private void DrawTab(Graphics g, int index)
{
Rectangle rc = GetTabRect(index);
if (rc.IsEmpty)
{
return;
}
GraphicsPath gp = BuildBorderPath(rc);
using ( gp )
{
if (index == _activeTabIndex)
{
g.FillPath(GUIControls.ColorScheme.GetBrush(_colorScheme, "ResourceTypeTabs.ActiveBackground",
rc, SystemBrushes.Control), gp);
}
else
{
g.FillPath(GUIControls.ColorScheme.GetBrush(_colorScheme, "ResourceTypeTabs.InactiveBackground",
rc, SystemBrushes.Control), gp);
Rectangle rcGradient = new Rectangle(rc.Left, rc.Bottom - 6, rc.Width, 6);
g.FillRectangle(GUIControls.ColorScheme.GetBrush(_colorScheme, "ResourceTypeTabs.InactiveBackgroundBottom",
rcGradient, SystemBrushes.Control), rcGradient);
}
g.DrawPath(GUIControls.ColorScheme.GetPen(_colorScheme,
(index == _activeTabIndex) ? "PaneCaption.Border" : "ResourceTypeTabs.Border",
Pens.Black), gp);
}
string tabText = ((TabBarTab)_tabs [index]).Text;
IntPtr hdc = g.GetHdc();
try
{
Color clrText = (index == _activeTabIndex)
? GUIControls.ColorScheme.GetColor(_colorScheme, "ResourceTypeTabs.ActiveText", Color.Black)
: GUIControls.ColorScheme.GetColor(_colorScheme, "ResourceTypeTabs.InactiveText", Color.Black);
int oldColor = Win32Declarations.SetTextColor(hdc, ColorTranslator.ToWin32(clrText));
IntPtr oldFont = Win32Declarations.SelectObject(hdc, _fontHandle);
BackgroundMode oldBkMode = Win32Declarations.SetBkMode(hdc, BackgroundMode.TRANSPARENT);
RECT rect = Win32Declarations.RectangleToRECT(rc);
Win32Declarations.DrawText(hdc, tabText, tabText.Length, ref rect,
DrawTextFormatFlags.DT_CENTER | DrawTextFormatFlags.DT_VCENTER | DrawTextFormatFlags.DT_NOPREFIX |
DrawTextFormatFlags.DT_END_ELLIPSIS | DrawTextFormatFlags.DT_SINGLELINE);
Win32Declarations.SetBkMode(hdc, oldBkMode);
Win32Declarations.SelectObject(hdc, oldFont);
Win32Declarations.SetTextColor(hdc, oldColor);
}
finally
{
g.ReleaseHdc(hdc);
}
}
internal void HandleWMNotify(ref Message m)
{
uint pos = Win32Declarations.GetMessagePos();
Point pt = new Point(Win32Declarations.LOWORD(pos), Win32Declarations.HIWORD(pos));
pt = _ownerControl.PointToClient(pt);
NMHDR nmhdr = (NMHDR)m.GetLParam(typeof(NMHDR));
if (nmhdr.code == Win32Declarations.TTN_NEEDTEXTW)
{
NMTTDISPINFOW dispInfo = (NMTTDISPINFOW)m.GetLParam(typeof(NMTTDISPINFOW));
_lastToolTipNode = _ownerControl.GetNodeAt(pt);
_lastToolTipColumn = _ownerControl.GetColumnAt(pt);
string tooltip = null;
if (_lastToolTipColumn != null && _lastToolTipNode != null)
{
Rectangle rc = _ownerControl.GetItemBounds(_lastToolTipNode, _lastToolTipColumn);
_lastNeedPlace = true;
tooltip = _lastToolTipColumn.GetToolTip(_lastToolTipNode, rc, ref _lastNeedPlace);
_lastItemShowRect = rc;
}
if (tooltip == null || tooltip.Length == 0)
{
dispInfo.szText = "";
dispInfo.lpszText = IntPtr.Zero;
}
else
{
dispInfo.lpszText = _toolTipPool.PinString(tooltip);
}
Marshal.StructureToPtr(dispInfo, m.LParam, false);
}
else if (nmhdr.code == Win32Declarations.TTN_SHOW && _lastNeedPlace)
{
Rectangle scItemShowRect = _ownerControl.RectangleToScreen(_lastItemShowRect);
RECT rc = Win32Declarations.RectangleToRECT(scItemShowRect);
Win32Declarations.SendMessage(Handle, (LVM)Win32Declarations.TTM_ADJUSTRECT,
1, ref rc);
Win32Declarations.SetWindowPos(Handle, IntPtr.Zero, rc.left, rc.top, 0, 0,
Win32Declarations.SWP_NOSIZE | Win32Declarations.SWP_NOZORDER | Win32Declarations.SWP_NOACTIVATE);
m.Result = (IntPtr)1;
}
}
