dded tooltip + beautified column chart

index.html

@@ -61,6 +61,7 @@
     <script type="text/javascript" src="lib/angular.min.js"></script>
     <script type="text/javascript" src="js/ng-drag.js"></script>
     <script type="text/javascript" src="lib/d3.v4.min.js"></script>
+    <script type="text/javascript" src="lib/d3-tip.js"></script>
     <script type="text/javascript" src="js/draw-chart.js"></script>
     <script type="text/javascript" src="js/app.js"></script>
 </body>

js/app.js

@@ -137,7 +137,11 @@ app.controller("mainController", ["allData","$scope",function (allData,$scope) {
                 chartData.push({"x":keys[i],"y":tmpData[keys[i]]});
             }
 
-            drawChart(chartData);
+            drawChart(chartData,[$scope.data.chosenDimension,$scope.data.chosenMeasure]);
+        }
+        else
+        {
+            cleanChart();
         }
     });
 }]);

js/draw-chart.js

@@ -1,14 +1,14 @@
-function drawChart(data)
+function drawChart(data,axisLabel)
 {
   var eleChart = d3.select(".chart").html(""),
       eleChartBbox = eleChart.node().getBoundingClientRect(),
-      margin = {top: 20, right: 20, bottom: 30, left: 40},
+      margin = {top: 35, right: 20, bottom: 60, left: 70},
       width = +eleChartBbox.width - margin.left - margin.right,
       height = +eleChartBbox.height - margin.top - margin.bottom;
 
-  var svg = eleChart.append("svg").attr("width",width).attr("height",height);
+  var svg = eleChart.append("svg").attr("width",eleChartBbox.width).attr("height",eleChartBbox.height);
 
-  var x = d3.scaleBand().rangeRound([0, width]).padding(0.1),
+  var x = d3.scaleBand().rangeRound([0, width]).padding(0.25),
       y = d3.scaleLinear().rangeRound([height, 0]);
 
   var g = svg.append("g")
@@ -20,19 +20,48 @@ function drawChart(data)
 
   g.append("g")
       .attr("class", "axis axis-x")
+      .style("font-size",".75em")
       .attr("transform", "translate(0," + height + ")")
       .call(d3.axisBottom(x));
 
   g.append("g")
       .attr("class", "axis axis-y")
-      .call(d3.axisLeft(y).ticks(10, "%"))
+      .style("font-size",".75em")
+      .call(d3.axisLeft(y).ticks(10))
     .append("text")
-      .attr("transform", "rotate(-90)")
+      .attr("transform", "translate(15,0) rotate(-90)")
       .attr("y", 6)
       .attr("dy", "0.71em")
       .attr("text-anchor", "end")
       .text("y");
 
+  var xLabel = ((axisLabel.length == 2) && axisLabel[0] ) || "X-label";
+  var yLabel = ((axisLabel.length == 2) && axisLabel[1] ) || "Y-label";
+
+  var xLabelPos = d3.select(".axis-x").node().getBBox().height*2 + height;
+  var yLabelPos = -d3.select(".axis-y").node().getBBox().width*0.65;
+
+  g
+    .append('g').classed("label-x",true)
+    .attr('transform', 'translate(' + (width/2) + ', ' + xLabelPos + ')')
+    .append('text')
+    .attr('text-anchor', 'middle')
+    .text(xLabel);
+
+  g
+    .append('g').classed("label-y",true)
+    .attr('transform', 'translate(' + yLabelPos + ', ' + (height/2) + ') rotate(-90)')
+    .append('text')
+    .attr('text-anchor', 'middle')
+    .attr("shape-rendering","crispEdges")
+    .text(yLabel);
+
+  var tip_points = d3.tip()
+    .attr('class', 'd3-tip')
+    .html(function(d) { return d.y; });
+
+  var vis = svg.call(tip_points);
+
   g.selectAll(".bar")
     .data(data)
     .enter().append("rect")
@@ -40,7 +69,18 @@ function drawChart(data)
       .attr("x", function(d) { return x(d.x); })
       .attr("y", function(d) { return y(d.y); })
       .attr("width", x.bandwidth())
-      .attr("height", function(d) { return height - y(d.y); });
+      .attr("height", function(d) { return height - y(d.y); })
+      .on('mouseover', function () {
+        tip_points.show.apply(this,arguments);
+
+      })
+      .on('mouseout', function () {
+        tip_points.hide.apply(this,arguments);
+
+   });
 
