diff options
| -rw-r--r-- | platform/linuxbsd/display_server_x11.cpp | 210 | ||||
| -rw-r--r-- | platform/linuxbsd/display_server_x11.h | 16 |
2 files changed, 165 insertions, 61 deletions
diff --git a/platform/linuxbsd/display_server_x11.cpp b/platform/linuxbsd/display_server_x11.cpp index e3cf992302..9fa9d57b68 100644 --- a/platform/linuxbsd/display_server_x11.cpp +++ b/platform/linuxbsd/display_server_x11.cpp @@ -322,23 +322,19 @@ bool DisplayServerX11::_refresh_device_info() { } void DisplayServerX11::_flush_mouse_motion() { - while (true) { - if (XPending(x11_display) > 0) { - XEvent event; - XPeekEvent(x11_display, &event); - - if (XGetEventData(x11_display, &event.xcookie) && event.xcookie.type == GenericEvent && event.xcookie.extension == xi.opcode) { - XIDeviceEvent *event_data = (XIDeviceEvent *)event.xcookie.data; - - if (event_data->evtype == XI_RawMotion) { - XNextEvent(x11_display, &event); - } else { - break; - } - } else { - break; + // Block events polling while flushing motion events. + MutexLock mutex_lock(events_mutex); + + for (uint32_t event_index = 0; event_index < polled_events.size(); ++event_index) { + XEvent &event = polled_events[event_index]; + if (XGetEventData(x11_display, &event.xcookie) && event.xcookie.type == GenericEvent && event.xcookie.extension == xi.opcode) { + XIDeviceEvent *event_data = (XIDeviceEvent *)event.xcookie.data; + if (event_data->evtype == XI_RawMotion) { + XFreeEventData(x11_display, &event.xcookie); + polled_events.remove(event_index--); + continue; } - } else { + XFreeEventData(x11_display, &event.xcookie); break; } } @@ -456,7 +452,15 @@ void DisplayServerX11::clipboard_set(const String &p_text) { XSetSelectionOwner(x11_display, XInternAtom(x11_display, "CLIPBOARD", 0), windows[MAIN_WINDOW_ID].x11_window, CurrentTime); } -static String _clipboard_get_impl(Atom p_source, Window x11_window, ::Display *x11_display, String p_internal_clipboard, Atom target) { +Bool DisplayServerX11::_predicate_clipboard_selection(Display *display, XEvent *event, XPointer arg) { + if (event->type == SelectionNotify && event->xselection.requestor == *(Window *)arg) { + return True; + } else { + return False; + } +} + +String DisplayServerX11::_clipboard_get_impl(Atom p_source, Window x11_window, Atom target) const { String ret; Atom type; @@ -467,20 +471,24 @@ static String _clipboard_get_impl(Atom p_source, Window x11_window, ::Display *x Window Sown = XGetSelectionOwner(x11_display, p_source); if (Sown == x11_window) { - return p_internal_clipboard; + return internal_clipboard; }; if (Sown != None) { - XConvertSelection(x11_display, p_source, target, selection, - x11_window, CurrentTime); - XFlush(x11_display); - while (true) { + { + // Block events polling while processing selection events. + MutexLock mutex_lock(events_mutex); + + XConvertSelection(x11_display, p_source, target, selection, + x11_window, CurrentTime); + + XFlush(x11_display); + + // Blocking wait for predicate to be True + // and remove the event from the queue. XEvent event; - XNextEvent(x11_display, &event); - if (event.type == SelectionNotify && event.xselection.requestor == x11_window) { - break; - }; - }; + XIfEvent(x11_display, &event, _predicate_clipboard_selection, (XPointer)&x11_window); + } // // Do not get any data, see how much data is there @@ -514,14 +522,14 @@ static String _clipboard_get_impl(Atom p_source, Window x11_window, ::Display *x return ret; } -static String _clipboard_get(Atom p_source, Window x11_window, ::Display *x11_display, String p_internal_clipboard) { +String