hint for mouse/pen input fidelity

intern/ghost/GHOST_ISystem.h

@@ -353,6 +353,14 @@ public:
 	 */
 	virtual GHOST_TSuccess getButtonState(GHOST_TButtonMask mask, bool& isDown) const = 0;
 
+	/** Fidelity of mouse and pen input (this definition will probably live somewhere else)*/
+	typedef enum { LO_FI, NORMAL_FI, HI_FI } InputFidelity;
+
+	/**
+	 * Requests input at a certain fidelity. Certain tools want very smooth input, others don't care.
+	 * @param hint		Desired fidelity of mouse and pen events.
+	 */
+	virtual void setInputFidelity(InputFidelity hint) = 0;
 
 	/***************************************************************************************
 	 ** Access to clipboard.

intern/ghost/intern/GHOST_System.cpp

@@ -48,7 +48,7 @@
 
 
 GHOST_System::GHOST_System()
-: m_displayManager(0), m_timerManager(0), m_windowManager(0), m_eventManager(0), m_ndofManager(0)
+: m_displayManager(0), m_timerManager(0), m_windowManager(0), m_eventManager(0), m_ndofManager(0), m_input_fidelity_hint(NORMAL_FI)
 {
 }
 
@@ -271,6 +271,11 @@ GHOST_TSuccess GHOST_System::getButtonState(GHOST_TButtonMask mask, bool& isDown
 	return success;
 }
 
+void GHOST_System::setInputFidelity(InputFidelity hint)
+{
+	m_input_fidelity_hint = hint;
+}
+
 GHOST_TSuccess GHOST_System::init()
 {
 	m_timerManager = new GHOST_TimerManager ();

intern/ghost/intern/GHOST_System.h

@@ -282,6 +282,12 @@ public:
 	 */
 	virtual GHOST_TSuccess getButtons(GHOST_Buttons& buttons) const = 0;
 	
+	/**
+	 * Requests input at a certain fidelity. Certain tools want very smooth input, others don't care.
+	 * @param hint		Desired fidelity of mouse and pen events.
+	 */
+	void setInputFidelity(InputFidelity hint);
+
 	/**
 	 * Returns the selection buffer
 	 * @param selection		Only used on X11
@@ -354,6 +360,8 @@ protected:
 
 	/** Settings of the display before the display went fullscreen. */
 	GHOST_DisplaySetting m_preFullScreenSetting;
+	
+	InputFidelity m_input_fidelity_hint;
 };
 
 inline GHOST_TimerManager* GHOST_System::getTimerManager() const