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Use Nacl to decode base64 thumbnail data

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This commit is contained in:
ClemDee 2019-08-02 12:21:37 +02:00
parent aae71c43d2
commit 08c006e682
1 changed files with 7 additions and 12 deletions
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19
www/common/common-thumbnail.js
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@ -230,20 +230,15 @@ define([
if (!Visible.currently()) { to = window.setTimeout(interval, Thumb.UPDATE_FIRST); } if (!Visible.currently()) { to = window.setTimeout(interval, Thumb.UPDATE_FIRST); }
}; };
var stringToBlobToUrl = function (b64) {
var byteString = atob(b64.split(',')[1]);
var ab = new ArrayBuffer(byteString.length);
var ia = new Uint8Array(ab);
for (var i = 0; i < byteString.length; i++) {
ia[i] = byteString.charCodeAt(i);
}
var blob = new Blob([ab], {type: "image/png"});
var url = URL.createObjectURL(blob);
return url;
};
var addThumbnail = function (err, thumb, $span, cb) { var addThumbnail = function (err, thumb, $span, cb) {
var u8 = Nacl.util.decodeBase64(thumb.split(',')[1]);
var blob = new Blob([u8], {
type: 'image/png'
});
var url = URL.createObjectURL(blob);
var img = new Image(); var img = new Image();
img.src = stringToBlobToUrl(thumb); img.src = url;
$span.find('.cp-icon').hide(); $span.find('.cp-icon').hide();
$span.prepend(img); $span.prepend(img);
cb($(img)); cb($(img));