frame_window.cpp

来自「ncbi源码」· C++ 代码 · 共 323 行

/*
 * ===========================================================================
 * PRODUCTION $Log: frame_window.cpp,v $
 * PRODUCTION Revision 1000.0  2004/06/01 21:32:04  gouriano
 * PRODUCTION PRODUCTION: IMPORTED [GCC34_MSVC7] Dev-tree R1.4
 * PRODUCTION
 * ===========================================================================
 */

/*  $Id: frame_window.cpp,v 1000.0 2004/06/01 21:32:04 gouriano Exp $
 * ===========================================================================
 *
 *                            PUBLIC DOMAIN NOTICE
 *               National Center for Biotechnology Information
 *
 *  This software/database is a "United States Government Work" under the
 *  terms of the United States Copyright Act.  It was written as part of
 *  the author's official duties as a United States Government employee and
 *  thus cannot be copyrighted.  This software/database is freely available
 *  to the public for use. The National Library of Medicine and the U.S.
 *  Government have not placed any restriction on its use or reproduction.
 *
 *  Although all reasonable efforts have been taken to ensure the accuracy
 *  and reliability of the software and data, the NLM and the U.S.
 *  Government do not and cannot warrant the performance or results that
 *  may be obtained by using this software or data. The NLM and the U.S.
 *  Government disclaim all warranties, express or implied, including
 *  warranties of performance, merchantability or fitness for any particular
 *  purpose.
 *
 *  Please cite the author in any work or product based on this material.
 *
 * ===========================================================================
 *
 * Authors:  Andrey Yazhuk
 *
 * File Description:
 *
 */

#include <ncbi_pch.hpp>
#include <gui/widgets/workspace/frame_window.hpp>

#include <gui/utils/accel_table.hpp>

BEGIN_NCBI_SCOPE

const static double kUpdateUIPeriod = 0.5;
const static int    kUpdateTimerID = 1;

CFrameWindow::CFrameWindow(int w, int h, const char* title)
:   TParent(w, h, title),    
    m_BaseMenu(NULL),
    m_MenuBar(NULL), 
    m_MenuBarH(0),
    m_CmdHintSlot(-1),
    m_StatusBarH(24),
    m_ClientGroup(NULL),
    m_Client(NULL),
    m_CmdTarget(NULL)
{   
    m_BaseMenu = new CMenuItem("Root");

    m_MenuBar = new CMenuBar1(0 , 0, w, 0);
    m_MenuBar->SetItems(m_BaseMenu);
    m_MenuBarH = m_MenuBar->GetPreferredSize().Y();
    m_MenuBar->size(w, m_MenuBarH);
    m_MenuBar->SetCmdTarget(this);
    m_MenuBar->SetHintListener(this);
    
    m_ClientGroup = new Fl_Group(0, m_MenuBarH, w, h - m_MenuBarH - m_StatusBarH);
    m_ClientGroup->box(FL_DOWN_BOX);
    m_ClientGroup->color(FL_WHITE);

    x_SetupStatusBar();
    
    resizable(m_ClientGroup);
    end();
    
    m_UpdateUITimer.Init(kUpdateTimerID, kUpdateUIPeriod, true, this);

    m_Event.StandardConfig();
}

CFrameWindow::~CFrameWindow()
{
    hide();
    delete m_MenuBar;
}

/// override this function in derived class to create application-specific status bar
void    CFrameWindow::x_SetupStatusBar()
{
    m_StatusBar = new CStatusBar1(0, h() - m_StatusBarH, w(), m_StatusBarH);

    m_CmdHintSlot = m_StatusBar->CreateSlot(200);
    m_StatusBar->SetSlotStyles(m_CmdHintSlot, ISBSlot::fResizable);
    
    /*CStatusBar1::TSlotHandle h_slot2 = m_StatusBar->CreateSlot(150);
    m_StatusBar->SetSlotStyles(h_slot2, ISBSlot::fDownBox | ISBSlot::fCenterText);
    m_StatusBar->SetSlotText(h_slot2, "The second one");

    CStatusBar1::TSlotHandle h_slot3 = m_StatusBar->CreateSlot(40);
    m_StatusBar->SetSlotStyles(h_slot3, ISBSlot::fUpBox | ISBSlot::fCenterText);
    m_StatusBar->SetSlotText(h_slot3, "Ins");*/
}

void    CFrameWindow::ResetMenu(const CMenuItem& item)
{
    m_MenuBar->SetItems((CMenuItem*) NULL); //reset
    
    m_BaseMenu = new CMenuItem("Root");
    m_BaseMenu->Merge(item);
    m_MenuBar->SetItems(m_BaseMenu->Clone());

    x_AddClientMenu();
    m_MenuBarH = m_MenuBar->GetPreferredSize().Y();

    x_Layout();
    redraw();
}

void    CFrameWindow::ResetMenu()
{
    m_MenuBar->SetItems(m_BaseMenu->Clone());

    m_MenuBarH = m_MenuBar->GetPreferredSize().Y();

    x_AddClientMenu();

    x_Layout();
    redraw();
}

void    CFrameWindow::MergeMenu(const CMenuItem& item)
{
    CMenuItem* root = m_MenuBar->GetRootItem();
    root = root->Clone();
    root->Merge(item);
    m_MenuBar->SetItems(root);

    m_MenuBarH = m_MenuBar->GetPreferredSize().Y();

    x_Layout();
    redraw();
}

void    CFrameWindow::x_AddClientMenu()
{
    const CMenuItem* item = m_Client ? m_Client->GetMenu() : NULL;
    if(item)    {
        MergeMenu(*item);
    }
}

void    CFrameWindow::RemoveClient()
{
    if(m_Client)    {
        if(m_CmdTarget)    {
            RemoveChildCmdTarget(m_CmdTarget);
        }
        
        m_MenuBar->SetItems((CMenuItem*) NULL);
        m_MenuBarH = m_MenuBar->GetPreferredSize().Y();

