| 1 | "use client"; |
| 2 | |
| 3 | import { Plus, RotateCcw } from "lucide-react"; |
| 4 | import React, { useCallback, useMemo, useState } from "react"; |
| 5 | |
| 6 | import { Button } from "@/components/ui/button"; |
| 7 | import { Dialog, DialogContent, DialogTitle } from "@/components/ui/dialog"; |
| 8 | import { ScrollArea } from "@/components/ui/scroll-area"; |
| 9 | import { Tabs, TabsContent, TabsList, TabsTrigger } from "@/components/ui/tabs"; |
| 10 | import { useDebouncedSave } from "@/hooks/presentation/useDebouncedSave"; |
| 11 | import { resolvePresentationThemeData } from "@/lib/presentation/theme-resolution"; |
| 12 | import { themes, type ThemeProperties } from "@/lib/presentation/themes"; |
| 13 | import { cn } from "@/lib/utils"; |
| 14 | import { usePresentationState } from "@/states/presentation-state"; |
| 15 | import { DEFAULT_COLORS } from "@/components/ui/color-picker"; |
| 16 | import { BackgroundImageEditor } from "./BackgroundImageEditor"; |
| 17 | import { GradientMaker } from "./GradientMaker"; |
| 18 | |
| 19 | type GradientType = "solid" | "linear" | "radial"; |
| 20 | type GradientStop = { id: string; color: string; position: number }; |
| 21 | type BackgroundGradient = { |
| 22 | type: GradientType; |
| 23 | angle?: number; // linear |
| 24 | shape?: "circle" | "ellipse"; // radial |
| 25 | at?: { x: number; y: number }; // radial position (percent) |
| 26 | stops: GradientStop[]; |
| 27 | }; |
| 28 | |
| 29 | function isGradientString(input: string | undefined | null) { |
| 30 | if (!input) return false; |
| 31 | const v = input.toLowerCase().trim(); |
| 32 | return v.startsWith("linear-gradient") || v.startsWith("radial-gradient"); |
| 33 | } |
| 34 | |
| 35 | function buildStopsCss(stops: GradientStop[]) { |
| 36 | return stops |
| 37 | .slice() |
| 38 | .sort((a, b) => a.position - b.position) |
| 39 | .map( |
| 40 | (s) => |
| 41 | `${s.color} ${Math.round(Math.max(0, Math.min(100, s.position)))}%`, |
| 42 | ) |
| 43 | .join(", "); |
| 44 | } |
| 45 | |
| 46 | function toLinearCss(g: Pick<BackgroundGradient, "angle" | "stops">) { |
| 47 | const angle = Math.round(g.angle ?? 135); |
| 48 | return `linear-gradient(${angle}deg, ${buildStopsCss(g.stops ?? [])})`; |
| 49 | } |
| 50 | |
| 51 | function toRadialCss(g: Pick<BackgroundGradient, "shape" | "at" | "stops">) { |
| 52 | const shape = g.shape ?? "circle"; |
| 53 | const at = g.at ?? { x: 50, y: 50 }; |
| 54 | return `radial-gradient(${shape} at ${Math.round(at.x)}% ${Math.round(at.y)}%, ${buildStopsCss(g.stops ?? [])})`; |
| 55 | } |
| 56 | |
| 57 | export function BackgroundPanel() { |
| 58 | const { theme, customThemeData, pageBackground, setPageBackground } = |
| 59 | usePresentationState(); |
| 60 | const { save } = useDebouncedSave({ delay: 800 }); |
| 61 | |
| 62 | const baseTheme: ThemeProperties = useMemo(() => { |
| 63 | return ( |
| 64 | resolvePresentationThemeData({ customThemeData, theme }) ?? |
| 65 | themes.mystique |
| 66 | ); |
| 67 | }, [customThemeData, theme]); |
| 68 | |
| 69 | const modeColors = baseTheme.colors; |
| 70 | |
| 71 | const updateConfig = useCallback( |
| 72 | (patch: Record<string, unknown>) => { |
