Mercurial > hg > orthanc
view OrthancExplorer/libs/jquery-file-upload/js/jquery.fileupload-fp.js @ 1843:d10a8164da5f
ensure images returned to plugins are writable
author | Sebastien Jodogne <s.jodogne@gmail.com> |
---|---|
date | Mon, 30 Nov 2015 13:50:21 +0100 |
parents | 4bc019d2f969 |
children | d86bddb50972 |
line wrap: on
line source
/* * 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 */ /*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'; // The File Upload IP version extends the basic fileupload widget // with file processing functionality: $.widget('blueimpFP.fileupload', $.blueimp.fileupload, { options: { // The list of file processing actions: process: [ /* { action: 'load', fileTypes: /^image\/(gif|jpeg|png)$/, maxFileSize: 20000000 // 20MB }, { action: 'resize', maxWidth: 1920, maxHeight: 1200, minWidth: 800, minHeight: 600 }, { action: 'save' } */ ], // 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(); }); } }, 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(); } }, // 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; }, // 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; }, _create: function () { $.blueimp.fileupload.prototype._create.call(this); this._processing = 0; this._processingQueue = $.Deferred().resolveWith(this) .promise(); } }); }));