| /* |
| * Copyright (c) 2013 DataTorrent, Inc. ALL Rights Reserved. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| /*global angular, d3*/ |
| (function () { |
| 'use strict'; |
| |
| angular.module('widgets') |
| .directive('widgetsBarChart', function () { |
| return { |
| restrict: 'A', |
| scope: { |
| data: "=", |
| label: "@", |
| onClick: "&" |
| }, |
| link: function(scope, iElement, iAttrs) { |
| var svg = d3.select(iElement[0]) |
| .append("svg") |
| .attr("width", "100%"); |
| |
| // on window resize, re-render d3 canvas |
| window.onresize = function() { |
| return scope.$apply(); |
| }; |
| scope.$watch(function(){ |
| return angular.element(window)[0].innerWidth; |
| }, function(){ |
| return scope.render(scope.data); |
| } |
| ); |
| |
| // watch for data changes and re-render |
| scope.$watch('data', function(newVals, oldVals) { |
| return scope.render(newVals); |
| }, true); |
| |
| // define render function |
| scope.render = function(data){ |
| // remove all previous items before render |
| svg.selectAll("*").remove(); |
| |
| // setup variables |
| var width, height, max; |
| width = d3.select(iElement[0])[0][0].offsetWidth - 20; |
| // 20 is for margins and can be changed |
| height = scope.data.length * 35; |
| // 35 = 30(bar height) + 5(margin between bars) |
| max = 98; |
| // this can also be found dynamically when the data is not static |
| // max = Math.max.apply(Math, _.map(data, ((val)-> val.count))) |
| |
| // set the height based on the calculations above |
| svg.attr('height', height); |
| |
| //create the rectangles for the bar chart |
| svg.selectAll("rect") |
| .data(data) |
| .enter() |
| .append("rect") |
| .on("click", function(d, i){return scope.onClick({item: d});}) |
| .attr("height", 30) // height of each bar |
| .attr("width", 0) // initial width of 0 for transition |
| .attr("x", 10) // half of the 20 side margin specified above |
| .attr("y", function(d, i){ |
| return i * 35; |
| }) // height + margin between bars |
| //.transition() |
| //.duration(1000) |
| .attr("width", function(d){ |
| var w = d.score/(max/width); // width based on scale |
| return w > 10 ? w : 10; |
| }); |
| |
| svg.selectAll("text") |
| .data(data) |
| .enter() |
| .append("text") |
| .attr("fill", "#fff") |
| .attr("y", function(d, i){return i * 35 + 22;}) |
| .attr("x", 15) |
| .text(function(d){return d[scope.label];}); |
| |
| }; |
| } |
| }; |
| }); |
| |
| })(); |