| 73 | const prev = (pageBackground ?? {}) as Record<string, unknown>; |
| 74 | setPageBackground({ ...prev, ...patch }); |
| 75 | }, |
| 76 | [pageBackground, setPageBackground], |
| 77 | ); |
| 78 | |
| 79 | const [isMakerOpen, setIsMakerOpen] = useState<boolean>(false); |
| 80 | // Selected solid color derived from current pageBackground |
| 81 | const selectedSolid = useMemo(() => { |
| 82 | const override = pageBackground?.backgroundOverride as string | undefined; |
| 83 | return isGradientString(override) |
| 84 | ? modeColors.background |
| 85 | : (override ?? modeColors.background); |
| 86 | }, [pageBackground?.backgroundOverride, modeColors.background]); |
| 87 | |
| 88 | const onSolidChange = useCallback( |
| 89 | (value: string) => { |
| 90 | updateConfig({ backgroundType: "solid", backgroundOverride: value }); |
| 91 | save({ includeMetadata: true }); |
| 92 | }, |
| 93 | [updateConfig, save], |
| 94 | ); |
| 95 | |
| 96 | const onReset = useCallback(() => { |
| 97 | const prev = (pageBackground ?? {}) as Record<string, unknown>; |
| 98 | const { |
| 99 | backgroundOverride: _o, |
| 100 | backgroundType: _t, |
| 101 | backgroundGradient: _g, |
| 102 | ...rest |
| 103 | } = prev; |
| 104 | setPageBackground(rest); |
| 105 | save({ includeMetadata: true }); |
| 106 | }, [pageBackground, setPageBackground, save]); |
| 107 | |
| 108 | return ( |
| 109 | <div className="flex h-full flex-col"> |
| 110 | <div className="space-y-4 border-b border-border bg-card px-4 pb-4"> |
| 111 | <div className="flex gap-2"> |
| 112 | <Button |
| 113 | onClick={() => setIsMakerOpen(true)} |
| 114 | className="flex-1" |
| 115 | size="sm" |
| 116 | > |
| 117 | <Plus className="mr-2 h-4 w-4" /> |
| 118 | Create Custom |
| 119 | </Button> |
| 120 | <Button |
| 121 | variant="outline" |
| 122 | onClick={onReset} |
| 123 | size="sm" |
| 124 | className="flex-1 bg-transparent" |
| 125 | > |
| 126 | <RotateCcw className="mr-2 h-4 w-4" /> |
| 127 | Reset |
| 128 | </Button> |
| 129 | </div> |
| 130 | </div> |
| 131 | |
| 132 | <div className="h-full overflow-hidden"> |
| 133 | <Tabs |
| 134 | defaultValue={ |
| 135 | (pageBackground?.backgroundType as GradientType) || "solid" |
| 136 | } |
| 137 | className="flex h-full flex-col" |
| 138 | > |
| 139 | <TabsList className="w-full justify-start gap-0 rounded-none border-b border-border bg-transparent p-0"> |
| 140 | <TabsTrigger |
| 141 | value="solid" |
| 142 | className="flex-1 rounded-none border-b-2 border-transparent px-4 py-3 data-[state=active]:border-primary data-[state=active]:bg-transparent" |
| 143 | > |
| 144 | Solid |
| 145 | </TabsTrigger> |
| 146 | <TabsTrigger |
| 147 | value="linear" |
| 148 | className="flex-1 rounded-none border-b-2 border-transparent px-4 py-3 data-[state=active]:border-primary data-[state=active]:bg-transparent" |
| 149 | > |
| 150 | Linear |
| 151 | </TabsTrigger> |
| 152 | <TabsTrigger |
| 153 | value="radial" |
| 154 | className="flex-1 rounded-none border-b-2 border-transparent px-4 py-3 data-[state=active]:border-primary data-[state=active]:bg-transparent" |
| 155 | > |
| 156 | Radial |
| 157 | </TabsTrigger> |
| 158 | <TabsTrigger |
| 159 | value="image" |
