private void TabHeader_OnControlAdded(object sender,
ControlEventArgs e)
{
if (typeof(TabButton).IsAssignableFrom(e.Control.GetType()))
{
TabButton tabButton = (TabButton)e.Control;
tabButton.Click += new EventHandler(TabButton_OnClick);
tabButton.CheckedChanged += new EventHandler(TabButton_OnCheckedChanged);
#if DRAG_AND_DROP_SUPPORT
tabButton.DragOver += new DragEventHandler(Control_DragOver);
tabButton.DragDrop += new DragEventHandler(Control_DragDrop);
tabButton.DragStarting += new DragEventHandler(Control_DragStarting);
#endif
}
}
///
///
///
public TabHeader()
{
m_LeftFirst = 0;
m_Scrolling = false;
m_Multiselect = false;
m_ActiveTab = null;
m_LastShiftKeyTab = null;
this.ControlAdded += new ControlEventHandler(TabHeader_OnControlAdded);
this.ControlRemoved += new ControlEventHandler(TabHeader_OnControlRemoved);
#if DRAG_AND_DROP_SUPPORT
this.DragOver += new DragEventHandler(Control_DragOver);
this.DragDrop += new DragEventHandler(Control_DragDrop);
#endif
}
protected override void OnHeaderButtonCheckedChanged(object sender,
System.EventArgs e)
{
base.OnHeaderButtonCheckedChanged(sender, e);
if (this.Visible)
{
if (this.SelectedButton == null)
{
foreach (Control c in Controls)
{
if (typeof(TabButton).IsAssignableFrom(c.GetType()))
{
TabButton tabButton = (TabButton)c;
if (tabButton.Visible)
{
this.SelectedButton = tabButton;
break;
}
}
}
}
else
{
if (!this.SelectedButton.Checked)
{
this.SelectedButton.Checked = true;
RefreshLayout();
OnSelectedTabChanged(System.EventArgs.Empty);
}
}
}
else
{
if (this.SelectedButton != null)
{
this.SelectedButton.Checked = false;
RefreshLayout();
OnSelectedTabChanged(System.EventArgs.Empty);
}
}
}
private void TabHeader_OnControlRemoved(object sender,
ControlEventArgs e)
{
if (typeof(TabButton).IsAssignableFrom(e.Control.GetType()))
{
TabButton tabButton = (TabButton)e.Control;
tabButton.Click -= new EventHandler(TabButton_OnClick);
tabButton.CheckedChanged -= new EventHandler(TabButton_OnCheckedChanged);
#if DRAG_AND_DROP_SUPPORT
if (this.m_ActiveTab == tabButton)
{
this.m_ActiveTab = null; // unselect
}
if (this.m_LastShiftKeyTab == tabButton)
{
this.m_LastShiftKeyTab = null; // unselect
}
tabButton.DragOver -= new DragEventHandler(Control_DragOver);
tabButton.DragDrop -= new DragEventHandler(Control_DragDrop);
tabButton.DragStarting -= new DragEventHandler(Control_DragStarting);
#endif
}
}
/*public void AddTab(int index, TabButton tab, Object o)
* {
* Controls.Add(tab);
* RefreshLayout();
* }*/
//
//
//
public void RefreshLayout()
{
int u, i;
bool bs = !(m_SrcollRightButton == null || m_ScrollLeftButton == null);
Size size = this.Size;
Size isize;
Size scrollersSize;
if (bs)
{
isize = m_SrcollRightButton.Size;
}
else
{
isize = new Size(0, 0);
}
if (m_Vertical)
{
scrollersSize = new Size(isize.Width, isize.Height * 2 + 5);
}
else
{
scrollersSize = new Size(isize.Width * 2 + 5, isize.Height * 2);
}
// calculate the sum width of all tabs... need scroling????
int totalWidth = 0;
int tabCnt = 0;
ArrayList alWidths = new ArrayList();
foreach (Control c in Controls)
{
if (typeof(TabButton).IsAssignableFrom(c.GetType()))
{
TabButton tabButton = (TabButton)c;
if (tabButton.Visible)
{
if (m_Vertical)
{
totalWidth += tabButton.Size.Height;
alWidths.Add(tabButton.Size.Height);
}
else
{
totalWidth += tabButton.Size.Width;
alWidths.Add(tabButton.Size.Width);
}
tabCnt++;
}
}
}
totalWidth += (tabCnt - 1) * m_Interval;
#region Vertical
if (m_Vertical)
{
if (totalWidth >= size.Height)
{
m_Scrolling = bs & true;
size.Height -= scrollersSize.Height;
if (m_LeftFirst < 0)
{
m_LeftFirst = 0;
}
// i = number of visible tabs from right side
for (u = 0, i = 0; i < alWidths.Count; i++)
{
u += (int)alWidths[alWidths.Count - i - 1];
if (i > 0)
{
u += m_Interval;
}
if (u > size.Height)
{
break;
}
}
if (m_LeftFirst > (tabCnt - i))
{
m_LeftFirst = tabCnt - i;
}
}
else
{
m_LeftFirst = 0;
m_Scrolling = false;
}
}
else
{
if (totalWidth >= size.Width)
{
m_Scrolling = true & bs;
size.Width -= scrollersSize.Width;
if (m_LeftFirst < 0)
{
m_LeftFirst = 0;
}
// i = number of visible tabs from right side
for (u = 0, i = 0; i < alWidths.Count; i++)
{
u += (int)alWidths[alWidths.Count - i - 1];
