@swimlane/ngx-charts
Version:
Declarative Charting Framework for Angular
219 lines (217 loc) • 24.6 kB
JavaScript
import { isPlatformBrowser } from '@angular/common';
import { Component, Input, Output, EventEmitter, ViewChild, ChangeDetectionStrategy, Inject, PLATFORM_ID } from '@angular/core';
import { trimLabel } from '../trim-label.helper';
import { reduceTicks } from './ticks.helper';
import { TextAnchor } from '../types/text-anchor.enum';
import * as i0 from "@angular/core";
import * as i1 from "@angular/common";
export class XAxisTicksComponent {
constructor(platformId) {
this.platformId = platformId;
this.tickArguments = [5];
this.tickStroke = '#ccc';
this.trimTicks = true;
this.maxTickLength = 16;
this.showGridLines = false;
this.rotateTicks = true;
this.dimensionsChanged = new EventEmitter();
this.verticalSpacing = 20;
this.rotateLabels = false;
this.innerTickSize = 6;
this.outerTickSize = 6;
this.tickPadding = 3;
this.textAnchor = TextAnchor.Middle;
this.maxTicksLength = 0;
this.maxAllowedLength = 16;
this.height = 0;
this.approxHeight = 10;
}
ngOnChanges(changes) {
this.update();
}
ngAfterViewInit() {
setTimeout(() => this.updateDims());
}
updateDims() {
if (!isPlatformBrowser(this.platformId)) {
// for SSR, use approximate value instead of measured
this.dimensionsChanged.emit({ height: this.approxHeight });
return;
}
const height = parseInt(this.ticksElement.nativeElement.getBoundingClientRect().height, 10);
if (height !== this.height) {
this.height = height;
this.dimensionsChanged.emit({ height: this.height });
setTimeout(() => this.updateDims());
}
}
update() {
const scale = this.scale;
this.ticks = this.getTicks();
if (this.tickFormatting) {
this.tickFormat = this.tickFormatting;
}
else if (scale.tickFormat) {
this.tickFormat = scale.tickFormat.apply(scale, this.tickArguments);
}
else {
this.tickFormat = function (d) {
if (d.constructor.name === 'Date') {
return d.toLocaleDateString();
}
return d.toLocaleString();
};
}
const angle = this.rotateTicks ? this.getRotationAngle(this.ticks) : null;
this.adjustedScale = this.scale.bandwidth
? function (d) {
return this.scale(d) + this.scale.bandwidth() * 0.5;
}
: this.scale;
this.textTransform = '';
if (angle && angle !== 0) {
this.textTransform = `rotate(${angle})`;
this.textAnchor = TextAnchor.End;
this.verticalSpacing = 10;
}
else {
this.textAnchor = TextAnchor.Middle;
}
setTimeout(() => this.updateDims());
}
getRotationAngle(ticks) {
let angle = 0;
this.maxTicksLength = 0;
for (let i = 0; i < ticks.length; i++) {
const tick = this.tickFormat(ticks[i]).toString();
let tickLength = tick.length;
if (this.trimTicks) {
tickLength = this.tickTrim(tick).length;
}
if (tickLength > this.maxTicksLength) {
this.maxTicksLength = tickLength;
}
}
const len = Math.min(this.maxTicksLength, this.maxAllowedLength);
const charWidth = 7; // need to measure this
const wordWidth = len * charWidth;
let baseWidth = wordWidth;
const maxBaseWidth = Math.floor(this.width / ticks.length);
// calculate optimal angle
while (baseWidth > maxBaseWidth && angle > -90) {
angle -= 30;
baseWidth = Math.cos(angle * (Math.PI / 180)) * wordWidth;
}
this.approxHeight = Math.max(Math.abs(Math.sin(angle * (Math.PI / 180)) * wordWidth), 10);
return angle;
}
getTicks() {
let ticks;
const maxTicks = this.getMaxTicks(20);
