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c3_chart_internal_fn.initGrid = function () {
var $$ = this, config = $$.config, d3 = $$.d3;
$$.grid = $$.main.append('g')
.attr("clip-path", $$.clipPathForGrid)
.attr('class', CLASS.grid);
if (config.grid_x_show) {
$$.grid.append("g").attr("class", CLASS.xgrids);
}
if (config.grid_y_show) {
$$.grid.append('g').attr('class', CLASS.ygrids);
}
if (config.grid_focus_show) {
$$.grid.append('g')
.attr("class", CLASS.xgridFocus)
.append('line')
.attr('class', CLASS.xgridFocus);
}
$$.xgrid = d3.selectAll([]);
if (!config.grid_lines_front) { $$.initGridLines(); }
};
c3_chart_internal_fn.initGridLines = function () {
var $$ = this, d3 = $$.d3;
$$.gridLines = $$.main.append('g')
.attr("clip-path", $$.clipPathForGrid)
.attr('class', CLASS.grid + ' ' + CLASS.gridLines);
$$.gridLines.append('g').attr("class", CLASS.xgridLines);
$$.gridLines.append('g').attr('class', CLASS.ygridLines);
$$.xgridLines = d3.selectAll([]);
};
c3_chart_internal_fn.updateXGrid = function (withoutUpdate) {
var $$ = this, config = $$.config, d3 = $$.d3,
xgridData = $$.generateGridData(config.grid_x_type, $$.x),
tickOffset = $$.isCategorized() ? $$.xAxis.tickOffset() : 0;
$$.xgridAttr = config.axis_rotated ? {
'x1': 0,
'x2': $$.width,
'y1': function (d) { return $$.x(d) - tickOffset; },
'y2': function (d) { return $$.x(d) - tickOffset; }
} : {
'x1': function (d) { return $$.x(d) + tickOffset; },
'x2': function (d) { return $$.x(d) + tickOffset; },
'y1': 0,
'y2': $$.height
};
$$.xgrid = $$.main.select('.' + CLASS.xgrids).selectAll('.' + CLASS.xgrid)
.data(xgridData);
$$.xgrid.enter().append('line').attr("class", CLASS.xgrid);
if (!withoutUpdate) {
$$.xgrid.attr($$.xgridAttr)
.style("opacity", function () { return +d3.select(this).attr(config.axis_rotated ? 'y1' : 'x1') === (config.axis_rotated ? $$.height : 0) ? 0 : 1; });
}
$$.xgrid.exit().remove();
};
c3_chart_internal_fn.updateYGrid = function () {
var $$ = this, config = $$.config,
gridValues = $$.yAxis.tickValues() || $$.y.ticks(config.grid_y_ticks);
$$.ygrid = $$.main.select('.' + CLASS.ygrids).selectAll('.' + CLASS.ygrid)
.data(gridValues);
$$.ygrid.enter().append('line')
.attr('class', CLASS.ygrid);
$$.ygrid.attr("x1", config.axis_rotated ? $$.y : 0)
.attr("x2", config.axis_rotated ? $$.y : $$.width)
.attr("y1", config.axis_rotated ? 0 : $$.y)
.attr("y2", config.axis_rotated ? $$.height : $$.y);
$$.ygrid.exit().remove();
$$.smoothLines($$.ygrid, 'grid');
};
c3_chart_internal_fn.gridTextAnchor = function (d) {
return d.position ? d.position : "end";
};
c3_chart_internal_fn.gridTextDx = function (d) {
return d.position === 'start' ? 4 : d.position === 'middle' ? 0 : -4;
};
c3_chart_internal_fn.xGridTextX = function (d) {
return d.position === 'start' ? -this.height : d.position === 'middle' ? -this.height / 2 : 0;
};
c3_chart_internal_fn.yGridTextX = function (d) {
return d.position === 'start' ? 0 : d.position === 'middle' ? this.width / 2 : this.width;
};
c3_chart_internal_fn.updateGrid = function (duration) {
var $$ = this, main = $$.main, config = $$.config,
xgridLine, ygridLine, yv;
// hide if arc type
$$.grid.style('visibility', $$.hasArcType() ? 'hidden' : 'visible');
main.select('line.' + CLASS.xgridFocus).style("visibility", "hidden");
if (config.grid_x_show) {
$$.updateXGrid();
}
$$.xgridLines = main.select('.' + CLASS.xgridLines).selectAll('.' + CLASS.xgridLine)
.data(config.grid_x_lines);
// enter
xgridLine = $$.xgridLines.enter().append('g')
.attr("class", function (d) { return CLASS.xgridLine + (d['class'] ? ' ' + d['class'] : ''); });
xgridLine.append('line')
.style("opacity", 0);
xgridLine.append('text')
.attr("text-anchor", $$.gridTextAnchor)
.attr("transform", config.axis_rotated ? "" : "rotate(-90)")
.attr('dx', $$.gridTextDx)
.attr('dy', -5)
.style("opacity", 0);
// udpate
// done in d3.transition() of the end of this function
// exit
$$.xgridLines.exit().transition().duration(duration)
.style("opacity", 0)
.remove();
// Y-Grid
if (config.grid_y_show) {
$$.updateYGrid();
}
$$.ygridLines = main.select('.' + CLASS.ygridLines).selectAll('.' + CLASS.ygridLine)
.data(config.grid_y_lines);
// enter
ygridLine = $$.ygridLines.enter().append('g')
