guidev_cmpwithlcd.c

MCB2300_ucgui_LCD320240.rar LPC2368的uc/gui的移植

/*********************************************************************
*   			 SEGGER MICROCONTROLLER SYSTEME GmbH				 *
*   	 Solutions for real time microcontroller applications   	 *
**********************************************************************
*   																 *
*   	 (c) 1996 - 2004  SEGGER Microcontroller Systeme GmbH   	 *
*   																 *
*   	 Internet: www.segger.com    Support:  [e-mail]    *
*   																 *
**********************************************************************

***** emWin - Graphical user interface for embedded applications *****
emWin 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 re-
distributed in any way. We appreciate your understanding and fairness.
----------------------------------------------------------------------
File		: GUIDEV_CmpWithLCD.c
Purpose 	: Implementation of Checking for memory devices
----------------------------------------------------------------------
Version-Date---Author-Explanation
----------------------------------------------------------------------
1.00	000418 RS     First version for release (all tests O.K.)
---------------------------END-OF-HEADER------------------------------
*/

#include <string.h>
#include "GUI_Private.h"
#include "GUIDebug.h"

/* Memory device capabilities are compiled only if support for them is enabled. */ 

#if GUI_SUPPORT_MEMDEV

/*********************************************************************
*
*   	public code
*
**********************************************************************
*/
/*********************************************************************
*
*   	GUI_MEMDEV_CompareWithLCD
*/
int GUI_MEMDEV_CompareWithLCD(GUI_MEMDEV_Handle hMem, int *px, int *py, int *pExp, int *pAct)
{
	int Ret = 0;
	/* Make sure memory handle is valid */
	if (!hMem)
	{
		hMem = GUI_Context.hDevData;
	}
	if (!hMem)
	{
		return 1;
	}
	GUI_LOCK();
	{
		GUI_MEMDEV * pDevData = (GUI_MEMDEV *) GUI_ALLOC_h2p(hMem);  /* Convert to pointer */
		int y = pDevData->y0;
		int x0 = pDevData->x0;
		int XMax = pDevData->XSize + x0;
		int YMax = pDevData->YSize + y;
		int Max;
		int MagX = LCD_GetXMag();
		int MagY = LCD_GetYMag();
		/* Calculate limits */
		if (y < 0)
		{
			y = 0;
		}
		if (x0 < 0)
		{
			x0 = 0;
		}
		Max = LCD_GET_YSIZE();
		if (YMax > Max)
		{
			YMax = Max;
		}
		Max = LCD_GET_XSIZE();
		if (XMax > Max)
		{
			XMax = Max;
		}
		for (; y < YMax; y++)
		{
			int x = x0;
			U8 * pData = (U8 *) GUI_MEMDEV__XY2PTR(x, y);
			for (x = x0; x < XMax; x++)
			{
				int Exp = *pData++;
				int Act = LCD_L0_GetPixelIndex(x *MagX, y *MagY);
#if (GUI_NUM_LAYERS > 1)
				if (LCD_GetBitsPerPixelEx(GUI_Context.SelLayer) > 8)
						#else
				{
					if (LCD_GetBitsPerPixel() > 8)
							#endif
					{
						Exp |= (*pData++) << 8;
					}
				}
				if (Act != Exp)
				{
					*px = x;
					*py = y;
					*pAct = Act;
					*pExp = Exp;
					Ret = 1;
					goto Skip;
				}
			}
		}
	}
	Skip:
	GUI_UNLOCK();
	return Ret;
}

#else

void GUIDEV_CmpWithLCD(void)
{
} /* avoid empty object files */

#endif /* GUI_SUPPORT_MEMDEV */

/*************************** end of file ****************************/