Flash AS3：在 X 行处裁剪 TextField 内容，添加 '...'在最后

发布于 2024-08-28 12:46:29 字数 465 浏览 7 评论 0原文

界面中只能容纳三行文本，但内容是外部的且可变的，如果它最终占用超过三行，则需要某种“查看全部”按钮功能。我可以考虑一下该函数需要是什么样子，但我不太确定在 AS3 中实现它的最佳方法是什么。类似于（伪代码）：

function cropText(source:TextField, length:int, append:String):TextField{
    if(source.lineCount > length){
        source.text = // magic function that retuns the first length lines,
        // minus append.length characters, with the append value tacked onto the end
    }
    return source;
}

...对吗？你将如何填补缺失的部分？

原文

There's only room for three lines of text in the interface, but the content is external and variable, and if it ends up taking up more than three lines, there needs to be some sort of 'view all' button functionality. I can kind of think about what that function needs to look like, but I'm not quite sure what the best way to do it in AS3 would be. Something like (in pseudo code):

function cropText(source:TextField, length:int, append:String):TextField{
    if(source.lineCount > length){
        source.text = // magic function that retuns the first length lines,
        // minus append.length characters, with the append value tacked onto the end
    }
    return source;
}

... right? How would you fill in the missing bit?

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ゝ偶尔ゞ 2024-09-04 12:46:29

像...

private function cropText(source:TextField, length:int, append:String):TextField {
    if (source.numLines > length) {
        source.text = source.text.substr(0, source.getLineOffset(length) - append.length) + append;
    }

    return source;
}

Something like...

private function cropText(source:TextField, length:int, append:String):TextField {
    if (source.numLines > length) {
        source.text = source.text.substr(0, source.getLineOffset(length) - append.length) + append;
    }

    return source;
}

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