908 lines
32 KiB
JavaScript
908 lines
32 KiB
JavaScript
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/*
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Copyright (c) 2009, Yahoo! Inc. All rights reserved.
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Code licensed under the BSD License:
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http://developer.yahoo.net/yui/license.txt
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version: 2.7.0
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*/
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/**
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* @description <p>Creates a Image Cropper control.</p>
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* @namespace YAHOO.widget
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* @requires yahoo, dom, dragdrop, element, event, resize
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* @module imagecropper
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* @beta
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*/
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(function() {
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var Dom = YAHOO.util.Dom,
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Event = YAHOO.util.Event,
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Lang = YAHOO.lang;
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/**
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* @constructor
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* @class ImageCropper
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* @description <p>Creates a Image Cropper control.</p>
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* @extends YAHOO.util.Element
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* @param {String/HTMLElement} el The image element to make croppable.
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* @param {Object} attrs Object liternal containing configuration parameters.
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*/
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var Crop = function(el, config) {
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YAHOO.log('Initializing', 'log', 'ImageCropper');
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var oConfig = {
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element: el,
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attributes: config || {}
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};
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Crop.superclass.constructor.call(this, oConfig.element, oConfig.attributes);
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};
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/**
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* @private
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* @static
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* @property _instances
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* @description Internal hash table for all ImageCropper instances
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* @type Object
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*/
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Crop._instances = {};
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/**
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* @static
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* @method getCropperById
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* @description Get's an ImageCropper object by the HTML id of the image associated with the ImageCropper object.
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* @return {Object} The ImageCropper Object
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*/
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Crop.getCropperById = function(id) {
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if (Crop._instances[id]) {
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return Crop._instances[id];
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}
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return false;
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};
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YAHOO.extend(Crop, YAHOO.util.Element, {
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/**
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* @private
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* @property CSS_MAIN
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* @description The CSS class used to wrap the element
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* @type String
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*/
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CSS_MAIN: 'yui-crop',
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/**
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* @private
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* @property CSS_MASK
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* @description The CSS class for the mask element
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* @type String
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*/
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CSS_MASK: 'yui-crop-mask',
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/**
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* @private
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* @property CSS_RESIZE_MASK
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* @description The CSS class for the mask inside the resize element
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* @type String
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*/
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CSS_RESIZE_MASK: 'yui-crop-resize-mask',
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/**
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* @private
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* @property _image
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* @description The url of the image we are cropping
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* @type String
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*/
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_image: null,
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/**
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* @private
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* @property _active
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* @description Flag to determine if the crop region is active
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* @type Boolean
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*/
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_active: null,
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/**
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* @private
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* @property _resize
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* @description A reference to the Resize Utility used in this Cropper Instance
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* @type Object
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*/
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_resize: null,
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/**
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* @private
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* @property _resizeEl
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* @description The HTML Element used to create the Resize Oject
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* @type HTMLElement
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*/
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_resizeEl: null,
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/**
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* @private
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* @property _resizeMaskEl
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* @description The HTML Element used to create the Resize mask
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* @type HTMLElement
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*/
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_resizeMaskEl: null,
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/**
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* @private
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* @property _wrap
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* @description The HTML Element created to wrap the image
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* @type HTMLElement
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*/
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_wrap: null,
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/**
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* @private
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* @property _mask
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* @description The HTML Element created to "mask" the image being cropped
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* @type HTMLElement
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*/
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_mask: null,
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/**
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* @private
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* @method _createWrap
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* @description Creates the wrapper element used to wrap the image
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*/
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_createWrap: function() {
