public Legend(Map map, ILegendFactory factory = null, ILegendSettings settings = null)
{
_map = map;
_factory = factory ?? new LegendFactory();
_settings = settings ?? new LegendSettings();
//Regenerate();
}
public Legend(Map map, ILegendFactory factory = null, ILegendSettings settings = null)
{
_map = map;
_factory = factory ?? new LegendFactory();
_settings = settings ?? new LegendSettings();
//Regenerate();
}
private static Image CreateSymbolizerImage(ILegendFactory factory, ISymbolizer symbolizer)
{
var lif = factory[symbolizer];
if (lif != null)
{
var item = lif.Create(null, symbolizer);
return(item.Symbol);
}
return(null);
}
private static Image CreatePolygonSymbol(ILegendFactory factory, Size symbolSize, VectorStyle vs)
{
var res = new Bitmap(symbolSize.Width, symbolSize.Height);
using (var g = Graphics.FromImage(res))
{
g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
if (vs.PolygonSymbolizer == null)
{
var rect = new Rectangle(3, 3, symbolSize.Width - 6, symbolSize.Height - 6);
g.FillRectangle(vs.Fill, rect);
g.DrawRectangle(vs.Outline, rect);
}
else
{
return(CreateSymbolizerImage(factory, vs.PolygonSymbolizer));
}
}
return(res);
}
private static Image CreateLineSymbol(ILegendFactory legend, Size symbolSize, VectorStyle vs)
{
var res = new Bitmap(symbolSize.Width, symbolSize.Height);
using (var g = Graphics.FromImage(res))
{
g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
if (vs.LineSymbolizer == null)
{
var pts = new[] { new Point(2, symbolSize.Height - 4), new Point(symbolSize.Width / 3, symbolSize.Height / 2), new Point(symbolSize.Width / 2, symbolSize.Height / 2 + 1), new Point(symbolSize.Width - 4, 2) };
if (vs.EnableOutline)
{
g.DrawLines(vs.Outline, pts);
}
g.DrawLines(vs.Line, pts);
}
else
{
return(CreateSymbolizerImage(legend, vs.LineSymbolizer));
}
}
return(res);
}
private static Image CreatePointSymbol(ILegendFactory legend, Size symbolSize, VectorStyle vs)
{
var res = new System.Drawing.Bitmap(symbolSize.Width, symbolSize.Height);
using (var g = Graphics.FromImage(res))
{
g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
if (vs.Symbol != null)
{
g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
g.DrawImage(vs.Symbol, new Rectangle(2, 2, symbolSize.Width - 4, symbolSize.Height - 4),
new Rectangle(0, 0, vs.Symbol.Width, vs.Symbol.Height), GraphicsUnit.Pixel);
}
else if (vs.PointColor != null && vs.PointColor != Brushes.Transparent)
{
g.FillEllipse(vs.PointColor, new RectangleF(2, 2, symbolSize.Width - 4, symbolSize.Height - 4));
}
else
{
return(CreateSymbolizerImage(legend, vs.PointSymbolizer));
}
}
return(res);
}
protected virtual ILegendItem CreatePolygonalStyleLegendItem(ILegendFactory factory, ILegendSettings settings, VectorStyle vs)
{
return(new LegendItem {
Symbol = CreatePolygonSymbol(factory, settings.SymbolSize, vs)
});
}
