forked from mirror/dwl
Line saver: LISTEN_STATIC macro
This parallels the LISTEN macro for statically allocated listeners, and it allows us to remove almost all of the global wl_listener declarations. This also fixes a bug with the axisnotify listener, which was declared with a compound literal. At block scope, these have automatic storage duration [1], so the listener was no longer valid after setup() returned. (The option to declare it static explicitly was standardized in C23, if that ever gains suckless traction.) ΔSLOC: -27 [1]: https://en.cppreference.com/w/c/language/compound_literal#Explanation
This commit is contained in:
Devin J. Pohly
Leonardo Hernández
parent
a01e402c5d
commit
33bcd2e4ca
1 changed files with 32 additions and 61 deletions
93
dwl.c
93
dwl.c
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@ -70,6 +70,7 @@
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#define END(A) ((A) + LENGTH(A))
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#define TAGMASK ((1u << tagcount) - 1)
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#define LISTEN(E, L, H) wl_signal_add((E), ((L)->notify = (H), (L)))
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#define LISTEN_STATIC(E, H) do { static struct wl_listener _l = {.notify = (H)}; wl_signal_add((E), &_l); } while (0)
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/* enums */
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enum { CurNormal, CurPressed, CurMove, CurResize }; /* cursor */
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@ -359,6 +360,7 @@ static struct wlr_xcursor_manager *cursor_mgr;
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static struct wlr_session_lock_manager_v1 *session_lock_mgr;
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static struct wlr_scene_rect *locked_bg;
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static struct wlr_session_lock_v1 *cur_lock;
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static struct wl_listener lock_listener = {.notify = locksession};
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static struct wlr_seat *seat;
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static struct wl_list keyboards;
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@ -371,34 +373,6 @@ static struct wlr_box sgeom;
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static struct wl_list mons;
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static Monitor *selmon;
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/* global event handlers */
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static struct wl_listener cursor_axis = {.notify = axisnotify};
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static struct wl_listener cursor_button = {.notify = buttonpress};
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static struct wl_listener cursor_frame = {.notify = cursorframe};
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static struct wl_listener cursor_motion = {.notify = motionrelative};
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static struct wl_listener cursor_motion_absolute = {.notify = motionabsolute};
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static struct wl_listener drag_icon_destroy = {.notify = destroydragicon};
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static struct wl_listener idle_inhibitor_create = {.notify = createidleinhibitor};
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static struct wl_listener idle_inhibitor_destroy = {.notify = destroyidleinhibitor};
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static struct wl_listener layout_change = {.notify = updatemons};
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static struct wl_listener new_input = {.notify = inputdevice};
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static struct wl_listener new_virtual_keyboard = {.notify = virtualkeyboard};
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static struct wl_listener new_output = {.notify = createmon};
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static struct wl_listener new_xdg_surface = {.notify = createnotify};
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static struct wl_listener new_xdg_decoration = {.notify = createdecoration};
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static struct wl_listener new_layer_shell_surface = {.notify = createlayersurface};
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static struct wl_listener output_mgr_apply = {.notify = outputmgrapply};
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static struct wl_listener output_mgr_test = {.notify = outputmgrtest};
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static struct wl_listener request_activate = {.notify = urgent};
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static struct wl_listener request_cursor = {.notify = setcursor};
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static struct wl_listener request_gamma = {.notify = setgamma};
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static struct wl_listener request_set_psel = {.notify = setpsel};
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static struct wl_listener request_set_sel = {.notify = setsel};
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static struct wl_listener request_start_drag = {.notify = requeststartdrag};
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static struct wl_listener start_drag = {.notify = startdrag};
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static struct wl_listener session_lock_create_lock = {.notify = locksession};
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static struct wl_listener session_lock_mgr_destroy = {.notify = destroysessionmgr};
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#ifdef XWAYLAND
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static void activatex11(struct wl_listener *listener, void *data);
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static void associatex11(struct wl_listener *listener, void *data);
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@ -408,8 +382,6 @@ static void dissociatex11(struct wl_listener *listener, void *data);
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static Atom getatom(xcb_connection_t *xc, const char *name);
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static void sethints(struct wl_listener *listener, void *data);
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static void xwaylandready(struct wl_listener *listener, void *data);
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static struct wl_listener new_xwayland_surface = {.notify = createnotifyx11};
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static struct wl_listener xwayland_ready = {.notify = xwaylandready};
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static struct wlr_xwayland *xwayland;
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static Atom netatom[NetLast];
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#endif
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@ -794,7 +766,7 @@ void
