/// <summary>
/// reset the properties of builder object so that the canvas will get new data
/// </summary>
/// <param name="canvas"></param>
/// <param name="x_count"></param>
/// <param name="y_count"></param>
/// <param name="marginX"></param>
/// <param name="marginY"></param>
/// <param name="priceOffset"></param>
/// <param name="volumeOffset"></param>
/// <param name="symbol"></param>
/// <param name="type"></param>
public void Refresh(ref Canvas canvas, int x_count, int y_count, int marginX, int marginY, double priceOffset, int volumeOffset, string symbol, string type)
{
canvas.Children.Clear(); // clean all old data
canvas.MouseDown -= new MouseButtonEventHandler(AddPointInfo); //clear event handler
canvas.MouseUp -= new MouseButtonEventHandler(RemovePointInfo);
this.x_count = x_count;
this.y_count = y_count;
this.marginX = marginX;
this.marginY = marginY;
this.priceOffset = priceOffset;
this.volumeOffset = volumeOffset;
this.type = type;
this.stockData = netReader.FetchStockMajorDataObject("ACB", type);
datesAxisKeypoint = GetDateKeypointsForXAxis(stockData);
pricesAxisKeypoint = GetPriceKeypointsForYAxis(stockData, y_count);
volumesAxisKeypoint = GetVolumeKeypointsForYAxis(stockData, y_count);
DrawStockMajorToCanvas(ref canvas);
}
/// <summary>
///
/// </summary>
/// <param name="canvas">canvas object</param>
/// <param name="x_count">x axis key point number</param>
/// <param name="y_count">y axis key point number</param>
/// <param name="margin">coordinate margin</param>
/// <param name="priceOffset">the percentage range above the highest price and below the lowest price</param>
/// <param name="meta"></param>
public CoordinateBuilder(Canvas canvas, MenuSetting menusettings, NetworkDataReader reader, SqlDataReader sqlReader, int x_count, int y_count, int marginX, int marginY, double priceOffset, int volumeOffset, string symbol, string type)
{
width = canvas.Width;
height = canvas.Height;
this.x_count = x_count;
this.y_count = y_count;
this.marginX = marginX;
this.marginY = marginY;
this.priceOffset = priceOffset;
this.volumeOffset = volumeOffset;
this.type = type;
netReader = reader;
this.sqlReader = sqlReader;
this.stockData = netReader.FetchStockMajorDataObject("ACB", type);
datesAxisKeypoint = GetDateKeypointsForXAxis(stockData);
pricesAxisKeypoint = GetPriceKeypointsForYAxis(stockData, y_count);
volumesAxisKeypoint = GetVolumeKeypointsForYAxis(stockData, y_count);
this.menuSetting = menusettings;
}