Angular animations animation exercises

Angular2’s animation system gives you the ability to create various animation effects, and is committed to building animations with the same performance as native CSS animations.
Angular2 animation is mainly combined with @Component.
animations metadata attributes are defined in the @Component decoration. Just like template metadata attributes! This allows the animation logic to be tightly integrated with its application code, making it easier to start and control the animation.

Callback function

The callback method is also very simple, as follows:

  <p *ngIf="Group" style="height: 100px;width: 100px;background-color: black; border-radius: 50px;"
       [@GroupAnimate]="boxState" (@GroupAnimate.done)="Callback(false)" (@GroupAnimate.start)="Callback(true)">
  </p>


  Callback(f:boolean){
    if(f){
      console.log("动画开始");
    }else {
      console.log("动画结束");
    }
  }

query

The usage is roughly the same as the css selector. Different elements can achieve different animation effects through query.

/*
query选择器演示
用法和css选择器大致相同
 */
export const QueryAnimate = trigger('QueryAnimate',[
    transition('off=>on', [
      // 先全部隐藏
      query('p', style({ opacity: 0 })),
      // 再执行动画
      query('.box-top', animate('500ms',keyframes([
        style({opacity: 0, transform: 'translateY(-400%)', offset: 0}),
        style({opacity: 1, transform: 'translateY(0)',     offset: 1.0})
      ]) )),
      query('.box-center', animate('500ms',keyframes([
        style({opacity: 0, transform: 'translateX(-400%)', offset: 0}),
        style({opacity: 1, transform: 'translateX(0)',     offset: 1.0})
      ]) )),
      query('.box-foot', animate('500ms',keyframes([
        style({opacity: 0, transform: 'translateY(400%)', offset: 0}),
        style({opacity: 1, transform: 'translateY(0)',     offset: 1.0})
      ]) )),
      query('h2', animate('500ms',keyframes([
        style({transform:'scale(0.5)'}),
        style({transform: 'scale(1)'})
      ]) )),
    ]),
    transition('on=>off', [
      query('.box-top', animate('500ms',keyframes([
        style({opacity: 1, transform: 'translateY(0)'}),
        style({opacity: 0, transform: 'translateY(-400%)'})
      ]) )),
      query('.box-center', animate('500ms',keyframes([
        style({opacity: 1, transform: 'translateX(0)'}),
        style({opacity: 0, transform: 'translateX(-400%)'})
      ]) )),
      query('.box-foot', animate('500ms',keyframes([
        style({opacity: 1, transform: 'translateY(0)'}),
        style({opacity: 0, transform: 'translateY(400%)'})
      ]) )),
      query('h2', animate('500ms',keyframes([
        style({transform:'scale(1)'}),
        style({transform: 'scale(0.5)'})
      ]) )),
    ])
  ]);

Related recommendations;

transform, transition and animations in CSS3 Detailed examples of the differences between the three attributes

Tutorial on using css animation animation

animation implementation of animation that makes clouds float

The above is the detailed content of Angular animations animation exercises. For more information, please follow other related articles on the PHP Chinese website!