text: // Copyright (C) 2002-2007 Nikolaus Gebhardt
  // Copyright (C) 2007-2011 Christian Stehno
  // This file is part of the "Irrlicht Engine".
  // For conditions of distribution and use, see copyright notice in irrlicht.h
  
  #ifndef __C_IRR_DEVICE_FB_H_INCLUDED__
  #define __C_IRR_DEVICE_FB_H_INCLUDED__
  
  #include "IrrCompileConfig.h"
  
  #ifdef _IRR_COMPILE_WITH_FB_DEVICE_
  
  #include "CIrrDeviceStub.h"
  #include "SIrrCreationParameters.h"
  #include "IrrlichtDevice.h"
  #include "IImagePresenter.h"
  #include "ICursorControl.h"
  
  #define KeySym s32
  #include <linux/fb.h>
  #include <linux/kd.h>
  
  namespace irr
  {
  	class CIrrDeviceFB : public CIrrDeviceStub, public video::IImagePresenter
  	{
  	public:
  
  		//! constructor
  		CIrrDeviceFB(const SIrrlichtCreationParameters& params);
  
  		//! destructor
  		virtual ~CIrrDeviceFB();
  
  		//! runs the device. Returns false if device wants to be deleted
  		virtual bool run();
  
  		//! Cause the device to temporarily pause execution and let other processes to run
  		// This should bring down processor usage without major performance loss for Irrlicht
  		virtual void yield();
  
  		//! Pause execution and let other processes to run for a specified amount of time.
  		virtual void sleep(u32 timeMs, bool pauseTimer);
  
  		//! sets the caption of the window
  		virtual void setWindowCaption(const wchar_t* text);
  
  		//! returns if window is active. if not, nothing need to be drawn
  		virtual bool isWindowActive() const;
  
  		//! returns if window has focus
  		virtual bool isWindowFocused() const;
  
  		//! returns if window is minimized
  		virtual bool isWindowMinimized() const;
  
  		//! Minimizes window
  		virtual void minimizeWindow();
  
  		//! Maximizes window
  		virtual void maximizeWindow();
  
  		//! Restores original window size
  		virtual void restoreWindow();
  
  		//! presents a surface in the client area
  		virtual bool present(video::IImage* surface, void* windowId = 0, core::rect<s32>* src=0 );
  
  		//! notifies the device that it should close itself
  		virtual void closeDevice();
  
  		//! Sets if the window should be resizeable in windowed mode.
  		virtual void setResizable(bool resize=false);
  
  		//! Returns the type of this device
  		virtual E_DEVICE_TYPE getType() const;
  
  	private:
  
  		//! create the driver
  		void createDriver();
  
  		bool createWindow(const core::dimension2d<u32>& windowSize, u32 bits);
  
  		//! Implementation of the cursor control
  		class CCursorControl : public gui::ICursorControl
  		{
  		public:
  
  			CCursorControl(CIrrDeviceFB* dev, bool null)
  				: Device(dev), IsVisible(true), Null(null)
  			{
  				Device->grab();
  			}
  
  			~CCursorControl()
  			{
  				Device->drop();
  			}
  
  			//! Changes the visible state of the mouse cursor.
  			virtual void setVisible(bool visible)
  			{
  				IsVisible = visible;
  			}
  
  			//! Returns if the cursor is currently visible.
  			virtual bool isVisible() const
  			{
  				return IsVisible;
  			}
  
  			//! Sets the new position of the cursor.
  			virtual void setPosition(const core::position2d<f32> &pos)
  			{
  				setPosition(pos.X, pos.Y);
  			}
  
  			//! Sets the new position of the cursor.
  			virtual void setPosition(f32 x, f32 y)
  			{
  				setPosition((s32)(x*Device->CreationParams.WindowSize.Width), (s32)(y*Device->CreationParams.WindowSize.Height));
  			}
  
  			//! Sets the new position of the cursor.
  			virtual void setPosition(const core::position2d<s32> &pos)
  			{
  				setPosition(pos.X, pos.Y);
  			}
  
  			//! Sets the new position of the cursor.
  			virtual void setPosition(s32 x, s32 y)
  			{
  			}
  
  			//! Returns the current position of the mouse cursor.
  			virtual const core::position2d<s32>& getPosition()
  			{
  				updateCursorPos();
  				return CursorPos;
  			}
  
  			//! Returns the current position of the mouse cursor.
  			virtual core::position2d<f32> getRelativePosition()
  			{
  				updateCursorPos();
  				return core::position2d<f32>(CursorPos.X / (f32)Device->CreationParams.WindowSize.Width,
  					CursorPos.Y / (f32)Device->CreationParams.WindowSize.Height);
  			}
  
  			virtual void setReferenceRect(core::rect<s32>* rect=0)
  			{
  			}
  
  		private:
  
  			void updateCursorPos()
  			{
  			}
  
  			core::position2d<s32> CursorPos;
  			CIrrDeviceFB* Device;
  			bool IsVisible;
  			bool Null;
  		};
  
  		friend class CCursorControl;
  
  		int Framebuffer;
  		int EventDevice;
  		int KeyboardDevice;
  		struct fb_fix_screeninfo fbfixscreeninfo;
  		struct fb_var_screeninfo fbscreeninfo;
  		struct fb_var_screeninfo oldscreeninfo;
  		long KeyboardMode;
  		u8* SoftwareImage;
  
  		u32 Pitch;
  		video::ECOLOR_FORMAT FBColorFormat;
  		bool Close;
  
  		struct SKeyMap
  		{
  			SKeyMap() {}
  			SKeyMap(s32 x11, s32 win32)
  				: X11Key(x11), Win32Key(win32)
  			{
  			}
  
  			KeySym X11Key;
  			s32 Win32Key;
  
  			bool operator<(const SKeyMap& o) const
  			{
  				return X11Key<o.X11Key;
  			}
  		};
  
  		core::array<SKeyMap> KeyMap;
  	};
  
  
  } // end namespace irr
  
  #endif // _IRR_USE_FB_DEVICE_
  #endif // __C_IRR_DEVICE_FB_H_INCLUDED__
  
  