Add lighthouse event dispatcher API.

Platform plugin creation is now moved forward in
order to have a platform plugin instance at event
dispatcher creation time.

Plugins are now responsible for implementing
PlatformIntegration::createEventDispatcher and returning
an QAbstractEventDispatcher subclass.

8 files changed, 581 insertions, 0 deletions

diff --git a/src/platformsupport/eventdispatchers/eventdispatchers.pri b/src/platformsupport/eventdispatchers/eventdispatchers.pri
new file mode 100644
index 0000000000..1b207b73d7
--- /dev/null
+++ b/src/platformsupport/eventdispatchers/eventdispatchers.pri
@@ -0,0 +1,16 @@
+unix {
+SOURCES +=\
+    $$PWD/qeventdispatcher_qpa.cpp\
+    $$PWD/qgenericunixeventdispatcher.cpp\
+
+HEADERS +=\
+    $$PWD/qeventdispatcher_qpa_p.h\
+    $$PWD/qgenericunixeventdispatcher_p.h\
+}
+
+contains(QT_CONFIG, glib) {
+    SOURCES +=$$PWD/qeventdispatcher_glib.cpp
+    HEADERS +=$$PWD/qeventdispatcher_glib_p.h
+    QMAKE_CXXFLAGS += $$QT_CFLAGS_GLIB
+    LIBS_PRIVATE += $$QT_LIBS_GLIB
+}
\ No newline at end of file
diff --git a/src/platformsupport/eventdispatchers/fontdatabases.pri b/src/platformsupport/eventdispatchers/fontdatabases.pri
new file mode 100644
index 0000000000..0e282d97dd
--- /dev/null
+++ b/src/platformsupport/eventdispatchers/fontdatabases.pri
@@ -0,0 +1,10 @@
+DEFINES += QT_COMPILES_IN_HARFBUZZ
+INCLUDEPATH += $$QT_SOURCE_TREE/src/3rdparty/harfbuzz/src
+
+unix {
+    include($$PWD/basicunix/basicunix.pri)
+    include($$PWD/genericunix/genericunix.pri)
+    contains(QT_CONFIG,fontconfig) {
+        include($$PWD/fontconfig/fontconfig.pri)
+    }
+}
diff --git a/src/platformsupport/eventdispatchers/qeventdispatcher_glib.cpp b/src/platformsupport/eventdispatchers/qeventdispatcher_glib.cpp
new file mode 100644
index 0000000000..39b14e32af
--- /dev/null
+++ b/src/platformsupport/eventdispatchers/qeventdispatcher_glib.cpp
@@ -0,0 +1,133 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the plugins of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** GNU Lesser General Public License Usage
+** This file may be used under the terms of the GNU Lesser General Public
+** License version 2.1 as published by the Free Software Foundation and
+** appearing in the file LICENSE.LGPL included in the packaging of this
+** file. Please review the following information to ensure the GNU Lesser
+** General Public License version 2.1 requirements will be met:
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights. These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU General
+** Public License version 3.0 as published by the Free Software Foundation
+** and appearing in the file LICENSE.GPL included in the packaging of this
+** file. Please review the following information to ensure the GNU General
+** Public License version 3.0 requirements will be met:
+** http://www.gnu.org/copyleft/gpl.html.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qeventdispatcher_glib_p.h"
+
+#include "qguiapplication.h"
+
+#include "qplatformdefs.h"
+
+#include <glib.h>
+#include "private/qguiapplication_p.h"
+
+#include <qdebug.h>
+
+QT_BEGIN_NAMESPACE
+
+struct GUserEventSource
+{
+    GSource source;
+    QPAEventDispatcherGlib *q;
+};
+
+static gboolean userEventSourcePrepare(GSource *s, gint *timeout)
+{
+    Q_UNUSED(s)
+    Q_UNUSED(timeout)
+
+    return QWindowSystemInterfacePrivate::windowSystemEventsQueued() > 0;
+}
+
+static gboolean userEventSourceCheck(GSource *source)
+{
+    return userEventSourcePrepare(source, 0);
+}
+
+static gboolean userEventSourceDispatch(GSource *s, GSourceFunc, gpointer)
+{
+    GUserEventSource * source = reinterpret_cast<GUserEventSource *>(s);
+
+    QWindowSystemInterfacePrivate::WindowSystemEvent * event;
+    while (QWindowSystemInterfacePrivate::windowSystemEventsQueued()) {
+        event = QWindowSystemInterfacePrivate::getWindowSystemEvent();
+        if (!event)
+            break;
+
+        // send through event filter
+        if (source->q->filterEvent(event)) {
+            delete event;
+            continue;
+        }
+        QGuiApplicationPrivate::processWindowSystemEvent(event);
+        delete event;
+    }
+
+    return true;
+}
+
+
+static GSourceFuncs userEventSourceFuncs = {
+    userEventSourcePrepare,
+    userEventSourceCheck,
+    userEventSourceDispatch,
