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<!DOCTYPE html>
<html>
<head>
<title>Vega Theme Test</title>
<script src="https://cdn.jsdelivr.net/npm/vega@5"></script>
<script src="https://cdn.jsdelivr.net/npm/vega-lite@4"></script>
<script src="https://cdn.jsdelivr.net/npm/vega-embed@6"></script>
<script src="build/vega-themes.js"></script>
<style>
body {
margin: 10px;
font-size: 14px;
font-family: sans-serif;
position: relative;
}
#header {
padding: 10px 0 20px;
height: 20px;
}
#views {
display: flex;
flex-wrap: wrap;
justify-content: left;
}
.view {
flex: 0;
margin-right: 5px;
margin-bottom: 10px;
}
.view > canvas,
.view > svg {
border: 1px dashed #ccc;
}
.vega-bind {
line-height: 18px;
margin-bottom: 2px;
}
.vega-bind-name {
display: inline-block;
width: 100px;
}
.vega-bind input[type="range"] {
width: 400px;
}
.vega-bind label {
margin: 0 0.5em 0 2px;
}
</style>
</head>
<body>
<div id="header">
Theme:
<select id="themes">
<option value="default">default</option>
<option value="excel">excel</option>
<option value="ggplot2">ggplot2</option>
<option value="quartz">quartz</option>
<option value="vox">vox</option>
<option value="dark">dark</option>
<option value="fivethirtyeight">fivethirtyeight</option>
<option value="latimes">latimes</option>
<option value="urbaninstitute">urbaninstitute</option>
<option value="googlecharts">googlecharts</option>
<option value="powerbi">powerbi</option>
<option value="carbonwhite">carbonwhite</option>
<option value="carbong10">carbong10</option>
<option value="carbong90">carbong90</option>
<option value="carbong100">carbong100</option>
</select>
Renderer:
<select id="render">
<option value="svg" selected>svg</option>
<option value="canvas">canvas</option>
</select>
<br />
</div>
<div id="views"></div>
<script>
var files = [
"bars.vg.json",
"lines.vg.json",
"scatter.vg.json",
"stacked.vl.json",
"area.vl.json",
"heatmap.vl.json",
"ramp.vl.json",
"diverging.vl.json",
];
var specs = [];
var container = document.querySelector("#views"),
loader = vega.loader(),
renderType = "svg",
theme = {};
Promise.all(
files.map(function (file) {
var index = specs.length;
specs.push(file);
return loader.load(file).then(function (json) {
specs[index] = JSON.parse(json);
});
})
)
.then(function () {
var earlierChoosenTheme = url.searchParams.get("theme");
var selectedGraph = url.searchParams.get("renderer");
if (earlierChoosenTheme) {
theme = vegaThemes[earlierChoosenTheme];
themes.value = earlierChoosenTheme;
}
if (selectedGraph) {
render.value = selectedGraph;
renderType = selectedGraph;
}
refresh();
})
.catch(function (err) {
console.error(err, err.stack);
});
var themes = document.querySelector("#themes");
var currentLocation = window.location;
var url = new URL(currentLocation);
themes.addEventListener("change", function () {
theme = vegaThemes[themes.options[themes.selectedIndex].value];
url.searchParams.set("theme", `${themes.options[themes.selectedIndex].value}`);
window.history.replaceState(null, null, url);
refresh();
});
var render = document.querySelector("#render");
render.addEventListener("change", function () {
renderType = render.options[render.selectedIndex].value;
url.searchParams.set("renderer", `${render.options[render.selectedIndex].value}`);
window.history.replaceState(null, null, url);
refresh();
});
function refresh() {
container.innerHTML = "";
setBackground(theme);
specs.forEach(function (spec) {
var el = document.createElement("div");
el.setAttribute("class", "view");
container.appendChild(el);
vegaEmbed(el, spec, {
renderer: renderType,
config: theme,
defaultStyle: true,
});
});
}
function setBackground(theme) {
document.body.style.background = null;
document.body.style.color = null;
if (!theme) {
return;
}
if ("background" in theme) {
document.body.style.background = theme.background;
}
if ("title" in theme && "color" in theme.title) {
document.body.style.color = theme.title.color;
}
}
</script>
</body>
</html>
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