private void AddThematicLegendItems(DemographicStyleBuilder styleBuilder, LegendAdornmentLayer legendAdornmentLayer, Map map)
{
ShapeFileFeatureLayer statesLayer = map.DynamicOverlay.Layers["usStatesLayer"] as ShapeFileFeatureLayer;
ClassBreakStyle thematicStyle = (ClassBreakStyle)styleBuilder.GetStyle(statesLayer.FeatureSource);
for (int i = 0; i < thematicStyle.ClassBreaks.Count; i++)
{
LegendItem legendItem = new LegendItem();
if (i < thematicStyle.ClassBreaks.Count)
{
legendItem.ImageStyle = thematicStyle.ClassBreaks[i].DefaultAreaStyle;
legendItem.ImageWidth = 20;
legendItem.TextRightPadding = 5;
legendItem.RightPadding = 5;
string text = string.Empty;
if (i != thematicStyle.ClassBreaks.Count - 1)
{
text = string.Format("{0:#,0.####} ~ {1:#,0.####}",
DemographicStyleTextFormatter.GetFormatedStringForLegendItem(thematicStyle.ColumnName, thematicStyle.ClassBreaks[i].Value),
DemographicStyleTextFormatter.GetFormatedStringForLegendItem(thematicStyle.ColumnName, thematicStyle.ClassBreaks[i + 1].Value));
}
else
{
text = string.Format("> {0:#,0.####}",
DemographicStyleTextFormatter.GetFormatedStringForLegendItem(thematicStyle.ColumnName, thematicStyle.ClassBreaks[i].Value));
}
legendItem.TextStyle = new TextStyle(text, new GeoFont("Segoe UI", 10), new GeoSolidBrush(GeoColor.SimpleColors.Black));
}
legendAdornmentLayer.LegendItems.Add(legendItem);
}
}
private void AddDotDensityLegendItems(DemographicStyleBuilder styleBuilder, LegendAdornmentLayer legendAdornmentLayer, Map map)
{
ShapeFileFeatureLayer statesLayer = map.DynamicOverlay.Layers["usStatesLayer"] as ShapeFileFeatureLayer;
CustomDotDensityStyle dotDensityStyle = (CustomDotDensityStyle)styleBuilder.GetStyle(statesLayer.FeatureSource);
int[] pointCounts = new int[] { 5, 10, 20, 50 };
foreach (int pointCount in pointCounts)
{
LegendItem legendItem = new LegendItem();
legendItem.ImageMask = new AreaStyle(new GeoPen(GeoColor.StandardColors.LightGray, 1), new GeoSolidBrush(GeoColor.SimpleColors.Transparent));
legendItem.ImageWidth = 48;
legendItem.TextTopPadding = 16;
legendItem.TextRightPadding = 5;
legendItem.BottomPadding = 16;
legendItem.TopPadding = 16;
legendItem.RightPadding = 5;
CustomDotDensityStyle legendDotDensityStyle = (CustomDotDensityStyle)dotDensityStyle.CloneDeep();
legendDotDensityStyle.DrawingPointsNumber = pointCount;
legendItem.ImageStyle = legendDotDensityStyle;
string text = string.Format(CultureInfo.InvariantCulture, "{0:0.####}", DemographicStyleTextFormatter.GetFormatedStringForLegendItem(dotDensityStyle.ColumnName, (pointCount / dotDensityStyle.PointToValueRatio)));
legendItem.TextStyle = new TextStyle(text, new GeoFont("Segoe UI", 10), new GeoSolidBrush(GeoColor.SimpleColors.Black));
legendAdornmentLayer.LegendItems.Add(legendItem);
}
}
private void AddValueCircleLegendItems(DemographicStyleBuilder styleBuilder, LegendAdornmentLayer legendAdornmentLayer, Map map)
{
ShapeFileFeatureLayer statesLayer = map.DynamicOverlay.Layers["usStatesLayer"] as ShapeFileFeatureLayer;
ValueCircleStyle valueCircleStyle = (ValueCircleStyle)styleBuilder.GetStyle(statesLayer.FeatureSource);
int[] circleAreas = new int[] { 160, 320, 640, 1280 };
foreach (int circleArea in circleAreas)
{
LegendItem legendItem = new LegendItem();
