private Color GetRowNumberBackgroundColor(TreeListRowNumberRenderEventArgs e)
{
if (e.DrawState == DrawState.Selected)
{
return(e.TreeList.Focused ? SystemColors.Highlight : SystemColors.ButtonFace);
}
else
{
return(Color.FromArgb(252, 252, 252));
}
}
/// <summary>
/// 绘制行号。
/// </summary>
/// <param name="e"></param>
public virtual void DrawRowNumber(TreeListRowNumberRenderEventArgs e)
{
using (var brush = new SolidBrush(GetRowNumberBackgroundColor(e)))
{
e.Graphics.FillRectangle(brush, e.Bounds);
}
var flags = TextFormatFlags.EndEllipsis | TextFormatFlags.VerticalCenter | TextFormatFlags.PreserveGraphicsClipping | TextFormatFlags.HorizontalCenter;
TextRenderer.DrawText(e.Graphics, e.Index.ToString(), e.TreeList.Font, e.Bounds, Color.Black, flags);
}
private void DrawRowNumber(TreeListRowNumberRenderEventArgs e, bool setClip = true)
{
e.Graphics.KeepClip(_bound.WorkBound, () =>
{
Renderer.DrawRowNumber(e);
if (e.TreeList.ShowGridLines)
{
Renderer.DrawCellGridLines(e.Graphics, e.Bounds);
}
}, setClip);
}
/// <summary>
/// 绘制行号。
/// </summary>
/// <param name="e"></param>
public virtual void DrawRowNumber(TreeListRowNumberRenderEventArgs e)
{
using (var brush = new SolidBrush(GetRowNumberBackgroundColor(e)))
{
e.Graphics.FillRectangle(brush, e.Bounds);
}
var flags = TextFormatFlags.EndEllipsis | TextFormatFlags.VerticalCenter | TextFormatFlags.PreserveGraphicsClipping | TextFormatFlags.HorizontalCenter;
var color = e.DrawState == DrawState.Selected && e.TreeList.Focused ? SystemColors.Window : SystemColors.WindowText;
TextRenderer.DrawText(e.Graphics, e.Index.ToString(), e.TreeList.Font, e.Bounds, color, flags);
}
private void DrawItem(TreeListItemRenderEventArgs e, bool setClip = true)
{
e.Graphics.KeepClip(_bound.ItemBound, () =>
{
Renderer.DrawItem(e);
DrawCells(e.Graphics, e.Item.Cells, e.Bounds, e.DrawState);
}, setClip);
if (ShowRowNumber)
{
var e3 = new TreeListRowNumberRenderEventArgs(this, RowNumberIndex + e.Item.DataIndex, e.Graphics, new Rectangle(_bound.WorkBound.X, e.Bounds.Y, RowNumberWidth, e.Bounds.Height));
e.Graphics.KeepClip(_bound.RowNumberBound, () =>
{
e3.DrawState = e.DrawState;
DrawRowNumber(e3);
});
}
}
