Bugfix/light color scheme in chart helpers (#7975)

* Fix colors of charts if appearance is set to light and OS uses dark mode

* Update changelog

CHANGELOG.md

@@ -20,6 +20,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Fixed
 
 - Fixed the colors of the investment chart component (dark mode)
+- Fixed the colors of the charts if the appearance is set to light and the operating system uses dark mode
 - Fixed the allocation column of the top holdings of ETFs on the allocations page after a change of the user settings
 - Fixed the value column of the top holdings of ETFs on the allocations page in the _Presenter View_
 - Fixed the projected sustainable retirement income on the _FIRE_ page for a projected total amount of zero (experimental)

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

@@ -1,4 +1,4 @@
-import { getCssVariable } from '@ghostfolio/common/helper';
+import { getCssVariable, isDarkColorScheme } from '@ghostfolio/common/helper';
 import {
   AssetProfileIdentifier,
   InfoItem,
@@ -260,11 +260,7 @@ export class GfAppComponent implements OnInit {
   }
 
   private initializeTheme(userPreferredColorScheme?: ColorScheme) {
-    const isDarkTheme = userPreferredColorScheme
-      ? userPreferredColorScheme === 'DARK'
-      : window.matchMedia('(prefers-color-scheme: dark)').matches;
-
-    this.toggleTheme(isDarkTheme);
+    this.toggleTheme(isDarkColorScheme(userPreferredColorScheme));
 
     // Default chart styles
     Chart.defaults.font.family = getCssVariable('--font-family-sans-serif');

apps/client/src/app/components/admin-market-data/asset-profile-dialog-host/asset-profile-dialog-host.component.ts

@@ -1,8 +1,5 @@
 import { UserService } from '@ghostfolio/client/services/user/user.service';
-import {
-  DEFAULT_COLOR_SCHEME,
-  DEFAULT_LOCALE
-} from '@ghostfolio/common/config';
+import { DEFAULT_LOCALE } from '@ghostfolio/common/config';
 import { AssetProfileIdentifier, User } from '@ghostfolio/common/interfaces';
 import { internalRoutes } from '@ghostfolio/common/routes/routes';
 import { DataSource } from '@ghostfolio/prisma/enums';
@@ -150,7 +147,7 @@ export class GfAssetProfileDialogHostComponent implements OnDestroy, OnInit {
       data: {
         dataSource,
         symbol,
-        colorScheme: user?.settings.colorScheme ?? DEFAULT_COLOR_SCHEME,
+        colorScheme: user?.settings?.colorScheme,
         deviceType: this.deviceType(),
         locale: user?.settings?.locale ?? DEFAULT_LOCALE
       } satisfies AssetProfileDialogParams,

apps/client/src/app/components/admin-market-data/asset-profile-dialog/interfaces/interfaces.ts

@@ -2,7 +2,7 @@ import { ColorScheme } from '@ghostfolio/common/types';
 import { DataSource } from '@ghostfolio/prisma/enums';
 
 export interface AssetProfileDialogParams {
-  colorScheme: ColorScheme;
+  colorScheme?: ColorScheme;
   dataSource: DataSource;
   deviceType: string;
   locale: string;

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

@@ -7,11 +7,7 @@ import {
   getZeroLineAnnotation,
   transformTickToAbbreviation
 } from '@ghostfolio/common/chart-helper';
-import {
-  DEFAULT_COLOR_SCHEME,
-  primaryColorRgb,
-  secondaryColorRgb
-} from '@ghostfolio/common/config';
+import { primaryColorRgb, secondaryColorRgb } from '@ghostfolio/common/config';
 import { getLocale, parseDate } from '@ghostfolio/common/helper';
 import { LineChartItem } from '@ghostfolio/common/interfaces';
 import { InvestmentItem } from '@ghostfolio/common/interfaces/investment-item.interface';
@@ -174,15 +170,13 @@ export class GfInvestmentChartComponent implements OnChanges, OnDestroy {
 
