lcdgetp.c

MCB2300_ucgui_LCD320240.rar LPC2368的uc/gui的移植

/*
*********************************************************************************************************
*   											 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		: LCDGetP.c
Purpose 	: Get Pixel routines
			  Note: These routines are in a module of their own
					because they are mostly not required to link
---------------------------END-OF-HEADER------------------------------
*/

#include <stddef.h> 		  /* needed for definition of NULL */
#include "GUI_Private.h"
#include "GUIDebug.h"

/*********************************************************************
*
*   	Public code
*
**********************************************************************
*/
/*********************************************************************
*
*   	LCD_GetPixelIndex
*
* NOTE:
*   We can not use the standard clipping which we use for drawing
*   operations as it is perfectly legal to read pixels outside of
*   the clipping area. We therefor get the bounding rectangle of the
*   device and use it for clipping.
*/
unsigned LCD_GetPixelIndex(int x, int y)
{
	LCD_RECT r;  
	GUI_ASSERT_LOCK();
	LCDDEV_L0_GetRect(&r);
	if (x < r.x0)
	{
		return 0;
	}
	if (x > r.x1)
	{
		return 0;
	}
	if (y < r.y0)
	{
		return 0;
	}
	if (y > r.y1)
	{
		return 0;
	}
	return LCDDEV_L0_GetPixelIndex(x, y);
}

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