Question

我做了大量的研究,阅读了Adobe活的Docs 直到我眼睛流血想弄清楚为止。

我正在ActionScript中构建一个复合自定义组件, 并希望横向设置子控件。将其添加到 < code> HGroup 中, 并在组件中添加 HGroup, 这样效果很好, 问题与百分比缩放有关。

我需要来根据集装箱的大小自行大小大小大小。

跳过代码显示每个UIComponent 的父属性是...

_horizontalGroup.parent = ReportGridSelector
ReportGridSelector.parent = grpControls

如果重力控制器有明确的尺寸, 报告GridSector 是否也应该有它的大小?

The custom component is implemented like this...
NOTE: ReportControl extends UIComponent and contains no sizing logic

public class ReportGridSelector extends ReportControl{

  /*other display objects*/
  private var _horizontalGroup:HGroup;

    public function ReportGridSelector(){
        super();
        percentHeight = 100;
        percentWidth = 100;
    }

    override protected function createChildren():void{

        super.createChildren();

        if(!_horizontalGroup){
            _horizontalGroup = new HGroup();

            //I WANT SIZE BY PERCENTAGE, BUT THIS DOESN T WORK
            _horizontalGroup.percentWidth = 100;
            _horizontalGroup.percentHeight = 100;

            //EXPLICITLY SETTING THEM WORKS, BUT IS STATIC :-(
            //_horizontalGroup.width = 200;
            //_horizontalGroup.height = 200;
            addChild(_horizontalGroup);
        }
    }
}

消耗 MXMML 代码

<?xml version="1.0" encoding="utf-8"?> 
<s:VGroup id="grpControls" width="200" height="200">
     <ReportControls:ReportGridSelector width="100%" height="100%"/>
</s:VGroup>

如果我明确地定义了 s width > 和 hiight 属性,那么一切都会好起来。如果我尝试 holizoltalgroup.perpercentWidth 或 %H8 ,所有控件都会被拼凑在一起。

有什么想法吗?

Answer 1

更新 DisplayList 时显示列表无效时执行布局。

override protected function updateDisplayList(unscaledWidth:Number, unscaledHeight:Number):void
{
    super.updateDisplayList(unscaledWidth, unscaledHeight);

    _horizontalGroup.width = unscaledWidth;
    _horizontalGroup.height = unscaledHeight;
}

理解弹性成分的生命周期:

http://lievocs.adobe.com/flex/3/html/help.html?content=as subjects_advanced_2.html

< 强度 > 创建儿童 < /强 >

Creates any child components of the component. For example, the ComboBox control contains a TextInput control and a Button control as child components.

更多信息,请参见《实施创建儿童()方法》。

< 坚固> 更新DisplayList

Sizes and positions the children of the component on the screen based on all previous property and style settings, and draws any skins or graphic elements used by the component. The parent container for the component determines the size of the component itself.

友情链接