gui_mergerect.c

来自「MCB2300_ucgui_LCD320240.rar LPC2368的u」· C语言 代码 · 共 63 行

/*
*********************************************************************************************************
*   											 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 ****************************/