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| Rev | Author | Line No. | Line |
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| 1 | espaco | 1 | /* |
| 2 | * jQuery File Upload Image Preview & Resize Plugin 1.7.2 |
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| 3 | * https://github.com/blueimp/jQuery-File-Upload |
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| 4 | * |
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| 5 | * Copyright 2013, Sebastian Tschan |
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| 6 | * https://blueimp.net |
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| 7 | * |
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| 8 | * Licensed under the MIT license: |
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| 9 | * http://www.opensource.org/licenses/MIT |
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| 10 | */ |
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| 11 | |||
| 12 | /* jshint nomen:false */ |
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| 13 | /* global define, window, Blob */ |
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| 14 | |||
| 15 | (function (factory) { |
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| 16 | 'use strict'; |
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| 17 | if (typeof define === 'function' && define.amd) { |
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| 18 | // Register as an anonymous AMD module: |
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| 19 | define([ |
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| 20 | 'jquery', |
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| 21 | 'load-image', |
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| 22 | 'load-image-meta', |
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| 23 | 'load-image-exif', |
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| 24 | 'load-image-ios', |
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| 25 | 'canvas-to-blob', |
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| 26 | './jquery.fileupload-process' |
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| 27 | ], factory); |
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| 28 | } else { |
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| 29 | // Browser globals: |
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| 30 | factory( |
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| 31 | window.jQuery, |
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| 32 | window.loadImage |
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| 33 | ); |
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| 34 | } |
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| 35 | }(function ($, loadImage) { |
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| 36 | 'use strict'; |
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| 37 | |||
| 38 | // Prepend to the default processQueue: |
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| 39 | $.blueimp.fileupload.prototype.options.processQueue.unshift( |
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| 40 | { |
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| 41 | action: 'loadImageMetaData', |
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| 42 | disableImageHead: '@', |
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| 43 | disableExif: '@', |
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| 44 | disableExifThumbnail: '@', |
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| 45 | disableExifSub: '@', |
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| 46 | disableExifGps: '@', |
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| 47 | disabled: '@disableImageMetaDataLoad' |
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| 48 | }, |
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| 49 | { |
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| 50 | action: 'loadImage', |
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| 51 | // Use the action as prefix for the "@" options: |
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| 52 | prefix: true, |
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| 53 | fileTypes: '@', |
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| 54 | maxFileSize: '@', |
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| 55 | noRevoke: '@', |
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| 56 | disabled: '@disableImageLoad' |
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| 57 | }, |
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| 58 | { |
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| 59 | action: 'resizeImage', |
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| 60 | // Use "image" as prefix for the "@" options: |
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| 61 | prefix: 'image', |
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| 62 | maxWidth: '@', |
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| 63 | maxHeight: '@', |
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| 64 | minWidth: '@', |
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| 65 | minHeight: '@', |
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| 66 | crop: '@', |
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| 67 | orientation: '@', |
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| 68 | forceResize: '@', |
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| 69 | disabled: '@disableImageResize' |
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| 70 | }, |
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| 71 | { |
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| 72 | action: 'saveImage', |
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| 73 | quality: '@imageQuality', |
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| 74 | type: '@imageType', |
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| 75 | disabled: '@disableImageResize' |
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| 76 | }, |
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| 77 | { |
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| 78 | action: 'saveImageMetaData', |
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| 79 | disabled: '@disableImageMetaDataSave' |
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| 80 | }, |
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| 81 | { |
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| 82 | action: 'resizeImage', |
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| 83 | // Use "preview" as prefix for the "@" options: |
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| 84 | prefix: 'preview', |
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| 85 | maxWidth: '@', |
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| 86 | maxHeight: '@', |
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| 87 | minWidth: '@', |
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| 88 | minHeight: '@', |
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| 89 | crop: '@', |
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| 90 | orientation: '@', |
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| 91 | thumbnail: '@', |
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| 92 | canvas: '@', |
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| 93 | disabled: '@disableImagePreview' |
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| 94 | }, |
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| 95 | { |
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| 96 | action: 'setImage', |
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| 97 | name: '@imagePreviewName', |
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| 98 | disabled: '@disableImagePreview' |
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| 99 | }, |
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| 100 | { |
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| 101 | action: 'deleteImageReferences', |
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| 102 | disabled: '@disableImageReferencesDeletion' |
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| 103 | } |
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| 104 | ); |
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| 105 | |||
| 106 | // The File Upload Resize plugin extends the fileupload widget |
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| 107 | // with image resize functionality: |
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| 108 | $.widget('blueimp.fileupload', $.blueimp.fileupload, { |
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| 109 | |||