const maxScaleTicks = this.getMaxTicks(100);
if (this.tickValues) {
ticks = this.tickValues;
}
else if (this.scale.ticks) {
ticks = this.scale.ticks.apply(this.scale, [maxScaleTicks]);
}
else {
ticks = this.scale.domain();
ticks = reduceTicks(ticks, maxTicks);
}
return ticks;
}
getMaxTicks(tickWidth) {
return Math.floor(this.width / tickWidth);
}
tickTransform(tick) {
return 'translate(' + this.adjustedScale(tick) + ',' + this.verticalSpacing + ')';
}
gridLineTransform() {
return `translate(0,${-this.verticalSpacing - 5})`;
}
tickTrim(label) {
return this.trimTicks ? trimLabel(label, this.maxTickLength) : label;
}
}
XAxisTicksComponent.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "13.1.0", ngImport: i0, type: XAxisTicksComponent, deps: [{ token: PLATFORM_ID }], target: i0.ɵɵFactoryTarget.Component });
XAxisTicksComponent.ɵcmp = i0.ɵɵngDeclareComponent({ minVersion: "12.0.0", version: "13.1.0", type: XAxisTicksComponent, selector: "g[ngx-charts-x-axis-ticks]", inputs: { scale: "scale", orient: "orient", tickArguments: "tickArguments", tickValues: "tickValues", tickStroke: "tickStroke", trimTicks: "trimTicks", maxTickLength: "maxTickLength", tickFormatting: "tickFormatting", showGridLines: "showGridLines", gridLineHeight: "gridLineHeight", width: "width", rotateTicks: "rotateTicks" }, outputs: { dimensionsChanged: "dimensionsChanged" }, viewQueries: [{ propertyName: "ticksElement", first: true, predicate: ["ticksel"], descendants: true }], usesOnChanges: true, ngImport: i0, template: `
<svg:g #ticksel>
<svg:g *ngFor="let tick of ticks" class="tick" [attr.transform]="tickTransform(tick)">
<title>{{ tickFormat(tick) }}</title>
<svg:text
stroke-width="0.01"
[attr.text-anchor]="textAnchor"
[attr.transform]="textTransform"
[style.font-size]="'12px'"
>
{{ tickTrim(tickFormat(tick)) }}
</svg:text>
</svg:g>
</svg:g>
<svg:g *ngFor="let tick of ticks" [attr.transform]="tickTransform(tick)">
<svg:g *ngIf="showGridLines" [attr.transform]="gridLineTransform()">
<svg:line class="gridline-path gridline-path-vertical" [attr.y1]="-gridLineHeight" y2="0" />
</svg:g>
</svg:g>
`, isInline: true, directives: [{ type: i1.NgForOf, selector: "[ngFor][ngForOf]", inputs: ["ngForOf", "ngForTrackBy", "ngForTemplate"] }, { type: i1.NgIf, selector: "[ngIf]", inputs: ["ngIf", "ngIfThen", "ngIfElse"] }], changeDetection: i0.ChangeDetectionStrategy.OnPush });
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "13.1.0", ngImport: i0, type: XAxisTicksComponent, decorators: [{
type: Component,
args: [{
selector: 'g[ngx-charts-x-axis-ticks]',
template: `
<svg:g #ticksel>
<svg:g *ngFor="let tick of ticks" class="tick" [attr.transform]="tickTransform(tick)">
<title>{{ tickFormat(tick) }}</title>
<svg:text
stroke-width="0.01"
[attr.text-anchor]="textAnchor"
[attr.transform]="textTransform"
[style.font-size]="'12px'"
>
{{ tickTrim(tickFormat(tick)) }}
</svg:text>
</svg:g>
</svg:g>
<svg:g *ngFor="let tick of ticks" [attr.transform]="tickTransform(tick)">
<svg:g *ngIf="showGridLines" [attr.transform]="gridLineTransform()">
<svg:line class="gridline-path gridline-path-vertical" [attr.y1]="-gridLineHeight" y2="0" />
</svg:g>
</svg:g>
`,
changeDetection: ChangeDetectionStrategy.OnPush
}]
}], ctorParameters: function () { return [{ type: undefined, decorators: [{
type: Inject,
args: [PLATFORM_ID]
