ニコニコ動画でコメントの盛り上がりをグラフで表示(html5版)
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// ==UserScript==
// @name HistogramHeatGraph_html5.user.js
// @namespace sotoba
// @version 1.0.1.20171119
// @description ニコニコ動画でコメントの盛り上がりをグラフで表示(html5版)
// @match http://www.nicovideo.jp/watch/*
// @include http://www.nicovideo.jp/watch/*
// @require https://code.jquery.com/jquery-3.2.1.min.js
// @grant none
// ==/UserScript==
(function () {
'use strict';
// default settings
var NicoHeatGraph = function(){
this.MINIMUMBARNUM=50;
this.DEFAULTINTERBAL=10;
this.MAXCOMMENTNUM=30;
this.GRAPHHEIGHT = 30;
this.GRAPHDEFWIDTH=1368;
this.barIndexNum=0;
this.$commentgraph=$('<div>').attr('id', 'comment-graph');
this.$commentlist=$('<div>').attr('id', 'comment-list');
};
//draw background of graph
NicoHeatGraph.prototype.drawCoordinate = function(){
const $commentgraph = this.$commentgraph;
const $commentlist = this.$commentlist;
let $canvas=$("#CommentRenderer").children('canvas').eq(0);
$('.PlayerContainer').eq(0).append($commentgraph);
$('.MainContainer').eq(0).append($commentlist);
const styleString = `
#comment-graph :hover{
-webkit-filter: hue-rotate(180deg);
filter: hue-rotate(180deg);
}
#comment-list:empty {
display: none;
}
`;
const style = document.createElement('style');
style.appendChild(document.createTextNode(styleString));
document.body.appendChild(style);
var playerWidth =parseFloat($canvas.css("width"))|this.GRAPHDEFWIDTH;
$commentgraph.height(this.GRAPHHEIGHT);
$commentgraph.width( playerWidth );
$commentgraph.css({
background:'repeating-linear-gradient(to top, #000, #111 5px)',
border: '1px solid #000',
borderTo: 0,
float: 'left',
fontSize: 0,
whiteSpace: 'nowrap',
});
$commentlist.css({
background: '#000',
color: '#fff',
fontSize: '12px',
lineHeight: 1.25,
padding: '4px 4px 0',
pointerEvents:' none',
position: 'absolute',
zIndex: 9999,
});
};
function getCommentData() {
var ApiJsonData=JSON.parse(document.getElementById('js-initial-watch-data').getAttribute('data-api-data'));
var thread_id;
var video_id;
var user_id;
if(ApiJsonData.video.dmcInfo !== null){
thread_id=ApiJsonData.video.dmcInfo.thread.thread_id;
video_id=ApiJsonData.video.dmcInfo.video.video_id;
user_id=ApiJsonData.video.dmcInfo.user.user_id;
}else{
thread_id=ApiJsonData.thread.ids.default;
video_id=ApiJsonData.video.id;
user_id=ApiJsonData.viewer.id;
}
if(video_id.startsWith('sm')||video_id.startsWith('nm')){
return $.ajax({
url:'http://nmsg.nicovideo.jp/api/thread?thread='+thread_id+'&version=20061206&res_from=-1000&scores=1',
type:'GET',
dataType:'xml'
});
}else{
return $.ajax({
url:'http://flapi.nicovideo.jp/api/getthreadkey?thread='+thread_id,
type:'GET',
}).then(function(response){
return $.ajax({
url:'http://nmsg.nicovideo.jp/api/thread?thread='+thread_id+'&version=20061206&res_from=-1000&scores=1&user='+user_id+'&'+response,
type:'GET',
dataType:'xml'
});
});
}
}
//draw bars make comment list
NicoHeatGraph.prototype.drowgraph = function(commentData,$canvas){
const $commentgraph = $('#comment-graph');
const $commentlist = $('#comment-list');
var ApiJsonData=JSON.parse(document.getElementById('js-initial-watch-data').getAttribute('data-api-data'));
var playerWidth =parseFloat($canvas.css("width"));
var videoTotalTime = ApiJsonData.video.dmcInfo !== null ? ApiJsonData.video.dmcInfo.video.length_seconds : ApiJsonData.video.duration;
var barTimeInterval;
//TODO 非常に長い（２，３時間以上）動画の処理
//長い動画
if(videoTotalTime > this.MINIMUMBARNUM*this.DEFAULTINTERBAL){
barTimeInterval=this.DEFAULTINTERBAL;
this.barIndexNum=Math.ceil(videoTotalTime / barTimeInterval);
//普通の動画
}else if(videoTotalTime>this.MINIMUMBARNUM){
this.barIndexNum=this.MINIMUMBARNUM;
barTimeInterval=videoTotalTime/this.MINIMUMBARNUM;
}else{
//MINIMUMBARNUM秒以下の短い動画
this.barIndexNum=Math.floor(videoTotalTime);
barTimeInterval=1;
}
$commentgraph.width( playerWidth );
const barColors = [
'003165', '00458f', '0058b5','005fc4', '006adb',
'0072ec', '007cff', '55a7ff','3d9bff'
];
var listCounts = (new Array(this.barIndexNum+1)).fill(0);
