emulator.cpp

很牛的GUI源码wxWidgets-2.8.0.zip 可在多种平台下运行.

/////////////////////////////////////////////////////////////////////////////
// Name:        emulator.cpp
// Purpose:     Emulator wxWidgets sample
// Author:      Julian Smart
// Modified by:
// Created:     04/01/98
// RCS-ID:      $Id: emulator.cpp,v 1.16 2005/09/23 12:56:27 MR Exp $
// Copyright:   (c) Julian Smart
// Licence:     wxWindows licence
/////////////////////////////////////////////////////////////////////////////

// ============================================================================
// declarations
// ============================================================================

// ----------------------------------------------------------------------------
// headers
// ----------------------------------------------------------------------------

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

#ifdef __BORLANDC__
    #pragma hdrstop
#endif

// for all others, include the necessary headers (this file is usually all you
// need because it includes almost all "standard" wxWidgets headers)
#ifndef WX_PRECOMP
    #include "wx/wx.h"
#endif

#include "wx/confbase.h"
#include "wx/fileconf.h"
#include "wx/cmdline.h"
#include "wx/image.h"
#include "wx/file.h"

#ifdef __WXX11__
#include "wx/x11/reparent.h"
#endif

#include "emulator.h"

// ----------------------------------------------------------------------------
// resources
// ----------------------------------------------------------------------------

// the application icon (under Windows and OS/2 it is in resources)
#if defined(__WXGTK__) || defined(__WXMOTIF__) || defined(__WXMAC__) || defined(__WXMGL__) || defined(__WXX11__)
    #include "emulator.xpm"
#endif

// ----------------------------------------------------------------------------
// event tables and other macros for wxWidgets
// ----------------------------------------------------------------------------

// the event tables connect the wxWidgets events with the functions (event
// handlers) which process them. It can be also done at run-time, but for the
// simple menu events like this the static method is much simpler.
BEGIN_EVENT_TABLE(wxEmulatorFrame, wxFrame)
    EVT_MENU(Emulator_Quit,  wxEmulatorFrame::OnQuit)
    EVT_MENU(Emulator_About, wxEmulatorFrame::OnAbout)
    EVT_CLOSE(wxEmulatorFrame::OnCloseWindow)
END_EVENT_TABLE()

// Create a new application object: this macro will allow wxWidgets to create
// the application object during program execution (it's better than using a
// static object for many reasons) and also declares the accessor function
// wxGetApp() which will return the reference of the right type (i.e. wxEmulatorApp and
// not wxApp)
IMPLEMENT_APP(wxEmulatorApp)

static const wxCmdLineEntryDesc sg_cmdLineDesc[] =
{
    { wxCMD_LINE_OPTION, _T("u"), _T("use-display"),   _T("display number to use (default 100)"), (wxCmdLineParamType)0, 0 },

    { wxCMD_LINE_SWITCH, _T("h"), _T("help"),   _T("displays help on the command line parameters"), (wxCmdLineParamType)0, 0 },
    { wxCMD_LINE_SWITCH, _T("v"), _T("version"),    _T("print version"), (wxCmdLineParamType)0, 0 },

    { wxCMD_LINE_PARAM,  NULL, NULL, _T("config file 1"), wxCMD_LINE_VAL_STRING, wxCMD_LINE_PARAM_OPTIONAL },

    { wxCMD_LINE_NONE, NULL, NULL, NULL, (wxCmdLineParamType)0, 0 }
};


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

// ----------------------------------------------------------------------------
// the application class
// ----------------------------------------------------------------------------

wxEmulatorApp::wxEmulatorApp()
{
    m_xnestWindow = NULL;
    m_containerWindow = NULL;
    m_displayNumber = wxT("100");
    m_xnestPID = 0;

}

// 'Main program' equivalent: the program execution "starts" here
bool wxEmulatorApp::OnInit()
{
#if wxUSE_LOG
    wxLog::SetTimestamp(NULL);
#endif // wxUSE_LOG
    wxInitAllImageHandlers();

    wxString currentDir = wxGetCwd();

    // Use argv to get current app directory
    m_appDir = wxFindAppPath(argv[0], currentDir, wxT("WXEMUDIR"));

    // If the development version, go up a directory.
#ifdef __WXMSW__
    if ((m_appDir.Right(5).CmpNoCase(_T("DEBUG")) == 0) ||
        (m_appDir.Right(11).CmpNoCase(_T("DEBUGSTABLE")) == 0) ||
        (m_appDir.Right(7).CmpNoCase(_T("RELEASE")) == 0) ||
        (m_appDir.Right(13).CmpNoCase(_T("RELEASESTABLE")) == 0)
        )
        m_appDir = wxPathOnly(m_appDir);
#endif