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YAHOO.log('Creating the wrap element', 'log', 'ImageCropper');
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this._wrap = document.createElement('div');
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this._wrap.id = this.get('element').id + '_wrap';
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this._wrap.className = this.CSS_MAIN;
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var el = this.get('element');
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this._wrap.style.width = el.width ? el.width + 'px' : Dom.getStyle(el, 'width');
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this._wrap.style.height = el.height ? el.height + 'px' : Dom.getStyle(el, 'height');
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var par = this.get('element').parentNode;
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par.replaceChild(this._wrap, this.get('element'));
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this._wrap.appendChild(this.get('element'));
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Event.on(this._wrap, 'mouseover', this._handleMouseOver, this, true);
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Event.on(this._wrap, 'mouseout', this._handleMouseOut, this, true);
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Event.on(this._wrap, 'click', function(ev) { Event.stopEvent(ev); }, this, true);
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},
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/**
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* @private
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* @method _createMask
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* @description Creates the mask element used to mask the image
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*/
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_createMask: function() {
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YAHOO.log('Creating the Mask', 'log', 'ImageCropper');
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this._mask = document.createElement('div');
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this._mask.className = this.CSS_MASK;
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this._wrap.appendChild(this._mask);
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},
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/**
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* @private
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* @method _createResize
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* @description Creates the resize element and the instance of the Resize Utility
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*/
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_createResize: function() {
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YAHOO.log('Creating the Resize element', 'log', 'ImageCropper');
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this._resizeEl = document.createElement('div');
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this._resizeEl.className = YAHOO.util.Resize.prototype.CSS_RESIZE;
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this._resizeEl.style.position = 'absolute';
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this._resizeEl.innerHTML = '<div class="' + this.CSS_RESIZE_MASK + '"></div>';
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this._resizeMaskEl = this._resizeEl.firstChild;
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this._wrap.appendChild(this._resizeEl);
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this._resizeEl.style.top = this.get('initialXY')[1] + 'px';
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this._resizeEl.style.left = this.get('initialXY')[0] + 'px';
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this._resizeMaskEl.style.height = Math.floor(this.get('initHeight')) + 'px';
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this._resizeMaskEl.style.width = Math.floor(this.get('initWidth')) + 'px';
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this._resize = new YAHOO.util.Resize(this._resizeEl, {
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knobHandles: true,
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handles: 'all',
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draggable: true,
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status: this.get('status'),
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minWidth: this.get('minWidth'),
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minHeight: this.get('minHeight'),
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ratio: this.get('ratio'),
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autoRatio: this.get('autoRatio'),
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height: this.get('initHeight'),
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width: this.get('initWidth')
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});
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this._setBackgroundImage(this.get('element').getAttribute('src', 2));
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this._setBackgroundPosition(-(this.get('initialXY')[0]), -(this.get('initialXY')[1]));
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this._resize.on('startResize', this._handleStartResizeEvent, this, true);
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this._resize.on('endResize', this._handleEndResizeEvent, this, true);
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this._resize.on('dragEvent', this._handleDragEvent, this, true);
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this._resize.on('beforeResize', this._handleBeforeResizeEvent, this, true);
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this._resize.on('resize', this._handleResizeEvent, this, true);
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this._resize.dd.on('b4StartDragEvent', this._handleB4DragEvent, this, true);
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},
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/**
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* @private
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* @method _handleMouseOver
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* @description Handles the mouseover event
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*/
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_handleMouseOver: function(ev) {
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var evType = 'keydown';
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if (YAHOO.env.ua.gecko || YAHOO.env.ua.opera) {
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evType = 'keypress';
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}
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if (!this._active) {
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this._active = true;
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if (this.get('useKeys')) {
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Event.on(document, evType, this._handleKeyPress, this, true);
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}
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}
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},
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/**
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* @private
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* @method _handleMouseOut
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* @description Handles the mouseout event
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*/
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_handleMouseOut: function(ev) {
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var evType = 'keydown';
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if (YAHOO.env.ua.gecko || YAHOO.env.ua.opera) {
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evType = 'keypress';
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}
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this._active = false;
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if (this.get('useKeys')) {
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Event.removeListener(document, evType, this._handleKeyPress);
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}
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},
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/**
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* @private
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* @method _moveEl
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* @description Moves the resize element based on the arrow keys
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*/
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_moveEl: function(dir, inc) {
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YAHOO.log('Moving the element', 'log', 'ImageCropper');
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var t = 0, l = 0,
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region = this._setConstraints(),
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resize = true;
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switch (dir) {
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case 'down':
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t = -(inc);
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if ((region.bottom - inc) < 0) {
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resize = false;
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this._resizeEl.style.top = (region.top + region.bottom) + 'px';
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}
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break;
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case 'up':
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t = (inc);
