TEST(overlay): adds build files for OverlayTest

adds a test application that connects to MumbleOverlayPipe and displays the overlay as configured

src/mumble/CMakeLists.txt

@@ -564,6 +564,12 @@ else()
 	target_compile_definitions(mumble_client_object_lib PUBLIC "RESTRICT=__restrict__")
 endif()
 
+target_sources(mumble_client_object_lib
+	PRIVATE
+		"SharedMemory.h"
+		"SharedMemory.cpp"
+)
+
 if(WIN32)
 	target_sources(mumble_client_object_lib PRIVATE
 		"GlobalShortcut_win.cpp"
@@ -883,6 +889,8 @@ if(overlay)
 			"OverlayUserGroup.h"
 			"PathListWidget.cpp"
 			"PathListWidget.h"
+			"SharedMemory.h"
+			"SharedMemory.cpp"
 	)
 
 	if(WIN32)

src/tests/CMakeLists.txt

@@ -20,6 +20,9 @@ if(client)
 		# For some reason Qt segfaults when executing this test on FreeBSD without a display (even when using the offscreen plugin)
 		use_test("TestSettingsJSONSerialization")
 	endif()
+	if(overlay)
+		use_test("OverlayTest")
+	endif()
 endif()
 
 if(server)

src/tests/OverlayTest/CMakeLists.txt

@@ -0,0 +1,15 @@
+# Copyright 2020-2022 The Mumble Developers. All rights reserved.
+# Use of this source code is governed by a BSD-style license
+# that can be found in the LICENSE file at the root of the
+# Mumble source tree or at <https://www.mumble.info/LICENSE>.
+
+add_executable(OverlayTest OverlayTest.cpp)
+
+set_target_properties(OverlayTest PROPERTIES AUTOMOC ON)
+
+find_pkg(Qt5 COMPONENTS Gui Widgets REQUIRED)
+
+target_link_libraries(OverlayTest PRIVATE mumble_client_object_lib)
+target_link_libraries(OverlayTest PRIVATE shared Qt5::Gui Qt5::Test Qt5::Widgets)
+
+add_test(NAME OverlayTest COMMAND $<TARGET_FILE:OverlayTest>)

src/tests/OverlayTest/OverlayTest.cpp

@@ -20,8 +20,11 @@
 #include <QtCore>
 #include <QtGui>
 #include <QtNetwork>
+#include <QWidget>
+#include <QElapsedTimer>
+#include <QMainWindow>
+#include <QApplication>
 
-#include <ctime>
 
 class OverlayWidget : public QWidget {
 	Q_OBJECT
@@ -33,7 +36,7 @@ class OverlayWidget : public QWidget {
 	SharedMemory2 *smMem;
 	QTimer *qtTimer;
 	QRect qrActive;
-	QTime qtWall;
+	QElapsedTimer qtWall;
 
 	unsigned int iFrameCount;
 	int iLastFpsUpdate;