    // Parse the command-line parameters and options
    wxCmdLineParser parser(sg_cmdLineDesc, argc, argv);
    int res;
    {
        wxLogNull log;
        res = parser.Parse();
    }
    if (res == -1 || res > 0 || parser.Found(wxT("h")))
    {
#ifdef __X__
        wxLog::SetActiveTarget(new wxLogStderr);
#endif
        parser.Usage();
        return false;
    }
    if (parser.Found(wxT("v")))
    {
#ifdef __X__
        wxLog::SetActiveTarget(new wxLogStderr);
#endif
        wxString msg;
        msg.Printf(wxT("wxWidgets PDA Emulator (c) Julian Smart, 2002 Version %.2f, %s"), wxEMULATOR_VERSION, __DATE__);
        wxLogMessage(msg);
        return false;
    }
    if (parser.Found(wxT("u"), & m_displayNumber))
    {
        // Should only be number, so strip out anything before
        // and including a : character
        if (m_displayNumber.Find(wxT(':')) != -1)
        {
            m_displayNumber = m_displayNumber.AfterFirst(wxT(':'));
        }
    }
    if (parser.GetParamCount() == 0)
    {
        m_emulatorInfo.m_emulatorFilename = wxT("default.wxe");
    }
    else if (parser.GetParamCount() > 0)
    {
        m_emulatorInfo.m_emulatorFilename = parser.GetParam(0);
    }

    // Load the emulation info
    if (!LoadEmulator(m_appDir))
    {
        //wxMessageBox(wxT("Sorry, could not load this emulator. Please check bitmaps are valid."));
        return false;
    }

    // create the main application window
    wxEmulatorFrame *frame = new wxEmulatorFrame(_T("wxEmulator"),
                                 wxPoint(50, 50), wxSize(450, 340));

#if wxUSE_STATUSBAR
    frame->SetStatusText(m_emulatorInfo.m_emulatorTitle, 0);

    wxString sizeStr;
    sizeStr.Printf(wxT("Screen: %dx%d"), (int) m_emulatorInfo.m_emulatorScreenSize.x,
            (int) m_emulatorInfo.m_emulatorScreenSize.y);
    frame->SetStatusText(sizeStr, 1);
#endif // wxUSE_STATUSBAR

    m_containerWindow = new wxEmulatorContainer(frame, wxID_ANY);

    frame->SetClientSize(m_emulatorInfo.m_emulatorDeviceSize.x,
                         m_emulatorInfo.m_emulatorDeviceSize.y);

    // and show it (the frames, unlike simple controls, are not shown when
    // created initially)
    frame->Show(true);

#ifdef __WXX11__
    m_xnestWindow = new wxAdoptedWindow;

    wxString cmd;
    cmd.Printf(wxT("Xnest :%s -geometry %dx%d"),
        m_displayNumber.c_str(),
        (int) m_emulatorInfo.m_emulatorScreenSize.x,
        (int) m_emulatorInfo.m_emulatorScreenSize.y);

    // Asynchronously executes Xnest
    m_xnestPID = wxExecute(cmd);
    if (0 == m_xnestPID)
    {
        frame->Destroy();
        wxMessageBox(wxT("Sorry, could not run Xnest. Please check your PATH."));
        return false;
    }

    wxReparenter reparenter;
    if (!reparenter.WaitAndReparent(m_containerWindow, m_xnestWindow, wxT("Xnest")))
    {
        wxMessageBox(wxT("Sorry, could not reparent Xnest.."));
        frame->Destroy();
        return false;
    }

#endif
    m_containerWindow->DoResize();

    // success: wxApp::OnRun() will be called which will enter the main message
    // loop and the application will run. If we returned false here, the
    // application would exit immediately.
    return true;
}

// Prepend the current program directory to the name
wxString wxEmulatorApp::GetFullAppPath(const wxString& filename) const
{
    wxString path(m_appDir);
    if (path.Last() != '\\' && path.Last() != '/' && filename[0] != '\\' && filename[0] != '/')
#ifdef __X__
        path += '/';
#else
        path += '\\';
#endif
    path += filename;

    return path;
}


// Load the specified emulator.
// For now, hard-wired. TODO: make this configurable
bool wxEmulatorApp::LoadEmulator(const wxString& appDir)
{
    // Load config file and bitmaps
    return m_emulatorInfo.Load(appDir);
}

// ----------------------------------------------------------------------------
// main frame
// ----------------------------------------------------------------------------

// frame constructor
wxEmulatorFrame::wxEmulatorFrame(const wxString& title,
    const wxPoint& pos, const wxSize& size)
    : wxFrame(NULL, wxID_ANY, title, pos, size)
{
    // set the frame icon
    SetIcon(wxICON(emulator));

#if wxUSE_MENUS
    // create a menu bar
    wxMenu *menuFile = new wxMenu;

    // the "About" item should be in the help menu
    wxMenu *helpMenu = new wxMenu;
    helpMenu->Append(Emulator_About, _T("&About...\tF1"), _T("Show about dialog"));

    menuFile->Append(Emulator_Quit, _T("E&xit\tAlt-X"), _T("Quit this program"));

    // now append the freshly created menu to the menu bar...
    wxMenuBar *menuBar = new wxMenuBar();
    menuBar->Append(menuFile, _T("&File"));
    menuBar->Append(helpMenu, _T("&Help"));

    // ... and attach this menu bar to the frame
    SetMenuBar(menuBar);
#endif // wxUSE_MENUS

#if wxUSE_STATUSBAR
    // create a status bar just for fun (by default with 1 pane only)
    CreateStatusBar(2);
#endif // wxUSE_STATUSBAR
}


// event handlers

void wxEmulatorFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
{
    // true is to force the frame to close
    Close(true);
}

void wxEmulatorFrame::OnAbout(wxCommandEvent& WXUNUSED(event))