1/* 2 * Copyright (C) 2022 Huawei Device Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16import { Rect } from './Rect.js'; 17 18export abstract class Graph { 19 frame: Rect; 20 context2D: CanvasRenderingContext2D; 21 canvas: HTMLCanvasElement | undefined | null; 22 23 protected constructor(canvas: HTMLCanvasElement | undefined | null, c: CanvasRenderingContext2D, frame: Rect) { 24 this.canvas = canvas; 25 this.frame = frame; 26 this.context2D = c; 27 } 28 29 abstract draw(): void; 30} 31