var listMessages = (new Array(this.barIndexNum+1)).fill("");
var listTimes = (new Array(this.barIndexNum+1)).fill("");
var lastBarTimeIntervalGap = Math.floor(videoTotalTime- (this.barIndexNum * barTimeInterval));
var barWidth = playerWidth / this.barIndexNum;
var barTimePoint = 0;
const MAXCOMMENTNUM=this.MAXCOMMENTNUM;
$(commentData).find('chat').each(function(index){
let vpos = $(this).attr('vpos')/100;
//動画長を超えた時間のpostがある
if (videoTotalTime<=vpos){
vpos=videoTotalTime;
}
let section=Math.floor(vpos/barTimeInterval);
listCounts[section]++;
if(listCounts[section]<= MAXCOMMENTNUM){
let comment=$(this).text().replace(/"|<|</g, ' ').replace(/\n/g, '<br>');
listMessages[section]+=comment+'<br>';
}
});
let starttime=0;
let nexttime=0;
for (var i = 0; i < this.barIndexNum; i++) {
starttime=nexttime;
nexttime+=barTimeInterval;
if(i==this.barIndexNum-1){
nexttime+=lastBarTimeIntervalGap;
}
let startmin=Math.floor(starttime/60);
let startsec=Math.floor(starttime-startmin*60);
let endmin=Math.floor(nexttime/60);
let endsec=Math.ceil(nexttime-endmin*60);
if(59 < endsec){
endmin+=1;
endsec-=60;
}
listTimes[i] += `${("0"+startmin).slice(-2)}:${("0"+startsec).slice(-2)}-${("0"+endmin).slice(-2)}:${("0"+endsec).slice(-2)}`;
}
// TODO なぜかthis.barIndexNum以上の配列ができる
listCounts=listCounts.slice(0, this.barIndexNum);
var listCountMax = Math.max.apply(null,listCounts);
const barColorRatio = (barColors.length - 1) / listCountMax;
$commentgraph.empty();
$commentgraph.height(this.GRAPHHEIGHT);
var barColor;
var barBackground;
for (i = 0; i < this.barIndexNum; i++) {
barColor = barColors[Math.floor(listCounts[i] * barColorRatio)];
barBackground = `linear-gradient(to top, #${barColor}, #${barColor} ` +
`${listCounts[i]}px, transparent ${listCounts[i]}px, transparent)`;
var barText = listCounts[i] ?
`${listMessages[i]}<br><br>${listTimes[i]} コメ ${listCounts[i]}` : '';
$('<div>')
.css('background-image', barBackground)
.css('float','left')
.data('text', barText)
.height(this.GRAPHHEIGHT)
.width(barWidth)
.addClass("commentbar")
.appendTo($commentgraph);
}
};
// set mouse functions
NicoHeatGraph.prototype.addMousefunc = function($canvas){
let $commentgraph = this.$commentgraph;
let $commentlist = this.$commentlist;
function mouseOverFunc() {
$commentlist.css({
'left': $(this).offset().left,
'top': $commentgraph.offset().top - $commentlist.height() - 10
})
.html($(this).data('text'));
}
function mouseOutFunc() {
$commentlist.empty();
}
$commentgraph.children().on({
'mouseenter': function(val) {
$commentlist.css({
'left': $(this).offset().left,
'top': $commentgraph.offset().top - $commentlist.height() - 10
})
.html($(this).data('text'));
},
'mousemove': function(val) {
$commentlist.offset({
'left': $(this).offset().left,
'top': $commentgraph.offset().top - $commentlist.height() - 10
});
},
'mouseleave': function() {
$commentlist.empty();
}
});
/* 1 Dom Style Watcher本体 監視する側*/
var domStyleWatcher = {
Start: function(tgt, styleobj){
function eventHappen(data1, data2){
var throwval = tgt.css(styleobj);
tgt.trigger('domStyleChange', [throwval]);
}
var tge = tgt[0];
var filter = ['style'];
var options = {
attributes: true,
attributeFilter: filter
};
var mutOb = new MutationObserver(eventHappen);
mutOb.observe(tge, options);
return mutOb;
},
Stop: function(mo){
mo.disconnect();
}
};
function catchEvent(event, value){
var playerWidth=parseFloat(value);
var barIndexNum=$('.commentbar').length;
$commentgraph.width(playerWidth);
$('.commentbar').width(playerWidth /barIndexNum);
}
var target = $canvas;
var styleobj = 'width';
target.on('domStyleChange', catchEvent);//イベントを登録
var dsw = domStyleWatcher.Start(target, styleobj);//監視開始
//domStyleWatcher.Stop(dsw);//監視終了
};
// Main
var heatgraph = new NicoHeatGraph();
heatgraph.drawCoordinate();
getCommentData().done(function(data, textStatus, jqXHR){
let canvas=$("#CommentRenderer").children('canvas').eq(0);
heatgraph.drowgraph(data,canvas);
heatgraph.addMousefunc(canvas);
}).fail(function(jqXHR, textStatus, errorThrown){
//TODO
console.log("failed");
});
})();