forked from cory/tildefriends
Remove the smoothie graphs. The sparklines are too good. I will rebuild whatever I'm missing with these.
git-svn-id: https://www.unprompted.com/svn/projects/tildefriends/trunk@4375 ed5197a5-7fde-0310-b194-c3ffbd925b24
This commit is contained in:
@@ -7,8 +7,6 @@ let gFiles = {};
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let gApp = {files: {}, emoji: '📦'};
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let gApp = {files: {}, emoji: '📦'};
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let gEditor;
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let gEditor;
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let gSplit;
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let gSplit;
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let gGraphs = {};
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let gTimeSeries = {};
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let gOriginalInput;
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let gOriginalInput;
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let kErrorColor = "#dc322f";
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let kErrorColor = "#dc322f";
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@@ -431,24 +429,6 @@ function trace() {
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window.open(`/speedscope/#profileURL=${encodeURIComponent('/trace')}`);
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window.open(`/speedscope/#profileURL=${encodeURIComponent('/trace')}`);
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}
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}
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function stats() {
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window.localStorage.setItem('stats', '1');
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document.getElementById("statsPane").style.display = 'flex';
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}
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function closeStats() {
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window.localStorage.setItem('stats', '0');
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document.getElementById("statsPane").style.display = 'none';
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}
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function toggleStats() {
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if (document.getElementById("statsPane").style.display == 'none') {
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stats();
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} else {
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closeStats();
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}
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}
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function guessMode(name) {
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function guessMode(name) {
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return name.endsWith(".js") ? "javascript" :
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return name.endsWith(".js") ? "javascript" :
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name.endsWith(".html") ? "htmlmixed" :
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name.endsWith(".html") ? "htmlmixed" :
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@@ -804,57 +784,6 @@ function _receive_websocket_message(message) {
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};
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};
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const k_colors = ['#0f0', '#88f', '#ff0', '#f0f', '#0ff', '#f00', '#888'];
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const k_colors = ['#0f0', '#88f', '#ff0', '#f0f', '#0ff', '#f00', '#888'];
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let graph_key = k_groups[key]?.group || key;
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let graph_key = k_groups[key]?.group || key;
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let graph = gGraphs[graph_key];
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if (!graph) {
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graph = {
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chart: new SmoothieChart({
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millisPerPixel: 100,
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minValue: 0,
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grid: {
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millisPerLine: 1000,
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verticalSections: 10,
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},
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tooltip: true,
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}),
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canvas: document.createElement('canvas'),
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title: document.createElement('div'),
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series: [],
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};
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gGraphs[graph_key] = graph;
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graph.canvas.width = 240;
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graph.canvas.height = 64;
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graph.title.innerText = graph_key;
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graph.title.style.flex = '0';
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document.getElementById('graphs').appendChild(graph.title);
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document.getElementById('graphs').appendChild(graph.canvas);
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graph.chart.streamTo(graph.canvas, 1000);
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}
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let timeseries = gTimeSeries[key];
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if (!timeseries) {
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let is_multi = key != graph_key || graph.series.length > 1;
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timeseries = new TimeSeries();
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gTimeSeries[key] = timeseries;
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graph.chart.addTimeSeries(timeseries, {lineWidth: 2, strokeStyle: is_multi ? k_colors[graph.series.length] : '#fff'});
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graph.series.push(k_groups[key]?.name || key);
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if (is_multi) {
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while (graph.title.firstChild) {
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graph.title.removeChild(graph.title.firstChild);
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}
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function makeColoredText(text, color) {
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let element = document.createElement('span');
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element.style.color = color;
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element.innerText = text;
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return element;
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}
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graph.title.appendChild(makeColoredText(graph_key + ':', '#fff'));
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for (let series of graph.series) {
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graph.title.appendChild(makeColoredText(' ' + series, k_colors[graph.series.indexOf(series)]));
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}
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}
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}
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timeseries.append(now, message.stats[key]);
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if (graph_key == 'cpu' || graph_key == 'rpc' || graph_key == 'store') {
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if (graph_key == 'cpu' || graph_key == 'rpc' || graph_key == 'store') {
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let line = document.getElementsByTagName('tf-navigation')[0].get_spark_line(graph_key, { max: 100 });
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let line = document.getElementsByTagName('tf-navigation')[0].get_spark_line(graph_key, { max: 100 });
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line.dataset.emoji = {
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line.dataset.emoji = {
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@@ -1154,7 +1083,6 @@ window.addEventListener("load", function() {
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window.addEventListener("message", message, false);
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window.addEventListener("message", message, false);
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window.addEventListener("online", connectSocket);
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window.addEventListener("online", connectSocket);
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document.getElementById("name").value = window.location.pathname;
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document.getElementById("name").value = window.location.pathname;
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document.getElementById('closeStats').addEventListener('click', () => closeStats());
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document.getElementById('closeEditor').addEventListener('click', () => closeEditor());
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document.getElementById('closeEditor').addEventListener('click', () => closeEditor());
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document.getElementById('save').addEventListener('click', () => save());
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document.getElementById('save').addEventListener('click', () => save());
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document.getElementById('icon').addEventListener('click', () => changeIcon());
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document.getElementById('icon').addEventListener('click', () => changeIcon());
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@@ -1163,10 +1091,6 @@ window.addEventListener("load", function() {
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event.preventDefault();
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event.preventDefault();
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trace();
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trace();
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});
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});
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document.getElementById('stats_button').addEventListener('click', function(event) {
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event.preventDefault();
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toggleStats();
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});
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for (let tag of document.getElementsByTagName('a')) {
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for (let tag of document.getElementsByTagName('a')) {
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if (tag.accessKey) {
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if (tag.accessKey) {
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tag.classList.add('tooltip_parent');
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tag.classList.add('tooltip_parent');
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@@ -1199,9 +1123,4 @@ window.addEventListener("load", function() {
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} else {
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} else {
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closeEditor();
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closeEditor();
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}
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}
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if (window.localStorage.getItem('stats') == '1') {
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stats();
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} else {
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closeStats();
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}
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});
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});
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@@ -936,8 +936,6 @@ loadSettings().then(function() {
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return staticDirectoryHandler(request, response, 'deps/speedscope/', match[1]);
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return staticDirectoryHandler(request, response, 'deps/speedscope/', match[1]);
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} else if (match = /^\/split\/([\.\w-/]*)$/.exec(request.uri)) {
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} else if (match = /^\/split\/([\.\w-/]*)$/.exec(request.uri)) {
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return staticDirectoryHandler(request, response, 'deps/split/', match[1]);
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return staticDirectoryHandler(request, response, 'deps/split/', match[1]);
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} else if (match = /^\/smoothie\/([\.\w-/]*)$/.exec(request.uri)) {
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return staticDirectoryHandler(request, response, 'deps/smoothie/', match[1]);
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} else if (match = /^\/static(\/.*)/.exec(request.uri)) {
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} else if (match = /^\/static(\/.*)/.exec(request.uri)) {
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return staticFileHandler(request, response, null, match[1]);
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return staticFileHandler(request, response, null, match[1]);
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} else if (request.uri == "/robots.txt") {
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} else if (request.uri == "/robots.txt") {
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@@ -9,12 +9,6 @@
