public virtual void PaintCellBackground(Graphics dc,
Rectangle cellRect,
Node node,
TreeListColumn column,
TreeList.TextFormatting format,
object data)
{
Color c = Color.Transparent;
Point mousePoint = m_owner.PointToClient(Cursor.Position);
Node hoverNode = m_owner.CalcHitNode(mousePoint);
if (format.BackColor != Color.Transparent)
{
c = format.BackColor;
}
if (!m_owner.NodesSelection.Contains(node) && m_owner.FocusedNode != node &&
!(hoverNode == node && m_owner.RowOptions.HoverHighlight) &&
node.DefaultBackColor != Color.Transparent)
{
c = node.DefaultBackColor;
}
if (node.BackColor != Color.Transparent && !m_owner.NodesSelection.Contains(node) && m_owner.SelectedNode != node)
{
c = node.BackColor;
}
if (column.Index < node.IndexedBackColor.Length && node.IndexedBackColor[column.Index] != Color.Transparent)
{
c = node.IndexedBackColor[column.Index];
}
if (c != Color.Transparent)
{
Rectangle r = cellRect;
r.X -= Math.Max(0, column.CalculatedRect.Width - cellRect.Width);
r.Width += Math.Max(0, column.CalculatedRect.Width - cellRect.Width);
SolidBrush brush = new SolidBrush(c);
dc.FillRectangle(brush, r);
brush.Dispose();
}
}
public virtual void PaintCellPlusMinus(Graphics dc, Rectangle glyphRect, Node node, TreeListColumn column, TreeList.TextFormatting format)
{
if (!Application.RenderWithVisualStyles)
{
// find square rect first
int diff = glyphRect.Height - glyphRect.Width;
glyphRect.Y += diff / 2;
glyphRect.Height -= diff;
// draw 8x8 box centred
while (glyphRect.Height > 8)
{
glyphRect.Height -= 2;
glyphRect.Y += 1;
glyphRect.X += 1;
}
// make a box
glyphRect.Width = glyphRect.Height;
// clear first
SolidBrush brush = new SolidBrush(format.BackColor);
if (format.BackColor == Color.Transparent)
{
brush = new SolidBrush(m_owner.BackColor);
}
dc.FillRectangle(brush, glyphRect);
brush.Dispose();
// draw outline
Pen p = new Pen(SystemColors.ControlDark);
dc.DrawRectangle(p, glyphRect);
p.Dispose();
p = new Pen(SystemColors.ControlText);
// reduce box for internal lines
glyphRect.X += 2; glyphRect.Y += 2;
glyphRect.Width -= 4; glyphRect.Height -= 4;
// draw horizontal line always
dc.DrawLine(p, glyphRect.X, glyphRect.Y + glyphRect.Height / 2, glyphRect.X + glyphRect.Width, glyphRect.Y + glyphRect.Height / 2);
// draw vertical line if this should be a +
if (!node.Expanded)
{
dc.DrawLine(p, glyphRect.X + glyphRect.Width / 2, glyphRect.Y, glyphRect.X + glyphRect.Width / 2, glyphRect.Y + glyphRect.Height);
}
p.Dispose();
return;
}
VisualStyleElement element = VisualStyleElement.TreeView.Glyph.Closed;
if (node.Expanded)
{
element = VisualStyleElement.TreeView.Glyph.Opened;
}
if (VisualStyleRenderer.IsElementDefined(element))
{
VisualStyleRenderer renderer = new VisualStyleRenderer(element);
renderer.DrawBackground(dc, glyphRect);
}
}
public virtual void PaintCellText(Graphics dc,
Rectangle cellRect,
Node node,
TreeListColumn column,
TreeList.TextFormatting format,
object data)
{
if (data != null)
{
cellRect = AdjustRectangle(cellRect, format.Padding);
//dc.DrawRectangle(Pens.Black, cellRect);
Color color = format.ForeColor;
if (node.ForeColor != Color.Transparent)
{
color = node.ForeColor;
}
if (m_owner.FocusedNode == node && Application.RenderWithVisualStyles == false && m_owner.Focused)
{
color = SystemColors.HighlightText;
}
TextFormatFlags flags = TextFormatFlags.EndEllipsis | format.GetFormattingFlags();
Font f = m_owner.Font;
Font disposefont = null;
if (node.Bold && node.Italic)
{
disposefont = f = new Font(f, FontStyle.Bold | FontStyle.Italic);
}
else if (node.Bold)
{
disposefont = f = new Font(f, FontStyle.Bold);
}
else if (node.Italic)
{
disposefont = f = new Font(f, FontStyle.Italic);
}
string datastring = "";
if (m_converter != null)
{
datastring = m_converter(column, data);
}
else
{
datastring = data.ToString();
}
TextRenderer.DrawText(dc, datastring, f, cellRect, color, flags);
Size sz = TextRenderer.MeasureText(dc, datastring, f, new Size(1000000, 10000), flags);
int treecolumn = node.TreeColumn;
if (treecolumn < 0)
{
treecolumn = node.OwnerView.TreeColumn;
}
if (column.Index == treecolumn)
{
node.ClippedText = (sz.Width > cellRect.Width || sz.Height > cellRect.Height);
}
if (disposefont != null)
{
disposefont.Dispose();
}
}
}