File: src\utils\class.handlebox.js

/*
 * Copyright (c) 2012  Capgemini Technology Services (hereinafter “Capgemini”)
 *
 * License/Terms of Use
 *
 * Permission is hereby granted, free of charge and for the term of intellectual property rights on the Software, to any
 * person obtaining a copy of this software and associated documentation files (the "Software"), to use, copy, modify
 * and propagate free of charge, anywhere in the world, all or part of the Software subject to the following mandatory conditions:
 *
 *   •    The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
 *
 *  Any failure to comply with the above shall automatically terminate the license and be construed as a breach of these
 *  Terms of Use causing significant harm to Capgemini.
 *
 *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
 *  WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON INFRINGEMENT. IN NO EVENT SHALL THE AUTHORS
 *  OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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 *
 *  These Terms of Use are subject to French law.
 */

/**
 * A Tiny box on selected square borders
 * @class CGSGHandleBox
 * @extends {Object}
 * @constructor
 * @param {CGSGNode} parentNode
 * @param {Number} size
 * @param {String} fillColor
 * @param {String} strokeColor
 * @param {Number} lineWidth
 * @param {Number} x
 * @param {Number} y
 * @type {CGSGHandleBox}
 * @author Gwennael Buchet (gwennael.buchet@gmail.com)
 */
var CGSGHandleBox = CGSGObject.extend(
	{
		initialize: function (parentNode, size, fillColor, strokeColor, lineWidth, x, y) {
			/**
			 * @property fillColor
			 * @type {String}
			 */
			this.fillColor = fillColor;

			/**
			 * @property strokeColor
			 * @type {String}
			 */
			this.strokeColor = strokeColor;

			/**
			 * @property lineWidth
			 * @type {Number}
			 */
			this.lineWidth = lineWidth;

			/**
			 * @property size
			 * @type {Number}
			 */
			this.size = size;

			/**
			 * @property _parentNode
			 * @type {CGSGNode}
			 * @private
			 */
			this._parentNode = parentNode;
			/**
			 * @property _position
			 * @type {CGSGPosition}
			 * @private
			 */
			this._position = new CGSGPosition(x, y);
		},

		/**
		 * @method render
		 * @param {CanvasRenderingContext2D} context the context into render the handle box
		 */
		render: function (context) {
			context.lineWidth = this.lineWidth;
			context.strokeStyle = this.strokeColor;
			context.fillStyle = this.fillColor;
			context.strokeRect(this._position.x,
							   this._position.y,
							   this.size / this._parentNode._absoluteScale.x,
							   this.size / this._parentNode._absoluteScale.y);
			context.fillRect(this._position.x,
							 this._position.y,
							 this.size / this._parentNode._absoluteScale.x,
							 this.size / this._parentNode._absoluteScale.y);
		},

		/**
		 * Return true if this handleBox is under the coordinate of the mouse.
		 * @method checkIfSelected
		 * @param {CGSGPosition} mousePosition
		 * @param {Number} threshold Threshold of detection around the box
		 * @return {Boolean}
		 */
		checkIfSelected: function (mousePosition, threshold) {
			return (mousePosition.x >=
					this._parentNode._absolutePosition.x + (this._position.x * this._parentNode._absoluteScale.x) -
					threshold &&
					mousePosition.x <=
					this._parentNode._absolutePosition.x + (this._position.x * this._parentNode._absoluteScale.x) +
					this.size + threshold &&
					mousePosition.y >=
					this._parentNode._absolutePosition.y + (this._position.y * this._parentNode._absoluteScale.y) -
					threshold &&
					mousePosition.y <=
					this._parentNode._absolutePosition.y + (this._position.y * this._parentNode._absoluteScale.y) +
					this.size + threshold);
		},

		/**
		 * @method translateTo
		 * @param {Number} newRelativeX
		 * @param {Number} newRelativeY
		 */
		translateTo: function (newRelativeX, newRelativeY) {
			this._position.x = newRelativeX;
			this._position.y = newRelativeY;
		}
	}
);