www.pudn.com > ucosv2(GUI).rar > GUI_DispStringInRect.c

/*
*********************************************************************************************************
*                                                uC/GUI
*                        Universal graphic software for embedded applications
*
*                       (c) Copyright 2002, Micrium Inc., Weston, FL
*                       (c) Copyright 2002, SEGGER Microcontroller Systeme GmbH
*
*              µC/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        : GUI_DispStringInRect.c 
Purpose     : Implementation of GUI_DispStringInRect 
---------------------------END-OF-HEADER------------------------------ 
*/ 
 
 
#include            /* needed for definition of NULL */ 
#include  
#include  
#include "GUI_Private.H" 
  
 
/******************************************************************** 
* 
*                Display String in given rectangle 
* 
********************************************************************* 
*/ 
 
static void _DispStringInRect(const char GUI_FAR *s, GUI_RECT* pRect, int TextAlign) { 
  GUI_RECT r; 
  GUI_RECT rLine; 
  int y; 
  int NumLines; 
  const char *sOrg =s; 
  int FontYSize; 
  int xLine; 
  FontYSize = GUI_GetFontSizeY(); 
  if (pRect) { 
    r = *pRect; 
  } else { 
    GUI_GetClientRect(&r); 
  } 
  /* Count the number of lines for vertical alignment */ 
  for (NumLines=1; ;NumLines++) { 
    int LineLen= GUI__GetLineLen(s,0x7fff); 
    s += LineLen; 
    if (GUI__HandleEOLine(&s)) 
      break; 
  } 
  /* Do the vertical alignment */ 
  switch (TextAlign & GUI_TA_VERTICAL) { 
	case GUI_TA_TOP: 
		y = r.y0; 
    break; 
	case GUI_TA_BASELINE: 
	case GUI_TA_BOTTOM: 
	y = r.y1 -NumLines * FontYSize+1; 
    break; 
	case GUI_TA_VCENTER: 
		y = r.y0+(r.y1-r.y0+1 -NumLines * FontYSize) /2; 
    break; 
	} 
  for (s=sOrg; ;) { 
    int LineLen= GUI__GetLineLen(s,0x7fff); 
    int xLineSize = GUI_GetLineDistX(s, LineLen); 
    switch (TextAlign & GUI_TA_HORIZONTAL) { 
    case GUI_TA_HCENTER: 
      xLine = r.x0+(r.x1-r.x0-xLineSize)/2; break; 
    case GUI_TA_LEFT: 
      xLine = r.x0; break; 
    case GUI_TA_RIGHT: 
      xLine = r.x1 -xLineSize; 
    } 
    rLine.x0 = GUI_Context.DispPosX = xLine; 
    rLine.x1 = rLine.x0 + xLineSize-1; 
    rLine.y0 = GUI_Context.DispPosY = y; 
    rLine.y1 = y + FontYSize-1; 
    GUI__DispLine(s, LineLen, &rLine); 
    s += LineLen; 
    y += GUI_GetFontDistY(); 
    if (GUI__HandleEOLine(&s)) 
      break; 
  } 
} 
 
 
void GUI_DispStringInRect(const char GUI_FAR *s, GUI_RECT* pRect, int TextAlign) { 
  #if (GUI_WINSUPPORT) 
    const GUI_RECT *pClipRect_Old; 
  #else 
    GUI_RECT Rect_Old; 
  #endif 
  if (s) { 
    GUI_LOCK(); 
    if (pRect) { 
      #if (GUI_WINSUPPORT) 
        pClipRect_Old = WM_SetUserClipRect(pRect); 
      #else 
        Rect_Old = GUI_Context.ClipRect; 
        LCD_SetClipRectEx(pRect); 
      #endif       
    } 
    _DispStringInRect(s, pRect, TextAlign); 
    #if (GUI_WINSUPPORT) 
      WM_SetUserClipRect(pClipRect_Old); 
    #else 
      LCD_SetClipRectEx(&Rect_Old); 
    #endif       
    GUI_UNLOCK(); 
  } 
} 
 
/***  End of file ***/