From 1f434c952c2d502157282bbed95861aec10085b3 Mon Sep 17 00:00:00 2001
From: karishmas6 <carishmashukla28@gmail.com>
Date: Fri, 14 Jun 2024 21:47:42 +0530
Subject: [PATCH] feat: browser window

---
 src/components/organisms/BrowserWindow.tsx | 106 +++++++++++++++++++++
 1 file changed, 106 insertions(+)
 create mode 100644 src/components/organisms/BrowserWindow.tsx

diff --git a/src/components/organisms/BrowserWindow.tsx b/src/components/organisms/BrowserWindow.tsx
new file mode 100644
index 00000000..5a807794
--- /dev/null
+++ b/src/components/organisms/BrowserWindow.tsx
@@ -0,0 +1,106 @@
+import React, { useCallback, useEffect, useState } from 'react';
+import { useSocketStore } from '../../context/socket';
+import Canvas from "../atoms/canvas";
+import { useBrowserDimensionsStore } from "../../context/browserDimensions";
+import { Highlighter } from "../atoms/Highlighter";
+
+export const BrowserWindow = () => {
+
+    const [canvasRef, setCanvasReference] = useState<React.RefObject<HTMLCanvasElement> | undefined>(undefined);
+    const [screenShot, setScreenShot] = useState<string>("");
+    const [highlighterData, setHighlighterData] = useState<{rect: DOMRect, selector: string} | null>(null);
+
+    const { socket } = useSocketStore();
+    const { width, height } = useBrowserDimensionsStore();
+
+    console.log('Use browser dimensions:', width, height)
+
+    const onMouseMove = (e: MouseEvent) =>{
+        if (canvasRef && canvasRef.current && highlighterData) {
+            const canvasRect = canvasRef.current.getBoundingClientRect();
+            // mousemove outside the browser window
+            if (
+              e.pageX < canvasRect.left
+              || e.pageX > canvasRect.right
+              || e.pageY < canvasRect.top
+              || e.pageY > canvasRect.bottom
+            ){
+                setHighlighterData(null);
+            }
+        }
+    };
+
+    const screencastHandler = useCallback((data: string) => {
+        setScreenShot(data);
+    }, [screenShot]);
+
+    useEffect(() =>  {
+        if (socket) {
+            socket.on("screencast", screencastHandler);
+        }
+        if (canvasRef?.current) {
+            drawImage(screenShot, canvasRef.current);
+        } else {
+            console.log('Canvas is not initialized');
+        }
+        return () => {
+            socket?.off("screencast", screencastHandler);
+        }
+
+    }, [screenShot, canvasRef, socket, screencastHandler]);
+
+
+    const highlighterHandler = useCallback((data: {rect: DOMRect, selector: string}) => {
+        setHighlighterData(data);
+        console.log('Highlighter Rect via socket:', data.rect)
+    }, [highlighterData])
+
+    useEffect(() =>  {
+        document.addEventListener('mousemove', onMouseMove, false);
+        if (socket) {
+            socket.on("highlighter", highlighterHandler);
+        }
+        //cleaning function
+        return () => {
+            document.removeEventListener('mousemove', onMouseMove);
+            socket?.off("highlighter", highlighterHandler);
+        };
+    }, [socket, onMouseMove]);
+
+    return (
+      <>
+          {(highlighterData?.rect != null && highlighterData?.rect.top != null) && canvasRef?.current ?
+           < Highlighter
+              unmodifiedRect={highlighterData?.rect}
+              displayedSelector={highlighterData?.selector}
+              width={width}
+              height={height}
+              canvasRect={canvasRef.current.getBoundingClientRect()}
+            />
+            : null }
+        <Canvas
+            onCreateRef={setCanvasReference}
+            width={width}
+            height={height}
+        />
+      </>
+    );
+};
+
+const drawImage = (image: string, canvas: HTMLCanvasElement) :void => {
+
+    const ctx = canvas.getContext('2d');
+
+    const img = new Image();
+
+    img.src = image;
+    img.onload = () => {
+        URL.revokeObjectURL(img.src);
+        //ctx?.clearRect(0, 0, canvas?.width || 0, VIEWPORT_H || 0);
+        // ctx?.drawImage(img, 0, 0, canvas.width , canvas.height);
+        ctx?.drawImage(img, 0, 0, 1280, 720); // Explicitly draw image at 1280 x 720
+        console.log('Image drawn on canvas:', img.width, img.height);
+        console.log('Image drawn on canvas:', canvas.width, canvas.height);
+    };
+
+};