如何使用as3在CSS中动态设置文本大小

Question

我目前正在尝试通过基本字体大小变量全局基于样式表动态设置文本大小。 我目前正在使用方法tfWidthController来检查宽度是否大于所需的宽度，如果要减小宽度来减小css中的字体大小并重新解析css并使其自动调整大小。 但是由于某种原因，它无法自动调整大小，但正在操纵CSS。 你看到我在做什么错吗？ 感谢您抽出宝贵的时间来帮助我！

    package com.intentionally censored.view {
import flash.display.MovieClip;
import flash.text.TextField;
import flash.text.StyleSheet;
import com.intentionally censored.model.MatchupModel;
import com.ff0000.ads.utils.Trace;
import com.google.analytics.debug.Info;

public class MatchupView extends MovieClip {

    // on stage
    public var maxTextFieldWidth = 150;
    public var tf:TextField;
    private var baseFontSize = 10;
    public var $_tfCurrentWidth;

    public function tfWidthController():void {
        $_tfCurrentWidth = tf.textWidth;
        trace('textfields current width is ' + $_tfCurrentWidth);
        trace('textfields max width is ' + maxTextFieldWidth);
        while ($_tfCurrentWidth > maxTextFieldWidth) {
            trace ('$_tfCurrentWidth is '+$_tfCurrentWidth);
            trace ('maxTextFieldWidth is '+maxTextFieldWidth);
            baseFontSize-=1;
            applyStyles();
        }
    }

    private function get styles():StyleSheet {
        var _styles:StyleSheet = new StyleSheet();
        _styles.parseCSS("* {font-family:Playoff Bold Italic;font-style:boldItalic;}.em {font-size:"+(baseFontSize+2)+"px; }.redMicroTxt{font-size:"+baseFontSize+"pt;color:#c00000;}.medWhiteTxt{font-size:"+(baseFontSize+3)+"pt;color:#FFFFFF;}.redMediumTxt{font-size:"+(baseFontSize+6)+"pt;color:#c00000;}.whiteLargeTxt,.whiteMedTxt{font-size:"+(baseFontSize+6)+"pt;color:#FFFFFF;font-style:italic;}");   
        return _styles;
    }

    public function MatchupView() {
        tfWidthController();
        applyStyles();

    }

    protected function applyStyles():void {
        tf.styleSheet = styles;
        tf.autoSize = "center";
    }

    public function prepareFor( $_matchupModel:Object ):void {
        Trace.out( this, 'prepareFor()' );
        var _timeMessage:String = '';
        var _dateMessage:String = 'LIVE NOW'; // -------------- logic for 160 includes "\r"
        trace( $_matchupModel.gameStatus );
        if( $_matchupModel.gameStatus != 'Live Now' ) {             
            _timeMessage = $_matchupModel.timeMessage;
            _dateMessage = 'PM/ET';
        }


        tf.htmlText = '<span class="redMicroTxt">' + $_matchupModel.team1Rank + " "+'</span>'+
                        '<span class="whiteLargeTxt">' + $_matchupModel.team1 + '</span>'+
                        '<span class="medWhiteTxt"> vs </span>'+
                        '<span class="redMicroTxt">' + $_matchupModel.team2Rank + " "+'</span>'+
                        '<span class="whiteLargeTxt">' + $_matchupModel.team2 + '</span> '+
                        '<span class="redMediumTxt">' + _timeMessage +
                        '<span class="redMicroTxt">' + _dateMessage + '</span></span>';
    }

}

}

Answer 1

我想通了-每次调整大小时都需要更改htmlText。

while ($_tfCurrentWidth > maxTextFieldWidth) {
    trace ('$_tfCurrentWidth is '+$_tfCurrentWidth);
    trace ('maxTextFieldWidth is '+maxTextFieldWidth);
    var oldHtml:String = tf.htmlText;
    tf.htmlText = '';
    tf.htmlText = oldHtml;
    baseFontSize-=1;
    applyStyles();
}

我也为此进行了工作测试，您可以在这里看到它： http : //wonderfl.net/c/A310