ngx-skltn
Version:
Skeleton loader for Angular
185 lines • 25.7 kB
JavaScript
import { Component, Input, ElementRef, ChangeDetectorRef, HostListener, NgZone, } from '@angular/core';
import { DomSanitizer } from '@angular/platform-browser';
import { Subject } from 'rxjs';
import { throttleTime, debounceTime, filter, tap, takeUntil } from 'rxjs/operators';
import { SkltnService } from '../services/skltn.service';
import { generateId } from '../helpers';
import { BonesList } from '../classes/bones-list.class';
export class SkltnComponent {
constructor(skltnService, element, sanitizer, cd, zone, bonesList) {
this.skltnService = skltnService;
this.element = element;
this.sanitizer = sanitizer;
this.cd = cd;
this.zone = zone;
this.bonesList = bonesList;
this.showSkltn = true;
this.checkInterval = 100;
this.updStream$ = new Subject();
this.checkStream$ = new Subject();
this.unsubscribe$ = new Subject();
this.defaultConfig = {
rectRadius: 4,
bgFill: '#ddd',
flareFill: 'rgba(255, 255, 255, 0.6)',
flareWidth: '150px',
duration: 1200,
delay: 0,
timing: 'ease-in-out',
};
const conf = this.skltnService.config;
this.rectRadius = conf.rectRadius;
this.bgFill = conf.bgFill;
this.flareFill = conf.flareFill;
this.flareWidth = conf.flareWidth;
this.duration = conf.duration;
this.delay = conf.delay;
this.timing = conf.timing;
this.sufix = this.getSufixWithID();
this.gradientId = 'gradient-' + this.sufix;
this.maskId = 'mask-' + this.sufix;
}
onResize(event) {
this.updStream$.next();
}
ngOnInit() {
this.animationCss = this.sanitizer.bypassSecurityTrustHtml(`
<style>
skltnFlareAnimation {
0% { x: calc(0% - ${this.flareWidth}); }
100% { x: 100%; }
}
.skltn-flare {
animation-name: skltnFlareAnimation;
animation-duration: ${this.duration}ms;
animation-timing-function: ${this.timing};
animation-iteration-count: infinite;
animation-delay: ${this.delay}ms;
}
</style>`);
// Bones Updates
this.bonesList.changes.pipe(debounceTime(50), tap(list => {
this.bones = list;
this.calcShapes();
this.cd.detectChanges();
}), filter((list, index) => index === 0), tap(() => {
this.checkStream$.next();
}), takeUntil(this.unsubscribe$)).subscribe();
// Update
this.updStream$.pipe(throttleTime(50), takeUntil(this.unsubscribe$)).subscribe(() => this.calcShapes());
// Update href (Safari Bug, SVG Ref Path)
this.href = window.location.href;
this.zone.runOutsideAngular(() => {
this.checkStream$.pipe(tap(() => {
// Check if href changed
if (this.href !== window.location.href) {
this.href = window.location.href;
this.cd.detectChanges();
}
// Check if root element resized
const el = this.element.nativeElement;
const { width, height } = el.getBoundingClientRect();
if (this.parentClientRect.width !== width || this.parentClientRect.height !== height) {
this.updStream$.next();
this.cd.detectChanges();
}
setTimeout(() => {
this.checkStream$.next();
}, this.checkInterval);
}), takeUntil(this.unsubscribe$)).subscribe();
});
}
ngAfterViewInit() {
}
ngOnDestroy() {
this.unsubscribe$.next();
this.unsubscribe$.complete();
}
getSufixWithID() {
return generateId() + '-skltn';
}
calcShapes() {
var _a;
// Root SVG Element
const el = this.element.nativeElement;
this.parentClientRect = el.getBoundingClientRect();
this.viewBox = `0 0 ${this.parentClientRect.width} ${this.parentClientRect.height}`;
// SVG Shapes
if (!((_a = this.bones) === null || _a === void 0 ? void 0 : _a.length)) {
this.shapes = null;
return;
}
