@Component({
 selector: 'my-slide-img',
 templateUrl: 'slide-img.component.html',
 styleUrls: ['slide-img.component.css'],
 animations: [
  trigger('imgMove', [
   /** 不显示 */
   state('off', style({'display': 'none', 'z-index': '0', 'transform': 'translateX(0)'})),
   /** 上一张图片 */
   state('prev', style({'z-index': '1',
   'transform': 'translateX(-100%)'})),
   /** 下一张图片 */
   state('next', style({'z-index': '2', 'transform': 'translateX(100%)'})),
   /** 当前图片 */
   state('on', style({'z-index': '3', 'transform': 'translateX(0)'})),
   transition('prev=>on', [
    animate('0.3s ease-in')
   ]),
   transition('next=>on', [
    animate('0.3s ease-in')
   ]),
   transition('on=>prev', [
    animate('0.3s ease-in')
   ]),
   transition('on=>next', [
    animate('0.3s ease-in')
   ])
  ])
 ]
})
export class SlideImgComponent { }

@Input() public imgs: SlideImg[];

<my-slide-img [imgs]="imgs"></my-slide-img>

<div class="imgs">
 <img src="{{img.Url}}" alt="" class="img"
 *ngFor="let img of imgs;let i=index"
 (mySwipe)="Change($event)"
 [@imgMove]="ImgState(i)">
</div>

<div class="btn" (click)="Prev()">Prev</div>
<div class="btn" (click)="Next()">Next</div>

.imgs{
 position: relative;width: 100%;height: 15em;
 overflow: hidden;
}
.img{
 position: absolute;
 width: 100%;
 height: 100%;
 background: pink;
 transition: 0.2s;
}
.btn{
 display: inline-block;
 padding: 1em 2em;font-size: 1em;border-radius: 0.5em;
 border: 1px solid #ddd;cursor: pointer;
 margin: 1em;background: #eee;box-shadow: 0.1em 0.1em 0.2em #aaa;
}
.btn:active{
 background: #eee;
 box-shadow: none;
}

import { Component, OnInit, Input,
 animate,
 style,
 transition,
 trigger,
 state,
 HostListener
} from '@angular/core';
import { SlideImg } from './slide-img.interface';

@Component({
 selector: 'my-slide-img',
 templateUrl: 'slide-img.component.html',
 styleUrls: ['slide-img.component.css'],
 animations: [
  trigger('imgMove', [
   /** 不显示 */
   state('off', style({'display': 'none', 'z-index': '0', 'transform': 'translateX(0)'})),
   /** 上一张图片 */
   state('prev', style({'z-index': '1',
   'transform': 'translateX(-100%)'})),
   /** 下一张图片 */
   state('next', style({'z-index': '2', 'transform': 'translateX(100%)'})),
   /** 当前图片 */
   state('on', style({'z-index': '3', 'transform': 'translateX(0)'})),
   transition('prev=>on', [
    animate('0.3s ease-in')
   ]),
   transition('next=>on', [
    animate('0.3s ease-in')
   ]),
   transition('on=>prev', [
    animate('0.3s ease-in')
   ]),
   transition('on=>next', [
    animate('0.3s ease-in')
   ])
  ])
 ]
})
export class SlideImgComponent {
 @Input() public imgs: SlideImg[];
 public current;
 constructor() {
  this.current = 0;
 }
 public ImgState(index) {
  if (this.imgs && this.imgs.length) {
   if (this.current === 0) {
    return index === 0 ? 'on' :
    index === 1 ? 'next' :
    index === this.imgs.length - 1 ? 'prev' :
    'off';
   } else if (this.current === this.imgs.length - 1) {
    return index === this.imgs.length - 1 ? 'on' :
    index === this.imgs.length - 2 ? 'prev' :
    index === 0 ? 'next' :
    'off';
   }
   switch (index - this.current) {
    case 0:
     return 'on';
    case 1:
     return 'next';
    case -1:
     return 'prev';
    default:
     return 'off';
   }
  } else {
   return 'off';
  }
 }
 public Next() {
  this.current = (this.current + 1) % this.imgs.length;
 }
 public Prev() {
  this.current = this.current - 1 < 0 ? this.imgs.length - 1 : this.current - 1;
 }

 public Change(e) {
  if (e === 'left') {
   this.Next();
  } else if (e === 'right') {
   this.Prev();
  }
 }
}

import { Directive, Input, HostListener, Output, EventEmitter } from '@angular/core';

@Directive({ selector: '[mySwipe]' })
export class SwipeDirective {
 @Output() public mySwipe = new EventEmitter<string>();

 private touchStartX;
 private touchStartY;
 @HostListener('touchstart', ['$event']) public onTouchStart(e) {
  this.touchStartX = e.changedTouches[0].clientX;
  this.touchStartY = e.changedTouches[0].clientY;
 }
 @HostListener('touchend', ['$event']) public onTouchEnd(e) {
  let moveX = e.changedTouches[0].clientX - this.touchStartX;
  let moveY = e.changedTouches[0].clientY - this.touchStartY;
  if (Math.abs(moveY) < Math.abs(moveX)) {
   /**
    * Y轴移动小于X轴 判定为横向滑动
    */
   if (moveX > 50) {
    this.mySwipe.emit('right');
   } else if (moveX < -50) {
    this.mySwipe.emit('left');
   }
  } else if (Math.abs(moveY) > Math.abs(moveX)) {
   /**
    * Y轴移动大于X轴 判定为纵向滑动
    */
   if (moveY > 50) {
    this.mySwipe.emit('down');
   } else if (moveY < -50) {
    this.mySwipe.emit('up');
   }
  }
  this.touchStartX = this.touchStartY = -1;
 }
}

@Output() public mySwipe = new EventEmitter<string>();