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createidleinhibitor(struct wl_listener *listener, void *data)
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{
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struct wlr_idle_inhibitor_v1 *idle_inhibitor = data;
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wl_signal_add(&idle_inhibitor->events.destroy, &idle_inhibitor_destroy);
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LISTEN_STATIC(&idle_inhibitor->events.destroy, destroyidleinhibitor);
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checkidleinhibitor(NULL);
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}
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@ -1185,8 +1157,8 @@ destroysessionlock(struct wl_listener *listener, void *data)
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void
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destroysessionmgr(struct wl_listener *listener, void *data)
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{
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wl_list_remove(&session_lock_create_lock.link);
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wl_list_remove(&session_lock_mgr_destroy.link);
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wl_list_remove(&lock_listener.link);
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wl_list_remove(&listener->link);
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}
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Monitor *
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@ -2224,21 +2196,21 @@ setup(void)
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/* Initializes the interface used to implement urgency hints */
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activation = wlr_xdg_activation_v1_create(dpy);
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wl_signal_add(&activation->events.request_activate, &request_activate);
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LISTEN_STATIC(&activation->events.request_activate, urgent);
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gamma_control_mgr = wlr_gamma_control_manager_v1_create(dpy);
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wl_signal_add(&gamma_control_mgr->events.set_gamma, &request_gamma);
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LISTEN_STATIC(&gamma_control_mgr->events.set_gamma, setgamma);
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/* Creates an output layout, which a wlroots utility for working with an
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* arrangement of screens in a physical layout. */
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output_layout = wlr_output_layout_create();
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wl_signal_add(&output_layout->events.change, &layout_change);
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LISTEN_STATIC(&output_layout->events.change, updatemons);
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wlr_xdg_output_manager_v1_create(dpy, output_layout);
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/* Configure a listener to be notified when new outputs are available on the
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* backend. */
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wl_list_init(&mons);
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wl_signal_add(&backend->events.new_output, &new_output);
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LISTEN_STATIC(&backend->events.new_output, createmon);
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/* Set up our client lists and the xdg-shell. The xdg-shell is a
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* Wayland protocol which is used for application windows. For more
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@ -2252,17 +2224,17 @@ setup(void)
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idle_notifier = wlr_idle_notifier_v1_create(dpy);
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idle_inhibit_mgr = wlr_idle_inhibit_v1_create(dpy);
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wl_signal_add(&idle_inhibit_mgr->events.new_inhibitor, &idle_inhibitor_create);
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LISTEN_STATIC(&idle_inhibit_mgr->events.new_inhibitor, createidleinhibitor);
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layer_shell = wlr_layer_shell_v1_create(dpy, 3);
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wl_signal_add(&layer_shell->events.new_surface, &new_layer_shell_surface);
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LISTEN_STATIC(&layer_shell->events.new_surface, createlayersurface);
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xdg_shell = wlr_xdg_shell_create(dpy, 4);
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wl_signal_add(&xdg_shell->events.new_surface, &new_xdg_surface);
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LISTEN_STATIC(&xdg_shell->events.new_surface, createnotify);
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session_lock_mgr = wlr_session_lock_manager_v1_create(dpy);
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wl_signal_add(&session_lock_mgr->events.new_lock, &session_lock_create_lock);
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wl_signal_add(&session_lock_mgr->events.destroy, &session_lock_mgr_destroy);
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wl_signal_add(&session_lock_mgr->events.new_lock, &lock_listener);
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LISTEN_STATIC(&session_lock_mgr->events.destroy, destroysessionmgr);
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locked_bg = wlr_scene_rect_create(layers[LyrBlock], sgeom.width, sgeom.height,
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(float [4]){0.1, 0.1, 0.1, 1.0});
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wlr_scene_node_set_enabled(&locked_bg->node, 0);
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@ -2272,7 +2244,7 @@ setup(void)
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wlr_server_decoration_manager_create(dpy),
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WLR_SERVER_DECORATION_MANAGER_MODE_SERVER);
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xdg_decoration_mgr = wlr_xdg_decoration_manager_v1_create(dpy);
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wl_signal_add(&xdg_decoration_mgr->events.new_toplevel_decoration, &new_xdg_decoration);
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LISTEN_STATIC(&xdg_decoration_mgr->events.new_toplevel_decoration, createdecoration);
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/*
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* Creates a cursor, which is a wlroots utility for tracking the cursor
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@ -2300,11 +2272,11 @@ setup(void)
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*
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* And more comments are sprinkled throughout the notify functions above.
