/// <summary> /// Generate label categories for the given set of shapefile categories /// </summary> /// <param name="mapWin">The reference to MapWindow</param> /// <param name="layerHandle">The handle of the layer</param> internal static void GenerateCategories(LegendControl.Legend legend, int layerHandle) { Layer lyr = legend.GetLayer(layerHandle); Shapefile sf = lyr.GetObject() as MapWinGIS.Shapefile; Labels lb = sf.Labels; sf.Labels.ClearCategories(); for (int i = 0; i < sf.Categories.Count; i++) { ShapefileCategory cat = sf.Categories.get_Item(i); LabelCategory labelCat = lb.AddCategory(cat.Name); labelCat.Expression = cat.Expression; } SymbologySettings settings = Globals.get_LayerSettings(layerHandle); ColorBlend blend = (ColorBlend)settings.LabelsScheme; if (blend != null) { ColorScheme scheme = ColorSchemes.ColorBlend2ColorScheme(blend); if (settings.LabelsRandomColors) { lb.ApplyColorScheme(tkColorSchemeType.ctSchemeRandom, scheme); } else { lb.ApplyColorScheme(tkColorSchemeType.ctSchemeGraduated, scheme); } } if (settings.LabelsVariableSize) { for (int i = 0; i < lb.NumCategories; i++) { lb.get_Category(i).FontSize = (int)((double)sf.Labels.FontSize + (double)settings.LabelsSizeRange / ((double)lb.NumCategories - 1) * (double)i); } } // Expressions aren't supported by labels yet, therefore we need to copy indices from the symbology for (int i = 0; i < lb.Count; i++) { MapWinGIS.Label label = lb.get_Label(i, 0); label.Category = sf.get_ShapeCategory(i); } }
public void ApplyColors(SchemeType coloringType, ColorRamp colors) { _labels.ApplyColorScheme((tkColorSchemeType)coloringType, colors.GetInternal()); }