mdi.cpp

A*算法 A*算法 A*算法 A*算法A*算法A*算法

            }
            break;

        case WM_SIZE:
            // though we don't (usually) resize the MDI client to exactly fit the
            // client area we need to pass this one to DefFrameProc to allow the children to show
            break;
    }

    if ( !processed )
        rc = wxFrame::MSWWindowProc(message, wParam, lParam);

    return rc;
}

bool wxMDIParentFrame::HandleActivate(int state, bool minimized, WXHWND activate)
{
    bool processed = false;

    if ( wxWindow::HandleActivate(state, minimized, activate) )
    {
        // already processed
        processed = true;
    }

    // If this window is an MDI parent, we must also send an OnActivate message
    // to the current child.
    if ( (m_currentChild != NULL) &&
         ((state == WA_ACTIVE) || (state == WA_CLICKACTIVE)) )
    {
        wxActivateEvent event(wxEVT_ACTIVATE, true, m_currentChild->GetId());
        event.SetEventObject( m_currentChild );
        if ( m_currentChild->GetEventHandler()->ProcessEvent(event) )
            processed = true;
    }

    return processed;
}

bool wxMDIParentFrame::HandleCommand(WXWORD id, WXWORD cmd, WXHWND hwnd)
{
    // In case it's e.g. a toolbar.
    if ( hwnd )
    {
        wxWindow *win = wxFindWinFromHandle(hwnd);
        if ( win )
            return win->MSWCommand(cmd, id);
    }

    if (wxCurrentPopupMenu)
    {
        wxMenu *popupMenu = wxCurrentPopupMenu;
        wxCurrentPopupMenu = NULL;
        if (popupMenu->MSWCommand(cmd, id))
            return true;
    }

    // is it one of standard MDI commands?
    WXWPARAM wParam = 0;
    WXLPARAM lParam = 0;
    int msg;
    switch ( id )
    {
        case IDM_WINDOWCASCADE:
            msg = WM_MDICASCADE;
            wParam = MDITILE_SKIPDISABLED;
            break;

        case IDM_WINDOWTILEHOR:
            wParam |= MDITILE_HORIZONTAL;
            // fall through

        case IDM_WINDOWTILEVERT:
            if ( !wParam )
                wParam = MDITILE_VERTICAL;
            msg = WM_MDITILE;
            wParam |= MDITILE_SKIPDISABLED;
            break;

        case IDM_WINDOWICONS:
            msg = WM_MDIICONARRANGE;
            break;

        case IDM_WINDOWNEXT:
            msg = WM_MDINEXT;
            lParam = 0;         // next child
            break;

        case IDM_WINDOWPREV:
            msg = WM_MDINEXT;
            lParam = 1;         // previous child
            break;

        default:
            msg = 0;
    }

    if ( msg )
    {
        ::SendMessage(GetWinHwnd(GetClientWindow()), msg, wParam, lParam);

        return true;
    }

    // FIXME VZ: what does this test do??
    if (id >= 0xF000)
    {
        return false; // Get WndProc to call default proc
    }

    if ( IsMdiCommandId(id) )
    {
        wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
        while ( node )
        {
            wxWindow *child = node->GetData();
            if ( child->GetHWND() )
            {
                long childId = wxGetWindowId(child->GetHWND());
                if (childId == (long)id)
                {
                    ::SendMessage( GetWinHwnd(GetClientWindow()),
                                   WM_MDIACTIVATE,
                                   (WPARAM)child->GetHWND(), 0);
                    return true;
                }
            }
            node = node->GetNext();
        }
    }
    else if ( m_parentFrameActive )
    {
        return ProcessCommand(id);
    }
    else if ( m_currentChild )
    {
        return m_currentChild->HandleCommand(id, cmd, hwnd);
    }
    else
    {
        // this shouldn't happen because it means that our messages are being
        // lost (they're not sent to the parent frame nor to the children)
        wxFAIL_MSG(wxT("MDI parent frame is not active, yet there is no active MDI child?"));
    }

    return false;
}

WXLRESULT wxMDIParentFrame::MSWDefWindowProc(WXUINT message,
                                        WXWPARAM wParam,
                                        WXLPARAM lParam)
{
    WXHWND clientWnd;
    if ( GetClientWindow() )
        clientWnd = GetClientWindow()->GetHWND();
    else
        clientWnd = 0;

    return DefFrameProc(GetHwnd(), (HWND)clientWnd, message, wParam, lParam);
}

bool wxMDIParentFrame::MSWTranslateMessage(WXMSG* msg)
{
    MSG *pMsg = (MSG *)msg;

    // first let the current child get it
    if ( m_currentChild && m_currentChild->GetHWND() &&
         m_currentChild->MSWTranslateMessage(msg) )
    {
        return true;
    }

    // then try out accel table (will also check the menu accels)
    if ( wxFrame::MSWTranslateMessage(msg) )
    {
        return true;
    }

