feat(studio): add FlatColorGradingSection Preset and Custom LUT rows

packages/studio/src/components/editor/propertyPanelFlatColorGradingSection.test.tsx

@@ -3,7 +3,10 @@
 import React, { act } from "react";
 import { createRoot } from "react-dom/client";
 import { afterEach, describe, expect, it, vi } from "vitest";
-import { FlatColorGradingAccessory } from "./propertyPanelFlatColorGradingSection";
+import {
+  FlatColorGradingAccessory,
+  FlatColorGradingSection,
+} from "./propertyPanelFlatColorGradingSection";
 import { normalizeHfColorGrading } from "@hyperframes/core/color-grading";
 
 (globalThis as unknown as { IS_REACT_ACT_ENVIRONMENT: boolean }).IS_REACT_ACT_ENVIRONMENT = true;
@@ -71,3 +74,112 @@ describe("FlatColorGradingAccessory", () => {
     act(() => root.unmount());
   });
 });
+
+function neutralPropsBase() {
+  return {
+    grading: neutralGrading(),
+    assets: [] as string[],
+    onCommitColorGrading: vi.fn(),
+    applyScope: "source-file" as const,
+    applyBusy: false,
+    onSetApplyScope: vi.fn(),
+    onApplyToScope: vi.fn(),
+    onApplyScopeAvailable: true,
+    mediaMetadata: null,
+  };
+}
+
+describe("FlatColorGradingSection — Preset + LUT", () => {
+  it("renders the Preset dropdown with id/label pairs and fires onCommitColorGrading on change", () => {
+    const onCommitColorGrading = vi.fn();
+    const { host, root } = renderInto(
+      <FlatColorGradingSection
+        {...neutralPropsBase()}
+        onCommitColorGrading={onCommitColorGrading}
+      />,
+    );
+    const presetSelect = host.querySelector<HTMLSelectElement>(
+      '[data-flat-grade-preset="true"] select',
+    );
+    if (!presetSelect) throw new Error("expected a preset select");
+    expect(presetSelect.value).toBe("neutral");
+    act(() => {
+      presetSelect.value = "fresh-pop";
+      presetSelect.dispatchEvent(new Event("change", { bubbles: true }));
+    });
+    expect(onCommitColorGrading).toHaveBeenCalledTimes(1);
+    expect(onCommitColorGrading.mock.calls[0][0].preset).toBe("fresh-pop");
+    act(() => root.unmount());
+  });
+
+  it("shows the Custom LUT row collapsed by default, expanding to reveal the strength slider when a LUT is set", () => {
+    const grading = { ...neutralGrading(), lut: { src: "assets/luts/warm.cube", intensity: 0.8 } };
+    const { host, root } = renderInto(
+      <FlatColorGradingSection {...neutralPropsBase()} grading={grading} />,
+    );
+    const lutToggle = host.querySelector<HTMLButtonElement>('[data-flat-grade-lut-toggle="true"]');
+    expect(lutToggle).not.toBeNull();
+    act(() => lutToggle?.dispatchEvent(new MouseEvent("click", { bubbles: true })));
+    expect(host.textContent).toContain("warm.cube");
+    act(() => root.unmount());
+  });
+
+  it("commits the selected catalog LUT via the select control, resetting intensity to 1 when switching LUTs", () => {
+    const onCommitColorGrading = vi.fn();
+    const grading = { ...neutralGrading(), lut: { src: "assets/luts/warm.cube", intensity: 0.5 } };
+    const { host, root } = renderInto(
+      <FlatColorGradingSection
+        {...neutralPropsBase()}
+        assets={["assets/luts/warm.cube", "assets/luts/cool.cube"]}
+        grading={grading}
+        onCommitColorGrading={onCommitColorGrading}
+      />,
+    );
+    const lutToggle = host.querySelector<HTMLButtonElement>('[data-flat-grade-lut-toggle="true"]');
+    act(() => lutToggle?.dispatchEvent(new MouseEvent("click", { bubbles: true })));
+    const lutSelect = host.querySelector<HTMLSelectElement>('[data-flat-grade-lut-select="true"]');
+    if (!lutSelect) throw new Error("expected a LUT catalog select");
+    act(() => {
+      lutSelect.value = "assets/luts/cool.cube";
+      lutSelect.dispatchEvent(new Event("change", { bubbles: true }));
+    });
+    expect(onCommitColorGrading).toHaveBeenCalledTimes(1);
+    expect(onCommitColorGrading.mock.calls[0][0].lut).toEqual({
+      src: "assets/luts/cool.cube",
+      intensity: 1,
+    });
+    act(() => root.unmount());
+  });
+
+  it("imports a LUT via the hidden file input and commits the resolved asset", async () => {
+    const onCommitColorGrading = vi.fn();
+    const onImportAssets = vi.fn().mockResolvedValue(["assets/luts/x.cube"]);
+    const { host, root } = renderInto(
+      <FlatColorGradingSection
+        {...neutralPropsBase()}
+        onCommitColorGrading={onCommitColorGrading}
+        onImportAssets={onImportAssets}
+      />,
+    );
+    const lutToggle = host.querySelector<HTMLButtonElement>('[data-flat-grade-lut-toggle="true"]');
+    act(() => lutToggle?.dispatchEvent(new MouseEvent("click", { bubbles: true })));
+    const fileInput = host.querySelector<HTMLInputElement>('input[type="file"]');
+    if (!fileInput) throw new Error("expected a hidden file input");
+    const file = new File(["cube data"], "x.cube");
+    Object.defineProperty(fileInput, "files", { value: [file], configurable: true });
+    await act(async () => {
+      fileInput.dispatchEvent(new Event("change", { bubbles: true }));
+      await Promise.resolve();
+      await Promise.resolve();
+    });
+    expect(onImportAssets).toHaveBeenCalledTimes(1);
+    expect(onImportAssets.mock.calls[0][0]).toEqual([file]);
+    expect(onImportAssets.mock.calls[0][1]).toBe("assets/luts");
+    expect(onCommitColorGrading).toHaveBeenCalledTimes(1);
+    expect(onCommitColorGrading.mock.calls[0][0].lut).toEqual({
+      src: "assets/luts/x.cube",
+      intensity: 1,
+    });
+    act(() => root.unmount());
+  });
+});

