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make it minification friendly #31

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271 changes: 133 additions & 138 deletions public/javascripts/imageupload.js
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Original file line number Diff line number Diff line change
@@ -1,138 +1,133 @@
angular.module('imageupload', [])
.directive('image', function($q) {
'use strict'

var URL = window.URL || window.webkitURL;

var getResizeArea = function () {
var resizeAreaId = 'fileupload-resize-area';

var resizeArea = document.getElementById(resizeAreaId);

if (!resizeArea) {
resizeArea = document.createElement('canvas');
resizeArea.id = resizeAreaId;
resizeArea.style.visibility = 'hidden';
document.body.appendChild(resizeArea);
}

return resizeArea;
}

var resizeImage = function (origImage, options) {
var maxHeight = options.resizeMaxHeight || 300;
var maxWidth = options.resizeMaxWidth || 250;
var quality = options.resizeQuality || 0.7;
var type = options.resizeType || 'image/jpg';

var canvas = getResizeArea();

var height = origImage.height;
var width = origImage.width;

// calculate the width and height, constraining the proportions
if (width > height) {
if (width > maxWidth) {
height = Math.round(height *= maxWidth / width);
width = maxWidth;
}
} else {
if (height > maxHeight) {
width = Math.round(width *= maxHeight / height);
height = maxHeight;
}
}

canvas.width = width;
canvas.height = height;

//draw image on canvas
var ctx = canvas.getContext("2d");
ctx.drawImage(origImage, 0, 0, width, height);

// get the data from canvas as 70% jpg (or specified type).
return canvas.toDataURL(type, quality);
};

var createImage = function(url, callback) {
var image = new Image();
image.onload = function() {
callback(image);
};
image.src = url;
};

var fileToDataURL = function (file) {
var deferred = $q.defer();
var reader = new FileReader();
reader.onload = function (e) {
deferred.resolve(e.target.result);
};
reader.readAsDataURL(file);
return deferred.promise;
};


return {
restrict: 'A',
scope: {
image: '=',
resizeMaxHeight: '@?',
resizeMaxWidth: '@?',
resizeQuality: '@?',
resizeType: '@?',
},
link: function postLink(scope, element, attrs, ctrl) {

var doResizing = function(imageResult, callback) {
createImage(imageResult.url, function(image) {
var dataURL = resizeImage(image, scope);
imageResult.resized = {
dataURL: dataURL,
type: dataURL.match(/:(.+\/.+);/)[1],
};
callback(imageResult);
});
};

var applyScope = function(imageResult) {
scope.$apply(function() {
//console.log(imageResult);
if(attrs.multiple)
scope.image.push(imageResult);
else
scope.image = imageResult;
});
};


element.bind('change', function (evt) {
//when multiple always return an array of images
if(attrs.multiple)
scope.image = [];

var files = evt.target.files;
for(var i = 0; i < files.length; i++) {
//create a result object for each file in files
var imageResult = {
file: files[i],
url: URL.createObjectURL(files[i])
};

fileToDataURL(files[i]).then(function (dataURL) {
imageResult.dataURL = dataURL;
});

if(scope.resizeMaxHeight || scope.resizeMaxWidth) { //resize image
doResizing(imageResult, function(imageResult) {
applyScope(imageResult);
});
}
else { //no resizing
applyScope(imageResult);
}
}
});
}
};
});
'use strict'

function ImageUpload($q) {

var URL = window.URL || window.webkitURL;

var getResizeArea = function() {
var resizeAreaId = 'fileupload-resize-area';

var resizeArea = document.getElementById(resizeAreaId);

if (!resizeArea) {
resizeArea = document.createElement('canvas');
resizeArea.id = resizeAreaId;
resizeArea.style.visibility = 'hidden';
document.body.appendChild(resizeArea);
}

return resizeArea;
}

var resizeImage = function(origImage, options) {
var maxHeight = options.resizeMaxHeight || 300;
var maxWidth = options.resizeMaxWidth || 250;
var quality = options.resizeQuality || 0.7;
var type = options.resizeType || 'image/jpg';

var canvas = getResizeArea();

var height = origImage.height;
var width = origImage.width;

// calculate the width and height, constraining the proportions
if (width > height) {
if (width > maxWidth) {
height = Math.round(height *= maxWidth / width);
width = maxWidth;
}
} else {
if (height > maxHeight) {
width = Math.round(width *= maxHeight / height);
height = maxHeight;
}
}

canvas.width = width;
canvas.height = height;

// draw image on canvas
var ctx = canvas.getContext("2d");
ctx.drawImage(origImage, 0, 0, width, height);

// get the data from canvas as 70% jpg (or specified type).
return canvas.toDataURL(type, quality);
};

var createImage = function(url, callback) {
var image = new Image();
image.onload = function() {
callback(image);
};
image.src = url;
};

var fileToDataURL = function(file) {
var deferred = $q.defer();
var reader = new FileReader();
reader.onload = function(e) {
deferred.resolve(e.target.result);
};
reader.readAsDataURL(file);
return deferred.promise;
};

return {
restrict : 'A',
scope : {
image : '=',
resizeMaxHeight : '@?',
resizeMaxWidth : '@?',
resizeQuality : '@?',
resizeType : '@?', },
link : function postLink(scope, element, attrs, ctrl) {

var doResizing = function(imageResult, callback) {
createImage(imageResult.url, function(image) {
var dataURL = resizeImage(image, scope);
imageResult.resized = {
dataURL : dataURL,
type : dataURL.match(/:(.+\/.+);/)[1], };
callback(imageResult);
});
};

var applyScope = function(imageResult) {
scope.$apply(function() {
// console.log(imageResult);
if (attrs.multiple)
scope.image.push(imageResult);
else
scope.image = imageResult;
});
};

element.bind('change', function(evt) {
// when multiple always return an array of images
if (attrs.multiple)
scope.image = [];

var files = evt.target.files;
for (var i = 0; i < files.length; i++) {
// create a result object for each file in files
var imageResult = {
file : files[i],
url : URL.createObjectURL(files[i]) };

fileToDataURL(files[i]).then(function(dataURL) {
imageResult.dataURL = dataURL;
});

if (scope.resizeMaxHeight || scope.resizeMaxWidth) { // resize
// image
doResizing(imageResult, function(imageResult) {
applyScope(imageResult);
});
} else { // no resizing
applyScope(imageResult);
}
}
});
} };
}
angular.module('imageupload', []).directive('image', [ '$q', ImageUpload ]);