From 130d729af89ff402d6ed1d2ae998b946bcf38740 Mon Sep 17 00:00:00 2001
From: ZiuChen <457353192@qq.com>
Date: Tue, 20 Sep 2022 00:00:11 +0800
Subject: [PATCH] =?UTF-8?q?feat:=20=E6=B7=BB=E5=8A=A0clipboard-event?=
 =?UTF-8?q?=E4=B8=8D=E5=90=8C=E5=B9=B3=E5=8F=B0=E6=BA=90=E4=BB=A3=E7=A0=81?=
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---
 .../platform/clipboard-event-handler-linux.c  | 38 ++++++++++++++++
 .../clipboard-event-handler-mac.swift         | 24 ++++++++++
 .../platform/clipboard-event-handler-win32.cs | 44 +++++++++++++++++++
 3 files changed, 106 insertions(+)
 create mode 100644 public/node_modules/clipboard-event/platform/clipboard-event-handler-linux.c
 create mode 100644 public/node_modules/clipboard-event/platform/clipboard-event-handler-mac.swift
 create mode 100644 public/node_modules/clipboard-event/platform/clipboard-event-handler-win32.cs

diff --git a/public/node_modules/clipboard-event/platform/clipboard-event-handler-linux.c b/public/node_modules/clipboard-event/platform/clipboard-event-handler-linux.c
new file mode 100644
index 0000000..5ef0b66
--- /dev/null
+++ b/public/node_modules/clipboard-event/platform/clipboard-event-handler-linux.c
@@ -0,0 +1,38 @@
+// https://stackoverflow.com/a/44992967
+// gcc -o xclipwatch xclipwatch.c -lX11 -lXfixes
+
+#include <X11/extensions/Xfixes.h>
+#include<stdio.h>
+#include <assert.h>
+
+void WatchSelection(Display *display, Window window, const char *bufname)
+{
+  int event_base, error_base;
+  XEvent event;
+  Atom bufid = XInternAtom(display, bufname, False);
+
+  assert( XFixesQueryExtension(display, &event_base, &error_base) );
+  XFixesSelectSelectionInput(display, DefaultRootWindow(display), bufid, XFixesSetSelectionOwnerNotifyMask);
+
+  while (True)
+  {
+    XNextEvent(display, &event);
+
+    if (event.type == event_base + XFixesSelectionNotify &&
+        ((XFixesSelectionNotifyEvent*)&event)->selection == bufid)
+    {
+      printf("CLIPBOARD_CHANGE\n");
+      fflush(stdout);
+    }
+  }
+}
+
+int main(){
+  Display *display = XOpenDisplay(NULL);
+  Window window = DefaultRootWindow(display);
+  // WatchSelection(display,window,"PRIMARY");
+  WatchSelection(display,window,"CLIPBOARD");
+  XDestroyWindow(display, window);
+  XCloseDisplay(display);
+  return 0;
+}
diff --git a/public/node_modules/clipboard-event/platform/clipboard-event-handler-mac.swift b/public/node_modules/clipboard-event/platform/clipboard-event-handler-mac.swift
new file mode 100644
index 0000000..e9a8a35
--- /dev/null
+++ b/public/node_modules/clipboard-event/platform/clipboard-event-handler-mac.swift
@@ -0,0 +1,24 @@
+//
+//  main.swift
+//  clipboard-event
+//
+//  Created by Joonhee Lee on 2021/01/30.
+//
+
+import Foundation
+import Cocoa
+
+let pasteboard: NSPasteboard = NSPasteboard.general
+var count: Int = pasteboard.changeCount
+var saved: String = pasteboard.string(forType: .string) ?? "null"
+
+repeat{
+    usleep(500000)
+    if(count < pasteboard.changeCount && saved != pasteboard.string(forType: .string)){
+        usleep(100000)
+        count = pasteboard.changeCount
+        saved = pasteboard.string(forType: .string) ?? "null"
+        print("CLIPBOARD_CHANGE")
+        fflush(stdout)
+    }
+}while true
diff --git a/public/node_modules/clipboard-event/platform/clipboard-event-handler-win32.cs b/public/node_modules/clipboard-event/platform/clipboard-event-handler-win32.cs
new file mode 100644
index 0000000..fa00f86
--- /dev/null
+++ b/public/node_modules/clipboard-event/platform/clipboard-event-handler-win32.cs
@@ -0,0 +1,44 @@
+using System;
+using System.Windows.Forms;
+using System.Runtime.InteropServices;
+
+namespace clipboard_event_handler_win32 {
+    internal static class NativeMethods {
+        //Reference https://docs.microsoft.com/en-us/windows/desktop/dataxchg/wm-clipboardupdate
+        public const int WM_CLIPBOARDUPDATE = 0x031D;
+        //Reference https://www.pinvoke.net/default.aspx/Constants.HWND
+        public static IntPtr HWND_MESSAGE = new IntPtr(-3);
+        //Reference https://www.pinvoke.net/default.aspx/user32/AddClipboardFormatListener.html
+        [DllImport("user32.dll", SetLastError = true)]
+        [return: MarshalAs(UnmanagedType.Bool)]
+        public static extern bool AddClipboardFormatListener(IntPtr hwnd);
+        //Reference https://www.pinvoke.net/default.aspx/user32.setparent
+        [DllImport("user32.dll", SetLastError = true)]
+        public static extern IntPtr SetParent(IntPtr hWndChild, IntPtr hWndNewParent);
+    }
+
+    public sealed class ClipboardNotification {
+        private class NotificationForm : Form {
+            public NotificationForm() {
+                //Turn the child window into a message-only window (refer to Microsoft docs)
+                NativeMethods.SetParent(Handle, NativeMethods.HWND_MESSAGE);
+                //Place window in the system-maintained clipboard format listener list
+                NativeMethods.AddClipboardFormatListener(Handle);
+            }
+
+            protected override void WndProc(ref Message m) {
+                //Listen for operating system messages
+                if (m.Msg == NativeMethods.WM_CLIPBOARDUPDATE)
+                {
+                    Console.WriteLine("CLIPBOARD_CHANGE");
+                }
+                //Called for any unhandled messages
+                base.WndProc(ref m);
+            }
+        }
+
+        private static void Main(string[] args) {
+            Application.Run(new NotificationForm());
+        }
+    }
+}
\ No newline at end of file