edit.c

ucgui的3.98版本的源代码

/*********************************************************************
*
*       Exported routines:  Callback
*
**********************************************************************
*/
/*********************************************************************
*
*       EDIT_Callback
*/
void EDIT_Callback (WM_MESSAGE * pMsg) {
  int IsEnabled;
  EDIT_Handle hObj;
  EDIT_Obj*   pObj;
  hObj = (EDIT_Handle) pMsg->hWin;       
  pObj = (EDIT_Obj *)GUI_ALLOC_h2p(hObj); /* Don't use use WIDGET_H2P because WIDGET_INIT_ID() has not be called at this point */
  IsEnabled = WM__IsEnabled(hObj);
  /* Let widget handle the standard messages */
  if (WIDGET_HandleActive(hObj, pMsg) == 0) {
    return;
  }
  switch (pMsg->MsgId) {
  case WM_TOUCH:
    _OnTouch(hObj, pObj, pMsg);
    break;
  case WM_PAINT:
    GUI_DEBUG_LOG("EDIT: _Callback(WM_PAINT)\n");
    _Paint(pObj, hObj);
    return;
  case WM_DELETE:
    GUI_DEBUG_LOG("EDIT: _Callback(WM_DELETE)\n");
    _Delete(pObj);
    break;       /* No return here ... WM_DefaultProc needs to be called */
  case WM_KEY:
    if (IsEnabled) {
      if ( ((const WM_KEY_INFO*)(pMsg->Data.p))->PressedCnt >0) {
        int Key = ((const WM_KEY_INFO*)(pMsg->Data.p))->Key;
        switch (Key) {
          case GUI_KEY_ENTER:
          case GUI_KEY_ESCAPE:
          case GUI_KEY_TAB:
          case GUI_KEY_BACKTAB:
            break;                    /* Send to parent by not doing anything */
          default:
            EDIT_AddKey(hObj, Key);
            return;
        }
      }
    }
    break;
  }
  WM_DefaultProc(pMsg);
}

/*********************************************************************
*
*       Exported routines:  Create
*
**********************************************************************
*/
/*********************************************************************
*
*       EDIT_CreateEx
*/
EDIT_Handle EDIT_CreateEx(int x0, int y0, int xsize, int ysize, WM_HWIN hParent, int WinFlags, int ExFlags,
                          int Id, int MaxLen)
{
  EDIT_Handle hObj;
  GUI_USE_PARA(ExFlags);
  WM_LOCK();
  /* Alloc memory for obj */
  WinFlags |= WM_CF_LATE_CLIP;    /* Always use late clipping since widget is optimized for it. */
  hObj = WM_CreateWindowAsChild(x0, y0, xsize, ysize, hParent, WM_CF_SHOW | WinFlags, EDIT_Callback,
                                sizeof(EDIT_Obj) - sizeof(WM_Obj));
  if (hObj) {
    EDIT_Obj* pObj;
    pObj = (EDIT_Obj *)GUI_ALLOC_h2p(hObj); /* Don't use use WIDGET_H2P because WIDGET_INIT_ID() has not be called at this point */
    /* init widget specific variables */
    WIDGET__Init(&pObj->Widget, Id, WIDGET_STATE_FOCUSSABLE);
    /* init member variables */
    EDIT_INIT_ID(pObj);
    pObj->Props         = EDIT__DefaultProps;
    pObj->XSizeCursor   = 1;
    pObj->MaxLen        = (MaxLen == 0) ? 8 : MaxLen;
    pObj->BufferSize    = 0;
    pObj->hpText        = 0;
    if (_IncrementBuffer(pObj, pObj->MaxLen + 1) == 0) {
      GUI_DEBUG_ERROROUT("EDIT_Create failed to alloc buffer");
      EDIT_Delete(hObj);
      hObj = 0;
    }
  }
  WM_UNLOCK();
  return hObj;
}

/*********************************************************************
*
*       Exported routines:  Various methods
*
**********************************************************************
*/
/*********************************************************************
*
*       EDIT_SetCursorAtPixel
*/
void EDIT_SetCursorAtPixel(EDIT_Handle hObj, int xPos) {
  if (hObj) {
    EDIT_Obj* pObj;
    WM_LOCK();
    pObj = EDIT_H2P(hObj);
    if (pObj->hpText) {    
      const GUI_FONT GUI_UNI_PTR *pOldFont;
      int xSize, TextWidth, NumChars;
      const char GUI_UNI_PTR * pText;
      pText = (char*) GUI_ALLOC_h2p(pObj->hpText);
      pOldFont = GUI_SetFont(pObj->Props.pFont);
      xSize = WM_GetWindowSizeX(hObj);
      TextWidth = GUI_GetStringDistX(pText);
      switch (pObj->Props.Align & GUI_TA_HORIZONTAL) {
      case GUI_TA_HCENTER:
        xPos -= (xSize - TextWidth + 1) / 2;
        break;
      case GUI_TA_RIGHT:
        xPos -= xSize - TextWidth - (pObj->Props.Border + EDIT_XOFF);
        break;
      default:
        xPos -= (pObj->Props.Border + EDIT_XOFF) + pObj->Widget.pEffect->EffectSize;
      }
      NumChars = GUI__GetNumChars(pText);
      if (xPos < 0) {
        EDIT__SetCursorPos(pObj, 0);
      } else if (xPos > TextWidth) {
        EDIT__SetCursorPos(pObj, NumChars);
      } else {
        EDIT__SetCursorPos(pObj, GUI__GetCursorPosChar(pText, xPos, NumChars));
      }
      GUI_SetFont(pOldFont);
      EDIT_Invalidate(hObj);
    }
    WM_UNLOCK();
  }
}

