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* Introduce AxisInternal * Fix c3.axis import * Fix lint * Fix axis tick multiline * Fix spec for axis tick multiline * Change 23023$ to internal * Use class and extend instead of inheritpull/2152/head
Masayuki Tanaka
7 years ago
committed by
Yoshiya Hinosawa
8 changed files with 855 additions and 748 deletions
File diff suppressed because one or more lines are too long
@ -1,330 +0,0 @@
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// Features:
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// 1. category axis
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// 2. ceil values of translate/x/y to int for half pixel antialiasing
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// 3. multiline tick text
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var tickTextCharSize; |
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export default function c3_axis(d3, params) { |
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var scale = d3.scale.linear(), orient = "bottom", innerTickSize = 6, outerTickSize, tickPadding = 3, tickValues = null, tickFormat, tickArguments; |
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var tickOffset = 0, tickCulling = true, tickCentered; |
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params = params || {}; |
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outerTickSize = params.withOuterTick ? 6 : 0; |
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function axisX(selection, x) { |
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selection.attr("transform", function (d) { |
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return "translate(" + Math.ceil(x(d) + tickOffset) + ", 0)"; |
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}); |
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} |
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function axisY(selection, y) { |
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selection.attr("transform", function (d) { |
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return "translate(0," + Math.ceil(y(d)) + ")"; |
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}); |
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} |
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function scaleExtent(domain) { |
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var start = domain[0], stop = domain[domain.length - 1]; |
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return start < stop ? [ start, stop ] : [ stop, start ]; |
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} |
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function generateTicks(scale) { |
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var i, domain, ticks = []; |
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if (scale.ticks) { |
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return scale.ticks.apply(scale, tickArguments); |
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} |
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domain = scale.domain(); |
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for (i = Math.ceil(domain[0]); i < domain[1]; i++) { |
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ticks.push(i); |
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} |
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if (ticks.length > 0 && ticks[0] > 0) { |
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ticks.unshift(ticks[0] - (ticks[1] - ticks[0])); |
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} |
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return ticks; |
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} |
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function copyScale() { |
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var newScale = scale.copy(), domain; |
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if (params.isCategory) { |
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domain = scale.domain(); |
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newScale.domain([domain[0], domain[1] - 1]); |
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} |
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return newScale; |
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} |
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function textFormatted(v) { |
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var formatted = tickFormat ? tickFormat(v) : v; |
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return typeof formatted !== 'undefined' ? formatted : ''; |
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} |
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function getSizeFor1Char(tick) { |
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if (tickTextCharSize) { |
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return tickTextCharSize; |
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} |
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var size = { |
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h: 11.5, |
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w: 5.5 |
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}; |
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tick.select('text').text(textFormatted).each(function (d) { |
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var box = this.getBoundingClientRect(), |
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text = textFormatted(d), |
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h = box.height, |
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w = text ? (box.width / text.length) : undefined; |
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if (h && w) { |
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size.h = h; |
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size.w = w; |
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} |
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}).text(''); |
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tickTextCharSize = size; |
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return size; |
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} |
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function transitionise(selection) { |
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return params.withoutTransition ? selection : d3.transition(selection); |
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} |
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function axis(g) { |
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g.each(function () { |
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var g = axis.g = d3.select(this); |
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var scale0 = this.__chart__ || scale, scale1 = this.__chart__ = copyScale(); |
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var ticks = tickValues ? tickValues : generateTicks(scale1), |
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tick = g.selectAll(".tick").data(ticks, scale1), |
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tickEnter = tick.enter().insert("g", ".domain").attr("class", "tick").style("opacity", 1e-6), |
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// MEMO: No exit transition. The reason is this transition affects max tick width calculation because old tick will be included in the ticks.
