emulator.cpp

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

{
    wxString msg;
    msg.Printf( _T("wxEmulator is an environment for testing embedded X11 apps.\n"));

    wxMessageBox(msg, _T("About wxEmulator"), wxOK | wxICON_INFORMATION, this);
}

void wxEmulatorFrame::OnCloseWindow(wxCloseEvent& WXUNUSED(event))
{
#ifdef __WXX11__
    if (wxGetApp().m_xnestWindow)
    {
        wxGetApp().m_xnestWindow->SetHandle((WXWindow) NULL);
    }
#endif
    this->Destroy();
    if (wxGetApp().m_xnestPID > 0)
    {
        wxKill(wxGetApp().m_xnestPID);
        wxGetApp().m_xnestPID = 0;
    }
}

IMPLEMENT_CLASS(wxEmulatorContainer, wxWindow)

BEGIN_EVENT_TABLE(wxEmulatorContainer, wxWindow)
    EVT_SIZE(wxEmulatorContainer::OnSize)
    EVT_PAINT(wxEmulatorContainer::OnPaint)
    EVT_ERASE_BACKGROUND(wxEmulatorContainer::OnEraseBackground)
END_EVENT_TABLE()

wxEmulatorContainer::wxEmulatorContainer(wxWindow* parent, wxWindowID id):
    wxWindow(parent, id, wxDefaultPosition, wxDefaultSize)
{
}

void wxEmulatorContainer::OnSize(wxSizeEvent& WXUNUSED(event))
{
    DoResize();
}

void wxEmulatorContainer::DoResize()
{
    wxSize sz = GetClientSize();
    if (wxGetApp().m_xnestWindow
#ifdef __WXX11__
        && wxGetApp().m_xnestWindow->GetMainWindow()
#endif
        )
    {
        int deviceWidth = wxGetApp().m_emulatorInfo.m_emulatorDeviceSize.x;
        int deviceHeight = wxGetApp().m_emulatorInfo.m_emulatorDeviceSize.y;

        int x = wxMax(0, (int) ((sz.x - deviceWidth)/2.0));
        int y = wxMax(0, (int) ((sz.y - deviceHeight)/2.0));

        x += wxGetApp().m_emulatorInfo.m_emulatorScreenPosition.x;
        y += wxGetApp().m_emulatorInfo.m_emulatorScreenPosition.y;

        wxGetApp().m_xnestWindow->Move(x, y);
    }
    Refresh();
}

void wxEmulatorContainer::OnPaint(wxPaintEvent& WXUNUSED(event))
{
    wxPaintDC dc(this);

    wxSize sz = GetClientSize();
    if (wxGetApp().m_emulatorInfo.m_emulatorBackgroundBitmap.Ok())
    {
        int deviceWidth = wxGetApp().m_emulatorInfo.m_emulatorDeviceSize.x;
        int deviceHeight = wxGetApp().m_emulatorInfo.m_emulatorDeviceSize.y;

        int x = wxMax(0, (int) ((sz.x - deviceWidth)/2.0));
        int y = wxMax(0, (int) ((sz.y - deviceHeight)/2.0));

        dc.DrawBitmap(wxGetApp().m_emulatorInfo.m_emulatorBackgroundBitmap, x, y);
    }
}

void wxEmulatorContainer::OnEraseBackground(wxEraseEvent& event)
{
    wxDC* dc wxDUMMY_INITIALIZE(NULL);

    if (event.GetDC())
    {
        dc = event.GetDC();
    }
    else
    {
        dc = new wxClientDC(this);
    }

    dc->SetBackground(wxBrush(wxGetApp().m_emulatorInfo.m_emulatorBackgroundColour, wxSOLID));
    dc->Clear();

    if (!event.GetDC())
        delete dc;
}

// Information about the emulator decorations

void wxEmulatorInfo::Copy(const wxEmulatorInfo& info)
{
    m_emulatorFilename = info.m_emulatorFilename;
    m_emulatorTitle = info.m_emulatorTitle;
    m_emulatorDescription = info.m_emulatorDescription;
    m_emulatorScreenPosition = info.m_emulatorScreenPosition;
    m_emulatorScreenSize = info.m_emulatorScreenSize;
    m_emulatorBackgroundBitmap = info.m_emulatorBackgroundBitmap;
    m_emulatorBackgroundBitmapName = info.m_emulatorBackgroundBitmapName;
    m_emulatorBackgroundColour = info.m_emulatorBackgroundColour;
    m_emulatorDeviceSize = info.m_emulatorDeviceSize;
}

// Initialisation
void wxEmulatorInfo::Init()
{
    m_emulatorDeviceSize = wxSize(260, 340);
    m_emulatorScreenSize = wxSize(240, 320);
}

// Loads bitmaps
bool wxEmulatorInfo::Load(const wxString& appDir)
{
    // Try to find absolute path
    wxString absoluteConfigPath = m_emulatorFilename;
    if ( !::wxIsAbsolutePath(absoluteConfigPath) )
    {
        wxString currDir = wxGetCwd();
        absoluteConfigPath = currDir + wxString(wxFILE_SEP_PATH) + m_emulatorFilename;
        if ( !wxFile::Exists(absoluteConfigPath) )
        {
            absoluteConfigPath = appDir + wxString(wxFILE_SEP_PATH)
                + m_emulatorFilename;
        }
    }

    if ( !wxFile::Exists(absoluteConfigPath) )
    {
        wxString str;
        str.Printf( wxT("Could not find config file %s"),
            absoluteConfigPath.c_str() );

        wxMessageBox(str);
        return false;
    }

    wxString rootPath = wxPathOnly(absoluteConfigPath);

