/***********************************************************************************************************                                                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.cPurpose     : Speed demo----------------------------------------------------------------------*/#include <stdlib.h>  /* for rand */#include "GUI.H"#include "GUIDEMO.H"static const GUI_COLOR _aColor[8] = {  0x000000,   0x0000FF,   0x00FF00,   0x00FFFF,   0xFF0000,   0xFF00FF,   0xFFFF00,   0xFFFFFF};/***********************************************************************       GUIDEMO_Speed************************************************************************/void GUIDEMO_Speed(void) {  int t = GUI_GetTime();  int i = 0;  int XSize = LCD_GET_XSIZE();  int YSize = LCD_GET_YSIZE();  I32 NumPixels=0;  U16 aColorIndex[8];  GUIDEMO_ShowIntro("High speed",                    "Multi layer clipping"                    "\nHighly optimized drivers"                    );  for (i = 0; i< 8; i++) {    aColorIndex[i] = GUI_Color2Index(_aColor[i]);  }    for (i = 0; (((t + 8000) - (int)GUI_GetTime()) > 0) && !GUIDEMO_CheckCancel(); i++) {    GUI_RECT r;    GUI_SetColorIndex(aColorIndex[i&7]);    /* Calculate random positions */    r.x0 = rand() % XSize - XSize / 2;    r.y0 = rand() % YSize - YSize / 2;    r.x1 = r.x0 + rand() % XSize;    r.y1 = r.y0 + rand() % 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 >= XSize)      r.x1 = XSize - 1;    if (r.y1 >= YSize)      r.y1 = 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);  #else    GUI_SetFont(&GUI_Font16B_ASCII);  #endif  GUI_SetColor(GUI_WHITE);  GUI_DispStringAt("Pixels/sec: ", 10, (LCD_GetYSize() - GUI_GetFontSizeY()) / 2);  if (t == 0)    t++;  GUI_DispDecMin(10 * (NumPixels / t));  GUIDEMO_Wait();}