Blind fix for Compilo.

[wxWidgets.git] / src / msw / notebook.cpp

///////////////////////////////////////////////////////////////////////////////
// Name:        msw/notebook.cpp
// Purpose:     implementation of wxNotebook
// Author:      Vadim Zeitlin
// Modified by:
// Created:     11.06.98
// RCS-ID:      $Id$
// Copyright:   (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
// Licence:     wxWindows licence
///////////////////////////////////////////////////////////////////////////////

#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
#pragma implementation "notebook.h"
#endif

// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"

#ifdef __BORLANDC__
    #pragma hdrstop
#endif

#if wxUSE_NOTEBOOK

// wxWidgets
#ifndef WX_PRECOMP
  #include  "wx/string.h"
  #include  "wx/dc.h"
#endif  // WX_PRECOMP

#include  "wx/log.h"
#include  "wx/imaglist.h"
#include  "wx/event.h"
#include  "wx/control.h"
#include  "wx/notebook.h"
#include  "wx/app.h"

#include  "wx/msw/private.h"

#include  <windowsx.h>

#ifdef __GNUWIN32_OLD__
    #include "wx/msw/gnuwin32/extra.h"
#endif

#if !(defined(__GNUWIN32_OLD__) && !defined(__CYGWIN10__))
    #include <commctrl.h>
#endif

#include "wx/msw/winundef.h"

#if wxUSE_UXTHEME
    #include "wx/msw/uxtheme.h"
#endif

// ----------------------------------------------------------------------------
// macros
// ----------------------------------------------------------------------------

// check that the page index is valid
#define IS_VALID_PAGE(nPage) ((nPage) < GetPageCount())

// hide the ugly cast
#define m_hwnd    (HWND)GetHWND()

// ----------------------------------------------------------------------------
// constants
// ----------------------------------------------------------------------------

// This is a work-around for missing defines in gcc-2.95 headers
#ifndef TCS_RIGHT
    #define TCS_RIGHT       0x0002
#endif

#ifndef TCS_VERTICAL
    #define TCS_VERTICAL    0x0080
#endif

#ifndef TCS_BOTTOM
    #define TCS_BOTTOM      TCS_RIGHT
#endif

// ----------------------------------------------------------------------------
// event table
// ----------------------------------------------------------------------------

#include <wx/listimpl.cpp>

WX_DEFINE_LIST( wxNotebookPageInfoList ) ;

DEFINE_EVENT_TYPE(wxEVT_COMMAND_NOTEBOOK_PAGE_CHANGED)
DEFINE_EVENT_TYPE(wxEVT_COMMAND_NOTEBOOK_PAGE_CHANGING)

BEGIN_EVENT_TABLE(wxNotebook, wxControl)
    EVT_NOTEBOOK_PAGE_CHANGED(-1, wxNotebook::OnSelChange)

    EVT_SIZE(wxNotebook::OnSize)

    EVT_NAVIGATION_KEY(wxNotebook::OnNavigationKey)
END_EVENT_TABLE()

#if wxUSE_EXTENDED_RTTI
WX_DEFINE_FLAGS( wxNotebookStyle )

wxBEGIN_FLAGS( wxNotebookStyle )
    // new style border flags, we put them first to
    // use them for streaming out
    wxFLAGS_MEMBER(wxBORDER_SIMPLE)
    wxFLAGS_MEMBER(wxBORDER_SUNKEN)
    wxFLAGS_MEMBER(wxBORDER_DOUBLE)
    wxFLAGS_MEMBER(wxBORDER_RAISED)
    wxFLAGS_MEMBER(wxBORDER_STATIC)
    wxFLAGS_MEMBER(wxBORDER_NONE)

    // old style border flags
    wxFLAGS_MEMBER(wxSIMPLE_BORDER)
    wxFLAGS_MEMBER(wxSUNKEN_BORDER)
    wxFLAGS_MEMBER(wxDOUBLE_BORDER)
    wxFLAGS_MEMBER(wxRAISED_BORDER)
    wxFLAGS_MEMBER(wxSTATIC_BORDER)
    wxFLAGS_MEMBER(wxBORDER)

