feat(主题设置): 添加彩虹模式功能并允许切换主题模式

- 在主题设置中添加彩虹模式，支持动态变换主题颜色
- 新增主题模式切换功能（亮色/暗色/自动）
- 修改颜色选择器逻辑，支持临时保存颜色值
- 添加彩虹模式速率控制功能
- 移除强制暗色模式和固定主题颜色的限制

src/components/widget/DisplaySettings.svelte

@@ -1,21 +1,108 @@
 <script lang="ts">
-
+import { onMount } from "svelte";
 import Icon from "@iconify/svelte";
-import { getDefaultHue, getHue, setHue } from "@utils/setting-utils";
+import {
+	getDefaultHue,
+	getHue,
+	setHue,
+	getStoredTheme,
+	setTheme,
+	getRainbowMode,
+	setRainbowMode,
+	getRainbowSpeed,
+	setRainbowSpeed,
+} from "@utils/setting-utils";
+import { AUTO_MODE, DARK_MODE, LIGHT_MODE } from "@constants/constants";
 
 let hue = getHue();
+let theme = getStoredTheme();
+let isRainbowMode = getRainbowMode();
+let rainbowSpeed = getRainbowSpeed();
+let animationId: number;
+
 const defaultHue = getDefaultHue();
 
 function resetHue() {
 	hue = getDefaultHue();
 }
 
-$: if (hue || hue === 0) {
+$: if ((hue || hue === 0) && !isRainbowMode) {
 	setHue(hue);
 }
+
+function switchTheme(newTheme: string) {
+	theme = newTheme;
+	setTheme(newTheme);
+}
+
+function updateRainbow() {
+	if (!isRainbowMode) return;
+
+	hue = (hue + rainbowSpeed * 0.05) % 360;
+	setHue(hue, false);
+
+	animationId = requestAnimationFrame(updateRainbow);
+}
+
+function toggleRainbow() {
+	isRainbowMode = !isRainbowMode;
+	setRainbowMode(isRainbowMode);
+
+	if (isRainbowMode) {
+		updateRainbow();
+	} else {
+		cancelAnimationFrame(animationId);
+		setHue(hue, true);
+	}
+}
+
+function onSpeedChange() {
+	setRainbowSpeed(rainbowSpeed);
+}
+
+onMount(() => {
+	if (isRainbowMode) {
+		updateRainbow();
+	}
+    return () => {
+        if (animationId) cancelAnimationFrame(animationId);
+    }
+});
 </script>
 
 <div id="display-setting" class="float-panel float-panel-closed absolute transition-all w-80 right-4 px-4 py-4">
+    <div class="flex flex-row gap-2 mb-3 items-center justify-between">
+        <div class="flex gap-2 font-bold text-lg text-neutral-900 dark:text-neutral-100 transition relative ml-3
+            before:w-1 before:h-4 before:rounded-md before:bg-[var(--primary)]
+            before:absolute before:-left-3 before:top-[0.33rem]"
+        >
+            主题模式
+        </div>
+        <div class="flex gap-1">
+            <button aria-label="Light Mode"
+                class="w-10 h-7 rounded-md transition flex items-center justify-center active:scale-90
+                {theme === LIGHT_MODE ? 'bg-[var(--primary)] text-white' : 'bg-[var(--btn-regular-bg)] text-[var(--btn-content)] hover:bg-[var(--btn-regular-bg-hover)]'}"
+                on:click={() => switchTheme(LIGHT_MODE)}
+            >
+                <Icon icon="material-symbols:wb-sunny-rounded" class="text-[1.1rem]"></Icon>
+            </button>
+            <button aria-label="Dark Mode"
+                class="w-10 h-7 rounded-md transition flex items-center justify-center active:scale-90
+                {theme === DARK_MODE ? 'bg-[var(--primary)] text-white' : 'bg-[var(--btn-regular-bg)] text-[var(--btn-content)] hover:bg-[var(--btn-regular-bg-hover)]'}"
+                on:click={() => switchTheme(DARK_MODE)}
+            >
+                <Icon icon="material-symbols:dark-mode-rounded" class="text-[1.1rem]"></Icon>
+            </button>
+            <button aria-label="Auto Mode"
+                class="w-10 h-7 rounded-md transition flex items-center justify-center active:scale-90
+                {theme === AUTO_MODE ? 'bg-[var(--primary)] text-white' : 'bg-[var(--btn-regular-bg)] text-[var(--btn-content)] hover:bg-[var(--btn-regular-bg-hover)]'}"
+                on:click={() => switchTheme(AUTO_MODE)}
+            >
+                <Icon icon="material-symbols:hdr-auto-rounded" class="text-[1.1rem]"></Icon>
+            </button>
+        </div>
+    </div>
+
     <div class="flex flex-row gap-2 mb-3 items-center justify-between">
         <div class="flex gap-2 font-bold text-lg text-neutral-900 dark:text-neutral-100 transition relative ml-3
             before:w-1 before:h-4 before:rounded-md before:bg-[var(--primary)]
@@ -32,14 +119,45 @@ $: if (hue || hue === 0) {
         <div class="flex gap-1">
             <div id="hueValue" class="transition bg-[var(--btn-regular-bg)] w-10 h-7 rounded-md flex justify-center
             font-bold text-sm items-center text-[var(--btn-content)]">
-                {hue}
+                {Math.round(hue)}
             </div>
         </div>
     </div>
-    <div class="w-full h-6 px-1 bg-[oklch(0.80_0.10_0)] dark:bg-[oklch(0.70_0.10_0)] rounded select-none">
-        <input aria-label="主题色彩" type="range" min="0" max="360" bind:value={hue}
+    <div class="w-full h-6 px-1 bg-[oklch(0.80_0.10_0)] dark:bg-[oklch(0.70_0.10_0)] rounded select-none mb-3">
+        <input aria-label="主题色彩" type="range" min="0" max="360" bind:value={hue} disabled={isRainbowMode}
                class="slider" id="colorSlider" step="5" style="width: 100%">
     </div>
+
+    <div class="flex flex-row gap-2 mb-3 items-center justify-between">
+        <div class="flex gap-2 font-bold text-lg text-neutral-900 dark:text-neutral-100 transition relative ml-3
+            before:w-1 before:h-4 before:rounded-md before:bg-[var(--primary)]
+            before:absolute before:-left-3 before:top-[0.33rem]"
+        >
+            彩虹模式
+        </div>
+        <input type="checkbox" class="toggle-switch" checked={isRainbowMode} on:change={toggleRainbow} />
+    </div>
+
+    {#if isRainbowMode}
+    <div class="flex flex-row gap-2 mb-3 items-center justify-between transition-all" >
+        <div class="flex gap-2 font-bold text-lg text-neutral-900 dark:text-neutral-100 transition relative ml-3
+            before:w-1 before:h-4 before:rounded-md before:bg-[var(--primary)]
+            before:absolute before:-left-3 before:top-[0.33rem]"
+        >
+            变换速率
+        </div>
+        <div class="flex gap-1">
+             <div class="transition bg-[var(--btn-regular-bg)] w-10 h-7 rounded-md flex justify-center
+            font-bold text-sm items-center text-[var(--btn-content)]">
+                {rainbowSpeed}
+            </div>
+        </div>
+    </div>
+    <div class="w-full h-6 px-1 bg-[var(--btn-regular-bg)] rounded select-none">
+        <input aria-label="变换速率" type="range" min="1" max="100" bind:value={rainbowSpeed} on:change={onSpeedChange}
+               class="slider" step="1" style="width: 100%">
+    </div>
+    {/if}
 </div>
 
