内容

• 特性
• 详细描述

AnchorChanges QML 类型

指定如何按状态改变项锚点。 更多...

• 所有成员列表，包括继承成员

特性

• anchors
  • anchors.baseline : AnchorLine
  • anchors.bottom : AnchorLine
  • anchors.horizontalCenter : AnchorLine
  • anchors.left : AnchorLine
  • anchors.right : AnchorLine
  • anchors.top : AnchorLine
  • anchors.verticalCenter : AnchorLine
• anchors
  • anchors.bottomMargin : real
  • anchors.leftMargin : real
  • anchors.rightMargin : real
  • anchors.topMargin : real
• target : Item

详细描述

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 2.15
Rectangle {
    id: window
    width: 120; height: 120
    color: "black"
    Rectangle { id: anchorRectStart; x: 60; y: 60; height: 60; width: 60; color: "yellow"}
    Rectangle { id: anchorRectEnd; x: 0; y: 0; height: 60; width: 60; color: "blue"}
    Rectangle { id: myRect; color: "red"
        anchors {
            top: anchorRectStart.top
            bottom: anchorRectStart.bottom
            left: anchorRectStart.left
            right: anchorRectStart.right
            topMargin: 10
            bottomMargin: 10
            leftMargin: 10
            rightMargin: 10
        }
    }
    states: State {
        name: "reanchored"
        AnchorChanges {
            target: myRect
            anchors {
                top: anchorRectEnd.top
                bottom: anchorRectEnd.bottom
                left: anchorRectEnd.left
                right: anchorRectEnd.right
                topMargin: 20
                bottomMargin: 20
                leftMargin: 20
                rightMargin: 20
            }
        }
    }
    MouseArea { anchors.fill: parent; onClicked: window.state = "reanchored" }
}
						

Changes to anchor margins can be animated using NumberAnimation .

有关锚点的更多信息，见 锚点布局 .

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