    // standard window styles
    wxFLAGS_MEMBER(wxTAB_TRAVERSAL)
    wxFLAGS_MEMBER(wxCLIP_CHILDREN)
    wxFLAGS_MEMBER(wxTRANSPARENT_WINDOW)
    wxFLAGS_MEMBER(wxWANTS_CHARS)
    wxFLAGS_MEMBER(wxFULL_REPAINT_ON_RESIZE)
    wxFLAGS_MEMBER(wxALWAYS_SHOW_SB )
    wxFLAGS_MEMBER(wxVSCROLL)
    wxFLAGS_MEMBER(wxHSCROLL)

    wxFLAGS_MEMBER(wxNB_FIXEDWIDTH)
    wxFLAGS_MEMBER(wxNB_LEFT)
    wxFLAGS_MEMBER(wxNB_RIGHT)
    wxFLAGS_MEMBER(wxNB_BOTTOM)

wxEND_FLAGS( wxNotebookStyle )

IMPLEMENT_DYNAMIC_CLASS_XTI(wxNotebook, wxControl,"wx/notebook.h")
IMPLEMENT_DYNAMIC_CLASS_XTI(wxNotebookPageInfo, wxObject , "wx/notebook.h" )

wxCOLLECTION_TYPE_INFO( wxNotebookPageInfo * , wxNotebookPageInfoList ) ;

template<> void wxCollectionToVariantArray( wxNotebookPageInfoList const &theList, wxxVariantArray &value)
{
    wxListCollectionToVariantArray<wxNotebookPageInfoList::compatibility_iterator>( theList , value ) ;
}

wxBEGIN_PROPERTIES_TABLE(wxNotebook)
    wxEVENT_PROPERTY( PageChanging , wxEVT_COMMAND_NOTEBOOK_PAGE_CHANGING , wxNotebookEvent )
    wxEVENT_PROPERTY( PageChanged , wxEVT_COMMAND_NOTEBOOK_PAGE_CHANGED , wxNotebookEvent )

    wxPROPERTY_COLLECTION( PageInfos , wxNotebookPageInfoList , wxNotebookPageInfo* , AddPageInfo , GetPageInfos , 0 /*flags*/ , wxT("Helpstring") , wxT("group"))
    wxPROPERTY_FLAGS( WindowStyle , wxNotebookStyle , long , SetWindowStyleFlag , GetWindowStyleFlag , EMPTY_MACROVALUE , 0 /*flags*/ , wxT("Helpstring") , wxT("group")) // style
wxEND_PROPERTIES_TABLE()

wxBEGIN_HANDLERS_TABLE(wxNotebook)
wxEND_HANDLERS_TABLE()

wxCONSTRUCTOR_5( wxNotebook , wxWindow* , Parent , wxWindowID , Id , wxPoint , Position , wxSize , Size , long , WindowStyle)


wxBEGIN_PROPERTIES_TABLE(wxNotebookPageInfo)
    wxREADONLY_PROPERTY( Page , wxNotebookPage* , GetPage , EMPTY_MACROVALUE , 0 /*flags*/ , wxT("Helpstring") , wxT("group"))
    wxREADONLY_PROPERTY( Text , wxString , GetText , wxString() , 0 /*flags*/ , wxT("Helpstring") , wxT("group"))
    wxREADONLY_PROPERTY( Selected , bool , GetSelected , false, 0 /*flags*/ , wxT("Helpstring") , wxT("group") )
    wxREADONLY_PROPERTY( ImageId , int , GetImageId , -1 , 0 /*flags*/ , wxT("Helpstring") , wxT("group"))
wxEND_PROPERTIES_TABLE()

wxBEGIN_HANDLERS_TABLE(wxNotebookPageInfo)
wxEND_HANDLERS_TABLE()

wxCONSTRUCTOR_4( wxNotebookPageInfo , wxNotebookPage* , Page , wxString , Text , bool , Selected , int , ImageId )

#else
IMPLEMENT_DYNAMIC_CLASS(wxNotebook, wxControl)
IMPLEMENT_DYNAMIC_CLASS(wxNotebookPageInfo, wxObject )
#endif
IMPLEMENT_DYNAMIC_CLASS(wxNotebookEvent, wxNotifyEvent)

// ============================================================================
// implementation
// ============================================================================

// ----------------------------------------------------------------------------
// wxNotebook construction
// ----------------------------------------------------------------------------

const wxNotebookPageInfoList& wxNotebook::GetPageInfos() const
{
    wxNotebookPageInfoList* list = const_cast< wxNotebookPageInfoList* >( &m_pageInfos ) ;
    WX_CLEAR_LIST( wxNotebookPageInfoList , *list ) ;
    for( size_t i = 0 ; i < GetPageCount() ; ++i )
    {
        wxNotebookPageInfo *info = new wxNotebookPageInfo() ;
        info->Create( const_cast<wxNotebook*>(this)->GetPage(i) , GetPageText(i) , GetSelection() == int(i) , GetPageImage(i) ) ;
        list->Append( info ) ;
    }
    return m_pageInfos ;
}

