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| /* global Image */
/*
* 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); Iif (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();
// istanbul ignore next
var _get = function get(_x, _x2, _x3) { var _again = true; _function: while (_again) { var object = _x, property = _x2, receiver = _x3; _again = false; if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { _x = parent; _x2 = property; _x3 = receiver; _again = true; desc = parent = undefined; continue _function; } } else if ('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) { if (!(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 _operation = require('./operation');
var _operation2 = _interopRequireDefault(_operation);
var _libMathVector2 = require('../lib/math/vector2');
var _libMathVector22 = _interopRequireDefault(_libMathVector2);
var _vendorPromise = require('../vendor/promise');
var _vendorPromise2 = _interopRequireDefault(_vendorPromise);
/**
* An operation that can draw text on the canvas
*
* @class
* @alias ImglyKit.Operations.StickersOperation
* @extends ImglyKit.Operation
*/
var StickersOperation = (function (_Operation) {
_inherits(StickersOperation, _Operation);
function StickersOperation() {
_classCallCheck(this, StickersOperation);
for (var _len = arguments.length, args = Array(_len), _key = 0; _key < _len; _key++) {
args[_key] = arguments[_key];
}
_get(Object.getPrototypeOf(StickersOperation.prototype), 'constructor', this).apply(this, args);
/**
* The texture index used for the sticker
* @type {Number}
* @private
*/
this._textureIndex = 1;
/**
* The fragment shader used for this operation
*/
this._fragmentShader = '\n precision mediump float;\n varying vec2 v_texCoord;\n uniform sampler2D u_image;\n uniform sampler2D u_stickerImage;\n uniform vec2 u_position;\n uniform vec2 u_size;\n\n void main() {\n vec4 color0 = texture2D(u_image, v_texCoord);\n vec2 relative = (v_texCoord - u_position) / u_size;\n\n if (relative.x >= 0.0 && relative.x <= 1.0 &&\n relative.y >= 0.0 && relative.y <= 1.0) {\n\n vec4 color1 = texture2D(u_stickerImage, relative);\n\n // GL_SOURCE_ALPHA, GL_ONE_MINUS_SOURCE_ALPHA\n gl_FragColor = color1 + color0 * (1.0 - color1.a);\n\n } else {\n\n gl_FragColor = color0;\n\n }\n }\n ';
this._loadedStickers = {};
}
/**
* A unique string that identifies this operation. Can be used to select
* operations.
* @type {String}
*/
/**
* Applies this operation
* @param {Renderer} renderer
* @return {Promise}
* @abstract
*/
_createClass(StickersOperation, [{
key: 'render',
value: function render(renderer) {
var self = this;
return this._loadSticker().then(function (image) {
if (renderer.identifier === 'webgl') {
/* istanbul ignore next */
return self._renderWebGL(renderer, image);
} else {
return self._renderCanvas(renderer, image);
}
});
}
/**
* Crops this image using WebGL
* @param {WebGLRenderer} renderer
* @param {Image} image
* @private
*/
/* istanbul ignore next */
}, {
key: '_renderWebGL',
value: function _renderWebGL(renderer, image) {
var canvas = renderer.getCanvas();
var gl = renderer.getContext();
var position = this._options.position.clone();
var canvasSize = new _libMathVector22['default'](canvas.width, canvas.height);
if (this._options.numberFormat === 'absolute') {
position.divide(canvasSize);
}
var size = new _libMathVector22['default'](image.width, image.height);
if (typeof this._options.size !== 'undefined') {
size.copy(this._options.size);
if (this._options.numberFormat === 'relative') {
size.multiply(canvasSize);
}
// Calculate image ratio, scale by width
var ratio = image.height / image.width;
size.y = size.x * ratio;
}
size.divide(canvasSize);
position.y = 1 - position.y; // Invert y
position.y -= size.y; // Fix y
// Upload the texture
gl.activeTexture(gl.TEXTURE0 + this._textureIndex);
this._texture = gl.createTexture();
gl.bindTexture(gl.TEXTURE_2D, this._texture);
gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR);
gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
// Set premultiplied alpha
gl.pixelStorei(gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL, true);
gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, image);
gl.activeTexture(gl.TEXTURE0);
// Execute the shader
renderer.runShader(null, this._fragmentShader, {
uniforms: {
u_stickerImage: { type: 'i', value: this._textureIndex },
u_position: { type: '2f', value: [position.x, position.y] },
u_size: { type: '2f', value: [size.x, size.y] }
}
});
}
/**
* Crops the image using Canvas2D
* @param {CanvasRenderer} renderer
* @param {Image} image
* @private
*/
}, {
key: '_renderCanvas',
value: function _renderCanvas(renderer, image) {
var canvas = renderer.getCanvas();
var context = renderer.getContext();
var canvasSize = new _libMathVector22['default'](canvas.width, canvas.height);
var scaledPosition = this._options.position.clone();
if (this._options.numberFormat === 'relative') {
