qapplication.cpp

奇趣公司比较新的qt/emd版本

int qt_antialiasing_threshold = -1;
static int drag_time = 500;
static int drag_distance = 4;
static Qt::LayoutDirection layout_direction = Qt::LeftToRight;
QSize QApplicationPrivate::app_strut = QSize(0,0); // no default application strut
bool QApplicationPrivate::animate_ui = true;
bool QApplicationPrivate::animate_menu = false;
bool QApplicationPrivate::fade_menu = false;
bool QApplicationPrivate::animate_combo = false;
bool QApplicationPrivate::animate_tooltip = false;
bool QApplicationPrivate::fade_tooltip = false;
bool QApplicationPrivate::animate_toolbox = false;
bool QApplicationPrivate::widgetCount = false;
QString* QApplicationPrivate::styleOverride = 0;
#ifdef QT_KEYPAD_NAVIGATION
bool QApplicationPrivate::keypadNavigation = false;
QWidget *QApplicationPrivate::oldEditFocus = 0;
#endif

bool qt_tabletChokeMouse = false;
static bool force_reverse = false;

// ######## move to QApplicationPrivate
// Default application palettes and fonts (per widget type)

typedef QHash<QByteArray, QPalette> PaletteHash;
Q_GLOBAL_STATIC(PaletteHash, app_palettes)
PaletteHash *qt_app_palettes_hash()
{
    return app_palettes();
}

typedef QHash<QByteArray, QFont> FontHash;
Q_GLOBAL_STATIC(FontHash, app_fonts)
FontHash *qt_app_fonts_hash()
{
    return app_fonts();
}

QWidgetList *QApplicationPrivate::popupWidgets = 0;        // has keyboard input focus

QDesktopWidget *qt_desktopWidget = 0;                // root window widgets
#ifndef QT_NO_CLIPBOARD
QClipboard              *qt_clipboard = 0;        // global clipboard object
#endif
QWidgetList * qt_modal_stack=0;                // stack of modal widgets

/*!
    \internal
*/
void QApplicationPrivate::process_cmdline()
{
    Q_Q(QApplication);
    Q_UNUSED(q);// only static members being used.
    // process platform-indep command line
    if (!qt_is_gui_used || !argc)
        return;

    int i, j;

    j = 1;
    for (i=1; i<argc; i++) { // if you add anything here, modify QCoreApplication::arguments()
        if (argv[i] && *argv[i] != '-') {
            argv[j++] = argv[i];
            continue;
        }
        QByteArray arg = argv[i];
        arg = arg;
        QString s;
        if (arg == "-qdevel" || arg == "-qdebug") {
            // obsolete argument
        } else if (arg.indexOf("-style=", 0) != -1) {
            s = QString::fromLocal8Bit(arg.right(arg.length() - 7).toLower());
        } else if (arg == "-style" && i < argc-1) {
            s = QString::fromLocal8Bit(argv[++i]).toLower();
#ifndef QT_NO_SESSIONMANAGER
        } else if (arg == "-session" && i < argc-1) {
            ++i;
            if (argv[i] && *argv[i]) {
                session_id = QString::fromLatin1(argv[i]);
                int p = session_id.indexOf(QLatin1Char('_'));
                if (p >= 0) {
                    session_key = session_id.mid(p +1);
                    session_id = session_id.left(p);
                }
                is_session_restored = true;
            }
#endif
#ifndef QT_NO_STYLE_STYLESHEET
        } else if (arg == "-stylesheet" && i < argc -1) {
            styleSheet = QLatin1String("file:///");
            styleSheet.append(QString::fromLocal8Bit(argv[++i]));
        } else if (arg.indexOf("-stylesheet=") != -1) {
            styleSheet = QLatin1String("file:///");
            styleSheet.append(QString::fromLocal8Bit(arg.right(arg.length() - 12)));
#endif
        } else if (qstrcmp(arg, "-reverse") == 0) {
            force_reverse = true;
            q->setLayoutDirection(Qt::RightToLeft);
        } else if (qstrcmp(arg, "-widgetcount") == 0) {
            widgetCount = true;
        } else {
            argv[j++] = argv[i];
        }
        if (!s.isEmpty()) {
            if (app_style) {
                delete app_style;
                app_style = 0;
            }
            if (!styleOverride)
                styleOverride = new QString;
            *styleOverride = s;
        }
    }

    if(j < argc) {
        argv[j] = 0;
        argc = j;
    }
}

/*!
  Initializes the window system and constructs an application object
  with \a argc command line arguments in \a argv.

  \warning The data pointed to by \a argc and \a argv must stay valid
  for the entire lifetime of the QApplication object.

  The global \c qApp pointer refers to this application object. Only
  one application object should be created.

  This application object must be constructed before any \link
  QPaintDevice paint devices\endlink (including widgets, pixmaps, bitmaps
  etc.).

