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| /*
* Photo Editor SDK - photoeditorsdk.com
* Copyright (c) 2013-2015 9elements GmbH
*
* Released under Attribution-NonCommercial 3.0 Unported
* http://creativecommons.org/licenses/by-nc/3.0/
*
* For commercial use, please contact us at contact@9elements.com
*/
'use strict';
Object.defineProperty(exports, '__esModule', {
value: true
});
// istanbul ignore next
var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ('value' in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { Eif (protoProps) defineProperties(Constructor.prototype, protoProps); Eif (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();
// istanbul ignore next
var _get = function get(_x2, _x3, _x4) { var _again = true; _function: while (_again) { var object = _x2, property = _x3, receiver = _x4; _again = false; Iif (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); Iif (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { _x2 = parent; _x3 = property; _x4 = receiver; _again = true; desc = parent = undefined; continue _function; } } else Eif ('value' in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } } };
// istanbul ignore next
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }
// istanbul ignore next
function _classCallCheck(instance, Constructor) { Iif (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } }
// istanbul ignore next
function _inherits(subClass, superClass) { Iif (typeof superClass !== 'function' && superClass !== null) { throw new TypeError('Super expression must either be null or a function, not ' + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); Eif (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }
var _renderer = require('./renderer');
var _renderer2 = _interopRequireDefault(_renderer);
var _libMathVector2 = require('../lib/math/vector2');
var _libMathVector22 = _interopRequireDefault(_libMathVector2);
var _vendorPromise = require('../vendor/promise');
var _vendorPromise2 = _interopRequireDefault(_vendorPromise);
/**
* @class
* @alias ImglyKit.CanvasRenderer
* @extends {ImglyKit.Renderer}
* @private
*/
var CanvasRenderer = (function (_Renderer) {
_inherits(CanvasRenderer, _Renderer);
function CanvasRenderer() {
_classCallCheck(this, CanvasRenderer);
_get(Object.getPrototypeOf(CanvasRenderer.prototype), 'constructor', this).apply(this, arguments);
}
_createClass(CanvasRenderer, [{
key: 'cache',
/**
* Caches the current canvas content for the given identifier
* @param {String} identifier
*/
value: function cache(identifier) {
this._cache[identifier] = {
data: this._context.getImageData(0, 0, this._canvas.width, this._canvas.height),
size: new _libMathVector22['default'](this._canvas.width, this._canvas.height)
};
}
/**
* Draws the stored texture / image data for the given identifier
* @param {String} identifier
*/
}, {
key: 'drawCached',
value: function drawCached(identifier) {
var _cache$identifier = this._cache[identifier];
var data = _cache$identifier.data;
var size = _cache$identifier.size;
this._canvas.width = size.x;
this._canvas.height = size.y;
this._context.putImageData(data, 0, 0);
}
/**
* Checks whether this type of renderer is supported in the current environment
* @abstract
* @returns {boolean}
*/
}, {
key: '_getContext',
/**
* Gets the rendering context from the Canva
* @return {RenderingContext}
* @abstract
*/
value: function _getContext() {
/* istanbul ignore next */
return this._canvas.getContext('2d');
}
/**
* Draws the given image on the canvas
* @param {Image} image
* @returns {Promis}
*/
}, {
key: 'drawImage',
value: function drawImage(image) {
this._context.drawImage(image, 0, 0, image.width, image.height, 0, 0, this._canvas.width, this._canvas.height);
return _vendorPromise2['default'].resolve();
}
/**
* Resizes the current canvas picture to the given dimensions
* @param {Vector2} dimensions
