protected override void OnRefresh(HeaderModule.Section section)
{
using (Region rgn = new Region())
{
if ((section & HeaderModule.Section.Headers) != 0)
{
rgn.Union(new Rectangle(0, 0, _tabsbtn.X, HeaderHeight));
}
if ((section & HeaderModule.Section.Browser) != 0)
{
rgn.Union(_tabsbtn);
}
if ((section & HeaderModule.Section.CloseButton) != 0)
{
rgn.Union(_closebtn);
}
//update control
this.Owner.Invalidate(rgn, false);
this.Owner.Update();
}
}
protected override void OnReload(HeaderModule.Section section, ITabPage start)
{
if ((section & HeaderModule.Section.Headers) != 0)
{
#region remeasure headers
bool remeasure = start == null;
//manage paths array
while (_paths.Count > this.Owner.Pages.Count)
{
GraphicsPath path = (GraphicsPath)_paths[0];
_paths.RemoveAt(0);
path.Dispose();
}
while (_paths.Count < this.Owner.Pages.Count)
{
_paths.Add(new GraphicsPath());
}
//remeasure tabs
int x = 1, width;
using (Graphics gr = this.Owner.CreateGraphics())
{
for (int i = 0; i < this.Owner.Pages.Count; i++)
{
ITabPage page = this.Owner.Pages[i];
GraphicsPath path = (GraphicsPath)_paths[i];
if (start == page)
{
remeasure = true;
}
if (!remeasure)
{
x = (int)(path.GetBounds().Right) - 10;
continue;
}
#region measure header
if (page.Caption == null || page.Caption == "")
{
width = 24;
}
else
{
width = Math.Min(this.MaxHeaderWidth,
24 + (int)gr.MeasureString(page.Caption, _fontactive).Width);
}
path.Reset();
path.AddCurve( //create tab shape
new Point[] { new Point(x, 19),
new Point(x + 12, 7),
new Point(x + 19, 3) }, 0.7f);
path.AddLine(x + 19, 3, x + width - 2, 3);
path.AddLine(x + width, 5, x + width, 19);
#endregion
x += width - 10;
}
}
#endregion
}
if ((section & HeaderModule.Section.Browser) != 0)
{
#region tabs button
//manage contextmenu
while (_mnu.MenuItems.Count > this.Owner.Pages.Count)
{
MenuItem item = _mnu.MenuItems[0];
_mnu.MenuItems.RemoveAt(0);
item.Dispose();
}
while (_mnu.MenuItems.Count < this.Owner.Pages.Count)
{
_mnu.MenuItems.Add(new MenuItem("item",
new EventHandler(MenuItem_Click)));
}
//reset defaultitems
foreach (MenuItem item in _mnu.MenuItems)
{
item.DefaultItem = false;
}
//update captions
for (int i = 0; i < this.Owner.Pages.Count; i++)
{
ITabPage page = this.Owner.Pages[i];
_mnu.MenuItems[i].Text = page.Caption;
if (page == this.Owner.SelectedPage)
{
_mnu.MenuItems[i].DefaultItem = true;
}
}
_tabsstate = _mnu.MenuItems.Count > 0 ?
ButtonState.Normal : ButtonState.Inactive;
#endregion
}
if ((section & HeaderModule.Section.CloseButton) != 0)
{
#region close button
ButtonState state = (
this.Owner.SelectedPage != null &&
this.Owner.SelectedPage.CanClose) ?
ButtonState.Normal :
ButtonState.Inactive;
if (_closestate != state)
{
_closestate = state;
Refresh(Section.CloseButton);
}
#endregion
}
}