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tickExit = tick.exit().remove(), |
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tickUpdate = transitionise(tick).style("opacity", 1), |
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tickTransform, tickX, tickY; |
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var range = scale.rangeExtent ? scale.rangeExtent() : scaleExtent(scale.range()), |
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path = g.selectAll(".domain").data([ 0 ]), |
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pathUpdate = (path.enter().append("path").attr("class", "domain"), transitionise(path)); |
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tickEnter.append("line"); |
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tickEnter.append("text"); |
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var lineEnter = tickEnter.select("line"), |
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lineUpdate = tickUpdate.select("line"), |
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textEnter = tickEnter.select("text"), |
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textUpdate = tickUpdate.select("text"); |
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if (params.isCategory) { |
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tickOffset = Math.ceil((scale1(1) - scale1(0)) / 2); |
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tickX = tickCentered ? 0 : tickOffset; |
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tickY = tickCentered ? tickOffset : 0; |
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} else { |
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tickOffset = tickX = 0; |
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} |
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var text, tspan, sizeFor1Char = getSizeFor1Char(g.select('.tick')), counts = []; |
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var tickLength = Math.max(innerTickSize, 0) + tickPadding, |
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isVertical = orient === 'left' || orient === 'right'; |
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// this should be called only when category axis
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function splitTickText(d, maxWidth) { |
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var tickText = textFormatted(d), |
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subtext, spaceIndex, textWidth, splitted = []; |
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if (Object.prototype.toString.call(tickText) === "[object Array]") { |
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return tickText; |
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} |
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if (!maxWidth || maxWidth <= 0) { |
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maxWidth = isVertical ? 95 : params.isCategory ? (Math.ceil(scale1(ticks[1]) - scale1(ticks[0])) - 12) : 110; |
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} |
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function split(splitted, text) { |
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spaceIndex = undefined; |
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for (var i = 1; i < text.length; i++) { |
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if (text.charAt(i) === ' ') { |
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spaceIndex = i; |
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} |
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subtext = text.substr(0, i + 1); |
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textWidth = sizeFor1Char.w * subtext.length; |
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// if text width gets over tick width, split by space index or crrent index
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if (maxWidth < textWidth) { |
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return split( |
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splitted.concat(text.substr(0, spaceIndex ? spaceIndex : i)), |
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text.slice(spaceIndex ? spaceIndex + 1 : i) |
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); |
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} |
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} |
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return splitted.concat(text); |
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} |
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return split(splitted, tickText + ""); |
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} |
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function tspanDy(d, i) { |
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var dy = sizeFor1Char.h; |
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if (i === 0) { |
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if (orient === 'left' || orient === 'right') { |
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dy = -((counts[d.index] - 1) * (sizeFor1Char.h / 2) - 3); |
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} else { |
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dy = ".71em"; |
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} |
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} |
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return dy; |
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} |
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function tickSize(d) { |
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var tickPosition = scale(d) + (tickCentered ? 0 : tickOffset); |
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return range[0] < tickPosition && tickPosition < range[1] ? innerTickSize : 0; |
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} |
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text = tick.select("text"); |
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tspan = text.selectAll('tspan') |
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.data(function (d, i) { |
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var splitted = params.tickMultiline ? splitTickText(d, params.tickWidth) : [].concat(textFormatted(d)); |
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counts[i] = splitted.length; |
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return splitted.map(function (s) { |
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return { index: i, splitted: s }; |
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}); |
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}); |
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tspan.enter().append('tspan'); |
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tspan.exit().remove(); |
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tspan.text(function (d) { return d.splitted; }); |
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var rotate = params.tickTextRotate; |
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function textAnchorForText(rotate) { |
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if (!rotate) { |
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return 'middle'; |
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} |
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return rotate > 0 ? "start" : "end"; |
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} |
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function textTransform(rotate) { |
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if (!rotate) { |
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return ''; |
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} |
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return "rotate(" + rotate + ")"; |
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} |
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function dxForText(rotate) { |
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if (!rotate) { |
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return 0; |
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} |
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return 8 * Math.sin(Math.PI * (rotate / 180)); |
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} |
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function yForText(rotate) { |
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if (!rotate) { |
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return tickLength; |
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} |
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return 11.5 - 2.5 * (rotate / 15) * (rotate > 0 ? 1 : -1); |
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} |
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switch (orient) { |
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case "bottom": |
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{ |
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tickTransform = axisX; |
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lineEnter.attr("y2", innerTickSize); |
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textEnter.attr("y", tickLength); |
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lineUpdate.attr("x1", tickX).attr("x2", tickX).attr("y2", tickSize); |
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textUpdate.attr("x", 0).attr("y", yForText(rotate)) |
