guichar.c

uCOS/II下用的图形系统源码

}

/*
************************************************************
*
*             GL/CL DispChar
*
************************************************************

*/

void GL_DispChar(U16 c) {
  /* check for control characters */
  if (c == '\n') {
    GUI_DispNextLine();
  } else {
    if (c != '\r') {
      GUI_Context.pAFont->pfDispChar(c);
    }
  }
}

#if (GUI_WINSUPPORT)
/* Note on usage of this routine:
   If at all possible, try to avoid using this, since
   every call will invoke the window manager. If possible,
   use the string routines.
*/
static void CL_DispChar(U16 c) {
  GUI_RECT r;
  WM_ADDORG(GUI_Context.DispPosX, GUI_Context.DispPosY);
  r.x1 = (r.x0 = GUI_Context.DispPosX) + GUI_GetCharDistX(c)-1;
  r.y1 = (r.y0 = GUI_Context.DispPosY) + GUI_GetFontSizeY()-1;
  WM_ITERATE_START(&r) {
    GL_DispChar(c);
    if (c != '\n')
      GUI_Context.DispPosX = r.x1 + 1;
  } WM_ITERATE_END();
  WM_SUBORG(GUI_Context.DispPosX,GUI_Context.DispPosY);
}
#endif

void GUI_DispChar(U16 c) {
  GUI_LOCK();
  #if (GUI_WINSUPPORT)
    CL_DispChar(c);
  #else
    GL_DispChar(c);
  #endif
  GUI_UNLOCK();
}



/*
************************************************************
*
*             GL/CL DispCharAt
*
************************************************************

*/

void GUI_DispCharAt(U16 c, I16P x, I16P y) {
  GUI_LOCK();
  GUI_Context.DispPosX =x;
  GUI_Context.DispPosY =y;
  #if (GUI_WINSUPPORT)
    CL_DispChar(c);
  #else
    GL_DispChar(c);
  #endif
  GUI_UNLOCK();
}



/*
************************************************************
*
*             GUI_SetFont
*
************************************************************

*/
const GUI_FONT* GUI_SetFont(const GUI_FONT* pNewFont) {
  const GUI_FONT * pOldFont = GUI_Context.pAFont;
  GUI_LOCK();
  if (pNewFont)
    GUI_Context.pAFont = pNewFont;
  GUI_UNLOCK();
  return pOldFont;
}


/*
        ************************************************************
        *                                                          *
        *             Set the write position                       *
        *                                                          *
        ************************************************************

Sets the write position. The routines routine 1 if it is clear that
the current write position is in an area outside the current window
and will therefor not be written.

*/

static char _GotoY(int y) {
  GUI_Context.DispPosY = y;
  return 0;
}

static char _GotoX(int x) {
  GUI_Context.DispPosX = x;
  return 0;
}


char GUI_GotoY(int y) {
  char r;
  GUI_LOCK();
  r = _GotoY(y);
  GUI_UNLOCK();
  return r;
}


char GUI_GotoX(int x) {
  char r;
  GUI_LOCK();
  r = _GotoX(x);
  GUI_UNLOCK();
  return r;
}

char GUI_GotoXY(int x, int y) {
  char r;
  GUI_LOCK();
  r  = GUI_GotoX(x);
  r |= GUI_GotoY(y);
  GUI_UNLOCK();
  return r;
}




/*
        ************************************************************
        *                                                          *
        *                 GUI_SetLBorder                           *
        *                                                          *
        *             Sets the left border (for carriage return)   *
        *                                                          *
        ************************************************************

*/


int GUI_SetLBorder(int x) {
  int r;
  GUI_LOCK();
  r = GUI_Context.LBorder;
  GUI_Context.LBorder = x;
  GUI_UNLOCK();
  return r;
}


/*
********************************************************
*
*                Display line
*
********************************************************
*/

void GL_DispLine(const char GUI_FAR *s, int Len, const GUI_RECT *pRect) {
  /*
    Check if we have anything to do at all ...
    If the window manager has already set the clipping rect, it does not
    make sense to due this. So it makes sense only if
    a) The window manager is not used (-> Configuration)
      or
    b) The window manager is inactive (-> Memory device active)
  */
  if (GUI_Context.pClipRect_HL) {
    if (GUI_RectsIntersect(GUI_Context.pClipRect_HL, pRect) == 0)
      return;
  }
  if (GUI_Context.pAFont->pafEncode) {
    GUI_Context.pAFont->pafEncode->pfDispLine(s, Len);
    return;
  }
#if (GUI_SUPPORT_UNICODE)
  {
    U8 c0;
    char UCActive=0;
    while (--Len >=0) {
      c0=*(U8*)s++;
      if (UCActive) {
        if (c0 == GUI_UC_ENDCHAR)
          UCActive = 0;
        else {
          U8  c1 = *(U8*)s++;
          Len--;
          GL_DispChar (GUI_DB2UC(c0, c1));
        }
      } else { /* Unicode not active */
        if (c0 == GUI_UC_STARTCHAR)
          UCActive = 1;
        else
          GL_DispChar(c0);
      }
    }
  }
#else
  {
    while (--Len >=0) {
      GL_DispChar(*(U8*)s++);
    }
  }
#endif
}

