Initial import from the monolithic Qt.

This is the beginning of revision history for this module. If you
want to look at revision history older than this, please refer to the
Qt Git wiki for how to use Git history grafting. At the time of
writing, this wiki is located here:

http://qt.gitorious.org/qt/pages/GitIntroductionWithQt

If you have already performed the grafting and you don't see any
history beyond this commit, try running "git log" with the "--follow"
argument.

Branched from the monolithic repo, Qt master branch, at commit
896db169ea224deb96c59ce8af800d019de63f12

1 files changed, 331 insertions, 0 deletions

diff --git a/src/plugins/platforms/xcb/qxcbconnection.h b/src/plugins/platforms/xcb/qxcbconnection.h
new file mode 100644
index 0000000000..6b5f81047d
--- /dev/null
+++ b/src/plugins/platforms/xcb/qxcbconnection.h
@@ -0,0 +1,331 @@
+/****************************************************************************
+**
+** 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.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, 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.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QXCBCONNECTION_H
+#define QXCBCONNECTION_H
+
+#include <xcb/xcb.h>
+
+#include <QList>
+#include <QObject>
+#include <QVector>
+
+#define Q_XCB_DEBUG
+
+class QXcbScreen;
+
+namespace QXcbAtom {
+    enum Atom {
+        // window-manager <-> client protocols
+        WM_PROTOCOLS,
+        WM_DELETE_WINDOW,
+        WM_TAKE_FOCUS,
+        _NET_WM_PING,
+        _NET_WM_CONTEXT_HELP,
+        _NET_WM_SYNC_REQUEST,
+        _NET_WM_SYNC_REQUEST_COUNTER,
+
+        // ICCCM window state
+        WM_STATE,
+        WM_CHANGE_STATE,
+
+        // Session management
+        WM_CLIENT_LEADER,
+        WM_WINDOW_ROLE,
+        SM_CLIENT_ID,
+
+        // Clipboard
+        CLIPBOARD,
+        INCR,
+        TARGETS,
+        MULTIPLE,
+        TIMESTAMP,
+        SAVE_TARGETS,
+        CLIP_TEMPORARY,
+        _QT_SELECTION,
+        _QT_CLIPBOARD_SENTINEL,
+        _QT_SELECTION_SENTINEL,
+        CLIPBOARD_MANAGER,
+
+        RESOURCE_MANAGER,
+
+        _XSETROOT_ID,
+
+        _QT_SCROLL_DONE,
+        _QT_INPUT_ENCODING,
+
+        _MOTIF_WM_HINTS,
+
+        DTWM_IS_RUNNING,
+        ENLIGHTENMENT_DESKTOP,
+        _DT_SAVE_MODE,
+        _SGI_DESKS_MANAGER,
+
+        // EWMH (aka NETWM)
+        _NET_SUPPORTED,
+        _NET_VIRTUAL_ROOTS,
+        _NET_WORKAREA,
+
+        _NET_MOVERESIZE_WINDOW,
+        _NET_WM_MOVERESIZE,
+
+        _NET_WM_NAME,
+        _NET_WM_ICON_NAME,
+        _NET_WM_ICON,
+
+        _NET_WM_PID,
+
+        _NET_WM_WINDOW_OPACITY,
+
+        _NET_WM_STATE,
+        _NET_WM_STATE_ABOVE,
+        _NET_WM_STATE_BELOW,
+        _NET_WM_STATE_FULLSCREEN,
+        _NET_WM_STATE_MAXIMIZED_HORZ,
+        _NET_WM_STATE_MAXIMIZED_VERT,
+        _NET_WM_STATE_MODAL,
+        _NET_WM_STATE_STAYS_ON_TOP,
+        _NET_WM_STATE_DEMANDS_ATTENTION,
+
+        _NET_WM_USER_TIME,
+        _NET_WM_USER_TIME_WINDOW,
+        _NET_WM_FULL_PLACEMENT,
+
+        _NET_WM_WINDOW_TYPE,
+        _NET_WM_WINDOW_TYPE_DESKTOP,
+        _NET_WM_WINDOW_TYPE_DOCK,
+        _NET_WM_WINDOW_TYPE_TOOLBAR,
+        _NET_WM_WINDOW_TYPE_MENU,
+        _NET_WM_WINDOW_TYPE_UTILITY,
+        _NET_WM_WINDOW_TYPE_SPLASH,
+        _NET_WM_WINDOW_TYPE_DIALOG,
+        _NET_WM_WINDOW_TYPE_DROPDOWN_MENU,
+        _NET_WM_WINDOW_TYPE_POPUP_MENU,
+        _NET_WM_WINDOW_TYPE_TOOLTIP,
+        _NET_WM_WINDOW_TYPE_NOTIFICATION,
+        _NET_WM_WINDOW_TYPE_COMBO,
+        _NET_WM_WINDOW_TYPE_DND,
+        _NET_WM_WINDOW_TYPE_NORMAL,
+        _KDE_NET_WM_WINDOW_TYPE_OVERRIDE,
+
+        _KDE_NET_WM_FRAME_STRUT,
+
+        _NET_STARTUP_INFO,
+        _NET_STARTUP_INFO_BEGIN,
+
+        _NET_SUPPORTING_WM_CHECK,
+
+        _NET_WM_CM_S0,
+
+        _NET_SYSTEM_TRAY_VISUAL,
+
+        _NET_ACTIVE_WINDOW,
+
+        // Property formats
+        COMPOUND_TEXT,
+        TEXT,
+        UTF8_STRING,
+
+        // Xdnd
+        XdndEnter,
+        XdndPosition,
+        XdndStatus,
