如何将样式应用于嵌入式 SVG? [英] How to apply a style to an embedded SVG?
问题描述
当使用 <svg> 标签将 SVG 直接包含在文档中时，您可以通过文档的样式表将 CSS 样式应用到 SVG.但是，我正在尝试将样式应用于嵌入的 SVG(使用 <object> 标签).
When an SVG is directly included in a document using the <svg> tag, you can apply CSS styles to the SVG via the document's stylesheet. However, I am trying to apply a style to an SVG which is embedded (using the <object> tag).
是否可以使用诸如以下代码之类的任何东西?
Is it possible to use anything such as the following code?
object svg {
fill: #fff;
}
推荐答案
简短回答:不，因为样式不能跨文档边界应用.
Short answer: no, since styles don't apply across document boundaries.
但是，由于您有一个 标签，您可以使用脚本将样式表插入到 svg 文档中.
However, since you have an <object> tag you can insert the stylesheet into the svg document using script.
类似这样的事情，请注意，此代码假定 已完全加载:
Something like this, and note that this code assumes that the <object> has loaded fully:
var svgDoc = yourObjectElement.contentDocument;
var styleElement = svgDoc.createElementNS("http://www.w3.org/2000/svg", "style");
styleElement.textContent = "svg { fill: #fff }"; // add whatever you need here
svgDoc.getElementById("where-to-insert").appendChild(styleElement);
也可以插入 元素来引用外部样式表:
It's also possible to insert a <link> element to reference an external stylesheet:
var svgDoc = yourObjectElement.contentDocument;
var linkElm = svgDoc.createElementNS("http://www.w3.org/1999/xhtml", "link");
linkElm.setAttribute("href", "my-style.css");
linkElm.setAttribute("type", "text/css");
linkElm.setAttribute("rel", "stylesheet");
svgDoc.getElementById("where-to-insert").appendChild(linkElm);
另一种选择是使用第一种方法，插入一个样式元素，然后添加一个@import 规则，例如 styleElement.textContent = "@import url(my-style.css)".
Yet another option is to use the first method, to insert a style element, and then add an @import rule, e.g styleElement.textContent = "@import url(my-style.css)".
当然，您也可以直接从 svg 文件链接到样式表，而无需编写任何脚本.以下任何一项都应该有效:
Of course you can directly link to the stylesheet from the svg file too, without doing any scripting. Either of the following should work:
<?xml version="1.0" encoding="UTF-8"?>
<?xml-stylesheet href="my-style.css" type="text/css"?>
<svg xmlns="http://www.w3.org/2000/svg">
... rest of document here ...
</svg>
或:
<svg xmlns="http://www.w3.org/2000/svg">
<defs>
<link href="my-style.css" type="text/css" rel="stylesheet"
xmlns="http://www.w3.org/1999/xhtml"/>
</defs>
... rest of document here ...
</svg>
2015 年更新:您可以使用 jquery-svg 插件来应用 js 脚本和 css 样式到嵌入式 SVG.
Update 2015: you can use jquery-svg plugin for apply js scripts and css styles to an embedded SVG.
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