}] }]; }, propDecorators: { scale: [{
type: Input
}], orient: [{
type: Input
}], tickArguments: [{
type: Input
}], tickValues: [{
type: Input
}], tickStroke: [{
type: Input
}], trimTicks: [{
type: Input
}], maxTickLength: [{
type: Input
}], tickFormatting: [{
type: Input
}], showGridLines: [{
type: Input
}], gridLineHeight: [{
type: Input
}], width: [{
type: Input
}], rotateTicks: [{
type: Input
}], dimensionsChanged: [{
type: Output
}], ticksElement: [{
type: ViewChild,
args: ['ticksel']
}] } });
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{ isPlatformBrowser } from '@angular/common';\nimport {\n  Component,\n  Input,\n  Output,\n  EventEmitter,\n  OnChanges,\n  ElementRef,\n  ViewChild,\n  SimpleChanges,\n  AfterViewInit,\n  ChangeDetectionStrategy,\n  Inject,\n  PLATFORM_ID\n} from '@angular/core';\nimport { trimLabel } from '../trim-label.helper';\nimport { reduceTicks } from './ticks.helper';\nimport { Orientation } from '../types/orientation.enum';\nimport { TextAnchor } from '../types/text-anchor.enum';\n\n@Component({\n  selector: 'g[ngx-charts-x-axis-ticks]',\n  template: `\n    <svg:g #ticksel>\n      <svg:g *ngFor=\"let tick of ticks\" class=\"tick\" [attr.transform]=\"tickTransform(tick)\">\n        <title>{{ tickFormat(tick) }}</title>\n        <svg:text\n          stroke-width=\"0.01\"\n          [attr.text-anchor]=\"textAnchor\"\n          [attr.transform]=\"textTransform\"\n          [style.font-size]=\"'12px'\"\n        >\n          {{ tickTrim(tickFormat(tick)) }}\n        </svg:text>\n      </svg:g>\n    </svg:g>\n\n    <svg:g *ngFor=\"let tick of ticks\" [attr.transform]=\"tickTransform(tick)\">\n      <svg:g *ngIf=\"showGridLines\" [attr.transform]=\"gridLineTransform()\">\n        <svg:line class=\"gridline-path gridline-path-vertical\" [attr.y1]=\"-gridLineHeight\" y2=\"0\" />\n      </svg:g>\n    </svg:g>\n  `,\n  changeDetection: ChangeDetectionStrategy.OnPush\n})\nexport class XAxisTicksComponent implements OnChanges, AfterViewInit {\n  @Input() scale;\n  @Input() orient: Orientation;\n  @Input() tickArguments: number[] = [5];\n  @Input() tickValues: string[] | number[];\n  @Input() tickStroke: string = '#ccc';\n  @Input() trimTicks: boolean = true;\n  @Input() maxTickLength: number = 16;\n  @Input() tickFormatting;\n  @Input() showGridLines = false;\n  @Input() gridLineHeight: number;\n  @Input() width: number;\n  @Input() rotateTicks: boolean = true;\n\n  @Output() dimensionsChanged = new EventEmitter();\n\n  verticalSpacing: number = 20;\n  rotateLabels: boolean = false;\n  innerTickSize: number = 6;\n  outerTickSize: number = 6;\n  tickPadding: number = 3;\n  textAnchor: TextAnchor = TextAnchor.Middle;\n  maxTicksLength: number = 0;\n  maxAllowedLength: number = 16;\n  adjustedScale: any;\n  textTransform: string;\n  ticks: any[];\n  tickFormat: (o: any) => any;\n  height: number = 0;\n  approxHeight: number = 10;\n\n  @ViewChild('ticksel') ticksElement: ElementRef;\n\n  constructor(@Inject(PLATFORM_ID) private platformId: any) {}\n\n  ngOnChanges(changes: SimpleChanges): void {\n    this.update();\n  }\n\n  ngAfterViewInit(): void {\n    setTimeout(() => this.updateDims());\n  }\n\n  updateDims(): void {\n    if (!isPlatformBrowser(this.platformId)) {\n      // for SSR, use approximate value instead of measured\n      this.dimensionsChanged.emit({ height: this.approxHeight });\n      return;\n    }\n\n    const height = parseInt(this.ticksElement.nativeElement.getBoundingClientRect().height, 10);\n    if (height !