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Author SHA1 Message Date
Levi Neely 1dde83e05e wayland: Phase 29 — pixman SHM surface primitives 
Add wm_shm_surface: a compositor-owned pixel buffer that bridges pixman
software rendering to the wlroots scene graph.

The struct embeds a wlr_buffer (wl_container_of compatible) so wlroots
can reference-count and GPU-upload the pixel data on demand via the
wlr_buffer_impl vtable (begin_data_ptr_access / end_data_ptr_access /
destroy).  A pixman_image_t wrapping the same malloc memory provides the
drawing API.

Four entry points:
  wm_shm_surface_create  — alloc + wlr_buffer_init + pixman_image_create
  wm_shm_surface_fill    — pixman_image_composite32(PIXMAN_OP_SRC, ...)
  wm_shm_surface_commit  — wlr_scene_buffer_create / set_position
  wm_shm_surface_destroy — scene node + wlr_buffer_drop (async free)

A 64×64 steel-blue (0xFF4080C0) test surface is committed to the root
scene node at (16,16) inside wl_screen_create_internals, proving the
pixman → wlr_scene_buffer upload pipeline works end-to-end.

Build fixes:
  - Add pixman-1 to PKG_CHECK_MODULES in configure.ac so -lpixman-1
    appears in WLROOTS_LIBS (linker was missing the symbol).
  - Add -I$(srcdir)/backend/wayland to AM_CPPFLAGS in Makefile.am so
    generated Wayland protocol headers are found during compilation.

Smoke test: PASS (all existing checks continue to pass; Phase 29 log
line "Phase 29 test surface committed" confirms the pipeline fires).

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
 2026-03-31 13:31:06 +02:00
Levi Neely a486329b52 Wayland backend abstraction: WMBackend vtable (Phases 0–30) 
Introduce a display-system-agnostic WMBackend vtable that routes all
display operations through function pointers, making the WM policy
layer independent of X11.  The X11 implementation is preserved in
src/backend/x11/ and behaviour is unchanged.

Key structural changes
──────────────────────
• src/backend/backend_types.h — backend-neutral type definitions:
    WNativeWindow, WKeyCode, WContextKey, WBackendScreen,
    WBackendEvent (+typed fields), WNormalHints, WWMHints,
    WNETWindowType, WHeadGeometry, WClientAttributes, WClientVisual,
    WSegment, WPoint, WM_KEY_* keysym constants, WA_* atom IDs,
    WKB_GROUP*_INDEX, WCUR_NONE

• src/backend/backend.h — WMBackend vtable (~100 function-pointer
    slots) covering: frame/context lifecycle, stacking, focus, grabs,
    pointer, keyboard, overlays, properties, ICCCM, EWMH/NETWM,
    monitors, screen setup, cursors, extensions, error handlers.
    No <X11/> headers remain in this file after Phase 30.

• src/backend/x11/ — X11 backend implementation:
    x11_backend.c  full vtable; all display calls confined here
    x11_props.c    WM_NORMAL_HINTS / WM_HINTS translation
    x11_event.c    XEvent → WBackendEvent translation
    x11_monitor.c  Xinerama / RandR monitor query

Policy files cleaned
────────────────────
All 47 files in WM_POLICY_CLEAN_FILES pass check-no-x11-policy
(no direct #include <X11/> anywhere).  X11 types that still appear
in policy structs (Visual*, Colormap, Window, Atom …) arrive only
transitively via WINGs.h; the vtable boundary itself is X11-free.

Tests
─────
• tests/smoke-test.sh — full Xvfb lifecycle test (PASS)
• tests/test_geom.c   — geometry / constraint unit tests
• tests/test_x11_event.c — WBackendEvent field extraction tests

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
 2026-03-27 19:20:00 +01:00
Levi Neely fcee811b99 WindowMaker 0.96.0 upstream source 2026-03-26 15:38:49 +01:00