Implemented AppServer::HandleKeyEvent and FindApp

Minor tweaks to ServerApp::PostMessage to allow for regular message posting


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@2629 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/servers/app/server/AppServer.cpp

@@ -558,11 +558,195 @@ void AppServer::Broadcast(int32 code)
 /*!
 	\brief Handles all incoming key messages
 	\param code ID code of the key message
-	\param buffer Attachment buffer of the keyboard message
+	\param buffer Attachment buffer of the keyboard message. Always non-NULL.
+	
+	This function handles 5 message codes: B_KEY_UP, B_KEY_DOWN, 
+	B_UNMAPPED_KEY_UP, B_UNMAPPED_KEY_DOWN, and B_MODIFIERS_CHANGED. It filters
+	out any combinations which are app_server specific:
+	# Left Ctrl+Alt+Shift+F12 - set to 640x480x256@60Hz
+	# Alt + Function Key - Change workspace
+	# Control+Tab - Send to Deskbar for the Twitcher
 */
 void AppServer::HandleKeyMessage(int32 code, int8 *buffer)
 {
-	// TODO: Implement
+	int8 *index=buffer;
+	
+	switch(code)
+	{
+		case B_KEY_DOWN:
+		{
+			// Attached Data:
+			// 1) int64 bigtime_t object of when the message was sent
+			// 2) int32 raw key code (scancode)
+			// 3) int32 modifier-independent ASCII code for the character
+			// 4) int32 repeat count
+			// 5) int32 modifiers
+			// 6) int8[3] UTF-8 data generated
+			// 7) int8 number of bytes to follow containing the 
+			//		generated string
+			// 8) Character string generated by the keystroke
+			// 9) int32 number of elements in the key state array to follow
+			// 10) int8 state of all keys
+			
+			// Obtain only what data which we'll need
+			index+=sizeof(int64);
+			int32 scancode=*((int32*)index); index+=sizeof(int32) * 3;
+			int32 modifiers=*((int32*)index); index+=sizeof(int8) * 3;
+			int8 stringlength=*index; index+=stringlength + sizeof(int8);
+			int32 keyindices=*index;
+			
+			
+			// Check for workspace change or safe video mode
+			if(scancode>0x01 && scancode<0x0e)
+			{
+				// F12
+				if(scancode==0x0d)
+				{
+					if(modifiers & B_LEFT_COMMAND_KEY &
+						B_LEFT_CONTROL_KEY & B_LEFT_SHIFT_KEY)
+					{
+						// TODO: Set to Safe Mode here. (DisplayDriver API change)
+					}
+				}
+			
+				if(modifiers & B_COMMAND_KEY)
+					SetWorkspace(scancode-2);
+				
+				// Tab key
+				if(scancode==0x26 && (modifiers & B_CONTROL_KEY))
+				{
+					ServerApp *deskbar=FindApp("application/x-vnd.Be-TSKB");
+					if(deskbar)
+					{
+						// I hope this calculation's right ;)
+						size_t msgsize=sizeof(int64) + ( sizeof(int32) * 5) +
+								( sizeof(int8) * (4+ stringlength + keyindices));
+						deskbar->PostMessage(code, msgsize, buffer);
+						break;
+					}
+				}
+			}
+			
+			// We got this far, so apparently it's safe to pass to the active
+			// window.
+			
+			// TODO: Call ServerWindow::HandleKeyEvent when we have ServerWindow.h
+
+			break;
+		}
+		case B_KEY_UP:
+		{
+			// Attached Data:
+			// 1) int64 bigtime_t object of when the message was sent
+			// 2) int32 raw key code (scancode)
+			// 3) int32 modifier-independent ASCII code for the character
+			// 4) int32 modifiers
+			// 5) int8[3] UTF-8 data generated
+			// 6) int8 number of bytes to follow containing the 
+			//		generated string
+			// 7) Character string generated by the keystroke
+			// 8) int32 number of elements in the key state array to follow
+			// 9) int8 state of all keys
+			
+			// Obtain only what data which we'll need
+			index+=sizeof(int64);
+			int32 scancode=*((int32*)index); index+=sizeof(int32) * 3;
+			int32 modifiers=*((int32*)index); index+=sizeof(int8) * 3;
+			int8 stringlength=*index; index+=stringlength + sizeof(int8);
+			int32 keyindices=*index;
+			
+			// Send the key_up msg to the Deskbar for the twitcher
+			
+			// Tab key
+			if(scancode==0x26 && (modifiers & B_CONTROL_KEY))
+			{
+				ServerApp *deskbar=FindApp("application/x-vnd.Be-TSKB");
+				if(deskbar)
+				{
+					// I hope this calculation's right ;)
+					size_t msgsize=sizeof(int64) + ( sizeof(int32) * 4) +
+							( sizeof(int8) * (4+ stringlength + keyindices));
+					deskbar->PostMessage(code, msgsize, buffer);
+					break;
+				}
+			}
+
+			// We got this far, so apparently it's safe to pass to the active
+			// window.
+			
+			// fall through to the next case
+		}
+		case B_UNMAPPED_KEY_DOWN:
+		{
+			// Attached Data:
+			// 1) int64 bigtime_t object of when the message was sent
+			// 2) int32 raw key code (scancode)
+			// 3) int32 modifiers
+			// 4) int32 number of elements in the key state array to follow
+			// 5) int8 state of all keys
+
+			// fall through to the next case
+		}
+		case B_UNMAPPED_KEY_UP:
+		{
+			// Attached Data:
+			// 1) int64 bigtime_t object of when the message was sent
+			// 2) int32 raw key code (scancode)
+			// 3) int32 modifiers
+			// 4) int32 number of elements in the key state array to follow
+			// 5) int8 state of all keys
+
+			// fall through to the next case
+		}
+		case B_MODIFIERS_CHANGED:
+		{
+			// Attached Data:
+			// 1) int64 bigtime_t object of when the message was sent
+			// 2) int32 modifiers
+			// 3) int32 old modifiers
+			// 4) int32 number of elements in the key state array to follow
+			// 5) int8 state of all keys
+			
+			// TODO: Call ServerWindow::HandleKeyEvent when we have ServerWindow.h
+			
+			break;
+		}
+		default:
+			break;
+	}
+}
+
+/*!
+	\brief Finds the application with the given signature
+	\param sig MIME signature of the application to find
+	\return the corresponding ServerApp or NULL if not found
+	
+	This call should be made only when necessary because it locks the app list 
+	while it does its searching.
+*/
+ServerApp *AppServer::FindApp(const char *sig)
+{
+	if(!sig)
+		return NULL;
+
+	ServerApp *foundapp=NULL;
+
+	acquire_sem(_applist_lock);
+
+	for(int32 i=0; i<_applist->CountItems();i++)
+	{
+		foundapp=(ServerApp*)_applist->ItemAt(i);
+		if(foundapp && foundapp->_signature==sig)
+		{
+			release_sem(_applist_lock);
+			return foundapp;
+		}
+	}
+
+	release_sem(_applist_lock);
+	
+	// couldn't find a match
+	return NULL;
 }
 
