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| ****************************************************************************/ |
| #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 |