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svga-egret

v1.0.4

Published

预览svga动画网址 http://svga.io/svga-preview.html

Downloads

28

Readme

SVGAPlayer-egret

预览svga动画网址 http://svga.io/svga-preview.html

修改自原github项目 https://github.com/yyued/SVGAPlayer-Web

专门为egret使用svga动画的扩展类EgretMovieClip

npm使用

npm install svga-egret
import {Parser,EgretMovieClip}from "svga-egret"

网页使用 注意得在白鹭的js后加下面脚本(因为继承了egret.DisplayObjectContainer)

<script src="libs/svga.egret.min.js"></script>

代码示例

var parser = new SVGA.Parser();
parser.load("../egret/loading五神兽最终版.svga", (videoItem) => {
    //具体用法SVGA.d.ts文件有
    var mv = new SVGA.EgretMovieClip(videoItem)
    // mv.lockStep=true;
    // mv.play()
    // mv.gotoAndPlay(30, true)
    // mv.gotoAndStop(10)
    // mv.startAniRange
    mv.gotoAndPlay(1, true)
    this.addChild(mv);
    let fun
    mv.addEventListener(egret.Event.COMPLETE, fun = function () {
            console.log("播放完成")
            // mv.removeEventListener(egret.Event.COMPLETE,fun,this)
            // mv.stop()
            // mv.startAniRange(30,60);
        }, this)
    }, function (error) {
     alert(error.message);
})

使用指南(原生形式使用)

原生canvas形式使用,

手动加载

添加 <script src="https://cdn.jsdelivr.net/npm/[email protected]/build/svga.min.js"></script> 到 your.html 页面

你可以自行创建 Player 和 Parser 并加载动画

  1. 添加 Div 容器
<div id="demoCanvas" style="styles..."></div>
  1. 加载动画
var player = new SVGA.Player('#demoCanvas');
var parser = new SVGA.Parser('#demoCanvas'); // 如果你需要支持 IE6+,那么必须把同样的选择器传给 Parser。
parser.load('rose_2.0.0.svga', function(videoItem) {
    player.setVideoItem(videoItem);
    player.startAnimation();
})

自动加载

为 canvas 元素添加以下属性

<div src="rose_2.0.0.svga" loops="0" clearsAfterStop="true" style="styles..."></div>

动画会在页面加载完成后播放

动态图像

你可以动态替换动画中的指定元素,询问你的动画设计师以获取 ImageKey。

  • 用于替换的图片,宽、高必须与原图一致。
  • setImage 操作必须在 startAnimation 之前执行。
player.setImage('http://yourserver.com/xxx.png', 'ImageKey');

动态文本

你可以在指定元素上添加文本,询问你的动画设计师以获取 ImageKey。

  • setText 操作必须在 startAnimation 之前执行。
player.setText('Hello, World!', 'ImageKey');
player.setText({ 
    text: 'Hello, World!, 
    size: "24px", 
    color: "#ffe0a4",
    offset: {x: 0.0, y: 0.0}
}, 'ImageKey'); // 可自定义文本样式

Classes

SVGA.Player

SVGA.Player 用于控制动画的播放和停止

Properties

  • int loops; - 动画循环次数,默认值为 0,表示无限循环。
  • BOOL clearsAfterStop; - 默认值为 true,表示当动画结束时,清空画布。
  • string fillMode; - 默认值为 Forward,可选值 Forward / Backward,当 clearsAfterStop 为 false 时,Forward 表示动画会在结束后停留在最后一帧,Backward 则会在动画结束后停留在第一帧。

Methods

  • constructor (canvas); - 传入 #id 或者 CanvasHTMLElement 至第一个参数
  • startAnimation(reverse: boolean = false); - 从第 0 帧开始播放动画
  • startAnimationWithRange(range: {location: number, length: number}, reverse: boolean = false); - 播放 [location, location+length] 指定区间帧动画
  • pauseAnimation(); - 暂停在当前帧
  • stopAnimation(); - 停止播放动画,如果 clearsAfterStop === true,将会清空画布
  • setContentMode(mode: "ScaleToFill" | "AspectFill" | "AspectFit"); - 设置动画的拉伸模式
  • setClipsToBounds(clipsToBounds: boolean); - 如果超出盒子边界,将会进行裁剪
  • clear(); - 强制清空画布
  • stepToFrame(frame: int, andPlay: Boolean); - 跳到指定帧,如果 andPlay === true,则在指定帧开始播放动画
  • stepToPercentage(percentage: float, andPlay: Boolean); - 跳到指定百分比,如果 andPlay === true,则在指定百分比开始播放动画
  • setImage(image: string, forKey: string, transform: [a, b, c, d, tx, ty]); - 设定动态图像, transform 是可选的, transform 用于变换替换图片
  • setText(text: string | {text: string, font: string, size: string, color: string, offset: {x: float, y: float}}, forKey: string); - 设定动态文本
  • clearDynamicObjects(); - 清空所有动态图像和文本

Callback Method

  • onFinished(callback: () => void): void; - 动画停止播放时回调
  • onFrame(callback: (frame: number): void): void; - 动画播放至某帧后回调
  • onPercentage(callback: (percentage: number): void): void; - 动画播放至某进度后回调

SVGA.Parser

SVGA.Parser 用于加载远端或 Base64 动画,并转换成 VideoItem。

跨域的 SVGA 资源需要使用 CORS 协议才能加载成功。

如果你需要加载 Base64 资源,或者 File 资源,这样传递就可以了 load(File)load('data:svga/2.0;base64,xxxxxx')

Methods

  • constructor();
  • load(url: string, success: (videoItem: VideoEntity) => void, failure: (error: Error) => void): void;

Issues

Android 4.x 加载失败

某些 Android 4.x OS 上缺少 Blob 支持,请自行添加 Polyfill。

<script src="//cdn.bootcss.com/blob-polyfill/1.0.20150320/Blob.min.js"></script>

支持 SVGA-Format 1.x 格式

如果你需要播放 1.x 格式的 SVGA 文件,需要添加 JSZip 到你的 HTML 页面中。

<script src="//s1.yy.com/ued_web_static/lib/jszip/3.1.4/??jszip.min.js,jszip-utils.min.js" charset="utf-8"></script>