/*********************************************************************
*
*       EDIT_AddKey
*/
void EDIT_AddKey(EDIT_Handle hObj, int Key) {
  if (hObj) {
    EDIT_Obj* pObj;
    WM_LOCK();
    pObj = EDIT_H2P(hObj);
    if (pObj) {
      if (pObj->pfAddKeyEx) {
        pObj->pfAddKeyEx(hObj, Key);
      } else {
        switch (Key) {
        case GUI_KEY_UP:
          if (pObj->hpText) {
            char* pText;
            U16 Char;
            pText  = (char*) GUI_ALLOC_h2p(pObj->hpText);
            pText += GUI_UC__NumChars2NumBytes(pText, pObj->CursorPos);
            Char   = GUI_UC_GetCharCode(pText);
            if (Char < 0x7f) {  
              *pText = Char + 1;
              WM_NotifyParent(hObj, WM_NOTIFICATION_VALUE_CHANGED);
            }
          }
          break;
        case GUI_KEY_DOWN:
          if (pObj->hpText) {
            char* pText;
            U16 Char;
            pText  = (char*) GUI_ALLOC_h2p(pObj->hpText);
            pText += GUI_UC__NumChars2NumBytes(pText, pObj->CursorPos);
            Char   = GUI_UC_GetCharCode(pText);
            if (Char > 0x20) {  
              *pText = Char - 1;
              WM_NotifyParent(hObj, WM_NOTIFICATION_VALUE_CHANGED);
            }
          }
          break;
        case GUI_KEY_RIGHT:
          EDIT__SetCursorPos(pObj, pObj->CursorPos + 1);
          break;
        case GUI_KEY_LEFT:
          EDIT__SetCursorPos(pObj, pObj->CursorPos - 1);
          break;
        case GUI_KEY_BACKSPACE:
          EDIT__SetCursorPos(pObj, pObj->CursorPos - 1);
          _DeleteChar(hObj, pObj);
          break;
        case GUI_KEY_DELETE:
          _DeleteChar(hObj, pObj);
          break;
        case GUI_KEY_INSERT:
          if (pObj->EditMode == GUI_EDIT_MODE_OVERWRITE) {
            pObj->EditMode = GUI_EDIT_MODE_INSERT;
          } else {
            pObj->EditMode = GUI_EDIT_MODE_OVERWRITE;
            EDIT__SetCursorPos(pObj, pObj->CursorPos);
          }
          break;
        default:
          if (Key >= 0x20) {
            if (pObj->EditMode != GUI_EDIT_MODE_INSERT) {
              _DeleteChar(hObj, pObj);
            }
            if (_InsertChar(hObj, pObj, Key)) {
              EDIT__SetCursorPos(pObj, pObj->CursorPos + 1);
            }
          }
        }
      }
      EDIT_Invalidate(hObj);
    }
    WM_UNLOCK();
  }
}

/*********************************************************************
*
*       EDIT_SetFont
*/
void EDIT_SetFont(EDIT_Handle hObj, const GUI_FONT GUI_UNI_PTR * pfont) {
  EDIT_Obj* pObj;
  if (hObj == 0)
    return;
  WM_LOCK();
  pObj = EDIT_H2P(hObj);
  if (pObj) {
    pObj->Props.pFont = pfont;
    EDIT_Invalidate(hObj);
  }
  WM_UNLOCK();
}

/*********************************************************************
*
*       EDIT_SetBkColor
*/
void EDIT_SetBkColor(EDIT_Handle hObj, unsigned int Index, GUI_COLOR color) {
  EDIT_Obj* pObj;
  if (hObj == 0)
    return;
  WM_LOCK();
  pObj = EDIT_H2P(hObj);
  if (pObj) {
    if (Index < GUI_COUNTOF(pObj->Props.aBkColor)) {
      pObj->Props.aBkColor[Index] = color;
      EDIT_Invalidate(hObj);
    }
  }
  WM_UNLOCK();
}