this.shapes = this.bones.map(bone => {
const boneEl = bone.element.nativeElement;
const clientRect = boneEl.getBoundingClientRect();
const radius = bone.rectRadius || this.rectRadius;
if (bone.type === 'circle') {
return {
type: 'circle',
cx: clientRect.x - this.parentClientRect.x + clientRect.width / 2,
cy: clientRect.y - this.parentClientRect.y + clientRect.height / 2,
rx: clientRect.width / 2,
ry: clientRect.height / 2,
};
}
if (bone.type === 'path') {
const x = clientRect.x - this.parentClientRect.x;
const y = clientRect.y - this.parentClientRect.y;
let transform = `translate(${x}, ${y})`;
if (bone.pathWidth && bone.pathHeight) {
const xScale = (clientRect.width / bone.pathWidth).toFixed(2);
const yScale = (clientRect.height / bone.pathHeight).toFixed(2);
transform += ` scale(${xScale}, ${yScale})`;
}
return {
type: 'path',
width: clientRect.width,
height: clientRect.height,
transform,
template: bone.template,
};
}
return {
type: 'rect',
x: clientRect.x - this.parentClientRect.x,
y: clientRect.y - this.parentClientRect.y,
width: clientRect.width,
height: clientRect.height,
rx: radius,
ry: radius,
};
});
}
}
SkltnComponent.decorators = [
{ type: Component, args: [{
selector: 'skltn-root',
template: "<div [innerHTML]=\"animationCss\"></div>\n\n<svg class=\"svg-root\" x=\"0px\" y=\"0px\" [attr.viewBox]=\"viewBox\" *ngIf=\"shapes?.length && showSkltn\">\n\n <!-- Gradient -->\n <linearGradient [attr.id]=\"gradientId\">\n <stop class=\"stop stop--1\" [attr.stop-color]=\"flareFill\" stop-opacity=\"0\" offset=\"0\"></stop>\n <stop class=\"stop stop--2\" [attr.stop-color]=\"flareFill\" stop-opacity=\"1\" offset=\"50%\"></stop>\n <stop class=\"stop stop--3\" [attr.stop-color]=\"flareFill\" stop-opacity=\"0\" offset=\"100%\"></stop>\n </linearGradient>\n\n <defs>\n <!-- Mask -->\n <mask [attr.id]=\"maskId\">\n <!-- Shapes -->\n <ng-container *ngFor=\"let shape of shapes\">\n <!-- Rect Type -->\n <rect *ngIf=\"shape.type === 'rect'\" [attr.x]=\"shape.x\" [attr.y]=\"shape.y\" [attr.rx]=\"shape.rx\"\n [attr.ry]=\"shape.ry\" [attr.width]=\"shape.width\" [attr.height]=\"shape.height\" fill=\"#FFFFFF\" />\n <!-- Circle Type -->\n <ellipse *ngIf=\"shape.type === 'circle'\" [attr.cx]=\"shape.cx\" [attr.cy]=\"shape.cy\" [attr.rx]=\"shape.rx\" [attr.ry]=\"shape.ry\" fill=\"#FFFFFF\"></ellipse>\n <!-- Path Type -->\n <ng-container *ngIf=\"shape.type === 'path'\">\n <g fill=\"#FFFFFF\" [attr.transform]=\"shape.transform\">\n <ng-container *ngTemplateOutlet=\"shape.template\"></ng-container>\n </g>\n </ng-container>\n </ng-container>\n </mask>\n </defs>\n\n <g [attr.mask]=\"'url(' + href + '#' + maskId + ')'\">\n <!-- Background Rectangle -->\n <rect class=\"bg-fill\" x=\"0\" y=\"0\" width=\"100%\" height=\"100%\" [attr.fill]=\"bgFill\"></rect>\n\n <!-- Flare -->\n <rect class=\"skltn-flare\" [attr.x]=\"'-' + flareWidth\" y=\"0\" [attr.width]=\"flareWidth\" height=\"100%\" [attr.fill]=\"'url(' + href + '#' + gradientId + ')'\"></rect>\n </g>\n\n</svg>\n\n<ng-content></ng-content>\n",
providers: [{
provide: BonesList,
useClass: BonesList,
}],
styles: [":host{display:block;position:relative}.svg-root{display:block;position:absolute;top:0;bottom:0;left:0;right:0;z-index:1}"]
},] }
];
SkltnComponent.ctorParameters = () => [
{ type: SkltnService },
{ type: ElementRef },
{ type: DomSanitizer },
{ type: ChangeDetectorRef },
{ type: NgZone },
{ type: BonesList }
];
SkltnComponent.propDecorators = {
