private Size SizeItem(int offset, ILegendItem item, Graphics g)
{
if (item == null)
{
return(new Size(0, 0));
}
int width = offset + 30 + (int)g.MeasureString(item.LegendText, Font).Width;
int height = ItemHeight;
if (item.LegendSymbolMode == SymbolMode.Symbol)
{
Size s = item.GetLegendSymbolSize();
if (s.Height > ItemHeight)
{
height = s.Height;
}
}
if (item.IsExpanded)
{
if (item.LegendItems != null)
{
foreach (ILegendItem child in item.LegendItems)
{
Size cs = SizeItem(offset + _indentation, child, g);
height += cs.Height;
if (cs.Width > width)
{
width = cs.Width;
}
}
}
}
return(new Size(width, height));
}
/// <summary>
/// Draw the symbol for a particular item.
/// </summary>
/// <param name="g">Graphics object used for drawing.</param>
/// <param name="topLeft">TopLeft position where the symbol should be drawn.</param>
/// <param name="itemBox">LegendBox of the item, the symbol should be added to.</param>
private void DrawSymbol(Graphics g, ref PointF topLeft, LegendBox itemBox)
{
ILegendItem item = itemBox.Item;
// Align symbols so that their right side is about 20 pixels left
// of the top-left X, but allow up to 128x128 sized symbols
Size s = item.GetLegendSymbolSize();
int h = s.Height;
if (h < 1)
{
h = 1;
}
if (h > 128)
{
h = 128;
}
int w = s.Width;
if (w < 1)
{
w = 1;
}
if (w > 128)
{
w = 128;
}
int tH = ItemHeight;
int x = (int)topLeft.X + tH - w;
int y = (int)topLeft.Y;
if (tH > h)
{
y += (tH - h) / 2;
}
Rectangle box = new Rectangle(x, y, w, h);
itemBox.SymbolBox = box;
item.LegendSymbolPainted(g, box);
topLeft.X += tH + 6;
}
private Size SizeItem(int offset, ILegendItem item, Graphics g)
{
if (item == null) return new Size(0, 0);
int width = offset + 30 + (int)g.MeasureString(item.LegendText, Font).Width;
int height = ItemHeight;
if(item.LegendSymbolMode == SymbolModes.Symbol)
{
Size s = item.GetLegendSymbolSize();
if (s.Height > ItemHeight) height = s.Height;
}
if (item.IsExpanded)
{
if (item.LegendItems != null)
{
foreach (ILegendItem child in item.LegendItems)
{
Size cs = SizeItem(offset + _indentation, child, g);
height += cs.Height;
if (cs.Width > width) width = cs.Width;
}
}
}
return new Size(width, height);
}
