Scale font size of text to fit into a label with fixed dimensions?

[chris_d_k]

I have 4 labels with have the same dimensions (width="200", maxHeight="100")
and get 4 different texts for the labels.

At least I want that every text fits into the labels dimensions and that all
texts have the same fontSize (the fontsize of the label with most text in
it).

Currently I get the minimim size by testing the maximum fontSize for every
label, compare them and taking the smallest. 

Is there a better way to get the maximum font size which will fit to a label
as below? 

That's my way to get the maximum font size inside the labels parent
component (s:Group):

    // somewhere in updateDisplayList 
    textLabel.setStyle("fontSize", 52);
    while(isResizeNecessary())
    {
        setSmallerFontSizeAndRevalidate();
    }

    // other methods
    private function isResizeNecessary():Boolean
                {
                        var FONT_SIZE_STEPS:int = 2;
                        var isTextLabelToHeight:Boolean = 
textLabel.getPreferredBoundsHeight() >
getMaxHeightForTextLabel();
                        var isTextDownscaleable:Boolean = 
textLabel.getStyle("fontSize") >
FONT_SIZE_STEPS;
                        return isTextLabelToHeight && isTextDownscaleable;
                }

                private function setSmallerFontSizeAndRevalidate():void
                {
                        var FONT_SIZE_STEPS:int = 2;
                        textLabel.setStyle("fontSize", 
textLabel.getStyle("fontSize") -
FONT_SIZE_STEPS);
                        textLabel.invalidateProperties();
                        textLabel.invalidateSize();
                        textLabel.invalidateDisplayList();
                        textLabel.validateNow();
                        invalidateDisplayList();
                }






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