Class BaseControl

extensions/olcPGEX_QuickGUI.h:86–127

Virtual base class for all controls

	// Virtual base class for all controls
	class BaseControl
	{
	public:
		BaseControl(olc::QuickGUI::Manager& manager);
		virtual ~BaseControl();

	public:
		// Switches the control on/off
		void Enable(const bool bEnable);
		// Sets whether or not the control is interactive/displayed
		bool bVisible = true;

		// True on single frame control begins being manipulated
		bool bPressed = false;
		// True on all frames control is under user manipulation
		bool bHeld = false;
		// True on single frame control ceases being manipulated
		bool bReleased = false;

	public:
		// Updates the controls behvaiour
		virtual void Update(olc::PixelGameEngine* pge) = 0;
		// Draws the control using "sprite" based CPU operations
		virtual void Draw(olc::PixelGameEngine* pge) = 0;
		// Draws the control using "decal" based GPU operations
		virtual void DrawDecal(olc::PixelGameEngine* pge) = 0;

	protected:
		// Controls are related to a manager, where the theme resides
		// and control groups can be implemented
		olc::QuickGUI::Manager& m_manager;

		// All controls exists in one of four states
		// Disabled - Greyed out and not interactive
		// Normal - interactive and operational
		// Hover - currently under the users mouse focus
		// Click - user is interacting with the control
		enum class State { Disabled, Normal, Hover, Click } m_state = State::Normal;
		
		// To add a "swish" to things, controls can fade between states
		float m_fTransition = 0.0;
	};


	// A QuickGUI::Manager acts as a convenient grouping of controls