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if ((region.top - inc) < 0) {
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resize = false;
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this._resizeEl.style.top = '0px';
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}
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break;
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case 'right':
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l = -(inc);
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if ((region.right - inc) < 0) {
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resize = false;
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this._resizeEl.style.left = (region.left + region.right) + 'px';
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}
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break;
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case 'left':
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l = inc;
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if ((region.left - inc) < 0) {
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resize = false;
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this._resizeEl.style.left = '0px';
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}
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break;
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}
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if (resize) {
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YAHOO.log('Moving via Key Listener: ' + dir, 'log', 'ImageCropper');
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this._resizeEl.style.left = (parseInt(this._resizeEl.style.left, 10) - l) + 'px';
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this._resizeEl.style.top = (parseInt(this._resizeEl.style.top, 10) - t) + 'px';
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this.fireEvent('moveEvent', { target: 'keypress' });
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} else {
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this._setConstraints();
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}
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this._syncBackgroundPosition();
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},
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/**
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* @private
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* @method _handleKeyPress
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* @description Handles the keypress event
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*/
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_handleKeyPress: function(ev) {
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var kc = Event.getCharCode(ev),
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stopEvent = false,
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inc = ((ev.shiftKey) ? this.get('shiftKeyTick') : this.get('keyTick'));
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switch (kc) {
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case 0x25: // left
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this._moveEl('left', inc);
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stopEvent = true;
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break;
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case 0x26: // up
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this._moveEl('up', inc);
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stopEvent = true;
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break;
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case 0x27: // right
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this._moveEl('right', inc);
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stopEvent = true;
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break;
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case 0x28: // down
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this._moveEl('down', inc);
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stopEvent = true;
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break;
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default:
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}
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if (stopEvent) {
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Event.preventDefault(ev);
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}
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},
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/**
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* @private
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* @method _handleB4DragEvent
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* @description Handles the DragDrop b4DragEvent event
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*/
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_handleB4DragEvent: function() {
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this._setConstraints();
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},
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/**
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* @private
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* @method _handleDragEvent
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* @description Handles the DragDrop DragEvent event
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*/
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_handleDragEvent: function() {
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this._syncBackgroundPosition();
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this.fireEvent('dragEvent', arguments);
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this.fireEvent('moveEvent', { target: 'dragevent' });
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},
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/**
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* @private
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* @method _handleBeforeResizeEvent
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* @description Handles the Resize Utilitys beforeResize event
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*/
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_handleBeforeResizeEvent: function(args) {
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var region = Dom.getRegion(this.get('element')),
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c = this._resize._cache,
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ch = this._resize._currentHandle, h = 0, w = 0;
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if (args.top && (args.top < region.top)) {
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h = (c.height + c.top) - region.top;
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Dom.setY(this._resize.getWrapEl(), region.top);
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this._resize.getWrapEl().style.height = h + 'px';
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this._resize._cache.height = h;
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this._resize._cache.top = region.top;
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this._syncBackgroundPosition();
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return false;
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}
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if (args.left && (args.left < region.left)) {
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w = (c.width + c.left) - region.left;
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Dom.setX(this._resize.getWrapEl(), region.left);
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this._resize._cache.left = region.left;
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this._resize.getWrapEl().style.width = w + 'px';
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this._resize._cache.width = w;
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this._syncBackgroundPosition();
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return false;
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}
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if (ch != 'tl' && ch != 'l' && ch != 'bl') {
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if (c.left && args.width && ((c.left + args.width) > region.right)) {
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w = (region.right - c.left);
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|
|
Dom.setX(this._resize.getWrapEl(), (region.right - w));
|
||
|
|
this._resize.getWrapEl().style.width = w + 'px';
|
||
|
|
this._resize._cache.left = (region.right - w);
|
||
|
|
this._resize._cache.width = w;
|
||
|
|
this._syncBackgroundPosition();
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if (ch != 't' && ch != 'tr' && ch != 'tl') {
|
||
|
|
if (c.top && args.height && ((c.top + args.height) > region.bottom)) {
|
||
|
|
h = (region.bottom - c.top);
|
||
|
|
Dom.setY(this._resize.getWrapEl(), (region.bottom - h));
|
||
|
|
this._resize.getWrapEl().style.height = h + 'px';
|
||
|
|
this._resize._cache.height = h;
|
||
|
|
this._resize._cache.top = (region.bottom - h);
|
||
|
|
this._syncBackgroundPosition();
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
},
|
||
|
|
/**
|
||
|
|
* @private
|
||
|
|
* @method _handleResizeMaskEl
|
||
|
|
* @description Resizes the inner mask element
|
||
|
|
*/
|
||
|
|
_handleResizeMaskEl: function() {
|
||
|
|
var a = this._resize._cache;
|
||
|
|
this._resizeMaskEl.style.height = Math.floor(a.height) + 'px';
|
||
|
|
this._resizeMaskEl.style.width = Math.floor(a.width) + 'px';
|
||
|
|
},
|
||
|
|
/**
|
||
|
|
* @private
|
||
|
|
* @method _handleResizeEvent
|
||
|
|
* @param Event ev The Resize Utilitys resize event.