| 160 | className="flex-1 rounded-none border-b-2 border-transparent px-4 py-3 data-[state=active]:border-primary data-[state=active]:bg-transparent" |
| 161 | > |
| 162 | Image |
| 163 | </TabsTrigger> |
| 164 | </TabsList> |
| 165 | |
| 166 | <ScrollArea className="flex-1"> |
| 167 | <div className="p-6"> |
| 168 | <TabsContent |
| 169 | value="solid" |
| 170 | className="m-0 flex justify-center space-y-4" |
| 171 | > |
| 172 | <SolidGrid |
| 173 | selected={selectedSolid} |
| 174 | onPick={(c) => onSolidChange(c)} |
| 175 | /> |
| 176 | </TabsContent> |
| 177 | <TabsContent value="linear" className="m-0"> |
| 178 | <div className="flex justify-center"> |
| 179 | <LinearJsonGrid |
| 180 | onPick={(preset) => { |
| 181 | updateConfig({ |
| 182 | backgroundType: "linear", |
| 183 | backgroundGradient: { |
| 184 | type: "linear", |
| 185 | ...preset.gradient, |
| 186 | }, |
| 187 | backgroundOverride: preset.css, |
| 188 | }); |
| 189 | save(); |
| 190 | }} |
| 191 | count={300} |
| 192 | /> |
| 193 | </div> |
| 194 | </TabsContent> |
| 195 | <TabsContent value="radial" className="m-0"> |
| 196 | <div className="flex justify-center"> |
| 197 | <RadialJsonGrid |
| 198 | onPick={(preset) => { |
| 199 | updateConfig({ |
| 200 | backgroundType: "radial", |
| 201 | backgroundGradient: { |
| 202 | type: "radial", |
| 203 | ...preset.gradient, |
| 204 | }, |
| 205 | backgroundOverride: preset.css, |
| 206 | }); |
| 207 | save(); |
| 208 | }} |
| 209 | count={300} |
| 210 | /> |
| 211 | </div> |
| 212 | </TabsContent> |
| 213 | <TabsContent value="image" className="m-0"> |
| 214 | <BackgroundImageEditor |
| 215 | config={pageBackground} |
| 216 | updateConfig={updateConfig} |
| 217 | onApply={() => save()} |
| 218 | /> |
| 219 | </TabsContent> |
| 220 | </div> |
| 221 | </ScrollArea> |
| 222 | </Tabs> |
| 223 | </div> |
| 224 | |
| 225 | <Dialog open={isMakerOpen} onOpenChange={setIsMakerOpen}> |
| 226 | <DialogContent className="max-w-6xl"> |
| 227 | <DialogTitle>Create Custom Background</DialogTitle> |
| 228 | <div className="mt-4"> |
| 229 | <GradientMaker |
| 230 | onApply={(css) => { |
| 231 | updateConfig({ backgroundOverride: css }); |
| 232 | save(); |
| 233 | }} |
| 234 | onClose={() => setIsMakerOpen(false)} |
| 235 | /> |
| 236 | </div> |
| 237 | </DialogContent> |
| 238 | </Dialog> |
| 239 | </div> |
| 240 | ); |
| 241 | } |
| 242 | |
| 243 | function SolidGrid({ |
| 244 | selected, |
| 245 | onPick, |
| 246 | paletteSize = DEFAULT_COLORS.length, |
| 247 | }: { |
| 248 | selected?: string; |
| 249 | onPick: (color: string) => void; |
| 250 | paletteSize?: number; |
| 251 | }) { |
| 252 | const palette = useMemo( |
| 253 | () => DEFAULT_COLORS.slice(0, paletteSize), |
| 254 | [paletteSize], |
| 255 | ); |
| 256 | return ( |
| 257 | <div className="grid h-full w-max grid-cols-7 place-items-center gap-3"> |
| 258 | {/* Custom color picker as the first grid item */} |
| 259 | <div className="relative"> |
| 260 | <input |
| 261 | type="color" |
| 262 | value={selected ?? "#ffffff"} |
| 263 | onChange={(e) => onPick(e.target.value)} |
| 264 | className="absolute size-10 cursor-pointer opacity-0" |
| 265 | aria-label="Custom color" |
| 266 | title="Custom color" |
