private Dictionary <string, Color> GetGradientDictColor(BiColorGradientTheme gradientTheme)
{
Dictionary <string, Color> result = new Dictionary <string, Color>();
double minValue = gradientTheme.MinValue;
double maxValue = gradientTheme.MaxValue;
double interval = (maxValue - minValue) / 5;
double leftVal = 0;
double rightVal = 0;
if (interval == 0)
{
interval = 1;
}
for (int index = 0; index <= 4; index++)
{
leftVal = minValue + interval * index;
rightVal = minValue + interval * (index + 1);
string range = string.Format(" {0}~{1}", leftVal.ToString(), rightVal.ToString());
Color color = new Color();
color = gradientTheme.GetColorByValue(minValue + index * interval);
result.Add(range, color);
}
return(result);
}
private void comboboxCallback(object sender, EventArgs e)
{
if (!MapControl.Current.Layers.Any(x => x.LayerData.Name == "地块"))
{
return;
}
MapLayer parcelLayer = MapControl.Current.Layers.First(x => x.LayerData.Name == "地块");
string currentItem = _comboBox.SelectedItem as string;
if (currentItem == "无")
{
_vLayout.Children.Clear();
_checkBox.Visibility = System.Windows.Visibility.Collapsed;
ParcelTheme = null;
}
else if (currentItem == "用地性质")
{
_checkBox.Visibility = System.Windows.Visibility.Visible;
ParcelUsageTheme usageTheme = new ParcelUsageTheme();
ParcelTheme = usageTheme;
_dictColor = usageTheme.DictColor;
ShowLegend();
}
else if (currentItem == "容积率" || currentItem == "建筑密度" || currentItem == "绿地率" || currentItem == "建筑限高")
{
_checkBox.Visibility = System.Windows.Visibility.Visible;
var gradientTheme = new BiColorGradientTheme();
gradientTheme.Property = currentItem;
gradientTheme.MinValue = GetPropMinValue(parcelLayer, currentItem);
gradientTheme.MaxValue = GetPropMaxValue(parcelLayer, currentItem);
ParcelTheme = gradientTheme;
_dictColor = GetGradientDictColor(gradientTheme);
ShowLegend();
}
if (ParcelTheme != null) // mod 20120725
{
parcelLayer.ApplyColorTheme(ParcelTheme);
if (ParcelTheme is IDataColorTheme)
{
string prop = (ParcelTheme as IDataColorTheme).Property;
parcelLayer.ApplyToolTip(f => UIHelper.TitledToolTip(prop, f[prop]));
}
else if (ParcelTheme is ParcelUsageTheme)
{
parcelLayer.ApplyToolTip(f => UIHelper.TitledToolTip(f["用地代码"], ParcelColorCfg.GetUsageByCode(f["用地代码"])));
}
}
else
{
parcelLayer.ClearColorTheme();
parcelLayer.ApplyToolTip(f => null);
}
}
public Color GetColorByValue(double value)
{
double[] values = _stops.Keys.ToArray();
if (value < values.First())
{
return(_stops.First().Value);
}
else
{
for (int i = 0; i < values.Length - 1; i++)
{
double a = values[i];
double b = values[i + 1];
if (value >= a && value < b)
{
BiColorGradientTheme bcgm = new BiColorGradientTheme {
MinValue = a, MaxValue = b, MinColor = _stops[a], MaxColor = _stops[b]
};
return(bcgm.GetColorByValue(value));
}
}
return(_stops.Last().Value);
}
}
public SimpleFluidTheme(string startProp, string endProp, BiColorGradientTheme colorTheme)
{
StartColorProperty = startProp;
EndColorProperty = endProp;
InnerColorTheme = colorTheme;
}
public SimpleFluidTheme()
{
InnerColorTheme = new BiColorGradientTheme("", 0, 1);
//InnerColorTheme.MinColor = Color.FromRgb(255, 150, 0); //Colors.Peru; //Colors.SaddleBrown;
//InnerColorTheme.MaxColor = Color.FromRgb(77, 216, 233); //Colors.Cyan;
}
