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niandeng
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package ckaction.style {
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import flash.display.Sprite;
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import ckaction.act.loadXml;
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import ckaction.act.script;
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public class track {
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private var THIS: Sprite = null;
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private var CFIG: Object = {};
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private var trackList: Array = [];
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private var trackIndex: int = 0;
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private var trackDelay:Number=0;
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private var nowTrackShow: Object = {
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sn: ""
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};
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private var trackElement: Array = [];
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private var time: Number = 0;
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private var isClose: Boolean = false;
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public function track(sp: Sprite, config: Object, file: String = "",trackD:Number=0) {
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if (!file) {
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return;
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}
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THIS = sp;
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CFIG = config;
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trackDelay=trackD;
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new loadXml(file, function (data: String) {
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if (isClose) {
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return;
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} else {
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if (data) {
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//trace(data);
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trackList = parseSrtSubtitles(data);
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//script.traceObject(trackList);
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}
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}
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});
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// constructor code
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}
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public function changeSize(n:int=0,m:int=0):void{
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CFIG["size"]=n;
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CFIG["leading"]=m;
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trackHide();
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trackShow(nowTrackShow);
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}
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public function sendTime(t: Number): void {
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if (isClose) {
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return;
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}
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time = t;
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if (trackIndex >= trackList.length) {
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trackIndex = 0;
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}
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var nowTrack: Object = trackList[trackIndex]; //当前编号对应的字幕内容
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if(nowTrack==null){
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return;
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}
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/*
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this.nowTrackShow=当前显示在界面上的内容
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如果当前时间正好在nowTrack时间内，则需要判断
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*/
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//trace(t,trackIndex,nowTrack["startTime"],nowTrack["endTime"]);
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if (t >= nowTrack["startTime"] && t <= nowTrack["endTime"]) {
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/*
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如果当前显示的内容不等于当前需要显示的内容时，则需要显示正确的内容
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*/
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var nowShow = nowTrackShow;
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if (nowShow["sn"] != nowTrack["sn"]) {
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trackHide();
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trackShow(nowTrack);
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}
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} else {
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/*
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* 如果当前播放时间不在当前编号字幕内，则需要先清空当前的字幕内容，再显示新的字幕内容
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*/
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//trace("重新计算编号");
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trackHide();
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checkTrack();
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}
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}
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//==========================================
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private function trackShow(track: Object) {
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if (isClose) {
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return;
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}
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nowTrackShow = track;
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var arr: Array = track["content"];
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for (var i: int = 0; i < arr.length; i++) {
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var tObj:Object=CFIG;
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tObj["type"]="text";
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tObj["text"]=arr[i];
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/*var tObj:Object={
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type: "text",
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text: arr[i],
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color: CFIG["color"],
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size: CFIG["size"],
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font: CFIG["font"],
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leading: CFIG["leading"],
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bold: CFIG["bold"],
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alpha: 1
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};*/
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//if(CFIG.hasOwnProperty("backgroundColor")){
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// tObj["backgroundColor"]=CFIG["backgroundColor"];
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//}
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var obj: Object = {
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list: [tObj],
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position: [1, 2, null, -(arr.length - i) * CFIG["leading"] - CFIG["marginBottom"]]
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};
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var ele: String = THIS["addElement"](obj);
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trackElement.push(ele);
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}
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}
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/*
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内部函数
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隐藏字字幕内容
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*/
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private function trackHide() {
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for (var i: int = 0; i < trackElement.length; i++) {
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THIS["deleteElement"](trackElement[i]);
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}
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trackElement = [];
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}
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/*
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内部函数
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重新计算字幕的编号
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*/
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private function checkTrack() {
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if (isClose) {
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return;
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}
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var num: int = trackIndex;
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var arr: Array = trackList;
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var i = 0;
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var have = false;
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for (i = num; i < arr.length; i++) {
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if (time >= arr[i]["startTime"] && time <= arr[i]["endTime"]) {
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trackIndex = i;
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//trace("新的编号：",time,trackIndex);
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have = true;
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break;
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}
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}
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if (!have) {
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trackIndex = 0;
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}
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}
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//=================================
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private function delHtmlTag(str: String) {
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return str.replace(/<[^>]+>/g, ""); //去掉所有的html标记
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}
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private function trim(str: String) {
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return str.replace(/(^\s*)|(\s*$)/g, "");
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}
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private function toSeconds(t: String) { //将时分秒转换成秒
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var s: int = 0.0;
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if (t) {
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var p: Array = t.split(":");
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for (var i: int = 0; i < p.length; i++) {
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s = s * 60 + parseFloat(p[i].replace(",", "."));
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}
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}
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return s;
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}
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private function parseSrtSubtitles(srt: String) {
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var subtitles: Array = [];
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var textSubtitles: Array = [];
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var i: int = 0;
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var arrs: Array = srt.split("\n");
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var arr: Array = [];
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for (i = 0; i < arrs.length; i++) {
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if (arrs[i].replace(/\s/g, "").length > 0) {
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arr.push(arrs[i]);
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} else {
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if (arr.length > 0) {
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textSubtitles.push(arr);
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}
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arr = [];
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}
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}
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for (i = 0; i < textSubtitles.length; ++i) {
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var textSubtitle: Array = textSubtitles[i];
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if (textSubtitle.length >= 2) {
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var sn: int = textSubtitle[0]; // 字幕的序号
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var startTime: Number = toSeconds(trim(textSubtitle[1].split(" --> ")[0])); // 字幕的开始时间
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var endTime: Number = toSeconds(trim(textSubtitle[1].split(" --> ")[1])); // 字幕的结束时间
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var content: Array = [delHtmlTag(textSubtitle[2])]; // 字幕的内容
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if(trackDelay!=0){
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startTime+=trackDelay;
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endTime+=trackDelay;
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}
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// 字幕可能有多行
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if (textSubtitle.length > 2) {
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for (var j = 3; j < textSubtitle.length; j++) {
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content.push(delHtmlTag(textSubtitle[j]));
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}
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}
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// 字幕对象
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var subtitle: Object = {
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sn: sn,
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startTime: startTime,
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endTime: endTime,
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content: content
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};
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subtitles.push(subtitle);
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}
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}
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return subtitles;
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}
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public function close(): void {
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trackHide();
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isClose=true;
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}
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}
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}
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