Added zoom to Bracket view

frontend/src/components/Bracket/BracketView.tsx

@@ -1,6 +1,7 @@
 // frontend/src/components/Bracket/BracketView.tsx
 
 import React, { useEffect, useRef, useState } from 'react';
+import { ZoomIn, ZoomOut } from 'lucide-react';
 import { type MatchData } from '../../types';
 import Podium from "../Tournament/Podium";
 import MatchCard from "./MatchCard";
@@ -13,10 +14,19 @@ interface BracketViewProps {
 export default function BracketView({ matches, onMatchClick }: BracketViewProps) {
     const containerRef = useRef<HTMLDivElement>(null);
     const [lines, setLines] = useState<React.ReactElement[]>([]);
+    const [zoom, setZoom] = useState<number>(1);
+    const [contentSize, setContentSize] = useState({ width: 0, height: 0 });
 
     useEffect(() => {
         const draw = () => {
             if (!containerRef.current) return;
+
+            // Measure the unscaled bracket size to fix scrollbars later
+            setContentSize({
+                width: containerRef.current.scrollWidth,
+                height: containerRef.current.scrollHeight
+            });
+
             const container = containerRef.current.getBoundingClientRect();
             const newLines: React.ReactElement[] = [];
 
@@ -26,9 +36,13 @@ export default function BracketView({ matches, onMatchClick }: BracketViewProps)
                     const eEl = document.getElementById(`match-${m.winner_next_match_id}`);
                     if (sEl && eEl) {
                         const r1 = sEl.getBoundingClientRect(), r2 = eEl.getBoundingClientRect();
-                        const sx = r1.right - container.left, sy = r1.top + r1.height / 2 - container.top;
+
-                        const ex = r2.left - container.left, ey = r2.top + r2.height / 2 - container.top;
+                        const sx = (r1.right - container.left) / zoom;
+                        const sy = (r1.top + r1.height / 2 - container.top) / zoom;
+                        const ex = (r2.left - container.left) / zoom;
+                        const ey = (r2.top + r2.height / 2 - container.top) / zoom;
                         const c1 = sx + (ex - sx) / 2;
+
                         newLines.push(
                             <path key={`w-${m.id}`} d={`M ${sx} ${sy} C ${c1} ${sy}, ${c1} ${ey}, ${ex} ${ey}`} className="stroke-zinc-400/70 dark:stroke-zinc-700/70 print:stroke-zinc-400! fill-none stroke-[2px]" />
                         );
@@ -42,9 +56,13 @@ export default function BracketView({ matches, onMatchClick }: BracketViewProps)
                         const eEl = document.getElementById(`match-${targetMatch.id}`);
                         if (sEl && eEl) {
                             const r1 = sEl.getBoundingClientRect(), r2 = eEl.getBoundingClientRect();
-                            const sx = r1.right - container.left, sy = r1.top + r1.height / 2 - container.top;
+
-                            const ex = r2.left - container.left, ey = r2.top + r2.height / 2 - container.top;
+                            const sx = (r1.right - container.left) / zoom;
+                            const sy = (r1.top + r1.height / 2 - container.top) / zoom;
+                            const ex = (r2.left - container.left) / zoom;
+                            const ey = (r2.top + r2.height / 2 - container.top) / zoom;
                             const c1 = sx + (ex - sx) / 2;
+
                             newLines.push(
                                 <path key={`l-${m.id}`} strokeDasharray="6 6" d={`M ${sx} ${sy} C ${c1} ${sy}, ${c1} ${ey}, ${ex} ${ey}`} className="stroke-zinc-300 dark:stroke-zinc-700 print:stroke-zinc-400! fill-none stroke-[1.5px]" />
                             );
@@ -55,7 +73,7 @@ export default function BracketView({ matches, onMatchClick }: BracketViewProps)
             setLines(newLines);
         };
 
