Common style channels (#490)

* common style channels

* common styles via mark constructor

* common styles for lines

* common styles for bars and cells

* common styles for rects

* common styles for ticks

* common styles for rules

* common styles for links

* test frame

* common styles for frames

* common styles for dots

* common styles for texts

* remove obsolete Style function

* filter common styles

* values ↦ applyScales

* prettier

* filter facets (and centralize the filtering of common styles in style.js)

* normalize fill and stroke defaults

* move applyScales

* test frame stroke and fill

Co-authored-by: Philippe Rivière <fil@rezo.net>

Author: mbostock

src/facet.js

@@ -1,6 +1,8 @@
 import {cross, difference, groups, InternMap} from "d3";
 import {create} from "d3";
-import {Mark, values, first, second} from "./mark.js";
+import {Mark, first, second} from "./mark.js";
+import {applyScales} from "./scales.js";
+import {filterStyles} from "./style.js";
 
 export function facets(data, {x, y, ...options}, marks) {
   return x === undefined && y === undefined
@@ -76,7 +78,7 @@ class Facet extends Mark {
     const fyMargins = fy && {marginTop: 0, marginBottom: 0, height: fy.bandwidth()};
     const fxMargins = fx && {marginRight: 0, marginLeft: 0, width: fx.bandwidth()};
     const subdimensions = {...dimensions, ...fxMargins, ...fyMargins};
-    const marksValues = marksChannels.map(channels => values(channels, scales));
+    const marksValues = marksChannels.map(channels => applyScales(channels, scales));
     return create("svg:g")
         .call(g => {
           if (fy && axes.y) {
@@ -110,10 +112,12 @@ class Facet extends Mark {
             .each(function(key) {
               const marksFacetIndex = marksIndexByFacet.get(key) || marksIndex;
               for (let i = 0; i < marks.length; ++i) {
+                const values = marksValues[i];
+                const index = filterStyles(marksFacetIndex[i], values);
                 const node = marks[i].render(
-                  marksFacetIndex[i],
+                  index,
                   scales,
-                  marksValues[i],
+                  values,
                   subdimensions
                 );
                 if (node != null) this.appendChild(node);

src/mark.js

@@ -1,18 +1,21 @@
 import {color} from "d3";
 import {ascendingDefined, nonempty} from "./defined.js";
 import {plot} from "./plot.js";
+import {styles} from "./style.js";
 
 // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/TypedArray
 const TypedArray = Object.getPrototypeOf(Uint8Array);
 const objectToString = Object.prototype.toString;
 
 export class Mark {
-  constructor(data, channels = [], {facet = "auto", ...options} = {}) {
+  constructor(data, channels = [], options = {}, defaults) {
+    const {facet = "auto"} = options;
     const names = new Set();
     this.data = data;
     this.facet = facet ? keyword(facet === true ? "include" : facet, "facet", ["auto", "include", "exclude"]) : null;
     const {transform} = maybeTransform(options);
     this.transform = transform;
+    if (defaults !== undefined) channels = styles(this, options, channels, defaults);
     this.channels = channels.filter(channel => {
       const {name, value, optional} = channel;
       if (value == null) {
@@ -309,23 +312,6 @@ export function numberChannel(source) {
   };
 }
 
-// TODO use Float64Array.from for position and radius scales?
-export function values(channels = [], scales) {
-  const values = Object.create(null);
-  for (let [name, {value, scale}] of channels) {
-    if (name !== undefined) {
-      if (scale !== undefined) {
-        scale = scales[scale];
-        if (scale !== undefined) {
-          value = Array.from(value, scale);
-        }
-      }
-      values[name] = value;
-    }
-  }
-  return values;
-}
-
 export function isOrdinal(values) {
   for (const value of values) {
     if (value == null) continue;

src/marks/area.js

@@ -1,83 +1,49 @@
-import {group} from "d3";
-import {create} from "d3";
-import {area as shapeArea} from "d3";
+import {area as shapeArea, create, group} from "d3";
 import {Curve} from "../curve.js";
 import {defined} from "../defined.js";
-import {Mark, indexOf, maybeColor, titleGroup, maybeNumber} from "../mark.js";
-import {Style, applyDirectStyles, applyIndirectStyles, applyTransform, applyAttr} from "../style.js";
+import {Mark, indexOf, maybeZ} from "../mark.js";
+import {applyDirectStyles, applyIndirectStyles, applyTransform, applyGroupedChannelStyles} from "../style.js";
 import {maybeStackX, maybeStackY} from "../transforms/stack.js";
 
