xvfb.h

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/*
 * $Id: xvfb.h 7682 2007-09-26 03:27:02Z wangxuguang $
 * 
 *             MiniGUI for Linux/uClinux, eCos, uC/OS-II, VxWorks, 
 *                     pSOS, ThreadX, NuCleus, OSE, and Win32.
 *
 *             Copyright (C) 2002-2009 Feynman Software.
 *             Copyright (C) 1998-2002 Wei Yongming.
 */

#ifndef _MGUI_XVFB_H
  #define _MGUI_XVFB_H


#ifdef __cplusplus
extern "C" {
#endif  /*__cplusplus*/

typedef struct _XVFBHeader {

    unsigned int info_size;

    int width;

    int height;

    int depth;

    Uint8  MSBLeft;

    Uint32 Rmask;
 
    Uint32 Gmask;

    Uint32 Bmask;

    Uint32 Amask;

    int pitch;

    int dirty;   

    int dirty_rc_l;
    int dirty_rc_t;
    int dirty_rc_r;
    int dirty_rc_b;

    int palette_changed;  

    int palette_offset;

    int fb_offset;
} XVFBHeader;


typedef struct _XVFBKEYDATA
{
    unsigned short key_code;

    unsigned short key_state;
} XVFBKEYDATA;

typedef struct _XVFBMOUSEDATA
{
    unsigned short x;
    
    unsigned short y;

    unsigned short btn;
} XVFBMOUSEDATA;


typedef struct _XVFBEVENT
{
    int event_type;

    union {
        XVFBKEYDATA kb_data;
        XVFBMOUSEDATA mouse_data;
    };
} XVFBEVENT;


typedef struct _XVFBPalEntry {
    unsigned char r;
    unsigned char g;
    unsigned char b;
    unsigned char a;
} XVFBPalEntry;


extern MG_EXPORT XVFBHeader* __mg_rtos_xvfb_header;

extern MG_EXPORT void* __mg_rtos_xvfb_event_buffer;
MG_EXPORT XVFBHeader* GUIAPI xVFBAllocVirtualFrameBuffer (int width, int height, int depth,
        Uint32 Rmask, Uint32 Gmask, Uint32 Bmask, Uint32 Amask, BOOL MSBLeft);

MG_EXPORT void GUIAPI xVFBFreeVirtualFrameBuffer (XVFBHeader* buf);

MG_EXPORT void* GUIAPI xVFBCreateEventBuffer (int nr_events);


MG_EXPORT void GUIAPI xVFBDestroyEventBuffer (void* event_buf);

MG_EXPORT int GUIAPI xVFBNotifyNewEvent (const void* xvfb_event_buffer, XVFBEVENT* event);


#ifdef __cplusplus
}
#endif

#endif