PerformanceMeasuring.GameDebugTools.DebugCommandUI.Update C# (CSharp) Method

        public override void Update(GameTime gameTime)
        {
            KeyboardState keyState = Keyboard.GetState();

            float dt = (float)gameTime.ElapsedGameTime.TotalSeconds;
            const float OpenSpeed = 8.0f;
            const float CloseSpeed = 8.0f;

            switch (state)
            {
                case State.Closed:
                    if (keyState.IsKeyDown(Keys.Tab))
                        Show();
                    break;
                case State.Opening:
                    stateTransition += dt * OpenSpeed;
                    if (stateTransition > 1.0f)
                    {
                        stateTransition = 1.0f;
                        state = State.Opened;
                    }
                    break;
                case State.Opened:
                    ProcessKeyInputs(dt);
                    break;
                case State.Closing:
                    stateTransition -= dt * CloseSpeed;
                    if (stateTransition < 0.0f)
                    {
                        stateTransition = 0.0f;
                        state = State.Closed;
                    }
                    break;
            }

            prevKeyState = keyState;

            base.Update(gameTime);
        }