #28

                                Hi,

                                You might be interested by the installSceneEventFilter method

                                Interested in AI ? www.idiap.ch
                                Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

                                1 Reply Last reply
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