public void Release()
{
if (_lineSymbol != null)
{
_lineSymbol.Release();
}
if (_textSymbol != null)
{
_textSymbol.Release();
}
_lineSymbol = null;
_textSymbol = null;
}
public void Release()
{
if (_symbol is ISymbol)
{
_symbol.Release();
}
_symbol = null;
_labelStrings.Clear();
}
private void RendererBox_DrawItem(object sender, DrawItemEventArgs e)
{
if (e.Index >= RendererBox.Items.Count || e.Index < 0)
{
return;
}
object item = RendererBox.Items[e.Index];
if (item is RendererItem)
{
SolidBrush b, f;
if ((e.State & DrawItemState.Selected) != 0)
{
b = (SolidBrush)Brushes.DarkBlue;
f = (SolidBrush)Brushes.White;
}
else
{
b = (SolidBrush)Brushes.White;
f = (SolidBrush)Brushes.Black;
}
using (System.Drawing.Font font = new Font("Arial", 10))
{
e.Graphics.FillRectangle(b, e.Bounds);
Rectangle rect = new Rectangle(e.Bounds.X + 20, e.Bounds.Y, e.Bounds.Width, e.Bounds.Height);
e.Graphics.DrawString(item.ToString(), font, f, rect);
rect = new Rectangle(5, e.Bounds.Y + 2, 11, 11);
e.Graphics.DrawImage(
(((RendererItem)item).ShowLegend ?
global::gView.Carto.Rendering.UI.Properties.Resources.CollapseIcon :
global::gView.Carto.Rendering.UI.Properties.Resources.ExpandIcon),
rect);
}
}
else if (item is LegendItem)
{
Rectangle rect = new Rectangle(20, e.Bounds.Top, 30, 20);
ILegendItem legendItem = ((LegendItem)item).Item;
if (legendItem != null)
{
if (legendItem is ISymbol)
{
if (legendItem is ITextSymbol)
{
ITextSymbol ts = ((ISymbol)legendItem).Clone() as ITextSymbol;
if (ts != null)
{
ts.Text = "Abc";
ts.TextSymbolAlignment = TextSymbolAlignment.Center;
ts.Angle = 0;
ts.HorizontalOffset = ts.VerticalOffset = 0;
SymbolPreview.Draw(e.Graphics, rect, ts);
ts.Release();
}
}
else
{
SymbolPreview.Draw(e.Graphics, rect, (ISymbol)legendItem);
}
}
if (legendItem.LegendLabel != String.Empty)
{
using (Font font = new Font("Arial", 9))
{
e.Graphics.DrawString(legendItem.LegendLabel, font, Brushes.Black, 52, e.Bounds.Top + e.Bounds.Height / 2 - font.Height / 2);
SizeF stringSize = e.Graphics.MeasureString(legendItem.LegendLabel, font);
RendererBox.HorizontalExtent = (int)Math.Max(RendererBox.HorizontalExtent, 52 + stringSize.Width);
}
}
}
}
}