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<body style="display: flex; flex-flow: column">
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<body style="display: flex; flex-flow: column">
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<tf-navigation></tf-navigation>
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<tf-navigation></tf-navigation>
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<div id="content" class="hbox" style="flex: 1 1; width: 100%">
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<div id="content" class="hbox" style="flex: 1 1; width: 100%">
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<div id="statsPane" class="vbox" style="display: none; flex 1 1">
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<div class="hbox">
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<input type="button" id="closeStats" name="closeStats" value="Close">
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</div>
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<div id="graphs" class="vbox" style="height: 100%"></div>
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</div>
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<div id="editPane" class="vbox" style="display: none">
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<div id="editPane" class="vbox" style="display: none">
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<div class="navigation hbox">
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<div class="navigation hbox">
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<input type="button" id="closeEditor" name="closeEditor" value="Close">
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<input type="button" id="closeEditor" name="closeEditor" value="Close">
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@@ -23,7 +17,6 @@
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<input type="text" id="name" name="name" style="flex: 1 1; min-width: 1em"></input>
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<input type="text" id="name" name="name" style="flex: 1 1; min-width: 1em"></input>
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<input type="button" id="delete" name="delete" value="Delete">
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<input type="button" id="delete" name="delete" value="Delete">
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<input type="button" id="trace_button" value="Trace">
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<input type="button" id="trace_button" value="Trace">
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<input type="button" id="stats_button" value="Stats">
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</div>
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</div>
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<div class="hbox" style="height: 100%">
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<div class="hbox" style="height: 100%">
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<tf-files-pane></tf-files-pane>
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<tf-files-pane></tf-files-pane>
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@@ -40,7 +33,6 @@
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</div>
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</div>
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<script>window.litDisableBundleWarning = true;</script>
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<script>window.litDisableBundleWarning = true;</script>
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<script src="/split/split.min.js"></script>
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<script src="/split/split.min.js"></script>
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<script src="/smoothie/smoothie.js"></script>
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||||||
<script src="/static/client.js" type="module"></script>
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<script src="/static/client.js" type="module"></script>
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</body>
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</body>
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</html>
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</html>
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968
deps/smoothie/smoothie.js
vendored
968
deps/smoothie/smoothie.js
vendored
@@ -1,968 +0,0 @@
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// MIT License:
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//
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// Copyright (c) 2010-2013, Joe Walnes
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// 2013-2017, Drew Noakes
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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||||||
// of this software and associated documentation files (the "Software"), to deal
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||||||
// in the Software without restriction, including without limitation the rights
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||||||
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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||||||
// copies of the Software, and to permit persons to whom the Software is
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||||||
// furnished to do so, subject to the following conditions:
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||||||
//
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||||||
// The above copyright notice and this permission notice shall be included in
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||||||
// all copies or substantial portions of the Software.
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||||||
//
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||||||
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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||||||
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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||||||
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
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||||||
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
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||||||
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
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||||||
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
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||||||
// THE SOFTWARE.
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||||||
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||||||
/**
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||||||
* Smoothie Charts - http://smoothiecharts.org/
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||||||
* (c) 2010-2013, Joe Walnes
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||||||
* 2013-2017, Drew Noakes
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*
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* v1.0: Main charting library, by Joe Walnes
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* v1.1: Auto scaling of axis, by Neil Dunn
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* v1.2: fps (frames per second) option, by Mathias Petterson
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* v1.3: Fix for divide by zero, by Paul Nikitochkin
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* v1.4: Set minimum, top-scale padding, remove timeseries, add optional timer to reset bounds, by Kelley Reynolds
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* v1.5: Set default frames per second to 50... smoother.
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* .start(), .stop() methods for conserving CPU, by Dmitry Vyal
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* options.interpolation = 'bezier' or 'line', by Dmitry Vyal
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* options.maxValue to fix scale, by Dmitry Vyal
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* v1.6: minValue/maxValue will always get converted to floats, by Przemek Matylla
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* v1.7: options.grid.fillStyle may be a transparent color, by Dmitry A. Shashkin
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* Smooth rescaling, by Kostas Michalopoulos
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* v1.8: Set max length to customize number of live points in the dataset with options.maxDataSetLength, by Krishna Narni
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* v1.9: Display timestamps along the bottom, by Nick and Stev-io
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* (https://groups.google.com/forum/?fromgroups#!topic/smoothie-charts/-Ywse8FCpKI%5B1-25%5D)
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* Refactored by Krishna Narni, to support timestamp formatting function
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* v1.10: Switch to requestAnimationFrame, removed the now obsoleted options.fps, by Gergely Imreh
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||||||
* v1.11: options.grid.sharpLines option added, by @drewnoakes
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* Addressed warning seen in Firefox when seriesOption.fillStyle undefined, by @drewnoakes
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* v1.12: Support for horizontalLines added, by @drewnoakes
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* Support for yRangeFunction callback added, by @drewnoakes
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* v1.13: Fixed typo (#32), by @alnikitich
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* v1.14: Timer cleared when last TimeSeries removed (#23), by @davidgaleano
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* Fixed diagonal line on chart at start/end of data stream, by @drewnoakes
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* v1.15: Support for npm package (#18), by @dominictarr
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* Fixed broken removeTimeSeries function (#24) by @davidgaleano
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||||||
* Minor performance and tidying, by @drewnoakes
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||||||
* v1.16: Bug fix introduced in v1.14 relating to timer creation/clearance (#23), by @drewnoakes
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||||||
* TimeSeries.append now deals with out-of-order timestamps, and can merge duplicates, by @zacwitte (#12)
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|
||||||
* Documentation and some local variable renaming for clarity, by @drewnoakes
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||||||
* v1.17: Allow control over font size (#10), by @drewnoakes
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||||||
* Timestamp text won't overlap, by @drewnoakes
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||||||
* v1.18: Allow control of max/min label precision, by @drewnoakes
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|
||||||
* Added 'borderVisible' chart option, by @drewnoakes
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|
||||||
* Allow drawing series with fill but no stroke (line), by @drewnoakes
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|
||||||
* v1.19: Avoid unnecessary repaints, and fixed flicker in old browsers having multiple charts in document (#40), by @asbai
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|
||||||
* v1.20: Add SmoothieChart.getTimeSeriesOptions and SmoothieChart.bringToFront functions, by @drewnoakes
|
|
||||||
* v1.21: Add 'step' interpolation mode, by @drewnoakes
|
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||||||
* v1.22: Add support for different pixel ratios. Also add optional y limit formatters, by @copacetic
|
|
||||||
* v1.23: Fix bug introduced in v1.22 (#44), by @drewnoakes
|
|
||||||
* v1.24: Fix bug introduced in v1.23, re-adding parseFloat to y-axis formatter defaults, by @siggy_sf
|
|
||||||
* v1.25: Fix bug seen when adding a data point to TimeSeries which is older than the current data, by @Nking92
|
|
||||||
* Draw time labels on top of series, by @comolosabia
|
|
||||||
* Add TimeSeries.clear function, by @drewnoakes
|
|
||||||
* v1.26: Add support for resizing on high device pixel ratio screens, by @copacetic
|
|
||||||
* v1.27: Fix bug introduced in v1.26 for non whole number devicePixelRatio values, by @zmbush
|
|
||||||
* v1.28: Add 'minValueScale' option, by @megawac
|
|
||||||
* Fix 'labelPos' for different size of 'minValueString' 'maxValueString', by @henryn
|
|
||||||
* v1.29: Support responsive sizing, by @drewnoakes
|
|
||||||
* v1.29.1: Include types in package, and make property optional, by @TrentHouliston
|
|
||||||
* v1.30: Fix inverted logic in devicePixelRatio support, by @scanlime
|
|
||||||
* v1.31: Support tooltips, by @Sly1024 and @drewnoakes
|
|
||||||
* v1.32: Support frame rate limit, by @dpuyosa
|
|
||||||
* v1.33: Use Date static method instead of instance, by @nnnoel
|
|
||||||
* Fix bug with tooltips when multiple charts on a page, by @jpmbiz70
|
|
||||||
*/
|
|
||||||
|
|
||||||
;(function(exports) {
|
|
||||||
|
|
||||||
// Date.now polyfill
|
|
||||||
Date.now = Date.now || function() { return new Date().getTime(); };
|
|
||||||
|
|
||||||
var Util = {
|
|
||||||
extend: function() {
|
|
||||||
arguments[0] = arguments[0] || {};
|
|
||||||
for (var i = 1; i < arguments.length; i++)
|
|
||||||
{
|
|
||||||
for (var key in arguments[i])
|
|
||||||
{
|
|
||||||
if (arguments[i].hasOwnProperty(key))
|
|
||||||
{
|
|
||||||
if (typeof(arguments[i][key]) === 'object') {
|
|
||||||
if (arguments[i][key] instanceof Array) {
|
|
||||||
arguments[0][key] = arguments[i][key];
|
|
||||||
} else {
|
|
||||||
arguments[0][key] = Util.extend(arguments[0][key], arguments[i][key]);
|
|
||||||
}
|
|
||||||
} else {
|
|
||||||
arguments[0][key] = arguments[i][key];
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
|
||||||
return arguments[0];
|
|
||||||
},
|
|
||||||
binarySearch: function(data, value) {
|
|
||||||
var low = 0,
|
|
||||||
high = data.length;
|
|
||||||
while (low < high) {
|
|
||||||
var mid = (low + high) >> 1;
|
|
||||||
if (value < data[mid][0])
|
|
||||||
high = mid;
|
|
||||||
else
|
|
||||||
low = mid + 1;
|
|
||||||
}
|
|
||||||
return low;
|
|
||||||
}
|
|
||||||
};
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Initialises a new <code>TimeSeries</code> with optional data options.
