Task/update chart colors on theme change (#7981)

* Update chart colors on change of color scheme

* Update changelog

CHANGELOG.md

@@ -16,6 +16,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Changed
 
+- Improved the charts to update their colors if the appearance is set to auto and the operating system switches between light and dark mode
 - Extended the emergency fund dialog in the portfolio summary to include the currency suffix
 - Extended the user detail dialog in the users section of the admin control panel to include the last request
 - Migrated the client to the code generated by the new `prisma-client` generator of _Prisma_

apps/client/src/app/app.component.ts

@@ -1,4 +1,8 @@
-import { getCssVariable, isDarkColorScheme } from '@ghostfolio/common/helper';
+import {
+  getBackgroundColor,
+  getCssVariable,
+  isDarkColorScheme
+} from '@ghostfolio/common/helper';
 import {
   AssetProfileIdentifier,
   InfoItem,
@@ -227,7 +231,7 @@ export class GfAppComponent implements OnInit {
           : !!this.info?.subscriptionOffer?.coupon ||
             !!this.info?.subscriptionOffer?.durationExtension;
 
-        this.initializeTheme(this.user?.settings.colorScheme);
+        this.toggleTheme(this.user?.settings.colorScheme);
 
         this.changeDetectorRef.markForCheck();
       });
@@ -259,17 +263,19 @@ export class GfAppComponent implements OnInit {
     document.location.href = `/${document.documentElement.lang}`;
   }
 
-  private initializeTheme(userPreferredColorScheme?: ColorScheme) {
-    this.toggleTheme(isDarkColorScheme(userPreferredColorScheme));
+  private initializeTheme() {
+    this.toggleTheme();
 
     // Default chart styles
     Chart.defaults.font.family = getCssVariable('--font-family-sans-serif');
 
-    window.matchMedia('(prefers-color-scheme: dark)').addListener((event) => {
-      if (!this.user?.settings.colorScheme) {
-        this.toggleTheme(event.matches);
-      }
-    });
+    window
+      .matchMedia('(prefers-color-scheme: dark)')
+      .addEventListener('change', () => {
+        if (!this.user?.settings.colorScheme) {
+          this.toggleTheme();
+        }
+      });
   }
 
   private openHoldingDetailDialog({
@@ -340,12 +346,8 @@ export class GfAppComponent implements OnInit {
       });
   }
 
-  private toggleTheme(isDarkTheme: boolean) {
-    const themeColor = getCssVariable(
-      isDarkTheme ? '--dark-background' : '--light-background'
-    );
-
-    if (isDarkTheme) {
+  private toggleTheme(userPreferredColorScheme?: ColorScheme) {
+    if (isDarkColorScheme(userPreferredColorScheme)) {
       this.document.body.classList.add('theme-dark');
       this.document.body.classList.remove('theme-light');
     } else {
@@ -355,6 +357,6 @@ export class GfAppComponent implements OnInit {
 
     this.document
       .querySelector('meta[name="theme-color"]')
-      ?.setAttribute('content', themeColor);
+      ?.setAttribute('content', getBackgroundColor(userPreferredColorScheme));
   }
 }

apps/client/src/app/components/benchmark-comparator/benchmark-comparator.component.ts

@@ -15,6 +15,7 @@ import { ColorScheme } from '@ghostfolio/common/types';
 import type { SymbolProfile } from '@ghostfolio/prisma/browser';
 import {
   getTimeSeriesTooltipOptions,
+  onPrefersColorSchemeChange,
   registerChartConfiguration
 } from '@ghostfolio/ui/chart';
 import { GfPremiumIndicatorComponent } from '@ghostfolio/ui/premium-indicator';
@@ -27,6 +28,7 @@ import {
   OnChanges,
   OnDestroy,
   output,
+  SimpleChanges,
   viewChild
 } from '@angular/core';
 import { FormsModule, ReactiveFormsModule } from '@angular/forms';
@@ -68,7 +70,7 @@ export class GfBenchmarkComparatorComponent implements OnChanges, OnDestroy {
   public readonly benchmark = input<Partial<SymbolProfile>>();
   public readonly benchmarkDataItems = input<LineChartItem[]>([]);
   public readonly benchmarks = input<Partial<SymbolProfile>[]>();
-  public readonly colorScheme = input.required<ColorScheme>();
+  public readonly colorScheme = input<ColorScheme>();
   public readonly isLoading = input<boolean>();
   public readonly locale = input(getLocale());
   public readonly performanceDataItems = input.required<LineChartItem[]>();
@@ -76,7 +78,7 @@ export class GfBenchmarkComparatorComponent implements OnChanges, OnDestroy {
 
   public readonly benchmarkChanged = output<string>();
 
