wm.h

在ucos上实现了图形用户接口GUI；值得一看

/*
*********************************************************************************************************
*                                                uC/GUI
*                        Universal graphic software for embedded applications
*
*                       (c) Copyright 2002, Micrium Inc., Weston, FL
*                       (c) Copyright 2002, SEGGER Microcontroller Systeme GmbH
*
*              礐/GUI is protected by international copyright laws. Knowledge of the
*              source code may not be used to write a similar product. This file may
*              only be used in accordance with a license and should not be redistributed
*              in any way. We appreciate your understanding and fairness.
*
----------------------------------------------------------------------
File        : WM.H
Purpose     : Windows manager include
----------------------------------------------------------------------
*/

#ifndef WM_H            /* Make sure we only include it once */
#ifndef GUI_H
  #include "GUI.H"      /* Needed because of typedefs only */
#endif

#ifndef WM_H		        /* Make sure circular reference do not lead
                           to multiple-inclusion problem */
#define WM_H

/* Make sure we actually have configured windows. If we have not,
  there is no point for a windows manager and it will therefor not
  generate any code !
*/

#if GUI_WINSUPPORT

/*
      *************************************************************
      *                                                           *
      *                 Defaults for configuration switches       *
      *                                                           *
      *************************************************************
*/

#ifndef WM_ASSERT
  #define WM_ASSERT(expr) GUI_DEBUG_ASSERT(expr)
#endif

#ifndef WM_RESULT
  #define WM_RESULT void
#endif

#ifndef WM_SUPPORT_TOUCH
  #define WM_SUPPORT_TOUCH        GUI_SUPPORT_TOUCH
#endif

#ifndef WM_SUPPORT_OBSTRUCT
  #define WM_SUPPORT_OBSTRUCT 1
#endif

#ifndef WM_COMPATIBLE_MODE
  #define WM_COMPATIBLE_MODE 1
#endif

/*
      *************************************************************
      *                                                           *
      *               Configuration check                         *
      *                                                           *
      *************************************************************
*/

/*
      *************************************************************
      *                                                           *
      *               Locking macros                              *
      *                                                           *
      *************************************************************
  For performance reasons, the windows manager user the same locking mechanisms
  as the GUI layer. The advantage is that wiht a single call to GUI_LOCK both
  the graphic level and the WM level are covered.
*/

#define WM_LOCK()   GUI_LOCK()
#define WM_UNLOCK() GUI_UNLOCK()

/* Memory allocation locking is seperate from Windows managers in
   order to be able to use different resource semaphores. Per
	 default, the same one is used.
*/

#ifndef WMALLOC_LOCK
  #define WMALLOC_LOCK()   WM_LOCK()
  #define WMALLOC_UNLOCK() WM_UNLOCK()
#endif

/************************************************************
*
*          Public data (just for inline functions
*                       in form of macros)
*
*************************************************************
*/

extern U8 WM_IsActive;


/************************************************************
*
*          Data types
*
*************************************************************
*/

typedef struct {
  int Key, PressedCnt;
} WM_KEY_INFO;

typedef struct {
  int NumItems, v, PageSize;
} WM_SCROLL_STATE;


/*
      *************************************************************
      *                                                           *
      *               Function replacement macros                 *
      *                                                           *
      *************************************************************
*/

#define WM_GetIsActive()          WM_IsActive
#define WM_GetNumWindows()        WM__NumWindows
#define WM_GetNumInvalidWindows() WM__NumInvalidWindows

/*********************************************************************
*
*               Messages Ids

The following is the list of windows messages.
*/

#ifndef _WINUSER_              /* Conflicts with winuser.h ... */

#define WM_PAINT               1 /* Repaint window (because content is (partially) invalid */
#define WM_COVER               2 /* Window has been partially covered. Normally, there is no reaction to this event. */
#define WM_CREATE              3 /* The first message received, right after client has actually been created */
#define WM_DELETE              4 /* Delete (Destroy) command: This tells the client to free its data strutures since the window
                                    it is associates with no longer exists.*/
#define WM_SIZE                6 /* Is sent to a window after its size has changed */
#define WM_MOVE                7 /* window has been moved */
#define WM_SHOW                8 /* windows has just received the show command */
#define WM_HIDE                9 /* windows has just received the hide command */
#define WM_FGND               10 /* window has been made top of window stack */
#define WM_BGND               11 /* window has just been put to bottom of stack */
#define WM_TOUCH              12 /* touch screen message */
#define WM_KEY                13 /* Key has been pressed */

