ok

src/App.css

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+.App {
+  text-align: center;
+}
+
+.App-logo {
+  height: 40vmin;
+  pointer-events: none;
+}
+
+@media (prefers-reduced-motion: no-preference) {
+  .App-logo {
+    animation: App-logo-spin infinite 20s linear;
+  }
+}
+
+.App-header {
+  background-color: #282c34;
+  min-height: 100vh;
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  justify-content: center;
+  font-size: calc(10px + 2vmin);
+  color: white;
+}
+
+.App-link {
+  color: #61dafb;
+}
+
+@keyframes App-logo-spin {
+  from {
+    transform: rotate(0deg);
+  }
+  to {
+    transform: rotate(360deg);
+  }
+}

src/App.js

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+import logo from "./logo.svg";
+import "./App.css";
+import CameraKtp from "./KTPScanner";
+
+function App() {
+  return (
+    <div className="App">
+      <CameraKtp />
+    </div>
+  );
+}
+
+export default App;

src/App.test.js

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+import { render, screen } from '@testing-library/react';
+import App from './App';
+
+test('renders learn react link', () => {
+  render(<App />);
+  const linkElement = screen.getByText(/learn react/i);
+  expect(linkElement).toBeInTheDocument();
+});

src/KTPScanner.css

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+.overlay-box {
+  position: absolute;
+  border: 3px dashed red;
+  width: 80%; /* atau sesuaikan */
+  aspect-ratio: 85.6 / 53.98;
+  top: 50%;
+  left: 50%;
+  transform: translate(-50%, -50%);
+  box-sizing: border-box;
+  pointer-events: none;
+}