* @return {Promise}
*/
}, {
key: 'resizeTo',
value: function resizeTo(dimensions) {
dimensions = dimensions.clone().floor();
if (this._canvas.width === dimensions.x && this._canvas.height === dimensions.y) {
return;
}
// Create a temporary canvas to draw to
var newCanvas = this.createCanvas();
newCanvas.width = dimensions.x;
newCanvas.height = dimensions.y;
var newContext = newCanvas.getContext('2d');
// Draw the source canvas onto the new one
newContext.drawImage(this._canvas, 0, 0, this._canvas.width, this._canvas.height, 0, 0, newCanvas.width, newCanvas.height);
// Set the new canvas and context
this.setCanvas(newCanvas);
}
/**
* Returns a cloned version of the current canvas
* @return {Canvas}
*/
}, {
key: 'cloneCanvas',
value: function cloneCanvas() {
var canvas = this.createCanvas();
var context = canvas.getContext('2d');
// Resize the canvas
canvas.width = this._canvas.width;
canvas.height = this._canvas.height;
// Draw the current canvas on the new one
context.drawImage(this._canvas, 0, 0);
return canvas;
}
/**
* Resets the renderer
* @param {Boolean} resetCache = false
* @override
*/
}, {
key: 'reset',
value: function reset() {
var resetCache = arguments.length <= 0 || arguments[0] === undefined ? false : arguments[0];
if (resetCache) {
this._cache = [];
}
}
/**
* Returns the initial dimensions before any operations have been applied
* @param {Array.<Operation>} stack
* @param {ImageDimensions} dimensions
*/
}, {
key: 'getInitialDimensionsForStack',
value: function getInitialDimensionsForStack(stack, dimensions) {
// Since canvas operations resize the canvas, the initial
// dimensions is the same as the image dimensions
return new _libMathVector22['default'](this._image.width, this._image.height);
}
/**
* Sets the canvas dimensions
* @param {Vector2} dimensions
*/
}, {
key: 'setSize',
value: function setSize(dimensions) {
dimensions = dimensions.clone().floor();
Iif (this._canvas.width === dimensions.x && this._canvas.height === dimensions.y) {
return;
}
this._canvas.width = dimensions.x;
this._canvas.height = dimensions.y;
this._size.copy(dimensions);
}
/**
* Gets called after the rendering has been done. Resizes the canvas
* to its final size
* @param {ImageDimensions} dimensions
*/
}, {
key: 'postRender',
value: function postRender(dimensions) {
var canvasDimensions = new _libMathVector22['default'](this._canvas.width, this._canvas.height);
var newDimensions = dimensions.calculateFinalDimensions(canvasDimensions);
this.resizeTo(newDimensions);
}
}], [{
key: 'isSupported',
value: function isSupported() {
var elem = this.prototype.createCanvas();
return !!(elem.getContext && elem.getContext('2d'));
}
}, {
key: 'identifier',
/**
* A unique string that identifies this renderer
* @type {String}
*/
get: function get() {
return 'canvas';
}
}]);
return CanvasRenderer;
})(_renderer2['default']);
exports['default'] = CanvasRenderer;
module.exports = exports['default'];
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photoeditorsdk.com\n * Copyright (c) 2013-2015 9elements GmbH\n *\n * Released under Attribution-NonCommercial 3.0 Unported\n * http://creativecommons.org/licenses/by-nc/3.0/\n *\n * For commercial use, please contact us at contact@9elements.com\n */\nimport Renderer from './renderer'\nimport Vector2 from '../lib/math/vector2'\nimport Promise from '../vendor/promise'\n\n/**\n * @class\n * @alias ImglyKit.CanvasRenderer\n * @extends {ImglyKit.Renderer}\n * @private\n */\nclass CanvasRenderer extends Renderer {\n  /**\n   * A unique string that identifies this renderer\n   * @type {String}\n   */\n  static get identifier () {\n    return 'canvas'\n  }\n\n  /**\n   * Caches the current canvas content for the given identifier\n   * @param {String} identifier\n   */\n  cache (identifier) {\n    this._cache[identifier] = {\n      data: this._context.getImageData(0, 