|
||
|
|
* @description Handles the Resize Utilitys Resize event
|
||
|
|
*/
|
||
|
|
_handleResizeEvent: function(ev) {
|
||
|
|
this._setConstraints(true);
|
||
|
|
this._syncBackgroundPosition();
|
||
|
|
this.fireEvent('resizeEvent', arguments);
|
||
|
|
this.fireEvent('moveEvent', { target: 'resizeevent' });
|
||
|
|
},
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @private
|
||
|
|
* @method _syncBackgroundPosition
|
||
|
|
* @description Syncs the packground position of the resize element with the resize elements top and left style position
|
||
|
|
*/
|
||
|
|
_syncBackgroundPosition: function() {
|
||
|
|
this._handleResizeMaskEl();
|
||
|
|
this._setBackgroundPosition(-(parseInt(this._resizeEl.style.left, 10)), -(parseInt(this._resizeEl.style.top, 10)));
|
||
|
|
},
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @private
|
||
|
|
* @method _setBackgroundPosition
|
||
|
|
* @param Number l The left position
|
||
|
|
* @param Number t The top position
|
||
|
|
* @description Sets the background image position to the top and left position
|
||
|
|
*/
|
||
|
|
_setBackgroundPosition: function(l, t) {
|
||
|
|
//YAHOO.log('Setting the image background position of the mask to: (' + l + ', ' + t + ')', 'log', 'ImageCropper');
|
||
|
|
var bl = parseInt(Dom.getStyle(this._resize.get('element'), 'borderLeftWidth'), 10);
|
||
|
|
var bt = parseInt(Dom.getStyle(this._resize.get('element'), 'borderTopWidth'), 10);
|
||
|
|
if (isNaN(bl)) {
|
||
|
|
bl = 0;
|
||
|
|
}
|
||
|
|
if (isNaN(bt)) {
|
||
|
|
bt = 0;
|
||
|
|
}
|
||
|
|
var mask = this._resize.getWrapEl().firstChild;
|
||
|
|
var pos = (l - bl) + 'px ' + (t - bt) + 'px';
|
||
|
|
this._resizeMaskEl.style.backgroundPosition = pos;
|
||
|
|
},
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @private
|
||
|
|
* @method _setBackgroundImage
|
||
|
|
* @param String url The url of the image
|
||
|
|
* @description Sets the background image of the resize element
|
||
|
|
*/
|
||
|
|
_setBackgroundImage: function(url) {
|
||
|
|
YAHOO.log('Setting the background image', 'log', 'ImageCropper');
|
||
|
|
var mask = this._resize.getWrapEl().firstChild;
|
||
|
|
this._image = url;
|
||
|
|
mask.style.backgroundImage = 'url(' + url + '#)';
|
||
|
|
},
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @private
|
||
|
|
* @method _handleEndResizeEvent
|
||
|
|
* @description Handles the Resize Utilitys endResize event
|
||
|
|
*/
|
||
|
|
_handleEndResizeEvent: function() {
|
||
|
|
this._setConstraints(true);
|
||
|
|
},
|
||
|
|
/**
|
||
|
|
* @private
|
||
|
|
* @method _handleStartResizeEvent
|
||
|
|
* @description Handles the Resize Utilitys startResize event
|
||
|
|
*/
|
||
|
|
_handleStartResizeEvent: function() {
|
||
|
|
this._setConstraints(true);
|
||
|
|
|
||
|
|
var h = this._resize._cache.height,
|
||
|
|
w = this._resize._cache.width,
|
||
|
|
t = parseInt(this._resize.getWrapEl().style.top, 10),
|
||
|
|
l = parseInt(this._resize.getWrapEl().style.left, 10),
|
||
|
|
maxH = 0, maxW = 0;
|
||
|
|
|
||
|
|
switch (this._resize._currentHandle) {
|
||
|
|
case 'b':
|
||
|
|
maxH = (h + this._resize.dd.bottomConstraint);
|
||
|
|
break;
|
||
|
|
case 'l':
|
||
|
|
maxW = (w + this._resize.dd.leftConstraint);
|
||
|
|
break;
|
||
|
|
case 'r':
|
||
|
|
maxH = (h + t);
|
||
|
|
maxW = (w + this._resize.dd.rightConstraint);
|
||
|
|
break;
|
||
|
|
case 'br':
|
||
|
|
maxH = (h + this._resize.dd.bottomConstraint);
|
||
|
|