|
|
||||||
*
|
|
||||||
* Options are of the form (defaults shown):
|
|
||||||
*
|
|
||||||
* <pre>
|
|
||||||
* {
|
|
||||||
* resetBounds: true, // enables/disables automatic scaling of the y-axis
|
|
||||||
* resetBoundsInterval: 3000 // the period between scaling calculations, in millis
|
|
||||||
* }
|
|
||||||
* </pre>
|
|
||||||
*
|
|
||||||
* Presentation options for TimeSeries are specified as an argument to <code>SmoothieChart.addTimeSeries</code>.
|
|
||||||
*
|
|
||||||
* @constructor
|
|
||||||
*/
|
|
||||||
function TimeSeries(options) {
|
|
||||||
this.options = Util.extend({}, TimeSeries.defaultOptions, options);
|
|
||||||
this.clear();
|
|
||||||
}
|
|
||||||
|
|
||||||
TimeSeries.defaultOptions = {
|
|
||||||
resetBoundsInterval: 3000,
|
|
||||||
resetBounds: true
|
|
||||||
};
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Clears all data and state from this TimeSeries object.
|
|
||||||
*/
|
|
||||||
TimeSeries.prototype.clear = function() {
|
|
||||||
this.data = [];
|
|
||||||
this.maxValue = Number.NaN; // The maximum value ever seen in this TimeSeries.
|
|
||||||
this.minValue = Number.NaN; // The minimum value ever seen in this TimeSeries.
|
|
||||||
};
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Recalculate the min/max values for this <code>TimeSeries</code> object.
|
|
||||||
*
|
|
||||||
* This causes the graph to scale itself in the y-axis.
|
|
||||||
*/
|
|
||||||
TimeSeries.prototype.resetBounds = function() {
|
|
||||||
if (this.data.length) {
|
|
||||||
// Walk through all data points, finding the min/max value
|
|
||||||
this.maxValue = this.data[0][1];
|
|
||||||
this.minValue = this.data[0][1];
|
|
||||||
for (var i = 1; i < this.data.length; i++) {
|
|
||||||
var value = this.data[i][1];
|
|
||||||
if (value > this.maxValue) {
|
|
||||||
this.maxValue = value;
|
|
||||||
}
|
|
||||||
if (value < this.minValue) {
|
|
||||||
this.minValue = value;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
} else {
|
|
||||||
// No data exists, so set min/max to NaN
|
|
||||||
this.maxValue = Number.NaN;
|
|
||||||
this.minValue = Number.NaN;
|
|
||||||
}
|
|
||||||
};
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Adds a new data point to the <code>TimeSeries</code>, preserving chronological order.
|
|
||||||
*
|
|
||||||
* @param timestamp the position, in time, of this data point
|
|
||||||
* @param value the value of this data point
|
|
||||||
* @param sumRepeatedTimeStampValues if <code>timestamp</code> has an exact match in the series, this flag controls
|
|
||||||
* whether it is replaced, or the values summed (defaults to false.)
|
|
||||||
*/
|
|
||||||
TimeSeries.prototype.append = function(timestamp, value, sumRepeatedTimeStampValues) {
|
|
||||||
// Rewind until we hit an older timestamp
|
|
||||||
var i = this.data.length - 1;
|
|
||||||
while (i >= 0 && this.data[i][0] > timestamp) {
|
|
||||||
i--;
|
|
||||||
}
|
|
||||||
|
|
||||||
if (i === -1) {
|
|
||||||
// This new item is the oldest data
|
|
||||||
this.data.splice(0, 0, [timestamp, value]);
|
|
||||||
} else if (this.data.length > 0 && this.data[i][0] === timestamp) {
|
|
||||||
// Update existing values in the array
|
|
||||||
if (sumRepeatedTimeStampValues) {
|
|
||||||
// Sum this value into the existing 'bucket'
|
|
||||||
this.data[i][1] += value;
|
|
||||||
value = this.data[i][1];
|
|
||||||
} else {
|
|
||||||
// Replace the previous value
|
|
||||||
this.data[i][1] = value;
|
|
||||||
}
|
|
||||||
} else if (i < this.data.length - 1) {
|
|
||||||
// Splice into the correct position to keep timestamps in order
|
|
||||||
this.data.splice(i + 1, 0, [timestamp, value]);
|
|
||||||
} else {
|
|
||||||
// Add to the end of the array
|
|
||||||
this.data.push([timestamp, value]);
|
|
||||||
}
|
|
||||||
|
|
||||||
this.maxValue = isNaN(this.maxValue) ? value : Math.max(this.maxValue, value);
|
|
||||||
this.minValue = isNaN(this.minValue) ? value : Math.min(this.minValue, value);
|
|
||||||
};
|
|
||||||
|
|
||||||
TimeSeries.prototype.dropOldData = function(oldestValidTime, maxDataSetLength) {
|
|
||||||
// We must always keep one expired data point as we need this to draw the
|
|
||||||
// line that comes into the chart from the left, but any points prior to that can be removed.
|
|
||||||
var removeCount = 0;
|
|
||||||
while (this.data.length - removeCount >= maxDataSetLength && this.data[removeCount + 1][0] < oldestValidTime) {
|
|
||||||
removeCount++;
|
|
||||||
}
|
|
||||||
if (removeCount !== 0) {
|
|
||||||
this.data.splice(0, removeCount);
|
|
||||||
}
|
|
||||||
};
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Initialises a new <code>SmoothieChart</code>.
|
|
||||||
*
|
|
||||||
* Options are optional, and should be of the form below. Just specify the values you
|
|
||||||
* need and the rest will be given sensible defaults as shown:
|
|
||||||
*
|
|
||||||
* <pre>
|
|
||||||
* {
|
|
||||||
* minValue: undefined, // specify to clamp the lower y-axis to a given value
|
|
||||||
* maxValue: undefined, // specify to clamp the upper y-axis to a given value
|
|
||||||
* maxValueScale: 1, // allows proportional padding to be added above the chart. for 10% padding, specify 1.1.
