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https://github.com/gnif/LookingGlass.git
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[client] wayland: dispatch events through libdecor when using it
Currently, we dispatch the events on the wayland display server ourselves. This is fine when using the cairo backend of libdecor, as it does the same thign we do, but other backends may require other things to be dispatched. This commit lets libdecor dispatch events instead through libdecor_get_fd and libdecor_dispatch, which should hopefully makes things less sketchy.
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@ -18,7 +18,7 @@ if (ENABLE_LIBDECOR)
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list(APPEND DISPLAYSERVER_Wayland_PKGCONFIG_LIBRARIES ${DISPLAYSERVER_Wayland_LIBDECOR_LIBRARIES})
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list(APPEND DISPLAYSERVER_Wayland_PKGCONFIG_INCLUDE_DIRS ${DISPLAYSERVER_Wayland_LIBDECOR_INCLUDE_DIRS})
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list(APPEND displayserver_Wayland_SHELL_SRC shell_libdecor.c)
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add_definitions(-D ENABLE_LIBDECOR)
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add_compile_definitions(ENABLE_LIBDECOR)
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else()
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list(APPEND displayserver_Wayland_SHELL_SRC shell_xdg.c)
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endif()
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@ -30,8 +30,13 @@
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#include "common/debug.h"
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#include "common/locking.h"
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#ifdef ENABLE_LIBDECOR
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#include <libdecor.h>
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#endif
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#define EPOLL_EVENTS 10 // Maximum number of fds we can process at once in waylandWait
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#ifndef ENABLE_LIBDECOR
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static void waylandDisplayCallback(uint32_t events, void * opaque)
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{
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if (events & EPOLLERR)
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@ -40,6 +45,7 @@ static void waylandDisplayCallback(uint32_t events, void * opaque)
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wl_display_read_events(wlWm.display);
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wl_display_dispatch_pending(wlWm.display);
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}
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#endif
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bool waylandPollInit(void)
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{
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@ -55,21 +61,27 @@ bool waylandPollInit(void)
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LG_LOCK_INIT(wlWm.pollLock);
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LG_LOCK_INIT(wlWm.pollFreeLock);
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#ifndef ENABLE_LIBDECOR
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wlWm.displayFd = wl_display_get_fd(wlWm.display);
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if (!waylandPollRegister(wlWm.displayFd, waylandDisplayCallback, NULL, EPOLLIN))
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{
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DEBUG_ERROR("Failed register display to epoll: %s", strerror(errno));
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return false;
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}
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#endif
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return true;
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}
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void waylandWait(unsigned int time)
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{
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#ifdef ENABLE_LIBDECOR
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libdecor_dispatch(wlWm.libdecor, 0);
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#else
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while (wl_display_prepare_read(wlWm.display))
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wl_display_dispatch_pending(wlWm.display);
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wl_display_flush(wlWm.display);
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#endif
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struct epoll_event events[EPOLL_EVENTS];
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int count;
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@ -77,21 +89,29 @@ void waylandWait(unsigned int time)
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{
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if (errno != EINTR)
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DEBUG_INFO("epoll failed: %s", strerror(errno));
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#ifndef ENABLE_LIBDECOR
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wl_display_cancel_read(wlWm.display);
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#endif
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return;
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}
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#ifndef ENABLE_LIBDECOR
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bool sawDisplay = false;
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#endif
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for (int i = 0; i < count; ++i) {
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struct WaylandPoll * poll = events[i].data.ptr;
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if (!poll->removed)
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poll->callback(events[i].events, poll->opaque);
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#ifndef ENABLE_LIBDECOR
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if (poll->fd == wlWm.displayFd)
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sawDisplay = true;
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#endif
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}
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#ifndef ENABLE_LIBDECOR
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if (!sawDisplay)
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wl_display_cancel_read(wlWm.display);
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#endif
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INTERLOCKED_SECTION(wlWm.pollFreeLock,
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{
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@ -20,8 +20,10 @@
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#include "wayland.h"
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#include <errno.h>
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#include <stdbool.h>
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#include <string.h>
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#include <sys/epoll.h>
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#include <libdecor.h>
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#include <wayland-client.h>
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@ -94,6 +96,11 @@ static struct libdecor_frame_interface libdecorFrameListener = {
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};
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#pragma GCC diagnostic pop
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static void libdecorCallback(uint32_t events, void * opaque)
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{
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libdecor_dispatch(wlWm.libdecor, 0);
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}
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bool waylandShellInit(const char * title, bool fullscreen, bool maximize, bool borderless)
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{
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wlWm.libdecor = libdecor_new(wlWm.display, &libdecorListener);
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@ -104,8 +111,13 @@ bool waylandShellInit(const char * title, bool fullscreen, bool maximize, bool b
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libdecor_frame_map(wlWm.libdecorFrame);
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while (!wlWm.configured)
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wl_display_roundtrip(wlWm.display);
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libdecor_dispatch(wlWm.libdecor, 0);
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if (!waylandPollRegister(libdecor_get_fd(wlWm.libdecor), libdecorCallback, NULL, EPOLLIN))
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{
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DEBUG_ERROR("Failed register display to epoll: %s", strerror(errno));
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return false;
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}
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return true;
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}
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