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XWayland stability, GPU rendering, and multi-cursor Phase 2
The bulk of a multi-session shift's real work landed in crates/wayland.
Full root-cause/verification narrative for every item below lives in
docs/TODO.md (each has its own dated entry); this is the summary:
Desktop shell:
- Real desktop icons v2 (state/desktop_icons.rs, desktop_icons.rs):
fixed origin-baked-before-the-bar-connects, fixed-icon sort order, and
a proper Rename/Delete-to-Trash menu (window_memory.rs backs the
rename-persistence side). Rubber-band marquee multi-select.
- icon_theme.rs: real freedesktop icon-theme lookup (inherits chain,
hicolor fallback) rendering actual theme SVGs via resvg/tiny-skia,
replacing the hand-drawn placeholder glyphs.
- Context/desktop menus (decoration.rs, desktop_menu.rs, state/menu.rs)
rebuilt to match the project's own AGS panel styling: rounded floating
panel, tinted-fill row highlight, real separators, a much fuller
titlebar window-menu action set.
Layer-shell / multi-monitor:
- Layer-shell hit-testing and render positioning (input/pointer.rs,
udev/render.rs's element placement) now correctly convert LayerMap's
logical geometry into physical pixels on a fractionally-scaled output
- root cause of a bottom-anchored dock being unclickable and
unpainted while a top-anchored bar on the same output worked.
udev/outputs.rs's relayout_outputs gained the same physical/logical
split for cross-output positioning, now backed by a real unit test
(next_logical_x) built from the original measured incident numbers.
- state/geometry.rs: a window's border/decoration no longer briefly
clips when moved between differently-scaled monitors mid-drag.
XWayland / stability:
- xwayland.rs, udev/session.rs, udev/platform.rs: fixed a 100%-
reproducible cold-start XKEYBOARD crash-loop (XWayland's own stdin
inherited a real, already-owned VT; env passthrough and idle-callback
spawn timing were both real, independent gaps) that had silently taken
down all X11-app support and the global-menu registrar every session.
- state/toplevel.rs, state/lifecycle.rs: XWayland dialog detection via
WM_TRANSIENT_FOR, not just a native xdg_toplevel parent.
Rendering:
- udev/render.rs, decoration.rs: real GPU (GBM+EGL+DrmCompositor)
window-content and cursor rendering on the udev backend, falling back
to the untouched Pixman path automatically on any init failure.
- decoration/tests.rs, state/mod.rs: rounded-corner/border fixes for
interactive resize lag and cross-monitor moves.
Multi-cursor Phase 2 (virtual_pointer.rs, new; state/mod.rs, udev/
platform.rs, winit/nested_platform.rs): pins a zwlr_virtual_pointer_
unstable_v1 object to a specific window, bypassing the shared seat/
focus/pointer_pos path entirely via hand-rolled wl_pointer.enter/motion/
button/frame/leave against every WlPointer the target client has bound
(PointerHandle::client_pointers). Lets an agent operate one window while
a human uses another, genuinely simultaneously, with zero client
cooperation and no second wl_seat (confirmed a dead end: real clients
only ever bind the first seat advertised).
Full workspace build/test/clippy clean.
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Pure reorganization, no behavior change - verified by diffing the
function-name and struct-name sets before/after (both identical) plus
a full cargo test pass. Struct definitions (Card, DrmBuffer, UdevHead,
UdevState) and their small impls stay in mod.rs, since default (crate-
scoped) privacy there is visible to every descendant submodule without
further changes. The rest splits by concern:
- render.rs: the per-frame impl CompState block (render_udev_frame and
the gamma/output-power methods) - still one ~520-line function,
left intact rather than decomposed, given how much of its structure
(the self.udev.as_mut() disjoint-borrow pattern threaded through it)
is deliberate and already documented inline.
- outputs.rs: hotplug reprobe/relayout (impl CompState).
- platform.rs: UdevPlatform's struct/connect logic and its `impl
Platform for UdevPlatform`, previously split apart in the flat file
by ~250 lines of unrelated DRM/session code sitting between them.
- drm.rs: mode/CRTC/framebuffer probing and setup.
- session.rs: libseat/libinput/udev-monitor calloop registration and
the libinput event handler.
A few free functions and one struct (ConnectorProbe, bring_up_head,
probe_connected, pick_crtc, the register_* functions) went from
module-private to pub(crate): called across what are now sibling
submodules, which - unlike a defining module's own descendants --
Rust's privacy model doesn't let see each other's private items.
Matches this crate's existing pub(crate) convention rather than
introducing pub(super), which crates/core's manager/ split used
instead to match *that* crate's plain-private convention.
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