如果您设置在Stage.scaleMode为StageScaleMode.SHOW_ALL，您的SWF可以放大或缩小，并且可以填充在顶部/底部或左/右。但是，您的SWF定义stage.width +高度总是返回的宽度和高度，以及stage.scaleX + Y始终返回1。据我了解，调整大小事件不会引发。那么，如何得到实际的规模和尺寸？

我想他们两个问题：

我要填补顶部/底部的填充或左/右的东西，只有当用户能看到它。

我绘制矢量成位图，并希望适当扩大它，所以它看起来并不锯齿（或模糊时将Bitmap.smoothi​​ng）。闪光似乎做正确的比例，当您将cacheAsBitmap = true时，让我怎么重建呢？

在你的情况下，它可能会更容易使用StageScaleMode.NO_SCALE且为code中的调整自己：

  stage.addEventListener（Event.RESIZE，onStageResize）;
私有函数onStageResize（事件：事件）：无效
    {
    VAR stageW：INT = stage.stageWidth;
    VAR stageH：INT = stage.stageHeight;

    VAR contentW：INT = yourVisibleContent.width;
    VAR contentH：INT = yourVisibleContent.height;

    //调整其大小，以适应
    VAR canvasAspectRatio：数= stageW / stageH;
    VAR contentAspectRatio：数= contentW / contentH;
    如果（canvasAspectRatio＆GT; contentAspectRatio）
    {
        yourVisibleContent.height = stageH;
        yourVisibleContent.width = yourVisibleContent.height * contentAspectRatio;
    } 其他 {

        yourVisibleContent.width = stageW;
        yourVisibleContent.height = yourVisibleContent.width / contentAspectRatio;
    }

    //中心吧：
    yourVisibleContent.x =（stageW  -  yourVisibleContent.width）/ 2;
    yourVisibleContent.y =（stageH  -  yourVisibleContent.height）/ 2;

    //填充剩余空间以黑色：
    graphics.beginFill（0x000000处）;
    如果（canvasAspectRatio＆GT; contentAspectRatio）
    {
        VAR horizo​​ntalEmptySpace：数= stageW  -  yourVisibleContent.width;
        graphics.drawRect（0，0，horizo​​ntalEmptySpace / 2，stageH）;
        graphics.drawRect（stageW  -  horizo​​ntalEmptySpace / 2，0，horizo​​ntalEmptySpace / 2，stageH）;
    }其他{
        VAR verticalEmptySpace：数= stageH  -  yourVisibleContent.height;
        graphics.drawRect（0，0，stageW，verticalEmptySpace / 2）;
        graphics.drawRect（0，stageH  -  verticalEmptySpace / 2，stageW，verticalEmptySpace / 2）;
    }

    //现在你也可以重新绘制的位图分辨率更高
    //很容易阅读你的内容与规模：yourVisibleContent.scaleX和yourVisibleContent.scaleY
}
 

If you set the stage.scaleMode to StageScaleMode.SHOW_ALL, your swf may be scaled up or down, and may be padded on the top/bottom or left/right. However, stage.width + height always return the width and height as defined by your swf, and stage.scaleX + Y always return 1. As I understand it, resize events are not thrown. So how do I get the actual scale and dimensions?

I want them for two problems:

I want to fill that padding on the top/bottom or left/right with something only if the user can see it.

I am drawing vectors into bitmaps and want to properly scale it so it doesn't look jagged (or fuzzy with bitmap.smoothing). Flash seems to do the scaling correctly when you cacheAsBitmap=true, so how do I recreate this?

In your case it would probably be easier to use StageScaleMode.NO_SCALE and to code the resizing yourself:

stage.addEventListener(Event.RESIZE, onStageResize);
private function onStageResize(event : Event) : void 
    {
    var stageW : int = stage.stageWidth;
    var stageH : int = stage.stageHeight;

    var contentW : int = yourVisibleContent.width;
    var contentH : int = yourVisibleContent.height;

    // resize it to fit
    var canvasAspectRatio : Number = stageW / stageH;
    var contentAspectRatio : Number = contentW / contentH;
    if(canvasAspectRatio > contentAspectRatio)
    {
        yourVisibleContent.height = stageH;
        yourVisibleContent.width = yourVisibleContent.height * contentAspectRatio;
    } else {

        yourVisibleContent.width = stageW;
        yourVisibleContent.height = yourVisibleContent.width / contentAspectRatio;
    }

    // center it:
    yourVisibleContent.x = (stageW - yourVisibleContent.width) / 2;
    yourVisibleContent.y = (stageH - yourVisibleContent.height) / 2;

    // fill remaining space with black:
    graphics.beginFill(0x000000);
    if(canvasAspectRatio > contentAspectRatio)
    {
        var horizontalEmptySpace : Number = stageW - yourVisibleContent.width;
        graphics.drawRect(0, 0, horizontalEmptySpace / 2, stageH);
        graphics.drawRect(stageW - horizontalEmptySpace / 2, 0, horizontalEmptySpace / 2, stageH);
    }else{
        var verticalEmptySpace : Number = stageH - yourVisibleContent.height;
        graphics.drawRect(0, 0, stageW, verticalEmptySpace / 2);
        graphics.drawRect(0, stageH - verticalEmptySpace / 2, stageW, verticalEmptySpace / 2);
    }

    // now you can also redraw your bitmaps with higher resolutions
    // it is easy to read the scale of your content with: yourVisibleContent.scaleX and yourVisibleContent.scaleY
}