scaledPosition.multiply(canvasSize);
}
var size = new _libMathVector22['default'](image.width, image.height);
if (typeof this._options.size !== 'undefined') {
size.copy(this._options.size);
if (this._options.numberFormat === 'relative') {
size.multiply(canvasSize);
}
}
context.drawImage(image, 0, 0, image.width, image.height, scaledPosition.x, scaledPosition.y, size.x, size.y);
}
/**
* Loads the sticker
* @return {Promise}
* @private
*/
}, {
key: '_loadSticker',
value: function _loadSticker() {
var isBrowser = typeof window !== 'undefined';
if (isBrowser) {
return this._loadImageBrowser(this._options.sticker);
} else {
return this._loadImageNode(this._options.sticker);
}
}
/**
* Loads the given image using the browser's `Image` class
* @param {String} fileName
* @return {Promise}
* @private
*/
}, {
key: '_loadImageBrowser',
value: function _loadImageBrowser(fileName) {
var self = this;
return new _vendorPromise2['default'](function (resolve, reject) {
// Return preloaded sticker if available
if (self._loadedStickers[fileName]) {
return resolve(self._loadedStickers[fileName]);
}
var image = new Image();
image.addEventListener('load', function () {
self._loadedStickers[fileName] = image;
resolve(image);
});
image.addEventListener('error', function () {
reject(new Error('Could not load sticker: ' + fileName));
});
image.crossOrigin = 'Anonymous';
image.src = self._kit.getAssetPath(fileName);
});
}
/**
* Loads the given image using node.js' `fs` and node-canvas `Image`
* @param {String} fileName
* @return {Promise}
* @private
*/
}, {
key: '_loadImageNode',
value: function _loadImageNode(fileName) {
var Canvas = require('canvas');
var fs = require('fs');
var self = this;
var image = new Canvas.Image();
var path = self._kit.getAssetPath(fileName);
return new _vendorPromise2['default'](function (resolve, reject) {
fs.readFile(path, function (err, buffer) {
if (err) return reject(err);
image.src = buffer;
resolve(image);
});
});
}
/**
* The registered stickers
* @type {Object.<String,String>}
*/
}, {
key: 'stickers',
get: function get() {
return this._stickers;
}
}]);
return StickersOperation;
})(_operation2['default']);
StickersOperation.prototype.identifier = 'stickers';
/**
* Specifies the available options for this operation
* @type {Object}
*/
StickersOperation.prototype.availableOptions = {
sticker: { type: 'string', required: true },
position: { type: 'vector2', 'default': new _libMathVector22['default'](0, 0) },
size: { type: 'vector2', 'default': new _libMathVector22['default'](0, 0) }
};
exports['default'] = StickersOperation;
module.exports = exports['default'];
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global Image */\n/*\n * Photo Editor SDK - 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 */\n\nimport Operation from './operation'\nimport Vector2 from '../lib/math/vector2'\nimport Promise from '../vendor/promise'\n\n/**\n * An operation that can draw text on the canvas\n *\n * @class\n * @alias ImglyKit.Operations.StickersOperation\n * @extends ImglyKit.Operation\n */\nclass StickersOperation extends Operation {\n  constructor (...args) {\n    super(...args)\n\n    /**\n     * The texture index used for the sticker\n     * @type {Number}\n     * @private\n     */\n    this._textureIndex = 1\n\n    /**\n     * The fragment shader used for this operation\n     */\n    this._fragmentShader = `\n      precision mediump float;\n      varying vec2 v_texCoord;\n      uniform sampler2D u_image;\n      uniform sampler2D u_stickerImage;\n      uniform vec2 u_position;\n      uniform vec2 u_size;\n\n      void main() {\n        vec4 color0 = texture2D(u_image, v_texCoord);\n        vec2 relative = (v_texCoord - u_position) / u_size;\n\n        if (relative.x >= 0.0 && relative.x <= 1.0 &&\n          relative.y >= 0.0 && relative.y <= 1.0) {\n\n            vec4 color1 = texture2D(u_stickerImage, relative);\n\n            // GL_SOURCE_ALPHA, GL_ONE_MINUS_SOURCE_ALPHA\n            gl_FragColor = color1 + color0 * (1.0 - color1.a);\n\n        } else {\n\n          gl_FragColor = color0;\n\n        }\n      }\n    `\n\n    this._loadedStickers = {}\n  }\n\n  /**\n   * Applies this operation\n   * @param  {Renderer} renderer\n   * @return {Promise}\n   * @abstract\n   */\n  render (renderer) {\n    var self = this\n    return this._loadSticker()\n      .then(function (image) {\n        if (renderer.identifier === 'webgl') {\n          /* istanbul ignore next */\n          return self._renderWebGL(renderer, image)\n        } else {\n          return self._renderCanvas(renderer, image)\n        }\n      })\n  }\n\n  /**\n   * Crops this image using WebGL\n   * @param  {WebGLRenderer} renderer\n   * @param  {Image} image\n   * @private\n   */\n  /* istanbul ignore next */\n  _renderWebGL (renderer, image) {\n    var canvas = renderer.getCanvas()\n    var gl = renderer.getContext()\n\n    var position = this._options.position.clone()\n    var canvasSize = new Vector2(canvas.width, canvas.height)\n\n    if (this._options.numberFormat === 'absolute') {\n      position.divide(canvasSize)\n    }\n\n    var size = new Vector2(image.width, image.height)\n    if (typeof this._options.size !