|
|
||||||
* minValueScale: 1, // allows proportional padding to be added below the chart. for 10% padding, specify 1.1.
|
|
||||||
* yRangeFunction: undefined, // function({min: , max: }) { return {min: , max: }; }
|
|
||||||
* scaleSmoothing: 0.125, // controls the rate at which y-value zoom animation occurs
|
|
||||||
* millisPerPixel: 20, // sets the speed at which the chart pans by
|
|
||||||
* enableDpiScaling: true, // support rendering at different DPI depending on the device
|
|
||||||
* yMinFormatter: function(min, precision) { // callback function that formats the min y value label
|
|
||||||
* return parseFloat(min).toFixed(precision);
|
|
||||||
* },
|
|
||||||
* yMaxFormatter: function(max, precision) { // callback function that formats the max y value label
|
|
||||||
* return parseFloat(max).toFixed(precision);
|
|
||||||
* },
|
|
||||||
* maxDataSetLength: 2,
|
|
||||||
* interpolation: 'bezier' // one of 'bezier', 'linear', or 'step'
|
|
||||||
* timestampFormatter: null, // optional function to format time stamps for bottom of chart
|
|
||||||
* // you may use SmoothieChart.timeFormatter, or your own: function(date) { return ''; }
|
|
||||||
* scrollBackwards: false, // reverse the scroll direction of the chart
|
|
||||||
* horizontalLines: [], // [ { value: 0, color: '#ffffff', lineWidth: 1 } ]
|
|
||||||
* grid:
|
|
||||||
* {
|
|
||||||
* fillStyle: '#000000', // the background colour of the chart
|
|
||||||
* lineWidth: 1, // the pixel width of grid lines
|
|
||||||
* strokeStyle: '#777777', // colour of grid lines
|
|
||||||
* millisPerLine: 1000, // distance between vertical grid lines
|
|
||||||
* sharpLines: false, // controls whether grid lines are 1px sharp, or softened
|
|
||||||
* verticalSections: 2, // number of vertical sections marked out by horizontal grid lines
|
|
||||||
* borderVisible: true // whether the grid lines trace the border of the chart or not
|
|
||||||
* },
|
|
||||||
* labels
|
|
||||||
* {
|
|
||||||
* disabled: false, // enables/disables labels showing the min/max values
|
|
||||||
* fillStyle: '#ffffff', // colour for text of labels,
|
|
||||||
* fontSize: 15,
|
|
||||||
* fontFamily: 'sans-serif',
|
|
||||||
* precision: 2
|
|
||||||
* },
|
|
||||||
* tooltip: false // show tooltip when mouse is over the chart
|
|
||||||
* tooltipLine: { // properties for a vertical line at the cursor position
|
|
||||||
* lineWidth: 1,
|
|
||||||
* strokeStyle: '#BBBBBB'
|
|
||||||
* },
|
|
||||||
* tooltipFormatter: SmoothieChart.tooltipFormatter, // formatter function for tooltip text
|
|
||||||
* responsive: false, // whether the chart should adapt to the size of the canvas
|
|
||||||
* limitFPS: 0 // maximum frame rate the chart will render at, in FPS (zero means no limit)
|
|
||||||
* }
|
|
||||||
* </pre>
|
|
||||||
*
|
|
||||||
* @constructor
|
|
||||||
*/
|
|
||||||
function SmoothieChart(options) {
|
|
||||||
this.options = Util.extend({}, SmoothieChart.defaultChartOptions, options);
|
|
||||||
this.seriesSet = [];
|
|
||||||
this.currentValueRange = 1;
|
|
||||||
this.currentVisMinValue = 0;
|
|
||||||
this.lastRenderTimeMillis = 0;
|
|
||||||
|
|
||||||
this.mousemove = this.mousemove.bind(this);
|
|
||||||
this.mouseout = this.mouseout.bind(this);
|
|
||||||
}
|
|
||||||
|
|
||||||
/** Formats the HTML string content of the tooltip. */
|
|
||||||
SmoothieChart.tooltipFormatter = function (timestamp, data) {
|
|
||||||
var timestampFormatter = this.options.timestampFormatter || SmoothieChart.timeFormatter,
|
|
||||||
lines = [timestampFormatter(new Date(timestamp))];
|
|
||||||
|
|
||||||
for (var i = 0; i < data.length; ++i) {
|
|
||||||
lines.push('<span style="color:' + data[i].series.options.strokeStyle + '">' +
|
|
||||||
this.options.yMaxFormatter(data[i].value, this.options.labels.precision) + '</span>');
|
|
||||||
}
|
|
||||||
|
|
||||||
return lines.join('<br>');
|
|
||||||
};
|
|
||||||
|
|
||||||
SmoothieChart.defaultChartOptions = {
|
|
||||||
millisPerPixel: 20,
|
|
||||||
enableDpiScaling: true,
|
|
||||||
yMinFormatter: function(min, precision) {
|
|
||||||
return parseFloat(min).toFixed(precision);
|
|
||||||
},
|
|
||||||
yMaxFormatter: function(max, precision) {
|
|
||||||
return parseFloat(max).toFixed(precision);
|
|
||||||
},
|
|
||||||
maxValueScale: 1,
|
|
||||||
minValueScale: 1,
|
|
||||||
interpolation: 'bezier',
|
|
||||||
scaleSmoothing: 0.125,
|
|
||||||
maxDataSetLength: 2,
|
|
||||||
scrollBackwards: false,
|
|
||||||
grid: {
|
|
||||||
fillStyle: '#000000',
|
|
||||||
strokeStyle: '#777777',
|
|
||||||
lineWidth: 1,
|
|
||||||
sharpLines: false,
|
|
||||||
millisPerLine: 1000,
|
|
||||||
verticalSections: 2,
|
|
||||||
borderVisible: true
|
|
||||||
},
|
|
||||||
labels: {
|
|
||||||
fillStyle: '#ffffff',
|
|
||||||
disabled: false,
|
|
||||||
fontSize: 10,
|
|
||||||
fontFamily: 'monospace',
|
|
||||||
precision: 2
|
|
||||||
},
|
|
||||||
horizontalLines: [],
|
|
||||||
tooltip: false,
|
|
||||||
tooltipLine: {
|
|
||||||
lineWidth: 1,
|
|
||||||
strokeStyle: '#BBBBBB'
|
|
||||||
},
|
|
||||||
tooltipFormatter: SmoothieChart.tooltipFormatter,
|
|
||||||
responsive: false,
|
|
||||||
limitFPS: 0
|
|
||||||
};
|
|
||||||
|
|
||||||
// Based on http://inspirit.github.com/jsfeat/js/compatibility.js
|
|
||||||
SmoothieChart.AnimateCompatibility = (function() {
|
|
||||||
var requestAnimationFrame = function(callback, element) {
|
|
||||||
var requestAnimationFrame =
|
|
||||||
window.requestAnimationFrame ||
|
|
||||||
window.webkitRequestAnimationFrame ||
|
|
||||||
window.mozRequestAnimationFrame ||
|
|
||||||
window.oRequestAnimationFrame ||
|
|
||||||
window.msRequestAnimationFrame ||
|
|
||||||
function(callback) {
|
|
||||||
return window.setTimeout(function() {
|
|
||||||
callback(Date.now());
|
|
||||||
}, 16);
|
|
||||||
};
|
|
||||||
return requestAnimationFrame.call(window, callback, element);
|
|
||||||
},
|
|
||||||
cancelAnimationFrame = function(id) {
|
|
||||||
var cancelAnimationFrame =
|
|
||||||
window.cancelAnimationFrame ||
|
|
||||||
function(id) {
|
|
||||||
clearTimeout(id);
|
|
||||||
};
|
|
||||||
return cancelAnimationFrame.call(window, id);
|
|
||||||
};
|
|
||||||
|
|
||||||
return {
|
|
||||||
requestAnimationFrame: requestAnimationFrame,
|
|
||||||
cancelAnimationFrame: cancelAnimationFrame
|
|
||||||
};
|
|
||||||
})();
|
|
||||||
|
|
||||||
SmoothieChart.defaultSeriesPresentationOptions = {
|
|
||||||
lineWidth: 1,
|
|
||||||
strokeStyle: '#ffffff'
|
|
||||||
};
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Adds a <code>TimeSeries</code> to this chart, with optional presentation options.