-  protected chart: Chart<'line'>;
+  protected chart?: Chart<'line'>;
   protected hasPermissionToAccessAdminControl: boolean;
   protected readonly routerLinkAdminControlMarketData =
     internalRoutes.adminControl.subRoutes.marketData.routerLink;
@@ -96,10 +98,24 @@ export class GfBenchmarkComparatorComponent implements OnChanges, OnDestroy {
 
     registerChartConfiguration();
 
+    onPrefersColorSchemeChange(() => {
+      if (this.chart && !this.colorScheme()) {
+        this.chart.destroy();
+        this.chart = undefined;
+
+        this.initialize();
+      }
+    });
+
     addIcons({ arrowForwardOutline });
   }
 
-  public ngOnChanges() {
+  public ngOnChanges(changes: SimpleChanges) {
+    if (changes.colorScheme && this.chart) {
+      this.chart.destroy();
+      this.chart = undefined;
+    }
+
     this.hasPermissionToAccessAdminControl = hasPermission(
       this.user()?.permissions,
       permissions.accessAdminControl

apps/client/src/app/components/holding-detail-dialog/interfaces/interfaces.ts

@@ -3,7 +3,7 @@ import { DataSource } from '@ghostfolio/prisma/enums';
 
 export interface HoldingDetailDialogParams {
   baseCurrency: string;
-  colorScheme: ColorScheme;
+  colorScheme?: ColorScheme;
   dataSource: DataSource;
   deviceType: string;
   hasPermissionToAccessAdminControl: boolean;

apps/client/src/app/components/investment-chart/investment-chart.component.ts

@@ -14,6 +14,7 @@ import { InvestmentItem } from '@ghostfolio/common/interfaces/investment-item.in
 import { ColorScheme, GroupBy } from '@ghostfolio/common/types';
 import {
   getTimeSeriesTooltipOptions,
+  onPrefersColorSchemeChange,
   registerChartConfiguration
 } from '@ghostfolio/ui/chart';
 
@@ -24,6 +25,7 @@ import {
   Input,
   OnChanges,
   OnDestroy,
+  SimpleChanges,
   viewChild
 } from '@angular/core';
 import {
@@ -67,7 +69,7 @@ export class GfInvestmentChartComponent implements OnChanges, OnDestroy {
   private readonly chartCanvas =
     viewChild.required<ElementRef<HTMLCanvasElement>>('chartCanvas');
 
-  private chart: Chart<'bar' | 'line'>;
+  private chart?: Chart<'bar' | 'line'>;
   private investments: InvestmentItem[];
   private values: LineChartItem[];
 
@@ -84,9 +86,23 @@ export class GfInvestmentChartComponent implements OnChanges, OnDestroy {
     );
 
     registerChartConfiguration();
+
+    onPrefersColorSchemeChange(() => {
+      if (this.chart && !this.colorScheme) {
+        this.chart.destroy();
+        this.chart = undefined;
+
+        this.initialize();
+      }
+    });
   }
 
-  public ngOnChanges() {
+  public ngOnChanges(changes: SimpleChanges) {
+    if (changes.colorScheme && this.chart) {
+      this.chart.destroy();
+      this.chart = undefined;
+    }
+
     if (this.benchmarkDataItems && this.historicalDataItems) {
       this.initialize();
     }

