CODEWITHSUNDEEP
javascriptjquery
Atul Prajapati
Atul Prajapati

Reputation: 177

Not able to save SVG containing text and image to Canvas

I am drawing the text in SVG on an image based on user input in text box.
I want to capture both image and text of SVG to canvas so that
i can convert it to base 64 string after showing it on canvas. I am able to capture the text in canvas but image is not showing.

<body>
  <svg id="svgelem" class="scaling-svg" xmlns="http://www.w3.org/2000/svg">
    <g>
      <image xlink:href="http://i.imgur.com/PWSOy.jpg" x="0" y="0" height="200" width="200" />
      <text x="38%" y="68%" alignment-baseline="middle" text-anchor="middle" font-family="Calibri" font-size="25" id="textbox" fill="black"></text>
    </g>
  </svg>
  <input type="text" name="name" id="name" maxlength="26" />
  <input type="submit" id="drawText" value="Draw It" />

  <div style="clear:both;"></div>
  <br/>
  <canvas id="canvas" style="border:2px solid black;" width="250" height="250">
  </canvas>
</body>

Have a look at jsfiddle

Here's a link
https://jsfiddle.net/atulpr/0yhpygue/14/

Upvotes: 1

Views: 157

Answers (1)

szym
szym

Reputation: 5846

This is the same problem as in: Render SVG with external references to Canvas

You need to embed the image with data URI rather than using external URL.

function embedImage(imageElement) {
  var image = new Image();
  image.setAttribute('crossOrigin', 'anonymous');
  image.src = imageElement.getAttribute('xlink:href');
  image.onload = function() {
    var canvas = document.createElement('canvas');
    canvas.width = image.width;
    canvas.height = image.height;
    canvas.getContext('2d').drawImage(image, 0, 0);
    imageElement.setAttribute('xlink:href', canvas.toDataURL('image/png'));
  }
}

https://jsfiddle.net/0yhpygue/15/

Upvotes: 1

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