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39 | #ifndef QXCBBASICCONNECTION_H |
40 | #define QXCBBASICCONNECTION_H |
41 | |
42 | #include "qxcbatom.h" |
43 | #include "qxcbexport.h" |
44 | |
45 | #include <QtCore/QPair> |
46 | #include <QtCore/QObject> |
47 | #include <QtCore/QByteArray> |
48 | #include <QtCore/QLoggingCategory> |
49 | #include <QtGui/private/qtguiglobal_p.h> |
50 | |
51 | #include <xcb/xcb.h> |
52 | |
53 | #include <memory> |
54 | |
55 | QT_BEGIN_NAMESPACE |
56 | |
57 | Q_DECLARE_LOGGING_CATEGORY(lcQpaXcb) |
58 | |
59 | class Q_XCB_EXPORT QXcbBasicConnection : public QObject |
60 | { |
61 | Q_OBJECT |
62 | public: |
63 | QXcbBasicConnection(const char *displayName); |
64 | ~QXcbBasicConnection(); |
65 | |
66 | #if QT_CONFIG(xcb_xlib) |
67 | void *xlib_display() const { return m_xlibDisplay; } |
68 | #endif |
69 | const char *displayName() const { return m_displayName.constData(); } |
70 | int primaryScreenNumber() const { return m_primaryScreenNumber; } |
71 | xcb_connection_t *xcb_connection() const { return m_xcbConnection; } |
72 | bool isConnected() const { |
73 | return m_xcbConnection && !xcb_connection_has_error(c: m_xcbConnection); |
74 | } |
75 | const xcb_setup_t *setup() const { return m_setup; } |
76 | |
77 | size_t maxRequestDataBytes(size_t requestSize) const; |
78 | |
79 | inline xcb_atom_t atom(QXcbAtom::Atom qatom) const { return m_xcbAtom.atom(atom: qatom); } |
80 | QXcbAtom::Atom qatom(xcb_atom_t atom) const { return m_xcbAtom.qatom(atom); } |
81 | xcb_atom_t internAtom(const char *name); |
82 | QByteArray atomName(xcb_atom_t atom); |
83 | |
84 | bool hasXFixes() const { return m_hasXFixes; } |
85 | bool hasXShape() const { return m_hasXhape; } |
86 | bool hasXRandr() const { return m_hasXRandr; } |
87 | bool hasInputShape() const { return m_hasInputShape; } |
88 | bool hasXKB() const { return m_hasXkb; } |
89 | bool hasXRender(int major = -1, int minor = -1) const { |
90 | if (m_hasXRender && major != -1 && minor != -1) |
91 | return m_xrenderVersion >= qMakePair(x: major, y: minor); |
92 | |
93 | return m_hasXRender; |
94 | } |
95 | bool hasXInput2() const { return m_xi2Enabled; } |
96 | bool hasShm() const { return m_hasShm; } |
97 | bool hasShmFd() const { return m_hasShmFd; } |
98 | bool hasXSync() const { return m_hasXSync; } |
99 | bool hasXinerama() const { return m_hasXinerama; } |
100 | bool hasBigRequest() const; |
101 | |
102 | bool isAtLeastXI21() const { return m_xi2Enabled && m_xi2Minor >= 1; } |
103 | bool isAtLeastXI22() const { return m_xi2Enabled && m_xi2Minor >= 2; } |
104 | bool isXIEvent(xcb_generic_event_t *event) const; |
105 | bool isXIType(xcb_generic_event_t *event, uint16_t type) const; |
106 | |
107 | bool isXFixesType(uint responseType, int eventType) const; |
108 | bool isXRandrType(uint responseType, int eventType) const; |
109 | bool isXkbType(uint responseType) const; // https://bugs.freedesktop.org/show_bug.cgi?id=51295 |
110 | |
111 | protected: |
112 | void initializeShm(); |
113 | void initializeXFixes(); |
114 | void initializeXRender(); |
115 | void initializeXRandr(); |
116 | void initializeXinerama(); |
117 | void initializeXShape(); |
118 | void initializeXKB(); |
119 | void initializeXSync(); |
120 | void initializeXInput2(); |
121 | |
122 | private: |
123 | #if QT_CONFIG(xcb_xlib) |
124 | void *m_xlibDisplay = nullptr; |
125 | #endif |
126 | QByteArray m_displayName; |
127 | xcb_connection_t *m_xcbConnection = nullptr; |
128 | int m_primaryScreenNumber = 0; |
129 | const xcb_setup_t *m_setup = nullptr; |
130 | QXcbAtom m_xcbAtom; |
131 | |
132 | bool m_hasXFixes = false; |
133 | bool m_hasXinerama = false; |
134 | bool m_hasXhape = false; |
135 | bool m_hasInputShape; |
136 | bool m_hasXRandr = false; |
137 | bool m_hasXkb = false; |
138 | bool m_hasXRender = false; |
139 | bool m_hasShm = false; |
140 | bool m_hasShmFd = false; |
141 | bool m_hasXSync = false; |
142 | |
143 | QPair<int, int> m_xrenderVersion; |
144 | |
145 | bool m_xi2Enabled = false; |
146 | int m_xi2Minor = -1; |
147 | int m_xiOpCode = -1; |
148 | uint32_t m_xinputFirstEvent = 0; |
149 | |
150 | uint32_t m_xfixesFirstEvent = 0; |
151 | uint32_t m_xrandrFirstEvent = 0; |
152 | uint32_t m_xkbFirstEvent = 0; |
153 | |
154 | uint32_t m_maximumRequestLength = 0; |
155 | }; |
156 | |
157 | #define Q_XCB_REPLY_CONNECTION_ARG(connection, ...) connection |
158 | |
159 | struct QStdFreeDeleter { |
160 | void operator()(void *p) const noexcept { return std::free(ptr: p); } |
161 | }; |
162 | |
163 | #define Q_XCB_REPLY(call, ...) \ |
164 | std::unique_ptr<call##_reply_t, QStdFreeDeleter>( \ |
165 | call##_reply(Q_XCB_REPLY_CONNECTION_ARG(__VA_ARGS__), call(__VA_ARGS__), nullptr) \ |
166 | ) |
167 | |
168 | #define Q_XCB_REPLY_UNCHECKED(call, ...) \ |
169 | std::unique_ptr<call##_reply_t, QStdFreeDeleter>( \ |
170 | call##_reply(Q_XCB_REPLY_CONNECTION_ARG(__VA_ARGS__), call##_unchecked(__VA_ARGS__), nullptr) \ |
171 | ) |
172 | |
173 | QT_END_NAMESPACE |
174 | |
175 | #endif // QXCBBASICCONNECTION_H |
176 | |