/// <summary>
/// Validate the input value.
/// </summary>
/// <param name="value">The input value.</param>
/// <param name="validValue">If validation successes, return the validated value. If not, return null.</param>
/// <returns>A value indicating whether the validationg is successful.</returns>
private bool ValueValidate(string value, out object validValue)
{
IRasterLayer rasterLayer = (IRasterLayer)Editor.ActiveLayer;
IRasterProps rasterProp = (IRasterProps)rasterLayer.Raster;
return(Raster.CSharpValue2PixelValue(value, rasterProp.PixelType, out validValue));
}
// After editing the cell value, the current value is recorded.
void rasterGridView_CellEndEdit(object sender, DataGridViewCellEventArgs e)
{
try
{
Position pos = new Position(Convert.ToInt32(rasterGridView.SelectedCells[0].OwningColumn.HeaderText) - 1,
Convert.ToInt32(rasterGridView.SelectedCells[0].OwningRow.Cells[0].Value) - 1);
IRasterLayer rasterLayer = (IRasterLayer)Editor.ActiveLayer;
IRasterProps rasterProps = (IRasterProps)rasterLayer.Raster;
object newValue = null;
if (rasterGridView[e.ColumnIndex, e.RowIndex].Value == null)
{
if (oldValue != rasterGridView.NoDataValue)
{
EditValue(rasterGridView.NoDataValue, oldValue, e.ColumnIndex, e.RowIndex);
}
}
else
{
if (Raster.CSharpValue2PixelValue(rasterGridView[e.ColumnIndex, e.RowIndex].Value, rasterProps.PixelType, out newValue))
{
double newDValue = Convert.ToDouble(newValue);
EditValue(newDValue, oldValue, e.ColumnIndex, e.RowIndex);
}
else
{
MessageBox.Show(string.Format("Invalid pixel value!\n\nValid pixel type: {0}", rasterProps.PixelType.ToString()), "Error");
if (oldValue != rasterGridView.NoDataValue)
{
rasterGridView[e.ColumnIndex, e.RowIndex].Value = oldValue;
}
}
}
ShowCellStatus();
}
catch (Exception ex)
{
MessageBox.Show(string.Format("Unfortunately, the application meets an error.\n\nSource: {0}\nSite: {1}\nMessage: {2}", ex.Source, ex.TargetSite, ex.Message), "Error");
}
}
/// <summary>
/// Write edits to the input raster.
/// </summary>
/// <param name="raster">Raster of raster layer to be edited.</param>
/// <param name="edits">Pixel collection that contains edited pixels.</param>
private static void WriteEdits(IRaster raster, PixelCollection edits)
{
IRasterProps rasterProps = (IRasterProps)raster;
int minRow = rasterProps.Height - 1;
int maxRow = 0;
int minCol = rasterProps.Width - 1;
int maxCol = 0;
for (int i = 0; i < edits.Count; i++)
{
#region Get the extent of the edition region
Position cellPos = edits[i].Position;
if (cellPos.Row > maxRow)
{
maxRow = cellPos.Row;
}
if (cellPos.Row < minRow)
{
minRow = cellPos.Row;
}
if (cellPos.Column > maxCol)
{
maxCol = cellPos.Column;
}
if (cellPos.Column < minCol)
{
minCol = cellPos.Column;
}
#endregion
}
IPnt pos = new PntClass();
pos.SetCoords(maxCol - minCol + 1, maxRow - minRow + 1);
IPixelBlock pixelBlock = raster.CreatePixelBlock(pos);
pos.SetCoords(minCol, minRow);
raster.Read(pos, pixelBlock);
// Set new values
IPixelBlock3 pixelBlock3 = (IPixelBlock3)pixelBlock;
Array pixels = (Array)pixelBlock3.get_PixelData(0);
for (int i = 0; i < edits.Count; i++)
{
object value = null;
Raster.CSharpValue2PixelValue(edits[i].NewValue, rasterProps.PixelType, out value);
pixels.SetValue(value,
edits[i].Position.Column - minCol,
edits[i].Position.Row - minRow);
}
pixelBlock3.set_PixelData(0, (System.Object)pixels);
IRasterEdit rasterEdit = (IRasterEdit)raster;
rasterEdit.Write(pos, (IPixelBlock)pixelBlock3);
}