// common part of all ctors
void wxNotebook::Init()
{
  m_imageList = NULL;
  m_nSelection = -1;

#if wxUSE_UXTHEME
  m_hbrBackground = NULL;
#endif // wxUSE_UXTHEME
}

// default for dynamic class
wxNotebook::wxNotebook()
{
  Init();
}

// the same arguments as for wxControl
wxNotebook::wxNotebook(wxWindow *parent,
                       wxWindowID id,
                       const wxPoint& pos,
                       const wxSize& size,
                       long style,
                       const wxString& name)
{
  Init();

  Create(parent, id, pos, size, style, name);
}

// Create() function
bool wxNotebook::Create(wxWindow *parent,
                        wxWindowID id,
                        const wxPoint& pos,
                        const wxSize& size,
                        long style,
                        const wxString& name)
{
    // comctl32.dll 6.0 doesn't support non-top tabs with visual styles (the
    // control is simply not rendered correctly), so disable them in this case
    const int verComCtl32 = wxApp::GetComCtl32Version();
    if ( verComCtl32 == 600 )
    {
        // check if we use themes at all -- if we don't, we're still ok
#if wxUSE_UXTHEME
        if ( wxUxThemeEngine::GetIfActive() )
#endif
        {
            style &= ~(wxNB_BOTTOM | wxNB_LEFT | wxNB_RIGHT);
        }
    }

    LPCTSTR className = WC_TABCONTROL;

    // SysTabCtl32 class has natively CS_HREDRAW and CS_VREDRAW enabled and it
    // causes horrible flicker when resizing notebook, so get rid of it by
    // using a class without these styles (but otherwise identical to it)
    if ( !HasFlag(wxFULL_REPAINT_ON_RESIZE) )
    {
        static ClassRegistrar s_clsNotebook;
        if ( !s_clsNotebook.IsInitialized() )
        {
            // get a copy of standard class and modify it
            WNDCLASS wc;

            if ( ::GetClassInfo(::GetModuleHandle(NULL), WC_TABCONTROL, &wc) )
            {
                wc.lpszClassName = wxT("_wx_SysTabCtl32");
                wc.style &= ~(CS_HREDRAW | CS_VREDRAW);

                s_clsNotebook.Register(wc);
            }
            else
            {
                wxLogLastError(_T("GetClassInfoEx(SysTabCtl32)"));
            }
        }

        // use our custom class if available but fall back to the standard
        // notebook if we failed to register it
        if ( s_clsNotebook.IsRegistered() )
        {
            // it's ok to use c_str() here as the static s_clsNotebook object
            // has sufficiently long lifetime
            className = s_clsNotebook.GetName().c_str();
        }
    }

    if ( !CreateControl(parent, id, pos, size, style | wxTAB_TRAVERSAL,
                        wxDefaultValidator, name) )
        return false;

    if ( !MSWCreateControl(className, wxEmptyString, pos, size) )
        return false;

    return true;
}

WXDWORD wxNotebook::MSWGetStyle(long style, WXDWORD *exstyle) const
{
    WXDWORD tabStyle = wxControl::MSWGetStyle(style, exstyle);

    tabStyle |= WS_TABSTOP | TCS_TABS;

    if ( style & wxNB_MULTILINE )
        tabStyle |= TCS_MULTILINE;
    if ( style & wxNB_FIXEDWIDTH )
        tabStyle |= TCS_FIXEDWIDTH;

    if ( style & wxNB_BOTTOM )
        tabStyle |= TCS_RIGHT;
    else if ( style & wxNB_LEFT )
        tabStyle |= TCS_VERTICAL;
    else if ( style & wxNB_RIGHT )
        tabStyle |= TCS_VERTICAL | TCS_RIGHT;

    // ex style
    if ( exstyle )
    {
        // note that we never want to have the default WS_EX_CLIENTEDGE style
        // as it looks too ugly for the notebooks
        *exstyle = 0;
    }

    return tabStyle;
}

wxNotebook::~wxNotebook()
{
#if wxUSE_UXTHEME
    if ( m_hbrBackground )
        ::DeleteObject((HBRUSH)m_hbrBackground);
#endif // wxUSE_UXTHEME
}

