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c3_chart_internal_fn.getYDomainMin = function (targets) {
var $$ = this, config = $$.config,
ids = $$.mapToIds(targets), ys = $$.getValuesAsIdKeyed(targets),
j, k, baseId, idsInGroup, id, hasNegativeValue;
if (config.data_groups.length > 0) {
hasNegativeValue = $$.hasNegativeValueInTargets(targets);
for (j = 0; j < config.data_groups.length; j++) {
// Determine baseId
idsInGroup = config.data_groups[j].filter(function (id) { return ids.indexOf(id) >= 0; });
if (idsInGroup.length === 0) { continue; }
baseId = idsInGroup[0];
// Consider negative values
if (hasNegativeValue && ys[baseId]) {
ys[baseId].forEach(function (v, i) {
ys[baseId][i] = v < 0 ? v : 0;
});
}
// Compute min
for (k = 1; k < idsInGroup.length; k++) {
id = idsInGroup[k];
if (! ys[id]) { continue; }
ys[id].forEach(function (v, i) {
if ($$.axis.getId(id) === $$.axis.getId(baseId) && ys[baseId] && !(hasNegativeValue && +v > 0)) {
ys[baseId][i] += +v;
}
});
}
}
}
return $$.d3.min(Object.keys(ys).map(function (key) { return $$.d3.min(ys[key]); }));
};
c3_chart_internal_fn.getYDomainMax = function (targets) {
var $$ = this, config = $$.config,
ids = $$.mapToIds(targets), ys = $$.getValuesAsIdKeyed(targets),
j, k, baseId, idsInGroup, id, hasPositiveValue;
if (config.data_groups.length > 0) {
hasPositiveValue = $$.hasPositiveValueInTargets(targets);
for (j = 0; j < config.data_groups.length; j++) {
// Determine baseId
idsInGroup = config.data_groups[j].filter(function (id) { return ids.indexOf(id) >= 0; });
if (idsInGroup.length === 0) { continue; }
baseId = idsInGroup[0];
// Consider positive values
if (hasPositiveValue && ys[baseId]) {
ys[baseId].forEach(function (v, i) {
ys[baseId][i] = v > 0 ? v : 0;
});
}
// Compute max
for (k = 1; k < idsInGroup.length; k++) {
id = idsInGroup[k];
if (! ys[id]) { continue; }
ys[id].forEach(function (v, i) {
if ($$.axis.getId(id) === $$.axis.getId(baseId) && ys[baseId] && !(hasPositiveValue && +v < 0)) {
ys[baseId][i] += +v;
}
});
}
}
}
return $$.d3.max(Object.keys(ys).map(function (key) { return $$.d3.max(ys[key]); }));
};
c3_chart_internal_fn.getYDomain = function (targets, axisId, xDomain) {
var $$ = this, config = $$.config,
targetsByAxisId = targets.filter(function (t) { return $$.axis.getId(t.id) === axisId; }),
yTargets = xDomain ? $$.filterByXDomain(targetsByAxisId, xDomain) : targetsByAxisId,
yMin = axisId === 'y2' ? config.axis_y2_min : config.axis_y_min,
yMax = axisId === 'y2' ? config.axis_y2_max : config.axis_y_max,
yDomainMin = $$.getYDomainMin(yTargets),
yDomainMax = $$.getYDomainMax(yTargets),
domain, domainLength, padding, padding_top, padding_bottom,
center = axisId === 'y2' ? config.axis_y2_center : config.axis_y_center,
yDomainAbs, lengths, diff, ratio, isAllPositive, isAllNegative,
isZeroBased = ($$.hasType('bar', yTargets) && config.bar_zerobased) || ($$.hasType('area', yTargets) && config.area_zerobased),
isInverted = axisId === 'y2' ? config.axis_y2_inverted : config.axis_y_inverted,
showHorizontalDataLabel = $$.hasDataLabel() && config.axis_rotated,
showVerticalDataLabel = $$.hasDataLabel() && !config.axis_rotated;
// MEMO: avoid inverting domain unexpectedly