| 110 | options: { |
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| 111 | // The regular expression for the types of images to load: |
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| 112 | // matched against the file type: |
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| 113 | loadImageFileTypes: /^image\/(gif|jpeg|png|svg\+xml)$/, |
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| 114 | // The maximum file size of images to load: |
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| 115 | loadImageMaxFileSize: 10000000, // 10MB |
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| 116 | // The maximum width of resized images: |
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| 117 | imageMaxWidth: 1920, |
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| 118 | // The maximum height of resized images: |
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| 119 | imageMaxHeight: 1080, |
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| 120 | // Defines the image orientation (1-8) or takes the orientation |
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| 121 | // value from Exif data if set to true: |
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| 122 | imageOrientation: false, |
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| 123 | // Define if resized images should be cropped or only scaled: |
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| 124 | imageCrop: false, |
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| 125 | // Disable the resize image functionality by default: |
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| 126 | disableImageResize: true, |
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| 127 | // The maximum width of the preview images: |
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| 128 | previewMaxWidth: 80, |
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| 129 | // The maximum height of the preview images: |
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| 130 | previewMaxHeight: 80, |
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| 131 | // Defines the preview orientation (1-8) or takes the orientation |
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| 132 | // value from Exif data if set to true: |
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| 133 | previewOrientation: true, |
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| 134 | // Create the preview using the Exif data thumbnail: |
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| 135 | previewThumbnail: true, |
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| 136 | // Define if preview images should be cropped or only scaled: |
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| 137 | previewCrop: false, |
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| 138 | // Define if preview images should be resized as canvas elements: |
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| 139 | previewCanvas: true |
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| 140 | }, |
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| 141 | |||
| 142 | processActions: { |
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| 143 | |||
| 144 | // Loads the image given via data.files and data.index |
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| 145 | // as img element, if the browser supports the File API. |
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| 146 | // Accepts the options fileTypes (regular expression) |
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| 147 | // and maxFileSize (integer) to limit the files to load: |
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| 148 | loadImage: function (data, options) { |
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| 149 | if (options.disabled) { |
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| 150 | return data; |
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| 151 | } |
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| 152 | var that = this, |
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| 153 | file = data.files[data.index], |
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| 154 | dfd = $.Deferred(); |
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| 155 | if (($.type(options.maxFileSize) === 'number' && |
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| 156 | file.size > options.maxFileSize) || |
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| 157 | (options.fileTypes && |
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| 158 | !options.fileTypes.test(file.type)) || |
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| 159 | !loadImage( |
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| 160 | file, |
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| 161 | function (img) { |
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| 162 | if (img.src) { |
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| 163 | data.img = img; |
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| 164 | } |
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| 165 | dfd.resolveWith(that, [data]); |
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| 166 | }, |
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| 167 | options |
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| 168 | )) { |
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| 169 | return data; |
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| 170 | } |
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| 171 | return dfd.promise(); |
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| 172 | }, |
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| 173 | |||
| 174 | // Resizes the image given as data.canvas or data.img |
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| 175 | // and updates data.canvas or data.img with the resized image. |
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| 176 | // Also stores the resized image as preview property. |
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| 177 | // Accepts the options maxWidth, maxHeight, minWidth, |
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| 178 | // minHeight, canvas and crop: |
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| 179 | resizeImage: function (data, options) { |
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| 180 | if (options.disabled || !(data.canvas || data.img)) { |
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| 181 | return data; |
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| 182 | } |
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| 183 | options = $.extend({canvas: true}, options); |
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| 184 | var that = this, |
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| 185 | dfd = $.Deferred(), |
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| 186 | img = (options.canvas && data.canvas) || data.img, |
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| 187 | resolve = function (newImg) { |
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| 188 | if (newImg && (newImg.width !== img.width || |
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| 189 | newImg.height !== img.height || |
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| 190 | options.forceResize)) { |
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| 191 | data[newImg.getContext ? 'canvas' : 'img'] = newImg; |
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| 192 | } |
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| 193 | data.preview = newImg; |
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| 194 | dfd.resolveWith(that, [data]); |
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| 195 | }, |
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| 196 | thumbnail; |
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| 197 | if (data.exif) { |
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| 198 | if (options.orientation === true) { |
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| 199 | options.orientation = data.exif.get('Orientation'); |
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| 200 | } |
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| 201 | if (options.thumbnail) { |
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| 202 | thumbnail = data.exif.get('Thumbnail'); |
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| 203 | if (thumbnail) { |
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| 204 | loadImage(thumbnail, resolve, options); |
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| 205 | return dfd.promise(); |
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| 206 | } |