rectRadius: [{ type: Input }],
bgFill: [{ type: Input }],
flareFill: [{ type: Input }],
flareWidth: [{ type: Input }],
duration: [{ type: Input }],
delay: [{ type: Input }],
timing: [{ type: Input }],
showSkltn: [{ type: Input }],
checkInterval: [{ type: Input }],
onResize: [{ type: HostListener, args: ['window:resize', ['$event'],] }]
};
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{\n  Component, OnInit, Input, ElementRef,\n  ChangeDetectorRef, HostListener, AfterViewInit, NgZone, OnDestroy,\n} from '@angular/core';\nimport { SkltnBoneDirective } from '../directives/skltn-bone.directive';\nimport { DomSanitizer, SafeHtml } from '@angular/platform-browser';\nimport { Subject } from 'rxjs';\nimport { throttleTime, debounceTime, filter, tap, takeUntil } from 'rxjs/operators';\nimport { SkltnConfig } from '../interfaces/skltn-config';\nimport { SkltnService } from '../services/skltn.service';\nimport { generateId } from '../helpers';\nimport { BonesList } from '../classes/bones-list.class';\n\n@Component({\n  selector: 'skltn-root',\n  templateUrl: './skltn.component.html',\n  styleUrls: ['./skltn.component.scss'],\n  providers: [{\n    provide: BonesList,\n    useClass: BonesList,\n  }]\n})\nexport class SkltnComponent implements OnInit, OnDestroy, AfterViewInit {\n\n  @Input() rectRadius: number;\n\n  @Input() bgFill: string;\n\n  @Input() flareFill: string;\n\n  @Input() flareWidth: string;\n\n  @Input() duration: number;\n\n  @Input() delay: number;\n\n  @Input() timing: string;\n\n  @Input() showSkltn = true;\n\n  @Input() checkInterval = 100;\n\n  viewBox: string;\n\n  shapes: any[];\n\n  parentClientRect: any;\n\n  animationCss: SafeHtml;\n\n  href: string;\n\n  sufix: string;\n\n  gradientId: string;\n\n  maskId: string;\n\n  updStream$ = new Subject();\n\n  checkStream$ = new Subject();\n\n  unsubscribe$ = new Subject();\n\n  defaultConfig: SkltnConfig = {\n    rectRadius: 4,\n    bgFill: '#ddd',\n    flareFill: 'rgba(255, 255, 255, 0.6)',\n    flareWidth: '150px',\n    duration: 1200,\n    delay: 0,\n    timing: 'ease-in-out',\n  };\n\n  private bones: SkltnBoneDirective[];\n\n  constructor(\n    private skltnService: SkltnService,\n    private element: ElementRef,\n    private sanitizer: DomSanitizer,\n    private cd: ChangeDetectorRef,\n    private zone: NgZone,\n    private bonesList: BonesList,\n  ) {\n    const conf = this.skltnService.config;\n    this.rectRadius = conf.rectRadius;\n    this.bgFill = conf.bgFill;\n    this.flareFill = conf.flareFill;\n    this.flareWidth = conf.flareWidth;\n    this.duration = conf.duration;\n    this.delay = conf.delay;\n    this.timing = conf.timing;\n    this.sufix = this.getSufixWithID();\n    this.gradientId = 'gradient-' + this.sufix;\n    this.maskId = 'mask-' + this.sufix;\n  }\n\n  @HostListener('window:resize', ['$event'])\n  onResize(event: Event) {\n    this.updStream$.next();\n  }\n\n  ngOnInit() {\n    this.animationCss = this.sanitizer.bypassSecurityTrustHtml(`\n    <style>\n    @keyframes skltnFlareAnimation {\n        0% { x: calc(0% - ${this.flareWidth}); }\n        100% { x: 100%; }\n    }\n    .skltn-flare {\n      animation-name: skltnFlareAnimation;\n      animation-duration: ${this.duration}ms;\n      animation-timing-function: ${this.timing};\n      animation-iteration-count: infinite;\n      animation-delay: ${this.delay}ms;\n    }\n    </style>`);\n\n    // Bones Updates\n    