|
|
||||||
*
|
|
||||||
* Presentation options should be of the form (defaults shown):
|
|
||||||
*
|
|
||||||
* <pre>
|
|
||||||
* {
|
|
||||||
* lineWidth: 1,
|
|
||||||
* strokeStyle: '#ffffff',
|
|
||||||
* fillStyle: undefined
|
|
||||||
* }
|
|
||||||
* </pre>
|
|
||||||
*/
|
|
||||||
SmoothieChart.prototype.addTimeSeries = function(timeSeries, options) {
|
|
||||||
this.seriesSet.push({timeSeries: timeSeries, options: Util.extend({}, SmoothieChart.defaultSeriesPresentationOptions, options)});
|
|
||||||
if (timeSeries.options.resetBounds && timeSeries.options.resetBoundsInterval > 0) {
|
|
||||||
timeSeries.resetBoundsTimerId = setInterval(
|
|
||||||
function() {
|
|
||||||
timeSeries.resetBounds();
|
|
||||||
},
|
|
||||||
timeSeries.options.resetBoundsInterval
|
|
||||||
);
|
|
||||||
}
|
|
||||||
};
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Removes the specified <code>TimeSeries</code> from the chart.
|
|
||||||
*/
|
|
||||||
SmoothieChart.prototype.removeTimeSeries = function(timeSeries) {
|
|
||||||
// Find the correct timeseries to remove, and remove it
|
|
||||||
var numSeries = this.seriesSet.length;
|
|
||||||
for (var i = 0; i < numSeries; i++) {
|
|
||||||
if (this.seriesSet[i].timeSeries === timeSeries) {
|
|
||||||
this.seriesSet.splice(i, 1);
|
|
||||||
break;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
// If a timer was operating for that timeseries, remove it
|
|
||||||
if (timeSeries.resetBoundsTimerId) {
|
|
||||||
// Stop resetting the bounds, if we were
|
|
||||||
clearInterval(timeSeries.resetBoundsTimerId);
|
|
||||||
}
|
|
||||||
};
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Gets render options for the specified <code>TimeSeries</code>.
|
|
||||||
*
|
|
||||||
* As you may use a single <code>TimeSeries</code> in multiple charts with different formatting in each usage,
|
|
||||||
* these settings are stored in the chart.
|
|
||||||
*/
|
|
||||||
SmoothieChart.prototype.getTimeSeriesOptions = function(timeSeries) {
|
|
||||||
// Find the correct timeseries to remove, and remove it
|
|
||||||
var numSeries = this.seriesSet.length;
|
|
||||||
for (var i = 0; i < numSeries; i++) {
|
|
||||||
if (this.seriesSet[i].timeSeries === timeSeries) {
|
|
||||||
return this.seriesSet[i].options;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
};
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Brings the specified <code>TimeSeries</code> to the top of the chart. It will be rendered last.
|
|
||||||
*/
|
|
||||||
SmoothieChart.prototype.bringToFront = function(timeSeries) {
|
|
||||||
// Find the correct timeseries to remove, and remove it
|
|
||||||
var numSeries = this.seriesSet.length;
|
|
||||||
for (var i = 0; i < numSeries; i++) {
|
|
||||||
if (this.seriesSet[i].timeSeries === timeSeries) {
|
|
||||||
var set = this.seriesSet.splice(i, 1);
|
|
||||||
this.seriesSet.push(set[0]);
|
|
||||||
break;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
};
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Instructs the <code>SmoothieChart</code> to start rendering to the provided canvas, with specified delay.
|
|
||||||
*
|
|
||||||
* @param canvas the target canvas element
|
|
||||||
* @param delayMillis an amount of time to wait before a data point is shown. This can prevent the end of the series
|
|
||||||
* from appearing on screen, with new values flashing into view, at the expense of some latency.
|
|
||||||
*/
|
|
||||||
SmoothieChart.prototype.streamTo = function(canvas, delayMillis) {
|
|
||||||
this.canvas = canvas;
|
|
||||||
this.delay = delayMillis;
|
|
||||||
this.start();
|
|
||||||
};
|
|
||||||
|
|
||||||
SmoothieChart.prototype.getTooltipEl = function () {
|
|
||||||
// Create the tool tip element lazily
|
|
||||||
if (!this.tooltipEl) {
|
|
||||||
this.tooltipEl = document.createElement('div');
|
|
||||||
this.tooltipEl.className = 'smoothie-chart-tooltip';
|
|
||||||
this.tooltipEl.style.position = 'absolute';
|
|
||||||
this.tooltipEl.style.display = 'none';
|
|
||||||
document.body.appendChild(this.tooltipEl);
|
|
||||||
}
|
|
||||||
return this.tooltipEl;
|
|
||||||
};
|
|
||||||
|
|
||||||
SmoothieChart.prototype.updateTooltip = function () {
|
|
||||||
var el = this.getTooltipEl();
|
|
||||||
|
|
||||||
if (!this.mouseover || !this.options.tooltip) {
|
|
||||||
el.style.display = 'none';
|
|
||||||
return;
|
|
||||||
}
|
|
||||||
|
|
||||||
var time = this.lastRenderTimeMillis - (this.delay || 0);
|
|
||||||
|
|
||||||
// Round time down to pixel granularity, so motion appears smoother.
|
|
||||||
time -= time % this.options.millisPerPixel;
|
|
||||||
|
|
||||||
// x pixel to time
|
|
||||||
var t = this.options.scrollBackwards
|
|
||||||
? time - this.mouseX * this.options.millisPerPixel
|
|
||||||
: time - (this.canvas.offsetWidth - this.mouseX) * this.options.millisPerPixel;
|
|
||||||
|
|
||||||
var data = [];
|
|
||||||
|
|
||||||
// For each data set...
|
|
||||||
for (var d = 0; d < this.seriesSet.length; d++) {
|
|
||||||
var timeSeries = this.seriesSet[d].timeSeries,
|
|
||||||
// find datapoint closest to time 't'
|
|
||||||
closeIdx = Util.binarySearch(timeSeries.data, t);
|
|
||||||
|
|
||||||
if (closeIdx > 0 && closeIdx < timeSeries.data.length) {
|
|
||||||
data.push({ series: this.seriesSet[d], index: closeIdx, value: timeSeries.data[closeIdx][1] });
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
if (data.length) {
|
|
||||||
el.innerHTML = this.options.tooltipFormatter.call(this, t, data);
|
|
||||||
el.style.display = 'block';
|
|
||||||
} else {
|
|
||||||
el.style.display = 'none';
|
|
||||||
}
|
|
||||||
};
|
|
||||||
|
|
||||||
SmoothieChart.prototype.mousemove = function (evt) {
|
|
||||||
this.mouseover = true;
|
|
||||||
this.mouseX = evt.offsetX;
|
|
||||||
this.mouseY = evt.offsetY;
|
|
||||||
this.mousePageX = evt.pageX;
|
|
||||||
this.mousePageY = evt.pageY;
|
|
||||||
|
|
||||||
var el = this.getTooltipEl();
|
|
||||||
el.style.top = Math.round(this.mousePageY) + 'px';
|
|
||||||
el.style.left = Math.round(this.mousePageX) + 'px';
|
|
||||||
this.updateTooltip();
|
|
||||||
};
|
|
||||||
|
|
||||||
SmoothieChart.prototype.mouseout = function () {
|
|
||||||
this.mouseover = false;
|
|
||||||
this.mouseX = this.mouseY = -1;
|
|
||||||
if (SmoothieChart.tooltipEl)
|
|
||||||
SmoothieChart.tooltipEl.style.display = 'none';
|
|
||||||
};
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Make sure the canvas has the optimal resolution for the device's pixel ratio.