.attr("class", function (d) { return CLASS.ygridLine + (d['class'] ? ' ' + d['class'] : ''); });
ygridLine.append('line')
.style("opacity", 0);
ygridLine.append('text')
.attr("text-anchor", $$.gridTextAnchor)
.attr("transform", config.axis_rotated ? "rotate(-90)" : "")
.attr('dx', $$.gridTextDx)
.attr('dy', -5)
.style("opacity", 0);
// update
yv = $$.yv.bind($$);
$$.ygridLines.select('line')
.transition().duration(duration)
.attr("x1", config.axis_rotated ? yv : 0)
.attr("x2", config.axis_rotated ? yv : $$.width)
.attr("y1", config.axis_rotated ? 0 : yv)
.attr("y2", config.axis_rotated ? $$.height : yv)
.style("opacity", 1);
$$.ygridLines.select('text')
.transition().duration(duration)
.attr("x", config.axis_rotated ? $$.xGridTextX.bind($$) : $$.yGridTextX.bind($$))
.attr("y", yv)
.text(function (d) { return d.text; })
.style("opacity", 1);
// exit
$$.ygridLines.exit().transition().duration(duration)
.style("opacity", 0)
.remove();
};
c3_chart_internal_fn.redrawGrid = function (withTransition) {
var $$ = this, config = $$.config, xv = $$.xv.bind($$),
lines = $$.xgridLines.select('line'),
texts = $$.xgridLines.select('text');
return [
(withTransition ? lines.transition() : lines)
.attr("x1", config.axis_rotated ? 0 : xv)
.attr("x2", config.axis_rotated ? $$.width : xv)
.attr("y1", config.axis_rotated ? xv : 0)
.attr("y2", config.axis_rotated ? xv : $$.height)
.style("opacity", 1),
(withTransition ? texts.transition() : texts)
.attr("x", config.axis_rotated ? $$.yGridTextX.bind($$) : $$.xGridTextX.bind($$))
.attr("y", xv)
.text(function (d) { return d.text; })
.style("opacity", 1)
];
};
c3_chart_internal_fn.showXGridFocus = function (selectedData) {
var $$ = this, config = $$.config,
dataToShow = selectedData.filter(function (d) { return d && isValue(d.value); }),
focusEl = $$.main.selectAll('line.' + CLASS.xgridFocus),
xx = $$.xx.bind($$);
if (! config.tooltip_show) { return; }
// Hide when scatter plot exists
if ($$.hasType('scatter') || $$.hasArcType()) { return; }
focusEl
.style("visibility", "visible")
.data([dataToShow[0]])
.attr(config.axis_rotated ? 'y1' : 'x1', xx)
.attr(config.axis_rotated ? 'y2' : 'x2', xx);
$$.smoothLines(focusEl, 'grid');
};
c3_chart_internal_fn.hideXGridFocus = function () {
this.main.select('line.' + CLASS.xgridFocus).style("visibility", "hidden");
};
c3_chart_internal_fn.updateXgridFocus = function () {
var $$ = this, config = $$.config;
$$.main.select('line.' + CLASS.xgridFocus)
.attr("x1", config.axis_rotated ? 0 : -10)
.attr("x2", config.axis_rotated ? $$.width : -10)
.attr("y1", config.axis_rotated ? -10 : 0)
.attr("y2", config.axis_rotated ? -10 : $$.height);
};
c3_chart_internal_fn.generateGridData = function (type, scale) {
var $$ = this,
gridData = [], xDomain, firstYear, lastYear, i,
tickNum = $$.main.select("." + CLASS.axisX).selectAll('.tick').size();
if (type === 'year') {
xDomain = $$.getXDomain();
firstYear = xDomain[0].getFullYear();
lastYear = xDomain[1].getFullYear();
for (i = firstYear; i <= lastYear; i++) {
gridData.push(new Date(i + '-01-01 00:00:00'));
}
} else {
gridData = scale.ticks(10);
if (gridData.length > tickNum) { // use only int
gridData = gridData.filter(function (d) { return ("" + d).indexOf('.') < 0; });
}
}
return gridData;
};
c3_chart_internal_fn.getGridFilterToRemove = function (params) {
return params ? function (line) {
var found = false;
[].concat(params).forEach(function (param) {
if ((('value' in param && line.value === param.value) || ('class' in param && line['class'] === param['class']))) {
found = true;
}
});
return found;
} : function () { return true; };
};
c3_chart_internal_fn.removeGridLines = function (params, forX) {
var $$ = this, config = $$.config,
toRemove = $$.getGridFilterToRemove(params),
toShow = function (line) { return !toRemove(line); },
classLines = forX ? CLASS.xgridLines : CLASS.ygridLines,
classLine = forX ? CLASS.xgridLine : CLASS.ygridLine;
$$.main.select('.' + classLines).selectAll('.' + classLine).filter(toRemove)
.transition().duration(config.transition_duration)
.style('opacity', 0).remove();
if (forX) {
config.grid_x_lines = config.grid_x_lines.filter(toShow);
} else {
config.grid_y_lines = config.grid_y_lines.filter(toShow);
}
};
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