Ensure CTRL, SHIFT and ALT states are reset when Window falls into background

src/game/GameView.cpp

@@ -1035,6 +1035,13 @@ void GameView::OnKeyRelease(int key, Uint16 character, bool shift, bool ctrl, bo
 	}
 }
 
+void GameView::OnBlur()
+{
+	disableAltBehaviour();
+	disableCtrlBehaviour();
+	disableShiftBehaviour();
+}
+
 void GameView::OnTick(float dt)
 {
 	if(selectMode==PlaceSave && !placeSaveThumb)

src/game/GameView.h

@@ -148,6 +148,9 @@ public:
 	virtual void OnMouseWheel(int x, int y, int d);
 	virtual void OnKeyPress(int key, Uint16 character, bool shift, bool ctrl, bool alt);
 	virtual void OnKeyRelease(int key, Uint16 character, bool shift, bool ctrl, bool alt);
+	virtual void OnTick(float dt);
+	virtual void OnDraw();
+	virtual void OnBlur();
 
 	//Top-level handers, for Lua interface
 	virtual void DoDraw();
@@ -158,10 +161,6 @@ public:
 	virtual void DoKeyPress(int key, Uint16 character, bool shift, bool ctrl, bool alt);
 	virtual void DoKeyRelease(int key, Uint16 character, bool shift, bool ctrl, bool alt);
 
-	//virtual void OnKeyPress(int key, Uint16 character, bool shift, bool ctrl, bool alt) {}
-	//virtual void OnKeyRelease(int key, Uint16 character, bool shift, bool ctrl, bool alt) {}
-	virtual void OnTick(float dt);
-	virtual void OnDraw();
 	class MenuAction;
 	class ToolAction;
 };

src/interface/Engine.cpp

@@ -82,6 +82,9 @@ void Engine::ShowWindow(Window * window)
 
 		windows.push(state_);
 	}
+	if(state_)
+		state_->DoBlur();
+
 	state_ = window;
 
 }
@@ -102,6 +105,9 @@ void Engine::CloseWindow()
 		}
 		state_ = windows.top();
 		windows.pop();
+
+		if(state_)
+			state_->DoFocus();
 	}
 	else
 	{

src/interface/Window.cpp

@@ -107,6 +107,18 @@ void Window::DoInitialized()
 	OnInitialized();
 }
 
+void Window::DoBlur()
+{
+
+	OnBlur();
+}
+
+void Window::DoFocus()
+{
+
+	OnFocus();
+}
+
 void Window::DoDraw()
 {
 	OnDraw();

src/interface/Window.h

@@ -52,6 +52,8 @@ enum ChromeStyle
 		virtual void DoExit();
 		virtual void DoTick(float dt);
 		virtual void DoDraw();
+		virtual void DoFocus();
+		virtual void DoBlur();
 
 		virtual void DoMouseMove(int x, int y, int dx, int dy);
 		virtual void DoMouseDown(int x, int y, unsigned button);
@@ -73,6 +75,8 @@ enum ChromeStyle
 		virtual void OnExit() {}
 		virtual void OnTick(float dt) {}
 		virtual void OnDraw() {}
+		virtual void OnFocus() {}
+		virtual void OnBlur() {}
 
 		virtual void OnMouseMove(int x, int y, int dx, int dy) {}
 		virtual void OnMouseDown(int x, int y, unsigned button) {}