void InitLegend()
{
// create legend
legend.Items.Clear();
ColorValues cvals = (ColorValues)countries.Converter;
int cnt = cvals.Count;
double sz = 20;
for (int i = 0; i < cnt - 1; i++)
{
ColorValue cv = cvals[i];
ListBoxItem lbi = new ListBoxItem()
{
Height = sz,
Margin = new Thickness(0),
Padding = new Thickness(0)
};
StackPanel sp = new StackPanel()
{
Orientation = Orientation.Horizontal
};
LinearGradientBrush lgb = new LinearGradientBrush()
{
StartPoint = new Point(0, 0), EndPoint = new Point(0, 1)
};
lgb.GradientStops.Add(new GradientStop()
{
Color = cv.Color, Offset = 0
});
lgb.GradientStops.Add(new GradientStop()
{
Color = cvals[i + 1].Color, Offset = 1
});
sp.Children.Add(new Rectangle()
{
Width = sz,
Height = sz,
Fill = lgb,
Stroke = new SolidColorBrush(Colors.LightGray),
StrokeThickness = 0.5
});
sp.Children.Add(new TextBlock()
{
Height = sz,
Text = cv.Value.ToString(),
VerticalAlignment = VerticalAlignment.Center,
Margin = new Thickness(5, 0, 0, 0)
});
lbi.Content = sp;
legend.Items.Add(lbi);
}
legend.Items.Add(new ListBoxItem()
{
Height = sz
});
}
public static Countries CreateTestCollection()
{
Countries countries = new Countries();
using (Stream stream = Assembly.GetExecutingAssembly()
.GetManifestResourceStream("VectorLayer.Resources.gdp-ppp.txt"))
{
using (StreamReader sr = new StreamReader(stream))
{
for (; !sr.EndOfStream;)
{
string s = sr.ReadLine();
string[] ss = s.Split(new char[] { '\t' },
StringSplitOptions.RemoveEmptyEntries);
countries.Add(new Country()
{
Name = ss[1].Trim(), Value = double.Parse(ss[2])
});
}
}
}
ColorValues cvals = new ColorValues();
cvals.Add(new ColorValue()
{
Color = Colors.Red, Value = 0
});
cvals.Add(new ColorValue()
{
Color = Colors.Green, Value = 2000000
});
cvals.Add(new ColorValue()
{
Color = Colors.Blue, Value = 1.001 * countries.GetMax()
});
countries.Converter = cvals;
return(countries);
}
private void MapChart_Loaded(object sender, RoutedEventArgs e)
{
maps.Source = null;
vl = new VectorLayer()
{
LabelVisibility = LabelVisibility.Hidden,
Foreground = new SolidColorBrush(Color.FromArgb(255, 0x97, 0x35, 0x35))
};
// read text data from resources
using (Stream stream = Assembly.GetExecutingAssembly()
.GetManifestResourceStream("MapsExplorer.Resources.gdp-ppp.txt"))
{
using (StreamReader sr = new StreamReader(stream))
{
for (; !sr.EndOfStream;)
{
string s = sr.ReadLine();
string[] ss = s.Split(new char[] { '\t' },
StringSplitOptions.RemoveEmptyEntries);
countries.Add(new Country()
{
Name = ss[1].Trim(), Value = double.Parse(ss[2], CultureInfo.InvariantCulture)
});
}
}
}
// create palette
ColorValues cvals = new ColorValues();
cvals.Add(new ColorValue()
{
Color = Color.FromArgb(255, 241, 244, 255), Value = 0
});
cvals.Add(new ColorValue()
{
Color = Color.FromArgb(255, 241, 244, 255), Value = 5000
});
cvals.Add(new ColorValue()
{
Color = Color.FromArgb(255, 224, 224, 246), Value = 10000
});
cvals.Add(new ColorValue()
{
Color = Color.FromArgb(255, 203, 205, 255), Value = 20000
});
cvals.Add(new ColorValue()
{
Color = Color.FromArgb(255, 179, 182, 230), Value = 50000
});
cvals.Add(new ColorValue()
{
Color = Color.FromArgb(255, 156, 160, 240), Value = 100000
});
cvals.Add(new ColorValue()
{
Color = Color.FromArgb(255, 127, 132, 243), Value = 200000
});
cvals.Add(new ColorValue()
{
Color = Color.FromArgb(255, 89, 97, 230), Value = 500000
});
cvals.Add(new ColorValue()
{
Color = Color.FromArgb(255, 56, 64, 217), Value = 1000000
});
cvals.Add(new ColorValue()
{
Color = Color.FromArgb(255, 19, 26, 148), Value = 2000000
});
cvals.Add(new ColorValue()
{
Color = Color.FromArgb(255, 0, 3, 74), Value = 1.001 * countries.GetMax()
});
countries.Converter = cvals;
// read world map from resources
Utils.LoadKMZFromResources(vl, "MapsExplorer.Resources.WorldMap.kmz",
true, ProcessWorldMap);
maps.Layers.Add(vl);
maps.TargetZoomChanged += new EventHandler <PropertyChangedEventArgs <double> >(maps_TargetZoomChanged);
InitLegend();
}