public void VisibilityExpression(string expression, VisibilityExpressionTarget expressiontarget)
{
if (expressiontarget == VisibilityExpressionTarget.ExpressionTargetLabel)
{
_currentMapLayer.LabelsVisibilityExpression = expression;
}
else
{
_currentMapLayer.ShapesVisibilityExpression = expression;
}
if (OnVisibilityExpressionSet != null)
{
//fill up the event argument class with the layer item
LayerEventArg lp = new LayerEventArg(_currentMapLayer.Handle, expressiontarget, expression);
OnVisibilityExpressionSet(this, lp);
}
}
/// <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;
OnLayerVisibilityChanged(this, lp);
}
_axmap.Redraw();
}
/// <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);
}
}
}
}
/// <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)
{
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);
if (LayerRead != null)
{
LayerEventArg lp = new LayerEventArg(h, layerName, true, true, _currentMapLayer.LayerType);
LayerRead(this, lp);
}
}
return(h);
}
/// <summary>
/// handles shapefiles added to the map
/// </summary>
/// <param name="layer"></param>
/// <param name="layerName"></param>
/// <param name="visible"></param>
/// <param name="showInLayerUI"></param>
/// <param name="layerHandle"></param>
/// <returns></returns>
public int AddLayer(object layer, string layerName, bool visible, bool showInLayerUI, string fileName = "", fad3MappingMode mappingMode = fad3MappingMode.defaultMode)
{
int h = 0;
GeoProjection gp = new GeoProjection();
var layerType = layer.GetType().Name;
switch (layerType)
{
case "ShapefileClass":
h = _axmap.AddLayer((Shapefile)layer, visible);
gp = ((Shapefile)layer).GeoProjection;
//LineWidthFix.FixLineWidth((Shapefile)layer);
break;
case "ImageClass":
h = _axmap.AddLayer((MapWinGIS.Image)layer, visible);
gp = ((MapWinGIS.Image)layer).GeoProjection;
break;
case "GridClass":
h = _axmap.AddLayer((Grid)layer, visible);
gp = _axmap.GeoProjection;
break;
}
_axmap.set_LayerName(h, layerName);
_currentMapLayer = SetMapLayer(h, layerName, visible, showInLayerUI, gp, layerType, fileName);
_currentMapLayer.MappingMode = mappingMode;
if (LayerRead != null)
{
LayerEventArg lp = new LayerEventArg(h, layerName, visible, showInLayerUI, _currentMapLayer.LayerType);
LayerRead(this, lp);
}
return(h);
}
/// <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);
}
}
_axMap.Redraw();
EventHandler handler = Selection;
if (handler != null)
{
handler(this, EventArgs.Empty);
}
}
}
else if (_currentMapLayer.LayerType == "ImageClass")
{
}
}
}