/***********************************************************************************************************                                                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_MemDevB.cPurpose     : Memory device demo----------------------------------------------------------------------*/#include "GUI.H"#include "GUIDEMO.H"#include "WM.h"#include "stdio.h"#if GUI_SUPPORT_MEMDEV/***********************************************************************       Static data************************************************************************/static const GUI_POINT _aArrow[] = {  {  0, 0   +85},  {-40, -35 +85},  {-10, -25 +85},  {-10, -85 +85},  { 10, -85 +85},  { 10, -25 +85},  { 40, -35 +85}};/* Define the callback structure. The structure should contain all the data   required by the callback drawing funtion*/typedef struct {  int Angle;  int DoClear;} tDrawContext;/***********************************************************************       Static functions************************************************************************//* The user defined callback routine */static void _Draw(void * p) {  int XSize = LCD_GetXSize();  int YSize = LCD_GetYSize();  tDrawContext * pContext = (tDrawContext *)p;  int i = pContext->Angle;  static int iLast = -1;  static GUI_POINT aPoint[7];  if (pContext->DoClear)    GUI_Clear();  GUI_SetFont(&GUI_FontD24x32);  GUI_SetTextMode(GUI_TM_TRANS);  GUI_SetColor(GUI_GRAY);  GUI_SetFont(&GUI_FontComic18B_1);  GUI_DispStringHCenterAt("Below arrow", XSize / 2, YSize / 2 - 20);  if (iLast != i) {    float Angle = 0.02 * (float)i;    iLast = i;    GUI_RotatePolygon(aPoint, _aArrow, 7, Angle);  }  GUI_SetColor(GUI_WHITE);  GUI_FillPolygon(&aPoint[0], 7, XSize / 2, YSize / 2 + 30);  GUI_SetTextMode(GUI_TM_TRANS);  GUI_SetColor(GUI_DARKGRAY);  GUI_SetFont(&GUI_FontComic18B_1);  GUI_DispStringHCenterAt("Above arrow", XSize / 2, YSize / 2);}/***********************************************************************       GUIDEMO_ShowMemoryDevice************************************************************************/void GUIDEMO_ShowMemoryDevice(void) {  int i, tDiff, t0;  tDrawContext DrawContext;  GUI_COLOR colorBack;  GUI_RECT rView, rPrev, rTemp;  GUIDEMO_ShowIntro("Memory devices",                    "For flicker free animation"                    "\nand other purposes");  GUIDEMO_NotifyStartNext();  GUI_SetBkColor(GUI_GREEN);   GUI_Clear();  /* Use banding memory device  */  GUI_GetClientRect(&rView);    colorBack = GUI_ColorIsAvailable(GUI_RED) ? GUI_RED : GUI_BLACK;  GUI_SetBkColor(colorBack);  GUI_Clear();  t0 = GUI_GetTime();  for (i = 0; tDiff = GUI_GetTime() - t0, (tDiff < 8000) && !GUIDEMO_CheckCancel(); i++) {    DrawContext.Angle = 90 + tDiff / 50;    /* Calculate required size */    {      GUI_HMEM hMem = GUI_MEASDEV_Create();      GUI_MEASDEV_Select(hMem);      DrawContext.DoClear = 0;      _Draw(&DrawContext);      GUI_MEASDEV_GetRect(hMem, &rView);      GUI_MEASDEV_Delete(hMem);      rTemp = rView;      if (i)        GUI_MergeRect(&rView, &rView, &rPrev);      rPrev = rTemp;    }    DrawContext.DoClear = 1;    GUI_MEMDEV_Draw(&rView, _Draw, &DrawContext, 0, GUI_MEMDEV_NOTRANS);  }  GUI_SetFont(&GUI_FontComic24B_ASCII);  GUI_SetColor(GUI_WHITE);  GUI_DispStringAt("ms/Update: ", 10 , 200);  if (i) {    GUI_DispDecMin(tDiff / i);  }  GUIDEMO_Delay(1000);  GUI_Clear();}#else  void GUIDEMO_ShowMemoryDevice(void) {}#endif /* GUI_SUPPORT_MEMDEV */