⚓ Anchor

🤖 This entire project — every line of Rust, every algorithm, every bug fix — was written by xbot, an autonomous AI coding agent.

No human has written, edited, or even reviewed a single line of source code in this repository. From the initial cargo init to the 7,000+ lines of compositor logic, from GPU auto-detection to the lock screen's PAM authentication — it's all AI.

100% AI. 0% human code. This is what an AI agent can build when given a real systems programming challenge.

• 🪟 4 Layout Presets — MasterStack, Columns, Center, Grid. Per-workspace layout. Super+Space to cycle.
• 🖥️ 9 Workspaces — Super+1 through Super+9. Move windows with Super+Shift+1-9.
• 📟 Scratchpad Terminal — `Super+`` toggles a quake-style dropdown terminal overlay.
• 🚀 Built-in App Launcher — Super+D opens a searchable app menu from XDG .desktop files.
• 🔒 Lock Screen — Super+Esc locks with 5 randomized animated styles. PAM password authentication.
• 📸 Screenshot — Super+P captures via GPU framebuffer, area selection overlay, clipboard support.
• 🔔 Notifications — DBus toast overlay (org.freedesktop.Notifications) with fade animations.
• 🎨 Wallpapers — Gradient, solid color, or image. Cycle with Super+W.
• 🖼️ Fullscreen — Super+F per-window fullscreen.
• ⌨️ XWayland — Full X11 app support (Feishu, Chrome, Edge, etc.). Input method popups work.
• 📐 Window Rules — Auto-assign apps to workspaces and layouts via config.toml.
• 🎯 Cross-GPU — Auto-detects NVIDIA / AMD / Intel, sets appropriate environment variables.
• ✨ Window Animations — Smooth workspace switch slide (200ms ease-out cubic).
• 🔤 Input Method — fcitx5 / ibus integration. Configurable via config.

• libseat / logind for session management
• OpenGL ES 3.x (via GPU driver)
• A terminal emulator (default: foot)
• Input method (optional): fcitx5 or ibus
• libpam for lock screen authentication

cargo build --release --bin anchor

sudo cp scripts/anchor.desktop /usr/share/wayland-sessions/

The anchor-session wrapper auto-detects:

• GPU type (NVIDIA/AMD/Intel) and sets appropriate env vars
• Project directory via dirname — no hardcoded paths
• Input method from config.toml (fcitx/ibus/none)

Copy config.toml to ~/.config/anchor/config.toml or edit in project root.

kill $(pgrep -f "target/release/anchor")
# DM will auto-restart the session

[colors]
background = "#0d0d1a"
focus_border = "#7aa2f7"
unfocus_border = "#24253a"

[bar]
enabled = true
height = 48

[layout]
border_width = 4
gap = 14
margin = 6

[terminal]
command = "foot"

[input_method]
method = "fcitx"  # "fcitx", "ibus", or "none"

[gpu]
vendor = "auto"    # "auto" | "nvidia" | "amd" | "intel"
device = ""        # "/dev/dri/card1" or empty for auto

[[window_rule]]
app_id = "firefox"
workspace = 1
layout = "master-stack"

[[window_rule]]
app_id = "code"
workspace = 2
layout = "columns"

10-step layered pipeline, rendered via GlesRenderer (GPU OpenGL ES):

Step 1:   Wallpaper         (gradient / solid / image texture)
Step 2:   Window content    (all elements, single draw call)
Step 2.5: IM popup          (Wayland input method)
Step 3:   Window decorations (border lines, focused/unfocused)
Step 4:   Scratchpad        (opaque overlay + border + content)
Step 4.5: X11 OR windows    (input method popups, tooltips)
Step 5:   Headbar           (workspace indicators, clock, date, CPU/MEM)
Step 6:   Notifications     (toast overlay)
Step 7:   App launcher      (search + list)
Step 8:   Cursor
Step 9:   Screenshot area selection overlay
Step 10:  Screenshot capture (framebuffer copy)

src/
  main.rs           — Compositor loop, App struct, keyboard/mouse handling, GPU auto-detect
  workspace.rs      — Workspace struct, WindowSlot enum, unified render order
  lock.rs           — Lock screen state machine (PAM auth, shake animation, random styles)
  launcher.rs       — Built-in app launcher (XDG .desktop scanning, search filter)
  scratchpad.rs     — Quake-style dropdown terminal state machine
  xwayland.rs       — XWayland support (X11 app compatibility)
  config.rs         — TOML config parsing (includes GPU config section)
  text_render.rs    — fontdue-based TTF text rendering
  auth.rs           — PAM authentication via FFI
  wallpaper.rs      — Wallpaper loading and caching
  cursor.rs         — XCursor theme loading and rendering
  notify.rs         — DBus notification listener
  screenshot.rs     — Screenshot capture (area selection, DRM framebuffer dump)
  block_linear.rs   — Block-linear memory layout helpers (NVIDIA)
  layout/
    geom.rs         — Layout geometry (presets, split direction, slot calculation)
    decorations.rs  — Window border decorations
    headbar.rs      — Top bar (workspace indicators, clock, date, CPU/MEM)
    wallpaper.rs    — Wallpaper rendering (gradient grid, animated glow spots)
    notifications.rs — Toast notification rendering
    launcher.rs     — Launcher overlay rendering
    lock_screen.rs  — Lock screen rendering (5 animated styles + dim overlay)
scripts/
  anchor-session    — DM session wrapper (auto-detects GPU, sets env vars)
  anchor-launcher   — App launcher script (fallback)

GPU selection priority: TITAN_GPU env var → config.toml device → vendor preference + auto-detect → first available card.

• No layer-shell — External overlays (wmenu, waybar) won't work. Built-in alternatives provided.
• No xdg-decoration protocol — CSD must be disabled in terminal config (e.g., foot.ini).
• NVIDIA block-linear — Minor pixel distortion at sub-pixel scales (AMD/Intel unaffected).

MIT