protected virtual void OnPostDrawNode(PostDrawTreeNodeEventArgs e)
{
EventHandler<PostDrawTreeNodeEventArgs> handler = base.Events[EventPostDrawNode] as EventHandler<PostDrawTreeNodeEventArgs>;
if (handler != null)
{
handler(this, e);
}
}
private void WmCustomDraw(ref Message m)
{
TreeNode node;
TreeNodeStates itemState;
switch (Microsoft.Win32.NMCUSTOMDRAW.GetDrawStage(m.LParam))
{
case CDDS.CDDS_ITEMPREPAINT:
node = this.NodeFromHandle(Microsoft.Win32.NMCUSTOMDRAW.GetItemSpec(m.LParam));
if (node != null)
{
if (!base.ClientRectangle.IntersectsWith(Microsoft.Win32.NMCUSTOMDRAW.GetRect(m.LParam)))
{
m.Result = (IntPtr) 4L;
}
else
{
System.Drawing.Color backColor = Microsoft.Win32.NMTVCUSTOMDRAW.GetBackColor(m.LParam);
System.Drawing.Color foreColor = Microsoft.Win32.NMTVCUSTOMDRAW.GetForeColor(m.LParam);
itemState = (TreeNodeStates) Microsoft.Win32.NMCUSTOMDRAW.GetItemState(m.LParam);
IntPtr ptr = Windows.SendMessage(base.Handle, 0x110a, (IntPtr) 8L, IntPtr.Zero);
if ((ptr != IntPtr.Zero) && (node.Handle == ptr))
{
itemState |= TreeNodeStates.Marked;
}
GetNodeColorsEventArgs e = new GetNodeColorsEventArgs(node, itemState, backColor, foreColor);
this.OnGetNodeColors(e);
if (e.BackColor != backColor)
{
Microsoft.Win32.NMTVCUSTOMDRAW.SetBackColor(m.LParam, e.BackColor);
}
if (e.ForeColor != foreColor)
{
Microsoft.Win32.NMTVCUSTOMDRAW.SetForeColor(m.LParam, e.ForeColor);
}
if (base.DrawMode != TreeViewDrawMode.Normal)
{
m.Result = (IntPtr) (((int) m.Result) | 0x10);
}
}
break;
}
break;
case CDDS.CDDS_ITEMPOSTPAINT:
node = this.NodeFromHandle(Microsoft.Win32.NMCUSTOMDRAW.GetItemSpec(m.LParam));
if (node != null)
{
Rectangle bounds = node.Bounds;
if (base.ClientRectangle.IntersectsWith(bounds))
{
itemState = (TreeNodeStates) Microsoft.Win32.NMCUSTOMDRAW.GetItemState(m.LParam);
using (Graphics graphics = Graphics.FromHdcInternal(Microsoft.Win32.NMCUSTOMDRAW.GetHdc(m.LParam)))
{
PostDrawTreeNodeEventArgs args2 = new PostDrawTreeNodeEventArgs(graphics, node, bounds, itemState);
this.OnPostDrawNode(args2);
}
}
}
break;
}
}
protected override void OnPostDrawNode(PostDrawTreeNodeEventArgs e)
{
if (base.ImageList != null)
{
IVirtualItem tag = e.Node.Tag as IVirtualItem;
if (tag != null)
{
Rectangle iconRect = this.GetIconRect(e.Node);
if (!iconRect.IsEmpty && base.ClientRectangle.IntersectsWith(iconRect))
{
Image image = VirtualIcon.GetIcon(tag, ImageHelper.DefaultSmallIconSize, this.WatchChanges ? IconStyle.CanUseDelayedExtract : ((IconStyle) 0));
if (image != null)
{
Color empty = Color.Empty;
float blendLevel = 0.7f;
VirtualHighligher highlighter = VirtualIcon.GetHighlighter(tag);
if ((highlighter != null) && highlighter.AlphaBlend)
{
empty = highlighter.BlendColor;
blendLevel = highlighter.BlendLevel;
}
if ((base.HotTracking && !base.FullRowSelect) && !base.ExplorerTheme)
{
using (Brush brush = new SolidBrush(this.BackColor))
{
e.Graphics.FillRectangle(brush, iconRect);
}
}
lock (image)
{
iconRect.Y += (iconRect.Height - image.Height) / 2;
if (empty.IsEmpty)
{
e.Graphics.DrawImage(image, iconRect.Location);
}
else
{
ImageHelper.DrawBlendImage(e.Graphics, image, empty, blendLevel, iconRect.X, iconRect.Y);
}
}
base.OnPostDrawNode(e);
}
}
}
}
}
