
<template>
<div class="test">
<canvas
id="canvas"
width="800"
height="600"
ref="canvas"
@mousedown="canvasDown($event)"
@mouseup="canvasUp($event)"
@mousemove="canvasMove($event)"
></canvas>
<img :src="signSrc" alt="" />
<el-button type="danger" @click="penClick">画笔</el-button>
<el-button type="danger" @click="rectangleClick">矩形</el-button>
<el-button type="danger" @click="roundClick">圆形</el-button>
<el-button type="danger" @click="resetCanvas">清空画布</el-button>
<el-button type="danger" @click="revoke">撤销</el-button>
<el-button type="danger" @click="saveImg">保存图片</el-button>
</div>
</template>
<script>
export default {
components: {
},
data () {
return {
flag: false,
imgUrl:
'https://cube.elemecdn.com/6/94/4d3ea53c084bad6931a56d5158a48jpeg.jpeg',
img: new Image(),
context: {
},
oldX: 0,
oldY: 0,