xcb: qxcbconnection_basic

A basic base class that creates a connection and initializes
extensions. The goal was to reduce the size of qxcbconnection.h/cpp.

Made QXcbAtom into a class that handles atom initialization and
exposes the relevant APIs. Before this patch, all of that logic
was inside of qxcbconnection.h/cpp.

Change-Id: Ia893c3b31e2343dfbe62fe2aa6bfd0017abf46ea
Reviewed-by: Gatis Paeglis <gatis.paeglis@qt.io>

1 files changed, 267 insertions, 0 deletions

diff --git a/src/plugins/platforms/xcb/qxcbatom.h b/src/plugins/platforms/xcb/qxcbatom.h
new file mode 100644
index 0000000000..b6cc159035
--- /dev/null
+++ b/src/plugins/platforms/xcb/qxcbatom.h
@@ -0,0 +1,267 @@
+/****************************************************************************
+**
+** Copyright (C) 2018 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the QtCore module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+#ifndef QXCBATOM_H
+#define QXCBATOM_H
+
+#include <xcb/xcb.h>
+
+class QXcbAtom
+{
+public:
+    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,
+        MANAGER, // System tray notification
+        _NET_SYSTEM_TRAY_OPCODE, // System tray operation
+
+        // ICCCM window state
+        WM_STATE,
+        WM_CHANGE_STATE,
+        WM_CLASS,
+        WM_NAME,
+
+        // Session management
+        WM_CLIENT_LEADER,
+        WM_WINDOW_ROLE,
+        SM_CLIENT_ID,
+        WM_CLIENT_MACHINE,
+
+        // 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,
+
+        // Qt/XCB specific
+        _QT_CLOSE_CONNECTION,
+
+        _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_FRAME_EXTENTS,
+
+        _NET_STARTUP_INFO,
+        _NET_STARTUP_INFO_BEGIN,
+
+        _NET_SUPPORTING_WM_CHECK,
+
+        _NET_WM_CM_S0,
+
+        _NET_SYSTEM_TRAY_VISUAL,
+
+        _NET_ACTIVE_WINDOW,
+
+        // Property formats
+        TEXT,
+        UTF8_STRING,
+        CARDINAL,
+
+        // 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,
+
+        // XInput2
+        ButtonLeft,
+        ButtonMiddle,
+        ButtonRight,
+        ButtonWheelUp,
+        ButtonWheelDown,
+        ButtonHorizWheelLeft,
+        ButtonHorizWheelRight,
+        AbsMTPositionX,
+        AbsMTPositionY,
+        AbsMTTouchMajor,
+        AbsMTTouchMinor,
+        AbsMTOrientation,
+        AbsMTPressure,
+        AbsMTTrackingID,
+        MaxContacts,
+        RelX,
+        RelY,
+        // XInput2 tablet
+        AbsX,
+        AbsY,
+        AbsPressure,
+        AbsTiltX,
+        AbsTiltY,
+        AbsWheel,
+        AbsDistance,
+        WacomSerialIDs,
+        INTEGER,
+        RelHorizWheel,
+        RelVertWheel,
+        RelHorizScroll,
+        RelVertScroll,
+
+        _XSETTINGS_SETTINGS,
+
+        _COMPIZ_DECOR_PENDING,
+        _COMPIZ_DECOR_REQUEST,
+        _COMPIZ_DECOR_DELETE_PIXMAP,
+        _COMPIZ_TOOLKIT_ACTION,
+        _GTK_LOAD_ICONTHEMES,
+
+        AT_SPI_BUS,
+
+        EDID,
+        EDID_DATA,
+        XFree86_DDC_EDID1_RAWDATA,
+
+        NAtoms
+    };
+
+    QXcbAtom();
+    void initialize(xcb_connection_t *connection);
+
+    inline xcb_atom_t atom(QXcbAtom::Atom atom) const { return m_allAtoms[atom]; }
+    QXcbAtom::Atom qatom(xcb_atom_t atom) const;
+
+protected:
+    void initializeAllAtoms(xcb_connection_t *connection);
+
+private:
+    xcb_atom_t m_allAtoms[QXcbAtom::NAtoms];
+};
+
+#endif // QXCBATOM_H