qapplication_x11.cpp

qt-x11-opensource-src-4.1.4.tar.gz源码

                               False, XA_ATOM, &type, &format, &nitems, &after, &data);

            if (type == XA_ATOM && format == 32) {
                ts.write(reinterpret_cast<char *>(data), nitems * 4);
                offset += nitems;
            } else
                after = 0;
            if (data)
                XFree(data);
        }

        // compute nitems
        QByteArray buffer(ts.buffer());
        nitems = buffer.size() / sizeof(Window);
        X11->net_virtual_root_list = new Window[nitems + 1];
        Window *a = (Window *) buffer.data();
        uint i;
        for (i = 0; i < nitems; i++)
            X11->net_virtual_root_list[i] = a[i];
        X11->net_virtual_root_list[nitems] = 0;
    }
}

static void qt_net_update_user_time(QWidget *tlw)
{
    XChangeProperty(X11->display, tlw->winId(), ATOM(_NET_WM_USER_TIME),
                    XA_CARDINAL, 32, PropModeReplace, (unsigned char *) &X11->userTime, 1);
}

static void qt_check_focus_model()
{
    Window fw = XNone;
    int unused;
    XGetInputFocus(X11->display, &fw, &unused);
    if (fw == PointerRoot)
        X11->focus_model = QX11Data::FM_PointerRoot;
    else
        X11->focus_model = QX11Data::FM_Other;
}

#ifndef QT_NO_TABLET
static bool isXInputSupported(Display *dpy)
{
    Bool exists;
    XExtensionVersion *version;
    exists = XQueryExtension(dpy, "XInputExtension", &X11->xinput_major,
                             &X11->xinput_eventbase, &X11->xinput_errorbase);
    if (!exists)
        return false;
    version = XGetExtensionVersion(dpy, "XInputExtension");
    if (!version || version == reinterpret_cast<XExtensionVersion *>(NoSuchExtension))
        return false;

    XFree(version);
    return true;
}
#endif

/*****************************************************************************
  qt_init() - initializes Qt for X11
 *****************************************************************************/

#define XK_MISCELLANY
#define XK_LATIN1
#define XK_KOREAN
#define XK_XKB_KEYS
#include <X11/keysymdef.h>

#if !defined(QT_NO_FONTCONFIG)
static void getXDefault(const char *group, const char *key, int *val)
{
    char *str = XGetDefault(X11->display, group, key);
    if (str) {
        char *end = 0;
        int v = strtol(str, &end, 0);
        if (str != end)
            *val = v;
    }
}

static void getXDefault(const char *group, const char *key, double *val)
{
    char *str = XGetDefault(X11->display, group, key);
    if (str) {
        char *end = 0;
        double v = strtod(str, &end);
        if (str != end)
            *val = v;
    }
}

static void getXDefault(const char *group, const char *key, bool *val)
{
    char *str = XGetDefault(X11->display, group, key);
    if (str) {
        char c = str[0];
        if (isupper((int)c))
            c = tolower(c);
        if (c == 't' || c == 'y' || c == '1')
            *val = true;
        else if (c == 'f' || c == 'n' || c == '0')
            *val = false;
        if (c == 'o') {
            c = str[1];
            if (isupper((int)c))
                c = tolower(c);
            if (c == 'n')
                *val = true;
            if (c == 'f')
                *val = false;
        }
    }
}
#endif

// ### This should be static but it isn't because of the friend declaration
// ### in qpaintdevice.h which then should have a static too but can't have
// ### it because "storage class specifiers invalid in friend function
// ### declarations" :-) Ideas anyone?
void qt_init(QApplicationPrivate *priv, int,
	     Display *display, Qt::HANDLE visual, Qt::HANDLE colormap)
{
    setlocale(LC_ALL, "");                // use correct char set mapping
    setlocale(LC_NUMERIC, "C");        // make sprintf()/scanf() work

