public static void RandomizeLayerColors(Layers.VectorLayer layer)
{
layer.Style.EnableOutline = true;
layer.Style.Fill = new SolidBrush(Color.FromArgb(80, m_DefaultColors[m_DefaultColorIndex % m_DefaultColors.Length]));
layer.Style.Outline = new Pen(Color.FromArgb(100, m_DefaultColors[(m_DefaultColorIndex + ((int)(m_DefaultColors.Length * 0.5))) % m_DefaultColors.Length]), 1f);
m_DefaultColorIndex++;
}
private void OnClear(object sender, EventArgs e)
{
if (MapControl == null)
{
return;
}
var map = MapControl.Map;
if (_layer != null && map.Layers.Contains(_layer))
{
map.Layers.Remove(_layer);
_layer.Dispose();
_layer = null;
}
}
/// <inheritdoc/>
protected override void OnMapControlChangedInternal(EventArgs e)
{
base.OnMapControlChangedInternal(e);
if (MapControl == null)
{
_layer.Dispose();
_layer = null;
Enabled = false;
return;
}
_geometryProvider = new Data.Providers.GeometryProvider((GeoAPI.Geometries.IGeometry)null);
_layer = new Layers.VectorLayer("_tmp_Geometries", _geometryProvider);
MapControl.ActiveToolChanged += OnMapControlActiveToolChanged;
MapControl.GeometryDefined += OnGeometryDefined;
}
private void OnMapQueried(SharpMap.Data.FeatureDataTable features)
{
OnClear(this, EventArgs.Empty);
if (MapControl == null)
{
return;
}
_geometryProvider = new SharpMap.Data.Providers.GeometryFeatureProvider(features);
_layer = new SharpMap.Layers.VectorLayer("QueriedFeatures", _geometryProvider);
_layer.IsQueryEnabled = false;
var map = MapControl.Map;
map.Layers.Add(_layer);
MapControl.Refresh();
}
private void OnMapQueried(SharpMap.Data.FeatureDataTable features)
{
OnClear(this, EventArgs.Empty);
if (MapControl == null) return;
_geometryProvider = new SharpMap.Data.Providers.GeometryFeatureProvider(features);
_layer = new SharpMap.Layers.VectorLayer("QueriedFeatures", _geometryProvider);
_layer.IsQueryEnabled = false;
var map = MapControl.Map;
map.Layers.Add(_layer);
MapControl.Refresh();
}
private void OnClear(object sender, EventArgs e)
{
if (MapControl == null) return;
var map = MapControl.Map;
if (_layer != null && map.Layers.Contains(_layer))
{
map.Layers.Remove(_layer);
_layer.Dispose();
_layer = null;
}
}
