/*
*********************************************************************************************************
*   											 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		: GUIDEMO_Lut.c
Purpose 	: Modify lookup table
----------------------------------------------------------------------
*/

#include "GUI.h"
#include "GUIDEMO.h"
#include "LCD_ConfDefaults.h"  /* valid LCD configuration */

#if (LCD_BITSPERPIXEL > 2) && (LCD_BITSPERPIXEL <= 8)

/*********************************************************************
*
*   	Static functions
*
**********************************************************************
*/

static void _ModifyLUT(int RFaktor, int GFaktor, int BFaktor)
{
	int NumColors = LCD_GetDevCap(LCD_DEVCAP_NUMCOLORS);
	int i;
	for (i = 0; (i < NumColors) && !GUIDEMO_CheckCancel(); i++)
	{
		U32 Color = LCD_GetDevCap(LCD_DEVCAP_COLOR + i);
		U32 R = Color & 0xff;
		U32 G = (Color >> 8) & 0xff;
		U32 B = (Color >> 16) & 0xff;
		/* Now modify color */
		R = (R * RFaktor) / 100; if (R > 255)
		{
									 R = 255;
		}
		G = (G * GFaktor) / 100; if (G > 255)
		{
									 G = 255;
		}
		B = (B * BFaktor) / 100; if (B > 255)
		{
									 B = 255;
		}
		/* Write modified color into lookup table */
		Color = R | (G << 8) | (B << 16);
		GUI_SetLUTEntry((U8) i, Color);
	}
}

/*********************************************************************
*
*   	GUIDEMO_DemoLUT
*
**********************************************************************
*/

void GUIDEMO_DemoLUT(void)
{
	int i;
	GUIDEMO_ShowIntro("Modify LUT", "... after drawing color bars");
	GUIDEMO_ShowColorBar();
	for (i = 100; (i >= 0) && !GUIDEMO_CheckCancel(); i -= 2)
	{
		_ModifyLUT(100, 100, i);
		GUI_Delay(20);
	}
	for (i = 100; (i >= 0) && !GUIDEMO_CheckCancel(); i -= 2)
	{
		_ModifyLUT(100, i, 0);
		GUI_Delay(20);
	}
	for (i = 100; (i >= 0) && !GUIDEMO_CheckCancel(); i -= 2)
	{
		_ModifyLUT(i, i, i);
		GUI_Delay(20);
	}
	LCD_InitLUT();
	GUIDEMO_Wait();
}

#else

void GUIDEMO_DemoLUT(void)
{
}

#endif