maxW = (w + this._resize.dd.rightConstraint);
|
||
|
|
break;
|
||
|
|
case 'tr':
|
||
|
|
maxH = (h + t);
|
||
|
|
maxW = (w + this._resize.dd.rightConstraint);
|
||
|
|
break;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
if (maxH) {
|
||
|
|
YAHOO.log('Setting the maxHeight on the resize object to: ' + maxH, 'log', 'ImageCropper');
|
||
|
|
//this._resize.set('maxHeight', maxH);
|
||
|
|
}
|
||
|
|
if (maxW) {
|
||
|
|
YAHOO.log('Setting the maxWidth on the resize object to: ' + maxW, 'log', 'ImageCropper');
|
||
|
|
//this._resize.set('maxWidth', maxW);
|
||
|
|
}
|
||
|
|
|
||
|
|
this.fireEvent('startResizeEvent', arguments);
|
||
|
|
},
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @private
|
||
|
|
* @method _setConstraints
|
||
|
|
* @param Boolean inside Used when called from inside a resize event, false by default (dragging)
|
||
|
|
* @description Set the DragDrop constraints to keep the element inside the crop area.
|
||
|
|
* @return {Object} Object containing Top, Right, Bottom and Left constraints
|
||
|
|
*/
|
||
|
|
_setConstraints: function(inside) {
|
||
|
|
YAHOO.log('Setting Contraints', 'log', 'ImageCropper');
|
||
|
|
var resize = this._resize;
|
||
|
|
resize.dd.resetConstraints();
|
||
|
|
var height = parseInt(resize.get('height'), 10),
|
||
|
|
width = parseInt(resize.get('width'), 10);
|
||
|
|
if (inside) {
|
||
|
|
//Called from inside the resize callback
|
||
|
|
height = resize._cache.height;
|
||
|
|
width = resize._cache.width;
|
||
|
|
}
|
||
|
|
|
||
|
|
//Get the top, right, bottom and left positions
|
||
|
|
var region = Dom.getRegion(this.get('element'));
|
||
|
|
//Get the element we are working on
|
||
|
|
var el = resize.getWrapEl();
|
||
|
|
|
||
|
|
//Get the xy position of it
|
||
|
|
var xy = Dom.getXY(el);
|
||
|
|
|
||
|
|
//Set left to x minus left
|
||
|
|
var left = xy[0] - region.left;
|
||
|
|
|
||
|
|
//Set right to right minus x minus width
|
||
|
|
var right = region.right - xy[0] - width;
|
||
|
|
|
||
|
|
//Set top to y minus top
|
||
|
|
var top = xy[1] - region.top;
|
||
|
|
|
||
|
|
//Set bottom to bottom minus y minus height
|
||
|
|
var bottom = region.bottom - xy[1] - height;
|
||
|
|
|
||
|
|
if (top < 0) {
|
||
|
|
top = 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
resize.dd.setXConstraint(left, right);
|
||
|
|
resize.dd.setYConstraint(top, bottom);
|
||
|
|
YAHOO.log('Constraints: ' + top + ',' + right + ',' + bottom + ',' + left, 'log', 'ImageCropper');
|
||
|
|
|
||
|
|
return {
|
||
|
|
top: top,
|
||
|
|
right: right,
|
||
|
|
bottom: bottom,
|
||
|
|
left: left
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
},
|
||
|
|
/**
|
||
|
|
* @method getCropCoords
|
||
|
|
* @description Returns the coordinates needed to crop the image
|
||
|
|
* @return {Object} The top, left, height, width and image url of the image being cropped
|
||
|
|
*/
|
||
|
|
getCropCoords: function() {
|
||
|
|
var coords = {
|
||
|
|
top: parseInt(this._resize.getWrapEl().style.top, 10),
|
||
|
|
left: parseInt(this._resize.getWrapEl().style.left, 10),
|
||
|
|
height: this._resize._cache.height,
|
||
|
|
width: this._resize._cache.width,
|
||
|
|
image: this._image
|
||
|
|
};
|
||
|
|
YAHOO.log('Getting the crop coordinates: ' + Lang.dump(coords), 'log', 'ImageCropper');
|
||
|
|
return coords;
|
||
|
|
},
|
||
|
|
/**
|
||
|
|
* @method reset
|
||
|
|
* @description Resets the crop element back to it's original position
|
||
|
|
