Qt 5.9 | Qt Quick | QML Types | AnchorChanges QML Type

Qt 5.9.9 Reference Documentation

# AnchorChanges QML Type

Specifies how to change the anchors of an item in a state More...

Import Statement: | import QtQuick 2.7

- List of all members, including inherited members

## Properties

- anchors
  - anchors.left : AnchorLine
  - anchors.right : AnchorLine
  - anchors.horizontalCenter : AnchorLine
  - anchors.top : AnchorLine
  - anchors.bottom : AnchorLine
  - anchors.verticalCenter : AnchorLine
  - anchors.baseline : AnchorLine
- target : Item

## Detailed Description

The AnchorChanges type is used to modify the anchors of an item in a State.

AnchorChanges cannot be used to modify the margins on an item. For this, use PropertyChanges intead.

In the following example we change the top and bottom anchors of an item using AnchorChanges, and the top and bottom anchor margins using PropertyChanges:

      import QtQuick 2.0

      Rectangle {
          id: window
          width: 120; height: 120
          color: "black"

          Rectangle { id: myRect; width: 50; height: 50; color: "red" }

          states: State {
              name: "reanchored"

              AnchorChanges {
                  target: myRect
                  anchors.top: window.top
                  anchors.bottom: window.bottom
              }
              PropertyChanges {
                  target: myRect
                  anchors.topMargin: 10
                  anchors.bottomMargin: 10
              }
          }

          MouseArea { anchors.fill: parent; onClicked: window.state = "reanchored" }
      }

AnchorChanges can be animated using AnchorAnimation.

      //animate our anchor changes
      Transition {
          AnchorAnimation {}
      }

Changes to anchor margins can be animated using NumberAnimation.

For more information on anchors see Anchor Layouts.

## Property Documentation

anchors group
anchors.left : AnchorLine
anchors.right : AnchorLine
anchors.horizontalCenter : AnchorLine
anchors.top : AnchorLine
anchors.bottom : AnchorLine
anchors.verticalCenter : AnchorLine
anchors.baseline : AnchorLine

These properties change the respective anchors of the item.

To reset an anchor you can assign `undefined`:

      AnchorChanges {
          target: myItem
          anchors.left: undefined          //remove myItem's left anchor
          anchors.right: otherItem.right
      }

target : Item

This property holds the Item for which the anchor changes will be applied.