67 lines
2.3 KiB
JavaScript
67 lines
2.3 KiB
JavaScript
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import { settings } from "@pixi/settings";
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class CanvasRenderTarget {
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/**
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* @param width - the width for the newly created canvas
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* @param height - the height for the newly created canvas
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* @param {number} [resolution=PIXI.settings.RESOLUTION] - The resolution / device pixel ratio of the canvas
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*/
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constructor(width, height, resolution) {
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this._canvas = settings.ADAPTER.createCanvas(), this._context = this._canvas.getContext("2d"), this.resolution = resolution || settings.RESOLUTION, this.resize(width, height);
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}
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/**
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* Clears the canvas that was created by the CanvasRenderTarget class.
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* @private
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*/
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clear() {
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this._checkDestroyed(), this._context.setTransform(1, 0, 0, 1, 0, 0), this._context.clearRect(0, 0, this._canvas.width, this._canvas.height);
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}
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/**
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* Resizes the canvas to the specified width and height.
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* @param desiredWidth - the desired width of the canvas
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* @param desiredHeight - the desired height of the canvas
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*/
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resize(desiredWidth, desiredHeight) {
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this._checkDestroyed(), this._canvas.width = Math.round(desiredWidth * this.resolution), this._canvas.height = Math.round(desiredHeight * this.resolution);
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}
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/** Destroys this canvas. */
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destroy() {
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this._context = null, this._canvas = null;
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}
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/**
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* The width of the canvas buffer in pixels.
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* @member {number}
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*/
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get width() {
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return this._checkDestroyed(), this._canvas.width;
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}
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set width(val) {
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this._checkDestroyed(), this._canvas.width = Math.round(val);
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}
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/**
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* The height of the canvas buffer in pixels.
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* @member {number}
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*/
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get height() {
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return this._checkDestroyed(), this._canvas.height;
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}
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set height(val) {
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this._checkDestroyed(), this._canvas.height = Math.round(val);
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}
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/** The Canvas object that belongs to this CanvasRenderTarget. */
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get canvas() {
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return this._checkDestroyed(), this._canvas;
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}
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/** A CanvasRenderingContext2D object representing a two-dimensional rendering context. */
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get context() {
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return this._checkDestroyed(), this._context;
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}
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_checkDestroyed() {
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if (this._canvas === null)
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throw new TypeError("The CanvasRenderTarget has already been destroyed");
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}
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}
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export {
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CanvasRenderTarget
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};
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//# sourceMappingURL=CanvasRenderTarget.mjs.map
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