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Levi Neely d07362b90e wayland: Phase 32 — display_open/close/screen_count through vtable 
Add three display-lifecycle slots to WMBackend:
  display_open(name)    — open/init display connection, return Display*
                          (NULL for Wayland; compositor init side-effect)
  display_close()       — tear down display connection
  display_screen_count() — number of logical screens

x11_backend: implement with XOpenDisplay (including close-on-exec fcntl),
XCloseDisplay, ScreenCount(dpy); remove fcntl/FD_CLOEXEC from main.c.

wl_backend: implement display_open() with full wlroots headless compositor
init — wl_display_create, wlr_headless_backend_create, wlr_renderer_autocreate,
wlr_backend_start.  display_close() tears down in reverse order.
Compositor state held in a file-static struct.  Adds -DWLR_USE_UNSTABLE
to WLROOTS_CFLAGS in configure.ac.

main.c: move backend selection before display_open() (was in StartUp()),
call wm_backend->display_open() instead of XOpenDisplay(); guard all
X11-specific post-open code (visual-id, DisplayName, wXModifierInitialize)
in if(dpy != NULL).

startup.c: replace ScreenCount(dpy) with wm_backend->display_screen_count();
remove now-redundant backend-selection block (owned by main.c).

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
 		2026-03-27 22:35:54 +01:00
..
backend wayland: Phase 32 — display_open/close/screen_count through vtable 2026-03-27 22:35:54 +01:00
GNUstep.h Wayland backend abstraction: WMBackend vtable (Phases 0–30) 2026-03-27 19:20:00 +01:00
Makefile.am wayland: Phase 31 — Wayland backend skeleton (complete stub vtable) 2026-03-27 22:12:41 +01:00
Makefile.in Wayland backend abstraction: WMBackend vtable (Phases 0–30) 2026-03-27 19:20:00 +01:00
WindowMaker.h Wayland backend abstraction: WMBackend vtable (Phases 0–30) 2026-03-27 19:20:00 +01:00
actions.c Wayland backend abstraction: WMBackend vtable (Phases 0–30) 2026-03-27 19:20:00 +01:00
actions.h WindowMaker 0.96.0 upstream source 2026-03-26 15:38:49 +01:00
appicon.c Wayland backend abstraction: WMBackend vtable (Phases 0–30) 2026-03-27 19:20:00 +01:00
appicon.h Wayland backend abstraction: WMBackend vtable (Phases 0–30) 2026-03-27 19:20:00 +01:00
application.c Wayland backend abstraction: WMBackend vtable (Phases 0–30) 2026-03-27 19:20:00 +01:00
application.h WindowMaker 0.96.0 upstream source 2026-03-26 15:38:49 +01:00
appmenu.c Wayland backend abstraction: WMBackend vtable (Phases 0–30) 2026-03-27 19:20:00 +01:00
appmenu.h WindowMaker 0.96.0 upstream source 2026-03-26 15:38:49 +01:00
balloon.c Wayland backend abstraction: WMBackend vtable (Phases 0–30) 2026-03-27 19:20:00 +01:00
balloon.h WindowMaker 0.96.0 upstream source 2026-03-26 15:38:49 +01:00
client.c Wayland backend abstraction: WMBackend vtable (Phases 0–30) 2026-03-27 19:20:00 +01:00
client.h Wayland backend abstraction: WMBackend vtable (Phases 0–30) 2026-03-27 19:20:00 +01:00
colormap.c Wayland backend abstraction: WMBackend vtable (Phases 0–30) 2026-03-27 19:20:00 +01:00
colormap.h WindowMaker 0.96.0 upstream source 2026-03-26 15:38:49 +01:00
cycling.c Wayland backend abstraction: WMBackend vtable (Phases 0–30) 2026-03-27 19:20:00 +01:00
cycling.h WindowMaker 0.96.0 upstream source 2026-03-26 15:38:49 +01:00
def_pixmaps.h WindowMaker 0.96.0 upstream source 2026-03-26 15:38:49 +01:00
defaults.c Wayland backend abstraction: WMBackend vtable (Phases 0–30) 2026-03-27 19:20:00 +01:00
defaults.h WindowMaker 0.96.0 upstream source 2026-03-26 15:38:49 +01:00
dialog.c Wayland backend abstraction: WMBackend vtable (Phases 0–30) 2026-03-27 19:20:00 +01:00
dialog.h WindowMaker 0.96.0 upstream source 2026-03-26 15:38:49 +01:00