 }
 
+function cleanChart() {
+  var eleChart = d3.select(".chart").html("");
+}

lib/d3-tip.js

@@ -0,0 +1,320 @@
+// d3.tip
+// Copyright (c) 2013 Justin Palmer
+// ES6 / D3 v4 Adaption Copyright (c) 2016 Constantin Gavrilete
+// Removal of ES6 for D3 v4 Adaption Copyright (c) 2016 David Gotz
+//
+// Tooltips for d3.js SVG visualizations
+
+d3.functor = function functor(v) {
+  return typeof v === "function" ? v : function() {
+    return v;
+  };
+};
+
+d3.tip = function() {
+
+  var direction = d3_tip_direction,
+      offset    = d3_tip_offset,
+      html      = d3_tip_html,
+      node      = initNode(),
+      svg       = null,
+      point     = null,
+      target    = null
+
+  function tip(vis) {
+    svg = getSVGNode(vis)
+    point = svg.createSVGPoint()
+    document.body.appendChild(node)
+  }
+
+  // Public - show the tooltip on the screen
+  //
+  // Returns a tip
+  tip.show = function() {
+    var args = Array.prototype.slice.call(arguments)
+    if(args[args.length - 1] instanceof SVGElement) target = args.pop()
+
+    var content = html.apply(this, args),
+        poffset = offset.apply(this, args),
+        dir     = direction.apply(this, args),
+        nodel   = getNodeEl(),
+        i       = directions.length,
+        coords,
+        scrollTop  = document.documentElement.scrollTop || document.body.scrollTop,
+        scrollLeft = document.documentElement.scrollLeft || document.body.scrollLeft
+
+    nodel.html(content)
+      .style('position', 'absolute')
+      .style('opacity', 1)
+      .style('pointer-events', 'all')
+
+    while(i--) nodel.classed(directions[i], false)
+    coords = direction_callbacks[dir].apply(this)
+    nodel.classed(dir, true)
+      .style('top', (coords.top +  poffset[0]) + scrollTop + 'px')
+      .style('left', (coords.left + poffset[1]) + scrollLeft + 'px')
+
+    return tip
+  }
+
+  // Public - hide the tooltip
+  //
+  // Returns a tip
+  tip.hide = function() {
+    var nodel = getNodeEl()
+    nodel
+      .style('opacity', 0)
+      .style('pointer-events', 'none')
+    return tip
+  }
+
+  // Public: Proxy attr calls to the d3 tip container.  Sets or gets attribute value.
+  //
+  // n - name of the attribute
+  // v - value of the attribute
+  //
+  // Returns tip or attribute value
+  tip.attr = function(n, v) {
+    if (arguments.length < 2 && typeof n === 'string') {
+      return getNodeEl().attr(n)
+    } else {
+      var args =  Array.prototype.slice.call(arguments)
+      d3.selection.prototype.attr.apply(getNodeEl(), args)
+    }
+
+    return tip
+  }
+
+  // Public: Proxy style calls to the d3 tip container.  Sets or gets a style value.
+  //
+  // n - name of the property
+  // v - value of the property
+  //
+  // Returns tip or style property value
+  tip.style = function(n, v) {
+    // debugger;
+    if (arguments.length < 2 && typeof n === 'string') {
+      return getNodeEl().style(n)
+    } else {
+      var args = Array.prototype.slice.call(arguments);
+      if (args.length === 1) {
+        var styles = args[0];
+        Object.keys(styles).forEach(function(key) {
+          return d3.selection.prototype.style.apply(getNodeEl(), [key, styles[key]]);
+        });
+      }
+    }
+
+    return tip
+  }
+
+  // Public: Set or get the direction of the tooltip
+  //
+  // v - One of n(north), s(south), e(east), or w(west), nw(northwest),
+  //     sw(southwest), ne(northeast) or se(southeast)
+  //
+  // Returns tip or direction
+  tip.direction = function(v) {
+    if (!arguments.length) return direction
+    direction = v == null ? v : d3.functor(v)
+
+    return tip
+  }
+
+  // Public: Sets or gets the offset of the tip
+  //
+  // v - Array of [x, y] offset
+  //
+  // Returns offset or
+  tip.offset = function(v) {
+    if (!arguments.length) return offset
+    offset = v == null ? v : d3.functor(v)
+
+    return tip
+  }
+
+  // Public: sets or gets the html value of the tooltip
+  //
+  // v - String value of the tip
+  //
+  // Returns html value or tip
+  tip.html = function(v) {
+    if (!arguments.length) return html
+    html = v == null ? v : d3.functor(v)
+
+    return tip
+  }
+
+  // Public: destroys the tooltip and removes it from the DOM