packages/studio/src/components/editor/propertyPanelFlatColorGradingSection.tsx

@@ -1,6 +1,15 @@
-import { isHfColorGradingActive } from "@hyperframes/core/color-grading";
-import { Compare, RotateCcw } from "../../icons/SystemIcons";
-import type { ColorGradingControllerState } from "./useColorGradingController";
+import { useMemo, useRef, useState } from "react";
+import {
+  HF_COLOR_GRADING_PRESETS,
+  isHfColorGradingActive,
+  normalizeHfColorGrading,
+  type NormalizedHfColorGrading,
+} from "@hyperframes/core/color-grading";
+import { Compare, Plus, RotateCcw } from "../../icons/SystemIcons";
+import { LUT_EXT } from "../../utils/mediaTypes";
+import { FlatSelectRow, FlatSlider } from "./propertyPanelFlatPrimitives";
+import { resolveValueTier } from "./propertyPanelValueTier";
+import type { ColorGradingControllerState, MediaMetadata } from "./useColorGradingController";
 
 const STATUS_DOT_CLASS: Record<ColorGradingControllerState["runtimeStatus"]["state"], string> = {
   active: "bg-emerald-400",
@@ -66,3 +75,159 @@ export function FlatColorGradingAccessory({
     </span>
   );
 }
+
+const PRESET_OPTIONS = HF_COLOR_GRADING_PRESETS.map((p) => ({ value: p.id, label: p.label }));
+
+export function FlatColorGradingSection({
+  grading,
+  assets,
+  onImportAssets,
+  onCommitColorGrading,
+  applyScope: _applyScope,
+  applyBusy: _applyBusy,
+  onSetApplyScope: _onSetApplyScope,
+  onApplyToScope: _onApplyToScope,
+  onApplyScopeAvailable: _onApplyScopeAvailable,
+  mediaMetadata: _mediaMetadata,
+}: {
+  grading: NormalizedHfColorGrading;
+  assets: string[];
+  onImportAssets?: (files: FileList, dir?: string) => Promise<string[]>;
+  onCommitColorGrading: (next: NormalizedHfColorGrading) => void;
+  applyScope: "source-file" | "project";
+  applyBusy: boolean;
+  onSetApplyScope: (scope: "source-file" | "project") => void;
+  onApplyToScope: () => void;
+  onApplyScopeAvailable: boolean;
+  mediaMetadata: MediaMetadata | null;
+}) {
+  const lutInputRef = useRef<HTMLInputElement>(null);
+  const [lutOpen, setLutOpen] = useState(false);
+  const lutAssets = useMemo(
+    () => assets.filter((asset) => LUT_EXT.test(asset)).sort((a, b) => a.localeCompare(b)),
+    [assets],
+  );
+  const lut = grading.lut;
+  const selectedLutName = lut?.src ? (lut.src.split("/").pop() ?? lut.src) : null;
+
+  const applyPreset = (presetId: string) => {
+    const next = normalizeHfColorGrading({ preset: presetId, intensity: 1, lut: grading.lut });
+    if (next) onCommitColorGrading(next);
+  };
+  const updateIntensity = (value: number) => {
+    onCommitColorGrading({ ...grading, intensity: value / 100 });
+  };
+  const applyLut = (src: string | null, intensity = 1) => {
+    onCommitColorGrading({ ...grading, lut: src ? { src, intensity } : null });
+  };
+  const importLuts = async (files: FileList | null) => {
+    if (!files?.length || !onImportAssets) return;
+    const uploaded = await onImportAssets(files, "assets/luts");
+    const firstLut = uploaded.find((asset) => LUT_EXT.test(asset));
+    if (firstLut) applyLut(firstLut, 1);
+  };
+
+  return (
+    <div className="space-y-1.5">
+      <div data-flat-grade-preset="true" className="flex min-h-[30px] items-center justify-between">
+        <span className="text-[11px] text-panel-text-2">Preset</span>
+        <FlatSelectRow
+          label=""
+          value={grading.preset ?? "neutral"}
+          options={PRESET_OPTIONS}
+          tier={resolveValueTier(
+            grading.preset === "neutral" ? undefined : (grading.preset ?? undefined),