|
|
||||||
*/
|
|
||||||
SmoothieChart.prototype.resize = function () {
|
|
||||||
var dpr = !this.options.enableDpiScaling || !window ? 1 : window.devicePixelRatio,
|
|
||||||
width, height;
|
|
||||||
if (this.options.responsive) {
|
|
||||||
// Newer behaviour: Use the canvas's size in the layout, and set the internal
|
|
||||||
// resolution according to that size and the device pixel ratio (eg: high DPI)
|
|
||||||
width = this.canvas.offsetWidth;
|
|
||||||
height = this.canvas.offsetHeight;
|
|
||||||
|
|
||||||
if (width !== this.lastWidth) {
|
|
||||||
this.lastWidth = width;
|
|
||||||
this.canvas.setAttribute('width', (Math.floor(width * dpr)).toString());
|
|
||||||
}
|
|
||||||
if (height !== this.lastHeight) {
|
|
||||||
this.lastHeight = height;
|
|
||||||
this.canvas.setAttribute('height', (Math.floor(height * dpr)).toString());
|
|
||||||
}
|
|
||||||
} else if (dpr !== 1) {
|
|
||||||
// Older behaviour: use the canvas's inner dimensions and scale the element's size
|
|
||||||
// according to that size and the device pixel ratio (eg: high DPI)
|
|
||||||
width = parseInt(this.canvas.getAttribute('width'));
|
|
||||||
height = parseInt(this.canvas.getAttribute('height'));
|
|
||||||
|
|
||||||
if (!this.originalWidth || (Math.floor(this.originalWidth * dpr) !== width)) {
|
|
||||||
this.originalWidth = width;
|
|
||||||
this.canvas.setAttribute('width', (Math.floor(width * dpr)).toString());
|
|
||||||
this.canvas.style.width = width + 'px';
|
|
||||||
this.canvas.getContext('2d').scale(dpr, dpr);
|
|
||||||
}
|
|
||||||
|
|
||||||
if (!this.originalHeight || (Math.floor(this.originalHeight * dpr) !== height)) {
|
|
||||||
this.originalHeight = height;
|
|
||||||
this.canvas.setAttribute('height', (Math.floor(height * dpr)).toString());
|
|
||||||
this.canvas.style.height = height + 'px';
|
|
||||||
this.canvas.getContext('2d').scale(dpr, dpr);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
};
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Starts the animation of this chart.
|
|
||||||
*/
|
|
||||||
SmoothieChart.prototype.start = function() {
|
|
||||||
if (this.frame) {
|
|
||||||
// We're already running, so just return
|
|
||||||
return;
|
|
||||||
}
|
|
||||||
|
|
||||||
this.canvas.addEventListener('mousemove', this.mousemove);
|
|
||||||
this.canvas.addEventListener('mouseout', this.mouseout);
|
|
||||||
|
|
||||||
// Renders a frame, and queues the next frame for later rendering
|
|
||||||
var animate = function() {
|
|
||||||
this.frame = SmoothieChart.AnimateCompatibility.requestAnimationFrame(function() {
|
|
||||||
this.render();
|
|
||||||
animate();
|
|
||||||
}.bind(this));
|
|
||||||
}.bind(this);
|
|
||||||
|
|
||||||
animate();
|
|
||||||
};
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Stops the animation of this chart.
|
|
||||||
*/
|
|
||||||
SmoothieChart.prototype.stop = function() {
|
|
||||||
if (this.frame) {
|
|
||||||
SmoothieChart.AnimateCompatibility.cancelAnimationFrame(this.frame);
|
|
||||||
delete this.frame;
|
|
||||||
this.canvas.removeEventListener('mousemove', this.mousemove);
|
|
||||||
this.canvas.removeEventListener('mouseout', this.mouseout);
|
|
||||||
}
|
|
||||||
};
|
|
||||||
|
|
||||||
SmoothieChart.prototype.updateValueRange = function() {
|
|
||||||
// Calculate the current scale of the chart, from all time series.
|
|
||||||
var chartOptions = this.options,
|
|
||||||
chartMaxValue = Number.NaN,
|
|
||||||
chartMinValue = Number.NaN;
|
|
||||||
|
|
||||||
for (var d = 0; d < this.seriesSet.length; d++) {
|
|
||||||
// TODO(ndunn): We could calculate / track these values as they stream in.
|
|
||||||
var timeSeries = this.seriesSet[d].timeSeries;
|
|
||||||
if (!isNaN(timeSeries.maxValue)) {
|
|
||||||
chartMaxValue = !isNaN(chartMaxValue) ? Math.max(chartMaxValue, timeSeries.maxValue) : timeSeries.maxValue;
|
|
||||||
}
|
|
||||||
|
|
||||||
if (!isNaN(timeSeries.minValue)) {
|
|
||||||
chartMinValue = !isNaN(chartMinValue) ? Math.min(chartMinValue, timeSeries.minValue) : timeSeries.minValue;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
// Scale the chartMaxValue to add padding at the top if required
|
|
||||||
if (chartOptions.maxValue != null) {
|
|
||||||
chartMaxValue = chartOptions.maxValue;
|
|
||||||
} else {
|
|
||||||
chartMaxValue *= chartOptions.maxValueScale;
|
|
||||||
}
|
|
||||||
|
|
||||||
// Set the minimum if we've specified one
|
|
||||||
if (chartOptions.minValue != null) {
|
|
||||||
chartMinValue = chartOptions.minValue;
|
|
||||||
} else {
|
|
||||||
chartMinValue -= Math.abs(chartMinValue * chartOptions.minValueScale - chartMinValue);
|
|
||||||
}
|
|
||||||
|
|
||||||
// If a custom range function is set, call it
|
|
||||||
if (this.options.yRangeFunction) {
|
|
||||||
var range = this.options.yRangeFunction({min: chartMinValue, max: chartMaxValue});
|
|
||||||
chartMinValue = range.min;
|
|
||||||
chartMaxValue = range.max;
|
|
||||||
}
|
|
||||||
|
|
||||||
if (!isNaN(chartMaxValue) && !isNaN(chartMinValue)) {
|
|
||||||
var targetValueRange = chartMaxValue - chartMinValue;
|
|
||||||
var valueRangeDiff = (targetValueRange - this.currentValueRange);
|
|
||||||
var minValueDiff = (chartMinValue - this.currentVisMinValue);
|
|
||||||
this.isAnimatingScale = Math.abs(valueRangeDiff) > 0.1 || Math.abs(minValueDiff) > 0.1;
|
|
||||||
this.currentValueRange += chartOptions.scaleSmoothing * valueRangeDiff;
|
|
||||||
this.currentVisMinValue += chartOptions.scaleSmoothing * minValueDiff;
|
|
||||||
}
|
|
||||||
|
|
||||||
this.valueRange = { min: chartMinValue, max: chartMaxValue };
|
|
||||||
};
|
|
||||||
|
|
||||||
SmoothieChart.prototype.render = function(canvas, time) {
|
|
||||||
var nowMillis = Date.now();
|
|
||||||
|
|
||||||
// Respect any frame rate limit.
