AS3：扩展默认ScrollBar组件
我想调整 Flash ComboBox 内部显示的默认 ScrollBar 的宽度。从我对各种论坛的研究来看，最好的方法似乎是子类化 fl.controls.ScrollBar，我在这里尝试这样做：
package helpers {
import fl.controls.ScrollBar;
public class CustomScroller extends fl.controls.ScrollBar {
public function CustomScroller() {
super();
trace("custom scroller in full effect!");
width = 40;
}
}
}
然后，在我的库中，我拍摄了出现在的“ScrollBar”影片剪辑初始创建 ComboBox 并将基类更改为“helpers.CustomScroller”。我在舞台上有三个 ComboBox 实例；但是，除了默认宽度之外，它们都没有显示任何内容，我也没有看到构造函数中 trace() 语句的输出。
知道为什么这不起作用吗？感谢您的考虑。
I'd like to adjust the width of the default ScrollBar that appears inside of a Flash ComboBox. From my research on various forums, it seems like the best approach would be to subclass fl.controls.ScrollBar, which I've tried doing here:
package helpers {
import fl.controls.ScrollBar;
public class CustomScroller extends fl.controls.ScrollBar {
public function CustomScroller() {
super();
trace("custom scroller in full effect!");
width = 40;
}
}
}
Then, in my library, I've taken the "ScrollBar" movie clip that appears upon initial creation of a ComboBox and changed the base class to "helpers.CustomScroller". I've got three ComboBox instances on the stage; however, none of them are showing anything but the default width, nor am I seeing the output from the trace() statement in my constructor.
Any idea why this isn't working? Thanks for your consideration.
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我只需要这样做一次，不想再这样做了。基本上，为了完成此任务，我需要创建一个名为 fl.controls.WideScrollBar 的 fl.controls.ScrollBar 副本。您还需要修改 fl.containers.BaseScrollPane 和 fl.containers.ScrollPane。
在 WideScrollBar 中，我覆盖了
public static const WIDTH:Number在 WideBaseScrollPane 中，您需要将 _verticalScrollBar 和/或 _horizontalScrollBar 的类更改为 WideScrollBar。然后在我的 WideScrollPane 中，我覆盖了构造函数中对 setStyle 的调用，以指向我的自定义类实例以进行换肤。
I have only had to do this once, and don't want to do it any more. Basically, to accomplish this, I needed to create a copy of fl.controls.ScrollBar called fl.controls.WideScrollBar. You also need to modify fl.containers.BaseScrollPane and fl.containers.ScrollPane.
In WideScrollBar I overrode
public static const WIDTH:NumberIn WideBaseScrollPane you need to change the class of _verticalScrollBar and/or _horizontalScrollBar to be WideScrollBar. Then in my WideScrollPane, I overrode the calls to setStyle in the contructor to point to my custom class instances for skinning.
将滚动窗格作为子级添加到 Sprite，然后缩放该父级 Sprite。滚动条将相应调整。如果 ScrollPane 的源现在太大，则按相同比例因子的倒数进行缩放。
Add the scroll pane as a child to a Sprite, then scale that parent sprite. Scroll bars will adjust accordingly. If source of ScrollPane is now too big, scale by inverse of same scale factor.