diff options
Diffstat (limited to 'library/jqupload/js/jquery.fileupload-image.js')
| -rw-r--r-- | library/jqupload/js/jquery.fileupload-image.js | 309 |
1 files changed, 309 insertions, 0 deletions
diff --git a/library/jqupload/js/jquery.fileupload-image.js b/library/jqupload/js/jquery.fileupload-image.js new file mode 100644 index 000000000..8fbf7d42c --- /dev/null +++ b/library/jqupload/js/jquery.fileupload-image.js @@ -0,0 +1,309 @@ +/* + * jQuery File Upload Image Preview & Resize Plugin 1.7.0 + * https://github.com/blueimp/jQuery-File-Upload + * + * Copyright 2013, Sebastian Tschan + * https://blueimp.net + * + * Licensed under the MIT license: + * http://www.opensource.org/licenses/MIT + */ + +/* jshint nomen:false */ +/* global define, window, Blob */ + +(function (factory) { + 'use strict'; + if (typeof define === 'function' && define.amd) { + // Register as an anonymous AMD module: + define([ + 'jquery', + 'load-image', + 'load-image-meta', + 'load-image-exif', + 'load-image-ios', + 'canvas-to-blob', + './jquery.fileupload-process' + ], factory); + } else { + // Browser globals: + factory( + window.jQuery, + window.loadImage + ); + } +}(function ($, loadImage) { + 'use strict'; + + // Prepend to the default processQueue: + $.blueimp.fileupload.prototype.options.processQueue.unshift( + { + action: 'loadImageMetaData', + disableImageHead: '@', + disableExif: '@', + disableExifThumbnail: '@', + disableExifSub: '@', + disableExifGps: '@', + disabled: '@disableImageMetaDataLoad' + }, + { + action: 'loadImage', + // Use the action as prefix for the "@" options: + prefix: true, + fileTypes: '@', + maxFileSize: '@', + noRevoke: '@', + disabled: '@disableImageLoad' + }, + { + action: 'resizeImage', + // Use "image" as prefix for the "@" options: + prefix: 'image', + maxWidth: '@', + maxHeight: '@', + minWidth: '@', + minHeight: '@', + crop: '@', + orientation: '@', + forceResize: '@', + disabled: '@disableImageResize' + }, + { + action: 'saveImage', + quality: '@imageQuality', + type: '@imageType', + disabled: '@disableImageResize' + }, + { + action: 'saveImageMetaData', + disabled: '@disableImageMetaDataSave' + }, + { + action: 'resizeImage', + // Use "preview" as prefix for the "@" options: + prefix: 'preview', + maxWidth: '@', + maxHeight: '@', + minWidth: '@', + minHeight: '@', + crop: '@', + orientation: '@', + thumbnail: '@', + canvas: '@', + disabled: '@disableImagePreview' + }, + { + action: 'setImage', + name: '@imagePreviewName', + disabled: '@disableImagePreview' + }, + { + action: 'deleteImageReferences', + disabled: '@disableImageReferencesDeletion' + } + ); + + // The File Upload Resize plugin extends the fileupload widget + // with image resize functionality: + $.widget('blueimp.fileupload', $.blueimp.fileupload, { + + options: { + // The regular expression for the types of images to load: + // matched against the file type: + loadImageFileTypes: /^image\/(gif|jpeg|png)$/, + // The maximum file size of images to load: + loadImageMaxFileSize: 10000000, // 10MB + // The maximum width of resized images: + imageMaxWidth: 1920, + // The maximum height of resized images: + imageMaxHeight: 1080, + // Defines the image orientation (1-8) or takes the orientation + // value from Exif data if set to true: + imageOrientation: false, + // Define if resized images should be cropped or only scaled: + imageCrop: false, + // Disable the resize image functionality by default: + disableImageResize: true, + // The maximum width of the preview images: + previewMaxWidth: 80, + // The maximum height of the preview images: + previewMaxHeight: 80, + // Defines the preview orientation (1-8) or takes the orientation + // value from Exif data if set to true: + previewOrientation: true, + // Create the preview using the Exif data thumbnail: + previewThumbnail: true, + // Define if preview images should be cropped or only scaled: + previewCrop: false, + // Define if preview images should be resized as canvas elements: + previewCanvas: true + }, + + processActions: { + + // Loads the image given via data.files