src/KTPScanner.js

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+import React, { useEffect, useRef, useState } from "react";
+
+const STORAGE_KEY = "camera_canvas_gallery";
+
+const CameraCanvas = () => {
+  const videoRef = useRef(null);
+  const canvasRef = useRef(null); // visible canvas
+  const hiddenCanvasRef = useRef(null); // hidden canvas for capture
+  const [capturedImage, setCapturedImage] = useState(null);
+  const [galleryImages, setGalleryImages] = useState([]);
+  const [isFreeze, setIsFreeze] = useState(false);
+  const freezeFrameRef = useRef(null); // menyimpan freeze frame imageData
+
+  // Fungsi untuk gambar rounded rectangle
+  const drawRoundedRect = (ctx, x, y, width, height, radius) => {
+    ctx.beginPath();
+    ctx.moveTo(x + radius, y);
+    ctx.lineTo(x + width - radius, y);
+    ctx.quadraticCurveTo(x + width, y, x + width, y + radius);
+    ctx.lineTo(x + width, y + height - radius);
+    ctx.quadraticCurveTo(x + width, y + height, x + width - radius, y + height);
+    ctx.lineTo(x + radius, y + height);
+    ctx.quadraticCurveTo(x, y + height, x, y + height - radius);
+    ctx.lineTo(x, y + radius);
+    ctx.quadraticCurveTo(x, y, x + radius, y);
+    ctx.closePath();
+    ctx.strokeStyle = "red";
+    ctx.lineWidth = 3;
+    ctx.stroke();
+  };
+
+  // Fungsi untuk mewarnai area luar rectangle dengan hitam semi transparan
+  const fillOutsideRect = (ctx, rect, canvasWidth, canvasHeight) => {
+    ctx.save();
+
+    const { x, y, width, height, radius } = rect;
+
+    // Buat path rounded rectangle
+    ctx.beginPath();
+    ctx.moveTo(x + radius, y);
+    ctx.lineTo(x + width - radius, y);
+    ctx.quadraticCurveTo(x + width, y, x + width, y + radius);
+    ctx.lineTo(x + width, y + height - radius);
+    ctx.quadraticCurveTo(x + width, y + height, x + width - radius, y + height);
+    ctx.lineTo(x + radius, y + height);
+    ctx.quadraticCurveTo(x, y + height, x, y + height - radius);
+    ctx.lineTo(x, y + radius);
+    ctx.quadraticCurveTo(x, y, x + radius, y);
+    ctx.closePath();
+
+    // Buat clipping inverse area (area luar rectangle)
+    ctx.rect(0, 0, canvasWidth, canvasHeight);
+
+    // Fill dengan mode 'evenodd' supaya area di luar path rectangle terisi
+    ctx.fillStyle = "rgba(173, 173, 173, 1)"; // hitam semi transparan
+    ctx.fill("evenodd");
+
+    ctx.restore();
+  };
+
+  // Variabel global untuk posisi rectangle dan ukurannya supaya bisa dipakai di shootImage
+  const rectRef = useRef({
+    x: 0,
+    y: 0,
+    width: 0,
+    height: 0,
+    radius: 20,
+  });
+
+  useEffect(() => {
+    // Load gallery dari localStorage saat pertama kali mount
+    const savedGallery = localStorage.getItem(STORAGE_KEY);
+    if (savedGallery) {
+      setGalleryImages(JSON.parse(savedGallery));
+    }
+
+    const getCameraStream = async () => {
+      try {
+        const stream = await navigator.mediaDevices.getUserMedia({
+          video: {
+            facingMode: { ideal: "environment" },
+          },
+          audio: false,
+        });
+
+        if (videoRef.current) {
+          videoRef.current.srcObject = stream;
+
+          videoRef.current.onloadedmetadata = () => {
+            videoRef.current.play();
+
+            const video = videoRef.current;
+            const canvas = canvasRef.current; // visible canvas
+            const hiddenCanvas = hiddenCanvasRef.current; // hidden canvas
+            const ctx = canvas.getContext("2d");
+
+            // Set ukuran canvas sesuai video asli
+            canvas.width = video.videoWidth;
+            canvas.height = video.videoHeight;
+
+            // Style visible canvas supaya scaled sesuai container dan tidak overflow
+            canvas.style.maxWidth = "100%";
+            canvas.style.height = "auto";
+
+            hiddenCanvas.width = video.videoWidth;
+            hiddenCanvas.height = video.videoHeight;
+
+            // Hitung ukuran rectangle KTP
+            const rectWidth = canvas.width * 0.9;
+            const rectHeight = (53.98 / 85.6) * rectWidth; // aspek rasio KTP
+            const rectX = (canvas.width - rectWidth) / 2;
+            const rectY = (canvas.height - rectHeight) / 2;
+
+            rectRef.current = {
+              x: rectX,
+              y: rectY,
+              width: rectWidth,
+              height: rectHeight,
+              radius: 20,
+            };
+
+            const drawToCanvas = () => {
+              if (video.readyState === 4) {
+                ctx.clearRect(0, 0, canvas.width, canvas.height);
+
+                if (isFreeze && freezeFrameRef.current) {