dock.c Wayland backend abstraction: WMBackend vtable (Phases 0–30) 2026-03-27 19:20:00 +01:00
dock.h WindowMaker 0.96.0 upstream source 2026-03-26 15:38:49 +01:00
dockedapp.c Wayland backend abstraction: WMBackend vtable (Phases 0–30) 2026-03-27 19:20:00 +01:00
dockedapp.h WindowMaker 0.96.0 upstream source 2026-03-26 15:38:49 +01:00
event.c Wayland backend abstraction: WMBackend vtable (Phases 0–30) 2026-03-27 19:20:00 +01:00
event.h Wayland backend abstraction: WMBackend vtable (Phases 0–30) 2026-03-27 19:20:00 +01:00
extend_pixmaps.h WindowMaker 0.96.0 upstream source 2026-03-26 15:38:49 +01:00
framewin.c Wayland backend abstraction: WMBackend vtable (Phases 0–30) 2026-03-27 19:20:00 +01:00
framewin.h WindowMaker 0.96.0 upstream source 2026-03-26 15:38:49 +01:00
geom.c Wayland backend abstraction: WMBackend vtable (Phases 0–30) 2026-03-27 19:20:00 +01:00
geom.h Wayland backend abstraction: WMBackend vtable (Phases 0–30) 2026-03-27 19:20:00 +01:00
geomview.c WindowMaker 0.96.0 upstream source 2026-03-26 15:38:49 +01:00
geomview.h WindowMaker 0.96.0 upstream source 2026-03-26 15:38:49 +01:00
icon.c Wayland backend abstraction: WMBackend vtable (Phases 0–30) 2026-03-27 19:20:00 +01:00
icon.h WindowMaker 0.96.0 upstream source 2026-03-26 15:38:49 +01:00
keybind.h WindowMaker 0.96.0 upstream source 2026-03-26 15:38:49 +01:00
main.c wayland: Phase 32 — display_open/close/screen_count through vtable 2026-03-27 22:35:54 +01:00
main.h WindowMaker 0.96.0 upstream source 2026-03-26 15:38:49 +01:00
menu.c Wayland backend abstraction: WMBackend vtable (Phases 0–30) 2026-03-27 19:20:00 +01:00
menu.h WindowMaker 0.96.0 upstream source 2026-03-26 15:38:49 +01:00
misc.c Wayland backend abstraction: WMBackend vtable (Phases 0–30) 2026-03-27 19:20:00 +01:00
misc.h WindowMaker 0.96.0 upstream source 2026-03-26 15:38:49 +01:00
monitor.c Wayland backend abstraction: WMBackend vtable (Phases 0–30) 2026-03-27 19:20:00 +01:00
monitor.h WindowMaker 0.96.0 upstream source 2026-03-26 15:38:49 +01:00
motif.c Wayland backend abstraction: WMBackend vtable (Phases 0–30) 2026-03-27 19:20:00 +01:00
motif.h WindowMaker 0.96.0 upstream source 2026-03-26 15:38:49 +01:00
moveres.c Wayland backend abstraction: WMBackend vtable (Phases 0–30) 2026-03-27 19:20:00 +01:00
osdep.h WindowMaker 0.96.0 upstream source 2026-03-26 15:38:49 +01:00
osdep_bsd.c WindowMaker 0.96.0 upstream source 2026-03-26 15:38:49 +01:00
osdep_darwin.c WindowMaker 0.96.0 upstream source 2026-03-26 15:38:49 +01:00
osdep_linux.c WindowMaker 0.96.0 upstream source 2026-03-26 15:38:49 +01:00
osdep_stub.c WindowMaker 0.96.0 upstream source 2026-03-26 15:38:49 +01:00
pixmap.c Wayland backend abstraction: WMBackend vtable (Phases 0–30) 2026-03-27 19:20:00 +01:00
pixmap.h WindowMaker 0.96.0 upstream source 2026-03-26 15:38:49 +01:00
placement.c Wayland backend abstraction: WMBackend vtable (Phases 0–30) 2026-03-27 19:20:00 +01:00
placement.h WindowMaker 0.96.0 upstream source 2026-03-26 15:38:49 +01:00
properties.c Wayland backend abstraction: WMBackend vtable (Phases 0–30) 2026-03-27 19:20:00 +01:00
properties.h Wayland backend abstraction: WMBackend vtable (Phases 0–30) 2026-03-27 19:20:00 +01:00
resources.c Wayland backend abstraction: WMBackend vtable (Phases 0–30) 2026-03-27 19:20:00 +01:00
resources.h WindowMaker 0.96.0 upstream source 2026-03-26 15:38:49 +01:00
rootmenu.c Wayland backend abstraction: WMBackend vtable (Phases 0–30) 2026-03-27 19:20:00 +01:00
rootmenu.h WindowMaker 0.96.0 upstream source 2026-03-26 15:38:49 +01:00
screen.c Wayland backend abstraction: WMBackend vtable (Phases 0–30) 2026-03-27 19:20:00 +01:00
screen.h Wayland backend abstraction: WMBackend vtable (Phases 0–30) 2026-03-27 19:20:00 +01:00
session.c Wayland backend abstraction: WMBackend vtable (Phases 0–30) 2026-03-27 19:20:00 +01:00
