self-resizing text

package.json

@@ -12,14 +12,14 @@
   },
   "license": "MIT",
   "dependencies": {
-    "solid-js": "^1.9.3",
     "@tauri-apps/api": "^2",
-    "@tauri-apps/plugin-opener": "^2"
+    "@tauri-apps/plugin-opener": "^2",
+    "solid-js": "^1.9.3"
   },
   "devDependencies": {
+    "@tauri-apps/cli": "^2",
     "typescript": "~5.6.2",
     "vite": "^6.0.3",
-    "vite-plugin-solid": "^2.11.0",
+    "vite-plugin-solid": "^2.11.0"
-    "@tauri-apps/cli": "^2"
   }
 }

src/App.css

@@ -76,13 +76,13 @@
   flex-direction: column;
   gap: calc(1 * var(--unit));
   font-size: calc(3 * var(--unit));
-  font-weight: 700;
   width: calc((20 * 4 + 3) * var(--unit));
   margin: 0 auto;
 }
 
 .puzzle-header {
   display: flex;
+  align-items: center;
   flex-direction: row;
   > h1 {
     flex-grow: 1;
@@ -112,10 +112,11 @@
   user-select: none;
   flex-basis: 0;
   flex-grow: 1;
-  padding: 0;
+  padding: calc(1 * var(--unit));
   border-radius: calc(1 * var(--unit));
   background-color: var(--color-foreground-trace);
-  font-weight: 500;
+  font-size: calc(5 * var(--unit));
+  font-weight: 600;
 }
 .badge {
   position: absolute;
@@ -194,6 +195,7 @@ h1 {
 button {
   appearance: none;
   overflow: visible;
+  min-width: 2em;
   background: var(--color-foreground-faint);
   color: var(--color-foreground);
   font-size: inherit;
@@ -202,7 +204,7 @@ button {
   border-radius: calc(1 * var(--unit, 0.5em));
 }
 button:disabled {
-  opacity: 0.5;
+  opacity: 0.25;
 }
 button:focus-visible, button:hover {
   box-shadow: 0 0 3em -1.5em inset var(--color-foreground)

src/App.tsx

@@ -1,6 +1,7 @@
 import { For } from "solid-js";
 import "./App.css";
 import useAppModel from "./useAppModel";
+import FitText from "./FitText";
 
 function App() {
   const {
@@ -35,6 +36,7 @@ function App() {
               on:input={({ target: { value } }) =>
                 handleSelectGame(parseInt(value, 10))
               }
+              value={store.puzzleId}
             >
               <For each={connections}>
                 {({ id }) => <option value={id}>{id}</option>}
@@ -53,6 +55,7 @@ function App() {
             </button>
           </div>
         </header>
+        <div>Create four groups of four words!</div>
         <For each={store.solvedGroups}>
           {({ group, level, members }) => (
             <div class="puzzle-row">
@@ -68,7 +71,7 @@ function App() {
             <div class="puzzle-row">
               {[0, 1, 2, 3].map((col) => {
                 const index = 4 * row + col;
-                const answer = getFromPuzzle(index).answer;
+                const answer = () => getFromPuzzle(index).answer;
                 return (
                   <button
                     classList={{
@@ -85,7 +88,7 @@ function App() {
                       });
                     }}
                   >
-                    {answer}
+                    <FitText body={answer} />
                     {store.pinnedCount > index && <div class="badge">🔒</div>}
                   </button>
                 );

src/FitText.tsx

@@ -0,0 +1,48 @@
+import { createEffect, createSignal, on, type Accessor } from "solid-js";
+
+export default function FitText(props: { body: Accessor<string> }) {
+  let textRef: SVGTextElement | undefined;
+  const [width, setWidth] = createSignal(100);
+  const [height, setHeight] = createSignal(100);
+
+  createEffect(
+    on(
+      props.body,
+      async () => {
+        setWidth(100)
+        setHeight(100)
+        await new Promise(resolve => setTimeout(resolve, 1))
+        const bounds = textRef?.getBBox();
+        if (bounds === undefined) {
+          return;
+        }
+        setWidth(bounds.width);
+        setHeight(bounds.height);
+      }
+    )
+  )
+
+  return (
+    <svg
+      style={{
+        width: "100%",
+        "max-height": "50%",
+      }}
+      viewBox={`0 0 ${width()} ${height()}`}
+      overflow="visible"
+      fill="currentcolor"
+    >
+      <text
+        ref={textRef}
+        x="50%"
+        y="50%"
+        dominant-baseline="central"
+        text-anchor="middle"
+        font-size="1rem"
+        font-family="inherit"
+      >
+        {props.body()}
+      </text>
+    </svg>
+  );
+}