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Electronic signature

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WangShayne/vue-signature

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A electronic signature component by Vue.js

For Vue 3

vue3-signature

Reference and Thanks

signature_pad

API


Props

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

nametypedefaultdescription
sigOptionObject{penColor:"rgb(0, 0, 0)", backgroundColor:"rgb(255,255,255)"}penColor, backgroundColor
wString"100%"parent container width
hString"100%"parent container height
clearOnResizeBooleanfalseCanvas is cleared on window resize
waterMarkObject{}check Usage addWaterMark
disabledBooleanfalsedisabled
defaultUrlString""you want show image by default

Methods

nameparamsdescription
save()/("image/jpeg")/("image/svg+xml")save image as PNG/JPEG/SVG
clearclear canvas
isEmptyReturns true if canvas is empty, otherwise returns false
undoremove the last dot or line
addWaterMark{} // check Usage addWaterMarkaddWaterMark
fromDataURL(url)Draws signature image from data URL.

Events

The components emits the following events:

beginStroke - Triggered before stroke begins.

endStroke - Triggered after stroke ends.

beforeUpdateStroke - Triggered before stroke update.

afterUpdateStroke - Triggered after stroke update.

Usage


npm install vue-signature

A.vue

<template>  <divid="app">    <vueSignatureref="signature":sigOption="option":w="'800px'":h="'400px'":disabled="disabled":defaultUrl="dataUrl"    ></vueSignature>    <vueSignatureref="signature1":sigOption="option"></vueSignature>    <button@click="save">Save</button>    <button@click="clear">Clear</button>    <button@click="undo">Undo</button>    <button@click="addWaterMark">addWaterMark</button>    <button@click="handleDisabled">disabled</button>  </div></template><script>importvueSignaturefrom"vue-signature";exportdefault {  name:"app",  components: {    vueSignature,  },data() {return {      option: {        penColor:"rgb(0, 0, 0)",        backgroundColor:"rgb(255,255,255)",      },      disabled:false,      dataUrl:"https://avatars2.githubusercontent.com/u/17644818?s=460&v=4",    };  },  methods: {save() {var _this=this;var png=_this.$refs.signature.save();var jpeg=_this.$refs.signature.save("image/jpeg");var svg=_this.$refs.signature.save("image/svg+xml");console.log(png);console.log(jpeg);console.log(svg);    },clear() {var _this=this;_this.$refs.signature.clear();    },undo() {var _this=this;_this.$refs.signature.undo();    },addWaterMark() {var _this=this;_this.$refs.signature.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      });    },fromDataURL(url) {var _this=this;_this.$refs.signature.fromDataURL("data:image/png;base64,iVBORw0K...");    },handleDisabled() {var _this=this;_this.disabled=!_this.disabled;    },  },};</script>

License


Released under theMIT License.

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