Add canvas.toBlob polyfill

bower.json

@@ -19,7 +19,8 @@
     "indexeddb-backbonejs-adapter": "*",
     "intl-tel-input": "~4.0.1",
     "backbone.typeahead": "mojotech/backbone.typeahead",
-    "blueimp-load-image": "~1.13.0"
+    "blueimp-load-image": "~1.13.0",
+    "blueimp-canvas-to-blob": "~2.1.1"
   },
   "devDependencies": {
     "mocha": "~2.0.1",
@@ -92,6 +93,9 @@
     ],
     "blueimp-load-image": [
       "js/load-image.js"
+    ],
+    "blueimp-canvas-to-blob": [
+      "js/canvas-to-blob.js"
     ]
   },
   "concat": {
@@ -109,7 +113,8 @@
       "momentjs",
       "intl-tel-input",
       "backbone.typeahead",
-      "blueimp-load-image"
+      "blueimp-load-image",
+      "blueimp-canvas-to-blob"
     ],
     "libtextsecure": [
       "jquery",

components/blueimp-canvas-to-blob/js/canvas-to-blob.js

@@ -0,0 +1,95 @@
+/*
+ * JavaScript Canvas to Blob 2.0.5
+ * https://github.com/blueimp/JavaScript-Canvas-to-Blob
+ *
+ * Copyright 2012, Sebastian Tschan
+ * https://blueimp.net
+ *
+ * Licensed under the MIT license:
+ * http://www.opensource.org/licenses/MIT
+ *
+ * Based on stackoverflow user Stoive's code snippet:
+ * http://stackoverflow.com/q/4998908
+ */
+
+/*jslint nomen: true, regexp: true */
+/*global window, atob, Blob, ArrayBuffer, Uint8Array, define */
+
+(function (window) {
+    'use strict';
+    var CanvasPrototype = window.HTMLCanvasElement &&
+            window.HTMLCanvasElement.prototype,
+        hasBlobConstructor = window.Blob && (function () {
+            try {
+                return Boolean(new Blob());
+            } catch (e) {
+                return false;
+            }
+        }()),
+        hasArrayBufferViewSupport = hasBlobConstructor && window.Uint8Array &&
+            (function () {
+                try {
+                    return new Blob([new Uint8Array(100)]).size === 100;
+                } catch (e) {
+                    return false;
+                }
+            }()),
+        BlobBuilder = window.BlobBuilder || window.WebKitBlobBuilder ||
+            window.MozBlobBuilder || window.MSBlobBuilder,
+        dataURLtoBlob = (hasBlobConstructor || BlobBuilder) && window.atob &&
+            window.ArrayBuffer && window.Uint8Array && function (dataURI) {
+                var byteString,
+                    arrayBuffer,
+                    intArray,
+                    i,
+                    mimeString,
+                    bb;
+                if (dataURI.split(',')[0].indexOf('base64') >= 0) {
+                    // Convert base64 to raw binary data held in a string:
+                    byteString = atob(dataURI.split(',')[1]);
+                } else {
+                    // Convert base64/URLEncoded data component to raw binary data:
+                    byteString = decodeURIComponent(dataURI.split(',')[1]);
+                }
+                // Write the bytes of the string to an ArrayBuffer:
+                arrayBuffer = new ArrayBuffer(byteString.length);
+                intArray = new Uint8Array(arrayBuffer);
+                for (i = 0; i < byteString.length; i += 1) {
+                    intArray[i] = byteString.charCodeAt(i);
+                }
+                // Separate out the mime component:
+                mimeString = dataURI.split(',')[0].split(':')[1].split(';')[0];
+                // Write the ArrayBuffer (or ArrayBufferView) to a blob:
+                if (hasBlobConstructor) {
+                    return new Blob(
+                        [hasArrayBufferViewSupport ? intArray : arrayBuffer],
+                        {type: mimeString}
+                    );
+                }
+                bb = new BlobBuilder();
+                bb.append(arrayBuffer);
+                return bb.getBlob(mimeString);
+            };
+    if (window.HTMLCanvasElement && !CanvasPrototype.toBlob) {
+        if (CanvasPrototype.mozGetAsFile) {
+            CanvasPrototype.toBlob = function (callback, type, quality) {
+                if (quality && CanvasPrototype.toDataURL && dataURLtoBlob) {
+                    callback(dataURLtoBlob(this.toDataURL(type, quality)));
+                } else {
+                    callback(this.mozGetAsFile('blob', type));
+                }
+            };
+        } else if (CanvasPrototype.toDataURL && dataURLtoBlob) {
+            CanvasPrototype.toBlob = function (callback, type, quality) {
+                callback(dataURLtoBlob(this.toDataURL(type, quality)));
+            };
+        }
+    }
+    if (typeof define === 'function' && define.amd) {
+        define(function () {
+            return dataURLtoBlob;
+        });
+    } else {
+        window.dataURLtoBlob = dataURLtoBlob;
+    }
+}(this));

