miroir de
https://github.com/ialley-workshop-open/uni-halo.git
synchronisé 2026-06-12 21:29:31 +08:00
小莫唐尼
191 lignes
4.6 KiB
Vue
191 lignes
4.6 KiB
Vue
<template>
|
||
<view class="tm-signBoard" >
|
||
<!-- @touchmove.stop.prevent="stopEvent" -->
|
||
<!-- #ifdef H5 || APP-VUE || APP-PLUS -->
|
||
|
||
<canvas
|
||
:style="{
|
||
width: ctx_w + 'px',
|
||
height: ctx_h + 'px'
|
||
}"
|
||
:disable-scroll="true"
|
||
@touchstart="touchstart"
|
||
@touchmove.stop.prevent="touchsmove"
|
||
@touchend="touchsend"
|
||
@mousedown="touchstart"
|
||
@mousemove.stop.prevent="touchsmove"
|
||
@mouseup="touchsend"
|
||
|
||
:canvas-id="uid"
|
||
:id="uid"
|
||
></canvas>
|
||
<!-- #endif -->
|
||
<!-- #ifdef MP -->
|
||
<canvas
|
||
:style="{
|
||
width: ctx_w + 'px',
|
||
height: ctx_h + 'px'
|
||
}"
|
||
:disable-scroll="true"
|
||
@touchstart="touchstart"
|
||
@touchmove="touchsmove"
|
||
@touchend="touchsend"
|
||
@mousedown="touchstart"
|
||
@mousemove.stop.prevent="touchsmove"
|
||
@mouseup="touchsend"
|
||
canvas-id="tm-signBoard-id"
|
||
id="tm-signBoard-id"
|
||
></canvas>
|
||
<!-- #endif -->
|
||
</view>
|
||
</template>
|
||
|
||
<script>
|
||
/**
|
||
* 手写签名板
|
||
* @description 手写签名板,笔峰效果,通过ref执行clear和save功能。
|
||
* @property {Number} line-width = [] 默认：6，线宽度。
|
||
* @property {String} line-color = [] 默认：'#000000'，线颜色
|
||
* @property {Number} width = [] 默认：0， 画布宽，默认使用父组件的宽高。单位upx
|
||
* @property {Number} height = [] 默认：400， 画布高，单位upx
|
||
* @example <tm-signBoard></tm-signBoard>
|
||
*/
|
||
export default {
|
||
name: 'tm-signBoard',
|
||
props: {
|
||
lineWidth: {
|
||
type: Number,
|
||
default: 6
|
||
},
|
||
lineColor: {
|
||
type: String,
|
||
default: '#000000'
|
||
},
|
||
// 默认使用父组件的宽高。单位upx
|
||
width: {
|
||
type: Number,
|
||
default: 0
|
||
},
|
||
// 单位upx
|
||
height: {
|
||
type: Number,
|
||
default: 400
|
||
}
|
||
},
|
||
data() {
|
||
return {
|
||
ctx: null,
|
||
uid:"f",
|
||
ctx_w: 0,
|
||
ctx_h: 0
|
||
};
|
||
},
|
||
created() {
|
||
// #ifdef H5 || APP-VUE || APP-PLUS
|
||
this.uid = this.$tm.guid();
|
||
// #endif
|
||
},
|
||
async mounted() {
|
||
let qins = await this.$Querey('.tm-signBoard',this,50).catch(e => {});
|
||
|
||
this.ctx_w = uni.upx2px(this.width) || qins[0].width;
|
||
this.ctx_h = uni.upx2px(this.height) || qins[0].height;
|
||
this.$nextTick(function() {
|
||
// #ifdef H5 || APP-VUE || APP-PLUS
|
||
this.ctx = uni.createCanvasContext(this.uid, this);
|
||
// #endif
|
||
// #ifdef MP
|
||
this.ctx = uni.createCanvasContext('tm-signBoard-id', this);
|
||
// #endif
|
||
this.handwriting = new uni.$tm.HandwritingSelf(this.ctx,this.ctx_w,this.ctx_h,this.lineWidth,this.lineColor)
|
||
});
|
||
},
|
||
methods: {
|
||
touchstart(event) {
|
||
event.preventDefault()
|
||
event.stopPropagation()
|
||
|
||
if (event.type.indexOf('mouse')==-1&&event.changedTouches.length==1) {
|
||
var touch = event.changedTouches[0];
|
||
this.handwriting.down(touch.x,touch.y);
|
||
|
||
}else{
|
||
this.handwriting.down(event.pageX-event.currentTarget.offsetLeft,event.pageY-event.currentTarget.offsetTop);
|
||
}
|
||
},
|
||
touchsmove(event) {
|
||
event.preventDefault()
|
||
event.stopPropagation()
|
||
if (event.type.indexOf('mouse')==-1&&event.changedTouches.length == 1) {
|
||
var touch = event.changedTouches[0];
|
||
this.handwriting.move(touch.x,touch.y);
|
||
|
||
}else{
|
||
this.handwriting.move(event.pageX-event.currentTarget.offsetLeft,event.pageY-event.currentTarget.offsetTop);
|
||
}
|
||
},
|
||
touchsend(event) {
|
||
event.preventDefault()
|
||
event.stopPropagation()
|
||
if (event.type.indexOf('mouse')==-1&&event.changedTouches.length == 1) {
|
||
var touch = event.changedTouches[0];
|
||
this.handwriting.up(touch.x,touch.y);
|
||
}else{
|
||
this.handwriting.up(event.pageX-event.currentTarget.offsetLeft,event.pageY-event.currentTarget.offsetTop);
|
||
}
|
||
},
|
||
clear() {
|
||
if (!this.ctx) return;
|
||
this.ctx.clearRect(0, 0, this.ctx_w, this.ctx_h);
|
||
this.ctx.draw(false);
|
||
this.$nextTick(function() {
|
||
// #ifdef H5
|
||
this.ctx = uni.createCanvasContext(this.uid, this);
|
||
// #endif
|
||
// #ifndef H5
|
||
this.ctx = uni.createCanvasContext('tm-signBoard-id', this);
|
||
// #endif
|
||
this.handwriting = new uni.$tm.HandwritingSelf(this.ctx,this.ctx_w,this.ctx_h,this.lineWidth,this.lineColor)
|
||
});
|
||
},
|
||
save() {
|
||
let t = this;
|
||
|
||
return new Promise((su, fa) => {
|
||
if (!this.ctx) {
|
||
fa('ctx未初始化');
|
||
return;
|
||
}
|
||
let uid =this.uid;
|
||
// #ifndef H5
|
||
uid='tm-signBoard-id'
|
||
// #endif
|
||
uni.canvasToTempFilePath(
|
||
{
|
||
x: 0,
|
||
y: 0,
|
||
width: t.ctx_w,
|
||
height: t.ctx_h,
|
||
canvasId: uid,
|
||
success: function(res) {
|
||
// 在H5平台下，tempFilePath 为 base64
|
||
su(res.tempFilePath);
|
||
},
|
||
fail: res => {
|
||
fa(res);
|
||
}
|
||
},
|
||
|
||
);
|
||
});
|
||
},
|
||
stopEvent(event) {
|
||
event.preventDefault()
|
||
event.stopPropagation()
|
||
}
|
||
}
|
||
};
|
||
</script>
|
||
|
||
<style lang="scss"></style>
|