gui_mergerect.c

成功移植到s3c44b0开发板上的ucos-ii和lwip

/*
*********************************************************************************************************
*                                                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        : GUI_MergeRect.c
Purpose     : Implementation of GUI_MergeRect
----------------------------------------------------------------------
*/

#include "GUI.h"
#include "GUIDebug.h"

/*********************************************************************
*
*       Defines
*
**********************************************************************
*/

#define Min(v0,v1) ((v0>v1) ? v1 : v0)
#define Max(v0,v1) ((v0>v1) ? v0 : v1)

/*********************************************************************
*
*       Public code
*
**********************************************************************
*/
/*********************************************************************
*
*       GUI_MergeRect
*
* Purpose:
*   Calc smalles rectangles containing both rects.
*/
void GUI_MergeRect(GUI_RECT* pDest, const GUI_RECT* pr0, const GUI_RECT* pr1) {
  if (pDest) {
    if (pr0 && pr1) {
      pDest->x0 = Min(pr0->x0, pr1->x0);
      pDest->y0 = Min(pr0->y0, pr1->y0);
      pDest->x1 = Max(pr0->x1, pr1->x1);
      pDest->y1 = Max(pr0->y1, pr1->y1);
      return;
    }
    *pDest = *(pr0 ? pr0 : pr1);
  }
}

/*************************** End of file ****************************/