    // finally, check for MDI specific built in accel keys
    if ( pMsg->message == WM_KEYDOWN || pMsg->message == WM_SYSKEYDOWN )
    {
        if ( ::TranslateMDISysAccel(GetWinHwnd(GetClientWindow()), pMsg))
            return true;
    }

    return false;
}

// ===========================================================================
// wxMDIChildFrame
// ===========================================================================

void wxMDIChildFrame::Init()
{
    m_needsResize = true;
    m_needsInitialShow = true;
}

bool wxMDIChildFrame::Create(wxMDIParentFrame *parent,
                             wxWindowID id,
                             const wxString& title,
                             const wxPoint& pos,
                             const wxSize& size,
                             long style,
                             const wxString& name)
{
  SetName(name);

  if ( id != wxID_ANY )
    m_windowId = id;
  else
    m_windowId = (int)NewControlId();

  if ( parent )
  {
      parent->AddChild(this);
  }

  int x = pos.x;
  int y = pos.y;
  int width = size.x;
  int height = size.y;

  MDICREATESTRUCT mcs;

  mcs.szClass = style & wxFULL_REPAINT_ON_RESIZE
                    ? wxMDIChildFrameClassName
                    : wxMDIChildFrameClassNameNoRedraw;
  mcs.szTitle = title;
  mcs.hOwner = wxGetInstance();
  if (x != wxDefaultCoord)
      mcs.x = x;
  else
      mcs.x = CW_USEDEFAULT;

  if (y != wxDefaultCoord)
      mcs.y = y;
  else
      mcs.y = CW_USEDEFAULT;

  if (width != wxDefaultCoord)
      mcs.cx = width;
  else
      mcs.cx = CW_USEDEFAULT;

  if (height != wxDefaultCoord)
      mcs.cy = height;
  else
      mcs.cy = CW_USEDEFAULT;

  DWORD msflags = WS_OVERLAPPED | WS_CLIPCHILDREN;
  if (style & wxMINIMIZE_BOX)
    msflags |= WS_MINIMIZEBOX;
  if (style & wxMAXIMIZE_BOX)
    msflags |= WS_MAXIMIZEBOX;
  if (style & wxTHICK_FRAME)
    msflags |= WS_THICKFRAME;
  if (style & wxSYSTEM_MENU)
    msflags |= WS_SYSMENU;
  if ((style & wxMINIMIZE) || (style & wxICONIZE))
    msflags |= WS_MINIMIZE;
  if (style & wxMAXIMIZE)
    msflags |= WS_MAXIMIZE;
  if (style & wxCAPTION)
    msflags |= WS_CAPTION;

  mcs.style = msflags;

  mcs.lParam = 0;

  wxWindowCreationHook hook(this);

  m_hWnd = (WXHWND)::SendMessage(GetWinHwnd(parent->GetClientWindow()),
                                 WM_MDICREATE, 0, (LONG)(LPSTR)&mcs);

  wxAssociateWinWithHandle((HWND) GetHWND(), this);

  return true;
}

wxMDIChildFrame::~wxMDIChildFrame()
{
    // will be destroyed by DestroyChildren() but reset them before calling it
    // to avoid using dangling pointers if a callback comes in the meanwhile
#if wxUSE_TOOLBAR
    m_frameToolBar = NULL;
#endif
#if wxUSE_STATUSBAR
    m_frameStatusBar = NULL;
#endif // wxUSE_STATUSBAR

    DestroyChildren();

    RemoveWindowMenu(NULL, m_hMenu);

    MSWDestroyWindow();
}

bool wxMDIChildFrame::Show(bool show)
{
    m_needsInitialShow = false;
    return wxFrame::Show(show);
}

// Set the client size (i.e. leave the calculation of borders etc.
// to wxWidgets)
void wxMDIChildFrame::DoSetClientSize(int width, int height)
{
  HWND hWnd = GetHwnd();

  RECT rect;
  ::GetClientRect(hWnd, &rect);

  RECT rect2;
  GetWindowRect(hWnd, &rect2);

  // Find the difference between the entire window (title bar and all)
  // and the client area; add this to the new client size to move the
  // window
  int actual_width = rect2.right - rect2.left - rect.right + width;
  int actual_height = rect2.bottom - rect2.top - rect.bottom + height;

#if wxUSE_STATUSBAR
  if (GetStatusBar() && GetStatusBar()->IsShown())
  {
    int sx, sy;
    GetStatusBar()->GetSize(&sx, &sy);
    actual_height += sy;
  }
#endif // wxUSE_STATUSBAR

  POINT point;
  point.x = rect2.left;
  point.y = rect2.top;

  // If there's an MDI parent, must subtract the parent's top left corner
  // since MoveWindow moves relative to the parent
  wxMDIParentFrame *mdiParent = (wxMDIParentFrame *)GetParent();
  ::ScreenToClient((HWND) mdiParent->GetClientWindow()->GetHWND(), &point);