#define WM_GETCLIENTRECT      100      /* get client rectangle in window coordinates*/
#define WM_GETCLIENTRECT_ABS  101      /* get client rectangle in absolute coordinates*/
#define WM_GET_INSIDE_RECT    102      /* get inside rectangle: client rectangle minus pixels lost to effect */
#define WM_GETORG             104
#define WM_GET_ID             105      /* Get id of widget */
#define WM_GET_CLIENT_WINDOW  106      /* Get window handle of client window. Default is the same as window */
#define WM_CAPTURE_RELEASED   107      /* Let window know that mouse capture is over */

#define WM_INIT_DIALOG        109      /* Inform dialog that it is ready for init */
#define WM_SET_FOCUS          110      /* Inform window that it has gotten or lost the focus */
#define WM_GET_ACCEPT_FOCUS   111      /* Find out if window can accept the focus */
#define WM_GET_FOCUSSED_CHILD 112      /* Which child currently has the focus */
#define WM_GET_HAS_FOCUS      113      /* Does this window have the focus ? */
#define WM_GET_BKCOLOR        114      /* Return back ground color (only frame window and similar) */
#define WM_SET_ENABLE         115      /* Enable or disable widget */
#define WM_GET_SCROLL_STATE   116      /* Query state of scroll bar */

#define WM_ADD_SCROLLBAR      118      /* Scroller added */
#define WM_SET_SCROLL_STATE   119      /* Set scroll info ... only effective for scrollbars */

#define WM_NOTIFY_CHILD_HAS_FOCUS 120
#define WM_NOTIFY_PARENT      121

#define WM_USER              200      /* Reserved for user messages */

#endif


/*********************************************************************
*
*               Notification codes

The following is the list of notification codes send
with the WM_NOTIFY message
*/
#define WM_NOTIFICATION_CLICKED       1
#define WM_NOTIFICATION_RELEASED      2
#define WM_NOTIFICATION_MOVED_OUT     3
#define WM_NOTIFICATION_SEL_CHANGED   4
#define WM_NOTIFICATION_VALUE_CHANGED 5

/*
        *******************************************************************
        *                                                                 *
        *              Memory management                                  *
        *                                                                 *
        *******************************************************************
*/

#define WM_FREE(h)     GUI_ALLOC_FREE(h)
#define WM_ALLOC(h)    GUI_ALLOC_ALLOC(h)
#define WM_HWIN        GUI_HWIN
#define WM_HWIN_NULL   GUI_HWIN_NULL
#define WM_HMEM        GUI_HMEM
#define WM_HMEM2Ptr    GUI_ALLOC_H2P
#define WM_FREEPTR(ph) GUI_ALLOC_FreePtr(ph)
#define WM_HMEM_NULL   GUI_HMEM_NULL
#define WM_HBKWIN      1                         /* Handle of background window */

/*
        *******************************************************************
        *                                                                 *
        *           Windows manager types                                 *
        *                                                                 *
        *******************************************************************
*/

/* Windows create flags. These flags can be passed to the create window
   function as flag-parameter. The flags are combinable using the
   binary or operator.
*/

#define WM_CF_HASTRANS   (1<<0)  /* Has transparency. Needs to be defined
                                    for windows which do not fill the entire
                                    section of their (client) rectangle. */
#define WM_CF_HIDE       (0<<1)  /* Hide window after creation (default !) */
#define WM_CF_SHOW       (1<<1)  /* Show window after creation */
#define WM_CF_FGND       (0<<2)  /* Put window in foreground after creation
                                    (default !) */
#define WM_CF_BGND       (1<<2)  /* Put window in background after creation */
#define WM_CF_MEMDEV     (1<<3)  /* Use memory device for redraws */
#define WM_CF_STAYONTOP  (1<<4)  /* Stay on top */
#define WM_CF_ACTIVATE   (1<<5)  /* If automatic activation upon creation of
                                    window is desired */

typedef struct {
  int MsgId;            /* type of message */
  WM_HWIN hWin;         /* Destination window */
  WM_HWIN hWinSrc;      /* Source window  */
  union {
    void* p;            /* Some messages need more info ... */
    int v;
    GUI_COLOR Color;
  } Data;
} WM_MESSAGE;

typedef void WM_CALLBACK( WM_MESSAGE* pMsg);

typedef struct WM_OBJ_struct WM_Obj;
struct WM_OBJ_struct {
  GUI_RECT Rect;        /* outer dimensions of window */
  GUI_RECT InvalidRect; /* invalid rectangle */
  WM_CALLBACK* cb;      /* ptr to notification callback */
  WM_HWIN hNextLin;     /* Next window in linear list */
  WM_HWIN hParent, hFirstChild, hNext;
  U16 Status;	          /* Some status flags */
};

/*
**********************************************************************
*
*              General control routines
*
**********************************************************************
*/