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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
    #7

    What i should to override?

    mrjjM 1 Reply Last reply
    0
    • K Kaznachei

      What i should to override?

      mrjjM Offline
      mrjjM Offline
      mrjj
      Lifetime Qt Champion
      wrote on last edited by mrjj
      #8

      @Kaznachei
      Just saw something

      docs says

      The shape of the mouse cursor on a QTextEdit is Qt::IBeamCursor by default. It can be changed through the viewport()'s cursor property.

      let me try it. 1 min

      1 Reply Last reply
      0
      • mrjjM Offline
        mrjjM Offline
        mrjj
        Lifetime Qt Champion
        wrote on last edited by
        #9

        Hi
        Try
        ui->textEdit->viewport()->setCursor(Qt::ArrowCursor);
        works here :)

        1 Reply Last reply
        2
        • K Offline
          K Offline
          Kaznachei
          wrote on last edited by
          #10

          But if will be use it when i want to QTextEdit doesnt react to events(sometimes) it would be worse to use setCursor? (Because it reacts, and it spend time and resources)

          mrjjM 1 Reply Last reply
          0
          • K Kaznachei

            But if will be use it when i want to QTextEdit doesnt react to events(sometimes) it would be worse to use setCursor? (Because it reacts, and it spend time and resources)

            mrjjM Offline
            mrjjM Offline
            mrjj
            Lifetime Qt Champion
            wrote on last edited by mrjj
            #11

            @Kaznachei
            setCursor is only called when you dont want the I beam cursor so should not be expensive.
            An eventFilter would also cost CPU
            so i think a ReadOnly TextEdit is as light as one with eventFilter.
            However, why not try it out and see what you think ?

            1 Reply Last reply
            2
            • K Offline
              K Offline
              Kaznachei
              wrote on last edited by
              #12

              It works, really thank you. Just i wanted to know which way is cheaper to solve my problem. As for me all that i saw was to too expensive. Is this way is ok? Just i wrote some SLOTS in my custom GraphicsRectItem
              void lineChoosed()
              {
              text->viewport()->setCursor(Qt::ArrowCursor);
              text->setReadOnly(true);
              setAcceptHoverEvents(false);
              setCursor(Qt::ArrowCursor);
              }
              void textChoosed()
              {
              text->viewport()->setCursor(Qt::IBeamCursor);
              text->setReadOnly(false);
              setAcceptHoverEvents(true);
              }

              and in my custom GraphicsView when i create a new one GraphicsRectITem

              connect(this, &GraphicsView::lineChoosed, item, &RectItem::lineChoosed);
              connect(this, &GraphicsView::textChoosed, item, &RectItem::textChoosed);

              That means when i emit lineChoosed or textChoosed then are called my slots-functions as much as i have my custom GraphicsRectItem. Is it okay?

              mrjjM 1 Reply Last reply
              0
              • K Kaznachei

                It works, really thank you. Just i wanted to know which way is cheaper to solve my problem. As for me all that i saw was to too expensive. Is this way is ok? Just i wrote some SLOTS in my custom GraphicsRectItem
                void lineChoosed()
                {
                text->viewport()->setCursor(Qt::ArrowCursor);
                text->setReadOnly(true);
                setAcceptHoverEvents(false);
                setCursor(Qt::ArrowCursor);
                }
                void textChoosed()
                {
                text->viewport()->setCursor(Qt::IBeamCursor);
                text->setReadOnly(false);
                setAcceptHoverEvents(true);
                }

                and in my custom GraphicsView when i create a new one GraphicsRectITem

                connect(this, &GraphicsView::lineChoosed, item, &RectItem::lineChoosed);
                connect(this, &GraphicsView::textChoosed, item, &RectItem::textChoosed);

                That means when i emit lineChoosed or textChoosed then are called my slots-functions as much as i have my custom GraphicsRectItem. Is it okay?

                mrjjM Offline
                mrjjM Offline
                mrjj
                Lifetime Qt Champion
                wrote on last edited by
                #13

                @Kaznachei
                Hi, yes that should be fine.
                Should not be heavy.

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                0
                • 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

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