// ----------------------------------------------------------------------------
// wxNotebook accessors
// ----------------------------------------------------------------------------

size_t wxNotebook::GetPageCount() const
{
  // consistency check
  wxASSERT( (int)m_pages.Count() == TabCtrl_GetItemCount(m_hwnd) );

  return m_pages.Count();
}

int wxNotebook::GetRowCount() const
{
  return TabCtrl_GetRowCount(m_hwnd);
}

int wxNotebook::SetSelection(size_t nPage)
{
  wxCHECK_MSG( IS_VALID_PAGE(nPage), wxNOT_FOUND, wxT("notebook page out of range") );

  if ( int(nPage) != m_nSelection )
  {
    wxNotebookEvent event(wxEVT_COMMAND_NOTEBOOK_PAGE_CHANGING, m_windowId);
    event.SetSelection(nPage);
    event.SetOldSelection(m_nSelection);
    event.SetEventObject(this);
    if ( !GetEventHandler()->ProcessEvent(event) || event.IsAllowed() )
    {
      // program allows the page change
      event.SetEventType(wxEVT_COMMAND_NOTEBOOK_PAGE_CHANGED);
      (void)GetEventHandler()->ProcessEvent(event);

      TabCtrl_SetCurSel(m_hwnd, nPage);
    }
  }

  return m_nSelection;
}

bool wxNotebook::SetPageText(size_t nPage, const wxString& strText)
{
  wxCHECK_MSG( IS_VALID_PAGE(nPage), false, wxT("notebook page out of range") );

  TC_ITEM tcItem;
  tcItem.mask = TCIF_TEXT;
  tcItem.pszText = (wxChar *)strText.c_str();

  return TabCtrl_SetItem(m_hwnd, nPage, &tcItem) != 0;
}

wxString wxNotebook::GetPageText(size_t nPage) const
{
  wxCHECK_MSG( IS_VALID_PAGE(nPage), wxEmptyString, wxT("notebook page out of range") );

  wxChar buf[256];
  TC_ITEM tcItem;
  tcItem.mask = TCIF_TEXT;
  tcItem.pszText = buf;
  tcItem.cchTextMax = WXSIZEOF(buf);

  wxString str;
  if ( TabCtrl_GetItem(m_hwnd, nPage, &tcItem) )
    str = tcItem.pszText;

  return str;
}

int wxNotebook::GetPageImage(size_t nPage) const
{
  wxCHECK_MSG( IS_VALID_PAGE(nPage), -1, wxT("notebook page out of range") );

  TC_ITEM tcItem;
  tcItem.mask = TCIF_IMAGE;

  return TabCtrl_GetItem(m_hwnd, nPage, &tcItem) ? tcItem.iImage : -1;
}

bool wxNotebook::SetPageImage(size_t nPage, int nImage)
{
  wxCHECK_MSG( IS_VALID_PAGE(nPage), false, wxT("notebook page out of range") );

  TC_ITEM tcItem;
  tcItem.mask = TCIF_IMAGE;
  tcItem.iImage = nImage;

  return TabCtrl_SetItem(m_hwnd, nPage, &tcItem) != 0;
}

void wxNotebook::SetImageList(wxImageList* imageList)
{
  wxNotebookBase::SetImageList(imageList);

  if ( imageList )
  {
    TabCtrl_SetImageList(m_hwnd, (HIMAGELIST)imageList->GetHIMAGELIST());
  }
}

// ----------------------------------------------------------------------------
// wxNotebook size settings
// ----------------------------------------------------------------------------

void wxNotebook::SetPageSize(const wxSize& size)
{
    // transform the page size into the notebook size
    RECT rc;
    rc.left =
    rc.top = 0;
    rc.right = size.x;
    rc.bottom = size.y;

    TabCtrl_AdjustRect(GetHwnd(), true, &rc);

    // and now set it
    SetSize(rc.right - rc.left, rc.bottom - rc.top);
}

void wxNotebook::SetPadding(const wxSize& padding)
{
    TabCtrl_SetPadding(GetHwnd(), padding.x, padding.y);
}

// Windows-only at present. Also, you must use the wxNB_FIXEDWIDTH
// style.
void wxNotebook::SetTabSize(const wxSize& sz)
{
    ::SendMessage(GetHwnd(), TCM_SETITEMSIZE, 0, MAKELPARAM(sz.x, sz.y));
}

wxSize wxNotebook::CalcSizeFromPage(const wxSize& sizePage) const
{
    wxSize sizeTotal = sizePage;

    // We need to make getting tab size part of the wxWidgets API.
    wxSize tabSize(0, 0);
    if (GetPageCount() > 0)
    {
        RECT rect;
        TabCtrl_GetItemRect((HWND) GetHWND(), 0, & rect);
        tabSize.x = rect.right - rect.left;
        tabSize.y = rect.bottom - rect.top;
    }
    if ( HasFlag(wxNB_LEFT) || HasFlag(wxNB_RIGHT) )
    {
        sizeTotal.x += tabSize.x + 7;
        sizeTotal.y += 7;
    }
    else
    {
        sizeTotal.x += 7;
        sizeTotal.y += tabSize.y + 7;
    }

    return sizeTotal;
}

void wxNotebook::AdjustPageSize(wxNotebookPage *page)
{
    wxCHECK_RET( page, _T("NULL page in wxNotebook::AdjustPageSize") );