 /*!

src/servers/app/server/AppServer.h

@@ -33,7 +33,8 @@ public:
 	void DispatchMessage(int32 code, int8 *buffer);
 	void Broadcast(int32 code);
 	void HandleKeyMessage(int32 code, int8 *buffer);
-
+	ServerApp *FindApp(const char *sig);
+	
 	create_decorator *make_decorator;	// global function pointer
 private:
 	friend Decorator *instantiate_decorator(Layer *lay, const char *title, uint32 dflags, uint32 wlook);

src/servers/app/server/ServerApp.cpp

@@ -176,9 +176,9 @@ bool ServerApp::PingTarget(void)
 	\brief Send a message to the ServerApp with no attachments
 	\param code ID code of the message to post
 */
-void ServerApp::PostMessage(int32 code)
+void ServerApp::PostMessage(int32 code, size_t size, int8 *buffer)
 {
-	write_port(_receiver,code, NULL, 0);
+	write_port(_receiver,code, buffer, size);
 }
 
 /*!

src/servers/app/server/ServerApp.h

@@ -67,7 +67,7 @@ public:
 	void Activate(bool value) { _isactive=value; }
 	bool PingTarget(void);
 	
-	void PostMessage(int32 code);
+	void PostMessage(int32 code, size_t size=0, int8 *buffer=NULL);
 protected:
 	friend AppServer;
 	void DispatchMessage(int32 code, int8 *buffer);