/// <summary>
/// 重绘背景
/// </summary>
/// <param name="e">A PaintHeaderEventArgs that contains the event data</param>
protected override void OnPaintBackground(I3PaintRowHeaderEventArgs e)
{
base.OnPaintBackground(e);
if (e.Row != null && e.Row.IsSelected)
{
SolidBrush brush;
if (this.SelectedColor == Color.Empty)
{
brush = new SolidBrush(Color.Orange);
}
else
{
brush = new SolidBrush(this.SelectedColor);
}
e.Graphics.FillRectangle(brush, this.Bounds);
return;
}
if (e.Row == null)
{
I3ThemeManager.DrawRowHeader(e.Graphics, e.HeaderRect, I3RowHeaderStates.Normal);
}
else
{
I3ThemeManager.DrawRowHeader(e.Graphics, e.HeaderRect, (I3RowHeaderStates)e.Row.RowState);
}
}
/// <summary>
/// 重绘行头
/// </summary>
/// <param name="e">A PaintHeaderEventArgs that contains the event data</param>
public virtual void OnPaintRowHeader(I3PaintRowHeaderEventArgs e)
{
// paint the Column header's background
this.OnPaintBackground(e);
// paint the Column headers foreground
this.OnPaint(e);
}
/// <summary>
/// Raises the PaintBackground event
/// </summary>
/// <param name="e">A PaintHeaderEventArgs that contains the event data</param>
protected override void OnPaintBackground(I3PaintRowHeaderEventArgs e)
{
base.OnPaintBackground(e);
Color start = this.StartColor;
Color end = this.EndColor;
if (e.Row != null && e.Row.IsSelected)
{
start = this.SelectedColor;
if (start == Color.Empty)
{
start = Color.Orange;
}
end = ControlPaint.Light(start);
}
if (e.Row == null || e.Row.RowState != I3RowState.Pressed)
{
using (LinearGradientBrush brush = new LinearGradientBrush(e.HeaderRect, start, end, LinearGradientMode.Horizontal))
{
e.Graphics.FillRectangle(brush, e.HeaderRect);
}
using (Pen pen = new Pen(end))
{
e.Graphics.DrawLine(pen, e.HeaderRect.Left, e.HeaderRect.Top, e.HeaderRect.Right - 2, e.HeaderRect.Top);
e.Graphics.DrawLine(pen, e.HeaderRect.Left, e.HeaderRect.Top, e.HeaderRect.Left, e.HeaderRect.Bottom - 1);
}
using (Pen pen = new Pen(start))
{
e.Graphics.DrawLine(pen, e.HeaderRect.Right - 1, e.HeaderRect.Top, e.HeaderRect.Right - 1, e.HeaderRect.Bottom - 1);
e.Graphics.DrawLine(pen, e.HeaderRect.Left + 1, e.HeaderRect.Bottom - 1, e.HeaderRect.Right - 1, e.HeaderRect.Bottom - 1);
}
}
else
{
Color pressed = this.PressedColor;
if (pressed == Color.Empty)
{
pressed = ControlPaint.Light(start);
}
using (SolidBrush brush = new SolidBrush(pressed))
{
e.Graphics.FillRectangle(brush, e.HeaderRect);
}
using (Pen pen = new Pen(this.StartColor))
{
e.Graphics.DrawRectangle(pen, e.HeaderRect.X, e.HeaderRect.Y, e.HeaderRect.Width - 1, e.HeaderRect.Height - 1);
}
}
}
/// <summary>
/// Raises the Paint event
/// </summary>
/// <param name="e">A PaintHeaderEventArgs that contains the event data</param>
protected override void OnPaint(I3PaintRowHeaderEventArgs e)
{
base.OnPaint(e);
if (e.Row == null || e.Table.RowHeaderDisplayMode != I3RowHeaderDisplayMode.Num)
{
return;
}
Rectangle textRect = this.ClientRectangle;
//VisualStylesEnabled=true且列头按下时，文本显示区域向下、向右各移动1像素
if (!I3ThemeManager.VisualStylesEnabled && e.Row.RowState == I3RowState.Pressed)
{
textRect.X += 1;
textRect.Y += 1;
}
//计算绘制文本的起始点
StringAlignment old = this.StringFormat.Alignment;
this.StringFormat.Alignment = StringAlignment.Center;
//this.StringFormat.Trimming=EllipsisCharacter,指定文本超出范围时的剪切方式为以....替代
string text = (e.RowIndex + 1).ToString();
if (e.Row.Enabled)
{
e.Graphics.DrawString(text, this.Font, this.ForeBrush, textRect, this.StringFormat);
}
else
{
using (SolidBrush brush = new SolidBrush(SystemPens.GrayText.Color))
{
e.Graphics.DrawString(text, this.Font, brush, textRect, this.StringFormat);
}
}
//cal needsize
CalRowHeaderNeedHeight(e.Graphics, e.Row, text, this.Font, this.StringFormat);
this.StringFormat.Alignment = old;
}
/// <summary>
/// Raises the PaintBackground event
/// </summary>
/// <param name="e">A PaintHeaderEventArgs that contains the event data</param>
protected override void OnPaintBackground(I3PaintRowHeaderEventArgs e)
{
base.OnPaintBackground(e);
SolidBrush brush = this.BackBrush;
if (e.Row != null && e.Row.IsSelected)
{
if (this.SelectedColor == Color.Empty)
{
brush = new SolidBrush(Color.Orange);
}
else
{
brush = new SolidBrush(this.SelectedColor);
}
}
e.Graphics.FillRectangle(brush, this.Bounds);
}
/// <summary>
/// 重绘行头
/// Raises the Paint event
/// </summary>
/// <param name="e">A PaintHeaderEventArgs that contains the event data</param>
protected virtual void OnPaint(I3PaintRowHeaderEventArgs e)
{
}
/// <summary>
/// 重绘背景，子函数实现
/// Raises the PaintBackground event
/// </summary>
/// <param name="e">A PaintHeaderEventArgs that contains the event data</param>
protected virtual void OnPaintBackground(I3PaintRowHeaderEventArgs e)
{
}