Positioner QML Type | Qt Quick 5.12.7

Qt 5.12 | Qt Quick | QML Types | Positioner QML Type

Qt 5.12.7 Reference Documentation

# Positioner QML Type

Provides attached properties that contain details on where an item exists in a positioner. More...

Import Statement: | import QtQuick 2.12

- List of all members, including inherited members

## Attached Properties

- index : int
- isFirstItem : bool
- isLastItem : bool

## Detailed Description

An object of type Positioner is attached to the top-level child item within a Column, Row, Flow or Grid. It provides properties that allow a child item to determine where it exists within the layout of its parent Column, Row, Flow or Grid.

For example, below is a Grid with 16 child rectangles, as created through a Repeater. Each Rectangle displays its index in the Grid using Positioner.index, and the first item is colored differently by taking Positioner.isFirstItem into account:

      Grid {
          Repeater {
              model: 16

              Rectangle {
                  id: rect
                  width: 30; height: 30
                  border.width: 1
                  color: Positioner.isFirstItem ? "yellow" : "lightsteelblue"

                  Text { text: rect.Positioner.index }
              }
          }
      }

## Attached Property Documentation

Positioner.index : int

This property allows the item to determine its index within the positioner.

Positioner.isFirstItem : bool

These properties allow the item to determine if it is the first or last item in the positioner, respectively.

Positioner.isLastItem : bool

These properties allow the item to determine if it is the first or last item in the positioner, respectively.