angular2-signaturepad

Angular 2 component for szimek/signature_pad.
Fork of wulfsolter/angular2-signaturepad.

V1.1.4

## Features:
- [x] Updated to angular 17

V1.1.3

## Features:
- [x] Updated to angular 15

V1.1.2

## Features:
- [x] Updated to angular 14
- [x] Updated signature_pad to latest

V1.1.0

## Features:
- [x] Added Signature pad control

Install

npm i @vijhhh2/ngx-signaturepad --save

Reference Implementation

- Live Demo
- Source

Usage example

API is identical to szimek/signature_pad.

Options are as per szimek/signature_pad with the following additions:

- canvasWidth: width of the canvas (px)
- canvasHeight: height of the canvas (px)
The above options are provided to avoid accessing the DOM directly from your component to adjust the canvas size.

``typescript

// import into app module

import { SignaturePadModule } from '@vijhhh2/angular2-signaturepad';

...

@NgModule({
declarations: [ ],
imports: [ SignaturePadModule, ReactiveFormsModule ],
providers: [ ],
bootstrap: [ AppComponent ]
})

// then import for use in a component

import { Component, ViewChild } from 'angular2/core';
import { SignaturePad } from 'angular2-signaturepad/signature-pad';

@Component({
template: ''
})

export class SignaturePadPage{

@ViewChild(SignaturePad) signaturePad: SignaturePad;
/**
* Styles that will directly be applied to the canvas element.
*/
styles: Partial = {
border: '1px dashed rgb(192, 192, 192)',
cursor: 'crosshair',
};

signaturePadOptions: Object = { // passed through to szimek/signature_pad constructor
'minWidth': 5,
'canvasWidth': 500,
'canvasHeight': 300
};

constructor() {
// no-op
}

ngAfterViewInit() {
// this.signaturePad is now available
this.signaturePad.set('minWidth', 5); // set szimek/signature_pad options at runtime
this.signaturePad.clear(); // invoke functions from szimek/signature_pad API
}

drawEnd() {
// will be notified of szimek/signature_pad's onEnd event
console.log(this.signaturePad.toDataURL());
}

drawStart() {
// will be notified of szimek/signature_pad's onBegin event
console.log('begin drawing');
}
}
`

Usage with reactive forms

` typescript

@NgModule({
declarations: [ ],
imports: [ SignaturePadModule ],
providers: [ ],
bootstrap: [ AppComponent ]
})

// then import for use in a component

import { AfterViewInit, Component, ViewChild } from '@angular/core';
import { FormBuilder, FormGroup } from '@angular/forms';
import {
SignaturePadOptions,
SignaturePadControl,
} from 'angular2-signaturepad';

export class AppComponent implements AfterViewInit {
@ViewChild(SignaturePadControl)
signaturePad!: SignaturePadControl;

signaturePadOptions: Partial = {
minWidth: 5,
canvasWidth: 500,
canvasHeight: 300,
};

form = this.fb.group({
signature: [],
});

styles: Partial = {
border: '1px dashed rgb(192, 192, 192)',
cursor: 'crosshair',
};

constructor(private fb: FormBuilder) {}

ngAfterViewInit(): void {
this.signaturePad.set('minWidth', 1);
this.signaturePad.clear();
}

clear(): void {
this.signaturePad.clear();
}

drawStart(): void {
console.log('drawStart');
}
drawComplete(): void {
console.log('drawComplete');
}

submit(): void {
console.log(this.form.value);
}
}

`

` html


formControlName="signature"
[canvasStylesObject]="styles"
[exportType]="'dataURL'"
[options]="signaturePadOptions"
(drawStart)="drawStart()"
(drawEnd)="drawComplete()"
>

Clear
Submit

``

* exportType can be 'dataURL' or 'data'
* Where dataUrl will populate the signature field with a dataURL
* Where data will populate the signature field with a PointGroup array