DirectWindow.h

/*
 * Copyright 2001-2008 Haiku, Inc. All rights reserved.
 * Distributed under the terms of the MIT License.
 *
 * Authors:
 *		Stefano Ceccherini <stefano.ceccherini@gmail.com>
 */
#ifndef	_DIRECT_WINDOW_H
#define	_DIRECT_WINDOW_H


#include <Region.h>
#include <Window.h>


enum direct_buffer_state {
	B_DIRECT_MODE_MASK	= 15,

	B_DIRECT_START		= 0,
	B_DIRECT_STOP		= 1,
	B_DIRECT_MODIFY		= 2,
	
	B_CLIPPING_MODIFIED = 16,
	B_BUFFER_RESIZED 	= 32,
	B_BUFFER_MOVED 		= 64,
	B_BUFFER_RESET	 	= 128
};


enum direct_driver_state {
	B_DRIVER_CHANGED	= 0x0001,
	B_MODE_CHANGED		= 0x0002
};


typedef struct {
	direct_buffer_state	buffer_state;
	direct_driver_state	driver_state;
	void				*bits;
	void				*pci_bits;
	int32				bytes_per_row;
	uint32				bits_per_pixel;
	color_space			pixel_format;
	buffer_layout		layout;
	buffer_orientation	orientation;
	uint32				_reserved[9];
	uint32				_dd_type_;
	uint32				_dd_token_;
	uint32				clip_list_count;
	clipping_rect		window_bounds;
	clipping_rect		clip_bounds;
	clipping_rect		clip_list[1];
} direct_buffer_info;


class BDirectWindow : public BWindow {
public:
								BDirectWindow(BRect frame, const char* title,
									window_type type, uint32 flags,
									uint32 workspace = B_CURRENT_WORKSPACE);
								BDirectWindow(BRect frame, const char* title,
									window_look look, window_feel feel,
									uint32 flags,
									uint32 workspace = B_CURRENT_WORKSPACE);
	virtual						~BDirectWindow();

	static	BArchivable*		Instantiate(BMessage* data);
	virtual	status_t			Archive(BMessage* data,
									bool deep = true) const;

	virtual	void				Quit();
	virtual	void				DispatchMessage(BMessage* message,
									BHandler* handler);
	virtual	void				MessageReceived(BMessage* message);
	virtual	void				FrameMoved(BPoint newPosition);
	virtual	void				WorkspacesChanged(uint32 oldWorkspaces,
									uint32 newWorkspaces);
	virtual	void				WorkspaceActivated(int32 workspaceIndex,
									bool state);
	virtual	void				FrameResized(float newWidth, float newHeight);
	virtual	void				Minimize(bool minimize);
	virtual	void				Zoom(BPoint recPosition, float recWidth,
									float recHeight);
	virtual	void				ScreenChanged(BRect screenFrame,
									color_space depth);
	virtual	void				MenusBeginning();
	virtual	void				MenusEnded();
	virtual	void				WindowActivated(bool state);
	virtual	void				Show();
	virtual	void				Hide();
	virtual	BHandler*			ResolveSpecifier(BMessage* message,
									int32 index, BMessage* specifier,
									int32 what, const char* property);
	virtual	status_t			GetSupportedSuites(BMessage* data);
	virtual	status_t			Perform(perform_code code, void* arg);

private:
	virtual	void				task_looper();
	virtual	BMessage*			ConvertToMessage(void* raw, int32 code);

	public:	
	virtual	void				DirectConnected(direct_buffer_info* info);
			status_t			GetClippingRegion(BRegion* region,
									BPoint* origin = NULL) const;
			status_t			SetFullScreen(bool enable);
			bool				IsFullScreen() const;

	static	bool				SupportsWindowMode(
									screen_id id = B_MAIN_SCREEN_ID);

private:
	typedef	BWindow				inherited;

	virtual	void				_ReservedDirectWindow1();
	virtual	void				_ReservedDirectWindow2();
	virtual	void				_ReservedDirectWindow3();
	virtual	void				_ReservedDirectWindow4();

								BDirectWindow();
								BDirectWindow(BDirectWindow& other);
			BDirectWindow&		operator=(BDirectWindow& other);

	static	int32				_daemon_thread(void* arg);
			int32				_DirectDaemon();
			bool				_LockDirect() const;
			void				_UnlockDirect() const;

			void				_InitData();
			void				_DisposeData();

			bool				fDaemonKiller;
			bool				fConnectionEnable;
			bool				fIsFullScreen;
			bool				_unused;
			bool				fInDirectConnect;

			int32				fDirectLock;
			sem_id				fDirectSem;
			uint32				fDirectLockCount;
			thread_id			fDirectLockOwner;
			char*				fDirectLockStack;

			sem_id				fDisableSem;
			sem_id				fDisableSemAck;

			uint32				fInitStatus;
			uint32				fInfoAreaSize;

			uint32				_reserved[2];

			area_id				fClonedClippingArea;
			area_id				fSourceClippingArea;
			thread_id			fDirectDaemonId;
			direct_buffer_info*	fBufferDesc;

			uint32				_more_reserved_[17];
};


#endif	// _DIRECT_WINDOW_H