libs/common/src/lib/chart-helper.ts

@@ -101,9 +101,11 @@ export function getTooltipOptions<T extends ChartType>({
   locale?: string;
   unit?: string;
 }): Partial<TooltipOptions<T>> {
+  const textColor = getTextColor(colorScheme);
+
   return {
     backgroundColor: getBackgroundColor(colorScheme),
-    bodyColor: `rgb(${getTextColor(colorScheme)})`,
+    bodyColor: `rgb(${textColor})`,
     borderWidth: 1,
     borderColor: getChartBorderColor(colorScheme),
     // @ts-expect-error: no need to set all attributes in callbacks
@@ -144,12 +146,12 @@ export function getTooltipOptions<T extends ChartType>({
     },
     caretSize: 0,
     cornerRadius: 2,
-    footerColor: `rgb(${getTextColor(colorScheme)})`,
+    footerColor: `rgb(${textColor})`,
     itemSort: (a, b) => {
       // Reverse order
       return b.datasetIndex - a.datasetIndex;
     },
-    titleColor: `rgb(${getTextColor(colorScheme)})`,
+    titleColor: `rgb(${textColor})`,
     usePointStyle: true
   };
 }
@@ -183,6 +185,8 @@ export function getValueAxisOptions({
     ticks: Tick[]
   ) => string;
 }): ScaleOptions<'linear'> {
+  const borderColor = getChartBorderColor(colorScheme);
+
   return {
     display,
     border: {
@@ -196,7 +200,7 @@ export function getValueAxisOptions({
           tick.value === scale.min ||
           highlightedValues.includes(tick.value)
         ) {
-          return getChartBorderColor(colorScheme);
+          return borderColor;
         }
 
         return 'transparent';

libs/ui/src/lib/chart/chart.color-scheme.ts

@@ -0,0 +1,8 @@
+import { takeUntilDestroyed } from '@angular/core/rxjs-interop';
+import { fromEvent } from 'rxjs';
+
+export function onPrefersColorSchemeChange(callback: () => void) {
+  fromEvent(window.matchMedia('(prefers-color-scheme: dark)'), 'change')
+    .pipe(takeUntilDestroyed())
+    .subscribe(callback);
+}

libs/ui/src/lib/chart/index.ts

@@ -1,2 +1,3 @@
+export * from './chart.color-scheme';
 export * from './chart.options';
 export * from './chart.registry';

libs/ui/src/lib/fire-calculator/fire-calculator.component.ts

@@ -18,6 +18,7 @@ import {
   OnChanges,
   OnDestroy,
   output,
+  SimpleChanges,
   viewChild
 } from '@angular/core';
 import { takeUntilDestroyed } from '@angular/core/rxjs-interop';
@@ -63,6 +64,7 @@ import { isNumber } from 'lodash-es';
 import { NgxSkeletonLoaderModule } from 'ngx-skeleton-loader';
 import { debounceTime } from 'rxjs';
 
+import { onPrefersColorSchemeChange } from '../chart';
 import { FireCalculatorService } from './fire-calculator.service';
 
 @Component({
@@ -85,7 +87,7 @@ import { FireCalculatorService } from './fire-calculator.service';
 })
 export class GfFireCalculatorComponent implements OnChanges, OnDestroy {
   @Input() annualInterestRate = 0;
-  @Input() colorScheme: ColorScheme;
+  @Input() colorScheme?: ColorScheme;
   @Input() currency: string;
   @Input() deviceType: string;
   @Input() fireWealth = 0;
@@ -103,7 +105,7 @@ export class GfFireCalculatorComponent implements OnChanges, OnDestroy {
     retirementDate: new FormControl<Date | null>(null)
   });
 
-  public chart: Chart<'bar'>;
+  public chart?: Chart<'bar'>;
   public isLoading = true;
   public minDate = addDays(new Date(), 1);
   public periodsToRetire = 0;
@@ -142,6 +144,15 @@ export class GfFireCalculatorComponent implements OnChanges, OnDestroy {
 
     addIcons({ calendarClearOutline });
 
+    onPrefersColorSchemeChange(() => {
+      if (this.chart && !this.colorScheme) {
+        this.chart.destroy();
+        this.chart = undefined;
+
+        this.initialize();
+      }
+    });
+
     this.calculatorForm.valueChanges
       .pipe(takeUntilDestroyed(this.destroyRef))
       .subscribe(() => {
@@ -221,7 +232,14 @@ export class GfFireCalculatorComponent implements OnChanges, OnDestroy {
     });
   }
 