+const defaults = {
+  strokeWidth: 1,
+  strokeMiterlimit: 1
+};
+
 export class Area extends Mark {
-  constructor(
-    data,
-    {
-      x1,
-      y1,
-      x2,
-      y2,
-      z, // optional grouping for multiple series
-      title,
-      fill,
-      fillOpacity,
-      stroke,
-      strokeOpacity,
-      curve,
-      tension,
-      ...options
-    } = {}
-  ) {
-    const [vstroke, cstroke] = maybeColor(stroke, "none");
-    const [vstrokeOpacity, cstrokeOpacity] = maybeNumber(strokeOpacity);
-    const [vfill, cfill] = maybeColor(fill, cstroke === "none" ? "currentColor" : "none");
-    const [vfillOpacity, cfillOpacity] = maybeNumber(fillOpacity);
-    if (z === undefined && vfill != null) z = vfill;
-    if (z === undefined && vstroke != null) z = vstroke;
+  constructor(data, options = {}) {
+    const {x1, y1, x2, y2, curve, tension} = options;
     super(
       data,
       [
         {name: "x1", value: x1, scale: "x"},
         {name: "y1", value: y1, scale: "y"},
         {name: "x2", value: x2, scale: "x", optional: true},
         {name: "y2", value: y2, scale: "y", optional: true},
-        {name: "z", value: z, optional: true},
-        {name: "title", value: title, optional: true},
-        {name: "fill", value: vfill, scale: "color", optional: true},
-        {name: "fillOpacity", value: vfillOpacity, scale: "opacity", optional: true},
-        {name: "stroke", value: vstroke, scale: "color", optional: true},
-        {name: "strokeOpacity", value: vstrokeOpacity, scale: "opacity", optional: true}
+        {name: "z", value: maybeZ(options), optional: true}
       ],
-      options
+      options,
+      defaults
     );
     this.curve = Curve(curve, tension);
-    Style(this, {
-      fill: cfill,
-      fillOpacity: cfillOpacity,
-      stroke: cstroke,
-      strokeMiterlimit: cstroke === "none" ? undefined : 1,
-      strokeOpacity: cstrokeOpacity,
-      ...options
-    });
   }
-  render(I, {x, y}, {x1: X1, y1: Y1, x2: X2 = X1, y2: Y2 = Y1, z: Z, title: L, fill: F, fillOpacity: FO, stroke: S, strokeOpacity: SO}) {
+  render(I, {x, y}, channels) {
+    const {x1: X1, y1: Y1, x2: X2 = X1, y2: Y2 = Y1, z: Z} = channels;
     return create("svg:g")
         .call(applyIndirectStyles, this)
         .call(applyTransform, x, y)
         .call(g => g.selectAll()
           .data(Z ? group(I, i => Z[i]).values() : [I])
           .join("path")
             .call(applyDirectStyles, this)
-            .call(applyAttr, "fill", F && (([i]) => F[i]))
-            .call(applyAttr, "fill-opacity", FO && (([i]) => FO[i]))
-            .call(applyAttr, "stroke", S && (([i]) => S[i]))
-            .call(applyAttr, "stroke-opacity", SO && (([i]) => SO[i]))
+            .call(applyGroupedChannelStyles, channels)
             .attr("d", shapeArea()
               .curve(this.curve)
               .defined(i => defined(X1[i]) && defined(Y1[i]) && defined(X2[i]) && defined(Y2[i]))
               .x0(i => X1[i])
               .y0(i => Y1[i])
               .x1(i => X2[i])
-              .y1(i => Y2[i]))
-            .call(titleGroup(L)))
+              .y1(i => Y2[i])))
       .node();
   }
 }

