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/**
* Tristate charts
*/
$.fn.sparkline.tristate = tristate = createClass($.fn.sparkline._base, barHighlightMixin, {
type: 'tristate',
init: function (el, values, options, width, height) {
var barWidth = parseInt(options.get('barWidth'), 10),
barSpacing = parseInt(options.get('barSpacing'), 10);
tristate._super.init.call(this, el, values, options, width, height);
this.regionShapes = {};
this.barWidth = barWidth;
this.barSpacing = barSpacing;
this.totalBarWidth = barWidth + barSpacing;
this.values = $.map(values, Number);
this.width = width = (values.length * barWidth) + ((values.length - 1) * barSpacing);
if ($.isArray(options.get('colorMap'))) {
this.colorMapByIndex = options.get('colorMap');
this.colorMapByValue = null;
} else {
this.colorMapByIndex = null;
this.colorMapByValue = options.get('colorMap');
if (this.colorMapByValue && this.colorMapByValue.get === undefined) {
this.colorMapByValue = new RangeMap(this.colorMapByValue);
}
}
this.initTarget();
},
getRegion: function (el, x, y) {
return Math.floor(x / this.totalBarWidth);
},
getCurrentRegionFields: function () {
var currentRegion = this.currentRegion;
return {
isNull: this.values[currentRegion] === undefined,
value: this.values[currentRegion],
color: this.calcColor(this.values[currentRegion], currentRegion),
offset: currentRegion
};
},
calcColor: function (value, valuenum) {
var values = this.values,
options = this.options,
colorMapByIndex = this.colorMapByIndex,
colorMapByValue = this.colorMapByValue,
color, newColor;
if (colorMapByValue && (newColor = colorMapByValue.get(value))) {
color = newColor;
} else if (colorMapByIndex && colorMapByIndex.length > valuenum) {
color = colorMapByIndex[valuenum];
} else if (values[valuenum] < 0) {
color = options.get('negBarColor');
} else if (values[valuenum] > 0) {
color = options.get('posBarColor');
} else {
color = options.get('zeroBarColor');
}
return color;
},
renderRegion: function (valuenum, highlight) {
var values = this.values,
options = this.options,
target = this.target,
canvasHeight, height, halfHeight,
x, y, color;
canvasHeight = target.pixelHeight;
halfHeight = Math.round(canvasHeight / 2);
x = valuenum * this.totalBarWidth;
if (values[valuenum] < 0) {
y = halfHeight;
height = halfHeight - 1;
} else if (values[valuenum] > 0) {
y = 0;
height = halfHeight - 1;
} else {
y = halfHeight - 1;
height = 2;
}
color = this.calcColor(values[valuenum], valuenum);
if (color === null) {
return;
}
if (highlight) {
color = this.calcHighlightColor(color, options);
}
return target.drawRect(x, y, this.barWidth - 1, height - 1, color, color);
}
});