    RECT rc;
    rc.left =
    rc.top = 0;

    // get the page size from the notebook size
    GetSize((int *)&rc.right, (int *)&rc.bottom);

    // This check is to work around a bug in TabCtrl_AdjustRect which will
    // cause a crash on win2k, or on XP with themes disabled, if the
    // wxNB_MULTILINE style is used and the rectangle is very small, (such as
    // when the notebook is first created.)  The value of 20 is just
    // arbitrarily chosen, if there is a better way to determine this value
    // then please do so.  --RD
    if (rc.right > 20 && rc.bottom > 20)
    {
        TabCtrl_AdjustRect(m_hwnd, false, &rc);
        page->SetSize(rc.left, rc.top, rc.right - rc.left, rc.bottom - rc.top);
    }
}

// ----------------------------------------------------------------------------
// wxNotebook operations
// ----------------------------------------------------------------------------

// remove one page from the notebook, without deleting
wxNotebookPage *wxNotebook::DoRemovePage(size_t nPage)
{
    wxNotebookPage *pageRemoved = wxNotebookBase::DoRemovePage(nPage);
    if ( !pageRemoved )
        return NULL;

    TabCtrl_DeleteItem(m_hwnd, nPage);

    if ( m_pages.IsEmpty() )
    {
        // no selection any more, the notebook becamse empty
        m_nSelection = -1;
    }
    else // notebook still not empty
    {
        int selNew = TabCtrl_GetCurSel(m_hwnd);
        if (selNew != -1)
        {
            // No selection change, just refresh the current selection.
            // Because it could be that the slection index changed
            // we need to update it.
            // Note: this does not mean the selection it self changed.
            m_nSelection = selNew;
            m_pages[m_nSelection]->Refresh();
        }
        else if (int(nPage) == m_nSelection)
        {
            // The selection was deleted.

            // Determine new selection.
            if (m_nSelection == int(GetPageCount()))
                selNew = m_nSelection - 1;
            else
                selNew = m_nSelection;

            // m_nSelection must be always valid so reset it before calling
            // SetSelection()
            m_nSelection = -1;
            SetSelection(selNew);
        }
        else
        {
            wxFAIL; // Windows did not behave ok.
        }
    }

    return pageRemoved;
}

// remove all pages
bool wxNotebook::DeleteAllPages()
{
  size_t nPageCount = GetPageCount();
  size_t nPage;
  for ( nPage = 0; nPage < nPageCount; nPage++ )
    delete m_pages[nPage];

  m_pages.Clear();

  TabCtrl_DeleteAllItems(m_hwnd);

  m_nSelection = -1;

  InvalidateBestSize();
  return true;
}

// same as AddPage() but does it at given position
bool wxNotebook::InsertPage(size_t nPage,
                            wxNotebookPage *pPage,
                            const wxString& strText,
                            bool bSelect,
                            int imageId)
{
    wxCHECK_MSG( pPage != NULL, false, _T("NULL page in wxNotebook::InsertPage") );
    wxCHECK_MSG( IS_VALID_PAGE(nPage) || nPage == GetPageCount(), false,
                 _T("invalid index in wxNotebook::InsertPage") );

    wxASSERT_MSG( pPage->GetParent() == this,
                    _T("notebook pages must have notebook as parent") );

    // add a new tab to the control
    // ----------------------------

    // init all fields to 0
    TC_ITEM tcItem;
    wxZeroMemory(tcItem);

    // set the image, if any
    if ( imageId != -1 )
    {
        tcItem.mask |= TCIF_IMAGE;
        tcItem.iImage  = imageId;
    }

    // and the text
    if ( !strText.IsEmpty() )
    {
        tcItem.mask |= TCIF_TEXT;
        tcItem.pszText = (wxChar *)strText.c_str(); // const_cast
    }

    // hide the page: unless it is selected, it shouldn't be shown (and if it
    // is selected it will be shown later)
    HWND hwnd = GetWinHwnd(pPage);
    SetWindowLong(hwnd, GWL_STYLE, GetWindowLong(hwnd, GWL_STYLE) & ~WS_VISIBLE);