|
|
||||||
if (this.options.limitFPS > 0 && nowMillis - this.lastRenderTimeMillis < (1000/this.options.limitFPS))
|
|
||||||
return;
|
|
||||||
|
|
||||||
if (!this.isAnimatingScale) {
|
|
||||||
// We're not animating. We can use the last render time and the scroll speed to work out whether
|
|
||||||
// we actually need to paint anything yet. If not, we can return immediately.
|
|
||||||
|
|
||||||
// Render at least every 1/6th of a second. The canvas may be resized, which there is
|
|
||||||
// no reliable way to detect.
|
|
||||||
var maxIdleMillis = Math.min(1000/6, this.options.millisPerPixel);
|
|
||||||
|
|
||||||
if (nowMillis - this.lastRenderTimeMillis < maxIdleMillis) {
|
|
||||||
return;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
this.resize();
|
|
||||||
this.updateTooltip();
|
|
||||||
|
|
||||||
this.lastRenderTimeMillis = nowMillis;
|
|
||||||
|
|
||||||
canvas = canvas || this.canvas;
|
|
||||||
time = time || nowMillis - (this.delay || 0);
|
|
||||||
|
|
||||||
// Round time down to pixel granularity, so motion appears smoother.
|
|
||||||
time -= time % this.options.millisPerPixel;
|
|
||||||
|
|
||||||
var context = canvas.getContext('2d'),
|
|
||||||
chartOptions = this.options,
|
|
||||||
dimensions = { top: 0, left: 0, width: canvas.clientWidth, height: canvas.clientHeight },
|
|
||||||
// Calculate the threshold time for the oldest data points.
|
|
||||||
oldestValidTime = time - (dimensions.width * chartOptions.millisPerPixel),
|
|
||||||
valueToYPixel = function(value) {
|
|
||||||
var offset = value - this.currentVisMinValue;
|
|
||||||
return this.currentValueRange === 0
|
|
||||||
? dimensions.height
|
|
||||||
: dimensions.height - (Math.round((offset / this.currentValueRange) * dimensions.height));
|
|
||||||
}.bind(this),
|
|
||||||
timeToXPixel = function(t) {
|
|
||||||
if(chartOptions.scrollBackwards) {
|
|
||||||
return Math.round((time - t) / chartOptions.millisPerPixel);
|
|
||||||
}
|
|
||||||
return Math.round(dimensions.width - ((time - t) / chartOptions.millisPerPixel));
|
|
||||||
};
|
|
||||||
|
|
||||||
this.updateValueRange();
|
|
||||||
|
|
||||||
context.font = chartOptions.labels.fontSize + 'px ' + chartOptions.labels.fontFamily;
|
|
||||||
|
|
||||||
// Save the state of the canvas context, any transformations applied in this method
|
|
||||||
// will get removed from the stack at the end of this method when .restore() is called.
|
|
||||||
context.save();
|
|
||||||
|
|
||||||
// Move the origin.
|
|
||||||
context.translate(dimensions.left, dimensions.top);
|
|
||||||
|
|
||||||
// Create a clipped rectangle - anything we draw will be constrained to this rectangle.
|
|
||||||
// This prevents the occasional pixels from curves near the edges overrunning and creating
|
|
||||||
// screen cheese (that phrase should need no explanation).
|
|
||||||
context.beginPath();
|
|
||||||
context.rect(0, 0, dimensions.width, dimensions.height);
|
|
||||||
context.clip();
|
|
||||||
|
|
||||||
// Clear the working area.
|
|
||||||
context.save();
|
|
||||||
context.fillStyle = chartOptions.grid.fillStyle;
|
|
||||||
context.clearRect(0, 0, dimensions.width, dimensions.height);
|
|
||||||
context.fillRect(0, 0, dimensions.width, dimensions.height);
|
|
||||||
context.restore();
|
|
||||||
|
|
||||||
// Grid lines...
|
|
||||||
context.save();
|
|
||||||
context.lineWidth = chartOptions.grid.lineWidth;
|
|
||||||
context.strokeStyle = chartOptions.grid.strokeStyle;
|
|
||||||
// Vertical (time) dividers.
|
|
||||||
if (chartOptions.grid.millisPerLine > 0) {
|
|
||||||
context.beginPath();
|
|
||||||
for (var t = time - (time % chartOptions.grid.millisPerLine);
|
|
||||||
t >= oldestValidTime;
|
|
||||||
t -= chartOptions.grid.millisPerLine) {
|
|
||||||
var gx = timeToXPixel(t);
|
|
||||||
if (chartOptions.grid.sharpLines) {
|
|
||||||
gx -= 0.5;
|
|
||||||
}
|
|
||||||
context.moveTo(gx, 0);
|
|
||||||
context.lineTo(gx, dimensions.height);
|
|
||||||
}
|
|
||||||
context.stroke();
|
|
||||||
context.closePath();
|
|
||||||
}
|
|
||||||
|
|
||||||
// Horizontal (value) dividers.
|
|
||||||
for (var v = 1; v < chartOptions.grid.verticalSections; v++) {
|
|
||||||
var gy = Math.round(v * dimensions.height / chartOptions.grid.verticalSections);
|
|
||||||
if (chartOptions.grid.sharpLines) {
|
|
||||||
gy -= 0.5;
|
|
||||||
}
|
|
||||||
context.beginPath();
|
|
||||||
context.moveTo(0, gy);
|
|
||||||
context.lineTo(dimensions.width, gy);
|
|
||||||
context.stroke();
|
|
||||||
context.closePath();
|
|
||||||
}
|
|
||||||
// Bounding rectangle.
|
|
||||||
if (chartOptions.grid.borderVisible) {
|
|
||||||
context.beginPath();
|
|
||||||
context.strokeRect(0, 0, dimensions.width, dimensions.height);
|
|
||||||
context.closePath();
|
|
||||||
}
|
|
||||||
context.restore();
|
|
||||||
|
|
||||||
// Draw any horizontal lines...
|
|
||||||
if (chartOptions.horizontalLines && chartOptions.horizontalLines.length) {
|
|
||||||
for (var hl = 0; hl < chartOptions.horizontalLines.length; hl++) {
|
|
||||||
var line = chartOptions.horizontalLines[hl],
|
|
||||||
hly = Math.round(valueToYPixel(line.value)) - 0.5;
|
|
||||||
context.strokeStyle = line.color || '#ffffff';
|
|
||||||
context.lineWidth = line.lineWidth || 1;
|
|
||||||
context.beginPath();
|
|
||||||
context.moveTo(0, hly);
|
|
||||||
context.lineTo(dimensions.width, hly);
|
|
||||||
context.stroke();
|
|
||||||
context.closePath();
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
// For each data set...
|
|
||||||
for (var d = 0; d < this.seriesSet.length; d++) {
|
|
||||||
context.save();
|
|
||||||
var timeSeries = this.seriesSet[d].timeSeries,
|
|
||||||
dataSet = timeSeries.data,
|
|
||||||
seriesOptions = this.seriesSet[d].options;
|
|
||||||
|
|
||||||
// Delete old data that's moved off the left of the chart.
|
|
||||||
timeSeries.dropOldData(oldestValidTime, chartOptions.maxDataSetLength);
|
|
||||||
|
|
||||||
// Set style for this dataSet.
|
|
||||||
context.lineWidth = seriesOptions.lineWidth;
|
|
||||||
context.strokeStyle = seriesOptions.strokeStyle;
|
|
||||||
// Draw the line...
