notify on height change

src/desk-controller.cpp

@@ -222,6 +222,7 @@ LinakDesk::doDeskControl(void)
 {
 	unique_lock<mutex> lck(m_cmdMutex);
 	int target_height = m_currentHeight;
+	int last_height = m_currentHeight;
 	lck.unlock();
 	while (true)
 	{
@@ -249,6 +250,14 @@ LinakDesk::doDeskControl(void)
 					m_currentHeight = getInternalHeight();
 					lck.unlock();
 					cout << "currentHeight=" << m_currentHeight << endl;
+					if (m_currentHeight != last_height)
+					{
+						for (auto f : m_frontends)
+						{
+							f.get().updateHeight(m_currentHeight);
+						}
+						last_height = m_currentHeight;
+					}
 				}
 			} while (m_finished == true);
 			target_height -= m_offset;