-        const t = setTimeout(draw, 100);
+        const t = setTimeout(draw, 50);
         window.addEventListener('resize', draw);
 
         const handlePrint = () => { draw(); setTimeout(draw, 100); };
@@ -71,7 +89,7 @@ export default function BracketView({ matches, onMatchClick }: BracketViewProps)
             window.removeEventListener('beforeprint', handlePrint);
             window.removeEventListener('afterprint', draw);
         };
-    }, [matches]);
+    }, [matches, zoom]);
 
     const renderRound = (list: MatchData[]) => {
         const rounds: Record<number, MatchData[]> = {};
@@ -109,7 +127,29 @@ export default function BracketView({ matches, onMatchClick }: BracketViewProps)
     }
 
     return (
-        <div className="transition-colors w-full h-full overflow-auto print:overflow-visible print:h-auto print:w-auto bg-zinc-50 dark:bg-zinc-950 bg-[radial-gradient(var(--color-zinc-300)_1px,transparent_1px)] dark:bg-[radial-gradient(var(--color-zinc-800)_1px,transparent_1px)] bg-size-[20px_20px] print:bg-white! print:bg-none!">
+        <div className="relative w-full h-full flex flex-col overflow-hidden bg-zinc-50 dark:bg-zinc-950 print:bg-white!">
+
+            {/* FLOATING ZOOM CONTROLS (Moved to top-6 to completely avoid theme button) */}
+            <div className="absolute top-6 right-6 flex flex-col gap-3 z-50 print:hidden">
+                <button
+                    onClick={() => setZoom(z => Math.min(1, z + 0.1))}
+                    disabled={zoom >= 1}
+                    className="p-3 bg-white dark:bg-zinc-800 rounded-full shadow-lg shadow-black/5 border border-zinc-200 dark:border-zinc-700 text-zinc-600 dark:text-zinc-300 disabled:opacity-30 hover:text-orange-500 hover:border-orange-500 transition active:scale-90"
+                    title="Zoom In"
+                >
+                    <ZoomIn size={20} strokeWidth={2.5} />
+                </button>
+                <button
+                    onClick={() => setZoom(z => Math.max(0.3, z - 0.1))}
+                    disabled={zoom <= 0.3}
+                    className="p-3 bg-white dark:bg-zinc-800 rounded-full shadow-lg shadow-black/5 border border-zinc-200 dark:border-zinc-700 text-zinc-600 dark:text-zinc-300 disabled:opacity-30 hover:text-orange-500 hover:border-orange-500 transition active:scale-90"
+                    title="Zoom Out"
+                >
+                    <ZoomOut size={20} strokeWidth={2.5} />
+                </button>
+            </div>
+
+            <div className="flex-1 overflow-auto bg-[radial-gradient(var(--color-zinc-300)_1px,transparent_1px)] dark:bg-[radial-gradient(var(--color-zinc-800)_1px,transparent_1px)] bg-size-[20px_20px] print:bg-none!">
                 <style>
                     {`@media print { 
                         @page { size: landscape; margin: 0.5cm; }
@@ -117,7 +157,19 @@ export default function BracketView({ matches, onMatchClick }: BracketViewProps)
                     }`}
                 </style>
 
-            <div ref={containerRef} className="relative min-w-max min-h-full p-12 flex gap-20 items-center">
+                {/* SIZER WRAPPER (Dynamically scales width/height to fix the scrollbar ghost space) */}
+                <div style={{
+                    width: contentSize.width ? `${contentSize.width * zoom}px` : 'max-content',
+                    height: contentSize.height ? `${contentSize.height * zoom}px` : 'max-content'
+                }}>
+                    {/* SCALING WRAPPER */}
+                    <div
+                        className="origin-top-left print:transform-none! w-max h-max"
+                        style={{ transform: `scale(${zoom})` }}
+                    >
+                        {/* Added pt-16 md:pt-20 to ensure absolute titles aren't clipped
+                        */}
+                        <div ref={containerRef} className="relative min-w-max min-h-full pt-16 md:pt-20 px-6 md:px-12 pb-40 md:pb-32 flex gap-12 md:gap-20 items-center">
                             <svg className="absolute inset-0 w-full h-full pointer-events-none z-0 print:overflow-visible">
                                 {lines}
                             </svg>
@@ -150,5 +202,8 @@ export default function BracketView({ matches, onMatchClick }: BracketViewProps)
                             </div>
                         </div>
                     </div>
+                </div>
+            </div>
+        </div>
     );
 }