session.h WindowMaker 0.96.0 upstream source 2026-03-26 15:38:49 +01:00
shutdown.c Wayland backend abstraction: WMBackend vtable (Phases 0–30) 2026-03-27 19:20:00 +01:00
shutdown.h WindowMaker 0.96.0 upstream source 2026-03-26 15:38:49 +01:00
stacking.c Wayland backend abstraction: WMBackend vtable (Phases 0–30) 2026-03-27 19:20:00 +01:00
stacking.h WindowMaker 0.96.0 upstream source 2026-03-26 15:38:49 +01:00
startup.c wayland: Phase 32 — display_open/close/screen_count through vtable 2026-03-27 22:35:54 +01:00
startup.h WindowMaker 0.96.0 upstream source 2026-03-26 15:38:49 +01:00
superfluous.c Wayland backend abstraction: WMBackend vtable (Phases 0–30) 2026-03-27 19:20:00 +01:00
superfluous.h WindowMaker 0.96.0 upstream source 2026-03-26 15:38:49 +01:00
switchmenu.c Wayland backend abstraction: WMBackend vtable (Phases 0–30) 2026-03-27 19:20:00 +01:00
switchmenu.h WindowMaker 0.96.0 upstream source 2026-03-26 15:38:49 +01:00
switchpanel.c Wayland backend abstraction: WMBackend vtable (Phases 0–30) 2026-03-27 19:20:00 +01:00
switchpanel.h WindowMaker 0.96.0 upstream source 2026-03-26 15:38:49 +01:00
texture.c Wayland backend abstraction: WMBackend vtable (Phases 0–30) 2026-03-27 19:20:00 +01:00
texture.h WindowMaker 0.96.0 upstream source 2026-03-26 15:38:49 +01:00
usermenu.c Wayland backend abstraction: WMBackend vtable (Phases 0–30) 2026-03-27 19:20:00 +01:00
usermenu.h WindowMaker 0.96.0 upstream source 2026-03-26 15:38:49 +01:00
wconfig.h Wayland backend abstraction: WMBackend vtable (Phases 0–30) 2026-03-27 19:20:00 +01:00
wconfig.h.in Wayland backend abstraction: WMBackend vtable (Phases 0–30) 2026-03-27 19:20:00 +01:00
wcore.c Wayland backend abstraction: WMBackend vtable (Phases 0–30) 2026-03-27 19:20:00 +01:00
wcore.h Wayland backend abstraction: WMBackend vtable (Phases 0–30) 2026-03-27 19:20:00 +01:00
wdefaults.c Wayland backend abstraction: WMBackend vtable (Phases 0–30) 2026-03-27 19:20:00 +01:00
wdefaults.h WindowMaker 0.96.0 upstream source 2026-03-26 15:38:49 +01:00
window.c Wayland backend abstraction: WMBackend vtable (Phases 0–30) 2026-03-27 19:20:00 +01:00
window.h Wayland backend abstraction: WMBackend vtable (Phases 0–30) 2026-03-27 19:20:00 +01:00
winmenu.c Wayland backend abstraction: WMBackend vtable (Phases 0–30) 2026-03-27 19:20:00 +01:00
winmenu.h WindowMaker 0.96.0 upstream source 2026-03-26 15:38:49 +01:00
winspector.c Wayland backend abstraction: WMBackend vtable (Phases 0–30) 2026-03-27 19:20:00 +01:00
winspector.h WindowMaker 0.96.0 upstream source 2026-03-26 15:38:49 +01:00
wmspec.c Wayland backend abstraction: WMBackend vtable (Phases 0–30) 2026-03-27 19:20:00 +01:00
wmspec.h WindowMaker 0.96.0 upstream source 2026-03-26 15:38:49 +01:00
workspace.c Wayland backend abstraction: WMBackend vtable (Phases 0–30) 2026-03-27 19:20:00 +01:00
workspace.h WindowMaker 0.96.0 upstream source 2026-03-26 15:38:49 +01:00
wsmap.c Wayland backend abstraction: WMBackend vtable (Phases 0–30) 2026-03-27 19:20:00 +01:00
wsmap.h WindowMaker 0.96.0 upstream source 2026-03-26 15:38:49 +01:00
xdnd.c Wayland backend abstraction: WMBackend vtable (Phases 0–30) 2026-03-27 19:20:00 +01:00
xdnd.h WindowMaker 0.96.0 upstream source 2026-03-26 15:38:49 +01:00
xinerama.c Wayland backend abstraction: WMBackend vtable (Phases 0–30) 2026-03-27 19:20:00 +01:00
xinerama.h Wayland backend abstraction: WMBackend vtable (Phases 0–30) 2026-03-27 19:20:00 +01:00
xmodifier.c Wayland backend abstraction: WMBackend vtable (Phases 0–30) 2026-03-27 19:20:00 +01:00
xmodifier.h WindowMaker 0.96.0 upstream source 2026-03-26 15:38:49 +01:00
xutil.c Wayland backend abstraction: WMBackend vtable (Phases 0–30) 2026-03-27 19:20:00 +01:00
xutil.h WindowMaker 0.96.0 upstream source 2026-03-26 15:38:49 +01:00