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| 207 | } |
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| 208 | // Prevent orienting the same image twice: |
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| 209 | if (data.orientation) { |
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| 210 | delete options.orientation; |
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| 211 | } else { |
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| 212 | data.orientation = options.orientation; |
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| 213 | } |
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| 214 | } |
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| 215 | if (img) { |
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| 216 | resolve(loadImage.scale(img, options)); |
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| 217 | return dfd.promise(); |
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| 218 | } |
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| 219 | return data; |
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| 220 | }, |
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| 221 | |||
| 222 | // Saves the processed image given as data.canvas |
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| 223 | // inplace at data.index of data.files: |
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| 224 | saveImage: function (data, options) { |
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| 225 | if (!data.canvas || options.disabled) { |
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| 226 | return data; |
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| 227 | } |
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| 228 | var that = this, |
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| 229 | file = data.files[data.index], |
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| 230 | dfd = $.Deferred(); |
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| 231 | if (data.canvas.toBlob) { |
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| 232 | data.canvas.toBlob( |
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| 233 | function (blob) { |
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| 234 | if (!blob.name) { |
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| 235 | if (file.type === blob.type) { |
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| 236 | blob.name = file.name; |
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| 237 | } else if (file.name) { |
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| 238 | blob.name = file.name.replace( |
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| 239 | /\..+$/, |
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| 240 | '.' + blob.type.substr(6) |
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| 241 | ); |
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| 242 | } |
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| 243 | } |
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| 244 | // Don't restore invalid meta data: |
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| 245 | if (file.type !== blob.type) { |
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| 246 | delete data.imageHead; |
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| 247 | } |
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| 248 | // Store the created blob at the position |
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| 249 | // of the original file in the files list: |
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| 250 | data.files[data.index] = blob; |
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| 251 | dfd.resolveWith(that, [data]); |
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| 252 | }, |
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| 253 | options.type || file.type, |
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| 254 | options.quality |
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| 255 | ); |
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| 256 | } else { |
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| 257 | return data; |
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| 258 | } |
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| 259 | return dfd.promise(); |
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| 260 | }, |
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| 261 | |||
| 262 | loadImageMetaData: function (data, options) { |
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| 263 | if (options.disabled) { |
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| 264 | return data; |
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| 265 | } |
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| 266 | var that = this, |
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| 267 | dfd = $.Deferred(); |
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| 268 | loadImage.parseMetaData(data.files[data.index], function (result) { |
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| 269 | $.extend(data, result); |
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| 270 | dfd.resolveWith(that, [data]); |
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| 271 | }, options); |
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| 272 | return dfd.promise(); |
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| 273 | }, |
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| 274 | |||
| 275 | saveImageMetaData: function (data, options) { |
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| 276 | if (!(data.imageHead && data.canvas && |
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| 277 | data.canvas.toBlob && !options.disabled)) { |
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| 278 | return data; |
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| 279 | } |
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| 280 | var file = data.files[data.index], |
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| 281 | blob = new Blob([ |
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| 282 | data.imageHead, |
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| 283 | // Resized images always have a head size of 20 bytes, |
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| 284 | // including the JPEG marker and a minimal JFIF header: |
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| 285 | this._blobSlice.call(file, 20) |
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| 286 | ], {type: file.type}); |
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| 287 | blob.name = file.name; |
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| 288 | data.files[data.index] = blob; |
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| 289 | return data; |
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| 290 | }, |
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| 291 | |||
| 292 | // Sets the resized version of the image as a property of the |
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| 293 | // file object, must be called after "saveImage": |
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| 294 | setImage: function (data, options) { |
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| 295 | if (data.preview && !options.disabled) { |
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| 296 | data.files[data.index][options.name || 'preview'] = data.preview; |
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| 297 | } |
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| 298 | return data; |
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| 299 | }, |
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| 300 | |||
| 301 | deleteImageReferences: function (data, options) { |
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| 302 | if (!options.disabled) { |
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| 303 | delete data.img; |
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| 304 | delete data.canvas; |
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| 305 | delete data.preview; |
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| 306 | delete data.imageHead; |
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| 307 | } |
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| 308 | return data; |
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| 309 | } |
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| 310 | |||
| 311 | } |
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| 312 | |||
| 313 | }); |
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| 314 | |||
| 315 | })); |