vue3-signature

A electronic signature component by Vue3.js

Reference and Thanks

signature_pad

API

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Props

w,h need units,like 100px or 100%

name	type	default	description
sigOption	Object	{penColor:"rgb(0, 0, 0)", backgroundColor:"rgb(255,255,255)"}	penColor, backgroundColor
w	String	"100%"	parent container width
h	String	"100%"	parent container height
clearOnResize	Boolean	false	Canvas is cleared on window resize
waterMark	Object	{}	check Usage addWaterMark
disabled	Boolean	false	disabled
defaultUrl	String	""	you want show image by default

Methods

name	params	description
save	()/("image/jpeg")/("image/svg+xml")	save image as PNG/JPEG/SVG
clear		clear canvas
isEmpty		Returns true if canvas is empty, otherwise returns false
undo		remove the last dot or line
addWaterMark	{} // check Usage addWaterMark	addWaterMark
fromDataURL	(url)	Draws signature image from data URL.

Usage

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npm install vue3-signature 

main.js

import Vue3Signature from "vue3-signature"

createApp(App).use(Vue3Signature).mount("#app")

A.vue

<template>

  <Vue3Signature  ref="signature1" :sigOption="state.option" :w="'1280px'" :h="'400px'"
                 :disabled="state.disabled" class="example"></Vue3Signature>
  <button @click="save('image/jpeg')">Save</button>
  <button @click="clear">Clear</button>
  <button @click="undo">Undo</button>
  <button @click="addWaterMark">addWaterMark</button>
  <button @click="fromDataURL">fromDataURL</button>
  <button @click="handleDisabled">disabled</button>

</template>

<script setup>
import {reactive, ref} from 'vue'

const state = reactive({
  count: 0,
  option: {
    penColor: "rgb(0, 0, 0)",
    backgroundColor: "rgb(255,255,255)"
  },
  disabled: false
})

const signature1 = ref(null)

const save = (t) => {
  console.log(signature1.value.save(t))
}

const clear = () => {
  signature1.value.clear()
}

const undo = () => {
  signature1.value.undo();
}

const addWaterMark = () => {
  signature1.value.addWaterMark({
    text: "mark text",          // watermark text, > default ''
    font: "20px Arial",         // mark font, > default '20px sans-serif'
    style: 'all',               // fillText and strokeText,  'all'/'stroke'/'fill', > default 'fill
    fillStyle: "red",           // fillcolor, > default '#333'
    strokeStyle: "blue",	       // strokecolor, > default '#333'
    x: 100,                     // fill positionX, > default 20
    y: 200,                     // fill positionY, > default 20
    sx: 100,                    // stroke positionX, > default 40
    sy: 200                     // stroke positionY, > default 40
  });
}

const fromDataURL = (url) => {
  signature1.value.fromDataURL("https://avatars2.githubusercontent.com/u/17644818?s=460&v=4");
}

const handleDisabled = () => {
  state.disabled = !state.disabled
}

</script>

<style scoped>
.example{
  margin: 0 auto;
}
</style>

For Vue2.x

vue-signature

License

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Released under the MIT License.