Feature to drag a file from Mac (client) to Windows (server):

- temporarily drop dragging file to desktop (specified by command line arg --filetransfer-des)
- on Mac side, fake an esc key while dragging off the screen does not seem to work

src/lib/platform/CMSWindowsScreen.cpp

@@ -1835,3 +1835,9 @@ CMSWindowsScreen::CHotKeyItem::operator<(const CHotKeyItem& x) const
 	return (m_keycode < x.m_keycode ||
 			(m_keycode == x.m_keycode && m_mask < x.m_mask));
 }
+
+void
+CMSWindowsScreen::fakeDraggingFiles(CString str)
+{
+	
+}

src/lib/platform/CMSWindowsScreen.h

@@ -115,6 +115,7 @@ public:
 	virtual void		setOptions(const COptionsList& options);
 	virtual void		setSequenceNumber(UInt32);
 	virtual bool		isPrimary() const;
+	virtual void		fakeDraggingFiles(CString str);
 
 protected:
 	// IPlatformScreen overrides

src/lib/platform/CMakeLists.txt

@@ -103,6 +103,8 @@ set(inc
 	../ipc
 	../net
 	../io
+	../server
+	../client
 	../synwinhk
 	../synwinxt
 )
@@ -123,7 +125,7 @@ include_directories(${inc})
 add_library(platform STATIC ${src})
 
 if (UNIX)
-	target_link_libraries(platform io net ipc synergy ${libs})
+	target_link_libraries(platform io net ipc synergy server client ${libs})
 endif()
 
 if (APPLE)

src/lib/platform/COSXPasteboardPeeker.m

@@ -29,6 +29,7 @@ getDraggedFileURL()
 	NSArray* files = [pboard propertyListForType:NSFilenamesPboardType];
 	for (id file in files) {
 		[string appendString: (NSString*)file];
+		[string appendString: @"\0"];
 	}
 	
 	return (CFStringRef)string;

src/lib/platform/COSXScreen.cpp

@@ -34,6 +34,9 @@
 #include "XArch.h"
 #include "COSXDragSimulator.h"
 #include "COSXPasteboardPeeker.h"
+#include "CClientApp.h"
+#include "CServerApp.h"
+#include "CClient.h"
 
 #include <math.h>
 
@@ -98,6 +101,7 @@ COSXScreen::COSXScreen(IEventQueue* events, bool isPrimary, bool autoShowHideCur
 	m_eventTapRLSR(nullptr),
 	m_eventTapPort(nullptr),
 	m_pmRootPort(0),
+	m_draggingStarted(false),
 	m_fakeDraggingStarted(false),
 	m_getDropTargetThread(NULL)
 {
@@ -593,6 +597,7 @@ COSXScreen::fakeMouseButton(ButtonID id, bool press)
 		}
 		
 		m_fakeDraggingStarted = false;
+		m_draggingStarted = false;
 	}
 }
 
@@ -638,6 +643,11 @@ COSXScreen::fakeMouseMove(SInt32 x, SInt32 y)
 		fakeKeyDown(kKeyControl_L, 8194, 29);
 	}
 	
+	// index 0 means left mouse button
+	if (m_buttonState.test(0)) {
+		m_draggingStarted = true;
+	}
+	
 	// synthesize event
 	CGPoint pos;
 	pos.x = x;
@@ -890,6 +900,24 @@ COSXScreen::leave()
 {
     hideCursor();
     
+	if (m_draggingStarted) {
+		if (!m_isPrimary) {
+			CFStringRef dragInfo = getDraggedFileURL();
+			char* dragInfoCStr = CFStringRefToUTF8String(dragInfo);
+			LOG((CLOG_DEBUG "drag info: %s", dragInfoCStr));
+			CFRelease(dragInfo);
+			CString fileList(dragInfoCStr);
+			size_t size = fileList.size();
+			CClientApp& app = CClientApp::instance();
+			CClient* client = app.getClientPtr();
+			UInt32 fileCount = 1;
+			client->draggingInfoSending(fileCount, fileList, size);
+			LOG((CLOG_DEBUG "send dragging file to server"));
+			client->sendFileToServer(dragInfoCStr);
+			m_draggingStarted = false;
+		}
+	}
+	
 	if (m_isPrimary) {
 		// warp to center
 		//warpCursor(m_xCenter, m_yCenter);

src/lib/platform/COSXScreen.h

@@ -97,7 +97,6 @@ public:
 	virtual void		setOptions(const COptionsList& options);
 	virtual void		setSequenceNumber(UInt32);
 	virtual bool		isPrimary() const;
-
 	virtual void		fakeDraggingFiles(CString str);
 	
 	const CString&		getDropTarget() const { return m_dropTarget; }
@@ -345,6 +344,7 @@ private:
 
 	IEventQueue*			m_events;
 	
+	bool					m_draggingStarted;
 	bool					m_fakeDraggingStarted;
 	CThread*				m_getDropTargetThread;
 	CString					m_dropTarget;