Fix: MFC remote desktop touchpad two-finger scroll not working

macos/ScreenHandler.h

@@ -2,6 +2,7 @@
 
 #import <CoreGraphics/CoreGraphics.h>
 #import <dispatch/dispatch.h>
+#import <IOKit/pwr_mgt/IOPMLib.h>
 #import "../client/IOCPClient.h"
 #include <vector>
 #include <atomic>
@@ -132,4 +133,7 @@ private:
 
     // Input handler for mouse/keyboard control
     std::unique_ptr<InputHandler> m_inputHandler;
+
+    // Power management: prevent display sleep during remote desktop
+    IOPMAssertionID m_displayAssertionID;
 };

macos/ScreenHandler.mm

@@ -26,6 +26,7 @@ ScreenHandler::ScreenHandler(IOCPClient* client)
     , m_maxFPS(15)
     , m_qualityLevel(QUALITY_GOOD)  // Use fixed QUALITY_GOOD (H264) for web compatibility
     , m_h264Bitrate(3000000)  // 3 Mbps (matches Windows QUALITY_GOOD)
+    , m_displayAssertionID(0)
 {
     memset(&m_bmpHeader, 0, sizeof(m_bmpHeader));
 
@@ -115,6 +116,21 @@ void ScreenHandler::start(IOCPClient* client, uint64_t clientID)
     m_clientID = clientID;
     m_running = true;
 
+    // Prevent display sleep during remote desktop session
+    if (m_displayAssertionID == 0) {
+        IOReturn result = IOPMAssertionCreateWithName(
+            kIOPMAssertionTypeNoDisplaySleep,
+            kIOPMAssertionLevelOn,
+            CFSTR("SimpleRemoter - remote desktop session active"),
+            &m_displayAssertionID
+        );
+        if (result == kIOReturnSuccess) {
+            NSLog(@"Display sleep disabled for remote desktop (ID: %u)", m_displayAssertionID);
+        } else {
+            NSLog(@"Warning: Failed to prevent display sleep (error: 0x%x)", result);
+        }
+    }
+
     m_captureThread = std::thread(&ScreenHandler::captureLoop, this);
 }
 
@@ -130,6 +146,13 @@ void ScreenHandler::stop()
         m_h264Encoder->close();
         m_h264Encoder.reset();
     }
+
+    // Release display sleep assertion - allow screen to turn off
+    if (m_displayAssertionID != 0) {
+        IOPMAssertionRelease(m_displayAssertionID);
+        NSLog(@"Display sleep re-enabled (released ID: %u)", m_displayAssertionID);
+        m_displayAssertionID = 0;
+    }
 }
 
 void ScreenHandler::sendBitmapInfo()

macos/main.mm

@@ -6,6 +6,7 @@
 #import <signal.h>
 #import <unistd.h>
 #import <IOKit/IOKitLib.h>
+#import <IOKit/pwr_mgt/IOPMLib.h>
 #import <fstream>
 #import <thread>
 #import <atomic>
@@ -140,9 +141,113 @@ static std::string getTimeString()
     return std::string([dateString UTF8String]);
 }
 
-// Get active application name
+// Get user idle time in seconds (time since last keyboard/mouse input)
+static double getUserIdleTime()
+{
+    // CGEventSourceSecondsSinceLastEventType returns seconds since last event
+    // kCGEventSourceStateCombinedSessionState includes all input sources
+    CFTimeInterval idleTime = CGEventSourceSecondsSinceLastEventType(
+        kCGEventSourceStateCombinedSessionState,
+        kCGAnyInputEventType
+    );
+    // Defensive: ensure non-negative (edge case protection)
+    return idleTime > 0 ? idleTime : 0;
+}
+
+// Check if screen is locked
+static bool isScreenLocked()
+{
+    // Method 1: Check CGSession dictionary for screen lock status
+    CFDictionaryRef sessionDict = CGSessionCopyCurrentDictionary();
+    if (sessionDict) {
+        // Check for "CGSSessionScreenIsLocked" key
+        CFBooleanRef screenLocked = (CFBooleanRef)CFDictionaryGetValue(
+            sessionDict, CFSTR("CGSSessionScreenIsLocked"));
+        if (screenLocked && CFBooleanGetValue(screenLocked)) {
+            CFRelease(sessionDict);
+            return true;
+        }
+        CFRelease(sessionDict);
+    }
+
+    // Method 2: Check if loginwindow is frontmost (screen saver / lock screen)
+    NSRunningApplication* frontApp = [[NSWorkspace sharedWorkspace] frontmostApplication];
+    if (frontApp) {
+        NSString* bundleId = [frontApp bundleIdentifier];
+        if ([bundleId isEqualToString:@"com.apple.loginwindow"] ||
+            [bundleId isEqualToString:@"com.apple.ScreenSaver.Engine"]) {
+            return true;
+        }
+    }
+
+    return false;
+}
+
+// Format time as HH:MM:SS with prefix
+static std::string formatStatusTime(const char* prefix, double seconds)
+{
+    int totalSecs = (int)seconds;
+    int hours = totalSecs / 3600;
+    int mins = (totalSecs % 3600) / 60;
+    int secs = totalSecs % 60;
+
+    char buffer[64];
+    snprintf(buffer, sizeof(buffer), "%s: %02d:%02d:%02d", prefix, hours, mins, secs);
+    return std::string(buffer);
+}
+
+// Get active application name or idle/locked status (works for background processes)
 static std::string getActiveApp()
 {
+    double idleTime = getUserIdleTime();
+
+    // Check if screen is locked first
+    if (isScreenLocked()) {
+        return formatStatusTime("Locked", idleTime);
+    }
+
+    // Check user idle time (matches Windows/Linux: 6 seconds threshold)
+    // If idle for more than 6 seconds, report inactive status
+    if (idleTime >= 6.0) {
+        return formatStatusTime("Inactive", idleTime);
+    }
+
+    // Use CGWindowListCopyWindowInfo to get the frontmost window
+    // This works reliably even when running as a background/nohup process
+    CFArrayRef windowList = CGWindowListCopyWindowInfo(
+        kCGWindowListOptionOnScreenOnly | kCGWindowListExcludeDesktopElements,
+        kCGNullWindowID
+    );
+
+    if (windowList) {
+        CFIndex count = CFArrayGetCount(windowList);
+        for (CFIndex i = 0; i < count; i++) {
+            CFDictionaryRef window = (CFDictionaryRef)CFArrayGetValueAtIndex(windowList, i);
+
+            // Get window layer - layer 0 is normal windows
+            CFNumberRef layerRef = (CFNumberRef)CFDictionaryGetValue(window, kCGWindowLayer);
+            int layer = 0;
+            if (layerRef) {
+                CFNumberGetValue(layerRef, kCFNumberIntType, &layer);
+            }
+
+            // Skip non-normal windows (menu bar, dock, etc.)
+            if (layer != 0) continue;
+
+            // Get owner name (application name)
+            CFStringRef ownerName = (CFStringRef)CFDictionaryGetValue(window, kCGWindowOwnerName);
+            if (ownerName) {
+                char buffer[256] = {};
+                if (CFStringGetCString(ownerName, buffer, sizeof(buffer), kCFStringEncodingUTF8)) {
+                    CFRelease(windowList);
+                    return std::string(buffer);
+                }
+            }
+        }
+        CFRelease(windowList);
+    }
+
+    // Fallback to NSWorkspace (may not work for background processes)
     NSRunningApplication* app = [[NSWorkspace sharedWorkspace] frontmostApplication];
     if (app) {
         NSString* name = [app localizedName];
@@ -478,6 +583,30 @@ int main(int argc, const char* argv[])
     @autoreleasepool {
         NSLog(@"=== macOS Ghost Client ===");
 
