Javascript将宽度和高度转换为font-size [英] Javascript convert width and height to font-size
问题描述
我不确定这个问题是否已被提及并回答,但我没有找到任何相关结果。
I'm not sure if this question has already been asked and answered but I haven't found any relevant result.
我想知道是否有可能计算并将特定尺寸(宽度/高度)转换为
a字体大小?
I would like to know if it's possible to calculate and convert specific dimensions (width/height) to a font-size ?
例如,我有:
var textWidth = 150;
var textHeight = 30;
我想从这些尺寸(像素)中获取字体大小?
And I would like to get a font-size from these dimensions (pixels)?
编辑:谢谢破坏,我终于设法在你的帮助下解决了这个问题。
我使用此处发布的功能之后,它并不是很复杂:
EDIT : Thanks dystroy, I finally managed to resolve this issue with your help. I used the function posted here and after that, it was not very complicated :
$(function(){
$( "#height, #width" ).keyup(function(){
var varHeight = $( "#height" ).val();
var varWidth = $( "#width" ).val();
if( varHeight != "" && varWidth != "" ){
$( "#text_container" ).css( "width", varWidth );
$( "#text_container" ).css( "height", varHeight );
$( "#text_container" ).textfill({ maxFontPixels: 500 });
var getFontsize = $( "#text_container > span" ).css( "font-size" );
var fontSize = parseInt( getFontsize.slice(0, -2) );
$( "#fontsize" ).val( fontSize );
}
});
});
再次感谢。
推荐答案
我已经为我所理解的问题制作了一个小界面:你输入一些文本的最大宽度和最大高度,它会自动计算字体的大小以适应文本: http://jsfiddle.net/kPZ3E/
I've made a small interface for what I understand is your question : you input the max width and max height for some text and it automatically computes the size of the font to adapt the text : http://jsfiddle.net/kPZ3E/
HTML:
Max width : <input id=width value=200> px
<br>Max height : <input id=height value=20> px
<br><br>
<table border=1><tr><td id=txtcell nowrap><span id=txt style=>Some sample text.</span></td></tr></table>
<br>Font Size : <span id=mes></span>
JS:
var fontSize = 100;
var reduce = function() {
$('#txt').css('font-size', fontSize);
$('#mes').html(fontSize);
if ($('#txt').width()>$('#width').val() || $('#txt').height()>$('#height').val()) {
fontSize -= 1;
reduce();
}
};
reduce();
$('#width, #height').change(function(){fontSize = 100;reduce()});
注意:小提琴中的超时仅用于显示动画的缩小过程。
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