ngx-colors-v
Version:
A beautiful color picker for angular that let you choose from a color palette, using sliders (Hue, Lightness, Alpha sliders) or through text input(hex, rgba, hsla)
90 lines • 13.3 kB
JavaScript
import { Input, Directive, Output, EventEmitter, HostListener } from '@angular/core';
import * as i0 from "@angular/core";
export class SliderDirective {
constructor(elRef) {
this.elRef = elRef;
this.dragEnd = new EventEmitter();
this.dragStart = new EventEmitter();
this.newValue = new EventEmitter();
this.listenerMove = (event) => this.move(event);
this.listenerStop = () => this.stop();
}
mouseDown(event) {
this.start(event);
}
touchStart(event) {
this.start(event);
}
move(event) {
event.preventDefault();
this.setCursor(event);
}
start(event) {
this.setCursor(event);
event.stopPropagation();
document.addEventListener('mouseup', this.listenerStop);
document.addEventListener('touchend', this.listenerStop);
document.addEventListener('mousemove', this.listenerMove);
document.addEventListener('touchmove', this.listenerMove);
this.dragStart.emit();
}
stop() {
document.removeEventListener('mouseup', this.listenerStop);
document.removeEventListener('touchend', this.listenerStop);
document.removeEventListener('mousemove', this.listenerMove);
document.removeEventListener('touchmove', this.listenerMove);
this.dragEnd.emit();
}
getX(event) {
const position = this.elRef.nativeElement.getBoundingClientRect();
const pageX = (event.pageX !== undefined) ? event.pageX : event.touches[0].pageX;
return pageX - position.left - window.pageXOffset;
}
getY(event) {
const position = this.elRef.nativeElement.getBoundingClientRect();
const pageY = (event.pageY !== undefined) ? event.pageY : event.touches[0].pageY;
return pageY - position.top - window.pageYOffset;
}
setCursor(event) {
const width = this.elRef.nativeElement.offsetWidth;
const height = this.elRef.nativeElement.offsetHeight;
const x = Math.max(0, Math.min(this.getX(event), width));
const y = Math.max(0, Math.min(this.getY(event), height));
if (this.rgX !== undefined && this.rgY !== undefined) {
this.newValue.emit({ s: x / width, v: (1 - y / height), rgX: this.rgX, rgY: this.rgY });
}
else if (this.rgX === undefined && this.rgY !== undefined) {
this.newValue.emit({ v: y / height, rgY: this.rgY });
}
else if (this.rgX !== undefined && this.rgY === undefined) {
this.newValue.emit({ v: x / width, rgX: this.rgX });
}
}
}
SliderDirective.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "13.3.0", ngImport: i0, type: SliderDirective, deps: [{ token: i0.ElementRef }], target: i0.ɵɵFactoryTarget.Directive });
SliderDirective.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: "12.0.0", version: "13.3.0", type: SliderDirective, selector: "[slider]", inputs: { rgX: "rgX", rgY: "rgY", slider: "slider" }, outputs: { dragEnd: "dragEnd", dragStart: "dragStart", newValue: "newValue" }, host: { listeners: { "mousedown": "mouseDown($event)", "touchstart": "touchStart($event)" } }, ngImport: i0 });
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "13.3.0", ngImport: i0, type: SliderDirective, decorators: [{
type: Directive,
args: [{
selector: '[slider]'
}]
}], ctorParameters: function () { return [{ type: i0.ElementRef }]; }, propDecorators: { rgX: [{
type: Input
}], rgY: [{
type: Input
}], slider: [{
type: Input
}], dragEnd: [{
type: Output
}], dragStart: [{
type: Output
}], newValue: [{
type: Output
}], mouseDown: [{
type: HostListener,
args: ['mousedown', ['$event']]
}], touchStart: [{
type: HostListener,
args: ['touchstart', ['$event']]
}] } });
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{ Input, Directive, Output, EventEmitter, HostListener, ElementRef } from '@angular/core';\r\n\r\n@Directive({\r\n    selector: '[slider]'\r\n  })\r\n  export class SliderDirective {\r\n    private listenerMove: any;\r\n    private listenerStop: any;\r\n  \r\n    @Input() rgX: number;\r\n    @Input() rgY: number;\r\n  \r\n    @Input() slider: string;\r\n  \r\n    @Output() dragEnd = new EventEmitter();\r\n    @Output() dragStart = new EventEmitter();\r\n  \r\n    @Output() newValue = new EventEmitter<any>();\r\n  \r\n    @HostListener('mousedown', ['$event']) mouseDown(event: any): void {\r\n      this.start(event);\r\n    }\r\n  \r\n    @HostListener('touchstart', ['$event']) touchStart(event: any): void {\r\n      this.start(event);\r\n    }\r\n  \r\n    constructor(private elRef: ElementRef) {\r\n      this.listenerMove = (event: any) => this.move(event);\r\n  \r\n      this.listenerStop = () => this.stop();\r\n    }\r\n  \r\n    private move(event: any): void {\r\n      event.preventDefault();\r\n  \r\n      this.setCursor(event);\r\n    }\r\n  \r\n    private start(event: any): void {\r\n      this.setCursor(event);\r\n  \r\n      event.stopPropagation();\r\n  \r\n      document.addEventListener('mouseup', this.listenerStop);\r\n      document.addEventListener('touchend', this.listenerStop);\r\n      document.addEventListener('mousemove', this.listenerMove);\r\n      document.addEventListener('touchmove', this.listenerMove);\r\n  \r\n      this.dragStart.emit();\r\n    }\r\n  \r\n    private stop(): void {\r\n      document.removeEventListener('mouseup', this.listenerStop);\r\n      document.removeEventListener('touchend', this.listenerStop);\r\n      document.removeEventListener('mousemove', this.listenerMove);\r\n      document.removeEventListener('touchmove', this.listenerMove);\r\n  \r\n      this.dragEnd.emit();\r\n    }\r\n  \r\n    private getX(event: any): number {\r\n      const position = this.elRef.nativeElement.getBoundingClientRect();\r\n  \r\n      const pageX = (event.pageX !== undefined) ? event.pageX : event.touches[0].pageX;\r\n  \r\n      return pageX - position.left - window.pageXOffset;\r\n    }\r\n  \r\n    private getY(event: any): number {\r\n      const position = this.elRef.nativeElement.getBoundingClientRect();\r\n  \r\n      const pageY = (event.pageY !== undefined) ? event.pageY : event.touches[0].pageY;\r\n  \r\n      return pageY - position.top - window.pageYOffset;\r\n    }\r\n  \r\n    private setCursor(event: any): void {\r\n      const width = this.elRef.nativeElement.offsetWidth;\r\n      const height = this.elRef.nativeElement.offsetHeight;\r\n  \r\n      const x = Math.max(0, Math.min(this.getX(event), width));\r\n      const y = Math.max(0, Math.min(this.getY(event), height));\r\n  \r\n      if (this.rgX !== undefined && this.rgY !== undefined) {\r\n        this.newValue.emit({ s: x / width, v: (1 - y / height), rgX: this.rgX, rgY: this.rgY });\r\n      } else if (this.rgX === undefined && this.rgY !== undefined) {\r\n        this.newValue.emit({ v: y / height, rgY: this.rgY });\r\n      } else if (this.rgX !== undefined && this.rgY === undefined) {\r\n        this.newValue.emit({ v: x / width, rgX: this.rgX });\r\n      }\r\n    }\r\n  }"]}