guidemo_speed.c

LPC2368驱动淘宝上27元钱的TFT的代码

/*
*********************************************************************************************************
*   											 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_Speed.c
Purpose 	: Speed demo
----------------------------------------------------------------------
*/

#include <stdlib.h>  /* for rand */

#include "GUI.h"
#include "GUIDEMO.h"

//extern int rand(void);

static const GUI_COLOR _aColor[8] = {
0x000000, 
0x0000FF, 
0x00FF00, 
0x00FFFF, 
0xFF0000, 
0xFF00FF, 
0xFFFF00, 
0xFFFFFF
};

/*********************************************************************
*
*   	GUIDEMO_Speed
*
**********************************************************************
*/

void GUIDEMO_Speed(void)
{
	int t, i;
	I32 NumPixels = 0;
	U16 aColorIndex[8];
	GUIDEMO_ShowIntro("High speed", "\nmulti layer clipping"
					"\nhighly optimized drivers");
	for (i = 0; i < 8; i++)
	{
		aColorIndex[i] = GUI_Color2Index(_aColor[i]);
	}  
	t = GUI_GetTime();
	for (i = 0; ((GUI_GetTime() - t) < 8000) && !GUIDEMO_CheckCancel(); i++)
	{
		GUI_RECT r;
		GUI_SetColorIndex(aColorIndex[i & 7]);
		/* Calculate random positions */
		r.x0 = rand() % LCD_XSIZE - LCD_XSIZE / 2;
		r.y0 = rand() % LCD_YSIZE - LCD_YSIZE / 2;
		r.x1 = r.x0 + 20 + rand() % LCD_XSIZE;
		r.y1 = r.y0 + 20 + rand() % LCD_YSIZE;
		GUI_FillRect(r.x0, r.y0, r.x1, r.y1);
		/* Clip rectangle to visible area and add the number of pixels (for speed computation) */
		if (r.x1 >= LCD_XSIZE)
		{
			r.x1 = LCD_XSIZE - 1;
		}
		if (r.y1 >= LCD_YSIZE)
		{
			r.y1 = LCD_YSIZE - 1;
		}
		if (r.x0 < 0)
		{
			r.x0 = 0;
		}
		if (r.y1 < 0)
		{
			r.y1 = 0;
		}
		NumPixels += (r.x1 - r.x0) * (r.y1 - r.y0);
		/* Allow short breaks so we do not use all available CPU time ... */
	}
	t = (GUI_GetTime() - t) / 100;
	GUI_Clear();
	GUIDEMO_NotifyStartNext();
#if GUIDEMO_LARGE
	GUI_SetFont(&GUI_FontComic24B_ASCII);
#elif !(GUIDEMO_TINY)
	GUI_SetFont(&GUI_Font16B_ASCII);
#else
	GUI_SetFont(&GUI_Font13B_ASCII);
#endif
	GUI_SetColor(GUI_WHITE);
	GUI_DispStringAt("Pixels/sec: ", 5, (LCD_YSIZE - GUI_GetFontSizeY()) / 2);
	if (t == 0)
	{
		t++;
	}
	GUI_DispDecMin(10 * (NumPixels / t));
	GUIDEMO_Wait();
}