/// <summary>
/// ClassBreakRender分级渲染：根据数字字段的值分组渲染图层
/// </summary>
/// <param name="geoFeatureLayer">操作图层</param>
/// <param name="fieldName">操作字段名</param>
/// <param name="breakCount">分级数量</param>
/// <param name="outLineColor">分组符号的外框颜色</param>
public static void SetClassBreakRenderer(this IGeoFeatureLayer geoFeatureLayer, string fieldName, int breakCount, IColor outLineColor)
{
//获取该字段的最大值、最小值
var statisticsResults = geoFeatureLayer.FeatureClass.Statistics(fieldName, null);
double max = statisticsResults.Maximum;
double min = statisticsResults.Minimum;
//设置分级数，字段
IClassBreaksRenderer cbRender = new ClassBreaksRendererClass();
cbRender.MinimumBreak = min; //最小值
cbRender.Field = fieldName; //分级字段
cbRender.BreakCount = breakCount; //分级数量
//设置每一级的分段范围，符号
var lineSymbol = SymbolCreate.GetSimpleLineSymbol(outLineColor);//新建边线符号
for (int i = 0; i < breakCount; i++)
{
var color = ColorCreate.GetIColor(0, 250 / breakCount * (breakCount - i), 0);
cbRender.set_Break(i, (max - min) * (i + 1) / breakCount + min);
cbRender.set_Symbol(i, new SimpleFillSymbolClass {
Outline = lineSymbol, Color = color
});
}
geoFeatureLayer.Renderer = (IFeatureRenderer)cbRender;
}
/// <summary>
/// 获取简单的线符号SimpleLineSymbol
/// </summary>
/// <param name="color">线条的颜色</param>
/// <param name="lineWidth">线条的宽度</param>
/// <param name="style">线条样式，默认为实线</param>
/// <returns></returns>
public static ISimpleLineSymbol GetSimpleLineSymbol(IColor color, double lineWidth = 1,
esriSimpleLineStyle style = esriSimpleLineStyle.esriSLSSolid)
{
ISimpleLineSymbol simpleLineSymbol = new SimpleLineSymbol();
simpleLineSymbol.Color = color ?? ColorCreate.GetIColor(128, 138, 135);
simpleLineSymbol.Width = lineWidth; //设置线宽
simpleLineSymbol.Style = esriSimpleLineStyle.esriSLSSolid; //设置线型
return(simpleLineSymbol);
}
/// <summary>
/// 获取文本符号ITextSymbol
/// </summary>
/// <param name="colorRrggbbtt">文本颜色，6位颜色值RRGGBB，如"ff0000"为红色；
/// 或8位颜色值RRGGBBTT，如"ff0000ff"为红色不透明(最后两位00表示透明，ff表示不透明)</param>
/// <param name="fontName"></param>
/// <param name="fontSize"></param>
/// <returns></returns>
public static ITextSymbol GetTextSymbol(string colorRrggbbtt, string fontName, double fontSize)
{
ITextSymbol textSymbol = new TextSymbolClass();
textSymbol.Font = new StdFontClass {
Name = fontName
} as IFontDisp;
textSymbol.Size = fontSize;
textSymbol.Color = ColorCreate.GetIColor(colorRrggbbtt);
return(textSymbol);
}
/// <summary>
/// BarChartRenderer柱状图渲染：根据一个或多个数字字段的值配置柱状图渲染图层
/// </summary>
/// <param name="geoFeatureLayer"></param>
/// <param name="fieldNameColorDict"></param>
public static void SetBarCharRenderer(this IGeoFeatureLayer geoFeatureLayer, Dictionary <string, IColor> fieldNameColorDict)
{
//创建柱状符号
IBarChartSymbol barChartSymbol = new BarChartSymbolClass {
Width = 12
};
//获取两个字段的最大值，设置柱状图各柱状符号
double maxValue = 0;
ISymbolArray symbolArray = (ISymbolArray)barChartSymbol;
foreach (var pair in fieldNameColorDict)
{
var value = geoFeatureLayer.FeatureClass.Statistics(pair.Key, null, EStatisticsType.Maximum);
if (value > maxValue)
{
maxValue = value;
}
IFillSymbol fillSymbol = new SimpleFillSymbol {
Color = pair.Value
};
symbolArray.AddSymbol((ISymbol)fillSymbol);
}
//设置ChartSymbol的最大值，以及符号尺寸最大值（像素单位）
IChartSymbol chartSymbol = (IChartSymbol)barChartSymbol;
IMarkerSymbol markerSymbol = (IMarkerSymbol)barChartSymbol;
chartSymbol.MaxValue = maxValue;
markerSymbol.Size = 60;
//设置字段，依据字段的数据值，创建柱状图
IChartRenderer chartRenderer = new ChartRendererClass();
IRendererFields rendererFields = (IRendererFields)chartRenderer;
foreach (var pair in fieldNameColorDict)
{
rendererFields.AddField(pair.Key, pair.Key);
}
//设置图层的背景颜色
chartRenderer.ChartSymbol = (IChartSymbol)barChartSymbol;
chartRenderer.BaseSymbol = new SimpleFillSymbolClass {
