/// <summary>
/// Create graphic object for order
/// </summary>
/// <param name="location">Source order</param>
/// <returns>Graphic object for order</returns>
public static ClusterGraphicObject Create(MapPoint mapPoint, IList <Graphic> cluster)
{
ClusterGraphicObject graphic = new ClusterGraphicObject(mapPoint, cluster);
// ClusterGraphicObject contains static list of all clusters.
// This list used for disposing after new clustering process is started.
_graphics.Add(graphic);
return(graphic);
}
/// <summary>
/// Process cluster graphic mouse events.
/// </summary>
/// <param name="clusterGraphic">Cluster graphic.</param>
/// <param name="clickedGraphic">Last clicked item.</param>
private void _ProcessClusterGraphicMouseEvents(ClusterGraphicObject clusterGraphic, Graphic clickedGraphic)
{
Debug.Assert(clusterGraphic != null);
Debug.Assert(clickedGraphic != null);
Debug.Assert(_clustering != null);
Debug.Assert(_objectLayers != null);
if (!_clustering.ClusterExpanded)
{
_clustering.ExpandIfNeeded(clusterGraphic);
}
else
{
IList<object> clusteredData = _clustering.GetClusteredData(clusterGraphic);
ObjectLayer layer = MapHelpers.GetLayerWithData(clusteredData[0], _objectLayers);
if (clickedGraphic == clusterGraphic && layer.Selectable)
{
if (Keyboard.Modifiers != ModifierKeys.Shift && Keyboard.Modifiers != ModifierKeys.Control)
{
_mapControl.SelectedItems.Clear();
}
_ProcessSelectionChanges(clusteredData, layer);
}
}
}
/// <summary>
/// Unexpand cluster
/// </summary>
private void _UnexpandCluster()
{
if (!_mapctrl.IsInEditedMode)
_mapctrl.SetOpacityToLayers(MapControl.FullOpacity);
Debug.Assert(ClusterExpanded);
_expandedClusterGraphic.SetZIndex(ObjectLayer.BACKZINDEX);
_expandedClusterGraphic = null;
_clusterCenter = null;
_clusteringLayerColl.Clear();
_clusteringLayer.SelectedItems.Clear();
_leaderLinesLayer.Graphics.Clear();
}
/// <summary>
/// Check graphics count
/// </summary>
/// <param name="clusterGraphic">Cluster graphic to expand</param>
/// <returns>True if exceeded</returns>
private bool _MaxGraphicsToExpandExceeded(ClusterGraphicObject clusterGraphic)
{
IList<object> clusterData = GetClusteredData(clusterGraphic);
ObjectLayer objectLayer = MapHelpers.GetLayerWithData(clusterData[0], _mapctrl.ObjectLayers);
FlareClusterer clusterer = (FlareClusterer)objectLayer.MapLayer.Clusterer;
int objectsInCluster = (int)clusterGraphic.Attributes[ALClusterer.COUNT_PROPERTY_NAME];
bool exceeded = objectsInCluster > clusterer.MaximumFlareCount;
return exceeded;
}
/// <summary>
/// Expand cluster from cluster graphic
/// </summary>
/// <param name="clusterGraphic">Cluster graphic to expand</param>
private void _ExpandCluster(ClusterGraphicObject clusterGraphic)
{
if (_mapctrl.IsInEditedMode || _MaxGraphicsToExpandExceeded(clusterGraphic))
return;
if (!_mapctrl.IsInEditedMode)
_mapctrl.SetOpacityToLayers(MapControl.HalfOpacity);
_expandedClusterGraphic = clusterGraphic;
_clusteringLayer.Visible = true;
int count = (int)clusterGraphic.Attributes[ALClusterer.COUNT_PROPERTY_NAME];
Debug.Assert(count > 0);
for (int index = 0; index < count; index++)
{
string attrKey = ALClusterer.GRAPHIC_PROPERTY_NAME + index.ToString();
DataGraphicObject grObj = (DataGraphicObject)clusterGraphic.Attributes[attrKey];
_clusteringLayerColl.Add(grObj.Data);
// support already selected items
if (_mapctrl.SelectedItems.Contains(grObj.Data))
_clusteringLayer.SelectedItems.Add(grObj.Data);
}
_clusterCenter = _mapctrl.map.MapToScreen((MapPoint)clusterGraphic.Geometry);
if (_clusteringLayer.MapLayer.Graphics.Count > MAXIMUM_GRAPHICS_IN_CIRCLE_EXPANDED)
_SetSpiraledPositionsToExpandedClusterGraphics();
else
_SetCircledPositionsToExpandedClusterGraphics();
_CreateLeaderLines();
_expandedClusterGraphic.SetZIndex(ObjectLayer.FRONTZINDEX);
}
public IList<object> GetClusteredData(ClusterGraphicObject clusterGraphic)
{
List<object> clusteredData = new List<object>();
int count = (int)clusterGraphic.Attributes[ALClusterer.COUNT_PROPERTY_NAME];
for (int index = 0; index < count; index++)
{
string attributeName = ALClusterer.GRAPHIC_PROPERTY_NAME + index.ToString();
DataGraphicObject dataGraphic = (DataGraphicObject)clusterGraphic.Attributes[attributeName];
clusteredData.Add(dataGraphic.Data);
}
return clusteredData;
}
/// <summary>
/// Create graphic object for order
/// </summary>
/// <param name="location">Source order</param>
/// <returns>Graphic object for order</returns>
public static ClusterGraphicObject Create(MapPoint mapPoint, IList<Graphic> cluster)
{
ClusterGraphicObject graphic = new ClusterGraphicObject(mapPoint, cluster);
// ClusterGraphicObject contains static list of all clusters.
// This list used for disposing after new clustering process is started.
_graphics.Add(graphic);
return graphic;
}