         this.chart.update();
       } else {
-        const colorScheme = this.colorScheme ?? DEFAULT_COLOR_SCHEME;
-
         this.chart = new Chart<'bar' | 'line'>(
           this.chartCanvas().nativeElement,
           {
             data: chartData,
             options: {
               animation: false,
-              elements: getChartElementsOptions(colorScheme),
+              elements: getChartElementsOptions(this.colorScheme),
               interaction: { intersect: false, mode: 'index' },
               maintainAspectRatio: true,
               plugins: {
@@ -210,7 +204,7 @@ export class GfInvestmentChartComponent implements OnChanges, OnDestroy {
                           value: this.savingsRate
                         }
                       : undefined,
-                    yAxis: getZeroLineAnnotation(colorScheme)
+                    yAxis: getZeroLineAnnotation(this.colorScheme)
                   }
                 },
                 legend: {
@@ -218,18 +212,18 @@ export class GfInvestmentChartComponent implements OnChanges, OnDestroy {
                 },
                 tooltip: this.getTooltipPluginConfiguration(),
                 verticalHoverLine: {
-                  color: getChartBorderColor(colorScheme)
+                  color: getChartBorderColor(this.colorScheme)
                 }
               },
               responsive: true,
               scales: {
                 x: getTimeAxisOptions({
-                  colorScheme,
                   borderWidth: this.groupBy ? 0 : 1,
+                  colorScheme: this.colorScheme,
                   locale: this.locale
                 }),
                 y: getValueAxisOptions({
-                  colorScheme,
+                  colorScheme: this.colorScheme,
                   display: !this.isInPercentage,
                   tickCallback: (tickValue) => {
                     return transformTickToAbbreviation(Number(tickValue));
@@ -238,7 +232,7 @@ export class GfInvestmentChartComponent implements OnChanges, OnDestroy {
               }
             },
             plugins: [
-              getVerticalHoverLinePlugin(this.chartCanvas(), colorScheme)
+              getVerticalHoverLinePlugin(this.chartCanvas(), this.colorScheme)
             ],
             type: this.groupBy ? 'bar' : 'line'
           }
@@ -251,7 +245,7 @@ export class GfInvestmentChartComponent implements OnChanges, OnDestroy {
     TooltipOptions<'bar' | 'line'>
   > {
     return getTimeSeriesTooltipOptions<'bar' | 'line'>({
-      colorScheme: this.colorScheme ?? DEFAULT_COLOR_SCHEME,
+      colorScheme: this.colorScheme,
       currency: this.isInPercentage ? undefined : this.currency,
       groupBy: this.groupBy,
       locale: this.isInPercentage ? undefined : this.locale,

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

@@ -41,12 +41,12 @@ export function formatGroupedDate({
   return format(date, DATE_FORMAT);
 }
 
-export function getChartBorderColor(colorScheme: ColorScheme) {
+export function getChartBorderColor(colorScheme?: ColorScheme) {
   return `rgba(${getTextColor(colorScheme)}, 0.1)`;
 }
 
 export function getChartElementsOptions(
-  colorScheme: ColorScheme
+  colorScheme?: ColorScheme
 ): ChartOptions<'bar' | 'line'>['elements'] {
   return {
     line: {
@@ -67,7 +67,7 @@ export function getTimeAxisOptions({
   locale = getLocale()
 }: {
   borderWidth?: number;
-  colorScheme: ColorScheme;
+  colorScheme?: ColorScheme;
   display?: boolean;
   locale?: string;
 }): ScaleOptions<'time'> {
@@ -95,7 +95,7 @@ export function getTooltipOptions<T extends ChartType>({
   locale = getLocale(),
   unit = ''
 }: {
-  colorScheme: ColorScheme;
+  colorScheme?: ColorScheme;
   currency?: string;
   groupBy?: GroupBy;
   locale?: string;
@@ -174,7 +174,7 @@ export function getValueAxisOptions({
   highlightedValues = [],
   tickCallback
 }: {
-  colorScheme: ColorScheme;
+  colorScheme?: ColorScheme;
   display?: boolean;
   highlightedValues?: number[];
   tickCallback: (
@@ -214,7 +214,7 @@ export function getValueAxisOptions({
 
