diff options
Diffstat (limited to 'src/plugins/platforms/xcb/qxcbconnection_basic.h')
| -rw-r--r-- | src/plugins/platforms/xcb/qxcbconnection_basic.h | 181 |
1 files changed, 181 insertions, 0 deletions
diff --git a/src/plugins/platforms/xcb/qxcbconnection_basic.h b/src/plugins/platforms/xcb/qxcbconnection_basic.h new file mode 100644 index 0000000000..1bd4310562 --- /dev/null +++ b/src/plugins/platforms/xcb/qxcbconnection_basic.h @@ -0,0 +1,181 @@ +/**************************************************************************** +** +** 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 QXCBBASICCONNECTION_H +#define QXCBBASICCONNECTION_H + +#include "qxcbatom.h" +#include "qxcbexport.h" + +#include <QtCore/QPair> +#include <QtCore/QObject> +#include <QtCore/QByteArray> +#include <QtCore/QLoggingCategory> +#include <QtGui/private/qtguiglobal_p.h> + +#include <xcb/xcb.h> + +#include <memory> + +QT_BEGIN_NAMESPACE + +Q_DECLARE_LOGGING_CATEGORY(lcQpaXcb) + +class Q_XCB_EXPORT QXcbBasicConnection : public QObject +{ + Q_OBJECT +public: + QXcbBasicConnection(const char *displayName); + ~QXcbBasicConnection(); + +#if QT_CONFIG(xcb_xlib) + void *xlib_display() const { return m_xlibDisplay; } +#endif + const char *displayName() const { return m_displayName.constData(); } + int primaryScreenNumber() const { return m_primaryScreenNumber; } + xcb_connection_t *xcb_connection() const { return m_xcbConnection; } + bool isConnected() const { + return m_xcbConnection && !xcb_connection_has_error(m_xcbConnection); + } + const xcb_setup_t *setup() const { return m_setup; } + + size_t maxRequestDataBytes(size_t requestSize) const; + + inline xcb_atom_t atom(QXcbAtom::Atom qatom) const { return m_xcbAtom.atom(qatom); } + QXcbAtom::Atom qatom(xcb_atom_t atom) const { return m_xcbAtom.qatom(atom); } + xcb_atom_t internAtom(const char *name); + QByteArray atomName(xcb_atom_t atom); + + bool hasXFixes() const { return m_hasXFixes; } + bool hasXShape() const { return m_hasXhape; } + bool hasXRandr() const { return m_hasXRandr; } + bool hasInputShape() const { return m_hasInputShape; } + bool hasXKB() const { return m_hasXkb; } + bool hasXRender(int major = -1, int minor = -1) const { + if (m_hasXRender && major != -1 && minor != -1) + return m_xrenderVersion >= qMakePair(major, minor); + + return m_hasXRender; + } + bool hasXInput2() const { return m_xi2Enabled; } + bool hasShm() const { return m_hasShm; } + bool hasShmFd() const { return m_hasShmFd; } + bool hasXSync() const { return m_hasXSync; } + bool hasXinerama() const { return m_hasXinerama; } + bool hasBigRequest() const; + +#if QT_CONFIG(xcb_xinput) + bool isAtLeastXI21() const { return m_xi2Enabled && m_xi2Minor >= 1; } + bool isAtLeastXI22() const { return m_xi2Enabled && m_xi2Minor >= 2; } + bool isXIEvent(xcb_generic_event_t *event) const; + bool isXIType(xcb_generic_event_t *event, uint16_t type) const; +#endif + + bool isXFixesType(uint responseType, int eventType) const; + bool isXRandrType(uint responseType, int eventType) const; + bool isXkbType(uint responseType) const; // https://bugs.freedesktop.org/show_bug.cgi?id=51295 + +protected: + void initializeShm(); + void initializeXFixes(); + void initializeXRender(); + void initializeXRandr(); + void initializeXinerama(); + void initializeXShape(); + void initializeXKB(); + void initializeXSync(); +#if QT_CONFIG(xcb_xinput) + void initializeXInput2(); +#endif + +private: +#if QT_CONFIG(xcb_xlib) + void *m_xlibDisplay = nullptr; +#endif + QByteArray m_displayName; + xcb_connection_t *m_xcbConnection = nullptr; + int m_primaryScreenNumber = 0; + const xcb_setup_t *m_setup = nullptr; + QXcbAtom m_xcbAtom; + + bool m_hasXFixes = false; + bool m_hasXinerama = false; + bool m_hasXhape = false; + bool m_hasInputShape; + bool m_hasXRandr = false; + bool m_hasXkb = false; + bool m_hasXRender = false; + bool m_hasShm = false; + bool m_hasShmFd = false; + bool m_hasXSync = false; + + QPair<int, int> m_xrenderVersion; + + bool m_xi2Enabled = false; +#if QT_CONFIG(xcb_xinput) + int m_xi2Minor = -1; + int m_xiOpCode = -1; + uint32_t m_xinputFirstEvent = 0; +#endif + + uint32_t m_xfixesFirstEvent = 0; + uint32_t m_xrandrFirstEvent = 0; + uint32_t m_xkbFirstEvent = 0; + + uint32_t m_maximumRequestLength = 0; +}; + +#define Q_XCB_REPLY_CONNECTION_ARG(connection, ...) connection + +struct QStdFreeDeleter { + void operator()(void *p) const noexcept { return std::free(p); } +}; + +#define Q_XCB_REPLY(call, ...) \ + std::unique_ptr<call##_reply_t, QStdFreeDeleter>( \ + call##_reply(Q_XCB_REPLY_CONNECTION_ARG(__VA_ARGS__), call(__VA_ARGS__), nullptr) \ + ) + +#define Q_XCB_REPLY_UNCHECKED(call, ...) \ + std::unique_ptr<call##_reply_t, QStdFreeDeleter>( \ + call##_reply(Q_XCB_REPLY_CONNECTION_ARG(__VA_ARGS__), call##_unchecked(__VA_ARGS__), nullptr) \ + ) + +QT_END_NAMESPACE + +#endif // QXCBBASICCONNECTION_H |