+  //
+  // Returns a tip
+  tip.destroy = function() {
+    if(node) {
+      getNodeEl().remove();
+      node = null;
+    }
+    return tip;
+  }
+
+  function d3_tip_direction() { return 'n' }
+  function d3_tip_offset() { return [0, 0] }
+  function d3_tip_html() { return ' ' }
+
+  var direction_callbacks = {
+    n:  direction_n,
+    s:  direction_s,
+    e:  direction_e,
+    w:  direction_w,
+    nw: direction_nw,
+    ne: direction_ne,
+    sw: direction_sw,
+    se: direction_se
+  };
+
+  var directions = Object.keys(direction_callbacks);
+
+  function direction_n() {
+    var bbox = getScreenBBox()
+    return {
+      top:  bbox.n.y - node.offsetHeight,
+      left: bbox.n.x - node.offsetWidth / 2
+    }
+  }
+
+  function direction_s() {
+    var bbox = getScreenBBox()
+    return {
+      top:  bbox.s.y,
+      left: bbox.s.x - node.offsetWidth / 2
+    }
+  }
+
+  function direction_e() {
+    var bbox = getScreenBBox()
+    return {
+      top:  bbox.e.y - node.offsetHeight / 2,
+      left: bbox.e.x
+    }
+  }
+
+  function direction_w() {
+    var bbox = getScreenBBox()
+    return {
+      top:  bbox.w.y - node.offsetHeight / 2,
+      left: bbox.w.x - node.offsetWidth
+    }
+  }
+
+  function direction_nw() {
+    var bbox = getScreenBBox()
+    return {
+      top:  bbox.nw.y - node.offsetHeight,
+      left: bbox.nw.x - node.offsetWidth
+    }
+  }
+
+  function direction_ne() {
+    var bbox = getScreenBBox()
+    return {
+      top:  bbox.ne.y - node.offsetHeight,
+      left: bbox.ne.x
+    }
+  }
+
+  function direction_sw() {
+    var bbox = getScreenBBox()
+    return {
+      top:  bbox.sw.y,
+      left: bbox.sw.x - node.offsetWidth
+    }
+  }
+
+  function direction_se() {
+    var bbox = getScreenBBox()
+    return {
+      top:  bbox.se.y,
+      left: bbox.e.x
+    }
+  }
+
+  function initNode() {
+    var node = d3.select(document.createElement('div'))
+    node
+      .style('position', 'absolute')
+      .style('top', 0)
+      .style('opacity', 0)
+      .style('pointer-events', 'none')
+      .style('box-sizing', 'border-box')
+
+    return node.node()
+  }
+
+  function getSVGNode(el) {
+    el = el.node()
+    if(el.tagName.toLowerCase() === 'svg')
+      return el
+
+    return el.ownerSVGElement
+  }
+
+  function getNodeEl() {
+    if(node === null) {
+      node = initNode();
+      // re-add node to DOM
+      document.body.appendChild(node);
+    };
+    return d3.select(node);
+  }
+
+  // Private - gets the screen coordinates of a shape
+  //
+  // Given a shape on the screen, will return an SVGPoint for the directions
+  // n(north), s(south), e(east), w(west), ne(northeast), se(southeast), nw(northwest),
+  // sw(southwest).
+  //
+  //    +-+-+
+  //    |   |
+  //    +   +
+  //    |   |
+  //    +-+-+
+  //
+  // Returns an Object {n, s, e, w, nw, sw, ne, se}
+  function getScreenBBox() {
+    var targetel   = target || d3.event.target;
+
+    while ('undefined' === typeof targetel.getScreenCTM && 'undefined' === targetel.parentNode) {
+        targetel = targetel.parentNode;
+    }
+
+    var bbox       = {},
+        matrix     = targetel.getScreenCTM(),
+        tbbox      = targetel.getBBox(),
+        width      = tbbox.width,
+        height     = tbbox.height,
+        x          = tbbox.x,
+        y          = tbbox.y
+
+    point.x = x
+    point.y = y
+    bbox.nw = point.matrixTransform(matrix)
+    point.x += width
+    bbox.ne = point.matrixTransform(matrix)
+    point.y += height
+    bbox.se = point.matrixTransform(matrix)
+    point.x -= width
+    bbox.sw = point.matrixTransform(matrix)
+    point.y -= height / 2
+    bbox.w  = point.matrixTransform(matrix)
+    point.x += width
+    bbox.e = point.matrixTransform(matrix)
+    point.x -= width / 2
+    point.y -= height / 2
+    bbox.n = point.matrixTransform(matrix)
+    point.y += height
+    bbox.s = point.matrixTransform(matrix)
+
+    return bbox
+  }
+
+  return tip
+};

style.css

@@ -100,7 +100,8 @@ body
     width: 100%;
     height: 100%;
         
-    background-color: lightgray;
+    /*background-color: lightgray;*/
+    overflow: hidden;
 }
 
 ul.unstyled-list