+        XdndLeave,
+        XdndDrop,
+        XdndFinished,
+        XdndTypelist,
+        XdndActionList,
+
+        XdndSelection,
+
+        XdndAware,
+        XdndProxy,
+
+        XdndActionCopy,
+        XdndActionLink,
+        XdndActionMove,
+        XdndActionPrivate,
+
+        // Motif DND
+        _MOTIF_DRAG_AND_DROP_MESSAGE,
+        _MOTIF_DRAG_INITIATOR_INFO,
+        _MOTIF_DRAG_RECEIVER_INFO,
+        _MOTIF_DRAG_WINDOW,
+        _MOTIF_DRAG_TARGETS,
+
+        XmTRANSFER_SUCCESS,
+        XmTRANSFER_FAILURE,
+
+        // Xkb
+        _XKB_RULES_NAMES,
+
+        // XEMBED
+        _XEMBED,
+        _XEMBED_INFO,
+
+        XWacomStylus,
+        XWacomCursor,
+        XWacomEraser,
+
+        XTabletStylus,
+        XTabletEraser,
+
+        NPredefinedAtoms,
+
+        _QT_SETTINGS_TIMESTAMP = NPredefinedAtoms,
+        NAtoms
+    };
+}
+
+class QXcbKeyboard;
+
+class QXcbConnection : public QObject
+{
+    Q_OBJECT
+public:
+    QXcbConnection(const char *displayName = 0);
+    ~QXcbConnection();
+
+    QXcbConnection *connection() const { return const_cast<QXcbConnection *>(this); }
+
+    QList<QXcbScreen *> screens() const { return m_screens; }
+    int primaryScreen() const { return m_primaryScreen; }
+
+    xcb_atom_t atom(QXcbAtom::Atom atom);
+
+    const char *displayName() const { return m_displayName.constData(); }
+
+    xcb_connection_t *xcb_connection() const { return m_connection; }
+
+    QXcbKeyboard *keyboard() const { return m_keyboard; }
+
+#ifdef XCB_USE_XLIB
+    void *xlib_display() const { return m_xlib_display; }
+#endif
+
+#ifdef XCB_USE_DRI2
+    bool hasSupportForDri2() const;
+    QByteArray dri2DeviceName() const { return m_dri2_device_name; }
+#endif
+#ifdef XCB_USE_EGL
+    bool hasEgl() const;
+#endif
+#if defined(XCB_USE_EGL) || defined(XCB_USE_DRI2)
+    void *egl_display() const { return m_egl_display; }
+#endif
+
+    void sync();
+    void handleXcbError(xcb_generic_error_t *error);
+
+private slots:
+    void processXcbEvents();
+
+private:
+    void initializeAllAtoms();
+    void sendConnectionEvent(QXcbAtom::Atom atom, uint id = 0);
+#ifdef XCB_USE_DRI2
+    void initializeDri2();
+#endif
+
+    xcb_connection_t *m_connection;
+    const xcb_setup_t *m_setup;
+
+    QList<QXcbScreen *> m_screens;
+    int m_primaryScreen;
+
+    xcb_atom_t m_allAtoms[QXcbAtom::NAtoms];
+
+    QByteArray m_displayName;
+
+    QXcbKeyboard *m_keyboard;
+
+#if defined(XCB_USE_XLIB)
+    void *m_xlib_display;
+#endif
+
+#ifdef XCB_USE_DRI2
+    uint32_t m_dri2_major;
+    uint32_t m_dri2_minor;
+    bool m_dri2_support_probed;
+    bool m_has_support_for_dri2;
+    QByteArray m_dri2_device_name;
+#endif
+#if defined(XCB_USE_EGL) || defined(XCB_USE_DRI2)
+    void *m_egl_display;
+    bool m_has_egl;
+#endif
+#ifdef Q_XCB_DEBUG
+    struct CallInfo {
+        int sequence;
+        QByteArray file;
+        int line;
+    };
+    QVector<CallInfo> m_callLog;
+    void log(const char *file, int line, int sequence);
+    template <typename cookie_t>
+    friend cookie_t q_xcb_call_template(const cookie_t &cookie, QXcbConnection *connection, const char *file, int line);
+#endif
+};
+
+#define DISPLAY_FROM_XCB(object) ((Display *)(object->connection()->xlib_display()))
+
+#ifdef Q_XCB_DEBUG
+template <typename cookie_t>
+cookie_t q_xcb_call_template(const cookie_t &cookie, QXcbConnection *connection, const char *file, int line)
+{
+    connection->log(file, line, cookie.sequence);
+    return cookie;
+}
+#define Q_XCB_CALL(x) q_xcb_call_template(x, connection(), __FILE__, __LINE__)
+#define Q_XCB_CALL2(x, connection) q_xcb_call_template(x, connection, __FILE__, __LINE__)
+#define Q_XCB_NOOP(c) q_xcb_call_template(xcb_no_operation(c->xcb_connection()), c, __FILE__, __LINE__);
+#else
+#define Q_XCB_CALL(x) x
+#define Q_XCB_CALL2(x, connection) x
+#define Q_XCB_NOOP(c)
+#endif
+
+
+#if defined(XCB_USE_DRI2) || defined(XCB_USE_EGL)
+#define EGL_DISPLAY_FROM_XCB(object) ((EGLDisplay)(object->connection()->egl_display()))
+#endif //endifXCB_USE_DRI2
+
+#endif