DisplayServerX11::_clipboard_get(Atom p_source, Window x11_window) const { String ret; Atom utf8_atom = XInternAtom(x11_display, "UTF8_STRING", True); if (utf8_atom != None) { - ret = _clipboard_get_impl(p_source, x11_window, x11_display, p_internal_clipboard, utf8_atom); + ret = _clipboard_get_impl(p_source, x11_window, utf8_atom); } - if (ret == "") { - ret = _clipboard_get_impl(p_source, x11_window, x11_display, p_internal_clipboard, XA_STRING); + if (ret.empty()) { + ret = _clipboard_get_impl(p_source, x11_window, XA_STRING); } return ret; } @@ -530,11 +538,11 @@ String DisplayServerX11::clipboard_get() const { _THREAD_SAFE_METHOD_ String ret; - ret = _clipboard_get(XInternAtom(x11_display, "CLIPBOARD", 0), windows[MAIN_WINDOW_ID].x11_window, x11_display, internal_clipboard); + ret = _clipboard_get(XInternAtom(x11_display, "CLIPBOARD", 0), windows[MAIN_WINDOW_ID].x11_window); - if (ret == "") { - ret = _clipboard_get(XA_PRIMARY, windows[MAIN_WINDOW_ID].x11_window, x11_display, internal_clipboard); - }; + if (ret.empty()) { + ret = _clipboard_get(XA_PRIMARY, windows[MAIN_WINDOW_ID].x11_window); + } return ret; } @@ -1649,10 +1657,16 @@ void DisplayServerX11::window_set_ime_active(const bool p_active, WindowID p_win return; } + // Block events polling while changing input focus + // because it triggers some event polling internally. if (p_active) { - XSetICFocus(wd.xic); + { + MutexLock mutex_lock(events_mutex); + XSetICFocus(wd.xic); + } window_set_ime_position(wd.im_position, p_window); } else { + MutexLock mutex_lock(events_mutex); XUnsetICFocus(wd.xic); } } @@ -1673,7 +1687,14 @@ void DisplayServerX11::window_set_ime_position(const Point2i &p_pos, WindowID p_ spot.x = short(p_pos.x); spot.y = short(p_pos.y); XVaNestedList preedit_attr = XVaCreateNestedList(0, XNSpotLocation, &spot, nullptr); - XSetICValues(wd.xic, XNPreeditAttributes, preedit_attr, nullptr); + + { + // Block events polling during this call + // because it triggers some event polling internally. + MutexLock mutex_lock(events_mutex); + XSetICValues(wd.xic, XNPreeditAttributes, preedit_attr, nullptr); + } + XFree(preedit_attr); } @@ -1993,7 +2014,7 @@ unsigned int DisplayServerX11::_get_mouse_button_state(unsigned int p_x11_button return last_button_state; } -void DisplayServerX11::_handle_key_event(WindowID p_window, XKeyEvent *p_event, bool p_echo) { +void DisplayServerX11::_handle_key_event(WindowID p_window, XKeyEvent *p_event, LocalVector<XEvent> &p_events, uint32_t &p_event_index, bool p_echo) { WindowData wd = windows[p_window]; // X11 functions don't know what const is XKeyEvent *xkeyevent = p_event; @@ -2130,7 +2151,7 @@ void DisplayServerX11::_handle_key_event(WindowID p_window, XKeyEvent *p_event, /* Phase 4, determine if event must be filtered */ // This seems to be a side-effect of using XIM. - // XEventFilter looks like a core X11 function, + // XFilterEvent looks like a core X11 function, // but it's actually just used to see if we must // ignore a deadkey, or events XIM determines // must not reach the actual gui. @@ -2164,17 +2185,16 @@ void DisplayServerX11::_handle_key_event(WindowID p_window, XKeyEvent *p_event, // Echo characters in X11 are a keyrelease and a keypress // one after the other with the (almot) same timestamp. - // To detect them, i use XPeekEvent and check that their - // difference in time is below a threshold. + // To detect them, i compare to the next event in list and + // check that their difference in time is below a threshold. if (xkeyevent->type != KeyPress) { p_echo = false; // make sure there are events pending, // so this call won't block. - if (XPending(x11_display) > 0) { - XEvent peek_event; - XPeekEvent(x11_display, &peek_event); + if (p_event_index + 1 < p_events.size()) { + XEvent &peek_event = p_events[p_event_index + 1]; // I'm using a threshold of 5 msecs, // since sometimes there seems to be a little @@ -2189,9 +2209,9 @@ void DisplayServerX11::_handle_key_event(WindowID p_window, XKeyEvent *p_event, KeySym rk; XLookupString((XKeyEvent *)&peek_event, str, 256, &rk, nullptr); if (rk == keysym_keycode) { - XEvent event; - XNextEvent(x11_display, &event); //erase next event - _handle_key_event(p_window, (XKeyEvent *)&event, true); + // Consume to next event. + ++p_event_index; + _handle_key_event(p_window, (XKeyEvent *)&peek_event, p_events, p_event_index, true); return; //ignore current, echo next } } @@ -2358,6 +2378,56 @@ void DisplayServerX11::_send_window_event(const WindowData &wd, WindowEvent p_ev } } +void DisplayServerX11::_poll_events_thread(void *ud) { + DisplayServerX11 *display_server = (DisplayServerX11 *)ud; + display_server->_poll_events(); +} + +Bool DisplayServerX11::_predicate_all_events(Display *display, XEvent *event, XPointer arg) { + // Just accept all events. + return True; +} + +void DisplayServerX11::_poll_events() { + int x11_fd = ConnectionNumber(x11_display); + fd_set in_fds; + + while (!events_thread_done) { + XFlush(x11_display); + + FD_ZERO(&in_fds); + FD_SET(x11_fd, &in_fds); + + struct timeval tv; + tv.tv_usec = 0; + tv.tv_sec = 1; + + // Wait for next event or timeout. + int num_ready_fds = select(x11_fd + 1, &in_fds, NULL, NULL, &tv); + if (num_ready_fds < 0) { + ERR_PRINT("_poll_events: select error: " + itos(errno)); + } + + // Process events from the queue. + { + MutexLock mutex_lock(events_mutex); + + // Non-blocking wait for next event + // and remove it from the queue. + XEvent ev; + while (XCheckIfEvent(x11_display, &ev, _predicate_all_events, nullptr)) { + // Check if the input manager wants to process the event. + if (XFilterEvent(&ev, None)) { + // Event has been filtered by the Input Manager, + // it has to be ignored and a new one will be received. + continue; + } + polled_events.push_back(ev); + } + } + } +} + void DisplayServerX11::process_events() { _THREAD_SAFE_METHOD_ @@ -2401,13 +2471,16 @@ void DisplayServerX11::process_events() { xi.tilt = Vector2(); xi.pressure_supported = false; - while (XPending(x11_display) > 0) { - XEvent event; - XNextEvent(x11_display, &event); + LocalVector<XEvent> events; + { + // Block events polling while flushing events. + MutexLock mutex_lock(events_mutex); + events = polled_events; + polled_events.clear(); + } - if (XFilterEvent(&event, None)) { - continue; - } + for (uint32_t event_index = 0; event_index < events.size(); ++event_index) { + XEvent &event = events[event_index]; WindowID window_id = MAIN_WINDOW_ID; @@ -2666,6 +2739,9 @@ void DisplayServerX11::process_events() { }*/ #endif if (wd.xic) { + // Block events polling while changing input focus + // because it triggers some event polling internally. + MutexLock mutex_lock(events_mutex); XSetICFocus(wd.xic); } @@ -2715,7 +2791,10 @@ void DisplayServerX11::process_events() { xi.state.clear(); #endif if (wd.xic) { - XSetICFocus(wd.xic); + // Block events polling while changing input focus + // because it triggers some event polling internally. + MutexLock mutex_lock(events_mutex); + XUnsetICFocus(wd.xic); } } break; @@ -2834,11 +2913,11 @@ void DisplayServerX11::process_events() { break; } - if (XPending(x11_display) > 0) { - XEvent tevent; - XPeekEvent(x11_display, &tevent); - if (tevent.type == MotionNotify) { - XNextEvent(x11_display, &event); + if (event_index + 1 < events.size()) { + const XEvent &next_event = events[event_index + 1]; + if (next_event.type == MotionNotify) { + ++event_index; + event = next_event; } else { break; } @@ -2969,7 +3048,7 @@ void DisplayServerX11::process_events() { // key event is a little complex, so // it will be handled in its own function. - _handle_key_event(window_id, (XKeyEvent *)&event); + _handle_key_event(window_id, (XKeyEvent *)&event, events, event_index); } break; case SelectionRequest: { XSelectionRequestEvent *req; @@ -3424,6 +3503,10 @@ DisplayServerX11::WindowID DisplayServerX11::_create_window(WindowMode p_mode, u XChangeProperty(x11_display, wd.x11_window, xdnd_aware, XA_ATOM, 32, PropModeReplace, (unsigned char *)&xdnd_version, 1); if (xim && xim_style) { + // Block events polling while changing input focus + // because it triggers some event polling internally. + MutexLock mutex_lock(events_mutex); + wd.xic = XCreateIC(xim, XNInputStyle, xim_style, XNClientWindow, wd.x11_window, XNFocusWindow, wd.x11_window, (char *)nullptr); if (XGetICValues(wd.xic, XNFilterEvents, &im_event_mask, nullptr) != nullptr) { WARN_PRINT("XGetICValues couldn't obtain XNFilterEvents value"); @@ -3926,12 +4009,19 @@ DisplayServerX11::DisplayServerX11(const String &p_rendering_driver, WindowMode } } + events_thread = Thread::create(_poll_events_thread, this); + _update_real_mouse_position(windows[MAIN_WINDOW_ID]); r_error = OK; } DisplayServerX11::~DisplayServerX11() { + events_thread_done = true; + Thread::wait_to_finish(events_thread); + memdelete(events_thread); + events_thread = nullptr; + //destroy all windows for (Map<WindowID, WindowData>::Element *E = windows.front(); E; E = E->next()) { #ifdef VULKAN_ENABLED diff --git a/platform/linuxbsd/display_server_x11.h b/platform/linuxbsd/display_server_x11.h index e894cf515c..51af02f3cc 100644 --- a/platform/linuxbsd/display_server_x11.h +++ b/platform/linuxbsd/display_server_x11.h @@ -36,6 +36,7 @@ #include "servers/display_server.h" #include "core/input/input.h" +#include "core/local_vector.h" #include "drivers/alsa/audio_driver_alsa.h" #include "drivers/alsamidi/midi_driver_alsamidi.h" #include "drivers/pulseaudio/audio_driver_pulseaudio.h" @@ -202,7 +203,10 @@ class DisplayServerX11 : public DisplayServer { MouseMode mouse_mode; Point2i center; - void _handle_key_event(WindowID p_window, XKeyEvent *p_event, bool p_echo = false); + void _handle_key_event(WindowID p_window, XKeyEvent *p_event, LocalVector<XEvent> &p_events, uint32_t &p_event_index, bool p_echo = false); + + String _clipboard_get_impl(Atom p_source, Window x11_window, Atom target) const; + String _clipboard_get(Atom p_source, Window x11_window) const; //bool minimized; //bool window_has_focus; @@ -252,6 +256,16 @@ class DisplayServerX11 : public DisplayServer { static void _dispatch_input_events(const Ref<InputEvent> &p_event); void _dispatch_input_event(const Ref<InputEvent> &p_event); + mutable Mutex events_mutex; + Thread *events_thread = nullptr; + bool events_thread_done = false; + LocalVector<XEvent> polled_events; + static void _poll_events_thread(void *ud); + void _poll_events(); + + static Bool _predicate_all_events(Display *display, XEvent *event, XPointer arg); + static Bool _predicate_clipboard_selection(Display *display, XEvent *event, XPointer arg); + protected: void _window_changed(XEvent *event); |