private TreeNode CreateThemeRuleNode(LayerNodeMetadata layer, ThemeCategory themeCat, double viewScale, string labelText, int geomType, int categoryIndex)
{
MgLayerBase lyr = layer.Layer;
MgByteReader icon = _provider.GenerateLegendImage(lyr.LayerDefinition,
viewScale,
16,
16,
"PNG", //NOXLATE
geomType,
categoryIndex);
legendCallCount++;
TreeNode node = new TreeNode();
node.Text = labelText;
if (icon != null)
{
try
{
byte[] b = new byte[icon.GetLength()];
icon.Read(b, b.Length);
using (var ms = new MemoryStream(b))
{
var tag = new LayerThemeNodeMetadata(false, Image.FromStream(ms), labelText);
layer.AddThemeNode(themeCat, tag);
node.Tag = tag;
}
}
finally
{
icon.Dispose();
}
}
return node;
}
private TreeNode CreateCompressedThemeNode(LayerNodeMetadata layer, ThemeCategory cat, int count)
{
TreeNode node = new TreeNode();
node.Text = string.Format(Strings.CountOtherStyles, count);
node.ImageKey = node.SelectedImageKey = IMG_OTHER;
var meta = new LayerThemeNodeMetadata(true, Properties.Resources.icon_etc, node.Text);
node.Tag = meta;
layer.AddThemeNode(cat, meta);
return node;
}