/***********************************************************************************************************                                                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        : EditHexPurpose     : Edit hexadecimal values---------------------------END-OF-HEADER------------------------------*/#include <string.h>#include "EDIT.h"#include "GUIDebug.h"#include "GUI_Protected.h"#include "EDIT_Private.h"#if GUI_WINSUPPORT/***********************************************************************        Defaults for config switches************************************************************************/#ifndef EDIT_HEX_DIGITONLY  #define EDIT_HEX_DIGITONLY     0#endif/***********************************************************************             Helpers************************************************************************/static int _HexChar2Int(int Char) {  if ((Char >= '0') && (Char <= '9'))    return Char - '0';  Char &= ~0x20;  if ((Char >= 'A') && (Char <= 'F'))    return Char - 'A' + 10;  return -1;}static void _UpdateBuffer(EDIT_Obj* pObj) {  char * s = (char*) WM_HMEM2Ptr(pObj->hpText);  GUI_AddHex(pObj->CurrentValue, pObj->MaxLen, &s);}static void _EditHex(int Nibble, EDIT_Obj* pObj, EDIT_Handle hObj) {  int Pos = pObj->MaxLen - pObj->CursorPos - 1;   /* Nibble position */  U32 AndMask = ~(15     << (Pos << 2));  U32 OrMask  =   Nibble << (Pos << 2);  I32 Result  = pObj->CurrentValue & AndMask;  Result     |= OrMask;  EDIT_SetValue(hObj, Result);}#if EDIT_HEX_DIGITONLY  static U8 _GetCurrentNibble(EDIT_Obj* pObj) {    int Pos = pObj->MaxLen - pObj->CursorPos - 1;   /* Nibble position */    U32 AndMask = 0xf << (Pos << 2);    U8 Nibble = (pObj->CurrentValue & AndMask) >> (Pos << 2);    return Nibble;  }#endifstatic int _GetNumDigits(U32 Value) {  int Ret;  for (Ret = 0; Value; Value >>= 4, Ret++);  return Ret;}static void _AddPosition(EDIT_Obj* pObj, EDIT_Handle hObj, int Sign) {  int Pos;  U32 v;  v = 1;  Pos = pObj->MaxLen - pObj->CursorPos-1;  while (Pos--) {    v <<= 4;  }  if (Sign <0)    v = ~v;  EDIT_SetValue(hObj, pObj->CurrentValue + v);}/***********************************************************************             Handle input************************************************************************/static void AddKeyHex(EDIT_Obj* pObj, EDIT_Handle hObj, int Key) {  if (pObj) {    switch (Key) {      #if EDIT_HEX_DIGITONLY      case GUI_KEY_UP:        {          int Nibble = (_GetCurrentNibble(pObj) + 1) & 15;          _EditHex(Nibble, pObj, hObj);        }        break;      case GUI_KEY_DOWN:        {          int Nibble = (_GetCurrentNibble(pObj) + 1) & 15;          _EditHex(Nibble, pObj, hObj);        }        break;      #else      case GUI_KEY_UP:        _AddPosition(pObj, hObj, 1);        break;      case GUI_KEY_DOWN:        _AddPosition(pObj, hObj, -1);        break;      #endif      case GUI_KEY_RIGHT:        if (pObj->CursorPos < (pObj->MaxLen - 1))          pObj->CursorPos++;        break;      case GUI_KEY_LEFT:        if (pObj->CursorPos > 0)          pObj->CursorPos--;        break;      default:        {          int Nibble = _HexChar2Int(Key);          if (Nibble >= 0) {            _EditHex(Nibble, pObj, hObj);            if (pObj->CursorPos < (pObj->MaxLen - 1))              pObj->CursorPos++;          }        }        break;    }  }  _UpdateBuffer(pObj);}/***********************************************************************             Exported routines************************************************************************/void EDIT_SetHexMode(EDIT_Handle hEdit, U32 Value, U32 Min, U32 Max) {  EDIT_Obj* pObj;  int MaxLen;  WM_LOCK();  pObj = EDIT_H2P(hEdit);  pObj->pfAddKeyEx = AddKeyHex;  pObj->CurrentValue = Value;  pObj->CursorPos = 0;  MaxLen = pObj->MaxLen;  if (MaxLen <= 0 ) {    MaxLen = _GetNumDigits(Max);  }  if (MaxLen > 8) {    MaxLen = 8;  }  if (MaxLen != pObj->MaxLen) {    EDIT_SetMaxLen(hEdit, MaxLen);  }  pObj->Min = Min;  pObj->Max = Max;  pObj->EditMode = GUI_EDIT_MODE_OVERWRITE;  _UpdateBuffer(pObj);  WM_UNLOCK();}#else  /* avoid empty object files */void EditHex_C(void);#endif /* GUI_WINSUPPORT */