feat: scenes button to timeline toolbar

apps/web/src/components/editor/timeline/timeline-toolbar.tsx

@@ -25,7 +25,14 @@ import {
   ArrowRightToLine,
   SplitSquareHorizontal,
   Scissors,
+  LayersIcon,
 } from "lucide-react";
+import {
+  SplitButton,
+  SplitButtonLeft,
+  SplitButtonRight,
+  SplitButtonSeparator,
+} from "@/components/ui/split-button";
 import { Slider } from "@/components/ui/slider";
 import { DEFAULT_FPS } from "@/stores/project-store";
 import { formatTimeCode } from "@/lib/time";
@@ -192,16 +199,12 @@ export function TimelineToolbar({
 
   const currentBookmarked = isBookmarked(currentTime);
   return (
-    <div className=" flex items-center justify-between px-2 py-1 border-b">
-      <div className="flex items-center gap-1 w-full">
+    <div className="flex items-center justify-between px-2 py-1 border-b h-10">
+      <div className="flex items-center gap-1">
         <TooltipProvider delayDuration={500}>
           <Tooltip>
             <TooltipTrigger asChild>
-              <Button
-                variant="text"
-                size="icon"
-                onClick={toggle}
-              >
+              <Button variant="text" size="icon" onClick={toggle}>
                 {isPlaying ? (
                   <Pause className="h-4 w-4" />
                 ) : (
@@ -215,11 +218,7 @@ export function TimelineToolbar({
           </Tooltip>
           <Tooltip>
             <TooltipTrigger asChild>
-              <Button
-                variant="text"
-                size="icon"
-                onClick={() => seek(0)}
-              >
+              <Button variant="text" size="icon" onClick={() => seek(0)}>
                 <SkipBack className="h-4 w-4" />
               </Button>
             </TooltipTrigger>
@@ -356,6 +355,15 @@ export function TimelineToolbar({
           </Tooltip>
         </TooltipProvider>
       </div>
+      <div>
+        <SplitButton>
+          <SplitButtonLeft>Main scene</SplitButtonLeft>
+          <SplitButtonSeparator />
+          <SplitButtonRight onClick={() => {}}>
+            <LayersIcon />
+          </SplitButtonRight>
+        </SplitButton>
+      </div>
       <div className="flex items-center gap-1">
         <TooltipProvider delayDuration={500}>
           <Tooltip>

apps/web/src/components/ui/split-button.tsx

@@ -0,0 +1,90 @@
+import { Button, ButtonProps } from "@/components/ui/button";
+import { Separator } from "@/components/ui/separator";
+import { ReactNode, forwardRef } from "react";
+import { cn } from "@/lib/utils";
+
+interface SplitButtonProps {
+  children: ReactNode;
+  className?: string;
+}
+
+interface SplitButtonSideProps extends Omit<ButtonProps, "variant" | "size"> {
+  children: ReactNode;
+}
+
+const SplitButton = forwardRef<HTMLDivElement, SplitButtonProps>(
+  ({ children, className, ...props }, ref) => {
+    return (
+      <div
+        ref={ref}
+        className={cn(
+          "inline-flex rounded-full h-7 border border-input bg-panel-accent overflow-hidden",
+          className
+        )}
+        {...props}
+      >
+        {children}
+      </div>
+    );
+  }
+);
+SplitButton.displayName = "SplitButton";
+
+const SplitButtonSide = forwardRef<
+  HTMLButtonElement,
+  SplitButtonSideProps & { paddingClass: string }
+>(({ children, className, paddingClass, onClick, ...props }, ref) => {
+  return (
+    <Button
+      ref={ref}
+      variant="text"
+      className={cn(
+        "h-full rounded-none bg-panel-accent !opacity-100 border-0 gap-0 font-normal transition-colors",
+        onClick
+          ? "hover:bg-foreground/10 hover:opacity-100 cursor-pointer"
+          : "cursor-default select-text",
+        paddingClass,
+        className
+      )}
+      onClick={onClick}
+      {...props}
+    >
+      {typeof children === "string" ? (
+        <span className="font-normal cursor-text">{children}</span>
+      ) : (
+        children
+      )}
+    </Button>
+  );
+});
+SplitButtonSide.displayName = "SplitButtonSide";
+
+const SplitButtonLeft = forwardRef<HTMLButtonElement, SplitButtonSideProps>(
+  ({ ...props }, ref) => {
+    return <SplitButtonSide ref={ref} paddingClass="pl-3 pr-2" {...props} />;
+  }
+);
+SplitButtonLeft.displayName = "SplitButtonLeft";
+
+const SplitButtonRight = forwardRef<HTMLButtonElement, SplitButtonSideProps>(
+  ({ ...props }, ref) => {
+    return <SplitButtonSide ref={ref} paddingClass="pl-2 pr-3" {...props} />;
+  }
+);
+SplitButtonRight.displayName = "SplitButtonRight";
+
+const SplitButtonSeparator = forwardRef<HTMLDivElement, { className?: string }>(
+  ({ className, ...props }, ref) => {
+    return (
+      <Separator
+        ref={ref}
+        orientation="vertical"
+        className={cn("h-full bg-foreground/15", className)}
+        {...props}
+      />
+    );
+  }
+);
+SplitButtonSeparator.displayName = "SplitButtonSeparator";
+
+export { SplitButton, SplitButtonLeft, SplitButtonRight, SplitButtonSeparator };