    X11 = new QX11Data;
    X11->display = display;
    X11->displayName = 0;
    X11->foreignDisplay = (display != 0);
    X11->focus_model = -1;

    // RANDR
    X11->use_xrandr = false;
    X11->xrandr_major = 0;
    X11->xrandr_eventbase = 0;
    X11->xrandr_errorbase = 0;

    // RENDER
    X11->use_xrender = false;
    X11->xrender_major = 0;
    X11->xrender_eventbase = 0;
    X11->xrender_errorbase = 0;

    // XInputExtension
    X11->use_xinput = false;
    X11->xinput_major = 0;
    X11->xinput_eventbase = 0;
    X11->xinput_errorbase = 0;

    X11->sip_serial = 0;
    X11->net_supported_list = 0;
    X11->net_virtual_root_list = 0;
    X11->wm_client_leader = 0;
    X11->screens = 0;
    X11->screenCount = 0;
    X11->time = CurrentTime;
    X11->userTime = CurrentTime;
    X11->ignore_badwindow = false;
    X11->seen_badwindow = false;

    X11->motifdnd_active = false;

    X11->default_im = QLatin1String("imsw-multi");
    priv->inputContext = 0;

    // colormap control
    X11->visual_class = -1;
    X11->visual_id = -1;
    X11->color_count = 0;
    X11->custom_cmap = false;

    // outside visual/colormap
    X11->visual = reinterpret_cast<Visual *>(visual);
    X11->colormap = colormap;

#ifndef QT_NO_XRENDER
    memset(X11->solid_fills, 0, sizeof(X11->solid_fills));
    for (int i = 0; i < X11->solid_fill_count; ++i)
        X11->solid_fills[i].screen = -1;
    memset(X11->pattern_fills, 0, sizeof(X11->pattern_fills));
    for (int i = 0; i < X11->pattern_fill_count; ++i)
        X11->pattern_fills[i].screen = -1;
#endif

    X11->startupId = 0;

    int argc = priv->argc;
    char **argv = priv->argv;

    if (X11->display) {
        // Qt part of other application

        // Set application name and class
        appName = qstrdup("Qt-subapplication");
        char *app_class = 0;
        if (argv) {
            const char* p = strrchr(argv[0], '/');
            app_class = qstrdup(p ? p + 1 : argv[0]);
            if (app_class[0])
                app_class[0] = toupper(app_class[0]);
        }
        appClass = app_class;
    } else {
        // Qt controls everything (default)

        // Set application name and class
        char *app_class = 0;
        if (argv && argv[0]) {
            const char *p = strrchr(argv[0], '/');
            appName = p ? p + 1 : argv[0];
            app_class = qstrdup(appName);
            if (app_class[0])
                app_class[0] = toupper(app_class[0]);
        }
        appClass = app_class;
    }

    // Install default error handlers
    original_x_errhandler = XSetErrorHandler(qt_x_errhandler);
    original_xio_errhandler = XSetIOErrorHandler(qt_xio_errhandler);