        Fl_Widget* widget = dynamic_cast<Fl_Widget*>(m_Client);
        m_ClientGroup->remove(widget);
        m_ClientGroup->resizable(NULL);
        
        m_Client->SetFrameWindow(NULL);
        m_Client = NULL;
    }
    x_Layout();
}
    
void    CFrameWindow::SetClient(IFrameWindowClient* client)
{
    RemoveClient();

    Fl_Widget* widget = dynamic_cast<Fl_Widget*>(client);
    if(widget)  {
        m_Client = client;
        m_Client->SetFrameWindow(this);
        
        m_ClientGroup->add(widget);
        widget->resize(m_ClientGroup->x(), m_ClientGroup->y(), m_ClientGroup->w(),  m_ClientGroup->h());
        m_ClientGroup->resizable(widget);

        // update Menu Bar
        x_AddClientMenu();
        m_MenuBarH = m_MenuBar->GetPreferredSize().Y();
    
        m_CmdTarget = dynamic_cast<CCommandTarget*>(client);
        if(m_CmdTarget)    {
            AddChildCmdTarget(m_CmdTarget);
        }
    }
    x_Layout();
}

void    CFrameWindow::show()
{
    if(! m_UpdateUITimer.IsRunning()) {
        m_UpdateUITimer.Start();
    }
    TParent::show();
}

void    CFrameWindow::hide()
{
    m_UpdateUITimer.Stop();
    
    TParent::hide();
}

void    CFrameWindow::resize(int x, int y, int w, int h)
{
    TParent::resize(x, y, w, h);
    
    x_Layout();    
}

int     CFrameWindow::handle(int event)
{
    m_Event.OnFLTKEvent(event);

    bool handled = false;
    if(event == FL_KEYDOWN) {
        handled = x_HandleAccelerator();
    }
    if(! handled)   {
        handled = (TParent::handle(event) != 0);

        if(! handled  &&  event == FL_KEYDOWN)   {
            handled = x_HandleMenuActivate();
        }
    }
    return handled;
}

bool CFrameWindow::x_HandleAccelerator()
{
    int accel = m_Event.GetAccelByEvent();
    TCmdID cmd = eCmdInvalid;
    if(CAccelTable::GetCommandByAccel(accel, cmd))    {
        OnCommand(cmd);
        return true;
    }    
    return false;
}

bool CFrameWindow::x_HandleMenuActivate()
{
    if(m_Event.GetGUISignal() == CGUIEvent::eMenuActivateSignal) {
        if(m_MenuBar)   {
            m_MenuBar->Activate();
        }
    }
    return false;
}

Fl_Widget*      CFrameWindow::x_ClientWidget()
{
    return  dynamic_cast<Fl_Widget*>(m_Client);
}

// layouts child widgets
void    CFrameWindow::x_Layout()
{
    m_MenuBar->size(w(), m_MenuBarH);
    if(m_Client)    {
        m_ClientGroup->resize(0, m_MenuBarH, w(), h() - m_MenuBarH - m_StatusBarH);
    }
    m_StatusBar->resize(0, h() - m_StatusBarH, w(), m_StatusBarH);
}

void    CFrameWindow::OnTimeout(int timer_id)
{
    if(timer_id == kUpdateTimerID)   {
        x_OnUpdateUI();
    }
}

void     CFrameWindow::x_OnUpdateUI()
{
    if(Fl::grab() == NULL  &&  m_MenuBar)   {
        m_MenuBar->UpdateItems();
    }
}

void    CFrameWindow::OnHint(const string& hint)
{
    m_StatusBar->SetSlotText(m_CmdHintSlot, hint);
    
    if(Fl::grab())  {
        flush();  // force repainting
    }
}

END_NCBI_SCOPE


/*
 * ===========================================================================
 * $Log: frame_window.cpp,v $
 * Revision 1000.0  2004/06/01 21:32:04  gouriano
 * PRODUCTION: IMPORTED [GCC34_MSVC7] Dev-tree R1.4
 *
 * Revision 1.4  2004/05/21 22:27:56  gorelenk
 * Added PCH ncbi_pch.hpp
 *
 * Revision 1.3  2004/05/20 12:42:56  dicuccio
 * Fix compiler warning about int -> bool conversion
 *
 * Revision 1.2  2004/05/13 17:33:12  yazhuk
 * Added support for status bar, accelerators, keyboard activated menu bar
 *
 * Revision 1.1  2004/05/07 14:23:15  yazhuk
 * Initial revision
 *
 * ===========================================================================
 */