ngx-signaturepad
Version:
Fork of wulfsolter/angular2-signaturepad
116 lines • 14.7 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.SignaturePad = void 0;
var core_1 = require("@angular/core");
var i0 = require("@angular/core");
;
var SignaturePad = /** @class */ (function () {
function SignaturePad(elementRef) {
// no op
this.elementRef = elementRef;
this.options = this.options || {};
this.onBeginEvent = new core_1.EventEmitter();
this.onEndEvent = new core_1.EventEmitter();
}
SignaturePad.prototype.ngAfterContentInit = function () {
var sp = require('signature_pad')['default']; //
var canvas = this.elementRef.nativeElement.querySelector('canvas');
if (this.options['canvasHeight']) {
canvas.height = this.options['canvasHeight'];
}
if (this.options['canvasWidth']) {
canvas.width = this.options['canvasWidth'];
}
this.signaturePad = new sp(canvas, this.options);
this.signaturePad.onBegin = this.onBegin.bind(this);
this.signaturePad.onEnd = this.onEnd.bind(this);
};
SignaturePad.prototype.resizeCanvas = function () {
// When zoomed out to less than 100%, for some very strange reason,
// some browsers report devicePixelRatio as less than 1
// and only part of the canvas is cleared then.
var ratio = Math.max(window.devicePixelRatio || 1, 1);
var canvas = this.signaturePad._canvas;
canvas.width = canvas.offsetWidth * ratio;
canvas.height = canvas.offsetHeight * ratio;
canvas.getContext('2d').scale(ratio, ratio);
this.signaturePad.clear(); // otherwise isEmpty() might return incorrect value
};
// Returns signature image as an array of point groups
SignaturePad.prototype.toData = function () {
return this.signaturePad.toData();
};
// Draws signature image from an array of point groups
SignaturePad.prototype.fromData = function (points) {
this.signaturePad.fromData(points);
};
// Returns signature image as data URL (see https://mdn.io/todataurl for the list of possible paramters)
SignaturePad.prototype.toDataURL = function (imageType, quality) {
return this.signaturePad.toDataURL(imageType, quality); // save image as data URL
};
// Draws signature image from data URL
SignaturePad.prototype.fromDataURL = function (dataURL, options) {
if (options === void 0) { options = {}; }
this.signaturePad.fromDataURL(dataURL, options);
};
// Clears the canvas
SignaturePad.prototype.clear = function () {
this.signaturePad.clear();
};
// Returns true if canvas is empty, otherwise returns false
SignaturePad.prototype.isEmpty = function () {
return this.signaturePad.isEmpty();
};
// Unbinds all event handlers
SignaturePad.prototype.off = function () {
this.signaturePad.off();
};
// Rebinds all event handlers
SignaturePad.prototype.on = function () {
this.signaturePad.on();
};
// set an option on the signaturePad - e.g. set('minWidth', 50);
SignaturePad.prototype.set = function (option, value) {
switch (option) {
case 'canvasHeight':
this.signaturePad._canvas.height = value;
break;
case 'canvasWidth':
this.signaturePad._canvas.width = value;
break;
default:
this.signaturePad[option] = value;
}
};
// notify subscribers on signature begin
SignaturePad.prototype.onBegin = function () {
this.onBeginEvent.emit(true);
};
// notify subscribers on signature end
SignaturePad.prototype.onEnd = function () {
this.onEndEvent.emit(true);
};
SignaturePad.prototype.queryPad = function () {
return this.signaturePad;
};
SignaturePad.ɵfac = function SignaturePad_Factory(t) { return new (t || SignaturePad)(i0.ɵɵdirectiveInject(i0.ElementRef)); };
SignaturePad.ɵcmp = i0.ɵɵdefineComponent({ type: SignaturePad, selectors: [["signature-pad"]], inputs: { options: "options" }, outputs: { onBeginEvent: "onBeginEvent", onEndEvent: "onEndEvent" }, decls: 1, vars: 0, template: function SignaturePad_Template(rf, ctx) { if (rf & 1) {
