谁能告诉我为什么我的svg不能下载?我究竟做错了什么?我似乎找不到如何将我的svg下载到png的解决方案。是我的库还是我的代码?
function save(){
$("#editor_save").click(function() {
// the canvg call that takes the svg xml and converts it to a canvas
canvg('canvas', $("#editor").html());
// the canvas calls to output a png
var canvas = document.getElementById("canvas");
var img = canvas.toDataURL("image/png");
// do what you want with the base64, write to screen, post to server, etc...
});
}
<script src="canvg-master/canvg.js"></script>
<div id="editor" class="chart">
<svg width="100" height="100">
<circle cx="50" cy="50" r="40" stroke="green" stroke-width="4" fill="red" />
</svg><br />
<button id="editor_save" onclick="save">Save</button>
</div>
答案 0 :(得分:0)
你有很多问题:
getElementById("canvas")
但是尽管你实际上没有画布元素你问题的标记<br />
和按钮在我更正的代码中,我将画布div显示为可见,因此您可以看到它正常工作。 Te canvas通常是display:none
,你可以用img对象做其他事情。
$("#editor_save").click(function() {
// the canvg call that takes the svg xml and converts it to a canvas
canvg('canvas', $("#svg")[0].outerHTML);
// the canvas calls to output a png
var canvas = document.getElementById("canvas");
var img = canvas.toDataURL("image/png");
// do what you want with the base64, write to screen, post to server, etc...
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="http://canvg.github.io/canvg/rgbcolor.js"></script>
<script src="http://canvg.github.io/canvg/StackBlur.js"></script>
<script src="http://canvg.github.io/canvg/canvg.js"></script>
<div id="editor" class="chart">
<svg id="svg" width="100" height="100">
<circle cx="50" cy="50" r="40" stroke="green" stroke-width="4" fill="red" />
</svg>
<br />
<button id="editor_save">Save</button>
</div>
<div>
<canvas id="canvas" width="1000px" height="600px"></canvas>
</div>