479 lines
13 KiB
JavaScript
479 lines
13 KiB
JavaScript
// performance.now() polyfill from https://gist.github.com/paulirish/5438650
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'use strict';
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( function () {
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// prepare base perf object
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if ( typeof window.performance === 'undefined' ) {
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window.performance = {};
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}
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if ( !window.performance.now ) {
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var nowOffset = Date.now();
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if ( performance.timing && performance.timing.navigationStart ) {
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nowOffset = performance.timing.navigationStart;
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}
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window.performance.now = function now () {
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return Date.now() - nowOffset;
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};
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}
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if( !window.performance.mark ) {
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window.performance.mark = function(){}
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}
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if( !window.performance.measure ) {
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window.performance.measure = function(){}
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}
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} )();
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/**
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* @class rStats
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* @param {rStats~Settings} [settings] Settings for the rStats instance.
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*/
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/**
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* @typedef {Object} rStats~Settings
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* @property {Array.<String>} [colours] An array of CSS colour values.
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* @property {String} [CSSPath=''] Base URL where rStats.css is located.
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* @property {Array.<String>} [css] URLs of CSS or font files to import.
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* @property {Object.<String, rStats~CounterProperties>} [values] Properties to use for each counter.
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* @property {Array.<Object>} [groups] Define groups of counters.
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* @property {Array.<Object>} [fractions] Define stacked counters.
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* @property {Array.<Object>} [plugins] Additional plugins.
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*/
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/**
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* @typedef {Object} rStats~CounterProperties
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* @property {String} [caption] Caption for this counter.
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* @property {Boolean} [average=false] Whether the values should be averaged.
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* @property {Number} [avgMs=1000] Duration for which the values should be averaged.
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* @property {Number} [below] Value below which the graph should be highlighted.
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* @property {Number} [over] Value over which the graph should be highlighted.
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* @property {Boolean} [interpolate=true] Whether framerate should be interpolated.
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*/
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window.rStats = function rStats ( settings ) {
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function iterateKeys ( array, callback ) {
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var keys = Object.keys( array );
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for ( var j = 0, l = keys.length; j < l; j++ ) {
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callback( keys[ j ] );
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}
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}
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function importCSS ( url ) {
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var element = document.createElement( 'link' );
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element.href = url;
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element.rel = 'stylesheet';
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element.type = 'text/css';
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document.getElementsByTagName( 'head' )[ 0 ].appendChild( element );
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}
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var _settings = settings || {};
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var _colours = _settings.colours || [ '#850700', '#c74900', '#fcb300', '#284280', '#4c7c0c' ];
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var _cssFont = 'https://fonts.googleapis.com/css?family=Roboto+Condensed:400,700,300';
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var _cssRStats = ( _settings.CSSPath ? _settings.CSSPath : '' ) + 'rStats.css';
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var _css = _settings.css || [ _cssFont, _cssRStats ];
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_css.forEach(function (uri) {
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importCSS( uri );
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});
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if ( !_settings.values ) _settings.values = {};
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var _base, _div, _elHeight = 10, _elWidth = 200;
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var _perfCounters = {};
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function Graph ( _dom, _id, _defArg ) {
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var _def = _defArg || {};
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var _canvas = document.createElement( 'canvas' ),
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_ctx = _canvas.getContext( '2d' ),
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_max = 0,
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_current = 0;
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var c = _def.color ? _def.color : '#666666';
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var _dotCanvas = document.createElement( 'canvas' ),
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_dotCtx = _dotCanvas.getContext( '2d' );
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_dotCanvas.width = 1;
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_dotCanvas.height = 2 * _elHeight;
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_dotCtx.fillStyle = '#444444';
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_dotCtx.fillRect( 0, 0, 1, 2 * _elHeight );
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_dotCtx.fillStyle = c;
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_dotCtx.fillRect( 0, _elHeight, 1, _elHeight );
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_dotCtx.fillStyle = '#ffffff';
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_dotCtx.globalAlpha = 0.5;
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_dotCtx.fillRect( 0, _elHeight, 1, 1 );
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_dotCtx.globalAlpha = 1;
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var _alarmCanvas = document.createElement( 'canvas' ),
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_alarmCtx = _alarmCanvas.getContext( '2d' );
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_alarmCanvas.width = 1;
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_alarmCanvas.height = 2 * _elHeight;
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_alarmCtx.fillStyle = '#444444';
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_alarmCtx.fillRect( 0, 0, 1, 2 * _elHeight );
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_alarmCtx.fillStyle = '#b70000';
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_alarmCtx.fillRect( 0, _elHeight, 1, _elHeight );
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_alarmCtx.globalAlpha = 0.5;
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_alarmCtx.fillStyle = '#ffffff';
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_alarmCtx.fillRect( 0, _elHeight, 1, 1 );
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_alarmCtx.globalAlpha = 1;
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function _init () {
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_canvas.width = _elWidth;
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_canvas.height = _elHeight;
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_canvas.style.width = _canvas.width + 'px';
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_canvas.style.height = _canvas.height + 'px';
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_canvas.className = 'rs-canvas';
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_dom.appendChild( _canvas );
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_ctx.fillStyle = '#444444';
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_ctx.fillRect( 0, 0, _canvas.width, _canvas.height );
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}
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function _draw ( v, alarm ) {
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_current += ( v - _current ) * 0.1;
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_max *= 0.99;
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if ( _current > _max ) _max = _current;
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_ctx.drawImage( _canvas, 1, 0, _canvas.width - 1, _canvas.height, 0, 0, _canvas.width - 1, _canvas.height );
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if ( alarm ) {