+                  // Tampilkan freeze frame yang sudah disimpan
+                  ctx.putImageData(freezeFrameRef.current, 0, 0);
+
+                  drawRoundedRect(
+                    ctx,
+                    rectRef.current.x,
+                    rectRef.current.y,
+                    rectRef.current.width,
+                    rectRef.current.height,
+                    rectRef.current.radius
+                  );
+
+                  // Overlay area luar rectangle dengan hitam
+                  fillOutsideRect(
+                    ctx,
+                    rectRef.current,
+                    canvas.width,
+                    canvas.height
+                  );
+                } else {
+                  // Render video live + rectangle
+                  ctx.drawImage(video, 0, 0, canvas.width, canvas.height);
+                  drawRoundedRect(
+                    ctx,
+                    rectRef.current.x,
+                    rectRef.current.y,
+                    rectRef.current.width,
+                    rectRef.current.height,
+                    rectRef.current.radius
+                  );
+                }
+              }
+              requestAnimationFrame(drawToCanvas);
+            };
+
+            drawToCanvas();
+          };
+        }
+      } catch (err) {
+        console.error("Gagal mendapatkan kamera:", err);
+      }
+    };
+
+    getCameraStream();
+  }, [isFreeze]);
+
+  useEffect(() => {
+    const canvas = canvasRef.current;
+    const ctx = canvas.getContext("2d");
+    const video = videoRef.current;
+
+    // Hitung posisi rectangle sekali
+    const rectWidth = canvas.width * 0.9;
+    const rectHeight = (53.98 / 85.6) * rectWidth;
+    const rectX = (canvas.width - rectWidth) / 2;
+    const rectY = (canvas.height - rectHeight) / 2;
+
+    rectRef.current = {
+      x: rectX,
+      y: rectY,
+      width: rectWidth,
+      height: rectHeight,
+      radius: 20,
+    };
+
+    let animationFrameId;
+
+    const drawToCanvas = () => {
+      if (video.readyState === 4) {
+        ctx.clearRect(0, 0, canvas.width, canvas.height);
+        if (isFreeze && freezeFrameRef.current) {
+          ctx.putImageData(freezeFrameRef.current, 0, 0);
+
+          drawRoundedRect(
+            ctx,
+            rectRef.current.x,
+            rectRef.current.y,
+            rectRef.current.width,
+            rectRef.current.height,
+            rectRef.current.radius
+          );
+
+          // Overlay area luar rectangle dengan hitam
+          fillOutsideRect(ctx, rectRef.current, canvas.width, canvas.height);
+        } else {
+          ctx.drawImage(video, 0, 0, canvas.width, canvas.height);
+          drawRoundedRect(
+            ctx,
+            rectRef.current.x,
+            rectRef.current.y,
+            rectRef.current.width,
+            rectRef.current.height,
+            rectRef.current.radius
+          );
+        }
+      }
+      animationFrameId = requestAnimationFrame(drawToCanvas);
+    };
+
+    drawToCanvas();
+
+    return () => cancelAnimationFrame(animationFrameId);
+  }, [isFreeze]);
+
+  // Fungsi untuk capture gambar area rectangle dan simpan ke localStorage + freeze effect
+  const shootImage = () => {
+    const video = videoRef.current;
+    const { x, y, width, height } = rectRef.current;
+    const hiddenCanvas = hiddenCanvasRef.current;
+    const hiddenCtx = hiddenCanvas.getContext("2d");
+    const visibleCtx = canvasRef.current.getContext("2d");
+
+    // Ambil image data canvas visible untuk freeze frame
+    freezeFrameRef.current = visibleCtx.getImageData(
+      0,
+      0,
+      canvasRef.current.width,
+      canvasRef.current.height
+    );
+
+    // Aktifkan freeze frame
+    setIsFreeze(true);
+
+    // Tangkap gambar video ke hidden canvas
+    hiddenCtx.drawImage(video, 0, 0, hiddenCanvas.width, hiddenCanvas.height);
+
+    // Buat canvas crop
+    const cropCanvas = document.createElement("canvas");
+    cropCanvas.width = Math.floor(width);
+    cropCanvas.height = Math.floor(height);
+    const cropCtx = cropCanvas.getContext("2d");
+
+    // Crop area rectangle dari hidden canvas
+    cropCtx.drawImage(
+      hiddenCanvas,
+      Math.floor(x),
+      Math.floor(y),
+      Math.floor(width),
+      Math.floor(height),
+      0,
+      0,
+      Math.floor(width),
+      Math.floor(height)
+    );
+
+    const imageDataUrl = cropCanvas.toDataURL("image/png", 1.0);
+    setCapturedImage(imageDataUrl);
+  };
+
+  // Fungsi hapus gambar dari gallery
+  const removeImage = (index) => {
