From 9978a85a4fc163015c82670e79fb7dc0836820ce Mon Sep 17 00:00:00 2001
From: jpmcmu <jpmcmu@gmail.com>
Date: Wed, 22 Apr 2015 19:33:25 -0400
Subject: [PATCH] Added modifier flags to mouse events as a fix for sticky
 keys.

---
 src/lib/platform/OSXKeyState.cpp | 30 +++++++++++++++++++++++++++++-
 src/lib/platform/OSXKeyState.h   |  1 +
 src/lib/platform/OSXScreen.cpp   | 12 ++++++++++++
 3 files changed, 42 insertions(+), 1 deletion(-)

diff --git a/src/lib/platform/OSXKeyState.cpp b/src/lib/platform/OSXKeyState.cpp
index a40ad16c..60d57673 100644
--- a/src/lib/platform/OSXKeyState.cpp
+++ b/src/lib/platform/OSXKeyState.cpp
@@ -189,7 +189,7 @@ OSXKeyState::OSXKeyState(IEventQueue* events) :
 OSXKeyState::OSXKeyState(IEventQueue* events, synergy::KeyMap& keyMap) :
 	KeyState(events, keyMap)
 {
-	init();
+	init();a
 }
 
 OSXKeyState::~OSXKeyState()
@@ -390,6 +390,34 @@ OSXKeyState::fakeCtrlAltDel()
 	return false;
 }
 
+CGEventFlags
+OSXKeyState::getModifierStateAsOSXFlags()
+{
+    CGEventFlags modifiers = 0;
+    
+    if (m_shiftPressed) {
+        modifiers |= kCGEventFlagMaskShift;
+    }
+    
+    if (m_controlPressed) {
+        modifiers |= kCGEventFlagMaskControl;
+    }
+    
+    if (m_altPressed) {
+        modifiers |= kCGEventFlagMaskAlternate;
+    }
+    
+    if (m_superPressed) {
+        modifiers |= kCGEventFlagMaskCommand;
+    }
+    
+    if (m_capsPressed) {
+        modifiers |= kCGEventFlagMaskAlphaShift;
+    }
+    
+    return modifiers;
+}
+
 KeyModifierMask
 OSXKeyState::pollActiveModifiers() const
 {
diff --git a/src/lib/platform/OSXKeyState.h b/src/lib/platform/OSXKeyState.h
index fd481080..207d0738 100644
--- a/src/lib/platform/OSXKeyState.h
+++ b/src/lib/platform/OSXKeyState.h
@@ -100,6 +100,7 @@ public:
 	virtual SInt32		pollActiveGroup() const;
 	virtual void		pollPressedKeys(KeyButtonSet& pressedKeys) const;
 
+    CGEventFlags getModifierStateAsOSXFlags();
 protected:
 	// KeyState overrides
 	virtual void		getKeyMap(synergy::KeyMap& keyMap);
diff --git a/src/lib/platform/OSXScreen.cpp b/src/lib/platform/OSXScreen.cpp
index 3869d24f..bf536f70 100644
--- a/src/lib/platform/OSXScreen.cpp
+++ b/src/lib/platform/OSXScreen.cpp
@@ -528,6 +528,10 @@ OSXScreen::postMouseEvent(CGPoint& pos) const
     // Dragging events also need the click state
     CGEventSetIntegerValueField(event, kCGMouseEventClickState, m_clickState);
     
+    // Fix for sticky keys
+    CGEventFlags modifiers = m_keyState->getModifierStateAsOSXFlags();
+    CGEventSetFlags(event, modifiers);
+    
 	CGEventPost(kCGHIDEventTap, event);
 	
 	CFRelease(event);
@@ -595,6 +599,10 @@ OSXScreen::fakeMouseButton(ButtonID id, bool press)
     
     CGEventSetIntegerValueField(event, kCGMouseEventClickState, m_clickState);
     
+    // Fix for sticky keys
+    CGEventFlags modifiers = m_keyState->getModifierStateAsOSXFlags();
+    CGEventSetFlags(event, modifiers);
+    
     m_buttonState.set(index, state);
     CGEventPost(kCGHIDEventTap, event);
     
@@ -705,6 +713,10 @@ OSXScreen::fakeMouseWheel(SInt32 xDelta, SInt32 yDelta) const
 			mapScrollWheelFromSynergy(yDelta),
 			-mapScrollWheelFromSynergy(xDelta));
 		
+        // Fix for sticky keys
+        CGEventFlags modifiers = m_keyState->getModifierStateAsOSXFlags();
+        CGEventSetFlags(scrollEvent, modifiers);
+        
 		CGEventPost(kCGHIDEventTap, scrollEvent);
 		CFRelease(scrollEvent);
 #else