double radius = Math.Sqrt(circleArea / Math.PI);
legendItem.ImageStyle = new PointStyle(PointSymbolType.Circle, new GeoSolidBrush(valueCircleStyle.InnerColor), new GeoPen(new GeoSolidBrush(valueCircleStyle.OuterColor)), (int)(radius * 2));
AreaStyle maskStyle = new AreaStyle(new GeoPen(GeoColor.StandardColors.LightGray, 1), new GeoSolidBrush(GeoColor.SimpleColors.Transparent));
legendItem.ImageMask = maskStyle;
legendItem.ImageWidth = 48;
legendItem.TextTopPadding = 16;
legendItem.TextRightPadding = 5;
legendItem.BottomPadding = 16;
legendItem.TopPadding = 16;
legendItem.RightPadding = 5;
double drawingRadius = circleArea / valueCircleStyle.DrawingRadiusRatio * valueCircleStyle.BasedScale / valueCircleStyle.DefaultZoomLevel.Scale;
double ratio = (valueCircleStyle.MaxValidValue - valueCircleStyle.MinValidValue) / (valueCircleStyle.MaxCircleAreaInDefaultZoomLevel - valueCircleStyle.MinCircleAreaInDefaultZoomLevel);
double resultValue = (drawingRadius - valueCircleStyle.MinCircleAreaInDefaultZoomLevel) * ratio + valueCircleStyle.MinValidValue;
string text = DemographicStyleTextFormatter.GetFormatedStringForLegendItem(valueCircleStyle.ColumnName, resultValue);
legendItem.TextStyle = new TextStyle(text, new GeoFont("Segoe UI", 10), new GeoSolidBrush(GeoColor.SimpleColors.Black));
legendAdornmentLayer.LegendItems.Add(legendItem);
}
}
private void UpdateLegend(DemographicStyleBuilder styleBuilder, Map map)
{
LegendAdornmentLayer legendAdornmentLayer = map.AdornmentOverlay.Layers[0] as LegendAdornmentLayer;
legendAdornmentLayer.LegendItems.Clear();
if (styleBuilder is ThematicDemographicStyleBuilder)
{
AddThematicLegendItems(styleBuilder, legendAdornmentLayer, map);
}
else if (styleBuilder is DotDensityDemographicStyleBuilder)
{
AddDotDensityLegendItems(styleBuilder, legendAdornmentLayer, map);
}
else if (styleBuilder is ValueCircleDemographicStyleBuilder)
{
AddValueCircleLegendItems(styleBuilder, legendAdornmentLayer, map);
}
else if (styleBuilder is PieChartDemographicStyleBuilder)
{
AddPieGraphLegendItems(styleBuilder, legendAdornmentLayer, map);
}
legendAdornmentLayer.ContentResizeMode = LegendContentResizeMode.Fixed;
legendAdornmentLayer.Height = GetLegendHeight(legendAdornmentLayer);
legendAdornmentLayer.Width = GetLegendWidth(legendAdornmentLayer);
}
private void AddPieGraphLegendItems(DemographicStyleBuilder styleBuilder, LegendAdornmentLayer legendAdornmentLayer, Map map)
{
ShapeFileFeatureLayer statesLayer = map.DynamicOverlay.Layers["usStatesLayer"] as ShapeFileFeatureLayer;
PieZedGraphStyle zedGraphStyle = (PieZedGraphStyle)styleBuilder.GetStyle(statesLayer.FeatureSource);
foreach (KeyValuePair <string, GeoColor> item in zedGraphStyle.PieSlices)
{
LegendItem legendItem = new LegendItem();
legendItem.ImageWidth = 20;
legendItem.TextRightPadding = 5;
legendItem.RightPadding = 5;
legendItem.ImageStyle = new AreaStyle(new GeoSolidBrush(item.Value));
legendItem.TextStyle = new TextStyle(item.Key, new GeoFont("Segoe UI", 10), new GeoSolidBrush(GeoColor.SimpleColors.Black));
legendAdornmentLayer.LegendItems.Add(legendItem);
}
}
private bool UpdateMapAndLegend(JsonCallbackRequest callbackRequest, Map map)
{
// Get the requested sub-categories
