memdev_autodev.c

来自「图像系统uc_GUI」· C语言 代码 · 共 281 行 · 第 1/4 页

*
*       static data, shape of polygon
*
********************************************************************
*/

static const GUI_POINT _aNeedle[] = {
  { MAG * ( 0), MAG * (  0 + 125)},
  { MAG * (-3), MAG * (-15 + 125)},
  { MAG * (-3), MAG * (-65 + 125)},
  { MAG * ( 3), MAG * (-65 + 125)},
  { MAG * ( 3), MAG * (-15 + 125)},
};

/*******************************************************************
*
*       structure containing information for drawing routine
*/
typedef struct {
  /* Information about what has to be displayed */
  GUI_AUTODEV_INFO AutoDevInfo;
  /* Polygon data */
  GUI_POINT aPoints[7];
  float Angle;
} PARAM;

/*******************************************************************
*
*       static code
*
********************************************************************
*/

/*******************************************************************
*
*       _GetAngle

  This routine returns the value value to indicate. In a real
  application, this value would somehow be measured.
*/
static float _GetAngle(int tDiff) {
  if (tDiff < 15000) {
    return  225 - 0.006 * tDiff ;
  }
  tDiff -= 15000;
  if (tDiff < 7500) {
    return  225 - 90 + 0.012 * tDiff ;
  }
  tDiff -= 7000;
  return 225;
}

/*******************************************************************
*
*       _Draw
*/
static void _Draw(void * p) {
  PARAM * pParam = (PARAM *)p;
  /* Fixed background */
  if (pParam->AutoDevInfo.DrawFixed) {
    GUI_ClearRect (60, 80 + bmScaleR140.YSize, 60 + bmScaleR140.XSize - 1, 180);
    GUI_DrawBitmap(&bmScaleR140, 60, 80);
  }
  /* Moving needle */
  GUI_SetColor(GUI_WHITE);
  GUI_AA_FillPolygon(pParam->aPoints, countof(_aNeedle), MAG * 160, MAG * 220);
  /* Fixed foreground */
  if (pParam->AutoDevInfo.DrawFixed) {
    GUI_SetTextMode(GUI_TM_TRANS);
    GUI_SetColor(GUI_RED);
    GUI_SetFont(&GUI_Font24B_ASCII);