Color = ColorCreate.GetIColor(239, 228, 190)
};
//设置其他属性
chartRenderer.UseOverposter = false;
chartRenderer.CreateLegend();//创建符号图例
chartRenderer.Label = "";
geoFeatureLayer.Renderer = chartRenderer as IFeatureRenderer;
}
/// <summary>
/// 获取简单点符号SimpleMarkerSymbol
/// </summary>
/// <param name="color">点内部颜色</param>
/// <param name="outlineColor">点符号的边线</param>
/// <param name="pointSize">点样式的大小</param>
/// <param name="markerStyle">设置符号样式：默认为菱形形状</param>
/// <returns></returns>
public static ISimpleMarkerSymbol GetSimpleMarkerSymbol(IColor color, IColor outlineColor = null,
double pointSize = 6, esriSimpleMarkerStyle markerStyle = esriSimpleMarkerStyle.esriSMSDiamond)
{
ISimpleMarkerSymbol markerSymbol = new SimpleMarkerSymbolClass();
markerSymbol.Style = markerStyle;
markerSymbol.Color = color;
markerSymbol.Size = pointSize;
markerSymbol.Outline = true;
markerSymbol.OutlineColor = outlineColor ?? ColorCreate.GetIColor(128, 138, 135);
markerSymbol.OutlineSize = 1;
return(markerSymbol);
}
/// <summary>
/// 获取简单的线符号SimpleLineSymbol
/// </summary>
/// <param name="rrggbbtt">线条的颜色字符串RRGGBB,如"ff0000"为红色</param>
/// <param name="lineWidth">线条的宽度</param>
/// <param name="style">线条样式，默认为实线</param>
/// <returns></returns>
public static ISimpleLineSymbol GetSimpleLineSymbol(string rrggbbtt, double lineWidth = 1,
esriSimpleLineStyle style = esriSimpleLineStyle.esriSLSSolid)
{
return(GetSimpleLineSymbol(ColorCreate.GetIColor(rrggbbtt), lineWidth, style));
}
/// <summary>
/// 获取简单点符号SimpleMarkerSymbol
/// </summary>
/// <param name="rrggbbtt">点符号的颜色，6位颜色值RRGGBB，如"ff0000"为红色；
/// 或8位颜色值RRGGBBTT，如"ff0000ff"为红色不透明(最后两位00表示透明，ff表示不透明)</param>
/// <param name="outlineColorRrggbbtt">点符号的边线颜色，6位颜色值RRGGBB，如"ff0000"为红色；
/// 或8位颜色值RRGGBBTT，如"ff0000ff"为红色不透明(最后两位00表示透明，ff表示不透明)</param>
/// <param name="pointSize">点的大小</param>
/// <param name="markerStyle">设置符号样式：默认为菱形形状</param>
/// <returns></returns>
public static ISimpleMarkerSymbol GetSimpleMarkerSymbol(string rrggbbtt, string outlineColorRrggbbtt = null,
double pointSize = 6, esriSimpleMarkerStyle markerStyle = esriSimpleMarkerStyle.esriSMSDiamond)
{
return(GetSimpleMarkerSymbol(ColorCreate.GetIColor(rrggbbtt), ColorCreate.GetIColor(outlineColorRrggbbtt), pointSize, markerStyle));
}
/// <summary>
/// 获取简单的填充符号ISimpleFillSymbol
/// </summary>
/// <param name="fillColorRrggbbtt">填充色，6位颜色值RRGGBB，如"ff0000"为红色；
/// 或8位颜色值RRGGBBTT，如"ff0000ff"为红色不透明(最后两位00表示透明，ff表示不透明)</param>
/// <param name="lineColorRrggbbtt">边线色，6位颜色值RRGGBB，如"ff0000"为红色；
/// 或8位颜色值RRGGBBTT，如"ff0000ff"为红色不透明(最后两位00表示透明，ff表示不透明)</param>
/// <param name="lineWidth">边线的宽度</param>
/// <returns></returns>
public static ISimpleFillSymbol GetSimpleFillSymbol(string fillColorRrggbbtt, string lineColorRrggbbtt, double lineWidth = 1, esriSimpleFillStyle style = esriSimpleFillStyle.esriSFSSolid)
{
return(GetSimpleFillSymbol(ColorCreate.GetIColor(fillColorRrggbbtt), ColorCreate.GetIColor(lineColorRrggbbtt), lineWidth, style));
}
/// <summary>
/// 用指定填充颜色字符串RRGGBB渲染图层，使用默认的边线颜色（灰色),可设置透明度
/// </summary>
/// <param name="geoLayer">图层</param>
/// <param name="mainColorStr">主颜色字符串RRGGBB,如"ff0000"为红色，主颜色即多边形图层的填充颜色，线图层的线条颜色，点图层的符号颜色</param>
/// <param name="outlineColorStr">面或点的边线颜色，若为null，则设置边线颜色为RGB：128, 138, 135</param>
/// <param name="transparency">图层的透明度，0为不透明，100为全透明</param>
/// <param name="widthOrSize">面/线图层的线宽，或点图层点的大小</param>
public static void SetSimpleRenderer(this IGeoFeatureLayer geoLayer, string mainColorStr, string outlineColorStr = null, short transparency = 0, double widthOrSize = 1)
{
IColor lineColor = outlineColorStr == null?ColorCreate.GetIColor(128, 138, 135) : ColorCreate.GetIColor(outlineColorStr);
SetSimpleRenderer(geoLayer, ColorCreate.GetIColor(mainColorStr), lineColor, transparency, widthOrSize);
}