js/components.js

@@ -27803,3 +27803,99 @@ JSON.stringify(result);
         $.loadImage = loadImage;
     }
 }(this));
+
+/*
+ * JavaScript Canvas to Blob 2.0.5
+ * https://github.com/blueimp/JavaScript-Canvas-to-Blob
+ *
+ * Copyright 2012, Sebastian Tschan
+ * https://blueimp.net
+ *
+ * Licensed under the MIT license:
+ * http://www.opensource.org/licenses/MIT
+ *
+ * Based on stackoverflow user Stoive's code snippet:
+ * http://stackoverflow.com/q/4998908
+ */
+
+/*jslint nomen: true, regexp: true */
+/*global window, atob, Blob, ArrayBuffer, Uint8Array, define */
+
+(function (window) {
+    'use strict';
+    var CanvasPrototype = window.HTMLCanvasElement &&
+            window.HTMLCanvasElement.prototype,
+        hasBlobConstructor = window.Blob && (function () {
+            try {
+                return Boolean(new Blob());
+            } catch (e) {
+                return false;
+            }
+        }()),
+        hasArrayBufferViewSupport = hasBlobConstructor && window.Uint8Array &&
+            (function () {
+                try {
+                    return new Blob([new Uint8Array(100)]).size === 100;
+                } catch (e) {
+                    return false;
+                }
+            }()),
+        BlobBuilder = window.BlobBuilder || window.WebKitBlobBuilder ||
+            window.MozBlobBuilder || window.MSBlobBuilder,
+        dataURLtoBlob = (hasBlobConstructor || BlobBuilder) && window.atob &&
+            window.ArrayBuffer && window.Uint8Array && function (dataURI) {
+                var byteString,
+                    arrayBuffer,
+                    intArray,
+                    i,
+                    mimeString,
+                    bb;
+                if (dataURI.split(',')[0].indexOf('base64') >= 0) {
+                    // Convert base64 to raw binary data held in a string:
+                    byteString = atob(dataURI.split(',')[1]);
+                } else {
+                    // Convert base64/URLEncoded data component to raw binary data:
+                    byteString = decodeURIComponent(dataURI.split(',')[1]);
+                }
+                // Write the bytes of the string to an ArrayBuffer:
+                arrayBuffer = new ArrayBuffer(byteString.length);
+                intArray = new Uint8Array(arrayBuffer);
+                for (i = 0; i < byteString.length; i += 1) {
+                    intArray[i] = byteString.charCodeAt(i);
+                }
+                // Separate out the mime component:
+                mimeString = dataURI.split(',')[0].split(':')[1].split(';')[0];
+                // Write the ArrayBuffer (or ArrayBufferView) to a blob:
+                if (hasBlobConstructor) {
+                    return new Blob(
+                        [hasArrayBufferViewSupport ? intArray : arrayBuffer],
+                        {type: mimeString}
+                    );
+                }
+                bb = new BlobBuilder();
+                bb.append(arrayBuffer);
+                return bb.getBlob(mimeString);
+            };
+    if (window.HTMLCanvasElement && !CanvasPrototype.toBlob) {
+        if (CanvasPrototype.mozGetAsFile) {
+            CanvasPrototype.toBlob = function (callback, type, quality) {
+                if (quality && CanvasPrototype.toDataURL && dataURLtoBlob) {
+                    callback(dataURLtoBlob(this.toDataURL(type, quality)));
+                } else {
+                    callback(this.mozGetAsFile('blob', type));
+                }
+            };
+        } else if (CanvasPrototype.toDataURL && dataURLtoBlob) {
+            CanvasPrototype.toBlob = function (callback, type, quality) {
+                callback(dataURLtoBlob(this.toDataURL(type, quality)));
+            };
+        }
+    }
+    if (typeof define === 'function' && define.amd) {
+        define(function () {
+            return dataURLtoBlob;
+        });
+    } else {
+        window.dataURLtoBlob = dataURLtoBlob;
+    }
+}(this));