added get_modifier_key() as proposed by Olivier Cortes. Thanks.

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@28812 a95241bf-73f2-0310-859d-f6bbb57e9c96

headers/private/input/InputServerTypes.h

@@ -14,6 +14,7 @@
 #define IS_SET_KEY_REPEAT_DELAY 		'Isrd'
 #define IS_GET_KEY_INFO 				'Igki'
 #define IS_GET_MODIFIERS 				'Igmd'
+#define IS_GET_MODIFIER_KEY			'Igmk'
 #define IS_SET_MODIFIER_KEY 			'Ismk'
 #define IS_SET_KEYBOARD_LOCKS 			'Iskl'
 #define IS_GET_MOUSE_SPEED 				'Igms'

src/kits/interface/InterfaceDefs.cpp

@@ -376,12 +376,10 @@ get_mouse_type(int32 *type)
 	BMessage command(IS_GET_MOUSE_TYPE);
 	BMessage reply;
 
-	_control_input_server_(&command, &reply);
-
-	if (reply.FindInt32("mouse_type", type) != B_OK)
-		return B_ERROR;
-
-	return B_OK;
+	status_t err = _control_input_server_(&command, &reply);
+	if (err != B_OK)
+		return err;
+	return reply.FindInt32("mouse_type", type);
 }
 
 
@@ -391,7 +389,9 @@ set_mouse_type(int32 type)
 	BMessage command(IS_SET_MOUSE_TYPE);
 	BMessage reply;
 
-	command.AddInt32("mouse_type", type);
+	status_t err = command.AddInt32("mouse_type", type);
+	if (err != B_OK)
+		return err;
 	return _control_input_server_(&command, &reply);
 }
 
@@ -404,10 +404,11 @@ get_mouse_map(mouse_map *map)
 	const void *data = 0;
 	ssize_t count;
 
-	_control_input_server_(&command, &reply);
-
-	if (reply.FindData("mousemap", B_RAW_TYPE, &data, &count) != B_OK)
-		return B_ERROR;
+	status_t err = _control_input_server_(&command, &reply);
+	if (err == B_OK)
+		err = reply.FindData("mousemap", B_RAW_TYPE, &data, &count);
+	if (err != B_OK)
+		return err;
 
 	memcpy(map, data, count);
 
@@ -421,7 +422,9 @@ set_mouse_map(mouse_map *map)
 	BMessage command(IS_SET_MOUSE_MAP);
 	BMessage reply;
 
-	command.AddData("mousemap", B_RAW_TYPE, map, sizeof(mouse_map));
+	status_t err = command.AddData("mousemap", B_RAW_TYPE, map, sizeof(mouse_map));
+	if (err != B_OK)
+		return err;
 	return _control_input_server_(&command, &reply);
 }
 
@@ -432,8 +435,10 @@ get_click_speed(bigtime_t *speed)
 	BMessage command(IS_GET_CLICK_SPEED);
 	BMessage reply;
 
-	_control_input_server_(&command, &reply);
-
+	status_t err = _control_input_server_(&command, &reply);
+	if (err != B_OK)
+		return err;
+	
 	if (reply.FindInt64("speed", speed) != B_OK)
 		*speed = 500000;
 
@@ -457,8 +462,10 @@ get_mouse_speed(int32 *speed)
 	BMessage command(IS_GET_MOUSE_SPEED);
 	BMessage reply;
 
-	_control_input_server_(&command, &reply);
-
+	status_t err = _control_input_server_(&command, &reply);
+	if (err != B_OK)
+		return err;
+	
 	if (reply.FindInt32("speed", speed) != B_OK)
 		*speed = 65536;
 
@@ -637,13 +644,34 @@ get_keyboard_id(uint16 *id)
 
 	_control_input_server_(&command, &reply);
 
-	reply.FindInt16("id", (int16 *)&kid);
+	status_t err = reply.FindInt16("id", (int16 *)&kid);
+	if (err != B_OK)
+		return err;
 	*id = kid;
 
 	return B_OK;
 }
 
 
+status_t
+get_modifier_key(uint32 modifier, uint32 *key)
+{
+	BMessage command(IS_GET_MODIFIER_KEY);
+	BMessage reply;
+	uint32 rkey;
+
+	command.AddInt32("modifier", modifier);
+	_control_input_server_(&command, &reply);
+	
+	status_t err = reply.FindInt32("key", (int32 *) &rkey);
+	if (err != B_OK)
+		return err;
+	*key = rkey;
+	
+	return B_OK;
+}
+
+
 void
 set_modifier_key(uint32 modifier, uint32 key)
 {

src/servers/input/InputServer.cpp

@@ -520,6 +520,9 @@ InputServer::MessageReceived(BMessage* message)
 		case IS_GET_MODIFIERS:
 			status = HandleGetModifiers(message, &reply);
 			break;
+		case IS_GET_MODIFIER_KEY:
+			status = HandleGetModifierKey(message, &reply);
+			break;
 		case IS_SET_MODIFIER_KEY:
 			status = HandleSetModifierKey(message, &reply);
 			break;
@@ -722,6 +725,43 @@ InputServer::HandleGetModifiers(BMessage* message, BMessage* reply)
 }
 
 
+status_t
+InputServer::HandleGetModifierKey(BMessage* message, BMessage* reply)
+{
+	int32 modifier;
+	
+	if (message->FindInt32("modifier", &modifier) == B_OK) {
+		switch (modifier) {
+			case B_CAPS_LOCK:
+				return reply->AddInt32("key", fKeys.caps_key);
+			case B_NUM_LOCK:
+				return reply->AddInt32("key", fKeys.num_key);
+			case B_SCROLL_LOCK:
+				return reply->AddInt32("key", fKeys.scroll_key);
+			case B_LEFT_SHIFT_KEY:
+				return reply->AddInt32("key", fKeys.left_shift_key);
+			case B_RIGHT_SHIFT_KEY:
+				return reply->AddInt32("key", fKeys.right_shift_key);
+			case B_LEFT_COMMAND_KEY:
+				return reply->AddInt32("key", fKeys.left_command_key);
+			case B_RIGHT_COMMAND_KEY:
+				return reply->AddInt32("key", fKeys.right_command_key);
+			case B_LEFT_CONTROL_KEY:
+				return reply->AddInt32("key", fKeys.left_control_key);
+			case B_RIGHT_CONTROL_KEY:
+				return reply->AddInt32("key", fKeys.right_control_key);
+			case B_LEFT_OPTION_KEY:
+				return reply->AddInt32("key", fKeys.left_option_key);
+			case B_RIGHT_OPTION_KEY:
+				return reply->AddInt32("key", fKeys.right_option_key);
+			case B_MENU_KEY:
+				return reply->AddInt32("key", fKeys.menu_key);
+		}
+	}
+	return B_ERROR;
+}
+
+
 status_t
 InputServer::HandleSetModifierKey(BMessage* message, BMessage* reply)
 {

src/servers/input/InputServer.h

@@ -131,6 +131,7 @@ class InputServer : public BApplication {
 		status_t HandleGetSetKeyRepeatDelay(BMessage* message, BMessage* reply);
 		status_t HandleGetKeyInfo(BMessage* message, BMessage* reply);
 		status_t HandleGetModifiers(BMessage* message, BMessage* reply);
+		status_t HandleGetModifierKey(BMessage* message, BMessage* reply);
 		status_t HandleSetModifierKey(BMessage* message, BMessage* reply);
 		status_t HandleSetKeyboardLocks(BMessage* message, BMessage* reply);
 		status_t HandleGetSetMouseSpeed(BMessage* message, BMessage* reply);