+    NULL,
+    NULL,
+    NULL
+};
+
+QPAEventDispatcherGlibPrivate::QPAEventDispatcherGlibPrivate(GMainContext *context)
+    : QEventDispatcherGlibPrivate(context)
+{
+    userEventSource = reinterpret_cast<GUserEventSource *>(g_source_new(&userEventSourceFuncs,
+                                                                       sizeof(GUserEventSource)));
+    userEventSource->q = 0;
+    g_source_set_can_recurse(&userEventSource->source, true);
+    g_source_attach(&userEventSource->source, mainContext);
+}
+
+
+QPAEventDispatcherGlib::QPAEventDispatcherGlib(QObject *parent)
+    : QEventDispatcherGlib(*new QPAEventDispatcherGlibPrivate, parent)
+{
+    Q_D(QPAEventDispatcherGlib);
+    d->userEventSource->q = this;
+}
+
+QPAEventDispatcherGlib::~QPAEventDispatcherGlib()
+{
+    Q_D(QPAEventDispatcherGlib);
+
+    g_source_destroy(&d->userEventSource->source);
+    g_source_unref(&d->userEventSource->source);
+    d->userEventSource = 0;
+}
+
+QT_END_NAMESPACE
diff --git a/src/platformsupport/eventdispatchers/qeventdispatcher_glib_p.h b/src/platformsupport/eventdispatchers/qeventdispatcher_glib_p.h
new file mode 100644
index 0000000000..8a34e78357
--- /dev/null
+++ b/src/platformsupport/eventdispatchers/qeventdispatcher_glib_p.h
@@ -0,0 +1,86 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the plugins of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** GNU Lesser General Public License Usage
+** This file may be used under the terms of the GNU Lesser General Public
+** License version 2.1 as published by the Free Software Foundation and
+** appearing in the file LICENSE.LGPL included in the packaging of this
+** file. Please review the following information to ensure the GNU Lesser
+** General Public License version 2.1 requirements will be met:
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights. These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU General
+** Public License version 3.0 as published by the Free Software Foundation
+** and appearing in the file LICENSE.GPL included in the packaging of this
+** file. Please review the following information to ensure the GNU General
+** Public License version 3.0 requirements will be met:
+** http://www.gnu.org/copyleft/gpl.html.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QEVENTDISPATCHER_GLIB_QPA_P_H
+#define QEVENTDISPATCHER_GLIB_QPA_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists for the convenience
+// of the QLibrary class.  This header file may change from
+// version to version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtCore/private/qeventdispatcher_glib_p.h>
+
+typedef struct _GMainContext GMainContext;
+
+QT_BEGIN_NAMESPACE
+class QPAEventDispatcherGlibPrivate;
+
+class QPAEventDispatcherGlib : public QEventDispatcherGlib
+{
+    Q_OBJECT
+    Q_DECLARE_PRIVATE(QPAEventDispatcherGlib)
+
+public:
+    explicit QPAEventDispatcherGlib(QObject *parent = 0);
+    ~QPAEventDispatcherGlib();
+};
+
+struct GUserEventSource;
+
+class QPAEventDispatcherGlibPrivate : public QEventDispatcherGlibPrivate
+{
+    Q_DECLARE_PUBLIC(QPAEventDispatcherGlib)
+public:
+    QPAEventDispatcherGlibPrivate(GMainContext *context = 0);
+    GUserEventSource *userEventSource;
+};
+
+
+QT_END_NAMESPACE
+
+#endif // QEVENTDISPATCHER_GLIB_QPA_P_H
diff --git a/src/platformsupport/eventdispatchers/qeventdispatcher_qpa.cpp b/src/platformsupport/eventdispatchers/qeventdispatcher_qpa.cpp
new file mode 100644
index 0000000000..e6bd4c7f6b
--- /dev/null
+++ b/src/platformsupport/eventdispatchers/qeventdispatcher_qpa.cpp
@@ -0,0 +1,137 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the plugins of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** GNU Lesser General Public License Usage
+** This file may be used under the terms of the GNU Lesser General Public
+** License version 2.1 as published by the Free Software Foundation and
+** appearing in the file LICENSE.LGPL included in the packaging of this
+** file. Please review the following information to ensure the GNU Lesser
+** General Public License version 2.1 requirements will be met:
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights. These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU General
+** Public License version 3.0 as published by the Free Software Foundation