  MoveWindow(hWnd, point.x, point.y, actual_width, actual_height, (BOOL)true);

  wxSize size(width, height);
  wxSizeEvent event(size, m_windowId);
  event.SetEventObject( this );
  GetEventHandler()->ProcessEvent(event);
}

void wxMDIChildFrame::DoGetPosition(int *x, int *y) const
{
  RECT rect;
  GetWindowRect(GetHwnd(), &rect);
  POINT point;
  point.x = rect.left;
  point.y = rect.top;

  // Since we now have the absolute screen coords,
  // if there's a parent we must subtract its top left corner
  wxMDIParentFrame *mdiParent = (wxMDIParentFrame *)GetParent();
  ::ScreenToClient((HWND) mdiParent->GetClientWindow()->GetHWND(), &point);

  if (x)
      *x = point.x;
  if (y)
      *y = point.y;
}

void wxMDIChildFrame::InternalSetMenuBar()
{
    wxMDIParentFrame *parent = (wxMDIParentFrame *)GetParent();

    InsertWindowMenu(parent->GetClientWindow(),
                     m_hMenu, GetMDIWindowMenu(parent));

    parent->m_parentFrameActive = false;
}

void wxMDIChildFrame::DetachMenuBar()
{
    RemoveWindowMenu(NULL, m_hMenu);
    wxFrame::DetachMenuBar();
}

WXHICON wxMDIChildFrame::GetDefaultIcon() const
{
    // we don't have any standard icons (any more)
    return (WXHICON)0;
}

// ---------------------------------------------------------------------------
// MDI operations
// ---------------------------------------------------------------------------

void wxMDIChildFrame::Maximize(bool maximize)
{
    wxMDIParentFrame *parent = (wxMDIParentFrame *)GetParent();
    if ( parent && parent->GetClientWindow() )
    {
        ::SendMessage(GetWinHwnd(parent->GetClientWindow()),
                      maximize ? WM_MDIMAXIMIZE : WM_MDIRESTORE,
                      (WPARAM)GetHwnd(), 0);
    }
}

void wxMDIChildFrame::Restore()
{
    wxMDIParentFrame *parent = (wxMDIParentFrame *)GetParent();
    if ( parent && parent->GetClientWindow() )
    {
        ::SendMessage(GetWinHwnd(parent->GetClientWindow()), WM_MDIRESTORE,
                      (WPARAM) GetHwnd(), 0);
    }
}

void wxMDIChildFrame::Activate()
{
    wxMDIParentFrame *parent = (wxMDIParentFrame *)GetParent();
    if ( parent && parent->GetClientWindow() )
    {
        ::SendMessage(GetWinHwnd(parent->GetClientWindow()), WM_MDIACTIVATE,
                      (WPARAM) GetHwnd(), 0);
    }
}

// ---------------------------------------------------------------------------
// MDI window proc and message handlers
// ---------------------------------------------------------------------------

WXLRESULT wxMDIChildFrame::MSWWindowProc(WXUINT message,
                                    WXWPARAM wParam,
                                    WXLPARAM lParam)
{
    WXLRESULT rc = 0;
    bool processed = false;

    switch ( message )
    {
        case WM_COMMAND:
            {
                WORD id, cmd;
                WXHWND hwnd;
                UnpackCommand((WXWPARAM)wParam, (WXLPARAM)lParam,
                              &id, &hwnd, &cmd);

                processed = HandleCommand(id, cmd, (WXHWND)hwnd);
            }
            break;

        case WM_GETMINMAXINFO:
            processed = HandleGetMinMaxInfo((MINMAXINFO *)lParam);
            break;

        case WM_MDIACTIVATE:
            {
                WXWORD act;
                WXHWND hwndAct, hwndDeact;
                UnpackMDIActivate(wParam, lParam, &act, &hwndAct, &hwndDeact);

                processed = HandleMDIActivate(act, hwndAct, hwndDeact);
            }
            // fall through

        case WM_MOVE:
            // must pass WM_MOVE to DefMDIChildProc() to recalculate MDI client
            // scrollbars if necessary

            // fall through

        case WM_SIZE:
            // must pass WM_SIZE to DefMDIChildProc(), otherwise many weird
            // things happen
            MSWDefWindowProc(message, wParam, lParam);
            break;

        case WM_SYSCOMMAND:
            // DefMDIChildProc handles SC_{NEXT/PREV}WINDOW here, so pass it
            // the message (the base class version does not)
            return MSWDefWindowProc(message, wParam, lParam);

        case WM_WINDOWPOSCHANGING:
            processed = HandleWindowPosChanging((LPWINDOWPOS)lParam);
            break;
    }

    if ( !processed )
        rc = wxFrame::MSWWindowProc(message, wParam, lParam);

    return rc;
}

bool wxMDIChildFrame::HandleCommand(WXWORD id, WXWORD cmd, WXHWND hwnd)
{
    // In case it's e.g. a toolbar.
    if ( hwnd )
    {
        wxWindow *win = wxFindWinFromHandle(hwnd);
        if (win)
            return win->MSWCommand(cmd, id);
    }

    if (wxCurrentPopupMenu)
    {