| 267 | /> |
| 268 | <button |
| 269 | type="button" |
| 270 | className="flex size-10 items-center justify-center rounded-lg border-2 border-dashed border-muted-foreground/30 bg-muted transition-all hover:scale-110 hover:border-primary hover:bg-primary/10" |
| 271 | > |
| 272 | <Plus className="h-4 w-4 text-muted-foreground" /> |
| 273 | </button> |
| 274 | </div> |
| 275 | |
| 276 | {/* Palette colors as grid items */} |
| 277 | {palette.map((c) => ( |
| 278 | <button |
| 279 | key={c.value} |
| 280 | type="button" |
| 281 | onClick={() => onPick(c.value)} |
| 282 | className={cn( |
| 283 | "size-10 rounded-lg border-2 transition-all hover:scale-110 focus:ring-2 focus:ring-primary focus:ring-offset-2", |
| 284 | selected === c.value |
| 285 | ? "border-primary ring-2 ring-primary ring-offset-2" |
| 286 | : "border-transparent hover:border-primary/50", |
| 287 | )} |
| 288 | style={{ background: c.value }} |
| 289 | aria-label={c.name} |
| 290 | title={`${c.name} ${c.value}`} |
| 291 | /> |
| 292 | ))} |
| 293 | </div> |
| 294 | ); |
| 295 | } |
| 296 | |
| 297 | type LinearPreset = { |
| 298 | css: string; |
| 299 | gradient: Pick<BackgroundGradient, "angle" | "stops">; |
| 300 | }; |
| 301 | type RadialPreset = { |
| 302 | css: string; |
| 303 | gradient: Pick<BackgroundGradient, "shape" | "at" | "stops">; |
| 304 | }; |
| 305 | |
| 306 | type JsonGradient = { name: string; colors: string[] }; |
| 307 | |
| 308 | async function loadGradients(): Promise<JsonGradient[]> { |
| 309 | try { |
| 310 | const mod = await import("./gradient.json"); |
| 311 | const data = (mod?.default ?? []) as unknown; |
| 312 | const list = Array.isArray(data) ? (data as JsonGradient[]) : []; |
| 313 | // sanitize: only keep entries with at least one valid color string |
| 314 | return list.filter( |
| 315 | (g) => |
| 316 | g && |
| 317 | Array.isArray(g.colors) && |
| 318 | g.colors.some((c) => typeof c === "string" && c.trim().length > 0), |
| 319 | ); |
| 320 | } catch { |
| 321 | return []; |
| 322 | } |
| 323 | } |
| 324 | |
| 325 | // Assume JSON colors are valid and present (author-provided) |
| 326 | function normalizeColors(colors: unknown): string[] { |
| 327 | return colors as string[]; |
| 328 | } |
| 329 | |
| 330 | function toLinearFromJson(colors: string[], angle: number): LinearPreset { |
| 331 | const safe = normalizeColors(colors); |
| 332 | const stops: GradientStop[] = safe.map((c, idx) => ({ |
| 333 | id: `j-${idx}`, |
| 334 | color: c, |
| 335 | position: Math.round((idx / (safe.length - 1)) * 100), |
| 336 | })); |
| 337 | const gradient = { angle, stops }; |
| 338 | return { css: toLinearCss(gradient), gradient }; |
| 339 | } |
| 340 | |
| 341 | function toRadialFromJson(colors: string[]): RadialPreset { |
| 342 | const safe = normalizeColors(colors); |
| 343 | const stops: GradientStop[] = safe.map((c, idx) => ({ |
| 344 | id: `j-${idx}`, |
| 345 | color: c, |
| 346 | position: Math.round((idx / (safe.length - 1)) * 100), |
| 347 | })); |
| 348 | const gradient = { shape: "circle" as const, at: { x: 50, y: 50 }, stops }; |
| 349 | return { css: toRadialCss(gradient), gradient }; |
| 350 | } |
| 351 | |
| 352 | function LinearJsonGrid({ |