src/marks/bar.js

@@ -1,52 +1,15 @@
 import {create} from "d3";
 import {filter} from "../defined.js";
-import {Mark, number, maybeColor, title, maybeNumber} from "../mark.js";
-import {Style, applyDirectStyles, applyIndirectStyles, applyTransform, impliedString, applyAttr} from "../style.js";
+import {Mark, number} from "../mark.js";
+import {applyDirectStyles, applyIndirectStyles, applyTransform, impliedString, applyAttr, applyChannelStyles} from "../style.js";
 import {maybeStackX, maybeStackY} from "../transforms/stack.js";
 
+const defaults = {};
+
 export class AbstractBar extends Mark {
-  constructor(
-    data,
-    channels,
-    {
-      title,
-      fill,
-      fillOpacity,
-      stroke,
-      strokeOpacity,
-      inset = 0,
-      insetTop = inset,
-      insetRight = inset,
-      insetBottom = inset,
-      insetLeft = inset,
-      rx,
-      ry,
-      ...options
-    } = {}
-  ) {
-    const [vstroke, cstroke] = maybeColor(stroke, "none");
-    const [vstrokeOpacity, cstrokeOpacity] = maybeNumber(strokeOpacity);
-    const [vfill, cfill] = maybeColor(fill, cstroke === "none" ? "currentColor" : "none");
-    const [vfillOpacity, cfillOpacity] = maybeNumber(fillOpacity);
-    super(
-      data,
-      [
-        ...channels,
-        {name: "title", value: title, optional: true},
-        {name: "fill", value: vfill, scale: "color", optional: true},
-        {name: "fillOpacity", value: vfillOpacity, scale: "opacity", optional: true},
-        {name: "stroke", value: vstroke, scale: "color", optional: true},
-        {name: "strokeOpacity", value: vstrokeOpacity, scale: "opacity", optional: true}
-      ],
-      options
-    );
-    Style(this, {
-      fill: cfill,
-      fillOpacity: cfillOpacity,
-      stroke: cstroke,
-      strokeOpacity: cstrokeOpacity,
-      ...options
-    });
+  constructor(data, channels, options = {}) {
+    super(data, channels, options, defaults);
+    const {inset = 0, insetTop = inset, insetRight = inset, insetBottom = inset, insetLeft = inset, rx, ry} = options;
     this.insetTop = number(insetTop);
     this.insetRight = number(insetRight);
     this.insetBottom = number(insetBottom);
@@ -56,8 +19,7 @@ export class AbstractBar extends Mark {
   }
   render(I, scales, channels, dimensions) {
     const {rx, ry} = this;
-    const {title: L, fill: F, fillOpacity: FO, stroke: S, strokeOpacity: SO} = channels;
-    const index = filter(I, ...this._positions(channels), F, FO, S, SO);
+    const index = filter(I, ...this._positions(channels));
     return create("svg:g")
         .call(applyIndirectStyles, this)
         .call(this._transform, scales)
@@ -69,13 +31,9 @@ export class AbstractBar extends Mark {
             .attr("width", this._width(scales, channels, dimensions))
             .attr("y", this._y(scales, channels, dimensions))
             .attr("height", this._height(scales, channels, dimensions))
-            .call(applyAttr, "fill", F && (i => F[i]))
-            .call(applyAttr, "fill-opacity", FO && (i => FO[i]))
-            .call(applyAttr, "stroke", S && (i => S[i]))
-            .call(applyAttr, "stroke-opacity", SO && (i => SO[i]))
             .call(applyAttr, "rx", rx)
             .call(applyAttr, "ry", ry)
-            .call(title(L)))
+            .call(applyChannelStyles, channels))
       .node();
   }
   _x(scales, {x: X}, {marginLeft}) {
@@ -99,7 +57,8 @@ export class AbstractBar extends Mark {
 }
 
 export class BarX extends AbstractBar {
-  constructor(data, {x1, x2, y, ...options} = {}) {
+  constructor(data, options = {}) {
+    const {x1, x2, y} = options;
     super(
       data,
       [
@@ -127,7 +86,8 @@ export class BarX extends AbstractBar {
 }
 