yDomainMin = isValue(yMin) ? yMin : isValue(yMax) ? (yDomainMin < yMax ? yDomainMin : yMax - 10) : yDomainMin;
yDomainMax = isValue(yMax) ? yMax : isValue(yMin) ? (yMin < yDomainMax ? yDomainMax : yMin + 10) : yDomainMax;
if (yTargets.length === 0) { // use current domain if target of axisId is none
return axisId === 'y2' ? $$.y2.domain() : $$.y.domain();
}
if (isNaN(yDomainMin)) { // set minimum to zero when not number
yDomainMin = 0;
}
if (isNaN(yDomainMax)) { // set maximum to have same value as yDomainMin
yDomainMax = yDomainMin;
}
if (yDomainMin === yDomainMax) {
yDomainMin < 0 ? yDomainMax = 0 : yDomainMin = 0;
}
isAllPositive = yDomainMin >= 0 && yDomainMax >= 0;
isAllNegative = yDomainMin <= 0 && yDomainMax <= 0;
// Cancel zerobased if axis_*_min / axis_*_max specified
if ((isValue(yMin) && isAllPositive) || (isValue(yMax) && isAllNegative)) {
isZeroBased = false;
}
// Bar/Area chart should be 0-based if all positive|negative
if (isZeroBased) {
if (isAllPositive) { yDomainMin = 0; }
if (isAllNegative) { yDomainMax = 0; }
}
domainLength = Math.abs(yDomainMax - yDomainMin);
padding = padding_top = padding_bottom = domainLength * 0.1;
if (typeof center !== 'undefined') {
yDomainAbs = Math.max(Math.abs(yDomainMin), Math.abs(yDomainMax));
yDomainMax = center + yDomainAbs;
yDomainMin = center - yDomainAbs;
}
// add padding for data label
if (showHorizontalDataLabel) {
lengths = $$.getDataLabelLength(yDomainMin, yDomainMax, 'width');
diff = diffDomain($$.y.range());
ratio = [lengths[0] / diff, lengths[1] / diff];
padding_top += domainLength * (ratio[1] / (1 - ratio[0] - ratio[1]));
padding_bottom += domainLength * (ratio[0] / (1 - ratio[0] - ratio[1]));
} else if (showVerticalDataLabel) {
lengths = $$.getDataLabelLength(yDomainMin, yDomainMax, 'height');
padding_top += $$.axis.convertPixelsToAxisPadding(lengths[1], domainLength);
padding_bottom += $$.axis.convertPixelsToAxisPadding(lengths[0], domainLength);
}
if (axisId === 'y' && notEmpty(config.axis_y_padding)) {
padding_top = $$.axis.getPadding(config.axis_y_padding, 'top', padding_top, domainLength);
padding_bottom = $$.axis.getPadding(config.axis_y_padding, 'bottom', padding_bottom, domainLength);
}
if (axisId === 'y2' && notEmpty(config.axis_y2_padding)) {
padding_top = $$.axis.getPadding(config.axis_y2_padding, 'top', padding_top, domainLength);
padding_bottom = $$.axis.getPadding(config.axis_y2_padding, 'bottom', padding_bottom, domainLength);
}
// Bar/Area chart should be 0-based if all positive|negative
if (isZeroBased) {
if (isAllPositive) { padding_bottom = yDomainMin; }
if (isAllNegative) { padding_top = -yDomainMax; }
}
domain = [yDomainMin - padding_bottom, yDomainMax + padding_top];
return isInverted ? domain.reverse() : domain;
};
c3_chart_internal_fn.getXDomainMin = function (targets) {
var $$ = this, config = $$.config;
return isDefined(config.axis_x_min) ?
($$.isTimeSeries() ? this.parseDate(config.axis_x_min) : config.axis_x_min) :
$$.d3.min(targets, function (t) { return $$.d3.min(t.values, function (v) { return v.x; }); });
};
c3_chart_internal_fn.getXDomainMax = function (targets) {
var $$ = this, config = $$.config;
return isDefined(config.axis_x_max) ?