/*********************************************************************
*
*       EDIT_SetTextColor
*/
void EDIT_SetTextColor(EDIT_Handle hObj, unsigned int Index, GUI_COLOR color) {
  EDIT_Obj* pObj;
  if (hObj == 0)
    return;
  WM_LOCK();
  pObj = EDIT_H2P(hObj);
  if (pObj) {
    if (Index < GUI_COUNTOF(pObj->Props.aTextColor)) {
      pObj->Props.aTextColor[Index] = color;
      EDIT_Invalidate(hObj);
    }
  }
  WM_UNLOCK();
}

/*********************************************************************
*
*       EDIT_SetText
*/
void EDIT_SetText(EDIT_Handle hObj, const char* s) {
  if (hObj) {
    EDIT_Obj* pObj;
    WM_LOCK();
    pObj = EDIT_H2P(hObj);
    if (s) {
      int NumBytesNew, NumBytesOld = 0;
      int NumCharsNew;
      if (pObj->hpText) {
        char* pText;
        pText       = (char*) GUI_ALLOC_h2p(pObj->hpText);
        NumBytesOld = strlen(pText) + 1;
      }
      NumCharsNew = GUI__GetNumChars(s);
      if (NumCharsNew > pObj->MaxLen) {
        NumCharsNew = pObj->MaxLen;
      }
      NumBytesNew = GUI_UC__NumChars2NumBytes(s, NumCharsNew) + 1;
      if (_IsSpaceInBuffer(pObj, NumBytesNew - NumBytesOld)) {
        char* pText;
        pText = (char*) GUI_ALLOC_h2p(pObj->hpText);
        memcpy(pText, s, NumBytesNew);
        pObj->CursorPos = NumCharsNew;
        if (pObj->CursorPos == pObj->MaxLen) {
          if (pObj->EditMode == GUI_EDIT_MODE_OVERWRITE) {
            pObj->CursorPos--;
          }
        }
      }
    } else {
      GUI_ALLOC_FreePtr(&pObj->hpText);
      pObj->BufferSize = 0;
      pObj->CursorPos  = 0;
    }
    EDIT_Invalidate(hObj);
    WM_UNLOCK();
  }
}

/*********************************************************************
*
*       EDIT_GetText
*/
void EDIT_GetText(EDIT_Handle hObj, char* sDest, int MaxLen) {
  if (sDest) {
    *sDest = 0;
    if (hObj) {
      EDIT_Obj* pObj;
      WM_LOCK();
      pObj = EDIT_H2P(hObj);
      if (pObj->hpText) {
        char* pText;
        int NumChars, NumBytes;
        pText = (char*) GUI_ALLOC_h2p(pObj->hpText);
        NumChars = GUI__GetNumChars(pText);
        if (NumChars > MaxLen) {
          NumChars = MaxLen;
        }
        NumBytes = GUI_UC__NumChars2NumBytes(pText, NumChars);
        memcpy(sDest, pText, NumBytes);
        *(sDest + NumBytes) = 0;
      }
      WM_UNLOCK();
    }
  }
}

/*********************************************************************
*
*       EDIT_GetValue
*/
I32  EDIT_GetValue(EDIT_Handle hObj) {
  EDIT_Obj* pObj;
  I32 r = 0;
  if (hObj) {
    WM_LOCK();
    pObj = EDIT_H2P(hObj);
    r = pObj->CurrentValue;
    WM_UNLOCK();
  }
  return r;
}

/*********************************************************************
*
*       EDIT_SetValue
*/
void EDIT_SetValue(EDIT_Handle hObj, I32 Value) {
  _SetValue(hObj, Value, 0);
}

/*********************************************************************
*
*       EDIT_SetMaxLen
*/
void EDIT_SetMaxLen(EDIT_Handle  hObj, int MaxLen) {
  if (hObj) {
    EDIT_Obj* pObj;
    WM_LOCK();
    pObj = EDIT_H2P(hObj);
    if (MaxLen != pObj->MaxLen) {
      if (MaxLen < pObj->MaxLen) {
        if (pObj->hpText) {
          char* pText;
          int   NumChars;
          pText    = (char*) GUI_ALLOC_h2p(pObj->hpText);
          NumChars = GUI__GetNumChars(pText);
          if (NumChars > MaxLen) {
            int NumBytes;
            NumBytes = GUI_UC__NumChars2NumBytes(pText, MaxLen);
            *(pText + NumBytes) = 0;
          }
        }
      }
      _IncrementBuffer(pObj, MaxLen - pObj->BufferSize + 1);
      pObj->MaxLen = MaxLen;
      EDIT_Invalidate(hObj);
    }
    WM_UNLOCK();
  }
}

/*********************************************************************
*
*       EDIT_SetTextAlign
*/
void EDIT_SetTextAlign(EDIT_Handle hObj, int Align) {
  EDIT_Obj* pObj;
  if (hObj == 0)
    return;
  WM_LOCK();
  pObj = EDIT_H2P(hObj);
  if (pObj) {
    pObj->Props.Align = Align;
    EDIT_Invalidate(hObj);
  }
  WM_UNLOCK();
}

#else  /* avoid empty object files */

void Edit_C(void) {}

#endif