+            "neutral",
+          )}
+          onChange={applyPreset}
+        />
+      </div>
+      <FlatSlider
+        label="Strength"
+        value={Math.round(grading.intensity * 100)}
+        min={0}
+        max={100}
+        tier={grading.intensity === 1 ? "default" : "explicitCustom"}
+        displayValue={`${Math.round(grading.intensity * 100)}%`}
+        onCommit={updateIntensity}
+        onReset={() => updateIntensity(100)}
+      />
+
+      <div className="border-t border-panel-hairline pt-1.5">
+        <button
+          type="button"
+          data-flat-grade-lut-toggle="true"
+          onClick={() => setLutOpen((v) => !v)}
+          className="flex min-h-[30px] w-full items-center justify-between text-left"
+        >
+          <span className="text-[11px] text-panel-text-2">Custom LUT</span>
+          <svg
+            width="10"
+            height="10"
+            viewBox="0 0 10 10"
+            fill="currentColor"
+            className={`flex-shrink-0 text-panel-text-5 transition-transform ${lutOpen ? "rotate-90" : ""}`}
+          >
+            <path d="M2 3l3 4 3-4z" />
+          </svg>
+        </button>
+        {lutOpen && (
+          <div className="space-y-1.5 pb-1">
+            <div className="flex items-center justify-between gap-2">
+              <span className="min-w-0 flex-1 truncate font-mono text-[10px] text-panel-text-3">
+                {selectedLutName ?? "None"}
+              </span>
+              <select
+                data-flat-grade-lut-select="true"
+                value={lut?.src ?? ""}
+                onChange={(e) => {
+                  const src = e.target.value;
+                  applyLut(src || null, src && lut?.src === src ? lut.intensity : 1);
+                }}
+                className="bg-transparent font-mono text-[10px] text-panel-text-3 outline-none"
+              >
+                <option value="">None</option>
+                {lutAssets.map((asset) => (
+                  <option key={asset} value={asset}>
+                    {asset.split("/").pop() ?? asset}
+                  </option>
+                ))}
+              </select>
+              <button
+                type="button"
+                disabled={!onImportAssets}
+                onClick={() => lutInputRef.current?.click()}
+                title="Import .cube LUT"
+                className="flex-shrink-0 text-panel-text-4 hover:text-panel-text-1 disabled:cursor-not-allowed disabled:opacity-40"
+              >
+                <Plus size={12} />
+              </button>
+              <input
+                ref={lutInputRef}
+                type="file"
+                accept=".cube"
+                className="hidden"
+                onChange={(e) => {
+                  void importLuts(e.currentTarget.files);
+                  e.currentTarget.value = "";
+                }}
+              />
+            </div>
+            {lut && (
+              <FlatSlider
+                label="LUT strength"
+                value={Math.round((lut.intensity ?? 1) * 100)}
+                min={0}
+                max={100}
+                tier={lut.intensity === 1 ? "default" : "explicitCustom"}
+                displayValue={`${Math.round((lut.intensity ?? 1) * 100)}%`}
+                onCommit={(v) => applyLut(lut.src, v / 100)}
+                onReset={() => applyLut(lut.src, 1)}
+              />
+            )}
+          </div>
+        )}
+      </div>
+    </div>
+  );
+}