+** and appearing in the file LICENSE.GPL included in the packaging of this
+** file. Please review the following information to ensure the GNU General
+** Public License version 3.0 requirements will be met:
+** http://www.gnu.org/copyleft/gpl.html.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qplatformdefs.h"
+#include "qcoreapplication.h"
+#include "qeventdispatcher_qpa_p.h"
+#include "private/qguiapplication_p.h"
+
+#include <QWindowSystemInterface>
+#include <QtCore/QElapsedTimer>
+#include <QtCore/QAtomicInt>
+#include <QtCore/QSemaphore>
+
+#include <QtCore/QDebug>
+
+#include <errno.h>
+
+QT_BEGIN_NAMESPACE
+
+QT_USE_NAMESPACE
+
+QEventDispatcherQPAPrivate::QEventDispatcherQPAPrivate()
+{
+
+}
+
+QEventDispatcherQPAPrivate::~QEventDispatcherQPAPrivate()
+{
+
+}
+
+QEventDispatcherQPA::QEventDispatcherQPA(QObject *parent)
+    : EVENTDISPATCHERBASE(*new QEventDispatcherQPAPrivate, parent)
+{ }
+
+QEventDispatcherQPA::QEventDispatcherQPA(EVENTDISPATCHERBASEPRIVATE &priv, QObject *parent)
+    : EVENTDISPATCHERBASE(priv, parent)
+{ }
+
+
+QEventDispatcherQPA::~QEventDispatcherQPA()
+{ }
+
+bool QEventDispatcherQPA::processEvents(QEventLoop::ProcessEventsFlags flags)
+{
+    Q_D(QEventDispatcherQPA);
+
+    int nevents = 0;
+
+    // handle gui and posted events
+    d->interrupt = false;
+    QCoreApplication::sendPostedEvents();
+
+    while (!d->interrupt) {        // also flushes output buffer ###can be optimized
+        QWindowSystemInterfacePrivate::WindowSystemEvent *event;
+        if (!(flags & QEventLoop::ExcludeUserInputEvents)
+            && QWindowSystemInterfacePrivate::windowSystemEventsQueued() > 0) {
+            // process a pending user input event
+            event = QWindowSystemInterfacePrivate::getWindowSystemEvent();
+            if (!event)
+                break;
+        } else {
+            break;
+        }
+
+        if (filterEvent(event)) {
+            delete event;
+            continue;
+        }
+        nevents++;
+
+        QGuiApplicationPrivate::processWindowSystemEvent(event);
+        delete event;
+    }
+
+#ifdef Q_OS_MAC // (inverted inheritance on mac: QEventDispatcherMac calls QEventDispatcherQPA)
+    if (!d->interrupt) {
+        if (EVENTDISPATCHERBASE::processEvents(flags)) {
+            EVENTDISPATCHERBASE::processEvents(flags);
+            return true;
+        }
+    }
+#endif
+    return (nevents > 0);
+}
+
+bool QEventDispatcherQPA::hasPendingEvents()
+{
+    extern uint qGlobalPostedEventsCount(); // from qapplication.cpp
+    return qGlobalPostedEventsCount() || QWindowSystemInterfacePrivate::windowSystemEventsQueued();
+}
+
+void QEventDispatcherQPA::flush()
+{
+    if(qApp)
+        qApp->sendPostedEvents();
+}
+
+QT_END_NAMESPACE
diff --git a/src/platformsupport/eventdispatchers/qeventdispatcher_qpa_p.h b/src/platformsupport/eventdispatchers/qeventdispatcher_qpa_p.h
new file mode 100644
index 0000000000..b49510efde
--- /dev/null
+++ b/src/platformsupport/eventdispatchers/qeventdispatcher_qpa_p.h
@@ -0,0 +1,97 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the plugins of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** GNU Lesser General Public License Usage
+** This file may be used under the terms of the GNU Lesser General Public
+** License version 2.1 as published by the Free Software Foundation and
+** appearing in the file LICENSE.LGPL included in the packaging of this
+** file. Please review the following information to ensure the GNU Lesser
+** General Public License version 2.1 requirements will be met:
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights. These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU General
+** Public License version 3.0 as published by the Free Software Foundation
+** and appearing in the file LICENSE.GPL included in the packaging of this
+** file. Please review the following information to ensure the GNU General
+** Public License version 3.0 requirements will be met:
+** http://www.gnu.org/copyleft/gpl.html.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QEVENTDISPATCHER_QPA_H
+#define QEVENTDISPATCHER_QPA_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtCore/qglobal.h>
+#if defined(Q_OS_UNIX)
+#include "private/qeventdispatcher_unix_p.h"
+#define EVENTDISPATCHERBASE QEventDispatcherUNIX