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.style("text-anchor", textAnchorForText(rotate)) |
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.attr("transform", textTransform(rotate)); |
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tspan.attr('x', 0).attr("dy", tspanDy).attr('dx', dxForText(rotate)); |
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pathUpdate.attr("d", "M" + range[0] + "," + outerTickSize + "V0H" + range[1] + "V" + outerTickSize); |
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break; |
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} |
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case "top": |
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{ |
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// TODO: rotated tick text
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tickTransform = axisX; |
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lineEnter.attr("y2", -innerTickSize); |
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textEnter.attr("y", -tickLength); |
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lineUpdate.attr("x2", 0).attr("y2", -innerTickSize); |
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textUpdate.attr("x", 0).attr("y", -tickLength); |
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text.style("text-anchor", "middle"); |
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tspan.attr('x', 0).attr("dy", "0em"); |
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pathUpdate.attr("d", "M" + range[0] + "," + -outerTickSize + "V0H" + range[1] + "V" + -outerTickSize); |
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break; |
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} |
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case "left": |
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{ |
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tickTransform = axisY; |
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lineEnter.attr("x2", -innerTickSize); |
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textEnter.attr("x", -tickLength); |
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lineUpdate.attr("x2", -innerTickSize).attr("y1", tickY).attr("y2", tickY); |
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textUpdate.attr("x", -tickLength).attr("y", tickOffset); |
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text.style("text-anchor", "end"); |
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tspan.attr('x', -tickLength).attr("dy", tspanDy); |
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pathUpdate.attr("d", "M" + -outerTickSize + "," + range[0] + "H0V" + range[1] + "H" + -outerTickSize); |
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break; |
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} |
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case "right": |
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{ |
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tickTransform = axisY; |
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lineEnter.attr("x2", innerTickSize); |
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textEnter.attr("x", tickLength); |
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lineUpdate.attr("x2", innerTickSize).attr("y2", 0); |
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textUpdate.attr("x", tickLength).attr("y", 0); |
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text.style("text-anchor", "start"); |
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tspan.attr('x', tickLength).attr("dy", tspanDy); |
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pathUpdate.attr("d", "M" + outerTickSize + "," + range[0] + "H0V" + range[1] + "H" + outerTickSize); |
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break; |
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} |
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} |
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if (scale1.rangeBand) { |
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var x = scale1, dx = x.rangeBand() / 2; |
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scale0 = scale1 = function (d) { |
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return x(d) + dx; |
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}; |
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} else if (scale0.rangeBand) { |
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scale0 = scale1; |
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} else { |
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tickExit.call(tickTransform, scale1); |
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} |
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tickEnter.call(tickTransform, scale0); |
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tickUpdate.call(tickTransform, scale1); |
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}); |
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} |
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axis.scale = function (x) { |
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if (!arguments.length) { return scale; } |
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scale = x; |
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return axis; |
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}; |
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axis.orient = function (x) { |
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if (!arguments.length) { return orient; } |
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orient = x in {top: 1, right: 1, bottom: 1, left: 1} ? x + "" : "bottom"; |
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return axis; |
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}; |
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axis.tickFormat = function (format) { |
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if (!arguments.length) { return tickFormat; } |
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tickFormat = format; |
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return axis; |
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}; |
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axis.tickCentered = function (isCentered) { |
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if (!arguments.length) { return tickCentered; } |
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tickCentered = isCentered; |
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return axis; |
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}; |
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axis.tickOffset = function () { |
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return tickOffset; |
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}; |
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axis.tickInterval = function () { |
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var interval, length; |
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if (params.isCategory) { |
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interval = tickOffset * 2; |
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} |
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else { |
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length = axis.g.select('path.domain').node().getTotalLength() - outerTickSize * 2; |
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interval = length / axis.g.selectAll('line').size(); |
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} |
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return interval === Infinity ? 0 : interval; |
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}; |
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axis.ticks = function () { |
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if (!arguments.length) { return tickArguments; } |
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tickArguments = arguments; |
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return axis; |
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}; |
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axis.tickCulling = function (culling) { |
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if (!arguments.length) { return tickCulling; } |
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tickCulling = culling; |
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return axis; |
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}; |
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axis.tickValues = function (x) { |
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if (typeof x === 'function') { |
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tickValues = function () { |
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return x(scale.domain()); |
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}; |
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} |
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else { |
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if (!arguments.length) { return tickValues; } |
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tickValues = x; |
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} |
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return axis; |
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}; |
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return axis; |
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} |
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