+    const newGallery = [...galleryImages];
+    newGallery.splice(index, 1);
+    setGalleryImages(newGallery);
+    localStorage.setItem(STORAGE_KEY, JSON.stringify(newGallery));
+  };
+
+  // Rasio KTP
+  const aspectRatio = 53.98 / 85.6;
+
+  return (
+    <div>
+      <video
+        ref={videoRef}
+        autoPlay
+        playsInline
+        muted
+        style={{ display: "none" }}
+      />
+      {/* Canvas visible untuk tampilan */}
+      <canvas
+        ref={canvasRef}
+        style={{ border: "1px solid black", maxWidth: "100%", height: "auto" }}
+      />
+      {/* Canvas hidden untuk capture full res */}
+      <canvas ref={hiddenCanvasRef} style={{ display: "none" }} />
+      {!isFreeze ? (
+        <div style={{ marginTop: 10 }}>
+          <button onClick={shootImage}>Shoot</button>
+        </div>
+      ) : (
+        <div style={{ marginTop: 10 }}>
+          <button onClick={() => setIsFreeze(false)}>Hapus</button>
+          <button
+            onClick={() => {
+              setIsFreeze(false);
+
+              const newImage = {
+                image: capturedImage, // ini base64
+                data: {
+                  createdAt: new Date().toISOString(), // atau data lain yang kamu butuh
+                  // kamu bisa tambahkan info lain di sini, misalnya lokasi, metadata, dll.
+                },
+              };
+
+              const newGallery = [newImage, ...galleryImages];
+              setGalleryImages(newGallery);
+              localStorage.setItem(STORAGE_KEY, JSON.stringify(newGallery));
+            }}
+          >
+            Simpan
+          </button>
+        </div>
+      )}
+      {/* Gallery */}
+      <div style={{ marginTop: 20 }}>
+        <h3>Gallery</h3>
+
+        <div
+          style={{
+            display: "flex",
+            width: "100%",
+            gap: 10,
+          }}
+        >
+          {/* Galeri: 2 kolom tetap */}
+          <div
+            style={{
+              display: "grid",
+              gridTemplateColumns: "repeat(2, 120px)", // 2 kolom tetap
+              gap: 10,
+            }}
+          >
+            {galleryImages.length === 0 && (
+              <p style={{ gridColumn: "1 / -1" }}>
+                Belum ada gambar tersimpan.
+              </p>
+            )}
+            {galleryImages.map((item, index) => (
+              <div
+                key={index}
+                style={{
+                  position: "relative",
+                  width: 120,
+                  height: 120 * aspectRatio,
+                  overflow: "visible",
+                  border: "1px solid #ccc",
+                  borderRadius: 8,
+                }}
+              >
+                <button
+                  onClick={() => removeImage(index)}
+                  style={{
+                    position: "absolute",
+                    top: "-13px",
+                    right: "-13px",
+                    background: "rgba(255, 0, 0, 1)",
+                    border: "none",
+                    color: "white",
+                    borderRadius: "50%",
+                    width: 26,
+                    height: 26,
+                    cursor: "pointer",
+                    fontWeight: "bold",
+                    lineHeight: "18px",
+                    textAlign: "center",
+                    padding: 0,
+                  }}
+                  title={`Hapus gambar ${index + 1}`}
+                  aria-label={`Hapus gambar ${index + 1}`}
+                >
+                  ×
+                </button>
+                <img
+                  src={item.image}
+                  alt={`Gallery ${index + 1}`}
+                  style={{
+                    width: "100%",
+                    height: "100%",
+                    objectFit: "cover",
+                    borderRadius: 8,
+                  }}
+                />
+              </div>
+            ))}
+          </div>
+
+          {/* Tombol Next responsif mengisi kekosongan width */}
+          {galleryImages.length > 0 && (
+            <button
+              style={{
+                flexGrow: 1,
+                background: "#007bff",
+                color: "white",
+                border: "none",
+                borderRadius: 8,
+                fontSize: 24,
+                cursor: "pointer",
+              }}
+              onClick={() => {
+                // Aksi tombol >
+              }}
+            >
+              &gt;
+            </button>
+          )}
+        </div>
+      </div>
+    </div>
+  );
+};
+
+export default CameraCanvas;

