memdev_autodev.c

来自「嵌入式实时操作系统uc/OS-II于s3c2410的开发测试程序２源代码」· C语言 代码 · 共 259 行 · 第 1/3 页

    return  225 - 0.006 * tDiff ;
  }
  tDiff -= 15000;
  if (tDiff < 7500) {
    return  225 - 90 + 0.012 * tDiff ;
  }
  tDiff -= 7000;
  return 225;
}

/*******************************************************************
*
*                     Drawing routine
*
********************************************************************
*/

static void Draw(void * p) {
  PARAM * pParam = (PARAM *)p;
  /* Fixed background */
  if (pParam->AutoDevInfo.DrawFixed) {
    GUI_ClearRect (80,50 + bmScaleR140.YSize, 90 + bmScaleR140.XSize - 1, 150);
    GUI_DrawBitmap(&bmScaleR140, 80, 50);
  }
  /* Moving needle */
  GUI_SetColor(GUI_WHITE);
  GUI_AA_FillPolygon(pParam->aPoints, countof(aNeedle), MAG * 150, MAG * 180);
  /* Fixed foreground */
  if (pParam->AutoDevInfo.DrawFixed) {
    GUI_SetTextMode(GUI_TM_TRANS);
    GUI_SetColor(GUI_RED);
    GUI_SetFont(&GUI_Font24B_ASCII);
    GUI_DispStringHCenterAt("RPM / 1000", 150, 110);
  }
}

/*******************************************************************
*
*  Shows a scale with a needle using a banding memory device
*
********************************************************************
*/

void DemoScale(void) {
  int Cnt=0;
  int tDiff=0;
  PARAM Param;            /* Parameters for drawing routine */
  GUI_AUTODEV AutoDev;    /* Object for banding memory device */
  /* Show message */
  GUI_SetColor(GUI_WHITE);
  GUI_SetBkColor(GUI_BLACK);
  GUI_Clear();
  GUI_SetFont(&GUI_Font8x16);
  GUI_DispStringHCenterAt("Scale using GUI_AUTODEV-object", 160, 0);
  /* Enable high resolution for antialiasing */
  GUI_AA_EnableHiRes();
  GUI_AA_SetFactor(MAG);
  /* Create GUI_AUTODEV-object */
  GUI_MEMDEV_CreateAuto(&AutoDev);
  /* Show needle for a fixed time */
  while (tDiff < 24000) {
    /* Get value to display an calculate polygon for needle  */
    Param.Angle = GetAngle(tDiff)* DEG2RAD;
    GUI_RotatePolygon(Param.aPoints, aNeedle, countof(aNeedle), Param.Angle);
    GUI_MEMDEV_DrawAuto(&AutoDev, &Param.AutoDevInfo, &Draw, &Param);
//    GUI_Delay(100);
 	Cnt++;
    tDiff+=50;
    
   Delay(10);
  }
  /* Display milliseconds / picture */
  GUI_SetColor(GUI_WHITE);
  GUI_SetFont(&GUI_Font8x16);
  GUI_DispStringHCenterAt("Milliseconds / picture:", 140, 180);
  GUI_SetTextAlign(GUI_TA_CENTER);
  GUI_SetTextMode(GUI_TM_NORMAL);
  GUI_DispNextLine();
  GUI_GotoX(160);
  GUI_DispFloatMin((float)tDiff / (float)Cnt, 2);
  /* Delete GUI_AUTODEV-object */
  GUI_MEMDEV_DeleteAuto(&AutoDev);
}