    {
        wxFileConfig config(wxT("wxEmulator"), wxT("wxWidgets"),
            absoluteConfigPath, wxEmptyString, wxCONFIG_USE_LOCAL_FILE);

        config.Read(wxT("/General/title"), & m_emulatorTitle);
        config.Read(wxT("/General/description"), & m_emulatorDescription);
        config.Read(wxT("/General/backgroundBitmap"), & m_emulatorBackgroundBitmapName);

        wxString colString;
        if (config.Read(wxT("/General/backgroundColour"), & colString) ||
            config.Read(wxT("/General/backgroundColor"), & colString)
           )
        {
            m_emulatorBackgroundColour = wxHexStringToColour(colString);
        }

        int x = 0, y = 0, w = 0, h = 0, dw = 0, dh = 0;
        config.Read(wxT("/General/screenX"), & x);
        config.Read(wxT("/General/screenY"), & y);
        config.Read(wxT("/General/screenWidth"), & w);
        config.Read(wxT("/General/screenHeight"), & h);
        if (config.Read(wxT("/General/deviceWidth"), & dw) && config.Read(wxT("/General/deviceHeight"), & dh))
        {
            m_emulatorDeviceSize = wxSize(dw, dh);
        }

        m_emulatorScreenPosition = wxPoint(x, y);
        m_emulatorScreenSize = wxSize(w, h);
    }

    if (!m_emulatorBackgroundBitmapName.empty())
    {
        wxString absoluteBackgroundBitmapName = rootPath + wxString(wxFILE_SEP_PATH) + m_emulatorBackgroundBitmapName;
        if ( !wxFile::Exists(absoluteBackgroundBitmapName) )
        {
            wxString str;
            str.Printf( wxT("Could not find bitmap %s"),
                absoluteBackgroundBitmapName.c_str() );
            wxMessageBox(str);
            return false;
        }

        wxBitmapType type = wxDetermineImageType(m_emulatorBackgroundBitmapName);
        if (type == wxBITMAP_TYPE_INVALID)
            return false;

        if (!m_emulatorBackgroundBitmap.LoadFile(m_emulatorBackgroundBitmapName, type))
        {
            wxString str;
            str.Printf( wxT("Could not load bitmap file %s"),
                m_emulatorBackgroundBitmapName.c_str() );
            wxMessageBox(str);
            return false;
        }

        m_emulatorDeviceSize = wxSize(m_emulatorBackgroundBitmap.GetWidth(),
            m_emulatorBackgroundBitmap.GetHeight());
    }
    return true;
}

// Returns the image type, or -1, determined from the extension.
wxBitmapType wxDetermineImageType(const wxString& filename)
{
    wxString path, name, ext;

    wxSplitPath(filename, & path, & name, & ext);

    ext.MakeLower();
    if (ext == _T("jpg") || ext == _T("jpeg"))
        return wxBITMAP_TYPE_JPEG;
    if (ext == _T("gif"))
        return wxBITMAP_TYPE_GIF;
    if (ext == _T("bmp"))
        return wxBITMAP_TYPE_BMP;
    if (ext == _T("png"))
        return wxBITMAP_TYPE_PNG;
    if (ext == _T("pcx"))
        return wxBITMAP_TYPE_PCX;
    if (ext == _T("tif") || ext == _T("tiff"))
        return wxBITMAP_TYPE_TIF;

    return wxBITMAP_TYPE_INVALID;
}

// Convert a colour to a 6-digit hex string
wxString wxColourToHexString(const wxColour& col)
{
    wxString hex;

    hex += wxDecToHex(col.Red());
    hex += wxDecToHex(col.Green());
    hex += wxDecToHex(col.Blue());

    return hex;
}

// Convert 6-digit hex string to a colour
wxColour wxHexStringToColour(const wxString& hex)
{
    unsigned char r = (unsigned char)wxHexToDec(hex.Mid(0, 2));
    unsigned char g = (unsigned char)wxHexToDec(hex.Mid(2, 2));
    unsigned char b = (unsigned char)wxHexToDec(hex.Mid(4, 2));

    return wxColour(r, g, b);
}

// Find the absolute path where this application has been run from.
// argv0 is wxTheApp->argv[0]
// cwd is the current working directory (at startup)
// appVariableName is the name of a variable containing the directory for this app, e.g.
// MYAPPDIR. This is checked first.

wxString wxFindAppPath(const wxString& argv0, const wxString& cwd, const wxString& appVariableName)
{
    wxString str;

    // Try appVariableName
    if (!appVariableName.empty())
    {
        str = wxGetenv(appVariableName);
        if (!str.empty())
            return str;
    }

    if (wxIsAbsolutePath(argv0))
        return wxPathOnly(argv0);
    else
    {
        // Is it a relative path?
        wxString currentDir(cwd);
        if (!wxEndsWithPathSeparator(currentDir))
            currentDir += wxFILE_SEP_PATH;

        str = currentDir + argv0;
        if ( wxFile::Exists(str) )
            return wxPathOnly(str);
    }

    // OK, it's neither an absolute path nor a relative path.
    // Search PATH.

    wxPathList pathList;
    pathList.AddEnvList(wxT("PATH"));
    str = pathList.FindAbsoluteValidPath(argv0);
    if (!str.empty())
        return wxPathOnly(str);

    // Failed
    return wxEmptyString;
}