int clAuiSimpleTabArt::GetBestTabCtrlSize(wxWindow* wnd,
        const wxAuiNotebookPageArray& pages,
        const wxSize& required_bmp_size)
{
	wxClientDC dc(wnd);
	dc.SetFont(m_measuring_font);
	int x_ext = 0;

	// sometimes a standard bitmap size needs to be enforced, especially
	// if some tabs have bitmaps and others don't.  This is important because
	// it prevents the tab control from resizing when tabs are added.
	wxBitmap bmp;
	if (pages.GetCount() && pages.Item(0).bitmap.IsOk()) {
		bmp = pages.Item(0).bitmap;
	}

	wxSize s = GetTabSize(dc,
	                      wnd,
	                      wxT("ABCDEFGHIj"),
	                      bmp.IsOk() ? bmp : wxNullBitmap,
	                      true,
	                      wxAUI_BUTTON_STATE_HIDDEN,
	                      &x_ext);
	return s.y+3;
}

int wxAuiGenericTabArt::GetBestTabCtrlSize(wxWindow* wnd,
                                           const wxAuiNotebookPageArray& pages,
                                           const wxSize& requiredBmp_size)
{
    wxClientDC dc(wnd);
    dc.SetFont(m_measuringFont);

    // sometimes a standard bitmap size needs to be enforced, especially
    // if some tabs have bitmaps and others don't.  This is important because
    // it prevents the tab control from resizing when tabs are added.
    wxBitmap measureBmp;
    if (requiredBmp_size.IsFullySpecified())
    {
        measureBmp.Create(requiredBmp_size.x,
                           requiredBmp_size.y);
    }


    int max_y = 0;
    size_t i, page_count = pages.GetCount();
    for (i = 0; i < page_count; ++i)
    {
        wxAuiNotebookPage& page = pages.Item(i);

        wxBitmap bmp;
        if (measureBmp.IsOk())
            bmp = measureBmp;
        else
            bmp = page.bitmap;

        // we don't use the caption text because we don't
        // want tab heights to be different in the case
        // of a very short piece of text on one tab and a very
        // tall piece of text on another tab
        int x_ext = 0;
        wxSize s = GetTabSize(dc,
                              wnd,
                              wxT("ABCDEFGHIj"),
                              bmp,
                              true,
                              wxAUI_BUTTON_STATE_HIDDEN,
                              &x_ext);

        max_y = wxMax(max_y, s.y);
    }

    return max_y+2;
}

int gd::FlatAuiTabArt::ShowDropDown(wxWindow* wnd,
                                     const wxAuiNotebookPageArray& pages,
                                     int active_idx)
{
    wxMenu menuPopup;

    size_t i, count = pages.GetCount();
    for (i = 0; i < count; ++i)
    {
        const wxAuiNotebookPage& page = pages.Item(i);
        wxString caption = page.caption;

        // if there is no caption, make it a space.  This will prevent
        // an assert in the menu code.
        if (caption.IsEmpty())
            caption = wxT(" ");

        menuPopup.AppendCheckItem(1000+i, caption);
    }

    if (active_idx != -1)
    {
        menuPopup.Check(1000+active_idx, true);
    }

    // find out where to put the popup menu of window items
    wxPoint pt = ::wxGetMousePosition();
    pt = wnd->ScreenToClient(pt);

    // find out the screen coordinate at the bottom of the tab ctrl
    wxRect cli_rect = wnd->GetClientRect();
    pt.y = cli_rect.y + cli_rect.height;

    GDAuiCommandCapture* cc = new GDAuiCommandCapture;
    wnd->PushEventHandler(cc);
    wnd->PopupMenu(&menuPopup, pt);
    int command = cc->GetCommandId();
    wnd->PopEventHandler(true);

    if (command >= 1000)
        return command-1000;

    return -1;
}

int wxAuiSimpleTabArt::ShowDropDown(wxWindow* wnd,
                                    const wxAuiNotebookPageArray& pages,
                                    int active_idx)
{
    wxMenu menuPopup;

    size_t i, count = pages.GetCount();
    for (i = 0; i < count; ++i)
    {
        const wxAuiNotebookPage& page = pages.Item(i);
        menuPopup.AppendCheckItem(1000+i, page.caption);
    }

    if (active_idx != -1)
    {
        menuPopup.Check(1000+active_idx, true);
    }

    // find out where to put the popup menu of window
    // items.  Subtract 100 for now to center the menu
    // a bit, until a better mechanism can be implemented
    wxPoint pt = ::wxGetMousePosition();
    pt = wnd->ScreenToClient(pt);
    if (pt.x < 100)
        pt.x = 0;
    else
        pt.x -= 100;

    // find out the screen coordinate at the bottom of the tab ctrl
    wxRect cli_rect = wnd->GetClientRect();
    pt.y = cli_rect.y + cli_rect.height;

    wxAuiCommandCapture* cc = new wxAuiCommandCapture;
    wnd->PushEventHandler(cc);
    wnd->PopupMenu(&menuPopup, pt);
    int command = cc->GetCommandId();
    wnd->PopEventHandler(true);

    if (command >= 1000)
        return command-1000;

    return -1;
}