/// <summary>
/// Draws shapefile preview in shapefile drawing column
/// </summary>
private void DataGridViewMW_CellFormatting(object sender, DataGridViewCellFormattingEventArgs e)
{
if (e.ColumnIndex != _shapeDrawingColumn)
{
return;
}
if (!CheckSynchronization())
{
return;
}
var img = e.Value as Image;
if (img == null)
{
return;
}
GeometryRowStyle val = _shapeOptions[e.RowIndex];
if (val == null || val.Style == null)
{
return;
}
using (Graphics g = Graphics.FromImage(img))
{
g.Clear(Color.White);
g.InterpolationMode = InterpolationMode.HighQualityBicubic;
g.SmoothingMode = SmoothingMode.HighQuality;
if (val.Type == GeometryType.Polygon)
{
val.Style.DrawRectangle(g, 0, 0, img.Width - 1, img.Height - 1, true, img.Width, img.Height,
BackgroundColor);
}
else if (val.Type == GeometryType.Polyline)
{
val.Style.DrawLine(g, 0, 0, img.Width - 1, img.Height - 1, true, img.Width, img.Height,
BackgroundColor);
}
else if (val.Type == GeometryType.Point)
{
val.Style.DrawPoint(g, 0.0f, 0.0f, img.Width, img.Height, BackgroundColor);
}
}
}
/// <summary>
/// Sets drawing options for particular row in data grid view
/// </summary>
/// <param name="rowIndex">Row index to set options for</param>
/// <param name="options">Set of options</param>
public bool set_ShapefileDrawingOptions(int rowIndex, GeometryRowStyle options)
{
if (!CheckSynchronization())
{
return(false);
}
if (rowIndex >= 0 && rowIndex < _shapeOptions.Count)
{
if (options.Style != null) // to avoid additional checks later
{
_shapeOptions[rowIndex] = options;
return(true);
}
}
return(false);
}