 export class BarY extends AbstractBar {
-  constructor(data, {x, y1, y2, ...options} = {}) {
+  constructor(data, options = {}) {
+    const {x, y1, y2} = options;
     super(
       data,
       [

src/marks/dot.js

@@ -1,59 +1,38 @@
 import {create} from "d3";
 import {filter, positive} from "../defined.js";
-import {Mark, identity, maybeColor, maybeNumber, maybeTuple, title} from "../mark.js";
-import {Style, applyDirectStyles, applyIndirectStyles, applyTransform, applyAttr} from "../style.js";
+import {Mark, identity, maybeNumber, maybeTuple} from "../mark.js";
+import {applyChannelStyles, applyDirectStyles, applyIndirectStyles, applyTransform} from "../style.js";
+
+const defaults = {
+  fill: "none",
+  stroke: "currentColor",
+  strokeWidth: 1.5
+};
 
 export class Dot extends Mark {
-  constructor(
-    data,
-    {
-      x,
-      y,
-      r,
-      title,
-      fill,
-      fillOpacity,
-      stroke,
-      strokeOpacity,
-      ...options
-    } = {}
-  ) {
+  constructor(data, options = {}) {
+    const {x, y, r} = options;
     const [vr, cr] = maybeNumber(r, 3);
-    const [vfill, cfill] = maybeColor(fill, "none");
-    const [vfillOpacity, cfillOpacity] = maybeNumber(fillOpacity);
-    const [vstroke, cstroke] = maybeColor(stroke, cfill === "none" ? "currentColor" : "none");
-    const [vstrokeOpacity, cstrokeOpacity] = maybeNumber(strokeOpacity);
     super(
       data,
       [
         {name: "x", value: x, scale: "x", optional: true},
         {name: "y", value: y, scale: "y", optional: true},
-        {name: "r", value: vr, scale: "r", optional: true},
-        {name: "title", value: title, optional: true},
-        {name: "fill", value: vfill, scale: "color", optional: true},
-        {name: "fillOpacity", value: vfillOpacity, scale: "opacity", optional: true},
-        {name: "stroke", value: vstroke, scale: "color", optional: true},
-        {name: "strokeOpacity", value: vstrokeOpacity, scale: "opacity", optional: true}
+        {name: "r", value: vr, scale: "r", optional: true}
       ],
-      options
+      options,
+      defaults
     );
     this.r = cr;
-    Style(this, {
-      fill: cfill,
-      fillOpacity: cfillOpacity,
-      stroke: cstroke,
-      strokeOpacity: cstrokeOpacity,
-      strokeWidth: cstroke === "none" ? undefined : 1.5,
-      ...options
-    });
   }
   render(
     I,
     {x, y},
-    {x: X, y: Y, r: R, title: L, fill: F, fillOpacity: FO, stroke: S, strokeOpacity: SO},
+    channels,
     {width, height, marginTop, marginRight, marginBottom, marginLeft}
   ) {
-    let index = filter(I, X, Y, F, FO, S, SO);
+    const {x: X, y: Y, r: R} = channels;
+    let index = filter(I, X, Y);
     if (R) index = index.filter(i => positive(R[i]));
     return create("svg:g")
         .call(applyIndirectStyles, this)
@@ -65,11 +44,7 @@ export class Dot extends Mark {
             .attr("cx", X ? i => X[i] : (marginLeft + width - marginRight) / 2)
             .attr("cy", Y ? i => Y[i] : (marginTop + height - marginBottom) / 2)
             .attr("r", R ? i => R[i] : this.r)
-            .call(applyAttr, "fill", F && (i => F[i]))
-            .call(applyAttr, "fill-opacity", FO && (i => FO[i]))
-            .call(applyAttr, "stroke", S && (i => S[i]))
-            .call(applyAttr, "stroke-opacity", SO && (i => SO[i]))
-            .call(title(L)))
+            .call(applyChannelStyles, channels))
       .node();
   }
 }