and data.index + // as img element, if the browser supports the File API. + // Accepts the options fileTypes (regular expression) + // and maxFileSize (integer) to limit the files to load: + loadImage: function (data, options) { + if (options.disabled) { + return data; + } + var that = this, + file = data.files[data.index], + dfd = $.Deferred(); + if (($.type(options.maxFileSize) === 'number' && + file.size > options.maxFileSize) || + (options.fileTypes && + !options.fileTypes.test(file.type)) || + !loadImage( + file, + function (img) { + if (img.src) { + data.img = img; + } + dfd.resolveWith(that, [data]); + }, + options + )) { + return data; + } + return dfd.promise(); + }, + + // Resizes the image given as data.canvas or data.img + // and updates data.canvas or data.img with the resized image. + // Also stores the resized image as preview property. + // Accepts the options maxWidth, maxHeight, minWidth, + // minHeight, canvas and crop: + resizeImage: function (data, options) { + if (options.disabled || !(data.canvas || data.img)) { + return data; + } + options = $.extend({canvas: true}, options); + var that = this, + dfd = $.Deferred(), + img = (options.canvas && data.canvas) || data.img, + resolve = function (newImg) { + if (newImg && (newImg.width !== img.width || + newImg.height !== img.height || + options.forceResize)) { + data[newImg.getContext ? 'canvas' : 'img'] = newImg; + } + data.preview = newImg; + dfd.resolveWith(that, [data]); + }, + thumbnail; + if (data.exif) { + if (options.orientation === true) { + options.orientation = data.exif.get('Orientation'); + } + if (options.thumbnail) { + thumbnail = data.exif.get('Thumbnail'); + if (thumbnail) { + loadImage(thumbnail, resolve, options); + return dfd.promise(); + } + } + } + if (img) { + resolve(loadImage.scale(img, options)); + return dfd.promise(); + } + return data; + }, + + // Saves the processed image given as data.canvas + // inplace at data.index of data.files: + saveImage: function (data, options) { + if (!data.canvas || options.disabled) { + return data; + } + var that = this, + file = data.files[data.index], + dfd = $.Deferred(); + if (data.canvas.toBlob) { + data.canvas.toBlob( + function (blob) { + if (!blob.name) { + if (file.type === blob.type) { + blob.name = file.name; + } else if (file.name) { + blob.name = file.name.replace( + /\..+$/, + '.' + blob.type.substr(6) + ); + } + } + // Don't restore invalid meta data: + if (file.type !== blob.type) { + delete data.imageHead; + } + // Store the created blob at the position + // of the original file in the files list: + data.files[data.index] = blob; + dfd.resolveWith(that, [data]); + }, + options.type || file.type, + options.quality + ); + } else { + return data; + } + return dfd.promise(); + }, + + loadImageMetaData: function (data, options) { + if (options.disabled) { + return data; + } + var that = this, + dfd = $.Deferred(); + loadImage.parseMetaData(data.files[data.index], function (result) { + $.extend(data, result); + dfd.resolveWith(that, [data]); + }, options); + return dfd.promise(); + }, + + saveImageMetaData: function (data, options) { + if (!(data.imageHead && data.canvas && + data.canvas.toBlob && !options.disabled)) { + return data; + } + var file = data.files[data.index], + blob = new Blob([ + data.imageHead, + // Resized images always have a head size of 20 bytes, + // including the JPEG marker and a minimal JFIF header: + this._blobSlice.call(file, 20) + ], {type: file.type}); + blob.name = file.name; + data.files[data.index] = blob; + return data; + }, + + // Sets the resized version of the image as a property of the + // file object, must be called after "saveImage": + setImage: function (data, options) { + if (data.preview && !options.disabled) { + data.files[data.index][options.name || 'preview'] = data.preview; + } + return data; + }, + + deleteImageReferences: function (data, options) { + if (!options.disabled) { + delete data.img; + delete data.canvas; + delete data.preview; + delete data.imageHead; + } + return data; + } + + } + + }); + +})); |