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56 lines
1.5 KiB
JavaScript
56 lines
1.5 KiB
JavaScript
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var ImageDownloaderPlugin = {
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_ExportImage: function(data, filename, format) {
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var imageData = Pointer_stringify(data);
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var imageFileName = Pointer_stringify(filename);
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var contentType = 'image/'+ format;
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// Converts the image data to binary
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// From http://stackoverflow.com/questions/14967647/
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// encode-decode-image-with-base64-breaks-image (2013-04-21)
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function fixBinary (data) {
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var length = data.length;
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var binary = new ArrayBuffer(length);
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var arr = new Uint8Array(binary);
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for (var i = 0; i < length; i++)
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{
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arr[i] = data.charCodeAt(i);
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}
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return binary;
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}
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var binary = fixBinary(atob(imageData));
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// Creates an image Blob
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var imageBlob = new Blob([binary], {type: contentType});
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// Creates a clickable link that will download the image
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var link = document.createElement('a');
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link.download = imageFileName;
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link.innerHTML = 'DownloadFile';
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link.setAttribute('id', 'ImageDownloaderLink');
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// Creates the click URL
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if(window.webkitURL != null) {
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link.href = window.webkitURL.createObjectURL(imageBlob);
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}
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else {
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link.href = window.URL.createObjectURL(imageBlob);
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// Creates the click function
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link.onclick = function()
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{
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var child = document.getElementById('ImageDownloaderLink');
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child.parentNode.removeChild(child);
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};
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link.style.display = 'none';
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document.body.appendChild(link);
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}
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//Calling the link click action
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link.click();
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}
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};
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mergeInto(LibraryManager.library, ImageDownloaderPlugin); |