FlatCollection.cs

#region Copyright Syncfusion Inc. 2001-2016.
// Copyright Syncfusion Inc. 2001-2016. All rights reserved.
// Use of this code is subject to the terms of our license.
// A copy of the current license can be obtained at any time by e-mailing
// licensing@syncfusion.com. Any infringement will be prosecuted under
// applicable laws. 
using Org.Json;


#endregion
using System;
using Android.Views;
using Android.Graphics;
using Com.Syncfusion.Treemap;
using System.Collections.Generic;
using Android.Widget;
using Com.Syncfusion.Treemap.Enums;
using Android.Content;

namespace SampleBrowser
{
	public class FlatCollection : SamplePage
	{
		public FlatCollection ()
		{
		}
		SfTreeMap tree;


		public override View GetSampleContent (Context context)
		{
			tree = new SfTreeMap (context);
			tree.WeightValuePath="Population";
			tree.ColorValuePath="Growth";
			tree.HighlightOnSelection = false;
			var margin = context.Resources.DisplayMetrics.Density * 20;
            float density = context.Resources.DisplayMetrics.Density;

			//LeafItemSetting
            tree.LeafItemSettings = new LeafItemSetting (){ ShowLabels = true, Gap = 5, LabelPath = "Region", StrokeColor = Color.White, StrokeWidth = 2 };
			tree.LeafItemSettings.LabelStyle = new Style () {Margin= new Margin(margin/2,margin,0,0), TextSize = 18, TextColor = Color.White };

			TreeMapFlatLevel level = new TreeMapFlatLevel { ShowHeader = true, GroupPath = "Continent", GroupStrokeColor= Color.Gray, GroupStrokeWidth = 1, GroupPadding = 5, HeaderHeight = 25 };
			level.HeaderStyle = new Style() { TextColor = Color.Gray, TextSize = 16 };

			tree.Levels.Add(level);

			//RangeColorMapping
			List<Range> ranges = new List<Range>();
			ranges.Add(new Range() { LegendLabel = "1 % Growth", From = 0, To = 1, Color = Color.ParseColor("#77D8D8") });
			ranges.Add(new Range() { LegendLabel = "2 % Growth", From = 0, To = 2, Color = Color.ParseColor("#AED960") });
			ranges.Add(new Range() { LegendLabel = "3 % Growth", From = 0, To = 3, Color = Color.ParseColor("#FFAF51") });
			ranges.Add(new Range() { LegendLabel = "4 % Growth", From = 0, To = 4, Color = Color.ParseColor("#F3D240") });
			tree.LeafItemColorMapping = new RangeColorMapping() { Ranges = ranges };

			//LegendSetting
			Size legendSize =new Size(300, 100);
			Size iconSize = new Size(12,12);
            Color legendColor=  Color.Gray;
			tree.LegendSettings = new LegendSetting()
			{
				LabelStyle = new Style()
				{
					TextSize = 12,
					TextColor = legendColor
				},
				IconSize = iconSize,
		       ShowLegend = true,
				LegendSize = legendSize
			};
            tree.ShowTooltip = true;
            CustomTooltipSetting tooltip = new CustomTooltipSetting(context);
            tree.TooltipSettings = tooltip;
            tree.DataSource = GetDataSource();
			return tree;
		}

		JSONArray GetDataSource()
		{
			JSONArray array = new JSONArray ();
			array.Put(getJsonObject("Asia", "Indonesia", 3, 237641326));
			array.Put(getJsonObject("Asia", "Russia", 2, 152518015));
			array.Put(getJsonObject("North America",  "United States", 4,  315645000));
			array.Put(getJsonObject("North America", "Mexico", 2, 112336538));
			array.Put(getJsonObject("North America", "Canada", 1, 35056064));
			array.Put(getJsonObject("South America", "Colombia", 1, 47000000));
			array.Put(getJsonObject("South America", "Brazil", 3, 193946886));
			array.Put(getJsonObject("Africa", "Nigeria", 2, 170901000));
			array.Put(getJsonObject("Africa", "Egypt", 1, 83661000));
			array.Put(getJsonObject("Europe", "Germany", 1, 81993000));
			array.Put(getJsonObject("Europe", "France", 1, 65605000));
			array.Put(getJsonObject("Europe", "UK", 1, 63181775));
			return array;
		}

		JSONObject getJsonObject(String continent,String region,double growth,double population)
		{
			JSONObject obj = new JSONObject ();

			obj.Put ("Continent", continent);
			obj.Put ("Region", region);
			obj.Put ("Growth", growth);
			obj.Put ("Population", population);

			return obj;

		}
			

	}

    public class CustomTooltipSetting : TooltipSetting
    {
        Context context;
        public CustomTooltipSetting(Context con)
        {
            context = con;
        }
        public override View GetView(object data, Context context)
        {
            LinearLayout layout = new LinearLayout(context);
            LinearLayout.LayoutParams linearlayoutParams = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WrapContent,
                    LinearLayout.LayoutParams.WrapContent);
            layout.Orientation = Orientation.Vertical;
            layout.LayoutParameters = linearlayoutParams;
            layout.SetGravity(GravityFlags.CenterHorizontal);

            TextView topLabel = new TextView(context);
            topLabel.Text = ((JSONObject)data).GetString("Region");
            topLabel.TextSize = 12;
            topLabel.SetTextColor(Color.ParseColor("#FFFFFF"));
            topLabel.Gravity = GravityFlags.CenterHorizontal;

            TextView SplitLine = new TextView(context);
            SplitLine.Text = "-------";
            SplitLine.SetTextColor(Color.Gray);
            SplitLine.Gravity = GravityFlags.CenterHorizontal;


            TextView bottoLabel = new TextView(context);
            var growth = ((JSONObject)data).GetDouble("Growth");
            bottoLabel.Text = ((int)growth).ToString() + "%";
            bottoLabel.TextSize = 12;
            bottoLabel.SetTextColor(Color.ParseColor("#FFFFFF"));
            bottoLabel.Gravity = GravityFlags.CenterHorizontal;

            layout.AddView(topLabel);
            layout.AddView(SplitLine);
            layout.AddView(bottoLabel);

            return layout;
        }
    }
}