Add blur lua event, called when opening another interface window

src/gui/game/GameController.cpp

@@ -863,6 +863,14 @@ void GameController::Tick()
 	commandInterface->OnTick();
 }
 
+void GameController::Blur()
+{
+	// Tell lua that mouse is up (even if it really isn't)
+	MouseUp(0, 0, 0, 1);
+	BlurEvent ev;
+	commandInterface->HandleEvent(LuaEvents::blur, &ev);
+}
+
 void GameController::Exit()
 {
 	CloseEvent ev;

src/gui/game/GameController.h

@@ -68,6 +68,7 @@ public:
 	bool KeyPress(int key, int scan, bool repeat, bool shift, bool ctrl, bool alt);
 	bool KeyRelease(int key, int scan, bool repeat, bool shift, bool ctrl, bool alt);
 	void Tick();
+	void Blur();
 	void Exit();
 
 	void Install();

src/gui/game/GameView.cpp

@@ -1700,9 +1700,7 @@ void GameView::OnBlur()
 	disableShiftBehaviour();
 	isMouseDown = false;
 	drawMode = DrawPoints;
-	c->MouseUp(0, 0, 0, 1); // tell lua that mouse is up (even if it really isn't)
+	c->Blur();
-	if (GetModifiers())
-		c->KeyRelease(0, 0, false, false, false, false);
 }
 
 void GameView::OnTick(float dt)

src/lua/LuaEvents.h

@@ -98,6 +98,12 @@ public:
 	int PushToStack(lua_State *l) override { return 0; }
 };
 
+class BlurEvent: public Event
+{
+public:
+	int PushToStack(lua_State *l) override { return 0; }
+};
+
 class CloseEvent: public Event
 {
 public:
@@ -116,6 +122,7 @@ public:
 		mousemove,
 		mousewheel,
 		tick,
+		blur,
 		close
 	};
 

src/lua/LuaScriptInterface.cpp

@@ -3314,6 +3314,7 @@ void LuaScriptInterface::initEventAPI()
 	lua_pushinteger(l, LuaEvents::mousemove); lua_setfield(l, -2, "mousemove");
 	lua_pushinteger(l, LuaEvents::mousewheel); lua_setfield(l, -2, "mousewheel");
 	lua_pushinteger(l, LuaEvents::tick); lua_setfield(l, -2, "tick");
+	lua_pushinteger(l, LuaEvents::blur); lua_setfield(l, -2, "blur");
 	lua_pushinteger(l, LuaEvents::close); lua_setfield(l, -2, "close");
 }