 export function getVerticalHoverLinePlugin<T extends 'line' | 'bar'>(
   chartCanvas: ElementRef<HTMLCanvasElement>,
-  colorScheme: ColorScheme
+  colorScheme?: ColorScheme
 ): Plugin<T, { color: string; width: number }> {
   return {
     afterDatasetsDraw: (chart, _, options) => {
@@ -249,7 +249,7 @@ export function getVerticalHoverLinePlugin<T extends 'line' | 'bar'>(
 }
 
 export function getZeroLineAnnotation(
-  colorScheme: ColorScheme
+  colorScheme?: ColorScheme
 ): AnnotationOptions<'line'> {
   return {
     borderColor: getChartBorderColor(colorScheme),

libs/common/src/lib/config.ts

@@ -8,7 +8,7 @@ import {
 import { JobOptions, JobStatus } from 'bull';
 import ms from 'ms';
 
-import { ColorScheme, DateRange } from './types';
+import { DateRange } from './types';
 
 export const ghostfolioPrefix = 'GF';
 
@@ -100,7 +100,6 @@ export const PORTFOLIO_SNAPSHOT_COMPUTATION_QUEUE_PRIORITY_LOW =
 
 export const STATISTICS_GATHERING_QUEUE = 'STATISTICS_GATHERING_QUEUE';
 
-export const DEFAULT_COLOR_SCHEME: ColorScheme = 'LIGHT';
 export const DEFAULT_CURRENCY = 'USD';
 export const DEFAULT_DATE_FORMAT_MONTH_YEAR = 'MMM yyyy';
 export const DEFAULT_DATE_RANGE: DateRange = 'max';

libs/common/src/lib/helper.spec.ts

@@ -13,6 +13,7 @@ import {
   isAccountExcluded,
   isCurrency,
   isCurrencySymbol,
+  isDarkColorScheme,
   isSplitRatio,
   isValidCurrencyCode,
   isValidCustomAssetProfileSymbol,
@@ -348,6 +349,40 @@ describe('Helper', () => {
     });
   });
 
+  describe('Is dark color scheme', () => {
+    const mockPrefersColorSchemeDark = (matches: boolean) => {
+      window.matchMedia = jest.fn(() => {
+        return { matches } as MediaQueryList;
+      });
+    };
+
+    afterEach(() => {
+      Reflect.deleteProperty(window, 'matchMedia');
+    });
+
+    it('Dark color scheme with operating system in light mode', () => {
+      mockPrefersColorSchemeDark(false);
+      expect(isDarkColorScheme('DARK')).toEqual(true);
+    });
+
+    it('Light color scheme with operating system in dark mode', () => {
+      mockPrefersColorSchemeDark(true);
+      expect(isDarkColorScheme('LIGHT')).toEqual(false);
+    });
+
+    it('Auto color scheme with operating system in dark mode', () => {
+      mockPrefersColorSchemeDark(true);
+      expect(isDarkColorScheme()).toEqual(true);
+      expect(isDarkColorScheme(null)).toEqual(true);
+    });
+
+    it('Auto color scheme with operating system in light mode', () => {
+      mockPrefersColorSchemeDark(false);
+      expect(isDarkColorScheme()).toEqual(false);
+      expect(isDarkColorScheme(null)).toEqual(false);
+    });
+  });
+
   describe('Is split ratio', () => {
     it('Forward split', () => {
       expect(isSplitRatio({ denominator: 1, numerator: 2 })).toEqual(true);

libs/common/src/lib/helper.ts

@@ -345,12 +345,9 @@ export function getAssetProfileIdentifier({
   return `${dataSource}-${symbol}`;
 }
 
-export function getBackgroundColor(aColorScheme: ColorScheme) {
+export function getBackgroundColor(aColorScheme?: ColorScheme) {
   return getCssVariable(
-    aColorScheme === 'DARK' ||
-      window.matchMedia('(prefers-color-scheme: dark)').matches
-      ? '--dark-background'
-      : '--light-background'
+    isDarkColorScheme(aColorScheme) ? '--dark-background' : '--light-background'
   );
 }
 
@@ -531,10 +528,9 @@ export function getSum(aArray: Big[]) {
   return new Big(0);
 }
 