if (i > 0)
{
u += m_Interval;
}
if (u > size.Width)
{
break;
}
}
if (m_LeftFirst > (tabCnt - i))
{
m_LeftFirst = tabCnt - i;
}
}
else
{
m_LeftFirst = 0;
m_Scrolling = false;
}
}
#endregion
//
u = i = 0;
foreach (Control c in Controls)
{
if (typeof(TabButton).IsAssignableFrom(c.GetType()))
{
TabButton tabButton = (TabButton)c;
if (tabButton.Visible)
{
int ci = i++;
if (m_LeftFirst > ci)
{
tabButton.BaseVisible = false;
continue;
}
if (m_Vertical)
{
Size curImgSize = tabButton.Size;
tabButton.SetBounds(0, u, curImgSize.Width, curImgSize.Height);
u += curImgSize.Height;
tabButton.BaseVisible = (m_LeftFirst == ci) || !(u > size.Height) | !bs;
}
else
{
Size curImgSize = tabButton.Size;
tabButton.SetBounds(u, 0, curImgSize.Width, curImgSize.Height);
u += curImgSize.Width;
tabButton.BaseVisible = (m_LeftFirst == ci) || !(u > size.Width) | !bs;
}
u += m_Interval;
}
else
{
tabButton.BaseVisible = false;
}
}
}
#region Scrolling
//
if (m_Scrolling)
{
if (m_Vertical)
{
m_ScrollLeftButton.SetBounds(5,
ClientRectangle.Bottom - scrollersSize.Height,
isize.Width, isize.Height);
m_SrcollRightButton.SetBounds(5,
ClientRectangle.Bottom - scrollersSize.Height + isize.Width,
isize.Width, isize.Height);
}
else
{
m_ScrollLeftButton.SetBounds(ClientRectangle.Right - scrollersSize.Width,
(size.Height / 2) - (isize.Height / 2),
isize.Width, isize.Height);
m_SrcollRightButton.SetBounds(ClientRectangle.Right - scrollersSize.Width + isize.Width,
(size.Height / 2) - (isize.Height / 2),
isize.Width, isize.Height);
}
m_ScrollLeftButton.Visible = true;
m_SrcollRightButton.Visible = true;
}
else
{
if (m_ScrollLeftButton != null)
{
m_ScrollLeftButton.Visible = false;
}
if (m_SrcollRightButton != null)
{
m_SrcollRightButton.Visible = false;
}
}
#endregion
}
private void TabButton_OnClick(object sender,
System.EventArgs e)
{
if (sender == null || !typeof(TabButton).IsAssignableFrom(sender.GetType()))
{
return;
}
TabButton currentButton = (TabButton)sender;
if (!m_Multiselect)
{
m_LastShiftKeyTab = null;
this.SelectedButton = currentButton;
}
else
{
// Multiselect
System.Windows.Forms.Keys keys = ModifierKeys;
bool bCtrlPressed = (keys & Keys.Control) == Keys.Control;
bool bShiftPressed = (keys & Keys.Shift) == Keys.Shift;
if (bCtrlPressed)
{
m_LastShiftKeyTab = null;
if (currentButton != null)
{
currentButton.Checked = !currentButton.Checked;
}
if (m_ActiveTab == currentButton)
{
if (!currentButton.Checked)
{
m_ActiveTab = null;
// m_ActiveTab = first checked
foreach (Control c in Controls)
{
if (typeof(TabButton).IsAssignableFrom(c.GetType()))
{
TabButton tabButton = (TabButton)c;
if (tabButton.Visible && tabButton.Checked)
{
m_ActiveTab = tabButton;
break;
}
}
} // foreach
}
}
else
{
m_ActiveTab = currentButton;
}
}
else if (bShiftPressed && currentButton != null)
{
// TODO: ShiftKeyUp -- m_ActiveTab = currentButton
m_LastShiftKeyTab = currentButton;
int first = -1, last = -1, m = -1;
// has no selection ? m_ActiveTab = first item from container
if (m_ActiveTab == null)
{
foreach (Control c in Controls)
{
if (typeof(TabButton).IsAssignableFrom(c.GetType()))
{
TabButton tabButton = (TabButton)c;
if (tabButton.Visible)
{
m_ActiveTab = tabButton;
break;
}
}
}
}
// get btn range to be checked
if (m_Vertical)
{
first = currentButton.Top + currentButton.Height / 2;
last = m_ActiveTab.Top + m_ActiveTab.Height / 2;
}
else
{
first = currentButton.Left + currentButton.Width / 2;
last = m_ActiveTab.Left + m_ActiveTab.Width / 2;
}
if (first > last)
{
m = last;
last = first;
first = m;
}
// check btns
foreach (Control c in Controls)
{
if (typeof(TabButton).IsAssignableFrom(c.GetType()))
{
TabButton tabButton = (TabButton)c;
if (tabButton.Visible)
{
if (m_Vertical)
{
m = tabButton.Top + tabButton.Height / 2;
}
else
{
m = tabButton.Left + tabButton.Width / 2;
}
if (first <= m && last >= m)
{
tabButton.Checked = true;
}
else
{
tabButton.Checked = false;
}
}
}
} // foreach
}
else
{
foreach (Control c in Controls)
{
if (typeof(TabButton).IsAssignableFrom(c.GetType()))
{
TabButton tabButton = (TabButton)c;
tabButton.Checked = currentButton == tabButton;
}
}
m_ActiveTab = currentButton;
}
RefreshLayout();
OnSelectedTabChanged(System.EventArgs.Empty);
}
}