| 353 | onPick, |
| 354 | count = 300, |
| 355 | }: { |
| 356 | onPick: (preset: LinearPreset) => void; |
| 357 | count?: number; |
| 358 | }) { |
| 359 | const [items, setItems] = React.useState<LinearPreset[] | null>(null); |
| 360 | React.useEffect(() => { |
| 361 | let cancelled = false; |
| 362 | (async () => { |
| 363 | const json = await loadGradients(); |
| 364 | if (cancelled) return; |
| 365 | const presets = json |
| 366 | .slice(0, count) |
| 367 | .map((g, idx) => |
| 368 | toLinearFromJson(g.colors ?? [], 135 + (idx % 4) * 15), |
| 369 | ); |
| 370 | setItems(presets); |
| 371 | })(); |
| 372 | return () => { |
| 373 | cancelled = true; |
| 374 | }; |
| 375 | }, [count]); |
| 376 | |
| 377 | if (!items) { |
| 378 | return ( |
| 379 | <div className="grid w-max grid-cols-4 place-items-center gap-3"> |
| 380 | {Array.from({ length: 24 }).map((_, i) => ( |
| 381 | <div |
| 382 | key={i} |
| 383 | className="h-16 w-20 animate-pulse rounded-lg bg-muted" |
| 384 | /> |
| 385 | ))} |
| 386 | </div> |
| 387 | ); |
| 388 | } |
| 389 | |
| 390 | return ( |
| 391 | <div className="grid w-max grid-cols-4 place-items-center gap-3"> |
| 392 | {items.map((p, i) => ( |
| 393 | <button |
| 394 | key={i} |
| 395 | type="button" |
| 396 | onClick={() => onPick(p)} |
| 397 | className="h-16 w-20 rounded-lg border-2 border-border transition-all hover:scale-105 hover:border-primary hover:shadow-md" |
| 398 | style={{ background: p.css }} |
| 399 | aria-label={`Linear preset ${i + 1}`} |
| 400 | title={p.css} |
| 401 | /> |
| 402 | ))} |
| 403 | </div> |
| 404 | ); |
| 405 | } |
| 406 | |
| 407 | function RadialJsonGrid({ |
| 408 | onPick, |
| 409 | count = 300, |
| 410 | }: { |
| 411 | onPick: (preset: RadialPreset) => void; |
| 412 | count?: number; |
| 413 | }) { |
| 414 | const [items, setItems] = React.useState<RadialPreset[] | null>(null); |
| 415 | React.useEffect(() => { |
| 416 | let cancelled = false; |
| 417 | (async () => { |
| 418 | const json = await loadGradients(); |
| 419 | if (cancelled) return; |
| 420 | const presets = json |
| 421 | .slice(0, count) |
| 422 | .map((g) => toRadialFromJson(g.colors ?? [])); |
| 423 | setItems(presets); |
| 424 | })(); |
| 425 | return () => { |
| 426 | cancelled = true; |
| 427 | }; |
| 428 | }, [count]); |
| 429 | |
| 430 | if (!items) { |
| 431 | return ( |
| 432 | <div className="grid w-max grid-cols-4 place-items-center gap-3"> |
| 433 | {Array.from({ length: 24 }).map((_, i) => ( |
| 434 | <div |
| 435 | key={i} |
| 436 | className="h-16 w-20 animate-pulse rounded-lg bg-muted" |
| 437 | /> |
| 438 | ))} |
| 439 | </div> |
| 440 | ); |
| 441 | } |
| 442 | |
| 443 | return ( |
| 444 | <div className="grid w-max grid-cols-4 place-items-center gap-3"> |
| 445 | {items.map((p, i) => ( |
| 446 | <button |
| 447 | key={i} |
| 448 | type="button" |
| 449 | onClick={() => onPick(p)} |
| 450 | className="h-16 w-20 rounded-lg border-2 border-border transition-all hover:scale-105 hover:border-primary hover:shadow-md" |
| 451 | style={{ background: p.css }} |
| 452 | aria-label={`Radial preset ${i + 1}`} |
| 453 | title={p.css} |
| 454 | /> |
| 455 | ))} |
| 456 | </div> |
| 457 | ); |
| 458 | } |
| 459 |