    // this updates internal flag too -- otherwise it would get out of sync
    // with the real state
    pPage->Show(false);


    // fit the notebook page to the tab control's display area: this should be
    // done before adding it to the notebook or TabCtrl_InsertItem() will
    // change the notebooks size itself!
    AdjustPageSize(pPage);

    // finally do insert it
    if ( TabCtrl_InsertItem(m_hwnd, nPage, &tcItem) == -1 )
    {
        wxLogError(wxT("Can't create the notebook page '%s'."), strText.c_str());

        return false;
    }

    // succeeded: save the pointer to the page
    m_pages.Insert(pPage, nPage);

    // we may need to adjust the size again if the notebook size changed:
    // normally this only happens for the first page we add (the tabs which
    // hadn't been there before are now shown) but for a multiline notebook it
    // can happen for any page at all as a new row could have been started
    if ( m_pages.GetCount() == 1 || HasFlag(wxNB_MULTILINE) )
    {
        AdjustPageSize(pPage);
    }

    // now deal with the selection
    // ---------------------------

    // if the inserted page is before the selected one, we must update the
    // index of the selected page
    if ( int(nPage) <= m_nSelection )
    {
        // one extra page added
        m_nSelection++;
    }

    // some page should be selected: either this one or the first one if there
    // is still no selection
    int selNew = -1;
    if ( bSelect )
        selNew = nPage;
    else if ( m_nSelection == -1 )
        selNew = 0;

    if ( selNew != -1 )
        SetSelection(selNew);

    InvalidateBestSize();
    return true;
}

int wxNotebook::HitTest(const wxPoint& pt, long *flags) const
{
    TC_HITTESTINFO hitTestInfo;
    hitTestInfo.pt.x = pt.x;
    hitTestInfo.pt.y = pt.y;
    int item = TabCtrl_HitTest(GetHwnd(), &hitTestInfo);

    if ( flags )
    {
        *flags = 0;

        if ((hitTestInfo.flags & TCHT_NOWHERE) == TCHT_NOWHERE)
            *flags |= wxNB_HITTEST_NOWHERE;
        if ((hitTestInfo.flags & TCHT_ONITEM) == TCHT_ONITEM)
            *flags |= wxNB_HITTEST_ONITEM;
        if ((hitTestInfo.flags & TCHT_ONITEMICON) == TCHT_ONITEMICON)
            *flags |= wxNB_HITTEST_ONICON;
        if ((hitTestInfo.flags & TCHT_ONITEMLABEL) == TCHT_ONITEMLABEL)
            *flags |= wxNB_HITTEST_ONLABEL;
    }

    return item;
}


// ----------------------------------------------------------------------------
// wxNotebook callbacks
// ----------------------------------------------------------------------------

void wxNotebook::OnSize(wxSizeEvent& event)
{
    // update the background brush
#if wxUSE_UXTHEME
    UpdateBgBrush();
#endif // wxUSE_UXTHEME

    // fit all the notebook pages to the tab control's display area

    RECT rc;
    rc.left = rc.top = 0;
    GetSize((int *)&rc.right, (int *)&rc.bottom);

    // save the total size, we'll use it below
    int widthNbook = rc.right - rc.left,
        heightNbook = rc.bottom - rc.top;

    // there seems to be a bug in the implementation of TabCtrl_AdjustRect(): it
    // returns completely false values for multiline tab controls after the tabs
    // are added but before getting the first WM_SIZE (off by ~50 pixels, see
    //
    // http://sf.net/tracker/index.php?func=detail&aid=645323&group_id=9863&atid=109863
    //
    // and the only work around I could find was this ugly hack... without it
    // simply toggling the "multiline" checkbox in the notebook sample resulted
    // in a noticeable page displacement
    if ( HasFlag(wxNB_MULTILINE) )
    {
        // avoid an infinite recursion: we get another notification too!
        static bool s_isInOnSize = false;

        if ( !s_isInOnSize )
        {
            s_isInOnSize = true;
            SendMessage(GetHwnd(), WM_SIZE, SIZE_RESTORED,
                    MAKELPARAM(rc.right, rc.bottom));
            s_isInOnSize = false;
        }
    }

    TabCtrl_AdjustRect(m_hwnd, false, &rc);

    int width = rc.right - rc.left,
        height = rc.bottom - rc.top;
    size_t nCount = m_pages.Count();
    for ( size_t nPage = 0; nPage < nCount; nPage++ ) {
        wxNotebookPage *pPage = m_pages[nPage];
        pPage->SetSize(rc.left, rc.top, width, height);
    }


