Add appearance page, add font size adjust

src/App.tsx

@@ -27,6 +27,7 @@ import { AppContextProvider } from "./features/auth/AppContext";
 import Router from "./Router";
 import BeforeInstallPromptProvider from "./BeforeInstallPromptProvider";
 import { UpdateContextProvider } from "./pages/settings/update/UpdateContext";
+import GlobalStyles from "./GlobalStyles";
 
 setupIonicReact({
   rippleEffect: false,
@@ -39,6 +40,7 @@ export default function App() {
   return (
     <AppContextProvider>
       <Provider store={store}>
+        <GlobalStyles />
         <BeforeInstallPromptProvider>
           <UpdateContextProvider>
             <Router>

src/GlobalStyles.tsx

@@ -0,0 +1,30 @@
+import { Global, css } from "@emotion/react";
+import { useAppSelector } from "./store";
+
+export default function GlobalStyles() {
+  const { fontSizeMultiplier, useSystemFontSize } = useAppSelector(
+    (state) => state.appearance.font
+  );
+
+  const baseFontStyles = useSystemFontSize
+    ? css`
+        font: -apple-system-body;
+      `
+    : css`
+        font-size: ${fontSizeMultiplier}rem;
+      `;
+
+  return (
+    <Global
+      styles={css`
+        html {
+          ${baseFontStyles}
+
+          ion-content ion-item {
+            font-size: 1rem;
+          }
+        }
+      `}
+    />
+  );
+}

src/TabbedRoutes.tsx

@@ -49,6 +49,7 @@ import UpdateAppPage from "./pages/settings/UpdateAppPage";
 import useShouldInstall from "./features/pwa/useShouldInstall";
 import { UpdateContext } from "./pages/settings/update/UpdateContext";
 import { LEMMY_SERVERS } from "./helpers/lemmy";
+import AppearancePage from "./pages/settings/AppearancePage";
 
 const Interceptor = styled.div`
   position: absolute;
@@ -314,6 +315,9 @@ export default function TabbedRoutes() {
           <Route exact path="/settings/update">
             <UpdateAppPage />
           </Route>
+          <Route exact path="/settings/appearance">
+            <AppearancePage />
+          </Route>
         </IonRouterOutlet>
         <IonTabBar slot="bottom">
           <IonTabButton

src/features/post/detail/PostDetail.tsx

@@ -55,7 +55,7 @@ export const CenteredSpinner = styled(IonSpinner)`
 `;
 
 const Container = styled.div`
-  margin: 0 0 1rem;
+  margin: 0 0 16px;
   width: 100%;
 `;
 
@@ -71,7 +71,7 @@ const LightboxImg = styled(Img)`
 `;
 
 const StyledMarkdown = styled(Markdown)`
-  margin: 1rem 0;
+  margin: 16px 0;
 
   img {
     display: block;
@@ -83,11 +83,11 @@ const StyledMarkdown = styled(Markdown)`
 `;
 
 const StyledEmbed = styled(Embed)`
-  margin: 1rem 0;
+  margin: 16px 0;
 `;
 
 const PostDeets = styled.div`
-  margin: 0 1rem;
+  margin: 0 16px;
   font-size: 0.9em;
 
   h1,
@@ -102,12 +102,12 @@ const PostDeets = styled.div`
 
 const Title = styled.div`
   font-size: 1.3em;
-  padding: 1rem 0 0;
-  margin-bottom: 1rem;
+  padding: 16px 0 0;
+  margin-bottom: 16px;
 `;
 
 const By = styled.div`
-  margin-bottom: 0.3rem;
+  margin-bottom: 5px;
   color: var(--ion-color-medium);
 
   white-space: nowrap;
@@ -117,7 +117,7 @@ const By = styled.div`
 
 export const AnnouncementIcon = styled(IonIcon)`
   font-size: 1.1rem;
-  margin-right: 0.3rem;
+  margin-right: 5px;
   vertical-align: middle;
   color: var(--ion-color-success);
 `;

src/features/post/inFeed/Post.tsx

@@ -52,6 +52,8 @@ const LeftDetails = styled.div`
   display: flex;
   flex-direction: column;
   gap: 0.5rem;
+
+  min-width: 0;
 `;
 