 
@@ -89,4 +207,28 @@ $: if (hue || hue === 0) {
           &:active
             background rgba(255, 255, 255, 0.6)
 
+      .toggle-switch
+        appearance none
+        width 3rem
+        height 1.5rem
+        background var(--btn-regular-bg)
+        border-radius 999px
+        position relative
+        cursor pointer
+        transition background 0.3s
+        &::after
+            content ''
+            position absolute
+            top 0.25rem
+            left 0.25rem
+            width 1rem
+            height 1rem
+            background var(--btn-content)
+            border-radius 50%
+            transition transform 0.3s
+        &:checked
+            background var(--primary)
+            &::after
+                transform translateX(1.5rem)
+                background white
 </style>

src/config.ts

@@ -20,8 +20,8 @@ export const siteConfig: SiteConfig = {
 	lang: "zh_CN", // 'en', 'zh_CN', 'zh_TW', 'ja', 'ko', 'es', 'th'
 	themeColor: {
 		hue: 361, // Default hue for the theme color, from 0 to 360. e.g. red: 0, teal: 200, cyan: 250, pink: 345
-		fixed: true, // Hide the theme color picker for visitors
-		forceDarkMode: true, // Force dark mode and hide theme switcher
+		fixed: false, // Hide the theme color picker for visitors
+		forceDarkMode: false, // Force dark mode and hide theme switcher
 	},
 	banner: {
 		enable: false,

src/utils/setting-utils.ts

@@ -18,8 +18,10 @@ export function getHue(): number {
 	return stored ? Number.parseInt(stored) : getDefaultHue();
 }
 
-export function setHue(hue: number): void {
-	localStorage.setItem("hue", String(hue));
+export function setHue(hue: number, save: boolean = true): void {
+	if (save) {
+		localStorage.setItem("hue", String(hue));
+	}
 	const r = document.querySelector(":root") as HTMLElement;
 	if (!r) {
 		return;
@@ -27,6 +29,24 @@ export function setHue(hue: number): void {
 	r.style.setProperty("--hue", String(hue));
 }
 
+export function getRainbowMode(): boolean {
+	const stored = localStorage.getItem("rainbow-mode");
+	return stored === "true";
+}
+
+export function setRainbowMode(enabled: boolean): void {
+	localStorage.setItem("rainbow-mode", String(enabled));
+}
+
+export function getRainbowSpeed(): number {
+	const stored = localStorage.getItem("rainbow-speed");
+	return stored ? Number.parseFloat(stored) : 5; // Default speed
+}
+
+export function setRainbowSpeed(speed: number): void {
+	localStorage.setItem("rainbow-speed", String(speed));
+}
+
 export function applyThemeToDocument(theme: LIGHT_DARK_MODE) {
 	switch (theme) {
 		case LIGHT_MODE: