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Copy pathscale.js
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165 lines (141 loc) · 4.58 KB
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import "../arrays/bisect";
import "../arrays/range";
import "../core/rebind";
import "../core/true";
import "../scale/linear";
import "../scale/nice";
import "day";
import "format";
import "hour";
import "minute";
import "month";
import "second";
import "time";
import "week";
import "year";
function d3_time_scale(linear, methods, format) {
function scale(x) {
return linear(x);
}
scale.invert = function(x) {
return d3_time_scaleDate(linear.invert(x));
};
scale.domain = function(x) {
if (!arguments.length) return linear.domain().map(d3_time_scaleDate);
linear.domain(x);
return scale;
};
function tickMethod(extent, count) {
var span = extent[1] - extent[0],
target = span / count,
i = d3.bisect(d3_time_scaleSteps, target);
return i == d3_time_scaleSteps.length ? [methods.year, d3_scale_linearTickRange(extent.map(function(d) { return d / 31536e6; }), count)[2]]
: !i ? [d3_time_scaleMilliseconds, d3_scale_linearTickRange(extent, count)[2]]
: methods[target / d3_time_scaleSteps[i - 1] < d3_time_scaleSteps[i] / target ? i - 1 : i];
}
scale.nice = function(interval, skip) {
var domain = scale.domain(),
extent = d3_scaleExtent(domain),
method = interval == null ? tickMethod(extent, 10)
: typeof interval === "number" && tickMethod(extent, interval);
if (method) interval = method[0], skip = method[1];
function skipped(date) {
return !isNaN(date) && !interval.range(date, d3_time_scaleDate(+date + 1), skip).length;
}
return scale.domain(d3_scale_nice(domain, skip > 1 ? {
floor: function(date) {
while (skipped(date = interval.floor(date))) date = d3_time_scaleDate(date - 1);
return date;
},
ceil: function(date) {
while (skipped(date = interval.ceil(date))) date = d3_time_scaleDate(+date + 1);
return date;
}
} : interval));
};
scale.ticks = function(interval, skip) {
var extent = d3_scaleExtent(scale.domain()),
method = interval == null ? tickMethod(extent, 10)
: typeof interval === "number" ? tickMethod(extent, interval)
: !interval.range && [{range: interval}, skip]; // assume deprecated range function
if (method) interval = method[0], skip = method[1];
return interval.range(extent[0], d3_time_scaleDate(+extent[1] + 1), skip); // inclusive upper bound
};
scale.tickFormat = function() {
return format;
};
scale.copy = function() {
return d3_time_scale(linear.copy(), methods, format);
};
return d3_scale_linearRebind(scale, linear);
}
function d3_time_scaleDate(t) {
return new Date(t);
}
function d3_time_scaleFormat(formats) {
return function(date) {
var i = formats.length - 1, f = formats[i];
while (!f[1](date)) f = formats[--i];
return f[0](date);
};
}
var d3_time_scaleSteps = [
1e3, // 1-second
5e3, // 5-second
15e3, // 15-second
3e4, // 30-second
6e4, // 1-minute
3e5, // 5-minute
9e5, // 15-minute
18e5, // 30-minute
36e5, // 1-hour
108e5, // 3-hour
216e5, // 6-hour
432e5, // 12-hour
864e5, // 1-day
1728e5, // 2-day
6048e5, // 1-week
2592e6, // 1-month
7776e6, // 3-month
31536e6 // 1-year
];
var d3_time_scaleLocalMethods = [
[d3_time.second, 1],
[d3_time.second, 5],
[d3_time.second, 15],
[d3_time.second, 30],
[d3_time.minute, 1],
[d3_time.minute, 5],
[d3_time.minute, 15],
[d3_time.minute, 30],
[d3_time.hour, 1],
[d3_time.hour, 3],
[d3_time.hour, 6],
[d3_time.hour, 12],
[d3_time.day, 1],
[d3_time.day, 2],
[d3_time.week, 1],
[d3_time.month, 1],
[d3_time.month, 3],
[d3_time.year, 1]
];
var d3_time_scaleLocalFormats = [
[d3_time_format("%Y"), d3_true],
[d3_time_format("%B"), function(d) { return d.getMonth(); }],
[d3_time_format("%b %d"), function(d) { return d.getDate() != 1; }],
[d3_time_format("%a %d"), function(d) { return d.getDay() && d.getDate() != 1; }],
[d3_time_format("%I %p"), function(d) { return d.getHours(); }],
[d3_time_format("%I:%M"), function(d) { return d.getMinutes(); }],
[d3_time_format(":%S"), function(d) { return d.getSeconds(); }],
[d3_time_format(".%L"), function(d) { return d.getMilliseconds(); }]
];
var d3_time_scaleLocalFormat = d3_time_scaleFormat(d3_time_scaleLocalFormats);
d3_time_scaleLocalMethods.year = d3_time.year;
d3_time.scale = function() {
return d3_time_scale(d3.scale.linear(), d3_time_scaleLocalMethods, d3_time_scaleLocalFormat);
};
var d3_time_scaleMilliseconds = {
range: function(start, stop, step) {
return d3.range(+start, +stop, step).map(d3_time_scaleDate);
}
};