== 'undefined') {\n      size.copy(this._options.size)\n\n      if (this._options.numberFormat === 'relative') {\n        size.multiply(canvasSize)\n      }\n\n      // Calculate image ratio, scale by width\n      let ratio = image.height / image.width\n      size.y = size.x * ratio\n    }\n    size.divide(canvasSize)\n\n    position.y = 1 - position.y // Invert y\n    position.y -= size.y // Fix y\n\n    // Upload the texture\n    gl.activeTexture(gl.TEXTURE0 + this._textureIndex)\n    this._texture = gl.createTexture()\n\n    gl.bindTexture(gl.TEXTURE_2D, this._texture)\n\n    gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR)\n    gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR)\n    gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE)\n    gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE)\n\n    // Set premultiplied alpha\n    gl.pixelStorei(gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL, true)\n\n    gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, image)\n    gl.activeTexture(gl.TEXTURE0)\n\n    // Execute the shader\n    renderer.runShader(null, this._fragmentShader, {\n      uniforms: {\n        u_stickerImage: { type: 'i', value: this._textureIndex },\n        u_position: { type: '2f', value: [position.x, position.y] },\n        u_size: { type: '2f', value: [size.x, size.y] }\n      }\n    })\n  }\n\n  /**\n   * Crops the image using Canvas2D\n   * @param  {CanvasRenderer} renderer\n   * @param  {Image} image\n   * @private\n   */\n  _renderCanvas (renderer, image) {\n    var canvas = renderer.getCanvas()\n    var context = renderer.getContext()\n\n    var canvasSize = new Vector2(canvas.width, canvas.height)\n    var scaledPosition = this._options.position.clone()\n\n    if (this._options.numberFormat === 'relative') {\n      scaledPosition.multiply(canvasSize)\n    }\n\n    var size = new Vector2(image.width, image.height)\n    if (typeof this._options.size !== 'undefined') {\n      size.copy(this._options.size)\n\n      if (this._options.numberFormat === 'relative') {\n        size.multiply(canvasSize)\n      }\n    }\n\n    context.drawImage(image,\n      0, 0,\n      image.width, image.height,\n      scaledPosition.x, scaledPosition.y,\n      size.x, size.y)\n  }\n\n  /**\n   * Loads the sticker\n   * @return {Promise}\n   * @private\n   */\n  _loadSticker () {\n    var isBrowser = typeof window !== 'undefined'\n    if (isBrowser) {\n      return this._loadImageBrowser(this._options.sticker)\n    } else {\n      return this._loadImageNode(this._options.sticker)\n    }\n  }\n\n  /**\n   * Loads the given image using the browser's `Image` class\n   * @param  {String} fileName\n   * @return {Promise}\n   * @private\n   */\n  _loadImageBrowser (fileName) {\n    var self = this\n    return new Promise((resolve, reject) => {\n      // Return preloaded sticker if available\n      if (self._loadedStickers[fileName]) {\n        return resolve(self._loadedStickers[fileName])\n      }\n\n      var image = new Image()\n\n      image.addEventListener('load', () => {\n        self._loadedStickers[fileName] = image\n        resolve(image)\n      })\n      image.addEventListener('error', () => {\n        reject(new Error('Could not load sticker: ' + fileName))\n      })\n\n      image.crossOrigin = 'Anonymous'\n      image.src = self._kit.getAssetPath(fileName)\n    })\n  }\n\n  /**\n   * Loads the given image using node.js' `fs` and node-canvas `Image`\n   * @param  {String} fileName\n   * @return {Promise}\n   * @private\n   */\n  _loadImageNode (fileName) {\n    var Canvas = require('canvas')\n    var fs = require('fs')\n\n    var self = this\n    var image = new Canvas.Image()\n    var path = self._kit.getAssetPath(fileName)\n\n    return new Promise((resolve, reject) => {\n      fs.readFile(path, (err, buffer) => {\n        if (err) return reject(err)\n\n        image.src = buffer\n        resolve(image)\n      })\n    })\n  }\n\n  /**\n   * The registered stickers\n   * @type {Object.<String,String>}\n   */\n  get stickers () {\n    return this._stickers\n  }\n}\n\n/**\n * A unique string that identifies this operation. Can be used to select\n * operations.\n * @type {String}\n */\nStickersOperation.prototype.identifier = 'stickers'\n\n/**\n * Specifies the available options for this operation\n * @type {Object}\n */\nStickersOperation.prototype.availableOptions = {\n  sticker: { type: 'string', required: true },\n  position: { type: 'vector2', default: new Vector2(0, 0) },\n  size: { type: 'vector2', default: new Vector2(0, 0) }\n}\n\nexport default StickersOperation\n"]} |