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Replaced Image Processing plugin with a more generic File Processing …
…plugin. The File Processing plugin exposes the "process" option, which allows to define a list of process actions to apply to the selected files.
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/* | ||
* jQuery File Upload File Processing Plugin 1.0 | ||
* https://github.com/blueimp/jQuery-File-Upload | ||
* | ||
* Copyright 2012, Sebastian Tschan | ||
* https://blueimp.net | ||
* | ||
* Licensed under the MIT license: | ||
* http://www.opensource.org/licenses/MIT | ||
*/ | ||
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/*jslint nomen: true, unparam: true, regexp: true */ | ||
/*global define, window, document */ | ||
|
||
(function (factory) { | ||
'use strict'; | ||
if (typeof define === 'function' && define.amd) { | ||
// Register as an anonymous AMD module: | ||
define([ | ||
'jquery', | ||
'load-image', | ||
'canvas-to-blob', | ||
'./jquery.fileupload' | ||
], factory); | ||
} else { | ||
// Browser globals: | ||
factory( | ||
window.jQuery, | ||
window.loadImage | ||
); | ||
} | ||
}(function ($, loadImage) { | ||
'use strict'; | ||
|
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// The File Upload IP version extends the basic fileupload widget | ||
// with file processing functionality: | ||
$.widget('blueimpFP.fileupload', $.blueimp.fileupload, { | ||
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options: { | ||
// The list of file processing actions: | ||
process: [ | ||
/* | ||
{ | ||
action: 'load', | ||
fileTypes: /^image\/(gif|jpeg|png)$/, | ||
maxFileSize: 20000000 // 20MB | ||
}, | ||
{ | ||
action: 'resize', | ||
maxWidth: 1920, | ||
maxHeight: 1200, | ||
minWidth: 800, | ||
minHeight: 600 | ||
}, | ||
{ | ||
action: 'save' | ||
} | ||
*/ | ||
], | ||
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// The add callback is invoked as soon as files are added to the | ||
// fileupload widget (via file input selection, drag & drop or add | ||
// API call). See the basic file upload widget for more information: | ||
add: function (e, data) { | ||
$(this).fileupload('process', data).done(function () { | ||
data.submit(); | ||
}); | ||
} | ||
}, | ||
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processActions: { | ||
// Loads the image given via data.files and data.index | ||
// as canvas element. | ||
// Accepts the options fileTypes (regular expression) | ||
// and maxFileSize (integer) to limit the files to load: | ||
load: function (data, options) { | ||
var that = this, | ||
file = data.files[data.index], | ||
dfd = $.Deferred(); | ||
if (window.HTMLCanvasElement && | ||
window.HTMLCanvasElement.prototype.toBlob && | ||
($.type(options.maxFileSize) !== 'number' || | ||
file.size < options.maxFileSize) && | ||
(!options.fileTypes || | ||
options.fileTypes.test(file.type))) { | ||
loadImage( | ||
file, | ||
function (canvas) { | ||
data.canvas = canvas; | ||
dfd.resolveWith(that, [data]); | ||
}, | ||
{canvas: true} | ||
); | ||
} else { | ||
dfd.rejectWith(that, [data]); | ||
} | ||
return dfd.promise(); | ||
}, | ||
// Resizes the image given as data.canvas and updates | ||
// data.canvas with the resized image. | ||
// Accepts the options maxWidth, maxHeight, minWidth and | ||
// minHeight to scale the given image: | ||
resize: function (data, options) { | ||
if (data.canvas) { | ||
var canvas = loadImage.scale(data.canvas, options); | ||
if (canvas.width !== data.canvas.width || | ||
canvas.height !== data.canvas.height) { | ||
data.canvas = canvas; | ||
data.processed = true; | ||
} | ||
} | ||
return data; | ||
}, | ||
// Saves the processed image given as data.canvas | ||
// inplace at data.index of data.files: | ||
save: function (data, options) { | ||
// Do nothing if no processing has happened: | ||
if (!data.canvas || !data.processed) { | ||
return data; | ||
} | ||
var that = this, | ||
file = data.files[data.index], | ||
name = file.name, | ||
dfd = $.Deferred(), | ||
callback = function (blob) { | ||
if (!blob.name) { | ||
if (file.type === blob.type) { | ||
blob.name = file.name; | ||
} else if (file.name) { | ||
blob.name = file.name.replace( | ||
/\..+$/, | ||
'.' + blob.type.substr(6) | ||
); | ||
} | ||
} | ||
// Store the created blob at the position | ||
// of the original file in the files list: | ||
data.files[data.index] = blob; | ||
dfd.resolveWith(that, [data]); | ||
}; | ||
// Use canvas.mozGetAsFile directly, to retain the filename, as | ||
// Gecko doesn't support the filename option for FormData.append: | ||
if (data.canvas.mozGetAsFile) { | ||
callback(data.canvas.mozGetAsFile( | ||
(/^image\/(jpeg|png)$/.test(file.type) && name) || | ||
((name && name.replace(/\..+$/, '')) || | ||
'blob') + '.png', | ||
file.type | ||
)); | ||
} else { | ||
data.canvas.toBlob(callback, file.type); | ||
} | ||
return dfd.promise(); | ||
} | ||
}, | ||
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// Resizes the file at the given index and stores the created blob at | ||
// the original position of the files list, returns a Promise object: | ||
_processFile: function (files, index, options) { | ||
var that = this, | ||
dfd = $.Deferred().resolveWith(that, [{ | ||
files: files, | ||
index: index | ||
}]), | ||
chain = dfd.promise(); | ||
that._processing += 1; | ||
$.each(options.process, function (i, settings) { | ||
chain = chain.pipe(function (data) { | ||
return that.processActions[settings.action] | ||
.call(this, data, settings); | ||
}); | ||
}); | ||
chain.always(function () { | ||
that._processing -= 1; | ||
if (that._processing === 0) { | ||
that.element | ||
.removeClass('fileupload-processing'); | ||
} | ||
}); | ||
if (that._processing === 1) { | ||
that.element.addClass('fileupload-processing'); | ||
} | ||
return chain; | ||
}, | ||
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// Processes the files given as files property of the data parameter, | ||
// returns a Promise object that allows to bind a done handler, which | ||
// will be invoked after processing all files (inplace) is done: | ||
process: function (data) { | ||
var that = this, | ||
options = $.extend({}, this.options, data); | ||
if (options.process && options.process.length && | ||
this._isXHRUpload(options)) { | ||
$.each(data.files, function (index, file) { | ||
that._processingQueue = that._processingQueue.pipe( | ||
function () { | ||
var dfd = $.Deferred(); | ||
that._processFile(data.files, index, options) | ||
.always(function () { | ||
dfd.resolveWith(that); | ||
}); | ||
return dfd.promise(); | ||
} | ||
); | ||
}); | ||
} | ||
return this._processingQueue; | ||
}, | ||
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_create: function () { | ||
$.blueimp.fileupload.prototype._create.call(this); | ||
this._processing = 0; | ||
this._processingQueue = $.Deferred().resolveWith(this) | ||
.promise(); | ||
} | ||
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}); | ||
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})); |
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