== this.height) {\n      this.height = height;\n      this.dimensionsChanged.emit({ height: this.height });\n      setTimeout(() => this.updateDims());\n    }\n  }\n\n  update(): void {\n    const scale = this.scale;\n    this.ticks = this.getTicks();\n\n    if (this.tickFormatting) {\n      this.tickFormat = this.tickFormatting;\n    } else if (scale.tickFormat) {\n      this.tickFormat = scale.tickFormat.apply(scale, this.tickArguments);\n    } else {\n      this.tickFormat = function (d) {\n        if (d.constructor.name === 'Date') {\n          return d.toLocaleDateString();\n        }\n        return d.toLocaleString();\n      };\n    }\n\n    const angle = this.rotateTicks ? this.getRotationAngle(this.ticks) : null;\n\n    this.adjustedScale = this.scale.bandwidth\n      ? function (d) {\n          return this.scale(d) + this.scale.bandwidth() * 0.5;\n        }\n      : this.scale;\n\n    this.textTransform = '';\n    if (angle && angle !== 0) {\n      this.textTransform = `rotate(${angle})`;\n      this.textAnchor = TextAnchor.End;\n      this.verticalSpacing = 10;\n    } else {\n      this.textAnchor = TextAnchor.Middle;\n    }\n\n    setTimeout(() => this.updateDims());\n  }\n\n  getRotationAngle(ticks: any[]): number {\n    let angle = 0;\n    this.maxTicksLength = 0;\n    for (let i = 0; i < ticks.length; i++) {\n      const tick = this.tickFormat(ticks[i]).toString();\n      let tickLength = tick.length;\n      if (this.trimTicks) {\n        tickLength = this.tickTrim(tick).length;\n      }\n\n      if (tickLength > this.maxTicksLength) {\n        this.maxTicksLength = tickLength;\n      }\n    }\n\n    const len = Math.min(this.maxTicksLength, this.maxAllowedLength);\n    const charWidth = 7; // need to measure this\n    const wordWidth = len * charWidth;\n\n    let baseWidth = wordWidth;\n    const maxBaseWidth = Math.floor(this.width / ticks.length);\n\n    // calculate optimal angle\n    while (baseWidth > maxBaseWidth && angle > -90) {\n      angle -= 30;\n      baseWidth = Math.cos(angle * (Math.PI / 180)) * wordWidth;\n    }\n\n    this.approxHeight = Math.max(Math.abs(Math.sin(angle * (Math.PI / 180)) * wordWidth), 10);\n\n    return angle;\n  }\n\n  getTicks(): any[] {\n    let ticks;\n    const maxTicks = this.getMaxTicks(20);\n    const maxScaleTicks = this.getMaxTicks(100);\n\n    if (this.tickValues) {\n      ticks = this.tickValues;\n    } else if (this.scale.ticks) {\n      ticks = this.scale.ticks.apply(this.scale, [maxScaleTicks]);\n    } else {\n      ticks = this.scale.domain();\n      ticks = reduceTicks(ticks, maxTicks);\n    }\n\n    return ticks;\n  }\n\n  getMaxTicks(tickWidth: number): number {\n    return Math.floor(this.width / tickWidth);\n  }\n\n  tickTransform(tick: number): string {\n    return 'translate(' + this.adjustedScale(tick) + ',' + this.verticalSpacing + ')';\n  }\n\n  gridLineTransform(): string {\n    return `translate(0,${-this.verticalSpacing - 5})`;\n  }\n\n  tickTrim(label: string): string {\n    return this.trimTicks ? trimLabel(label, this.maxTickLength) : label;\n  }\n}\n"]}