如何使用/启用动画图标? [英] How to use/enable animated icons?

问题描述

有谁知道如何在 Angular Web 应用程序中使用/启用动画图标，这些图标显示在材料设计文档中:https://material.io/design/iconography/animated-icons.html#usage

Does anybody know how to use/enable the animated icons in an Angular Web Application which are shown in the material design documentation: https://material.io/design/iconography/animated-icons.html#usage

推荐答案

正如其他人所说，必须构建 Material Icon 站点上的示例.

As other have stated the examples on the Material Icon sites would have to be built.

但是，我找到了解决这个问题的方法，以寻找有关如何为角材质图标设置动画的指南，而对于其他正在寻找相同问题的指南，我有一个解决方案.可以自定义默认动画，而不仅仅是 360 度旋转.

However, I found my way to this question looking for a guide on how to animate angular material icons and for others looking for the same I have a solution. The default animation can be customized to something other than just a 360 degree rotation.

基本上，您可以创建一个组件，该组件在单击时或单击按钮等父元素时在 ma​​t-icon 之间交换.

Basically you can create a component that swaps between mat-icon's when clicked or when a parent element like a button is clicked.

先决条件是您有一个安装了材料图标的角度材料应用程序.我使用了 Angular Material 8.

Prerequisites are you have a an angular material application with material icons installed. I used Angular Material 8.

这是一个有效的 Stackblitz https://stackblitz.com/edit/angular-material-prototype-animated-icon

Here is a working Stackblitz https://stackblitz.com/edit/angular-material-prototype-animated-icon

ma​​t-animated-icon.component.ts

import { Component, Input, OnInit } from '@angular/core';

@Component({
  selector: 'mat-animated-icon',
  templateUrl: './mat-animated-icon.component.html',
  styleUrls: ['./mat-animated-icon.component.scss']
})
export class MatAnimatedIconComponent implements OnInit {

  @Input() start: String;
  @Input() end: String;
  @Input() colorStart: String;
  @Input() colorEnd: String;
  @Input() animate: boolean;
  @Input() animateFromParent?: boolean = false;

  constructor() { }

  ngOnInit() {
    console.log(this.colorStart);
    console.log(this.colorEnd);
  }

  toggle() {
    if(!this.animateFromParent) this.animate = !this.animate;
  }

}

ma​​t-animated-icon.component.scss

:host {
  font-family: 'Material Icons';
  font-weight: normal;
  font-style: normal;
  font-size: 24px;  /* Preferred icon size */
  display: inline-block;
  line-height: 1;
  text-transform: none;
  letter-spacing: normal;
  word-wrap: normal;
  white-space: nowrap;
  direction: ltr;

  /* Support for all WebKit browsers. */
  -webkit-font-smoothing: antialiased;
  /* Support for Safari and Chrome. */
  text-rendering: optimizeLegibility;

  /* Support for Firefox. */
  -moz-osx-font-smoothing: grayscale;

  /* Support for IE. */
  font-feature-settings: 'liga';

  /* Rules for sizing the icon. */
  &.md-18 { font-size: 18px; }
  &.md-24 { font-size: 24px; }
  &.md-36 { font-size: 36px; }
  &.md-48 { font-size: 48px; }

  /* Rules for using icons as black on a light background. */
  &.md-dark { 
    color: rgba(0, 0, 0, 0.54);

    &.md-inactive { color: rgba(0, 0, 0, 0.26); }
  }

  /* Rules for using icons as white on a dark background. */
  &.md-light { 
    color: rgba(255, 255, 255, 1);

    &.md-inactive { color: rgba(255, 255, 255, 0.3); }
  }

  .material-icons {
    transition: transform .5s;
    &.animate {
      transform: rotate(360deg);
    }
  }
}

ma​​t-animated-icon.component.html

<mat-icon [ngClass]="{'animate' : animate}" color="{{animate ? colorEnd : colorStart}}" (click)="toggle()">{{animate ? end : start}}</mat-icon>

var.directive.ts

一个小辅助指令

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

@Directive({
  selector: '[var]',
  exportAs: 'var'
})
export class VarDirective {

  @Input() var:any;

  constructor() { }

}

正在使用的组件示例

<button (click)="!this.disabled && iconAnimate10.var=!iconAnimate10.var" #iconAnimate10="var" var="'false'" mat-icon-button [disabled]="false" aria-label="Example icon-button with a heart icon">
<mat-animated-icon start="menu" end="close" colorStart="none" colorEnd="none" [animate]="iconAnimate10.var" animateFromParent="true"></mat-animated-icon>

这篇关于如何使用/启用动画图标?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！