($$.isTimeSeries() ? this.parseDate(config.axis_x_max) : config.axis_x_max) :
$$.d3.max(targets, function (t) { return $$.d3.max(t.values, function (v) { return v.x; }); });
};
c3_chart_internal_fn.getXDomainPadding = function (domain) {
var $$ = this, config = $$.config,
diff = domain[1] - domain[0],
maxDataCount, padding, paddingLeft, paddingRight;
if ($$.isCategorized()) {
padding = 0;
} else if ($$.hasType('bar')) {
maxDataCount = $$.getMaxDataCount();
padding = maxDataCount > 1 ? (diff / (maxDataCount - 1)) / 2 : 0.5;
} else {
padding = diff * 0.01;
}
if (typeof config.axis_x_padding === 'object' && notEmpty(config.axis_x_padding)) {
paddingLeft = isValue(config.axis_x_padding.left) ? config.axis_x_padding.left : padding;
paddingRight = isValue(config.axis_x_padding.right) ? config.axis_x_padding.right : padding;
} else if (typeof config.axis_x_padding === 'number') {
paddingLeft = paddingRight = config.axis_x_padding;
} else {
paddingLeft = paddingRight = padding;
}
return {left: paddingLeft, right: paddingRight};
};
c3_chart_internal_fn.getXDomain = function (targets) {
var $$ = this,
xDomain = [$$.getXDomainMin(targets), $$.getXDomainMax(targets)],
firstX = xDomain[0], lastX = xDomain[1],
padding = $$.getXDomainPadding(xDomain),
min = 0, max = 0;
// show center of x domain if min and max are the same
if ((firstX - lastX) === 0 && !$$.isCategorized()) {
if ($$.isTimeSeries()) {
firstX = new Date(firstX.getTime() * 0.5);
lastX = new Date(lastX.getTime() * 1.5);
} else {
firstX = firstX === 0 ? 1 : (firstX * 0.5);
lastX = lastX === 0 ? -1 : (lastX * 1.5);
}
}
if (firstX || firstX === 0) {
min = $$.isTimeSeries() ? new Date(firstX.getTime() - padding.left) : firstX - padding.left;
}
if (lastX || lastX === 0) {
max = $$.isTimeSeries() ? new Date(lastX.getTime() + padding.right) : lastX + padding.right;
}
return [min, max];
};
c3_chart_internal_fn.updateXDomain = function (targets, withUpdateXDomain, withUpdateOrgXDomain, withTrim, domain) {
var $$ = this, config = $$.config;
if (withUpdateOrgXDomain) {
$$.x.domain(domain ? domain : $$.d3.extent($$.getXDomain(targets)));
$$.orgXDomain = $$.x.domain();
if (config.zoom_enabled) { $$.zoom.scale($$.x).updateScaleExtent(); }
$$.subX.domain($$.x.domain());
if ($$.brush) { $$.brush.scale($$.subX); }
}
if (withUpdateXDomain) {
$$.x.domain(domain ? domain : (!$$.brush || $$.brush.empty()) ? $$.orgXDomain : $$.brush.extent());
if (config.zoom_enabled) { $$.zoom.scale($$.x).updateScaleExtent(); }
}
// Trim domain when too big by zoom mousemove event
if (withTrim) { $$.x.domain($$.trimXDomain($$.x.orgDomain())); }
return $$.x.domain();
};
c3_chart_internal_fn.trimXDomain = function (domain) {
var $$ = this;
if (domain[0] <= $$.orgXDomain[0]) {
domain[1] = +domain[1] + ($$.orgXDomain[0] - domain[0]);
domain[0] = $$.orgXDomain[0];
}
if ($$.orgXDomain[1] <= domain[1]) {
domain[0] = +domain[0] - (domain[1] - $$.orgXDomain[1]);
domain[1] = $$.orgXDomain[1];
}
return domain;
};
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