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39 | |
40 | #ifndef QXCBDRAG_H |
41 | #define QXCBDRAG_H |
42 | |
43 | #include <qpa/qplatformdrag.h> |
44 | #include <private/qsimpledrag_p.h> |
45 | #include <qxcbobject.h> |
46 | #include <xcb/xcb.h> |
47 | #include <qpoint.h> |
48 | #include <qrect.h> |
49 | #include <qsharedpointer.h> |
50 | #include <qpointer.h> |
51 | #include <qvector.h> |
52 | #include <qdatetime.h> |
53 | #include <qpixmap.h> |
54 | #include <qbackingstore.h> |
55 | |
56 | #include <QtCore/QDebug> |
57 | |
58 | QT_REQUIRE_CONFIG(draganddrop); |
59 | |
60 | QT_BEGIN_NAMESPACE |
61 | |
62 | class QWindow; |
63 | class QPlatformWindow; |
64 | class QXcbConnection; |
65 | class QXcbWindow; |
66 | class QXcbDropData; |
67 | class QXcbScreen; |
68 | class QDrag; |
69 | class QShapedPixmapWindow; |
70 | |
71 | class QXcbDrag : public QXcbObject, public QBasicDrag, public QXcbWindowEventListener |
72 | { |
73 | public: |
74 | QXcbDrag(QXcbConnection *c); |
75 | ~QXcbDrag(); |
76 | |
77 | bool eventFilter(QObject *o, QEvent *e) override; |
78 | |
79 | void startDrag() override; |
80 | void cancel() override; |
81 | void move(const QPoint &globalPos, Qt::MouseButtons b, Qt::KeyboardModifiers mods) override; |
82 | void drop(const QPoint &globalPos, Qt::MouseButtons b, Qt::KeyboardModifiers mods) override; |
83 | void endDrag() override; |
84 | |
85 | Qt::DropAction defaultAction(Qt::DropActions possibleActions, Qt::KeyboardModifiers modifiers) const override; |
86 | |
87 | void handlePropertyNotifyEvent(const xcb_property_notify_event_t *event) override; |
88 | |
89 | void handleEnter(QPlatformWindow *window, const xcb_client_message_event_t *event, xcb_window_t proxy = 0); |
90 | void handlePosition(QPlatformWindow *w, const xcb_client_message_event_t *event); |
91 | void handleLeave(QPlatformWindow *w, const xcb_client_message_event_t *event); |
92 | void handleDrop(QPlatformWindow *, const xcb_client_message_event_t *event, |
93 | Qt::MouseButtons b = { }, Qt::KeyboardModifiers mods = { }); |
94 | |
95 | void handleStatus(const xcb_client_message_event_t *event); |
96 | void handleSelectionRequest(const xcb_selection_request_event_t *event); |
97 | void handleFinished(const xcb_client_message_event_t *event); |
98 | |
99 | bool dndEnable(QXcbWindow *win, bool on); |
100 | bool ownsDragObject() const override; |
101 | |
102 | void updatePixmap(); |
103 | xcb_timestamp_t targetTime() { return target_time; } |
104 | |
105 | protected: |
106 | void timerEvent(QTimerEvent* e) override; |
107 | |
108 | bool findXdndAwareTarget(const QPoint &globalPos, xcb_window_t *target_out); |
109 | |
110 | private: |
111 | friend class QXcbDropData; |
112 | |
113 | void init(); |
114 | |
115 | void handle_xdnd_position(QPlatformWindow *w, const xcb_client_message_event_t *event, |
116 | Qt::MouseButtons b = { }, Qt::KeyboardModifiers mods = { }); |
117 | void handle_xdnd_status(const xcb_client_message_event_t *event); |
118 | void send_leave(); |
119 | |
120 | Qt::DropAction toDropAction(xcb_atom_t atom) const; |
121 | Qt::DropActions toDropActions(const QVector<xcb_atom_t> &atoms) const; |
122 | xcb_atom_t toXdndAction(Qt::DropAction a) const; |
123 | |
124 | void readActionList(); |
125 | void setActionList(Qt::DropAction requestedAction, Qt::DropActions supportedActions); |
126 | void startListeningForActionListChanges(); |
127 | void stopListeningForActionListChanges(); |
128 | |
129 | QPointer<QWindow> initiatorWindow; |
130 | QPointer<QWindow> currentWindow; |
131 | QPoint currentPosition; |
132 | |
133 | QXcbDropData *m_dropData; |
134 | Qt::DropAction accepted_drop_action; |
135 | |
136 | QWindow *desktop_proxy; |
137 | |
138 | xcb_atom_t xdnd_dragsource; |
139 | |
140 | // the types in this drop. 100 is no good, but at least it's big. |
141 | enum { xdnd_max_type = 100 }; |
142 | QVector<xcb_atom_t> xdnd_types; |
143 | |
144 | // timestamp from XdndPosition and XdndDroptime for retrieving the data |
145 | xcb_timestamp_t target_time; |
146 | xcb_timestamp_t source_time; |
147 | |
148 | // rectangle in which the answer will be the same |
149 | QRect source_sameanswer; |
150 | bool waiting_for_status; |
151 | |
152 | // helpers for setting executed drop action outside application |
153 | bool dropped; |
154 | bool canceled; |
155 | |
156 | // A window from Unity DnD Manager, which does not respect the XDnD spec |
157 | xcb_window_t xdndCollectionWindow = XCB_NONE; |
158 | |
159 | // top-level window we sent position to last. |
160 | xcb_window_t current_target; |
161 | // window to send events to (always valid if current_target) |
162 | xcb_window_t current_proxy_target; |
163 | |
164 | QXcbVirtualDesktop *current_virtual_desktop; |
165 | |
166 | // 10 minute timer used to discard old XdndDrop transactions |
167 | enum { XdndDropTransactionTimeout = 600000 }; |
168 | int cleanup_timer; |
169 | |
170 | QVector<xcb_atom_t> drag_types; |
171 | |
172 | QVector<xcb_atom_t> current_actions; |
173 | QVector<xcb_atom_t> drop_actions; |
174 | |
175 | struct Transaction |
176 | { |
177 | xcb_timestamp_t timestamp; |
178 | xcb_window_t target; |
179 | xcb_window_t proxy_target; |
180 | QPlatformWindow *targetWindow; |
181 | // QWidget *embedding_widget; |
182 | QPointer<QDrag> drag; |
183 | QTime time; |
184 | }; |
185 | friend class QTypeInfo<Transaction>; |
186 | QVector<Transaction> transactions; |
187 | |
188 | int transaction_expiry_timer; |
189 | void restartDropExpiryTimer(); |
190 | int findTransactionByWindow(xcb_window_t window); |
191 | int findTransactionByTime(xcb_timestamp_t timestamp); |
192 | xcb_window_t findRealWindow(const QPoint & pos, xcb_window_t w, int md, bool ignoreNonXdndAwareWindows); |
193 | }; |
194 | Q_DECLARE_TYPEINFO(QXcbDrag::Transaction, Q_MOVABLE_TYPE); |
195 | |
196 | QT_END_NAMESPACE |
197 | |
198 | #endif |
199 | |