 const RightDetails = styled.div`

src/features/settings/appearance/TextSize.tsx

@@ -0,0 +1,85 @@
+import styled from "@emotion/styled";
+import { css } from "@emotion/react";
+import { IonLabel, IonList, IonRange, IonToggle } from "@ionic/react";
+import { InsetIonItem } from "../../../pages/profile/ProfileFeedItemsPage";
+import { useAppDispatch, useAppSelector } from "../../../store";
+import { setFontSizeMultiplier, setUseSystemFontSize } from "./appearanceSlice";
+
+const ListHeader = styled.div`
+  font-size: 0.8em;
+  margin: 32px 0 -8px 32px;
+  text-transform: uppercase;
+  color: var(--ion-color-medium);
+`;
+
+const Range = styled(IonRange)`
+  --bar-background: var(--ion-color-medium);
+
+  ::part(tick) {
+    background: var(--ion-color-medium);
+  }
+`;
+
+const A = styled.div<{ small?: boolean }>`
+  font-size: 1.3em;
+  padding: 0 0.5rem;
+  font-weight: 500;
+
+  ${({ small }) =>
+    small &&
+    css`
+      font-size: 0.8em;
+    `}
+`;
+
+const HelperText = styled.div`
+  margin: 0 32px;
+  font-size: 0.9em;
+  color: var(--ion-color-medium);
+`;
+
+export default function TextSize() {
+  const dispatch = useAppDispatch();
+  const { fontSizeMultiplier, useSystemFontSize } = useAppSelector(
+    (state) => state.appearance.font
+  );
+
+  return (
+    <>
+      <ListHeader>
+        <IonLabel>Text size</IonLabel>
+      </ListHeader>
+      <IonList inset>
+        <InsetIonItem>
+          <IonLabel>Use System Text Size</IonLabel>
+          <IonToggle
+            checked={useSystemFontSize}
+            onIonChange={(e) =>
+              dispatch(setUseSystemFontSize(e.detail.checked))
+            }
+          />
+        </InsetIonItem>
+        <InsetIonItem>
+          <Range
+            disabled={useSystemFontSize}
+            ticks
+            snaps
+            min={0.8}
+            max={1.6}
+            step={0.1}
+            value={fontSizeMultiplier}
+            onIonInput={(e) => {
+              dispatch(setFontSizeMultiplier(e.detail.value as number));
+            }}
+          >
+            <A slot="start" small>
+              A
+            </A>
+            <A slot="end">A</A>
+          </Range>
+        </InsetIonItem>
+      </IonList>
+      <HelperText>Default is two ticks from the left.</HelperText>
+    </>
+  );
+}

src/features/settings/appearance/appearanceSlice.tsx

@@ -0,0 +1,55 @@
+import { PayloadAction, createSlice } from "@reduxjs/toolkit";
+import { get, set } from "../storage";
+import { merge } from "lodash";
+
+const STORAGE_KEYS = {
+  FONT: {
+    FONT_SIZE_MULTIPLIER: "appearance--font-size-multiplier",
+    USE_SYSTEM: "appearance--font-use-system",
+  },
+} as const;
+
+interface AppearanceState {
+  font: {
+    fontSizeMultiplier: number;
+    useSystemFontSize: boolean;
+  };
+}
+
+const initialState: AppearanceState = {
+  font: {
+    fontSizeMultiplier: 1,
+    useSystemFontSize: false,
+  },
+};
+
+const stateFromStorage: AppearanceState = merge(initialState, {
+  font: {
+    fontSizeMultiplier: get(STORAGE_KEYS.FONT.FONT_SIZE_MULTIPLIER),
+    useSystemFontSize: get(STORAGE_KEYS.FONT.USE_SYSTEM),
+  },
+});
+
+export const appearanceSlice = createSlice({
+  name: "appearance",
+  initialState: stateFromStorage,
+  reducers: {
+    setFontSizeMultiplier(state, action: PayloadAction<number>) {
+      state.font.fontSizeMultiplier = action.payload;
+
+      set(STORAGE_KEYS.FONT.FONT_SIZE_MULTIPLIER, action.payload);
+    },
+    setUseSystemFontSize(state, action: PayloadAction<boolean>) {
+      state.font.useSystemFontSize = action.payload;
+
+      set(STORAGE_KEYS.FONT.USE_SYSTEM, action.payload);
+    },
+
+    resetAppearance: () => initialState,
+  },
+});
+
+export const { setFontSizeMultiplier, setUseSystemFontSize } =
+  appearanceSlice.actions;
+
+export default appearanceSlice.reducer;

src/features/settings/storage.ts

@@ -0,0 +1,10 @@
+// eslint-disable-next-line @typescript-eslint/no-explicit-any
+export function get(key: string): any {
+  const data = localStorage.getItem(key);
+  if (!data) return;
+  return JSON.parse(data);
+}
+
+export function set(key: string, value: unknown) {
+  localStorage.setItem(key, JSON.stringify(value));
+}

src/features/user/Profile.tsx

@@ -22,7 +22,7 @@ export const InsetIonItem = styled(IonItem)`
 `;
 
 export const SettingLabel = styled(IonLabel)`
-  margin-left: 1rem;
+  margin-left: 16px;
 `;
 
 interface ProfileProps {

src/index.css

@@ -48,9 +48,3 @@ ion-modal.small {
 ion-modal.small ion-header ion-toolbar:first-of-type {
   padding-top: 0px;
 }
-
-/* TODO: Native font scaling */
-/* (Need a configurable option first) */
-/* body ion-content ion-item {
-  font: -apple-system-body;
-} */

src/pages/profile/ProfileFeedItemsPage.tsx

@@ -27,7 +27,7 @@ export const InsetIonItem = styled(IonItem)`
 `;
 
 export const SettingLabel = styled(IonLabel)`
-  margin-left: 1rem;
+  margin-left: 16px;
 `;
 
 interface ProfileFeedItemsPageProps {

src/pages/settings/AppearancePage.tsx

@@ -0,0 +1,29 @@
+import {
+  IonBackButton,
+  IonButtons,
+  IonHeader,
+  IonPage,
+  IonTitle,
+  IonToolbar,
+} from "@ionic/react";
+import AppContent from "../../features/shared/AppContent";
+import TextSize from "../../features/settings/appearance/TextSize";
+
+export default function AppearancePage() {
+  return (
+    <IonPage className="grey-bg">
+      <IonHeader>
+        <IonToolbar>
+          <IonButtons slot="start">
+            <IonBackButton defaultHref="/settings" text="Settings" />
+          </IonButtons>
+
+          <IonTitle>Appearance</IonTitle>
+        </IonToolbar>
+      </IonHeader>
+      <AppContent scrollY>
+        <TextSize />
+      </AppContent>
+    </IonPage>
+  );
+}