* @return {<a href="YAHOO.widget.ImageCropper.html">YAHOO.widget.ImageCropper</a>} The ImageCropper instance
|
||
|
|
*/
|
||
|
|
reset: function() {
|
||
|
|
YAHOO.log('Resetting the control', 'log', 'ImageCropper');
|
||
|
|
this._resize.resize(null, this.get('initHeight'), this.get('initWidth'), 0, 0, true);
|
||
|
|
this._resizeEl.style.top = this.get('initialXY')[1] + 'px';
|
||
|
|
this._resizeEl.style.left = this.get('initialXY')[0] + 'px';
|
||
|
|
this._syncBackgroundPosition();
|
||
|
|
return this;
|
||
|
|
},
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @method getEl
|
||
|
|
* @description Get the HTML reference for the image element.
|
||
|
|
* @return {HTMLElement} The image element
|
||
|
|
*/
|
||
|
|
getEl: function() {
|
||
|
|
return this.get('element');
|
||
|
|
},
|
||
|
|
/**
|
||
|
|
* @method getResizeEl
|
||
|
|
* @description Get the HTML reference for the resize element.
|
||
|
|
* @return {HTMLElement} The resize element
|
||
|
|
*/
|
||
|
|
getResizeEl: function() {
|
||
|
|
return this._resizeEl;
|
||
|
|
},
|
||
|
|
/**
|
||
|
|
* @method getWrapEl
|
||
|
|
* @description Get the HTML reference for the wrap element.
|
||
|
|
* @return {HTMLElement} The wrap element
|
||
|
|
*/
|
||
|
|
getWrapEl: function() {
|
||
|
|
return this._wrap;
|
||
|
|
},
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @method getMaskEl
|
||
|
|
* @description Get the HTML reference for the mask element.
|
||
|
|
* @return {HTMLElement} The mask element
|
||
|
|
*/
|
||
|
|
getMaskEl: function() {
|
||
|
|
return this._mask;
|
||
|
|
},
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @method getResizeMaskEl
|
||
|
|
* @description Get the HTML reference for the resizable object's mask element.
|
||
|
|
* @return {HTMLElement} The resize objects mask element.
|
||
|
|
*/
|
||
|
|
getResizeMaskEl: function() {
|
||
|
|
return this._resizeMaskEl;
|
||
|
|
},
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @method getResizeObject
|
||
|
|
* @description Get the Resize Utility object.
|
||
|
|
* @return {<a href="YAHOO.util.Resize.html">YAHOO.util.Resize</a>} The Resize instance
|
||
|
|
*/
|
||
|
|
getResizeObject: function() {
|
||
|
|
return this._resize;
|
||
|
|
},
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @private
|
||
|
|
* @method init
|
||
|
|
* @description The ImageCropper class's initialization method
|
||
|
|
*/
|
||
|
|
init: function(p_oElement, p_oAttributes) {
|
||
|
|
YAHOO.log('init', 'info', 'ImageCropper');
|
||
|
|
Crop.superclass.init.call(this, p_oElement, p_oAttributes);
|
||
|
|
|
||
|
|
var id = p_oElement;
|
||
|
|
|
||
|
|
if (!Lang.isString(id)) {
|
||
|
|
if (id.tagName && (id.tagName.toLowerCase() == 'img')) {
|
||
|
|
id = Dom.generateId(id);
|
||
|
|
} else {
|
||
|
|
YAHOO.log('Element is not an image.', 'error', 'ImageCropper');
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
var el = Dom.get(id);
|
||
|
|
if (el.tagName && el.tagName.toLowerCase() == 'img') {
|
||
|
|
//All good
|
||
|
|
} else {
|
||
|
|
YAHOO.log('Element is not an image.', 'error', 'ImageCropper');
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
Crop._instances[id] = this;
|
||
|
|
this._createWrap();
|
||
|
|
this._createMask();
|
||
|
|
this._createResize();
|
||
|
|
this._setConstraints();
|
||
|
|
|
||
|
|
},
|
||
|
|
/**
|
||
|
|
* @private
|
||
|
|
* @method initAttributes
|
||
|
|
* @description Initializes all of the configuration attributes used to create a croppable element.
