Flex/AS3 拖放 - 自定义拖放反馈 [英] Flex/AS3 Drag Drop - Custom Drop Feedback

问题描述

我正在使用 Horizo​​ntalList 组件来显示图像列表，您可以从另一个组件拖动图像加入列表，这一切正常.

I am using a HorizontalList component to display a list of images, you can drag images from another component to join the list, this all works fine.

如果我执行 list.showDropFeedback(event) 我会在 Horizo​​ntalList 中的图像顶部看到一个难看的黑条 - 我真正想要的是一条线到图像的左侧/右侧，新人实际坐在的位置.

If I do list.showDropFeedback(event) I get an unsightly black bar at the top of images in the HorizontalList - what I really want is a line to the left/right of the image, where the new one will actually sit.

我想我需要定义一个自定义 DropFeedback 来覆盖默认值.有谁知道是否有办法实现这一目标?

I guess I need to define a custom DropFeedback to override the default. Does anyone know if there there is a way to achieve this?

谢谢！

推荐答案

你可以通过覆盖 showDropFeedback() 方法来解决它.我的代码如下:

Yuo can sove it by overriding showDropFeedback() method. My code below:

    import mx.controls.HorizontalList;
import mx.controls.listClasses.IListItemRenderer;
import mx.core.mx_internal;
import mx.events.DragEvent;

use namespace mx_internal;

public class HList extends HorizontalList
{
    public function HList()
    {
        super();                        
    }   


        override public function showDropFeedback(event:DragEvent):void
        {

           super.showDropFeedback(event);

            dropIndicator.setActualSize(rowHeight - 4, 4);
            DisplayObject(dropIndicator).rotation = 90;

        }



}

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