Category selectedCategory = null;
Collection <CategoryItem> selectedCategoryItems = new Collection <CategoryItem>();
if (callbackRequest.StyleBuildType == DemographicStyleBuilderType.PieChart)
{
selectedCategoryItems = GetCategoryItemByAlias(callbackRequest.SelectedCategoryItems, ref selectedCategory);
}
else
{
selectedCategoryItems = GetCategoryItemByAlias(new Collection <string>()
{
callbackRequest.RequestColumnAlias
}, ref selectedCategory);
}
DemographicStyleBuilder demographicStyle = null;
switch (callbackRequest.StyleBuildType)
{
case DemographicStyleBuilderType.PieChart:
demographicStyle = new PieChartDemographicStyleBuilder();
foreach (CategoryItem categoryItem in selectedCategoryItems)
{
((PieChartDemographicStyleBuilder)demographicStyle).SelectedColumnAliases.Add(categoryItem.Alias);
}
if (!string.IsNullOrEmpty(callbackRequest.StartColor))
{
((PieChartDemographicStyleBuilder)demographicStyle).Color = GeoColor.FromHtml(callbackRequest.StartColor);
}
break;
case DemographicStyleBuilderType.Thematic:
demographicStyle = new ThematicDemographicStyleBuilder();
if (!string.IsNullOrEmpty(callbackRequest.StartColor))
{
((ThematicDemographicStyleBuilder)demographicStyle).StartColor = GeoColor.FromHtml(callbackRequest.StartColor);
}
if (!string.IsNullOrEmpty(callbackRequest.EndColor))
{
((ThematicDemographicStyleBuilder)demographicStyle).EndColor = GeoColor.FromHtml(callbackRequest.EndColor);
}
if (!string.IsNullOrEmpty(callbackRequest.ColorWheelDirection))
{
((ThematicDemographicStyleBuilder)demographicStyle).ColorWheelDirection = callbackRequest.ColorWheelDirection.Equals("Clockwise") ? ColorWheelDirection.Clockwise : ColorWheelDirection.CounterClockwise;
}
break;
case DemographicStyleBuilderType.DotDensity:
demographicStyle = new DotDensityDemographicStyleBuilder();
if (!string.IsNullOrEmpty(callbackRequest.StartColor))
{
((DotDensityDemographicStyleBuilder)demographicStyle).Color = GeoColor.FromHtml(callbackRequest.StartColor);
}
if (callbackRequest.SliderValue > 0)
{
((DotDensityDemographicStyleBuilder)demographicStyle).DotDensityValue = 50 * (callbackRequest.SliderValue / 3.0);
}
break;
case DemographicStyleBuilderType.ValueCircle:
demographicStyle = new ValueCircleDemographicStyleBuilder();
if (!string.IsNullOrEmpty(callbackRequest.StartColor))
{
((ValueCircleDemographicStyleBuilder)demographicStyle).Color = GeoColor.FromHtml(callbackRequest.StartColor);
}
if (callbackRequest.SliderValue > 0)
{
((ValueCircleDemographicStyleBuilder)demographicStyle).RadiusRatio = callbackRequest.SliderValue / 3.0;
}
break;
default:
break;
}
foreach (CategoryItem categoryItem in selectedCategoryItems)
{
demographicStyle.SelectedColumns.Add(categoryItem.ColumnName);
}
ShapeFileFeatureLayer statesLayer = map.DynamicOverlay.Layers["usStatesLayer"] as ShapeFileFeatureLayer;
statesLayer.ZoomLevelSet.ZoomLevel01.CustomStyles.Clear();
Style selectedStyle = demographicStyle.GetStyle(statesLayer.FeatureSource);
statesLayer.ZoomLevelSet.ZoomLevel01.CustomStyles.Add(selectedStyle);
statesLayer.ZoomLevelSet.ZoomLevel01.ApplyUntilZoomLevel = ApplyUntilZoomLevel.Level20;
map.DynamicOverlay.Redraw();
// update the legend based on the selected style
UpdateLegend(demographicStyle, map);
return(true);
}
