组件的 QML 屏幕坐标 [英] QML Screen Coordinates of Component

问题描述

如果我有一个简单的、自包含的 QML 应用程序，我可以通过说得到一个组件的绝对屏幕坐标

If I have a simple, self-contained QML application, I can get the absolute screen coordinates of a component by saying

Component.onCompeted: {    
    var l = myThing.mapToItem(null, 0, 0)
    console.log("X: " + l.x + " y: " + l.y)
}

其中 myThing 是文件中任何其他组件的 ID.但是，如果这个文件被合并到另一个 QML 文件中并且它定义的组件被重用，我就不再获得屏幕坐标；我得到了相对于执行上述语句的组件的局部坐标.

where myThing is the id of any other component in the file. However, if this file gets incorporated into another QML file and the component it defines is reused, I don't get the screen coordinates anymore; I get the local coordinates relative to the component where the statements above are executed.

如何获取项目的绝对屏幕坐标?

How can I get the absolute screen coordinates of items?

推荐答案

Component.onCompleted: {
    var globalCoordinares = myThing.mapToItem(myThing.parent, 0, 0)
    console.log("X: " + globalCoordinares.x + " y: " + globalCoordinares.y)
}

其中 myThing.parent 是您的主要组件.

where myThing.parent is your main compontent.

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