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TiddlyWiki5/editions/tw2/source/tiddlywiki/js/Sparkline.js
2012-11-16 21:20:27 +00:00

57 lines
1.5 KiB
JavaScript
Executable File

//--
//-- Sparklines
//--
config.macros.sparkline = {};
config.shadowTiddlers.StyleSheetSparklines = "/*{{{*/\n" +
".sparkline {\n" +
"\tline-height: 1em;\n" +
"\tborder: 0;\n" +
"\tbackground: [[ColorPalette::PrimaryPale]];\n" +
"}\n\n" +
".sparktick {\n" +
"\toutline: 0;\n" +
"\tbackground: [[ColorPalette::PrimaryDark]];\n" +
"}\n" +
"/*}}}*/";
store.addNotification("StyleSheetSparklines", refreshStyles);
config.macros.sparkline.handler = function(place,macroName,params)
{
var data = [];
var min = 0;
var max = 0;
var v;
for(var t=0; t<params.length; t++) {
v = parseInt(params[t],10);
if(v < min)
min = v;
if(v > max)
max = v;
data.push(v);
}
if(data.length < 1)
return;
var box = createTiddlyElement(place,"span",null,"sparkline",String.fromCharCode(160));
box.title = data.join(",");
var w = box.offsetWidth;
var h = box.offsetHeight;
box.style.paddingRight = (data.length * 2 - w) + "px";
box.style.position = "relative";
for(var d=0; d<data.length; d++) {
var tick = document.createElement("img");
tick.border = 0;
tick.className = "sparktick";
tick.style.position = "absolute";
tick.src = "data:image/gif,GIF89a%01%00%01%00%91%FF%00%FF%FF%FF%00%00%00%C0%C0%C0%00%00%00!%F9%04%01%00%00%02%00%2C%00%00%00%00%01%00%01%00%40%02%02T%01%00%3B";
tick.style.left = d*2 + "px";
tick.style.width = "2px";
v = Math.floor(((data[d] - min)/(max-min)) * h);
tick.style.top = (h-v) + "px";
tick.style.height = v + "px";
box.appendChild(tick);
}
};