protected override void OnDrawItemHeader(DrawHeaderArgs e)
{
if (e.HeaderHeight < 1)
{
return;
}
int y = e.HeaderHeight - e.TitleBarHeight;
#region erase corners
if (e.HasParent)
{
e.ParentRectangle.Offset(-e.Location.X, -e.Location.Y);
this.DrawBarBackground(e.Graphics,
e.ParentRectangle,
new Rectangle(0, 0, e.ItemBounds.Width, e.HeaderHeight));
}
else
{
e.Graphics.FillRectangle(SystemBrushes.Control, 0, 0, e.ItemBounds.Width, e.HeaderHeight);
}
#endregion
#region draw backgrounds
if (e.Special)
{
this._blnd.Colors = this._colors[1];
}
else
{
this._blnd.Colors = this._colors[0];
}
#region draw horizontal
this._blnd.Positions = this._positions[0];
this._lnbrs.InterpolationColors = this._blnd;
this._lnbrs.Transform = new Matrix((float)e.ItemBounds.Width, 0f, 0f, 1f, 0f, (float)y);
e.Graphics.FillRectangle(this._lnbrs, 0, y, e.ItemBounds.Width, e.TitleBarHeight);
#endregion
#region draw vertical
this._blnd.Colors = this._colors[2];
this._blnd.Positions = _positions[1];
this._lnbrs.InterpolationColors = this._blnd;
this._lnbrs.Transform = new Matrix(0f, e.TitleBarHeight, 1f, 0f, 0f, (float)y);
e.Graphics.FillRectangle(this._lnbrs, 0, y, e.ItemBounds.Width, e.TitleBarHeight);
#endregion
#endregion
#region draw outline
this._pn.Color = _colors[5][0];
e.Graphics.DrawLines(this._pn, new Point[]
{
new Point(0, y + e.TitleBarHeight - 1),
new Point(0, y),
new Point(e.ItemBounds.Right - 1, y),
new Point(e.ItemBounds.Right - 1, y + e.TitleBarHeight - 1)
});
this._pn.Color = _colors[5][1];
e.Graphics.DrawRectangle(this._pn, 1, y + 1, e.ItemBounds.Width - 3, e.TitleBarHeight - 2);
#endregion
int stringoffx = 16;
if (e.TitleImage != null)
{
e.Graphics.DrawImageUnscaled(e.TitleImage, 1, 0);
stringoffx = Math.Max(16, e.TitleImage.Width);
}
#region draw string / button
e.Graphics.DrawString(e.Caption, this._fnt, Brushes.White,
new Rectangle(stringoffx, y + 1, e.ItemBounds.Width - (stringoffx + 26), e.TitleBarHeight), this._fmt);
if (e.Collapsed)
{
DrawArrowDown(e.Graphics, e.ItemBounds.Right - 18, y + e.TitleBarHeight / 2 - 1);
}
else
{
DrawArrowUp(e.Graphics, e.ItemBounds.Right - 18, y + e.TitleBarHeight / 2 - 3);
}
#endregion
}
protected override void OnDrawItemHeader(DrawHeaderArgs e)
{
if(e.HeaderHeight<1) return;
int y=e.HeaderHeight-e.TitleBarHeight;
#region erase corners
if (e.HasParent)
{
e.ParentRectangle.Offset(-e.Location.X,-e.Location.Y);
this.DrawBarBackground(e.Graphics,
e.ParentRectangle,
new Rectangle(0,0,e.ItemBounds.Width,e.HeaderHeight));
}
else
{
e.Graphics.FillRectangle(SystemBrushes.Control,0,0,e.ItemBounds.Width,e.HeaderHeight);
}
#endregion
#region draw backgrounds
if (e.Special)
{
this._blnd.Colors=this._colors[0];
this._pn.Color=this._colors[3][0];
}
else
{
this._blnd.Colors=this._colors[1];
this._pn.Color=this._colors[3][1];
}
this._blnd.Positions=this._positions[0];
this._lnbrs.InterpolationColors=this._blnd;
this._lnbrs.Transform=new Matrix(0f,(float)e.TitleBarHeight,1f,0f,1f,(float)y);
e.Graphics.FillRectangle(this._lnbrs,1,y+1,e.ItemBounds.Width-1,e.TitleBarHeight-1);
#endregion
#region draw outline
if (e.HasParent)
{
e.Graphics.DrawLines(this._pn,new Point[]
{
new Point(0,y+e.TitleBarHeight),
new Point(0,y+1),
new Point(1,y),
new Point(e.ItemBounds.Right-2,y),
new Point(e.ItemBounds.Right-1,y+1),
new Point(e.ItemBounds.Right-1,y+e.TitleBarHeight)
});
}
else
{
e.Graphics.DrawLines(this._pn,new Point[]
{
new Point(0,y+e.TitleBarHeight),
new Point(0,y),
new Point(e.ItemBounds.Right-1,y),
new Point(e.ItemBounds.Right-1,y+e.TitleBarHeight)
});
}
#endregion
int stringoffx=16;
if (e.TitleImage!=null)
{
e.Graphics.DrawImageUnscaled(e.TitleImage,1,0);
stringoffx=Math.Max(16,e.TitleImage.Width);
}
#region draw string / button
if (e.MouseCapture)
this._slbrs.Color=this._colors[3][3];
else
this._slbrs.Color=this._colors[3][2];
e.Graphics.DrawString(e.Caption,this._fnt,this._slbrs,
new Rectangle(stringoffx,y+1,e.ItemBounds.Width-(stringoffx+26),e.TitleBarHeight),this._fmt);
if (e.Collapsed)
{
DrawArrowDown(e.Graphics,e.ItemBounds.Right-18,y+e.TitleBarHeight/2-4);
DrawArrowDown(e.Graphics,e.ItemBounds.Right-18,y+e.TitleBarHeight/2);
}
else
{
DrawArrowUp(e.Graphics,e.ItemBounds.Right-18,y+e.TitleBarHeight/2-5);
DrawArrowUp(e.Graphics,e.ItemBounds.Right-18,y+e.TitleBarHeight/2-1);
}
#endregion
}
protected abstract void OnDrawItemHeader(DrawHeaderArgs e);
public void DrawItemHeader(DrawHeaderArgs e)
{
if (e.IsEmpty()) return;
this.OnDrawItemHeader(e);
}
protected abstract void OnDrawItemHeader(DrawHeaderArgs e);
public void DrawItemHeader(DrawHeaderArgs e)
{
if (e.IsEmpty()) return;
this.OnDrawItemHeader(e);
}