    // Get command line params
    int j = argc ? 1 : 0;
    for (int i=1; i<argc; i++) {
        if (argv[i] && *argv[i] != '-') {
            argv[j++] = argv[i];
            continue;
        }
        QByteArray arg(argv[i]);
        if (arg == "-display") {
            if (++i < argc && !X11->display)
                X11->displayName = argv[i];
        } else if (arg == "-fn" || arg == "-font") {
            if (++i < argc)
                appFont = argv[i];
        } else if (arg == "-bg" || arg == "-background") {
            if (++i < argc)
                appBGCol = argv[i];
        } else if (arg == "-btn" || arg == "-button") {
            if (++i < argc)
                appBTNCol = argv[i];
        } else if (arg == "-fg" || arg == "-foreground") {
            if (++i < argc)
                appFGCol = argv[i];
        } else if (arg == "-name") {
            if (++i < argc)
                appName = argv[i];
        } else if (arg == "-title") {
            if (++i < argc)
                mwTitle = argv[i];
        } else if (arg == "-geometry") {
            if (++i < argc)
                mwGeometry = argv[i];
        } else if (arg == "-im") {
            if (++i < argc)
                qt_ximServer = argv[i];
#if 0
        } else if (arg == "-noxim") {
            noxim=true;
#endif
        } else if (arg == "-iconic") {
            mwIconic = !mwIconic;
        } else if (arg == "-ncols") {   // xv and netscape use this name
            if (++i < argc)
                X11->color_count = qMax(0,atoi(argv[i]));
        } else if (arg == "-visual") {  // xv and netscape use this name
            if (++i < argc && !X11->visual) {
                QString s = QString::fromLocal8Bit(argv[i]).toLower();
                if (s == QLatin1String("staticgray"))
                    X11->visual_class = StaticGray;
                else if (s == QLatin1String("grayscale"))
                    X11->visual_class = XGrayScale;
                else if (s == QLatin1String("staticcolor"))
                    X11->visual_class = StaticColor;
                else if (s == QLatin1String("pseudocolor"))
                    X11->visual_class = PseudoColor;
                else if (s == QLatin1String("truecolor"))
                    X11->visual_class = TrueColor;
                else if (s == QLatin1String("directcolor"))
                    X11->visual_class = DirectColor;
                else
                    X11->visual_id = static_cast<int>(strtol(argv[i], 0, 0));
            }
#ifndef QT_NO_XIM
        } else if (arg == "-inputstyle/") {
            if (++i < argc) {
                QString s = QString::fromLocal8Bit(argv[i]).toLower();
                if (s == QLatin1String("onthespot"))
                    qt_xim_preferred_style = XIMPreeditCallbacks |
                                             XIMStatusNothing;
                else if (s == QLatin1String("overthespot"))
                    qt_xim_preferred_style = XIMPreeditPosition |
                                             XIMStatusNothing;
                else if (s == QLatin1String("offthespot"))
                    qt_xim_preferred_style = XIMPreeditArea |
                                             XIMStatusArea;
                else if (s == QLatin1String("root"))
                    qt_xim_preferred_style = XIMPreeditNothing |
                                             XIMStatusNothing;
            }
#endif
        } else if (arg == "-cmap") {    // xv uses this name
            if (!X11->colormap)
                X11->custom_cmap = true;
        }
#if defined(QT_DEBUG)
        else if (arg == "-sync")
            appSync = !appSync;
        else if (arg == "-nograb")
            appNoGrab = !appNoGrab;
        else if (arg == "-dograb")
            appDoGrab = !appDoGrab;
#endif
        else
            argv[j++] = argv[i];
    }

    priv->argc = j;

#if defined(QT_DEBUG) && defined(Q_OS_LINUX)
    if (!appNoGrab && !appDoGrab) {
        QString s;
        s.sprintf("/proc/%d/cmdline", getppid());
        QFile f(s);
        if (f.open(QIODevice::ReadOnly)) {
            s.clear();
            char c;
            while (f.getChar(&c) && c) {
                if (c == '/')
                    s.clear();
                else
                    s += QLatin1Char(c);
            }
            if (s == QLatin1String("gdb")) {
                appNoGrab = true;
                qDebug("Qt: gdb: -nograb added to command-line options.\n"
                       "\t Use the -dograb option to enforce grabbing.");
            }
            f.close();
        }
    }
#endif

    // Connect to X server
    if (qt_is_gui_used && !X11->display) {
        if ((X11->display = XOpenDisplay(X11->displayName)) == 0) {
            qWarning("%s: cannot connect to X server %s", appName,
                     XDisplayName(X11->displayName));
            QApplicationPrivate::reset_instance_pointer();
            exit(1);
        }

        if (appSync)                                // if "-sync" argument
            XSynchronize(X11->display, true);
    }

    // Common code, regardless of whether display is foreign.

    // Get X parameters