this.bonesList.changes.pipe(\n      debounceTime(50),\n      tap(list => {\n        this.bones = list;\n        this.calcShapes();\n        this.cd.detectChanges();\n      }),\n      filter((list, index) => index === 0),\n      tap(() => {\n        this.checkStream$.next();\n      }),\n      takeUntil(this.unsubscribe$),\n    ).subscribe();\n\n    // Update\n    this.updStream$.pipe(\n      throttleTime(50),\n      takeUntil(this.unsubscribe$),\n    ).subscribe(() => this.calcShapes());\n\n    // Update href (Safari Bug, SVG Ref Path)\n    this.href = window.location.href;\n\n    this.zone.runOutsideAngular(() => {\n      this.checkStream$.pipe(\n        tap(() => {\n          // Check if href changed\n          if (this.href !== window.location.href) {\n            this.href = window.location.href;\n            this.cd.detectChanges();\n          }\n\n          // Check if root element resized\n          const el = this.element.nativeElement;\n          const { width, height } = el.getBoundingClientRect();\n          if (this.parentClientRect.width !== width || this.parentClientRect.height !== height) {\n            this.updStream$.next();\n            this.cd.detectChanges();\n          }\n          setTimeout(() => {\n            this.checkStream$.next();\n          }, this.checkInterval);\n        }),\n        takeUntil(this.unsubscribe$),\n      ).subscribe();\n    });\n  }\n\n  ngAfterViewInit() {\n  }\n\n  ngOnDestroy() {\n    this.unsubscribe$.next();\n    this.unsubscribe$.complete();\n  }\n\n  getSufixWithID(): string {\n    return generateId() + '-skltn';\n  }\n\n  calcShapes(): void {\n    // Root SVG Element\n    const el = this.element.nativeElement;\n    this.parentClientRect = el.getBoundingClientRect();\n    this.viewBox = `0 0 ${this.parentClientRect.width} ${this.parentClientRect.height}`;\n\n    // SVG Shapes\n    if (!this.bones?.length) {\n      this.shapes = null;\n      return;\n    }\n    this.shapes = this.bones.map(bone => {\n      const boneEl = bone.element.nativeElement;\n      const clientRect = boneEl.getBoundingClientRect();\n      const radius = bone.rectRadius || this.rectRadius;\n      if (bone.type === 'circle') {\n        return {\n          type: 'circle',\n          cx: clientRect.x - this.parentClientRect.x + clientRect.width / 2,\n          cy: clientRect.y - this.parentClientRect.y + clientRect.height / 2,\n          rx: clientRect.width / 2,\n          ry: clientRect.height / 2,\n        };\n      }\n      if (bone.type === 'path') {\n        const x = clientRect.x - this.parentClientRect.x;\n        const y = clientRect.y - this.parentClientRect.y;\n        let transform = `translate(${x}, ${y})`;\n        if (bone.pathWidth && bone.pathHeight) {\n          const xScale = (clientRect.width / bone.pathWidth).toFixed(2);\n          const yScale = (clientRect.height / bone.pathHeight).toFixed(2);\n          transform += ` scale(${xScale}, ${yScale})`;\n        }\n        return {\n          type: 'path',\n          width: clientRect.width,\n          height: clientRect.height,\n          transform,\n          template: bone.template,\n        };\n      }\n      return {\n        type: 'rect',\n        x: clientRect.x - this.parentClientRect.x,\n        y: clientRect.y - this.parentClientRect.y,\n        width: clientRect.width,\n        height: clientRect.height,\n        rx: radius,\n        ry: radius,\n      };\n    });\n  }\n\n}\n"]}