  Note that \a argc and \a argv might be changed. Qt removes command
  line arguments that it recognizes. The original \a argc and \a argv
  can be accessed later with arguments().

  Qt debugging options (not available if Qt was compiled without the
  QT_DEBUG flag defined):
  \list
  \o -nograb, tells Qt that it must never grab the mouse or the keyboard.
  \o -dograb (only under X11), running under a debugger can cause
  an implicit -nograb, use -dograb to override.
  \o -sync (only under X11), switches to synchronous mode for
        debugging.
  \endlist

  See \link debug.html Debugging Techniques \endlink for a more
  detailed explanation.

  All Qt programs automatically support the following command line options:
  \list
  \o -style= \e style, sets the application GUI style. Possible values
       are \c motif, \c windows, and \c platinum. If you compiled Qt
       with additional styles or have additional styles as plugins these
       will be available to the \c -style command line option.
  \o -style \e style, is the same as listed above.
  \o -stylesheet= \e stylesheet, sets the application \l styleSheet. The value
       must be a path to a file that contains the Style Sheet. Note that relative URLs
       in the Style Sheet file are relative to the Style Sheet file's path.
  \o -stylesheet \e stylesheet, is the same as listed above.
  \o -session= \e session, restores the application from an earlier
       \link session.html session \endlink.
  \o -session \e session, is the same as listed above.
  \o -widgetcount, prints debug message at the end about number of widgets left
        undestroyed and maximum number of widgets existed at the same time
  \o -reverse, sets the application's layout direction to Qt::RightToLeft

  \endlist

  The Windows version of Qt also support one additional command line
  option, if Direct3D support has been compiled into Qt:
  \list
  \o -direct3d will make the Direct3D paint engine the default widget
               paint engine in Qt. \bold {This functionality is experimental.}
  \endlist

  The X11 version of Qt also supports some traditional X11
  command line options:
  \list
  \o -display \e display, sets the X display (default is $DISPLAY).
  \o -geometry \e geometry, sets the client geometry of the
        first window that is shown.
  \o -fn or \c -font \e font, defines the application font. The
  font should be specified using an X logical font description.
  \o -bg or \c -background \e color, sets the default background color
        and an application palette (light and dark shades are calculated).
  \o -fg or \c -foreground \e color, sets the default foreground color.
  \o -btn or \c -button \e color, sets the default button color.
  \o -name \e name, sets the application name.
  \o -title \e title, sets the application title.
  \o -visual \c TrueColor, forces the application to use a TrueColor visual
       on an 8-bit display.
  \o -ncols \e count, limits the number of colors allocated in the
       color cube on an 8-bit display, if the application is using the
       QApplication::ManyColor color specification. If \e count is
       216 then a 6x6x6 color cube is used (i.e. 6 levels of red, 6 of green,
       and 6 of blue); for other values, a cube
       approximately proportional to a 2x3x1 cube is used.
  \o -cmap, causes the application to install a private color map
       on an 8-bit display.
  \o -im, sets the input method server (equivalent to setting the XMODIFIERS
       environment variable)
  \o -noxim, disables the input method framework ("no X input method").
  \o -inputstyle, defines how the input is inserted into the given widget. E.g.,
       \c onTheSpot makes the input appear directly in the widget, while
       \c overTheSpot makes the input appear in a box floating over the
       widget and is not inserted until the editing is done.
  \endlist

  \sa arguments()
*/

QApplication::QApplication(int &argc, char **argv)
    : QCoreApplication(*new QApplicationPrivate(argc, argv, GuiClient))
{ Q_D(QApplication); d->construct(); }

QApplication::QApplication(int &argc, char **argv, int _internal)
    : QCoreApplication(*new QApplicationPrivate(argc, argv, GuiClient))
{ Q_D(QApplication); d->construct(); QApplicationPrivate::app_compile_version = _internal;}


/*!
    Constructs an application object with \a argc command line arguments
    in \a argv. If \a GUIenabled is true, a GUI application is
    constructed, otherwise a non-GUI (console) application is created.

    Set \a GUIenabled to false for programs without a graphical user
    interface that should be able to run without a window system.

    On X11, the window system is initialized if \a GUIenabled is true.
    If \a GUIenabled is false, the application does not connect to the
    X server. On Windows and Macintosh, currently the window system is
    always initialized, regardless of the value of GUIenabled. This may
    change in future versions of Qt.

    The following example shows how to create an application that
    uses a graphical interface when available.

