vue电子签名_elementui 电子签名

<!--html-->
<template>
       <div class="canvasBox" ref="canvasHW">
           <canvas
               @touchstart="touchStart"
               @touchmove="touchMove"
               @touchend="touchEnd"
               ref="canvasF"
               @mousedown="mouseDown"
               @mousemove="mouseMove"
               @mouseup="mouseUp"
           ></canvas>
           <div class="btnBox">
               <button @click="overwrite">重写</button>
               <button>提交签名</button>
           </div>
       </div>
</template>
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18

<script>
//js
import axios from "axios";
export default {
   
    name: "signature",
    data() {
   
        return {
   
            points: [],
            canvasTxt: null,
            stage_info: [],
            startX: 0,
            startY: 0,
            moveY: 0,
            moveX: 0,
            endY: 0,
            endX: 0,
            w: null,
            h: null,
            isDown: false
        };
    },
    created() {
   },
    mounted() {
   
        let canvas = this.$refs.canvasF;
        canvas.height = this.$refs.canvasHW.offsetHeight - 460;//此处修改canvas高度
        canvas.width = this.$refs.canvasHW.offsetWidth - 10;
        this.canvasTxt = canvas.getContext("2d");
        this.stage_info = canvas.getBoundingClientRect();
    },
    components: {
   
        NavPublic
    },
    methods: {
   
        backHome() {
   
            window.history.back();
        },
        //电脑设备事件
        mouseDown(ev) {
   
            ev = ev || event;
            ev.preventDefault();
            console.log(ev);
            if (ev) {
   
                let obj = {
   
                    x: ev.offsetX,
                    y: ev.offsetY
                };
                console.log(obj);
                this.startX = obj
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58