-export function getTextColor(aColorScheme: ColorScheme) {
+export function getTextColor(aColorScheme?: ColorScheme) {
   const cssVariable = getCssVariable(
-    aColorScheme === 'DARK' ||
-      window.matchMedia('(prefers-color-scheme: dark)').matches
+    isDarkColorScheme(aColorScheme)
       ? '--light-primary-text'
       : '--dark-primary-text'
   );
@@ -612,6 +608,14 @@ export function isCurrencySymbol(aSymbol: string) {
   );
 }
 
+export function isDarkColorScheme(aColorScheme?: ColorScheme | null) {
+  if (aColorScheme) {
+    return aColorScheme === 'DARK';
+  }
+
+  return window.matchMedia('(prefers-color-scheme: dark)').matches;
+}
+
 export function isDerivedCurrency(aCurrency: string) {
   if (aCurrency === 'USX') {
     return true;

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

@@ -12,7 +12,7 @@ export function getTimeSeriesTooltipOptions<T extends 'bar' | 'line'>({
   locale,
   unit
 }: {
-  colorScheme: ColorScheme;
+  colorScheme?: ColorScheme;
   currency?: string;
   groupBy?: GroupBy;
   locale?: string;

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

@@ -4,11 +4,7 @@ import {
   getValueAxisOptions,
   getVerticalHoverLinePlugin
 } from '@ghostfolio/common/chart-helper';
-import {
-  DEFAULT_COLOR_SCHEME,
-  primaryColorRgb,
-  secondaryColorRgb
-} from '@ghostfolio/common/config';
+import { primaryColorRgb, secondaryColorRgb } from '@ghostfolio/common/config';
 import { getBackgroundColor, getLocale } from '@ghostfolio/common/helper';
 import { LineChartItem } from '@ghostfolio/common/interfaces';
 import { ColorScheme } from '@ghostfolio/common/types';
@@ -56,7 +52,7 @@ export class GfLineChartComponent
 {
   @Input() benchmarkDataItems: LineChartItem[] = [];
   @Input() benchmarkLabel = '';
-  @Input() colorScheme: ColorScheme = DEFAULT_COLOR_SCHEME;
+  @Input() colorScheme?: ColorScheme;
   @Input() currency: string;
   @Input() historicalDataItems: LineChartItem[];
   @Input() isAnimated = false;

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

@@ -1,5 +1,5 @@
 import { getTooltipOptions } from '@ghostfolio/common/chart-helper';
-import { DEFAULT_COLOR_SCHEME, UNKNOWN_KEY } from '@ghostfolio/common/config';
+import { UNKNOWN_KEY } from '@ghostfolio/common/config';
 import { getLocale, getSum, getTextColor } from '@ghostfolio/common/helper';
 import { PortfolioPosition } from '@ghostfolio/common/interfaces';
 import { ColorScheme } from '@ghostfolio/common/types';
@@ -124,7 +124,7 @@ export class GfPortfolioProportionChartComponent
       };
     } = {};
 
-    const textColor = getTextColor(this.colorScheme ?? DEFAULT_COLOR_SCHEME);
+    const textColor = getTextColor(this.colorScheme);
 
     this.colorMap = {
       [this.OTHER_KEY]: `rgba(${textColor}, 0.24)`,
@@ -448,7 +448,7 @@ export class GfPortfolioProportionChartComponent
   ): Partial<TooltipOptions<'doughnut'>> {
     return {
       ...getTooltipOptions({
-        colorScheme: this.colorScheme ?? DEFAULT_COLOR_SCHEME,
+        colorScheme: this.colorScheme,
         currency: this.baseCurrency,
         locale: this.locale
       }),

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

@@ -1,5 +1,3 @@
-import { DEFAULT_COLOR_SCHEME } from '@ghostfolio/common/config';
-
 import { CommonModule } from '@angular/common';
 import { moduleMetadata } from '@storybook/angular';
 import type { Meta, StoryObj } from '@storybook/angular';
@@ -38,7 +36,7 @@ export const Default: Story = {
   args: {
     holdings,
     baseCurrency: 'USD',
-    colorScheme: DEFAULT_COLOR_SCHEME,
+    colorScheme: 'LIGHT',
     cursor: undefined,
     dateRange: 'mtd',
     locale: 'en-US'