    \code
        int main(int argc, char **argv)
        {
        #ifdef Q_WS_X11
            bool useGUI = getenv("DISPLAY") != 0;
        #else
            bool useGUI = true;
        #endif
            QApplication app(argc, argv, useGUI);

            if (useGUI) {
               // start GUI version
               ...
            } else {
               // start non-GUI version
               ...
            }
            return app.exec();
        }
    \endcode
*/

QApplication::QApplication(int &argc, char **argv, bool GUIenabled )
    : QCoreApplication(*new QApplicationPrivate(argc, argv, GUIenabled ? GuiClient : Tty))
{ Q_D(QApplication); d->construct(); }

QApplication::QApplication(int &argc, char **argv, bool GUIenabled , int _internal)
    : QCoreApplication(*new QApplicationPrivate(argc, argv, GUIenabled ? GuiClient : Tty))
{ Q_D(QApplication); d->construct();  QApplicationPrivate::app_compile_version = _internal;}



/*!
  Constructs an application object with \a argc command line arguments
  in \a argv.

  For Qtopia Core, passing QApplication::GuiServer for \a type
  makes this application the server (equivalent to running with the
  \c -qws option).
*/
QApplication::QApplication(int &argc, char **argv, Type type)
    : QCoreApplication(*new QApplicationPrivate(argc, argv, type))
{ Q_D(QApplication); d->construct(); }

QApplication::QApplication(int &argc, char **argv, Type type , int _internal)
    : QCoreApplication(*new QApplicationPrivate(argc, argv, type))
{ Q_D(QApplication); d->construct();  QApplicationPrivate::app_compile_version = _internal;}


/*!
    \internal
*/
void QApplicationPrivate::construct(
#ifdef Q_WS_X11
                                    Display *dpy, Qt::HANDLE visual, Qt::HANDLE cmap
#endif
                                    )
{
    Q_INIT_RESOURCE(qstyle);
#if !defined(QT_NO_DIRECT3D) && defined(Q_WS_WIN)
    Q_INIT_RESOURCE(qpaintengine_d3d);
#endif

    qt_is_gui_used = (qt_appType != QApplication::Tty);
    process_cmdline();
    // Must be called before initialize()
    qt_init(this, qt_appType
#ifdef Q_WS_X11
            , dpy, visual, cmap
#endif
            );
    initialize();
    eventDispatcher->startingUp();

#ifdef QT_EVAL
    extern void qt_gui_eval_init(uint);
    qt_gui_eval_init(application_type);
#endif
}

#if defined(Q_WS_X11)
// ### a string literal is a cont char*
// ### using it as a char* is wrong and could lead to segfaults
// ### if aargv is modified someday
// ########## make it work with argc == argv == 0
static int aargc = 1;
static char *aargv[] = { (char*)"unknown", 0 };

/*!
  \fn QApplication::QApplication(Display* display, Qt::HANDLE visual, Qt::HANDLE colormap)

  Create an application, given an already open display \a display. If \a
  visual and \a colormap are non-zero, the application will use those as
  the default Visual and Colormap contexts.

  \warning Qt only supports TrueColor visuals at depths higher than 8
  bits-per-pixel.

  This is available only on X11.
*/
QApplication::QApplication(Display* dpy, Qt::HANDLE visual, Qt::HANDLE colormap)
    : QCoreApplication(*new QApplicationPrivate(aargc, aargv, GuiClient))
{
    if (! dpy)
        qWarning("QApplication: Invalid Display* argument");
    Q_D(QApplication);
    d->construct(dpy, visual, colormap);
}

QApplication::QApplication(Display* dpy, Qt::HANDLE visual, Qt::HANDLE colormap, int _internal)
    : QCoreApplication(*new QApplicationPrivate(aargc, aargv, GuiClient))
{
    if (! dpy)
        qWarning("QApplication: Invalid Display* argument");
    Q_D(QApplication);
    d->construct(dpy, visual, colormap);
    QApplicationPrivate::app_compile_version = _internal;
}

/*!
  \fn QApplication::QApplication(Display *display, int &argc, char **argv,
                           Qt::HANDLE visual, Qt::HANDLE colormap)

  Create an application, given an already open \a display and using \a
  argc command line arguments in \a argv. If \a visual and \a colormap
  are non-zero, the application will use those as the default Visual
  and Colormap contexts.

  \warning Qt only supports TrueColor visuals at depths higher than 8
  bits-per-pixel.

  This is available only on X11.

*/
QApplication::QApplication(Display *dpy, int &argc, char **argv,
                           Qt::HANDLE visual, Qt::HANDLE colormap)
    : QCoreApplication(*new QApplicationPrivate(argc, argv, GuiClient))
{
    if (! dpy)
        qWarning("QApplication: Invalid Display* argument");
    Q_D(QApplication);
    d->construct(dpy, visual, colormap);
}

QApplication::QApplication(Display *dpy, int &argc, char **argv,
                           Qt::HANDLE visual, Qt::HANDLE colormap, int _internal)
    : QCoreApplication(*new QApplicationPrivate(argc, argv, GuiClient))
{
    if (! dpy)
        qWarning("QApplication: Invalid Display* argument");
    Q_D(QApplication);
    d->construct(dpy, visual, colormap);
    QApplicationPrivate::app_compile_version = _internal;
}

#endif // Q_WS_X11