src/index.css

@@ -0,0 +1,13 @@
+body {
+  margin: 0;
+  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
+    'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue',
+    sans-serif;
+  -webkit-font-smoothing: antialiased;
+  -moz-osx-font-smoothing: grayscale;
+}
+
+code {
+  font-family: source-code-pro, Menlo, Monaco, Consolas, 'Courier New',
+    monospace;
+}

src/index.js

@@ -0,0 +1,17 @@
+import React from 'react';
+import ReactDOM from 'react-dom/client';
+import './index.css';
+import App from './App';
+import reportWebVitals from './reportWebVitals';
+
+const root = ReactDOM.createRoot(document.getElementById('root'));
+root.render(
+  <React.StrictMode>
+    <App />
+  </React.StrictMode>
+);
+
+// If you want to start measuring performance in your app, pass a function
+// to log results (for example: reportWebVitals(console.log))
+// or send to an analytics endpoint. Learn more: https://bit.ly/CRA-vitals
+reportWebVitals();

src/logo.svg

@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 841.9 595.3"><g fill="#61DAFB"><path d="M666.3 296.5c0-32.5-40.7-63.3-103.1-82.4 14.4-63.6 8-114.2-20.2-130.4-6.5-3.8-14.1-5.6-22.4-5.6v22.3c4.6 0 8.3.9 11.4 2.6 13.6 7.8 19.5 37.5 14.9 75.7-1.1 9.4-2.9 19.3-5.1 29.4-19.6-4.8-41-8.5-63.5-10.9-13.5-18.5-27.5-35.3-41.6-50 32.6-30.3 63.2-46.9 84-46.9V78c-27.5 0-63.5 19.6-99.9 53.6-36.4-33.8-72.4-53.2-99.9-53.2v22.3c20.7 0 51.4 16.5 84 46.6-14 14.7-28 31.4-41.3 49.9-22.6 2.4-44 6.1-63.6 11-2.3-10-4-19.7-5.2-29-4.7-38.2 1.1-67.9 14.6-75.8 3-1.8 6.9-2.6 11.5-2.6V78.5c-8.4 0-16 1.8-22.6 5.6-28.1 16.2-34.4 66.7-19.9 130.1-62.2 19.2-102.7 49.9-102.7 82.3 0 32.5 40.7 63.3 103.1 82.4-14.4 63.6-8 114.2 20.2 130.4 6.5 3.8 14.1 5.6 22.5 5.6 27.5 0 63.5-19.6 99.9-53.6 36.4 33.8 72.4 53.2 99.9 53.2 8.4 0 16-1.8 22.6-5.6 28.1-16.2 34.4-66.7 19.9-130.1 62-19.1 102.5-49.9 102.5-82.3zm-130.2-66.7c-3.7 12.9-8.3 26.2-13.5 39.5-4.1-8-8.4-16-13.1-24-4.6-8-9.5-15.8-14.4-23.4 14.2 2.1 27.9 4.7 41 7.9zm-45.8 106.5c-7.8 13.5-15.8 26.3-24.1 38.2-14.9 1.3-30 2-45.2 2-15.1 0-30.2-.7-45-1.9-8.3-11.9-16.4-24.6-24.2-38-7.6-13.1-14.5-26.4-20.8-39.8 6.2-13.4 13.2-26.8 20.7-39.9 7.8-13.5 15.8-26.3 24.1-38.2 14.9-1.3 30-2 45.2-2 15.1 0 30.2.7 45 1.9 8.3 11.9 16.4 24.6 24.2 38 7.6 13.1 14.5 26.4 20.8 39.8-6.3 13.4-13.2 26.8-20.7 39.9zm32.3-13c5.4 13.4 10 26.8 13.8 39.8-13.1 3.2-26.9 5.9-41.2 8 4.9-7.7 9.8-15.6 14.4-23.7 4.6-8 8.9-16.1 13-24.1zM421.2 430c-9.3-9.6-18.6-20.3-27.8-32 9 .4 18.2.7 27.5.7 9.4 0 18.7-.2 27.8-.7-9 11.7-18.3 22.4-27.5 32zm-74.4-58.9c-14.2-2.1-27.9-4.7-41-7.9 3.7-12.9 8.3-26.2 13.5-39.5 4.1 8 8.4 16 13.1 24 4.7 8 9.5 15.8 14.4 23.4zM420.7 163c9.3 9.6 18.6 20.3 27.8 32-9-.4-18.2-.7-27.5-.7-9.4 0-18.7.2-27.8.7 9-11.7 18.3-22.4 27.5-32zm-74 58.9c-4.9 7.7-9.8 15.6-14.4 23.7-4.6 8-8.9 16-13 24-5.4-13.4-10-26.8-13.8-39.8 13.1-3.1 26.9-5.8 41.2-7.9zm-90.5 125.2c-35.4-15.1-58.3-34.9-58.3-50.6 0-15.7 22.9-35.6 58.3-50.6 8.6-3.7 18-7 27.7-10.1 5.7 19.6 13.2 40 22.5 60.9-9.2 20.8-16.6 41.1-22.2 60.6-9.9-3.1-19.3-6.5-28-10.2zM310 490c-13.6-7.8-19.5-37.5-14.9-75.7 1.1-9.4 2.9-19.3 5.1-29.4 19.6 4.8 41 8.5 63.5 10.9 13.5 18.5 27.5 35.3 41.6 50-32.6 30.3-63.2 46.9-84 46.9-4.5-.1-8.3-1-11.3-2.7zm237.2-76.2c4.7 38.2-1.1 67.9-14.6 75.8-3 1.8-6.9 2.6-11.5 2.6-20.7 0-51.4-16.5-84-46.6 14-14.7 28-31.4 41.3-49.9 22.6-2.4 44-6.1 63.6-11 2.3 10.1 4.1 19.8 5.2 29.1zm38.5-66.7c-8.6 3.7-18 7-27.7 10.1-5.7-19.6-13.2-40-22.5-60.9 9.2-20.8 16.6-41.1 22.2-60.6 9.9 3.1 19.3 6.5 28.1 10.2 35.4 15.1 58.3 34.9 58.3 50.6-.1 15.7-23 35.6-58.4 50.6zM320.8 78.4z"/><circle cx="420.9" cy="296.5" r="45.7"/><path d="M520.5 78.1z"/></g></svg>

src/reportWebVitals.js

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+const reportWebVitals = onPerfEntry => {
+  if (onPerfEntry && onPerfEntry instanceof Function) {
+    import('web-vitals').then(({ getCLS, getFID, getFCP, getLCP, getTTFB }) => {
+      getCLS(onPerfEntry);
+      getFID(onPerfEntry);
+      getFCP(onPerfEntry);
+      getLCP(onPerfEntry);
+      getTTFB(onPerfEntry);
+    });
+  }
+};
+
+export default reportWebVitals;

src/setupTests.js

@@ -0,0 +1,5 @@
+// jest-dom adds custom jest matchers for asserting on DOM nodes.
+// allows you to do things like:
+// expect(element).toHaveTextContent(/react/i)
+// learn more: https://github.com/testing-library/jest-dom
+import '@testing-library/jest-dom';