我想做的就是将我动态创建的漂亮的SVG图形放入PDF中,目前是通过jsPDF实现。但addSVG无法使用,因此我尝试将它们转换为PNG格式,以便尝试使用addImage代替。
这是在IE11中(客户要求)。
如果我执行以下操作:
var lsvg = d3.select("#nowhere2").node().parentNode.innerHTML;
console.log(lsvg);
可能有三分之一的SVG显示在控制台中。更奇怪的是,它会在东西的正中间截断,所以没有结束标签或其他内容:
<div id="nowhere2"><svg xmlns="http://www.w3.org/2000/svg" width="50px" height="800px"><defs><pattern id="oaghm" patternUnits="userSpaceOnUse" width="30" height="30"><path stroke="#343434" stroke-linecap="square" stroke-width="80" d="M 0 30 l 30 -30 M -7.5 7.5 l 15 -15 M 22.5 37.5 l 15 -15" shape-rendering="auto" /></pattern></defs><rect style="fill: url(#oaghm);" stroke="black" x="10" y="20" width="10" height="10" /><defs><pattern id="zpdff" patternUnits="userSpaceOnUse" width="4" height="4"><path stroke="#343434" stroke-linecap="square" stroke-width="1" d="M 0 4 l 4 -4 M -1 1 l 2 -2 M 3 5 l 2 -2" shape-rendering="auto" /></pattern></defs><rect style="fill: url(#zpdff);" stroke="black" x="10" y="40" width="10" height="10" /><defs><pattern id="dyxwi" patternUnits="userSpaceOnUse" width="10" height="10"><path stroke="#343434" stroke-linecap="square" stroke-width="2" d="M 0 10 l 10 -10 M -2.5 2.5 l 5 -5 M 7.5 12.5 l 5 -5" shape-rendering="auto" /><path stroke="#343434" stroke-linecap="square" stroke-width="2" d
当然,这意味着我的DataURI已经损坏了,尽管Chrome努力尝试(仅用于测试,必须使用IE11):
data:image/svg+xml;base64,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
更奇怪的是,如果我只是将lsvg对象附加回页面,它就可以正常呈现。
var lsvg = d3.select("#nowhere2").node().parentNode.innerHTML;
$("#nowhere").append(lsvg);
如果我在添加后尝试在控制台中检查它,我会得到相同的截断字符串。当然,这让我相信这是一个时间/异步问题,但我已经尝试了我能想到的所有方法来解决这个问题,包括将绘制到画布再保存为PNG函数设置为我的初始SVG绘制函数的回调。每次我都得到相同奇怪的截断字符串。
这是我的画布(由于其他问题而在HTML中声明):
<canvas id="lcanvas" width="50" height="800"></canvas>
研究让我相信可能是画布/ SVG 大小不匹配,但这似乎并非事实(SVG 的一点显示相同的宽度/ 高度,请参见上文)。此外,如果那是真的,它似乎很奇怪,在画布尚未涉及的情况下截断初始字符串赋值。
有一次我得到了完整的 DataURI:
data:image/svg+xml;base64,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
因此,我使用了DataURI进行测试,换句话说,不用担心绘图是否已经完成。 我做了:
limg.src = "data:image/svg+xml;base64,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";
console.log(limg.src);
在控制台中也是一样的。被炸毁。截断。字符串。以下是我的代码:
var lsvg = d3.select("#nowhere2").node().parentNode.innerHTML;
console.log(lsvg);
var limg = new Image;
var lcontext = canl.getContext('2d');
limg.src = 'data:image/svg+xml;base64,' + btoa(lsvg);
console.log(limg.src);
lcontext.load = limg.addEventListener("load", function () {
//console.log(limg.src);
//This fun bit of code brought to you courtesy of IE11.
try {
lcontext.drawImage(limg, 0, 0);
}
catch (err) {
setTimeout(lcontext.drawImage(limg, 0, 0), 0);
};
console.log(canl.toDataURL('image/png'));
});
我把画布保持可见,这样我就可以看到可能发生的问题。它可以很好地从文件中绘制图像。同时,技术上我在这里得到了一个图像,只是它是空的。
我不想从文件中绘制,因为这会污染画布,而且我会收到canl.toDataURL
的安全错误。
我尝试了各种获取lsvg bit
的方式,如XMLSerialize等;但我得到的结果是一个比较短的头部(没有div元素),以及一个比较长的尾部,在确切相同数量的字符之后被截断。通常情况下,在事情的中间部分,仍然没有结束标签,只是一个突然中断的流。
需要明确的是,这不是裁剪后的SVG。这是一个“剪辑”的SVG。起始标记,没有结束标记,除非你使用Chrome并尝试渲染它(IE甚至都不会尝试),否则图像会损坏。在画布涉及之前,SVG已经损坏,甚至在显式赋值之后,与绘图功能无关。
哦,真是太好了,我有一个Fiddle!https://jsfiddle.net/94xhyv6t/在Chrome和IE中尝试并查看控制台。在Chrome中,如果你单击该链接,你会得到一个XML页面,但你可以在那里看到所有的SVG元素,在IE中它被截断。
很高兴知道我不完全疯了。
只是因为我知道有人会提到它,这里有一个没有父DIV节点的例子:https://jsfiddle.net/94xhyv6t/1/同样的问题。
编辑:注意:此Fiddle显示了问题:https://jsfiddle.net/94xhyv6t/1/在Chrome中加载,一切正常。在IE11中加载,一切都被截断了。我消除了所有其他代码,这个Fiddle仅显示了SVG字符串生成组件以及它如何在IE中被截断。我已经尝试过https://jsfiddle.net/94xhyv6t/4/中的XMLSerializer,但是问题依然存在。也许有一种解决方法?
最后的编辑(暂时):控制台只是截断了显示,字符串本身没有问题。接受的答案有一个完整的Fiddle示例,展示了如何将SVG转换为画布,但是你不能在IE11中使用canvas.toDataURL()
,因此这不是一个合适的转换方法。我使用canvg作为一种解决方法。
crossOrigin
属性,这在这里没有用。下面答案中给出的代码在IE9、IE10和IE11上运行良好,但没有在Edge上尝试过。 - Kaiido.toDataURL
操作(向 Microsoft 注意:加油 MS,你们的 Edge 浏览器已经很不错了,但还需要这些微调!)。可能的解决方法(虽然不幸)包括在服务器端构建图表或使用基于 canvas 的图表库。 - markE