/// <summary>
/// processes selection made using a mouse drag selection box
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void OnMapSelectBoxFinal(object sender, _DMapEvents_SelectBoxFinalEvent e)
{
if (EnableMapInteraction && _axMap.CursorMode == tkCursorMode.cmSelection)
{
var extL = 0D;
var extR = 0D;
var extT = 0D;
var extB = 0D;
Extents selectionBoxExtent = new Extents();
_axMap.PixelToProj(e.left, e.top, ref extL, ref extT);
_axMap.PixelToProj(e.right, e.bottom, ref extR, ref extB);
selectionBoxExtent.SetBounds(extL, extB, 0, extR, extT, 0);
Select(selectionBoxExtent, selectionFromSelectBox: true);
SelectionExtent = selectionBoxExtent;
var lyArg = new LayerEventArg(selectionExtent: SelectionExtent);
ExtentCreated?.Invoke(this, lyArg);
}
}
/// <summary>
/// gets the layer in the map and retrieves the corresponding layer item in the dictionary. Fires an event after a layer item is read
/// </summary>
public void ReadLayers()
{
for (int n = 0; n < _axmap.NumLayers; n++)
{
var h = _axmap.get_LayerHandle(n);
if (MapLayerDictionary.ContainsKey(h) && MapLayerDictionary[h].VisibleInLayersUI)
{
//if there is a listener to the event
if (LayerRead != null)
{
//get the corresponding layer item in the dictionary
var item = MapLayerDictionary[h];
//fill up the event argument class with the layer item
LayerEventArg lp = new LayerEventArg(item.Handle, item.Name, item.Visible, item.VisibleInLayersUI, item.LayerType);
LayerRead(this, lp);
}
}
}
}
private void MaplayersHandler_LayerRemoved(MapLayersHandler s, LayerEventArg e)
{
int index = 0;
while (index < MapLayerCollection.Count)
{
if (MapLayerCollection[index].Handle == e.LayerHandle)
{
MapLayerCollection.RemoveAt(index);
if (LayerRemoved != null)
{
LayerEventArg lp = new LayerEventArg(e.LayerHandle, layerRemoved: true);
LayerRemoved(this, lp);
}
break;
}
index++;
}
}
/// <summary>
/// handles editing of layer name and layer visibility
/// </summary>
/// <param name="layerHandle"></param>
/// <param name="layerName"></param>
/// <param name="visible"></param>
/// <param name="isShown"></param>
public void EditLayer(int layerHandle, string layerName, bool visible, bool isShown = true)
{
if (MapLayerDictionary.ContainsKey(layerHandle))
{
var ly = MapLayerDictionary[layerHandle];
ly.Name = layerName;
ly.Visible = visible;
ly.VisibleInLayersUI = isShown;
}
_axmap.set_LayerName(layerHandle, layerName);
_axmap.set_LayerVisible(layerHandle, visible);
if (OnLayerVisibilityChanged != null)
{
LayerEventArg lp = new LayerEventArg(layerHandle);
lp.LayerVisible = visible;
lp.LayerName = layerName;
OnLayerVisibilityChanged(this, lp);
}
_axmap.Redraw();
}
private void OnMapSelectionChanged(object sender, _DMapEvents_SelectionChangedEvent e)
{
if (ShapesSelected != null)
{
var sf = MapControl.get_GetObject(e.layerHandle) as Shapefile;
_selectedShapeIndexes = new int[sf.NumSelected];
int y = 0;
for (int x = 0; x < sf.NumShapes; x++)
{
if (sf.ShapeSelected[x])
{
_selectedShapeIndexes[y] = x;
y++;
}
}
if (ShapesSelected != null)
{
var lyArg = new LayerEventArg(_currentMapLayer.Handle, _selectedShapeIndexes);
ShapesSelected(this, lyArg);
}
}
}
public bool RemoveLayerByKey(string layerKey)
{
if (LayerDictionary.Count > 0)
{
List <int> layerHandles = new List <int>();
int counter = 0;
foreach (var item in LayerDictionary.Values)
{
if (item.LayerKey == layerKey)
{
layerHandles.Add(item.Handle);
}
}
foreach (var h in layerHandles)
{
MapLayerDictionary[h].Dispose();
MapLayerDictionary.Remove(h);
_axmap.RemoveLayer(h);
if (LayerRemoved != null)
{
LayerEventArg lp = new LayerEventArg(h, layerRemoved: true);
LayerRemoved(this, lp);
}
counter++;
}
if (counter > 0)
{
_axmap.Redraw();
}
return(counter > 0);
}
return(false);
}
/// <summary>
/// handles an image added to the map using file open dialog
/// </summary>
/// <param name="image"></param>
/// <returns></returns>
public int AddLayer(MapWinGIS.Image image, string layerName = "", bool isVisible = true, string layerKey = "")
{
var h = _axmap.AddLayer(image, isVisible);
if (h >= 0)
{
if (layerName.Length == 0)
{
layerName = Path.GetFileName(image.Filename);
}
_axmap.set_LayerName(h, layerName);
_currentMapLayer = SetMapLayer(h, layerName, isVisible, true, image.GeoProjection, "ImageClass", image.Filename);
_currentMapLayer.LayerKey = layerKey;
if (LayerRead != null)
{
LayerEventArg lp = new LayerEventArg(h, layerName, true, true, _currentMapLayer.LayerType);
LayerRead(this, lp);
}
}
return(h);
}
public void VisibilityExpression(string expression, VisibilityExpressionTarget expressiontarget)
{
var sf = (Shapefile)_currentMapLayer.LayerObject;
if (expressiontarget == VisibilityExpressionTarget.ExpressionTargetLabel)
{
_currentMapLayer.LabelsVisibilityExpression = expression;
sf.Labels.VisibilityExpression = expression;
}
else
{
_currentMapLayer.ShapesVisibilityExpression = expression;
sf.VisibilityExpression = expression;
}
MapControl.Redraw();
if (OnVisibilityExpressionSet != null)
{
//fill up the event argument class with the layer item
LayerEventArg lp = new LayerEventArg(_currentMapLayer.Handle, expressiontarget, expression);
lp.Shapefile = sf;
OnVisibilityExpressionSet(this, lp);
}
}
/// <summary>
/// Receives the extent made by selection box or a click select to select shapes in a shapefile using intersection.
