haiku/headers/private/interface/PrivateScreen.h

/*
 * Copyright 2002-2009, Haiku Inc.
 * Distributed under the terms of the MIT License.
 *
 * Authors:
 *		Stefano Ceccherini (burton666@libero.it)
 *		Axel Dörfler, axeld@pinc-software.de
 */
#ifndef _PRIVATE_SCREEN_H_
#define _PRIVATE_SCREEN_H_


#include <Accelerant.h>
#include <GraphicsDefs.h>
#include <ObjectList.h>
#include <Rect.h>


struct color_map;
class BBitmap;
class BApplication;
class BWindow;


#define B_CURRENT_WORKSPACE_INDEX	(~0L)


namespace BPrivate {

class BPrivateScreen {
public:
	// Constructor and destructor are private. Use the static methods
	// Get() and Put() instead.

	static	BPrivateScreen*		Get(BWindow* window);
	static	BPrivateScreen*		Get(int32 id);
	static	void				Put(BPrivateScreen* screen);

	static	BPrivateScreen*		GetNext(BPrivateScreen* screen);

			bool				IsValid() const;
			color_space			ColorSpace();
			BRect				Frame();
			int32				ID() const { return fID; }
			status_t			GetNextID(int32& id);

			status_t			WaitForRetrace(bigtime_t timeout);

			uint8				IndexForColor(uint8 red, uint8 green,
									uint8 blue, uint8 alpha);
			rgb_color			ColorForIndex(const uint8 index);
			uint8				InvertIndex(uint8 index);

			const color_map*	ColorMap();

			status_t			GetBitmap(BBitmap** bitmap, bool drawCursor,
									BRect* bounds);
			status_t			ReadBitmap(BBitmap* bitmap, bool drawCursor,
									BRect* bounds);

			rgb_color			DesktopColor(uint32 index);
			void				SetDesktopColor(rgb_color, uint32, bool);

			status_t			ProposeMode(display_mode* target,
									const display_mode* low,
									const display_mode* high);

			status_t			GetModeList(display_mode** _modeList,
									uint32* _count);
			status_t			GetMode(uint32 workspace, display_mode* mode);
			status_t			SetMode(uint32 workspace, display_mode* mode,
									bool makeDefault);

			status_t			GetDeviceInfo(accelerant_device_info* info);
			status_t			GetMonitorInfo(monitor_info* info);
			status_t			GetPixelClockLimits(display_mode* mode,
									uint32* _low, uint32* _high);
			status_t			GetTimingConstraints(
									display_timing_constraints* constraints);

			status_t			SetDPMS(uint32 dpmsState);
			uint32				DPMSState();
			uint32				DPMSCapabilites();

			void*				BaseAddress();
			uint32				BytesPerRow();

private:
	friend class BObjectList<BPrivateScreen>;

								BPrivateScreen(int32 id);
								~BPrivateScreen();

			void				_Acquire();
			bool				_Release();

			sem_id				_RetraceSemaphore();
			status_t			_GetFrameBufferConfig(
									frame_buffer_config& config);

	static	BPrivateScreen*		_Get(int32 id, bool check);
	static	bool				_IsValid(int32 id);

private:
			int32				fID;
			int32				fReferenceCount;
			color_map*			fColorMap;
			sem_id				fRetraceSem;
			bool				fRetraceSemValid;
			bool				fOwnsColorMap;
			BRect				fFrame;
			bigtime_t			fLastUpdate;
};

}	// namespace BPrivate

#endif // _PRIVATE_SCREEN_H_