|
||
|
|
* @param {Object} attr Object literal specifying a set of
|
||
|
|
* configuration attributes used to create the widget.
|
||
|
|
*/
|
||
|
|
|
||
|
|
initAttributes: function(attr) {
|
||
|
|
Crop.superclass.initAttributes.call(this, attr);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @attribute initialXY
|
||
|
|
* @description Array of the XY position that we need to set the crop element to when we build it. Defaults to [10, 10]
|
||
|
|
* @type Array
|
||
|
|
*/
|
||
|
|
this.setAttributeConfig('initialXY', {
|
||
|
|
writeOnce: true,
|
||
|
|
validator: YAHOO.lang.isArray,
|
||
|
|
value: attr.initialXY || [10, 10]
|
||
|
|
});
|
||
|
|
/**
|
||
|
|
* @attribute keyTick
|
||
|
|
* @description The pixel tick for the arrow keys, defaults to 1
|
||
|
|
* @type Number
|
||
|
|
*/
|
||
|
|
this.setAttributeConfig('keyTick', {
|
||
|
|
validator: YAHOO.lang.isNumber,
|
||
|
|
value: attr.keyTick || 1
|
||
|
|
});
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @attribute shiftKeyTick
|
||
|
|
* @description The pixel tick for shift + the arrow keys, defaults to 10
|
||
|
|
* @type Number
|
||
|
|
*/
|
||
|
|
this.setAttributeConfig('shiftKeyTick', {
|
||
|
|
validator: YAHOO.lang.isNumber,
|
||
|
|
value: attr.shiftKeyTick || 10
|
||
|
|
});
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @attribute useKeys
|
||
|
|
* @description Should we use the Arrow keys to position the crop element, defaults to true
|
||
|
|
* @type Boolean
|
||
|
|
*/
|
||
|
|
this.setAttributeConfig('useKeys', {
|
||
|
|
validator: YAHOO.lang.isBoolean,
|
||
|
|
value: ((attr.useKeys === false) ? false : true)
|
||
|
|
});
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @attribute status
|
||
|
|
* @description Show the Resize Utility status, defaults to true
|
||
|
|
* @type Boolean
|
||
|
|
*/
|
||
|
|
this.setAttributeConfig('status', {
|
||
|
|
validator: YAHOO.lang.isBoolean,
|
||
|
|
value: ((attr.status === false) ? false : true),
|
||
|
|
method: function(status) {
|
||
|
|
if (this._resize) {
|
||
|
|
this._resize.set('status', status);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
});
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @attribute minHeight
|
||
|
|
* @description MinHeight of the crop area, default 50
|
||
|
|
* @type Number
|
||
|
|
*/
|
||
|
|
this.setAttributeConfig('minHeight', {
|
||
|
|
validator: YAHOO.lang.isNumber,
|
||
|
|
value: attr.minHeight || 50,
|
||
|
|
method: function(h) {
|
||
|
|
if (this._resize) {
|
||
|
|
this._resize.set('minHeight', h);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
});
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @attribute minWidth
|
||
|
|
* @description MinWidth of the crop area, default 50.