/// Afterwards, a Selection event is raised
/// </summary>
/// <param name="selectExtents"></param>
/// <param name="selectionFromSelectBox"></param>
private void Select(Extents selectExtents, bool selectionFromSelectBox = false)
{
if (_currentMapLayer != null)
{
_selectedShapeIndexes = null;
_selectionFromSelectBox = selectionFromSelectBox;
if (_currentMapLayer.LayerType == "ShapefileClass")
{
var sf = _axMap.get_Shapefile(_currentMapLayer.Handle);
if (sf != null)
{
_currentMapLayer.SelectedIndexes = null;
sf.SelectNone();
sf.SelectionAppearance = tkSelectionAppearance.saDrawingOptions;
switch (sf.ShapefileType)
{
case ShpfileType.SHP_POINT:
if (sf.Categories.Count > 0)
{
sf.SelectionAppearance = tkSelectionAppearance.saSelectionColor;
}
else
{
sf.SelectionAppearance = tkSelectionAppearance.saDrawingOptions;
sf.SelectionDrawingOptions.PointSize = sf.DefaultDrawingOptions.PointSize;
sf.SelectionDrawingOptions.PointRotation = sf.DefaultDrawingOptions.PointRotation;
sf.SelectionDrawingOptions.PointShape = sf.DefaultDrawingOptions.PointShape;
}
break;
case ShpfileType.SHP_POLYGON:
break;
case ShpfileType.SHP_POLYLINE:
break;
}
var objSelection = new object();
if (sf.SelectShapes(selectExtents, 0, SelectMode.INTERSECTION, ref objSelection))
{
_selectedShapeIndexes = (int[])objSelection;
_currentMapLayer.SelectedIndexes = _selectedShapeIndexes;
for (int n = 0; n < _selectedShapeIndexes.Length; n++)
{
sf.ShapeSelected[_selectedShapeIndexes[n]] = true;
}
if (ShapesSelected != null)
{
var lyArg = new LayerEventArg(_currentMapLayer.Handle, _selectedShapeIndexes);
ShapesSelected(this, lyArg);
}
}
else
{
SelectionCleared?.Invoke(this, EventArgs.Empty);
}
_axMap.Redraw();
Selection?.Invoke(this, EventArgs.Empty);
}
}
else if (_currentMapLayer.LayerType == "ImageClass")
{
}
}
}
private static void _mapInterActionHandler_ShapesSelected(MapInterActionHandler s, LayerEventArg e)
{
}
/// <summary>
/// handles a shapefile added to the map using file open dialog
/// </summary>
/// <param name="sf"></param>
/// <returns></returns>
public int AddLayer(Shapefile sf, string layerName = "", bool isVisible = true, bool uniqueLayer = false,
fad3MappingMode mappingMode = fad3MappingMode.defaultMode, string layerKey = "", bool rejectIfExisting = false)
{
if (rejectIfExisting && layerName.Length > 0 && Exists(layerName))
{
var handle = get_MapLayer(layerName).Handle;
MapLayerDictionary[handle].LayerObject = sf;
return(handle);
}
if (uniqueLayer)
{
RemoveLayer(layerName);
}
var h = _axmap.AddLayer(sf, isVisible);
if (h >= 0)
{
if (layerName.Length == 0)
{
layerName = Path.GetFileName(sf.Filename);
}
_axmap.set_LayerName(h, layerName);
_axmap.set_LayerKey(h, layerKey);
_currentMapLayer = SetMapLayer(h, layerName, isVisible, true, sf.GeoProjection, "ShapefileClass", sf.Filename);
_currentMapLayer.LayerKey = layerKey;
_currentMapLayer.MappingMode = mappingMode;
if (LayerRead != null)
{
LayerEventArg lp = new LayerEventArg(h, layerName, true, true, _currentMapLayer.LayerType);
LayerRead(this, lp);
}
//LineWidthFix.FixLineWidth(sf);
}
else
{
int reprojectedCount = 0;
//if(sf.ReprojectInPlace(_axmap.GeoProjection,ref reprojectedCount))
var sfr = sf.Reproject(_axmap.GeoProjection, reprojectedCount);
if (reprojectedCount > 0)
{
h = _axmap.AddLayer(sfr, isVisible);
if (h > 0)
{
if (layerName.Length == 0)
{
layerName = Path.GetFileName(sf.Filename);
}
_axmap.set_LayerName(h, layerName);
_currentMapLayer = SetMapLayer(h, layerName, isVisible, true, sf.GeoProjection, "ShapefileClass", sf.Filename);
_currentMapLayer.LayerKey = layerKey;
_currentMapLayer.MappingMode = mappingMode;
if (LayerRead != null)
{
LayerEventArg lp = new LayerEventArg(h, layerName, true, true, _currentMapLayer.LayerType);
LayerRead(this, lp);
}
//LineWidthFix.FixLineWidth(sf);
}
}
}
return(h);
}