void GUI__DispLine(const char GUI_FAR *s, int Len, const GUI_RECT* pr) {
  GUI_RECT r;
  r = *pr;
  #if GUI_WINSUPPORT
  WM_ADDORG(r.x0,r.y0);
  WM_ADDORG(r.x1,r.y1);
  WM_ITERATE_START(&r) {
  #endif
     GUI_Context.DispPosX = r.x0;
     GUI_Context.DispPosY = r.y0;
  /* Do the actual drawing via routine call. */
     GL_DispLine(s, Len, &r);
  #if GUI_WINSUPPORT
  } WM_ITERATE_END();
  WM_SUBORG(GUI_Context.DispPosX, GUI_Context.DispPosY);
  #endif
}




void GUI_DispChars(U16P c, int Cnt) {
  while (Cnt-->0)
    GUI_DispChar(c);
}



void GUI_DispStringLen(const char GUI_FAR *s, int Len) {
  if (s) {
    U16 c;
    while (Len && ((c=(U16)(*s++))!=0)) {
      GUI_DispChar(c);
      Len--;
    }
  }
  while (Len--) {
    GUI_DispChar(' ');
  }
}


void GUI_DispStringAtCEOL(const char GUI_FAR *s, int x, int y) {
  GUI_DispStringAt(s,x,y);
  GUI_DispCEOL();
}

/*
	*********************************
	*                               *
	*	  Disp string                 *
  *   horizontally centered       *
	*                               *
	*********************************
*/

void GUI_DispStringHCenterAt(const char GUI_FAR *s, int x, int y) {
  int Align = GUI_SetTextAlign((GUI_Context.TextAlign&~GUI_TA_LEFT)|GUI_TA_CENTER);
  GUI_DispStringAt (s,x, y);
  GUI_SetTextAlign(Align);
}

void GUI_DispStringHCenter(const char GUI_FAR *s) {
  int Align = GUI_SetTextAlign((GUI_Context.TextAlign&~GUI_TA_HORIZONTAL)|GUI_TA_CENTER);
  GUI_DispString (s);
  GUI_SetTextAlign(Align);
}



/********************************************************************
*
*                Display String
*
*********************************************************************
*/

void GUI_DispString(const char GUI_FAR *s) {
  int xAdjust, yAdjust, xOrg;
  int FontSizeY;
  if (!s)
    return;
  GUI_LOCK();
  FontSizeY = GUI_Context.pAFont->YDist;
  xOrg = GUI_Context.DispPosX;
 /* Adjust vertical position */
  yAdjust = GUI_GetYAdjust();
  GUI_Context.DispPosY -= yAdjust;
  for (; *s; s++) {
    GUI_RECT r;
    int LineLen= GUI__GetLineLen(s,0x7fff);
    int xLineSize = GUI_GetLineDistX(s, LineLen);
  /* Check if x-position needs to be changed due to h-alignment */
    switch (GUI_Context.TextAlign & GUI_TA_HORIZONTAL) { 
    case GUI_TA_CENTER: xAdjust= xLineSize/2; break;
    case GUI_TA_RIGHT:  xAdjust= xLineSize; break;
    default:            xAdjust= 0;
    }
    r.x0 = GUI_Context.DispPosX -= xAdjust;
    r.x1 = r.x0 + xLineSize-1;    
    r.y0 = GUI_Context.DispPosY;
    r.y1 = r.y0 + FontSizeY-1;    
    GUI__DispLine(s, LineLen, &r);
    GUI_Context.DispPosY = r.y0;
    s += LineLen;
    if ((*s=='\n') || (*s=='\r')) {
      switch (GUI_Context.TextAlign & GUI_TA_HORIZONTAL) { 
      case GUI_TA_CENTER:
      case GUI_TA_RIGHT:
        GUI_Context.DispPosX = xOrg;
        break;
      default:
        GUI_Context.DispPosX = GUI_Context.LBorder;
        break;
      }
      if (*s=='\n')
        GUI_Context.DispPosY += GUI_GetFontDistY();
    } else {
      GUI_Context.DispPosX = r.x0+xLineSize;
    }
    if (*s==0)    /* end of string (last line) reached ? */
      break;
  }
  GUI_Context.DispPosY += yAdjust;
  GUI_Context.TextAlign &= ~GUI_TA_HORIZONTAL;
  GUI_UNLOCK();
}


/********************************************************************
*
*                GUI_DispStringAt
*
*********************************************************************
*/
void GUI_DispStringAt(const char GUI_FAR *s, int x, int y) {
  GUI_LOCK();
  GUI_Context.DispPosX = x;
  GUI_Context.DispPosY = y;
  GUI_DispString(s);
  GUI_UNLOCK();
}