The start of a new CanvasTexture class

Author: photonstorm

src/textures/CanvasTexture.js

@@ -0,0 +1,92 @@
+/**
+ * @author       Richard Davey <rich@photonstorm.com>
+ * @copyright    2018 Photon Storm Ltd.
+ * @license      {@link https://github.com/photonstorm/phaser/blob/master/license.txt|MIT License}
+ */
+
+var Class = require('../utils/Class');
+var Texture = require('./Texture');
+
+/**
+ * @classdesc
+ * [description]
+ *
+ * @class CanvasTexture
+ * @extends Phaser.Textures.Texture
+ * @memberOf Phaser.Textures
+ * @constructor
+ * @since 3.6.1
+ *
+ * @param {Phaser.Textures.TextureManager} manager - A reference to the Texture Manager this Texture belongs to.
+ * @param {string} key - The unique string-based key of this Texture.
+ * @param {HTMLCanvasElement} source - The source that is used to create the texture. Usually an Image, but can also be a Canvas.
+ * @param {number} [width] - The width of the Texture. This is optional and automatically derived from the source images.
+ * @param {number} [height] - The height of the Texture. This is optional and automatically derived from the source images.
+ */
+var CanvasTexture = new Class({
+
+    Extends: Texture,
+
+    initialize:
+
+    function CanvasTexture (manager, key, source, width, height)
+    {
+        Texture.call(this, manager, key, source, width, height);
+
+        this._texture = this.frames['__BASE'].source;
+
+        this.canvas = this._texture.image;
+
+        this.context = this.canvas.getContext('2d');
+
+        this.width = width;
+
+        this.height = height;
+    },
+
+    /**
+     * This should be called manually if you are running under WebGL.
+     * It will refresh the WebGLTexture from the Canvas source. Only call this if you know that the
+     * canvas has changed, as there is a significant GPU texture allocation cost involved in doing so.
+     *
+     * @method Phaser.Textures.CanvasTexture#refresh
+     * @since 3.6.1
+     *
+     * @return {Phaser.Textures.CanvasTexture} This CanvasTexture.
+     */
+    refresh: function ()
+    {
+        this._texture.update();
+
+        return this;
+    },
+
+    /**
+     * [description]
+     *
+     * @method Phaser.Textures.CanvasTexture#getCanvas
+     * @since 3.6.1
+     *
+     * @return {HTMLCanvasElement} The Canvas DOM element this texture is using.
+     */
+    getCanvas: function ()
+    {
+        return this.canvas;
+    },
+
+    /**
+     * [description]
+     *
+     * @method Phaser.Textures.CanvasTexture#getContext
+     * @since 3.6.1
+     *
+     * @return {HTMLCanvasElement} The Canvas DOM element this texture is using.
+     */
+    getContext: function ()
+    {
+        return this.context;
+    },
+
+});
+
+module.exports = CanvasTexture;