    // unless we had already repainted everything, we now need to refresh
    if ( !HasFlag(wxFULL_REPAINT_ON_RESIZE) )
    {
        // invalidate areas not covered by pages
        RefreshRect(wxRect(0, 0, widthNbook, rc.top), false);
        RefreshRect(wxRect(0, rc.top, rc.left, height), false);
        RefreshRect(wxRect(0, rc.bottom, widthNbook, heightNbook - rc.bottom),
                    false);
        RefreshRect(wxRect(rc.right, rc.top, widthNbook - rc.bottom, height),
                    false);
    }

    event.Skip();
}

void wxNotebook::OnSelChange(wxNotebookEvent& event)
{
  // is it our tab control?
  if ( event.GetEventObject() == this )
  {
      int sel = event.GetOldSelection();
      if ( sel != -1 )
        m_pages[sel]->Show(false);

      sel = event.GetSelection();
      if ( sel != -1 )
      {
        wxNotebookPage *pPage = m_pages[sel];
        pPage->Show(true);
        pPage->SetFocus();

        // If the newly focused window is not a child of the new page,
        // SetFocus was not successful and the notebook itself should be
        // focused
        wxWindow *currentFocus = FindFocus();
        wxWindow *startFocus = currentFocus;
        while ( currentFocus && currentFocus != pPage && currentFocus != this )
            currentFocus = currentFocus->GetParent();

        if ( startFocus == pPage || currentFocus != pPage )
            SetFocus();

      }
      else // no pages in the notebook, give the focus to itself
      {
          SetFocus();
      }

      m_nSelection = sel;
  }

  // we want to give others a chance to process this message as well
  event.Skip();
}

bool wxNotebook::MSWTranslateMessage(WXMSG *wxmsg)
{
    const MSG * const msg = (MSG *)wxmsg;

    // intercept TAB, CTRL+TAB and CTRL+SHIFT+TAB for processing by wxNotebook.
    // TAB will be passed to the currently selected page, CTRL+TAB and
    // CTRL+SHIFT+TAB will be processed by the notebook itself. do not
    // intercept SHIFT+TAB. This goes to the parent of the notebook which will
    // process it.
    if ( msg->message == WM_KEYDOWN && msg->wParam == VK_TAB &&
            msg->hwnd == m_hwnd &&
                (wxIsCtrlDown() || !wxIsShiftDown()) )
    {
        return MSWProcessMessage(wxmsg);
    }

    return false;
}

void wxNotebook::OnNavigationKey(wxNavigationKeyEvent& event)
{
    if ( event.IsWindowChange() ) {
        // change pages
        AdvanceSelection(event.GetDirection());
    }
    else {
        // we get this event in 3 cases
        //
        // a) one of our pages might have generated it because the user TABbed
        // out from it in which case we should propagate the event upwards and
        // our parent will take care of setting the focus to prev/next sibling
        //
        // or
        //
        // b) the parent panel wants to give the focus to us so that we
        // forward it to our selected page. We can't deal with this in
        // OnSetFocus() because we don't know which direction the focus came
        // from in this case and so can't choose between setting the focus to
        // first or last panel child
        //
        // or
        //
        // c) we ourselves (see MSWTranslateMessage) generated the event
        //
        wxWindow * const parent = GetParent();

        const bool isFromParent = event.GetEventObject() == parent;
        const bool isFromSelf = event.GetEventObject() == this;

        if ( isFromParent || isFromSelf )
        {
            // no, it doesn't come from child, case (b) or (c): forward to a
            // page but only if direction is backwards (TAB) or from ourselves,
            if ( m_nSelection != -1 &&
                    (!event.GetDirection() || isFromSelf) )
            {
                // so that the page knows that the event comes from it's parent
                // and is being propagated downwards
                event.SetEventObject(this);

                wxWindow *page = m_pages[m_nSelection];
                if ( !page->GetEventHandler()->ProcessEvent(event) )
                {
                    page->SetFocus();
                }
                //else: page manages focus inside it itself
            }
            else // otherwise set the focus to the notebook itself
            {
                SetFocus();
            }
        }
        else
        {
            // it comes from our child, case (a), pass to the parent, but only
            // if the direction is forwards. Otherwise set the focus to the
            // notebook itself. The notebook is always the 'first' control of a
            // page.
            if ( !event.GetDirection() )
            {
                SetFocus();
            }
            else if ( parent )
            {
                event.SetCurrentFocus(this);
                parent->GetEventHandler()->ProcessEvent(event);
            }
        }
    }
}

#if wxUSE_UXTHEME

WXHANDLE wxNotebook::QueryBgBitmap(wxWindow *win)
{
    RECT rc;
    GetWindowRect(GetHwnd(), &rc);