+        // ============== Power Management: Keep System Awake ==============
+        // 1. Disable App Nap - prevent macOS from suspending this process
+        id<NSObject> powerActivity = [[NSProcessInfo processInfo]
+            beginActivityWithOptions:(NSActivityUserInitiated | NSActivityIdleSystemSleepDisabled)
+            reason:@"Remote control client must maintain persistent connection"];
+        NSLog(@"App Nap disabled, activity token acquired");
+
+        // 2. Prevent system idle sleep using IOKit power assertion
+        IOPMAssertionID sleepAssertionID = 0;
+        IOReturn result = IOPMAssertionCreateWithName(
+            kIOPMAssertionTypeNoIdleSleep,
+            kIOPMAssertionLevelOn,
+            CFSTR("SimpleRemoter macOS client - maintaining remote connection"),
+            &sleepAssertionID
+        );
+        if (result == kIOReturnSuccess) {
+            NSLog(@"Power assertion created: system idle sleep disabled (ID: %u)", sleepAssertionID);
+        } else {
+            NSLog(@"Warning: Failed to create power assertion (error: 0x%x)", result);
+        }
+
+        // 3. Display sleep: managed by ScreenHandler - only prevents display sleep
+        //    when remote desktop is actively connected (saves power when idle)
+
         // Setup signal handlers
         setupSignals();
 
@@ -549,6 +678,15 @@ int main(int argc, const char* argv[])
         }
 
         NSLog(@"Shutting down...");
+
+        // Release power assertions
+        if (sleepAssertionID) {
+            IOPMAssertionRelease(sleepAssertionID);
+            NSLog(@"Released sleep assertion");
+        }
+        // Display assertion is managed by ScreenHandler (released in stop())
+        // powerActivity is automatically released when exiting @autoreleasepool
+        (void)powerActivity;  // Suppress unused variable warning
     }
 
     return 0;

server/2015Remote/ScreenSpyDlg.cpp

@@ -2305,8 +2305,8 @@ BOOL CScreenSpyDlg::PreTranslateMessage(MSG* pMsg)
         MSG wheelMsg = *pMsg;
         wheelMsg.lParam = MAKELPARAM(pt.x, pt.y);
         SendScaledMouseMessage(&wheelMsg, true);
+        return TRUE;  // 已处理，阻止继续分发到 OnMouseWheel
     }
-    break;
     case WM_KEYDOWN:
     case WM_KEYUP:
     case WM_SYSKEYDOWN:
@@ -2682,7 +2682,20 @@ void CScreenSpyDlg::OnLButtonUp(UINT nFlags, CPoint point)
 
 BOOL CScreenSpyDlg::OnMouseWheel(UINT nFlags, short zDelta, CPoint pt)
 {
-    return __super::OnMouseWheel(nFlags, zDelta, pt);
+    // Convert screen coordinates to client coordinates
+    ScreenToClient(&pt);
+
+    // Build MSG structure for SendScaledMouseMessage
+    MSG msg = {};
+    msg.hwnd = m_hWnd;
+    msg.message = WM_MOUSEWHEEL;
+    msg.wParam = MAKEWPARAM(nFlags, zDelta);
+    msg.lParam = MAKELPARAM(pt.x, pt.y);
+    msg.time = GetTickCount();
+    msg.pt = { pt.x, pt.y };
+
+    SendScaledMouseMessage(&msg, true);
+    return TRUE;  // Message handled, don't pass to parent
 }