@icanvas/components/2d/libs/cache.js

这是icanvas的界面组件包

import Component from './base.js';
import Canvas from '@icanvas/apis/libs/canvas.js';
export default class Cache extends Component {
	context = Canvas().getContext('2d');
	get width() {
		return this.context.canvas.width;
	}
	get height() {
		return this.context.canvas.height;
	}
	get canvas() {
		return this.context.canvas;
	}
	constructor(width, height) {
		super();
		this.setSize(width, height);
	}
	setSize(x, y) {
		this.context.SetSize(x, y);
		return this;
	}
	setAnchorSize(x = 0.5, y = 0.5) {
		this.anchor.x = this.width * x;
		this.anchor.y = this.height * y;
		return this;
	}
	setStatic(callback) {
		callback.call(this, this.context);
		return this;
	}
	update(Context) {
		Context.drawImage(this.canvas, -this.anchor.x, -this.anchor.y, this.width, this.height);
	}
	hitMe(x, y) {
		return x >= 0 && x <= this.width && y >= 0 && y <= this.height;
	}
}