38 lines
970 B
JavaScript
38 lines
970 B
JavaScript
var draw = function(canvas, chunks, fillStyle) {
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chunks = chunks || [];
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if (!canvas.getContext) {
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console.log('use chunk bar on an canvas implementation!');
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return;
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}
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var ctx = canvas.getContext('2d');
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ctx.fillStyle = fillStyle || "#149BDF";
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ctx.clearRect(0, 0, canvas.width, canvas.height);
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var x = 0,
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width = canvas.width,
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height = canvas.height;
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chunks.forEach(function(c) {
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var dx = c.ratio * width;
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if (c.show)
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ctx.fillRect(x, 0, dx, height);
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x += dx;
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});
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};
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app.directive('chunkbar', ['$utils', function(utils) {
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return function(scope, elem, attrs) {
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var bitfield = "", pieces = 0;
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var update = function() {
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draw(elem[0], utils.getChunksFromHex(bitfield, pieces), attrs.fillStyle);
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};
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scope.$watch(attrs.bitfield, function(bf) {
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bitfield = bf;
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update();
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});
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scope.$watch(attrs.pieces, function(p) {
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pieces = p;
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update();
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});
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update();
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};
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}]);
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