TreeMapItemGroupInfo.MaxValue Property
Returns the maximum value of the items in this group.
Namespace: DevExpress.XtraTreeMap
Assembly: DevExpress.XtraTreeMap.v18.2.dll
Declaration
Property Value
Type | Description |
---|---|
Double | A Double value. |
Example
To implement a custom colorizer, design a class implementing the ITreeMapColorizer interface and implement the interface ITreeMapColorizer.GetItemColor method. After that, an instance of the class can be assigned to the TreeMapControl.Colorizer property.
Note
A complete sample project is available at https://github.com/DevExpress-Examples/how-to-implement-a-custom-colorizer-t361751
using DevExpress.TreeMap;
using DevExpress.XtraTreeMap;
using System;
using System.Drawing;
namespace CustomColorizerSample {
class CustomColorizer : ITreeMapColorizer {
Palette palette = Palette.Office2016Palette;
public Palette Palette {
get { return palette; }
set {
if(palette.Equals(value)) return;
palette = value;
RaiseColorizerChanged();
}
}
public event ColorizerChangedEventHandler ColorizerChanged;
public Color GetItemColor(ITreeMapItem item, TreeMapItemGroupInfo group) {
if(item.Children.Count == 0) {
Color itemColor = Palette[group.ItemIndex % Palette.Count];
double itemWeight = (item.Value - group.MinValue) / (group.MaxValue - group.MinValue);
if(Double.IsNaN(itemWeight)) itemWeight = 1;
return Color.FromArgb(
(int)(itemWeight * 255),
itemColor.R,
itemColor.G,
itemColor.B
);
}
else
return Palette[Palette.Count - 1 - (group.GroupIndex + group.GroupLevel + group.ItemIndex) % Palette.Count];
}
void RaiseColorizerChanged() {
if(ColorizerChanged == null) return;
ColorizerChanged.Invoke(this, new ColorizerChangedEventArgs());
}
}
}
Related GitHub Examples
The following code snippet (auto-collected from DevExpress Examples) contains a reference to the MaxValue property.
Note
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