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_ctx.drawImage( _alarmCanvas, _canvas.width - 1, _canvas.height - _current * _canvas.height / _max - _elHeight );
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} else {
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_ctx.drawImage( _dotCanvas, _canvas.width - 1, _canvas.height - _current * _canvas.height / _max - _elHeight );
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}
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}
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_init();
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return {
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draw: _draw
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};
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}
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function StackGraph ( _dom, _num ) {
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var _canvas = document.createElement( 'canvas' ),
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_ctx = _canvas.getContext( '2d' );
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function _init () {
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_canvas.width = _elWidth;
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_canvas.height = _elHeight * _num;
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_canvas.style.width = _canvas.width + 'px';
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_canvas.style.height = _canvas.height + 'px';
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_canvas.className = 'rs-canvas';
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_dom.appendChild( _canvas );
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_ctx.fillStyle = '#444444';
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_ctx.fillRect( 0, 0, _canvas.width, _canvas.height );
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}
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function _draw ( v ) {
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_ctx.drawImage( _canvas, 1, 0, _canvas.width - 1, _canvas.height, 0, 0, _canvas.width - 1, _canvas.height );
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var th = 0;
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iterateKeys( v, function ( j ) {
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var h = v[ j ] * _canvas.height;
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_ctx.fillStyle = _colours[ j ];
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_ctx.fillRect( _canvas.width - 1, th, 1, h );
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th += h;
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} );
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}
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_init();
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return {
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draw: _draw
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};
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}
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function PerfCounter ( id, group ) {
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var _id = id,
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_time,
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_value = 0,
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_total = 0,
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_averageValue = 0,
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_accumValue = 0,
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_accumStart = performance.now(),
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_accumSamples = 0,
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_dom = document.createElement( 'div' ),
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_spanId = document.createElement( 'span' ),
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_spanValue = document.createElement( 'div' ),
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_spanValueText = document.createTextNode( '' ),
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_def = _settings ? _settings.values[ _id.toLowerCase() ] : null,
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_graph = new Graph( _dom, _id, _def ),
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_started = false;
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_spanId.className = 'rs-counter-id';
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_spanId.textContent = ( _def && _def.caption ) ? _def.caption : _id;
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_spanValue.className = 'rs-counter-value';
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_spanValue.appendChild( _spanValueText );
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_dom.appendChild( _spanId );
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_dom.appendChild( _spanValue );
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if ( group ) group.div.appendChild( _dom );
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else _div.appendChild( _dom );
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_time = performance.now();
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function _average ( v ) {
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if ( _def && _def.average ) {
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_accumValue += v;
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_accumSamples++;
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var t = performance.now();
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if ( t - _accumStart >= ( _def.avgMs || 1000 ) ) {
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_averageValue = _accumValue / _accumSamples;
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_accumValue = 0;
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_accumStart = t;
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_accumSamples = 0;
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}
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}
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}
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function _start () {
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_time = performance.now();
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if( _settings.userTimingAPI ) performance.mark( _id + '-start' );
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_started = true;
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}
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function _end () {
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_value = performance.now() - _time;
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if( _settings.userTimingAPI ) {
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performance.mark( _id + '-end' );
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if( _started ) {
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performance.measure( _id, _id + '-start', _id + '-end' );
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}
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}
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_average( _value );
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}
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function _tick () {
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_end();
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_start();
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}
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function _draw () {
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var v = ( _def && _def.average ) ? _averageValue : _value;
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_spanValueText.nodeValue = Math.round( v * 100 ) / 100;
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var a = ( _def && ( ( _def.below && _value < _def.below ) || ( _def.over && _value > _def.over ) ) );
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_graph.draw( _value, a );
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_dom.className = a ? 'rs-counter-base alarm' : 'rs-counter-base';
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}
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function _frame () {
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var t = performance.now();
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var e = t - _time;
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_total++;
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if ( e > 1000 ) {
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if ( _def && _def.interpolate === false ) {
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_value = _total;
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} else {
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_value = _total * 1000 / e;
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}
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_total = 0;
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_time = t;
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_average( _value );
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}
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}
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function _set ( v ) {
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_value = v;
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_average( _value );
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}
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return {
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set: _set,
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start: _start,
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tick: _tick,
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end: _end,
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frame: _frame,
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value: function () {
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return _value;
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},
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draw: _draw
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};
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}
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function sample () {
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var _value = 0;
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function _set ( v ) {
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_value = v;
