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c3_chart_internal_fn.initBar = function () {
var $$ = this;
$$.main.select('.' + CLASS.chart).append("g")
.attr("class", CLASS.chartBars);
};
c3_chart_internal_fn.updateTargetsForBar = function (targets) {
var $$ = this, config = $$.config,
mainBarUpdate, mainBarEnter,
classChartBar = $$.classChartBar.bind($$),
classBars = $$.classBars.bind($$),
classFocus = $$.classFocus.bind($$);
mainBarUpdate = $$.main.select('.' + CLASS.chartBars).selectAll('.' + CLASS.chartBar)
.data(targets)
.attr('class', function (d) { return classChartBar(d) + classFocus(d); });
mainBarEnter = mainBarUpdate.enter().append('g')
.attr('class', classChartBar)
.style('opacity', 0)
.style("pointer-events", "none");
// Bars for each data
mainBarEnter.append('g')
.attr("class", classBars)
.style("cursor", function (d) { return config.data_selection_isselectable(d) ? "pointer" : null; });
};
c3_chart_internal_fn.updateBar = function (durationForExit) {
var $$ = this,
barData = $$.barData.bind($$),
classBar = $$.classBar.bind($$),
initialOpacity = $$.initialOpacity.bind($$),
color = function (d) { return $$.color(d.id); };
$$.mainBar = $$.main.selectAll('.' + CLASS.bars).selectAll('.' + CLASS.bar)
.data(barData);
$$.mainBar.enter().append('path')
.attr("class", classBar)
.style("stroke", color)
.style("fill", color);
$$.mainBar
.style("opacity", initialOpacity);
$$.mainBar.exit().transition().duration(durationForExit)
.style('opacity', 0)
.remove();
};
c3_chart_internal_fn.redrawBar = function (drawBar, withTransition) {
return [
(withTransition ? this.mainBar.transition() : this.mainBar)
.attr('d', drawBar)
.style("fill", this.color)
.style("opacity", 1)
];
};
c3_chart_internal_fn.getBarW = function (axis, barTargetsNum) {
var $$ = this, config = $$.config,
w = typeof config.bar_width === 'number' ? config.bar_width : barTargetsNum ? (axis.tickInterval() * config.bar_width_ratio) / barTargetsNum : 0;
return config.bar_width_max && w > config.bar_width_max ? config.bar_width_max : w;
};
c3_chart_internal_fn.getBars = function (i, id) {
var $$ = this;
return (id ? $$.main.selectAll('.' + CLASS.bars + $$.getTargetSelectorSuffix(id)) : $$.main).selectAll('.' + CLASS.bar + (isValue(i) ? '-' + i : ''));
};
c3_chart_internal_fn.expandBars = function (i, id, reset) {
var $$ = this;
if (reset) { $$.unexpandBars(); }
$$.getBars(i, id).classed(CLASS.EXPANDED, true);
};
c3_chart_internal_fn.unexpandBars = function (i) {
var $$ = this;
$$.getBars(i).classed(CLASS.EXPANDED, false);
};
c3_chart_internal_fn.generateDrawBar = function (barIndices, isSub) {
var $$ = this, config = $$.config,
getPoints = $$.generateGetBarPoints(barIndices, isSub);
return function (d, i) {
// 4 points that make a bar
var points = getPoints(d, i);
// switch points if axis is rotated, not applicable for sub chart
var indexX = config.axis_rotated ? 1 : 0;
var indexY = config.axis_rotated ? 0 : 1;
var path = 'M ' + points[0][indexX] + ',' + points[0][indexY] + ' ' +
'L' + points[1][indexX] + ',' + points[1][indexY] + ' ' +
'L' + points[2][indexX] + ',' + points[2][indexY] + ' ' +
'L' + points[3][indexX] + ',' + points[3][indexY] + ' ' +
'z';
return path;
};
};
c3_chart_internal_fn.generateGetBarPoints = function (barIndices, isSub) {
var $$ = this,
axis = isSub ? $$.subXAxis : $$.xAxis,
barTargetsNum = barIndices.__max__ + 1,
barW = $$.getBarW(axis, barTargetsNum),
barX = $$.getShapeX(barW, barTargetsNum, barIndices, !!isSub),
barY = $$.getShapeY(!!isSub),
barOffset = $$.getShapeOffset($$.isBarType, barIndices, !!isSub),
yScale = isSub ? $$.getSubYScale : $$.getYScale;
return function (d, i) {
var y0 = yScale.call($$, d.id)(0),
offset = barOffset(d, i) || y0, // offset is for stacked bar chart
posX = barX(d), posY = barY(d);
// fix posY not to overflow opposite quadrant
if ($$.config.axis_rotated) {
if ((0 < d.value && posY < y0) || (d.value < 0 && y0 < posY)) { posY = y0; }
}
// 4 points that make a bar
return [
[posX, offset],
[posX, posY - (y0 - offset)],
[posX + barW, posY - (y0 - offset)],
[posX + barW, offset]
];
};
};
c3_chart_internal_fn.isWithinBar = function (that) {
var mouse = this.d3.mouse(that), box = that.getBoundingClientRect(),
seg0 = that.pathSegList.getItem(0), seg1 = that.pathSegList.getItem(1),
x = Math.min(seg0.x, seg1.x), y = Math.min(seg0.y, seg1.y),
w = box.width, h = box.height, offset = 2,
sx = x - offset, ex = x + w + offset, sy = y + h + offset, ey = y - offset;
return sx < mouse[0] && mouse[0] < ex && ey < mouse[1] && mouse[1] < sy;
};
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