0, this._canvas.width, this._canvas.height),\n      size: new Vector2(this._canvas.width, this._canvas.height)\n    }\n  }\n\n  /**\n   * Draws the stored texture / image data for the given identifier\n   * @param {String} identifier\n   */\n  drawCached (identifier) {\n    let { data, size } = this._cache[identifier]\n    this._canvas.width = size.x\n    this._canvas.height = size.y\n    this._context.putImageData(data, 0, 0)\n  }\n\n  /**\n   * Checks whether this type of renderer is supported in the current environment\n   * @abstract\n   * @returns {boolean}\n   */\n  static isSupported () {\n    var elem = this.prototype.createCanvas()\n    return !!(elem.getContext && elem.getContext('2d'))\n  }\n\n  /**\n   * Gets the rendering context from the Canva\n   * @return {RenderingContext}\n   * @abstract\n   */\n  _getContext () {\n    /* istanbul ignore next */\n    return this._canvas.getContext('2d')\n  }\n\n  /**\n   * Draws the given image on the canvas\n   * @param  {Image} image\n   * @returns {Promis}\n   */\n  drawImage (image) {\n    this._context.drawImage(image, 0, 0, image.width, image.height, 0, 0, this._canvas.width, this._canvas.height)\n    return Promise.resolve()\n  }\n\n  /**\n   * Resizes the current canvas picture to the given dimensions\n   * @param  {Vector2} dimensions\n   * @return {Promise}\n   */\n  resizeTo (dimensions) {\n    dimensions = dimensions.clone().floor()\n    if (this._canvas.width === dimensions.x &&\n        this._canvas.height === dimensions.y) {\n      return\n    }\n\n    // Create a temporary canvas to draw to\n    var newCanvas = this.createCanvas()\n    newCanvas.width = dimensions.x\n    newCanvas.height = dimensions.y\n    var newContext = newCanvas.getContext('2d')\n\n    // Draw the source canvas onto the new one\n    newContext.drawImage(this._canvas,\n      0, 0,\n      this._canvas.width,\n      this._canvas.height,\n      0, 0,\n      newCanvas.width,\n      newCanvas.height)\n\n    // Set the new canvas and context\n    this.setCanvas(newCanvas)\n  }\n\n  /**\n   * Returns a cloned version of the current canvas\n   * @return {Canvas}\n   */\n  cloneCanvas () {\n    var canvas = this.createCanvas()\n    var context = canvas.getContext('2d')\n\n    // Resize the canvas\n    canvas.width = this._canvas.width\n    canvas.height = this._canvas.height\n\n    // Draw the current canvas on the new one\n    context.drawImage(this._canvas, 0, 0)\n\n    return canvas\n  }\n\n  /**\n   * Resets the renderer\n   * @param {Boolean} resetCache = false\n   * @override\n   */\n  reset (resetCache=false) {\n    if (resetCache) {\n      this._cache = []\n    }\n  }\n\n  /**\n   * Returns the initial dimensions before any operations have been applied\n   * @param {Array.<Operation>} stack\n   * @param {ImageDimensions} dimensions\n   */\n  getInitialDimensionsForStack (stack, dimensions) {\n    // Since canvas operations resize the canvas, the initial\n    // dimensions is the same as the image dimensions\n    return new Vector2(this._image.width, this._image.height)\n  }\n\n  /**\n   * Sets the canvas dimensions\n   * @param {Vector2} dimensions\n   */\n  setSize (dimensions) {\n    dimensions = dimensions.clone().floor()\n    if (this._canvas.width === dimensions.x &&\n      this._canvas.height === dimensions.y) {\n        return\n      }\n\n    this._canvas.width = dimensions.x\n    this._canvas.height = dimensions.y\n    this._size.copy(dimensions)\n  }\n\n  /**\n   * Gets called after the rendering has been done. Resizes the canvas\n   * to its final size\n   * @param {ImageDimensions} dimensions\n   */\n  postRender (dimensions) {\n    const canvasDimensions = new Vector2(this._canvas.width, this._canvas.height)\n    const newDimensions = dimensions.calculateFinalDimensions(canvasDimensions)\n    this.resizeTo(newDimensions)\n  }\n}\n\nexport default CanvasRenderer\n"]} |