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window.SonarWidgets = {};
//******************* STACK AREA CHART ******************* //
SonarWidgets.StackArea = function (divId) {
this.wDivId = divId;
this.wHeight;
this.wData;
this.wSnapshots;
this.wMetrics;
this.wColors;
this.height = function (height) {
this.wHeight = height;
return this;
};
this.data = function (data) {
this.wData = data;
return this;
};
this.snapshots = function (snapshots) {
this.wSnapshots = snapshots;
return this;
};
this.metrics = function (metrics) {
this.wMetrics = metrics;
return this;
};
this.colors = function (colors) {
this.wColors = colors;
return this;
};
};
SonarWidgets.StackArea.prototype.render = function () {
var trendData = this.wData;
var metrics = this.wMetrics;
var snapshots = this.wSnapshots;
var colors = this.wColors;
var widgetDiv = $(this.wDivId);
var headerFont = "10.5px Arial,Helvetica,sans-serif";
/* Computes the total of the trendData of each date */
var total = [];
for (i = 0; i < trendData[0].size(); i++) {
total[i] = 0;
for (j = 0; j < metrics.size(); j++) {
total[i] += trendData[j][i].y;
}
total[i] = "" + Math.round(total[i] * 10) / 10;
}
/* Computes the highest Y value */
var maxY = 0;
for (i = 0; i < trendData[0].size(); i++) {
var currentYSum = 0;
for (j = 0; j < trendData.size(); j++) {
currentYSum += trendData[j][i].y;
}
if (currentYSum > maxY) {
maxY = currentYSum;
}
}
/* Computes minimum width of left margin according to the max Y value so that the Y-axis is correctly displayed */
var leftMargin = 25;
var maxYLength = (Math.round(maxY) + "").length;
// first part is for numbers and second for commas (1000-separator)
minMargin = maxYLength * 7 + Math.floor(maxYLength / 3) * 2;
if (minMargin > leftMargin) {
leftMargin = minMargin;
}
/* Sizing and scales. */
var headerHeight = 40;
var w = widgetDiv.getOffsetParent().getWidth() - leftMargin - 40;
var h = (this.wHeight == null ? 200 : this.wHeight) + headerHeight;
var x = pv.Scale.linear(pv.blend(pv.map(trendData, function (d) {
return d;
})),
function (d) {
return d.x;
}).range(0, w);
var y = pv.Scale.linear(0, maxY).range(0, h - headerHeight);
var idx_numbers = trendData[0].size();
var idx = idx_numbers - 1;
function computeIdx(xPixels) {
var mx = x.invert(xPixels);
var i = pv.search(trendData[0].map(function (d) {
return d.x;
}), mx);
i = i < 0 ? (-i - 2) : i;
i = i < 0 ? 0 : i;
return i;
}
/* The root panel. */
var vis = new pv.Panel()
.canvas(widgetDiv)
.width(w)
.height(h)
.left(leftMargin)
.right(20)
.bottom(30)
.top(20)
.strokeStyle("#CCC");
/* X-axis */
vis.add(pv.Rule)
.data(x.ticks())
.left(x)
.bottom(-10)
.height(10)
.anchor("bottom")
.add(pv.Label)
.text(x.tickFormat);
/* Y-axis and ticks. */
vis.add(pv.Rule)
.data(y.ticks(6))
.bottom(y)
.strokeStyle("rgba(128,128,128,.2)")
.anchor("left")
.add(pv.Label)
.text(y.tickFormat);
/* The stack layout */
var area = vis.add(pv.Layout.Stack)
.layers(trendData)
.x(function (d) {
return x(d.x);
})
.y(function (d) {
return y(d.y);
})
.layer
.add(pv.Area)
.fillStyle(function () {
return colors[this.parent.index % colors.size()][0];
})
.strokeStyle("rgba(128,128,128,.8)");
/* Stack labels. */
var firstIdx = computeIdx(w / 5);
var lastIdx = computeIdx(w * 4 / 5);
vis.add(pv.Panel)
.extend(area.parent)
.add(pv.Area)
.extend(area)
.fillStyle(null)
.strokeStyle(null)
.anchor(function () {
return (idx == idx_numbers - 1 || idx > lastIdx) ? "right" : ((idx == 0 || idx < firstIdx) ? "left" : "center");
})
.add(pv.Label)
.visible(function (d) {
return this.index == idx && d.y != 0;
})
.font(function (d) {
return Math.round(5 + Math.sqrt(y(d.y))) + "px sans-serif";
})
.textStyle("#DDD")
.text(function (d) {
return metrics[this.parent.index] + ": " + d.y;
});
/* The total cost of the selected dot in the header. */
vis.add(pv.Label)
.left(8)
.top(16)
.font(headerFont)
.text(function () {
return "Total: " + total[idx];
});
/* The date of the selected dot in the header. */
vis.add(pv.Label)
.left(w / 2)
.top(16)
.font(headerFont)
.text(function () {
return snapshots[idx].ld;
});
/* The event labels */
eventColor = "rgba(75,159,213,1)";
eventHoverColor = "rgba(202,227,242,1)";
vis.add(pv.Line)
.strokeStyle("rgba(0,0,0,.001)")
.data(snapshots)
.left(function (s) {
return x(s.d);
})
.bottom(0)
.anchor("top")
.add(pv.Dot)
.bottom(-6)
.shape("triangle")
.angle(pv.radians(180))
.strokeStyle("grey")
.visible(function (s) {
return s.e.size() > 0;
})
.fillStyle(function () {
return this.index === idx ? eventHoverColor : eventColor;
})
.add(pv.Dot)
.radius(3)
.visible(function (s) {
return s.e.size() > 0 && this.index === idx;
})
.left(w / 2 + 8)
.top(24)
.shape("triangle")
.fillStyle(function () {
return this.index === idx ? eventHoverColor : eventColor;
})
.strokeStyle("grey")
.anchor("right")
.add(pv.Label)
.font(headerFont)
.text(function (s) {
return s.e.size() === 0 ? "" : s.e[0] + ( s.e[1] ? " (... +" + (s.e.size() - 1) + ")" : "");
});
/* An invisible bar to capture events (without flickering). */
vis.add(pv.Bar)
.fillStyle("rgba(0,0,0,.001)")
.width(w + 30)
.height(h + 30)
.event("mouseout", function () {
i = -1;
return vis;
})
.event("mousemove", function () {
idx = computeIdx(vis.mouse().x);
return vis;
});
vis.render();
};
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