qguieventdispatcher_glib.cpp File Reference

#include "qguieventdispatcher_glib_p.h"
#include "qapplication.h"
#include "qx11info_x11.h"
#include "qt_x11_p.h"
#include <glib.h>

Go to the source code of this file.

Classes
struct	GX11EventSource
class	QGuiEventDispatcherGlibPrivate

Functions
static gboolean	x11EventSourceCheck (GSource *s)
static gboolean	x11EventSourceDispatch (GSource *s, GSourceFunc callback, gpointer user_data)
static gboolean	x11EventSourcePrepare (GSource *s, gint *timeout)

Variables
static GSourceFuncs	x11EventSourceFuncs

Function Documentation

x11EventSourceCheck()

static gboolean x11EventSourceCheck ( GSource *  s )

static

Definition at line 82 of file qguieventdispatcher_glib.cpp.

{
    GX11EventSource *source = reinterpret_cast<GX11EventSource *>(s);
    return (XEventsQueued(X11->display, QueuedAfterFlush)
            || (!(source->flags & QEventLoop::ExcludeUserInputEvents)
                && !source->d->queuedUserInputEvents.isEmpty()));
}

x11EventSourceDispatch()

static gboolean x11EventSourceDispatch ( GSource *  s, GSourceFunc  callback, gpointer  user_data  )

static

Definition at line 90 of file qguieventdispatcher_glib.cpp.

{
    GX11EventSource *source = reinterpret_cast<GX11EventSource *>(s);

    ulong marker = XNextRequest(X11->display);
    do {
        XEvent event;
        if (!(source->flags & QEventLoop::ExcludeUserInputEvents)
            && !source->d->queuedUserInputEvents.isEmpty()) {
            // process a pending user input event
            event = source->d->queuedUserInputEvents.takeFirst();
        } else if (XEventsQueued(X11->display, QueuedAlready)) {
            // process events from the X server
            XNextEvent(X11->display, &event);

            if (source->flags & QEventLoop::ExcludeUserInputEvents) {
                // queue user input events
                switch (event.type) {
                case ButtonPress:
                case ButtonRelease:
                case MotionNotify:
                case XKeyPress:
                case XKeyRelease:
                case EnterNotify:
                case LeaveNotify:
                    source->d->queuedUserInputEvents.append(event);
                    continue;

                case ClientMessage:
                    // only keep the wm_take_focus and
                    // _qt_scrolldone protocols, queue all other
                    // client messages
                    if (event.xclient.format == 32) {
                        if (event.xclient.message_type == ATOM(WM_PROTOCOLS) &&
                            (Atom) event.xclient.data.l[0] == ATOM(WM_TAKE_FOCUS)) {
                            break;
                        } else if (event.xclient.message_type == ATOM(_QT_SCROLL_DONE)) {
                            break;
                        }
                    }
                    source->d->queuedUserInputEvents.append(event);
                    continue;

                default:
                    break;
                }
            }
        } else {
            // no event to process
            break;
        }

        // send through event filter
        if (source->q->filterEvent(&event))
            continue;

        if (qApp->x11ProcessEvent(&event) == 1)
            return true;

        if (event.xany.serial >= marker)
            goto out;
    } while (XEventsQueued(X11->display, QueuedAfterFlush));

 out:

    source->d->runTimersOnceWithNormalPriority();

    if (callback)
        callback(user_data);
    return true;
}

x11EventSourcePrepare()

static gboolean x11EventSourcePrepare ( GSource *  s, gint *  timeout  )

static

Definition at line 72 of file qguieventdispatcher_glib.cpp.

{
    if (timeout)
        *timeout = -1;
    GX11EventSource *source = reinterpret_cast<GX11EventSource *>(s);
    return (XEventsQueued(X11->display, QueuedAfterFlush)
            || (!(source->flags & QEventLoop::ExcludeUserInputEvents)
                && !source->d->queuedUserInputEvents.isEmpty()));
}

Variable Documentation

x11EventSourceFuncs

GSourceFuncs x11EventSourceFuncs

static

Initial value:

= {
    x11EventSourcePrepare,
    x11EventSourceCheck,
    x11EventSourceDispatch,
    NULL,
    NULL,
    NULL
}

Definition at line 162 of file qguieventdispatcher_glib.cpp.

Referenced by QGuiEventDispatcherGlibPrivate::QGuiEventDispatcherGlibPrivate().