From d7caf47498723c51e53bdab465d08828d7cc1846 Mon Sep 17 00:00:00 2001
From: "pramod.mahajan" <pramod.mahajan@marcoaiot.com>
Date: Sat, 25 Oct 2025 10:45:52 +0530
Subject: [PATCH] added zoom functionality inside prevw documents

---
 src/components/Expenses/PreviewDocument.jsx | 132 +++++++++++++++-----
 1 file changed, 103 insertions(+), 29 deletions(-)

diff --git a/src/components/Expenses/PreviewDocument.jsx b/src/components/Expenses/PreviewDocument.jsx
index c9000059..dd756893 100644
--- a/src/components/Expenses/PreviewDocument.jsx
+++ b/src/components/Expenses/PreviewDocument.jsx
@@ -1,54 +1,128 @@
-import { useState } from "react";
+import { useState, useRef } from "react";
 
 const PreviewDocument = ({ imageUrl }) => {
   const [loading, setLoading] = useState(true);
   const [rotation, setRotation] = useState(0);
+  const [zoom, setZoom] = useState(1);
+  const [position, setPosition] = useState({ x: 0, y: 0 });
+  const [isDragging, setIsDragging] = useState(false);
+  const [startPos, setStartPos] = useState({ x: 0, y: 0 });
+  const containerRef = useRef(null);
+
+  //  Zoom handlers
+  const handleZoomIn = () => setZoom((prev) => Math.min(prev + 0.2, 3));
+  const handleZoomOut = () => setZoom((prev) => Math.max(prev - 0.2, 0.5));
+
+  //  Mouse wheel zoom
+  const handleWheel = (e) => {
+    e.preventDefault();
+    const delta = e.deltaY > 0 ? -0.1 : 0.1;
+    setZoom((prev) => Math.min(Math.max(prev + delta, 0.5), 3));
+  };
+
+  const handleMouseDown = (e) => {
+    if (zoom <= 1) return;
+    setIsDragging(true);
+    setStartPos({
+      x: e.clientX - position.x,
+      y: e.clientY - position.y,
+    });
+  };
+
+  const handleMouseMove = (e) => {
+    if (!isDragging) return;
+    setPosition({
+      x: e.clientX - startPos.x,
+      y: e.clientY - startPos.y,
+    });
+  };
+
+  const handleMouseUp = () => setIsDragging(false);
+  const handleMouseLeave = () => setIsDragging(false);
+
+  const handleReset = () => {
+    setRotation(0);
+    setZoom(1);
+    setPosition({ x: 0, y: 0 });
+  };
 
   return (
-   <>
-    <div className="d-flex justify-content-start">
+    <>
+      <div className="d-flex justify-content-start align-items-center gap-3 mb-2 px-3 py-2 px-md-0 py-md-0">
         <i
-          className="bx bx-rotate-right cursor-pointer"
+          className="bx bx-rotate-right fs-4 cursor-pointer"
+          title="Rotate Right"
           onClick={() => setRotation((prev) => prev + 90)}
         ></i>
+        <i
+          className="bx bx-zoom-in fs-4 cursor-pointer"
+          title="Zoom In"
+          onClick={handleZoomIn}
+        ></i>
+        <i
+          className="bx bx-zoom-out fs-4 cursor-pointer"
+          title="Zoom Out"
+          onClick={handleZoomOut}
+        ></i>
+        <i
+          className="bx bx-reset fs-4 cursor-pointer"
+          title="Reset"
+          onClick={handleReset}
+        ></i>
       </div>
-    <div
-      className="d-flex flex-column justify-content-center align-items-center"
-      style={{ minHeight: "60%" }}
-    >
-      
-      {loading && (
-        <div className="text-secondary text-center mb-2">Loading...</div>
-      )}
 
-      <div className="mb-3 d-flex justify-content-center align-items-center">
+      <div
+        ref={containerRef}
+        onWheel={handleWheel}
+        onMouseDown={handleMouseDown}
+        onMouseMove={handleMouseMove}
+        onMouseUp={handleMouseUp}
+        onMouseLeave={handleMouseLeave}
+        className="d-flex justify-content-center align-items-center overflow-hidden border rounded"
+        style={{
+          width: "100%",
+          height: "80vh",
+          background: "#f8f9fa",
+          cursor: zoom > 1 ? (isDragging ? "grabbing" : "grab") : "default",
+          userSelect: "none",
+          position: "relative",
+        }}
+      >
+        {loading && (
+          <div className="text-secondary text-center position-absolute">
+            Loading...
+          </div>
+        )}
         <img
           src={imageUrl}
-          alt="Full View"
-          className="img-fluid"
-          style={{
-            maxHeight: "80vh",
-            objectFit: "contain",
-            display: loading ? "none" : "block",
-            transform: `rotate(${rotation}deg)`,
-            transition: "transform 0.3s ease",
-          }}
+          alt="Preview"
           onLoad={() => setLoading(false)}
+          style={{
+            transform: `translate(${position.x}px, ${position.y}px) rotate(${rotation}deg) scale(${zoom})`,
+            transition: isDragging ? "none" : "transform 0.3s ease",
+            objectFit: "contain",
+            maxWidth: "100%",
+            maxHeight: "100%",
+            display: loading ? "none" : "block",
+            pointerEvents: "none",
+          }}
         />
       </div>
 
-      <div className="d-flex justify-content-center gap-2">
+      {/* <div className="d-flex justify-content-center gap-2 mt-2">
         <button
           className="btn btn-sm btn-outline-secondary"
-          onClick={() => setRotation(0)}
-          title="Reset Rotation"
+          onClick={handleReset}
+          title="Reset View"
         >
-          <i className="bx bx-reset"></i> Reset
+          <i className="bx bx-reset"></i> Reset View
         </button>
-      </div>
-    </div>
-   </>
+      </div> */}
+    </>
   );
 };
 
 export default PreviewDocument;
+
+
+