|
|
||||||
context.beginPath();
|
|
||||||
// Retain lastX, lastY for calculating the control points of bezier curves.
|
|
||||||
var firstX = 0, lastX = 0, lastY = 0;
|
|
||||||
for (var i = 0; i < dataSet.length && dataSet.length !== 1; i++) {
|
|
||||||
var x = timeToXPixel(dataSet[i][0]),
|
|
||||||
y = valueToYPixel(dataSet[i][1]);
|
|
||||||
|
|
||||||
if (i === 0) {
|
|
||||||
firstX = x;
|
|
||||||
context.moveTo(x, y);
|
|
||||||
} else {
|
|
||||||
switch (chartOptions.interpolation) {
|
|
||||||
case "linear":
|
|
||||||
case "line": {
|
|
||||||
context.lineTo(x,y);
|
|
||||||
break;
|
|
||||||
}
|
|
||||||
case "bezier":
|
|
||||||
default: {
|
|
||||||
// Great explanation of Bezier curves: http://en.wikipedia.org/wiki/Bezier_curve#Quadratic_curves
|
|
||||||
//
|
|
||||||
// Assuming A was the last point in the line plotted and B is the new point,
|
|
||||||
// we draw a curve with control points P and Q as below.
|
|
||||||
//
|
|
||||||
// A---P
|
|
||||||
// |
|
|
||||||
// |
|
|
||||||
// |
|
|
||||||
// Q---B
|
|
||||||
//
|
|
||||||
// Importantly, A and P are at the same y coordinate, as are B and Q. This is
|
|
||||||
// so adjacent curves appear to flow as one.
|
|
||||||
//
|
|
||||||
context.bezierCurveTo( // startPoint (A) is implicit from last iteration of loop
|
|
||||||
Math.round((lastX + x) / 2), lastY, // controlPoint1 (P)
|
|
||||||
Math.round((lastX + x)) / 2, y, // controlPoint2 (Q)
|
|
||||||
x, y); // endPoint (B)
|
|
||||||
break;
|
|
||||||
}
|
|
||||||
case "step": {
|
|
||||||
context.lineTo(x,lastY);
|
|
||||||
context.lineTo(x,y);
|
|
||||||
break;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
lastX = x; lastY = y;
|
|
||||||
}
|
|
||||||
|
|
||||||
if (dataSet.length > 1) {
|
|
||||||
if (seriesOptions.fillStyle) {
|
|
||||||
// Close up the fill region.
|
|
||||||
context.lineTo(dimensions.width + seriesOptions.lineWidth + 1, lastY);
|
|
||||||
context.lineTo(dimensions.width + seriesOptions.lineWidth + 1, dimensions.height + seriesOptions.lineWidth + 1);
|
|
||||||
context.lineTo(firstX, dimensions.height + seriesOptions.lineWidth);
|
|
||||||
context.fillStyle = seriesOptions.fillStyle;
|
|
||||||
context.fill();
|
|
||||||
}
|
|
||||||
|
|
||||||
if (seriesOptions.strokeStyle && seriesOptions.strokeStyle !== 'none') {
|
|
||||||
context.stroke();
|
|
||||||
}
|
|
||||||
context.closePath();
|
|
||||||
}
|
|
||||||
context.restore();
|
|
||||||
}
|
|
||||||
|
|
||||||
if (chartOptions.tooltip && this.mouseX >= 0) {
|
|
||||||
// Draw vertical bar to show tooltip position
|
|
||||||
context.lineWidth = chartOptions.tooltipLine.lineWidth;
|
|
||||||
context.strokeStyle = chartOptions.tooltipLine.strokeStyle;
|
|
||||||
context.beginPath();
|
|
||||||
context.moveTo(this.mouseX, 0);
|
|
||||||
context.lineTo(this.mouseX, dimensions.height);
|
|
||||||
context.closePath();
|
|
||||||
context.stroke();
|
|
||||||
this.updateTooltip();
|
|
||||||
}
|
|
||||||
|
|
||||||
// Draw the axis values on the chart.
|
|
||||||
if (!chartOptions.labels.disabled && !isNaN(this.valueRange.min) && !isNaN(this.valueRange.max)) {
|
|
||||||
var maxValueString = chartOptions.yMaxFormatter(this.valueRange.max, chartOptions.labels.precision),
|
|
||||||
minValueString = chartOptions.yMinFormatter(this.valueRange.min, chartOptions.labels.precision),
|
|
||||||
maxLabelPos = chartOptions.scrollBackwards ? 0 : dimensions.width - context.measureText(maxValueString).width - 2,
|
|
||||||
minLabelPos = chartOptions.scrollBackwards ? 0 : dimensions.width - context.measureText(minValueString).width - 2;
|
|
||||||
context.fillStyle = chartOptions.labels.fillStyle;
|
|
||||||
context.fillText(maxValueString, maxLabelPos, chartOptions.labels.fontSize);
|
|
||||||
context.fillText(minValueString, minLabelPos, dimensions.height - 2);
|
|
||||||
}
|
|
||||||
|
|
||||||
// Display timestamps along x-axis at the bottom of the chart.
|
|
||||||
if (chartOptions.timestampFormatter && chartOptions.grid.millisPerLine > 0) {
|
|
||||||
var textUntilX = chartOptions.scrollBackwards
|
|
||||||
? context.measureText(minValueString).width
|
|
||||||
: dimensions.width - context.measureText(minValueString).width + 4;
|
|
||||||
for (var t = time - (time % chartOptions.grid.millisPerLine);
|
|
||||||
t >= oldestValidTime;
|
|
||||||
t -= chartOptions.grid.millisPerLine) {
|
|
||||||
var gx = timeToXPixel(t);
|
|
||||||
// Only draw the timestamp if it won't overlap with the previously drawn one.
|
|
||||||
if ((!chartOptions.scrollBackwards && gx < textUntilX) || (chartOptions.scrollBackwards && gx > textUntilX)) {
|
|
||||||
// Formats the timestamp based on user specified formatting function
|
|
||||||
// SmoothieChart.timeFormatter function above is one such formatting option
|
|
||||||
var tx = new Date(t),
|
|
||||||
ts = chartOptions.timestampFormatter(tx),
|
|
||||||
tsWidth = context.measureText(ts).width;
|
|
||||||
|
|
||||||
textUntilX = chartOptions.scrollBackwards
|
|
||||||
? gx + tsWidth + 2
|
|
||||||
: gx - tsWidth - 2;
|
|
||||||
|
|
||||||
context.fillStyle = chartOptions.labels.fillStyle;
|
|
||||||
if(chartOptions.scrollBackwards) {
|
|
||||||
context.fillText(ts, gx, dimensions.height - 2);
|
|
||||||
} else {
|
|
||||||
context.fillText(ts, gx - tsWidth, dimensions.height - 2);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
context.restore(); // See .save() above.
|
|
||||||
};
|
|
||||||
|
|
||||||
// Sample timestamp formatting function
|
|
||||||
SmoothieChart.timeFormatter = function(date) {
|
|
||||||
function pad2(number) { return (number < 10 ? '0' : '') + number }
|
|
||||||
return pad2(date.getHours()) + ':' + pad2(date.getMinutes()) + ':' + pad2(date.getSeconds());
|
|
||||||
};
|
|
||||||
|
|
||||||
exports.TimeSeries = TimeSeries;
|
|
||||||
exports.SmoothieChart = SmoothieChart;
|
|
||||||
|
|
||||||
})(typeof exports === 'undefined' ? this : exports);
|
|
||||||
|
|
||||||
Reference in New Issue
Block a user