public static void OnMouseMove(MapTool mapTool, MouseEventArgs e)
{
if (e.Button != MouseButtons.None)
return;
RefreshCursor(mapTool);
}
/// <summary>
/// Converts a coordinate as clicked on the map (so in the maps coordinate system) to coordinates
/// in the layer's coordinate system.
/// </summary>
/// <param name="mapTool"></param>
/// <param name="mapCoordinate"></param>
/// <returns></returns>
protected static ICoordinate ConvertFromMapToLayer(MapTool mapTool, ICoordinate mapCoordinate)
{
var layer = mapTool.Layers.FirstOrDefault();
if (layer == null)
{
return(mapCoordinate);
}
if (layer.CoordinateTransformation != null)
{
var xy = layer.CoordinateTransformation.MathTransform.Inverse()
.Transform(new[] { mapCoordinate.X, mapCoordinate.Y });
return(new Coordinate(xy[0], xy[1]));
}
return(mapCoordinate);
}
private static void RefreshCursor(MapTool mapTool)
{
if (mapTool.IsActive)
{
var targetLayer = mapTool.Layers.FirstOrDefault();
if (targetLayer != null)
{
var cursor = cursorsPerTool[mapTool];
if (cursor != null)
{
SetCursor(mapTool, cursor);
return;
}
}
}
SetCursor(mapTool, Cursors.Default);
}
/// <summary>
/// Converts a coordinate as clicked on the map (so in the maps coordinate system) to coordinates
/// in the layer's coordinate system.
/// </summary>
/// <param name="mapTool"></param>
/// <param name="mapCoordinate"></param>
/// <returns></returns>
protected static ICoordinate ConvertFromMapToLayer(MapTool mapTool, ICoordinate mapCoordinate)
{
var layer = mapTool.Layers.FirstOrDefault();
if (layer == null)
return mapCoordinate;
if (layer.CoordinateTransformation != null)
{
var xy = layer.CoordinateTransformation.MathTransform.Inverse()
.Transform(new[] {mapCoordinate.X, mapCoordinate.Y});
return new Coordinate(xy[0], xy[1]);
}
return mapCoordinate;
}
private static void SetCursor(MapTool mapTool, Cursor cursor)
{
if (!ReferenceEquals(mapTool.MapControl.Cursor, cursor))
mapTool.MapControl.Cursor = cursor;
}
public static void OnIsActiveChanged(MapTool mapTool)
{
RefreshCursor(mapTool);
}
public static void InitializeCursor(MapTool mapTool, Bitmap icon)
{
cursorsPerTool.Add(mapTool, icon != null ? CreateAddFeatureCursor(icon) : null);
}