i0.ɵɵelement(0, "canvas");
} }, encapsulation: 2 });
return SignaturePad;
}());
exports.SignaturePad = SignaturePad;
(function () { (typeof ngDevMode === "undefined" || ngDevMode) && i0.ɵsetClassMetadata(SignaturePad, [{
type: core_1.Component,
args: [{
template: '<canvas></canvas>',
selector: 'signature-pad',
}]
}], function () { return [{ type: i0.ElementRef }]; }, { options: [{
type: core_1.Input
}], onBeginEvent: [{
type: core_1.Output
}], onEndEvent: [{
type: core_1.Output
}] }); })();
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//\r\n    let canvas: any = this.elementRef.nativeElement.querySelector('canvas');\r\n\r\n    if ((<any>this.options)['canvasHeight']) {\r\n      canvas.height = (<any>this.options)['canvasHeight'];\r\n    }\r\n\r\n    if ((<any>this.options)['canvasWidth']) {\r\n      canvas.width = (<any>this.options)['canvasWidth'];\r\n    }\r\n\r\n    this.signaturePad = new sp(canvas, this.options);\r\n    this.signaturePad.onBegin = this.onBegin.bind(this);\r\n    this.signaturePad.onEnd = this.onEnd.bind(this);\r\n  }\r\n\r\n  public resizeCanvas(): void {\r\n    // When zoomed out to less than 100%, for some very strange reason,\r\n    // some browsers report devicePixelRatio as less than 1\r\n    // and only part of the canvas is cleared then.\r\n    const ratio: number = Math.max(window.devicePixelRatio || 1, 1);\r\n    const canvas: any = this.signaturePad._canvas;\r\n    canvas.width = canvas.offsetWidth * ratio;\r\n    canvas.height = canvas.offsetHeight * ratio;\r\n    canvas.getContext('2d').scale(ratio, ratio);\r\n    this.signaturePad.clear(); // otherwise isEmpty() might return incorrect value\r\n  }\r\n\r\n   // Returns signature image as an array of point groups\r\n  public toData(): Array<PointGroup> {\r\n    return this.signaturePad.toData();\r\n  }\r\n\r\n  // Draws signature image from an array of point groups\r\n  public fromData(points: Array<PointGroup>): void {\r\n    this.signaturePad.fromData(points);\r\n  }\r\n\r\n  // Returns signature image as data URL (see https://mdn.io/todataurl for the list of possible paramters)\r\n  public toDataURL(imageType?: string, quality?: number): string {\r\n    return this.signaturePad.toDataURL(imageType, quality); // save image as data URL\r\n  }\r\n\r\n  // Draws signature image from data URL\r\n  public fromDataURL(dataURL: string, options: Object = {}): void {\r\n    this.signaturePad.fromDataURL(dataURL, options);\r\n  }\r\n\r\n  // Clears the canvas\r\n  public clear(): void {\r\n    this.signaturePad.clear();\r\n  }\r\n\r\n  // Returns true if canvas is empty, otherwise returns false\r\n  public isEmpty(): boolean {\r\n    return this.signaturePad.isEmpty();\r\n  }\r\n\r\n  // Unbinds all event handlers\r\n  public off(): void {\r\n    this.signaturePad.off();\r\n  }\r\n\r\n  // Rebinds all event handlers\r\n  public on(): void {\r\n    this.signaturePad.on();\r\n  }\r\n\r\n  // set an option on the signaturePad - e.g. set('minWidth', 50);\r\n  public set(option: string, value: any): void {\r\n    switch (option) {\r\n      case 'canvasHeight':\r\n        this.signaturePad._canvas.height = value;\r\n        break;\r\n      case 'canvasWidth':\r\n        this.signaturePad._canvas.width = value;\r\n        break;\r\n      default:\r\n        this.signaturePad[option] = value;\r\n    }\r\n  }\r\n\r\n  // notify subscribers on signature begin\r\n  public onBegin(): void {\r\n    this.onBeginEvent.emit(true);\r\n  }\r\n\r\n  // notify subscribers on signature end\r\n  public onEnd(): void {\r\n    this.onEndEvent.emit(true);\r\n  }\r\n\r\n  public queryPad(): any {\r\n      return this.signaturePad;\r\n  }\r\n}\r\n"]}