    WindowHDC hDC(GetHwnd());
    MemoryHDC hDCMem(hDC);
    CompatibleBitmap hBmp(hDC, rc.right - rc.left, rc.bottom - rc.top);

    SelectInHDC selectBmp(hDCMem, hBmp);

    ::SendMessage(GetHwnd(), WM_PRINTCLIENT,
                  (WPARAM)(HDC)hDCMem,
                  PRF_ERASEBKGND | PRF_CLIENT | PRF_NONCLIENT);

    if ( win )
    {
        RECT rc2;
        ::GetWindowRect(GetHwndOf(win), &rc2);

        COLORREF c = ::GetPixel(hDCMem, rc2.left - rc.left, rc2.top - rc.top);

        return (WXHANDLE)c;
    }
    //else: we are asked to create the brush

    return (WXHANDLE)::CreatePatternBrush(hBmp);
}

void wxNotebook::UpdateBgBrush()
{
    if ( m_hbrBackground )
        ::DeleteObject((HBRUSH)m_hbrBackground);

    if ( !m_hasBgCol && wxUxThemeEngine::GetIfActive() )
    {
        m_hbrBackground = (WXHBRUSH)QueryBgBitmap();
    }
    else // no themes
    {
        m_hbrBackground = NULL;
    }
}

WXHBRUSH wxNotebook::MSWGetBgBrushForChild(WXHDC hDC, wxWindow *win)
{
    if ( m_hbrBackground )
    {
        // before drawing with the background brush, we need to position it
        // correctly
        RECT rc;
        ::GetWindowRect(GetHwndOf(win), &rc);

        ::MapWindowPoints(NULL, GetHwnd(), (POINT *)&rc, 1);

        if ( !::SetBrushOrgEx((HDC)hDC, -rc.left, -rc.top, NULL) )
        {
            wxLogLastError(_T("SetBrushOrgEx(notebook bg brush)"));
        }

        return m_hbrBackground;
    }

    return wxNotebookBase::MSWGetBgBrushForChild(hDC, win);
}

wxColour wxNotebook::MSWGetBgColourForChild(wxWindow *win)
{
    if ( m_hasBgCol )
        return GetBackgroundColour();

    if ( !wxUxThemeEngine::GetIfActive() )
        return wxNullColour;

    COLORREF c = (COLORREF)QueryBgBitmap(win);

    return c == CLR_INVALID ? wxNullColour : wxRGBToColour(c);
}

#endif // wxUSE_UXTHEME

// ----------------------------------------------------------------------------
// wxNotebook base class virtuals
// ----------------------------------------------------------------------------

#if wxUSE_CONSTRAINTS

// override these 2 functions to do nothing: everything is done in OnSize

void wxNotebook::SetConstraintSizes(bool WXUNUSED(recurse))
{
  // don't set the sizes of the pages - their correct size is not yet known
  wxControl::SetConstraintSizes(false);
}

bool wxNotebook::DoPhase(int WXUNUSED(nPhase))
{
  return true;
}

#endif // wxUSE_CONSTRAINTS

// ----------------------------------------------------------------------------
// wxNotebook Windows message handlers
// ----------------------------------------------------------------------------

bool wxNotebook::MSWOnScroll(int orientation, WXWORD nSBCode,
                             WXWORD pos, WXHWND control)
{
    // don't generate EVT_SCROLLWIN events for the WM_SCROLLs coming from the
    // up-down control
    if ( control )
        return false;

    return wxNotebookBase::MSWOnScroll(orientation, nSBCode, pos, control);
}

bool wxNotebook::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM* result)
{
  wxNotebookEvent event(wxEVT_NULL, m_windowId);

  NMHDR* hdr = (NMHDR *)lParam;
  switch ( hdr->code ) {
    case TCN_SELCHANGE:
      event.SetEventType(wxEVT_COMMAND_NOTEBOOK_PAGE_CHANGED);
      break;

    case TCN_SELCHANGING:
      event.SetEventType(wxEVT_COMMAND_NOTEBOOK_PAGE_CHANGING);
      break;

    default:
      return wxControl::MSWOnNotify(idCtrl, lParam, result);
  }

  event.SetSelection(TabCtrl_GetCurSel(m_hwnd));
  event.SetOldSelection(m_nSelection);
  event.SetEventObject(this);
  event.SetInt(idCtrl);

  bool processed = GetEventHandler()->ProcessEvent(event);
  *result = !event.IsAllowed();
  return processed;
}

#endif // wxUSE_NOTEBOOK