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}
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return {
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set: _set,
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value: function () {
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return _value;
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}
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};
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}
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function _perf ( idArg ) {
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var id = idArg.toLowerCase();
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if ( id === undefined ) id = 'default';
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if ( _perfCounters[ id ] ) return _perfCounters[ id ];
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var group = null;
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if ( _settings && _settings.groups ) {
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iterateKeys( _settings.groups, function ( j ) {
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var g = _settings.groups[ parseInt( j, 10 ) ];
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if ( !group && g.values.indexOf( id.toLowerCase() ) !== -1 ) {
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group = g;
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}
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} );
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}
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var p = new PerfCounter( id, group );
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_perfCounters[ id ] = p;
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return p;
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}
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function _init () {
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if ( _settings.plugins ) {
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if ( !_settings.values ) _settings.values = {};
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if ( !_settings.groups ) _settings.groups = [];
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if ( !_settings.fractions ) _settings.fractions = [];
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for ( var j = 0; j < _settings.plugins.length; j++ ) {
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_settings.plugins[ j ].attach( _perf );
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iterateKeys( _settings.plugins[ j ].values, function ( k ) {
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_settings.values[ k ] = _settings.plugins[ j ].values[ k ];
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} );
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_settings.groups = _settings.groups.concat( _settings.plugins[ j ].groups );
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_settings.fractions = _settings.fractions.concat( _settings.plugins[ j ].fractions );
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}
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} else {
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_settings.plugins = {};
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}
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_base = document.createElement( 'div' );
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_base.className = 'rs-base';
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_div = document.createElement( 'div' );
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_div.className = 'rs-container';
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_div.style.height = 'auto';
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_base.appendChild( _div );
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document.body.appendChild( _base );
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if ( !_settings ) return;
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if ( _settings.groups ) {
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iterateKeys( _settings.groups, function ( j ) {
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var g = _settings.groups[ parseInt( j, 10 ) ];
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var div = document.createElement( 'div' );
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div.className = 'rs-group';
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g.div = div;
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var h1 = document.createElement( 'h1' );
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h1.textContent = g.caption;
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h1.addEventListener( 'click', function ( e ) {
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this.classList.toggle( 'hidden' );
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e.preventDefault();
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}.bind( div ) );
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_div.appendChild( h1 );
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_div.appendChild( div );
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} );
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}
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if ( _settings.fractions ) {
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iterateKeys( _settings.fractions, function ( j ) {
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var f = _settings.fractions[ parseInt( j, 10 ) ];
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var div = document.createElement( 'div' );
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div.className = 'rs-fraction';
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var legend = document.createElement( 'div' );
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legend.className = 'rs-legend';
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var h = 0;
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iterateKeys( _settings.fractions[ j ].steps, function ( k ) {
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var p = document.createElement( 'p' );
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p.textContent = _settings.fractions[ j ].steps[ k ];
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p.style.color = _colours[ h ];
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legend.appendChild( p );
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h++;
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} );
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div.appendChild( legend );
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div.style.height = h * _elHeight + 'px';
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f.div = div;
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var graph = new StackGraph( div, h );
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f.graph = graph;
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_div.appendChild( div );
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} );
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}
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}
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function _update () {
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iterateKeys( _settings.plugins, function ( j ) {
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_settings.plugins[ j ].update();
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} );
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iterateKeys( _perfCounters, function ( j ) {
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_perfCounters[ j ].draw();
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} );
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if ( _settings && _settings.fractions ) {
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iterateKeys( _settings.fractions, function ( j ) {
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var f = _settings.fractions[ parseInt( j, 10 ) ];
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var v = [];
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var base = _perfCounters[ f.base.toLowerCase() ];
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if ( base ) {
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base = base.value();
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iterateKeys( _settings.fractions[ j ].steps, function ( k ) {
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var s = _settings.fractions[ j ].steps[ parseInt( k, 10 ) ].toLowerCase();
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var val = _perfCounters[ s ];
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if ( val ) {
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v.push( val.value() / base );
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}
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} );
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}
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f.graph.draw( v );
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} );
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}
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/*if( _height != _div.clientHeight ) {
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_height = _div.clientHeight;
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_base.style.height = _height + 2 * _elHeight + 'px';
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console.log( _base.clientHeight );
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}*/
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}
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_init();
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return function ( id ) {
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if ( id ) return _perf( id );
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return {
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element: _base,
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update: _update
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};
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};
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}
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if (typeof module === 'object') {
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module.exports = window.rStats;
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}
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