#16 Painting does not occur for a column when horizontal scroll

[Anonymous]

Painting does not occur for a column when horizontal scrolling causes the beginning of the column to be occluded.

TreeViewAdv, UseColumns, 2 columns of initial width 100 but TreeViewAdv width is only 150.

When I scroll over to see the full 2nd column, the 1st column completely stops drawing. It should still draw the half that is showing.

alexhuang atly gorilla dotly com dotly tw

[Nobody/Anonymous]

Logged In: NO

The problem occurs with at least NodeTextBox and NodePlusMinus. I have not tested other types of NodeControls.

[Nobody/Anonymous]

Logged In: NO

This is my fix I implemented in TreeViewAdv.Draw in the DrawNode(TreeNodeAdv node, DrawContext context) method. (line 188.)

Replace :
if (item.Bounds.X >= OffsetX && item.Bounds.X - OffsetX < this.Bounds.Width)
With :
if(item.Bounds.Right >= OffsetX)

- Mark Bollman.

[Nobody/Anonymous]

Logged In: NO

TreeViewAdv.Draw.cs

if (x + c.Width >= OffsetX && x <= OffsetX + this.Bounds.Width)// skip invisible columns
...
if (item.Bounds.Right >= OffsetX && item.Bounds.Left <= OffsetX + this.Bounds.Width)// skip invisible nodes

That would be more correct (imho :) )

[Nobody/Anonymous]

In TreeViewAdvDraw.cs:

private void DrawColumnHeaders(Graphics gr)
{
PerformanceAnalyzer.Start("DrawColumnHeaders");
ReorderColumnState reorder = Input as ReorderColumnState;
int x = 0;
TreeColumn.DrawBackground(gr, new Rectangle(0, 0, ClientRectangle.Width + 2, ColumnHeaderHeight - 1), false, false);
gr.TranslateTransform(-OffsetX, 0);
foreach (TreeColumn c in Columns)
{
if (c.IsVisible)
{
if (x + c.Width >= OffsetX && x - OffsetX < this.Bounds.Width)// skip invisible columns
{
Rectangle rect = new Rectangle(x, 0, c.Width, ColumnHeaderHeight - 1);
gr.SetClip(rect);
bool pressed = ((Input is ClickColumnState || reorder != null) && ((Input as ColumnState).Column == c));
c.Draw(gr, rect, Font, pressed, _hotColumn == c);
gr.ResetClip();

if (reorder != null && reorder.DropColumn == c)
TreeColumn.DrawDropMark(gr, rect);
}
x += c.Width;
}
}
and:

public void DrawNode(TreeNodeAdv node, DrawContext context)
{
foreach (NodeControlInfo item in GetNodeControls(node))
{
if (item.Bounds.X + item.Bounds.Width >= OffsetX && item.Bounds.X - OffsetX < this.Bounds.Width)// skip invisible nodes
{
context.Bounds = item.Bounds;
context.Graphics.SetClip(context.Bounds);
item.Control.Draw(node, context);
context.Graphics.ResetClip();
}
}
}