|
||
|
|
* @type Number
|
||
|
|
*/
|
||
|
|
this.setAttributeConfig('minWidth', {
|
||
|
|
validator: YAHOO.lang.isNumber,
|
||
|
|
value: attr.minWidth || 50,
|
||
|
|
method: function(w) {
|
||
|
|
if (this._resize) {
|
||
|
|
this._resize.set('minWidth', w);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
});
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @attribute ratio
|
||
|
|
* @description Set the ratio config option of the Resize Utlility, default false
|
||
|
|
* @type Boolean
|
||
|
|
*/
|
||
|
|
this.setAttributeConfig('ratio', {
|
||
|
|
validator: YAHOO.lang.isBoolean,
|
||
|
|
value: attr.ratio || false,
|
||
|
|
method: function(r) {
|
||
|
|
if (this._resize) {
|
||
|
|
this._resize.set('ratio', r);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
});
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @attribute ratio
|
||
|
|
* @description Set the autoRatio config option of the Resize Utlility, default true
|
||
|
|
* @type Boolean
|
||
|
|
*/
|
||
|
|
this.setAttributeConfig('autoRatio', {
|
||
|
|
validator: YAHOO.lang.isBoolean,
|
||
|
|
value: ((attr.autoRatio === false) ? false : true),
|
||
|
|
method: function(a) {
|
||
|
|
if (this._resize) {
|
||
|
|
this._resize.set('autoRatio', a);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
});
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @attribute initHeight
|
||
|
|
* @description Set the initlal height of the crop area, defaults to 1/4 of the image height
|
||
|
|
* @type Number
|
||
|
|
*/
|
||
|
|
this.setAttributeConfig('initHeight', {
|
||
|
|
writeOnce: true,
|
||
|
|
validator: YAHOO.lang.isNumber,
|
||
|
|
value: attr.initHeight || (this.get('element').height / 4)
|
||
|
|
});
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @attribute initWidth
|
||
|
|
* @description Set the initlal width of the crop area, defaults to 1/4 of the image width
|
||
|
|
* @type Number
|
||
|
|
*/
|
||
|
|
this.setAttributeConfig('initWidth', {
|
||
|
|
validator: YAHOO.lang.isNumber,
|
||
|
|
writeOnce: true,
|
||
|
|
value: attr.initWidth || (this.get('element').width / 4)
|
||
|
|
});
|
||
|
|
|
||
|
|
},
|
||
|
|
/**
|
||
|
|
* @method destroy
|
||
|
|
* @description Destroys the ImageCropper object and all of it's elements & listeners.
|
||
|
|
*/
|
||
|
|
destroy: function() {
|
||
|
|
YAHOO.log('Destroying the ImageCropper', 'info', 'ImageCropper');
|
||
|
|
this._resize.destroy();
|
||
|
|
this._resizeEl.parentNode.removeChild(this._resizeEl);
|
||
|
|
this._mask.parentNode.removeChild(this._mask);
|
||
|
|
Event.purgeElement(this._wrap);
|
||
|
|
this._wrap.parentNode.replaceChild(this.get('element'), this._wrap);
|
||
|
|
|
||
|
|
//Brutal Object Destroy
|
||
|
|
for (var i in this) {
|
||
|
|
if (Lang.hasOwnProperty(this, i)) {
|
||
|
|
this[i] = null;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
},
|
||
|
|
/**
|
||
|
|
* @method toString
|
||
|
|
* @description Returns a string representing the ImageCropper Object.
|
||
|
|
* @return {String}
|
||
|
|
*/
|
||
|
|
toString: function() {
|
||
|
|
if (this.get) {
|
||
|
|
return 'ImageCropper (#' + this.get('id') + ')';
|
||
|
|
}
|
||
|
|
return 'Image Cropper';
|
||
|
|
}
|
||
|
|
});
|
||
|
|
|
||
|
|
YAHOO.widget.ImageCropper = Crop;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @event dragEvent
|
||
|
|
* @description Fires when the DragDrop dragEvent
|
||
|
|
* @type YAHOO.util.CustomEvent
|
||
|
|
*/
|
||
|
|
/**
|
||
|
|
* @event startResizeEvent
|
||
|
|
* @description Fires when when a resize action is started.
|
||
|
|
* @type YAHOO.util.CustomEvent
|
||
|
|
*/
|
||
|
|
/**
|
||
|
|
* @event resizeEvent
|
||
|
|
* @description Fires on every element resize.
|
||
|
|
* @type YAHOO.util.CustomEvent
|
||
|
|
*/
|
||
|
|
/**
|
||
|
|
* @event moveEvent
|
||
|
|
* @description Fires on every element move. Inside these methods: _handleKeyPress, _handleDragEvent, _handleResizeEvent
|
||
|
|
* @type YAHOO.util.CustomEvent
|
||
|
|
*/
|
||
|
|
|
||
|
|
})();
|
||
|
|
|
||
|
|
YAHOO.register("imagecropper", YAHOO.widget.ImageCropper, {version: "2.7.0", build: "1799"});
|