+#define EVENTDISPATCHERBASEPRIVATE QEventDispatcherUNIXPrivate
+#elif defined(Q_OS_WIN)
+#include "private/qeventdispatcher_win_p.h"
+#define EVENTDISPATCHERBASE QEventDispatcherWin32
+#define EVENTDISPATCHERBASEPRIVATE QEventDispatcherWin32Private
+#endif
+
+QT_BEGIN_NAMESPACE
+
+class QEventDispatcherQPAPrivate;
+
+class Q_GUI_EXPORT QEventDispatcherQPA : public EVENTDISPATCHERBASE
+{
+    Q_OBJECT
+    Q_DECLARE_PRIVATE(QEventDispatcherQPA)
+
+public:
+    explicit QEventDispatcherQPA(QObject *parent = 0);
+    QEventDispatcherQPA(EVENTDISPATCHERBASEPRIVATE &priv, QObject *parent);
+    ~QEventDispatcherQPA();
+
+    bool processEvents(QEventLoop::ProcessEventsFlags flags);
+    bool hasPendingEvents();
+
+    void flush();
+};
+
+class Q_GUI_EXPORT QEventDispatcherQPAPrivate : public EVENTDISPATCHERBASEPRIVATE
+{
+    Q_DECLARE_PUBLIC(QEventDispatcherQPA)
+public:
+    QEventDispatcherQPAPrivate();
+    ~QEventDispatcherQPAPrivate();
+};
+
+QT_END_NAMESPACE
+
+#endif // QEVENTDISPATCHER_QPA_H
diff --git a/src/platformsupport/eventdispatchers/qgenericunixeventdispatcher.cpp b/src/platformsupport/eventdispatchers/qgenericunixeventdispatcher.cpp
new file mode 100644
index 0000000000..12981c5721
--- /dev/null
+++ b/src/platformsupport/eventdispatchers/qgenericunixeventdispatcher.cpp
@@ -0,0 +1,55 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the plugins of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** GNU Lesser General Public License Usage
+** This file may be used under the terms of the GNU Lesser General Public
+** License version 2.1 as published by the Free Software Foundation and
+** appearing in the file LICENSE.LGPL included in the packaging of this
+** file. Please review the following information to ensure the GNU Lesser
+** General Public License version 2.1 requirements will be met:
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights. These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU General
+** Public License version 3.0 as published by the Free Software Foundation
+** and appearing in the file LICENSE.GPL included in the packaging of this
+** file. Please review the following information to ensure the GNU General
+** Public License version 3.0 requirements will be met:
+** http://www.gnu.org/copyleft/gpl.html.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qgenericunixeventdispatcher_p.h"
+#include "qeventdispatcher_qpa_p.h"
+#include "qeventdispatcher_glib_p.h"
+#include <qglobal.h>
+
+class QAbstractEventDispatcher *createUnixEventDispatcher()
+{
+#if !defined(QT_NO_GLIB) && !defined(Q_OS_WIN)
+    if (qgetenv("QT_NO_GLIB").isEmpty() && QEventDispatcherGlib::versionSupported())
+        return new QPAEventDispatcherGlib();
+    else
+#endif
+        return new QEventDispatcherQPA();
+}
diff --git a/src/platformsupport/eventdispatchers/qgenericunixeventdispatcher_p.h b/src/platformsupport/eventdispatchers/qgenericunixeventdispatcher_p.h
new file mode 100644
index 0000000000..d8f02a12ad
--- /dev/null
+++ b/src/platformsupport/eventdispatchers/qgenericunixeventdispatcher_p.h
@@ -0,0 +1,47 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the plugins of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** GNU Lesser General Public License Usage
+** This file may be used under the terms of the GNU Lesser General Public
+** License version 2.1 as published by the Free Software Foundation and
+** appearing in the file LICENSE.LGPL included in the packaging of this
+** file. Please review the following information to ensure the GNU Lesser
+** General Public License version 2.1 requirements will be met:
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights. These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU General
+** Public License version 3.0 as published by the Free Software Foundation
+** and appearing in the file LICENSE.GPL included in the packaging of this
+** file. Please review the following information to ensure the GNU General
+** Public License version 3.0 requirements will be met:
+** http://www.gnu.org/copyleft/gpl.html.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+class QAbstractEventDispatcher;
+#ifdef Q_OS_MAC
+Q_GUI_EXPORT QAbstractEventDispatcher* createUnixEventDispatcher();
+#else
+Q_GUI_EXPORT QAbstractEventDispatcher* createUnixEventDispatcher();
+#endif
\ No newline at end of file