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*/
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wl_signal_add(&cursor->events.motion, &cursor_motion);
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wl_signal_add(&cursor->events.motion_absolute, &cursor_motion_absolute);
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wl_signal_add(&cursor->events.button, &cursor_button);
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wl_signal_add(&cursor->events.axis, &cursor_axis);
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wl_signal_add(&cursor->events.frame, &cursor_frame);
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LISTEN_STATIC(&cursor->events.motion, motionrelative);
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LISTEN_STATIC(&cursor->events.motion_absolute, motionabsolute);
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LISTEN_STATIC(&cursor->events.button, buttonpress);
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LISTEN_STATIC(&cursor->events.axis, axisnotify);
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LISTEN_STATIC(&cursor->events.frame, cursorframe);
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/*
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* Configures a seat, which is a single "seat" at which a user sits and
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@ -2313,20 +2285,19 @@ setup(void)
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* let us know when new input devices are available on the backend.
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*/
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wl_list_init(&keyboards);
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wl_signal_add(&backend->events.new_input, &new_input);
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LISTEN_STATIC(&backend->events.new_input, inputdevice);
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virtual_keyboard_mgr = wlr_virtual_keyboard_manager_v1_create(dpy);
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wl_signal_add(&virtual_keyboard_mgr->events.new_virtual_keyboard,
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&new_virtual_keyboard);
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LISTEN_STATIC(&virtual_keyboard_mgr->events.new_virtual_keyboard, virtualkeyboard);
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seat = wlr_seat_create(dpy, "seat0");
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wl_signal_add(&seat->events.request_set_cursor, &request_cursor);
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wl_signal_add(&seat->events.request_set_selection, &request_set_sel);
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wl_signal_add(&seat->events.request_set_primary_selection, &request_set_psel);
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wl_signal_add(&seat->events.request_start_drag, &request_start_drag);
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wl_signal_add(&seat->events.start_drag, &start_drag);
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LISTEN_STATIC(&seat->events.request_set_cursor, setcursor);
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LISTEN_STATIC(&seat->events.request_set_selection, setsel);
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LISTEN_STATIC(&seat->events.request_set_primary_selection, setpsel);
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LISTEN_STATIC(&seat->events.request_start_drag, requeststartdrag);
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LISTEN_STATIC(&seat->events.start_drag, startdrag);
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output_mgr = wlr_output_manager_v1_create(dpy);
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wl_signal_add(&output_mgr->events.apply, &output_mgr_apply);
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wl_signal_add(&output_mgr->events.test, &output_mgr_test);
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LISTEN_STATIC(&output_mgr->events.apply, outputmgrapply);
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LISTEN_STATIC(&output_mgr->events.test, outputmgrtest);
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wlr_scene_set_presentation(scene, wlr_presentation_create(dpy, backend));
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@ -2337,8 +2308,8 @@ setup(void)
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*/
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xwayland = wlr_xwayland_create(dpy, compositor, 1);
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if (xwayland) {
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wl_signal_add(&xwayland->events.ready, &xwayland_ready);
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wl_signal_add(&xwayland->events.new_surface, &new_xwayland_surface);
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LISTEN_STATIC(&xwayland->events.ready, xwaylandready);
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LISTEN_STATIC(&xwayland->events.new_surface, createnotifyx11);
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setenv("DISPLAY", xwayland->display_name, 1);
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} else {
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@ -2392,7 +2363,7 @@ startdrag(struct wl_listener *listener, void *data)
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icon = drag->icon->data = wlr_scene_drag_icon_create(&scene->tree, drag->icon);
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wlr_scene_node_place_below(&icon->node, &layers[LyrBlock]->node);
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motionnotify(0);
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wl_signal_add(&drag->icon->events.destroy, &drag_icon_destroy);
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LISTEN_STATIC(&drag->icon->events.destroy, destroydragicon);
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}
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void
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