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Fixup barchart example requires and add necessary CSS. #292

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Fixup barchart example requires and add necessary CSS. #292

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39 changes: 33 additions & 6 deletions clojurescript/c2/c2.asciidoc
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Expand Up @@ -21,25 +21,52 @@ In your dependencies:
[com.keminglabs/c2 "0.2.3"]
----

Then in a ClojureScript file associated with an HTML page containing a `<div id="barchart"></div>`.
Then in a ClojureScript file associated with an HTML page containing a `<div id="barchart"></div>` and the following styles:

[source,css]
---
.bar {
width: 100%
}
.bar-fill {
display: inline-block;
background-color: gray;
height: 2em;
}
.label {
display: block;
vertical-align: middle;
width: 2em;
}
---


[source,clojure]
----
(ns barchart
(:require-macros [c2.util :refer [bind!]])
(:require [c2.core :refer [unify]]
[c2.scale :as scale]))

(def !my-data (atom {"A" 1, "B" 2, "C" 4, "D" 3}))

(def x-scale
(scale/linear :domain [0 4] :range [0 100]))

(def x-scale-percent
#(str (x-scale %) "%"))

(bind! "#barchart"
[:div#barchart
[:h2 "Rad barchart!"]
[:div.bars
(unify !my-data
[:table
(unify @!my-data
(fn [[label val]]
[:div.bar
[:div.bar-fill {:style {:width (x-scale val)}}]
[:span.label label]]))]])
[:tr
[:td
[:span.label label]]
[:td.bar
[:div.bar-fill {:style {:width (x-scale-percent val)}}]]]))]])
----


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