Is it possible to position a child object absolutely?

Alien

Hi,
Look at the below code :

ApplicationWindow {
    id:root
    visible: true
    width: 640
    height: 480
    title: qsTr("Hello World")

  Rectangle{
      id:parentRectID
      width: 320
      height: 240
      color: "white"
      border.color: "red"
      border.width: 2
      /*-------------------------------*/
      Rectangle
      {
        id:childID
        width: parent.width/2
        height: parent.height/2
        color: "orange"
        anchors.centerIn: parent
        /*-------------------------------*/
        Rectangle
        {
          id:grandChildID
          width: parent.width/2
          height: parent.height/2
          color: "lightblue"
          x:320
          y:240
          /*I want to use root positioning like otherRectID*/
        }
      }
  }

  Rectangle
  {
    id:otherRectID
    width: 100
    height: 100
    color: "red"
    x:320
    y:240
  }
}

How to make grandChildID positioning from root space?

Eeli K

@Alien See Item.mapFromItem and Item.mapToItem and "Concepts - Visual Coordinates in Qt Quick" in Qt docs.

Alien

Dear @Eeli-K ,
Is there any examples exist to show how can i use them(Item.mapFromItem and Item.mapToItem )

Curtwagner1984

said in Is it possible to position a child object absolutely?:

id:grandChildID

grandChildID x and y parameters are relative to its parent. You can use mapToItem like @Eeli-K said to set the x and y parameters relative to root in the following way: (Assuming you want to set grandChildID to (50,50) relative to root)

ApplicationWindow {
    id:root
    visible: true
    width: 640
    height: 480
    title: qsTr("Hello World")

    Component.onCompleted{
      setGrandChildAbsolutCords();
    }
    ...
        Rectangle
        {
          id:grandChildID
          width: parent.width/2
          height: parent.height/2
          color: "lightblue"
          // x:320
          // y:240
          /*I want to use root positioning like otherRectID*/
        }
      }

    function setGrandChildAbsolutCords(){
      // will translate root (50,50) coordinates to grandChildID item coordinates
      var cords = grandChildID.mapFromItem(root,50,50); 
      grandChildID.x = cords.x
      grandChildID.y = cords.y      
    }
  }

Alien

Dear @Eeli-K and @Curtwagner1984 Thanks it works fine.