-  public ngOnChanges() {
+  public ngOnChanges(changes: SimpleChanges) {
+    if (changes.colorScheme && this.chart) {
+      this.chart.destroy();
+      this.chart = undefined;
+
+      this.initialize();
+    }
+
     if (isNumber(this.fireWealth) && this.fireWealth >= 0) {
       this.calculatorForm.setValue(
         {

libs/ui/src/lib/line-chart/line-chart.component.ts

@@ -18,6 +18,7 @@ import {
   Input,
   OnChanges,
   OnDestroy,
+  SimpleChanges,
   ViewChild
 } from '@angular/core';
 import {
@@ -37,6 +38,7 @@ import { NgxSkeletonLoaderModule } from 'ngx-skeleton-loader';
 
 import {
   getTimeSeriesTooltipOptions,
+  onPrefersColorSchemeChange,
   registerChartConfiguration
 } from '../chart';
 
@@ -71,7 +73,7 @@ export class GfLineChartComponent
 
   @ViewChild('chartCanvas') chartCanvas: ElementRef<HTMLCanvasElement>;
 
-  public chart: Chart<'line'>;
+  public chart?: Chart<'line'>;
   public isLoading = true;
 
   private readonly ANIMATION_DURATION = 1200;
@@ -88,6 +90,15 @@ export class GfLineChartComponent
     );
 
     registerChartConfiguration();
+
+    onPrefersColorSchemeChange(() => {
+      if (this.chart && !this.colorScheme) {
+        this.chart.destroy();
+        this.chart = undefined;
+
+        this.initialize();
+      }
+    });
   }
 
   public ngAfterViewInit() {
@@ -101,7 +112,12 @@ export class GfLineChartComponent
     }
   }
 
-  public ngOnChanges() {
+  public ngOnChanges(changes: SimpleChanges) {
+    if (changes.colorScheme && this.chart) {
+      this.chart.destroy();
+      this.chart = undefined;
+    }
+
     if (this.historicalDataItems || this.historicalDataItems === null) {
       setTimeout(() => {
         // Wait for the chartCanvas

libs/ui/src/lib/portfolio-proportion-chart/portfolio-proportion-chart.component.ts

@@ -33,6 +33,7 @@ import Color from 'color';
 import { NgxSkeletonLoaderModule } from 'ngx-skeleton-loader';
 import OpenColor from 'open-color';
 
+import { onPrefersColorSchemeChange } from '../chart';
 import { PortfolioProportionChartClickEvent } from './interfaces/interfaces';
 
 const {
@@ -94,6 +95,12 @@ export class GfPortfolioProportionChartComponent
 
   public constructor() {
     Chart.register(ArcElement, DoughnutController, LinearScale, Tooltip);
+
+    onPrefersColorSchemeChange(() => {
+      if (this.chart && !this.colorScheme) {
+        this.initialize();
+      }
+    });
   }
 
   public ngAfterViewInit() {

libs/ui/src/lib/treemap-chart/treemap-chart.component.ts

@@ -36,6 +36,7 @@ import { orderBy, round } from 'lodash-es';
 import { NgxSkeletonLoaderModule } from 'ngx-skeleton-loader';
 import OpenColor from 'open-color';
 
+import { onPrefersColorSchemeChange } from '../chart';
 import type {
   GetColorParams,
   GfTreemapDataPoint,
@@ -55,7 +56,7 @@ export class GfTreemapChartComponent
   implements AfterViewInit, OnChanges, OnDestroy
 {
   public readonly baseCurrency = input.required<string>();
-  public readonly colorScheme = input.required<ColorScheme>();
+  public readonly colorScheme = input<ColorScheme>();
   public readonly cursor = input.required<string>();
   public readonly dateRange = input.required<DateRange>();
   public readonly holdings = input<PortfolioPosition[]>();
@@ -71,6 +72,12 @@ export class GfTreemapChartComponent
 
   public constructor() {
     Chart.register(LinearScale, Tooltip, TreemapController, TreemapElement);
+
+    onPrefersColorSchemeChange(() => {
+      if (this.chart && !this.colorScheme()) {
+        this.initialize();
+      }
+    });
   }
 
   public ngAfterViewInit() {