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wlmaker - Roadmap

Vision: A lightweight and fast Wayland compositor, visually inspired by Window Maker, and fully theme-able and configurable.

Support for visual effects to improve usability, but not for pure show.

0.1 - MVP milestone

Features

  • [done] Support xdg_shell.

  • [done] Support layer_shell.

  • [done] Support window decoration protocol.

    • [done] Style of title bar, iconify and close buttons similar to Window Maker.
    • [done] Window menu, with basic window actions (not required to adapt to state).

  • [done] Multiple workspaces

    • [done] Navigate via keys (ctrl-window-alt-arrows, hardcoded).

  • [done] Dock, visible across workspaces.

    • [done] Style similar to Window Maker.
    • [done] With application launchers (hardcoded).

  • [done] Clip

    • [done] Display the current workspace.
    • [done] Buttons to switch between workspaces.

  • [done] Application launchers

    • [done] Display an icon.
    • [done] Display application status (starting, running).
    • [done] Configurable (in code).

  • [done] Window actions

    • [done] Move (drag via title bar, or window-alt-click)
    • [done] Resize windows, including a resize bar.
    • [done] Fullscreen windows.
    • [done] Maximize windows.
    • [done] Minimize (iconify) windows.
    • [done] Roll up (shade) windows.
    • [done] Raise window when activated.

  • [done] Visualization of iconified applications.

  • [done] Task list (window-alt-esc), cycling through windows.

  • [done] Auto-start of configured applications.

    • [done] Configurable in code.

  • [done] Verify minimal application set to run:

    • [done] Terminal: foot
    • [done] Google Chrome
    • [done] Mozilla Firefox

  • [done] Works as a X11 window, Wayland client or standalone compositor.

Internals and code organization

  • [done] git submodule for direct and critical dependencies.
  • [done] CMake as build system.
  • [done] test and doc targets.
  • [done] Published as open source.

Plan for 0.2

  • [done] Issues to fix:

    • [done] Fix out-of-sync display of server-side decoration and window content when resizing.
    • [done] Fix assertion crash when mouse is pressed, then moved to another toplevel, then released.
    • [done] Hide window border when not having server-side decoration.
    • [done] Fix issue with Chrome: Enabling "Use system title and boders" will pick a slightly small decoration.
    • [done] Fix resize issue with Chrome & Firefox: The content size and actual window size can differ, which led to jumpy resizes as get_size and request_size operations did not base on the same.
    • [not reproducible] Fix issue on resizing: When moving the mouse too quickly, focus is lost and the resizing stops.

  • [done] Experimental support for Dock Apps

    • [done] Experimental wayland protocol for Apps to declare icon surfaces.
    • [done] Surfaces will be shown in either tile container, clip or dock area, depending from where the app was started.
    • [done] Demo DockApps included (digital clock)

  • [done] Initial XWayland support

    • [done] Cover enough functionality to support xterm
    • [done] Enough functionality to support emacs in X11.
      • [done] Support for child surfaces.
      • [done] Positioning of popups
      • [done] Ensure stacking order is respected and used.
      • [done] Popups do not contribute to window extensions (no border hops)
      • [done] Cursor set appropriately.
      • [done] Set DISPLAY env variable appropriately.
      • [done] Handling of modal windows: Should have decorations, stay on top.

  • [done] Configurable keyboard map (in code or commandline arg)

  • Support xdg_shell, based on toolkit.

    • [done] XDG Popups.
    • [done] Move and Resize, compliant with asynchronous ops.
    • [done] Maximize.
    • [done] Set title.
    • [done] fullscreen.
    • [done] Fix positioning of popups.
    • [regression, not supported] show window menu.

  • [done] Support window decoration protocol, based on toolkit.

    • [done] Style of title bar, iconify and close buttons similar to Window Maker.
    • [done] No border shown when windows are not decorated (eg. chrome, firefox)

  • [done] Task List

    • [done] Listing windows, rather than views.

  • [done] Window actions, based on toolkit.

    • [done] Move ([done] drag via title bar, or [done] window-alt-click)
    • [done] Resize windows, including a resize bar.
    • [done] Fullscreen windows.
    • [done] Maximize windows.
    • [done] Roll up (shade) windows.
    • [done] Raise window when activated.

  • [done] App Launcher: Update status for wlmtk_window_t, instead of wlmaker_view_t.

Internals and code organization

  • [done] Design a toolkit and re-factor the codebase to make use of it.
    • Ensure the main features (eg. all explicit actions and features above) are tested.

Plan for 0.3

  • Bugfixes

    • Fix issue on fullscreen: The window border is kept, having the window off by 1 pixel.

  • [done] Screensaver support.

    • [done] Implement ext-session-lock-v1 protocol.
    • [done] Verify screen lock works with eg. swaylock.
    • [done] Implement timer for lock, and support zwp_idle_inhibit_manager_v1 to inhibit.

  • Configuration file support

    • Basic theme configuration (decoration style) loaded from configuration file.
    • Workspaces and backgrounds .

  • [done] Support layer_shell, based on toolkit.

    • [done] XDG Popups.

  • Multiple workspaces, based on toolkit.

    • Navigate via keys (ctrl-window-alt-arrows, hardcoded).

  • Dock, visible across workspaces, based on toolkit.

    • Keep track of subprocesses and the corresponding windows.
    • Style similar to Window Maker.
    • With application launchers (hardcoded).

  • Clip, based on toolkit.

    • Display the current workspace.
    • Buttons to switch between workspaces.

  • Application launchers, based on toolkit.

    • Display an icon.
    • Display application status (starting, running).
    • Configurable (in code).

  • Task list (window-alt-esc), cycling through windows, based on toolkit.

Pending

Features for further versions, not ordered by priority nor timeline.

  • Wayland protocol adherence.

    • Support XDG wm_capabilities and advertise the compositor features.
    • Fullscreen: Hide all other visuals when a window takes fullscreen.
    • xdg-shell: set_parent, by child wlmtk_window_t.
    • Test idle-inhibit-unstable-v1. Didn't have a tool when adding.xs
    • Add ext-idle-notify-v1 support.
    • Add xdg-activation-v1 support.
    • Add wlr-foreign-toplevel-management-unstable-v1 support.
    • Support keyboard_interactivity for wlr-layer-shell-unstable-v1.

  • XWayland support (X11 clients).

    • Proper handling of modal windows: Should be a child wlmtk_window_t to itself.
    • Permit conditional compilation of XWayland support, and enabling/disabling via flag.
    • Permit identifying the real X client, not the XWayland connection.

  • Dock Apps.

    • Attached to dock (visible across workspaces) or clip (per workspace).
    • Configurable to show permanently also in clip.
    • Drag-and-drop between clip and dock.
    • Ideally: With a Wayland protocol that permits running the dock and clip as separate binary, independent of the compositor.
    • Second Demo DockApp (julia set).

  • Visualization / icons for running apps.

    • Re-build this unsing wlmtk.
    • Show in 'iconified' area.
    • Drag-and-drop into clip or dock area.
    • Consider running this as task selector, as separate binary.

  • Support for dynamic output configurations.

    • Multiple monitors.
    • Per-monitor fractional scale.
    • Work with hot-plugged monitor, remember configurations.

  • Window attributes

    • Determine how to detect client preferences.
    • Configurable and overridable (titlebar, resizebar, buttons, ...).
    • Scaling factor per application.
    • Build and test a clear model for organic/maximized/fullscreen state switches and precedence.
    • Window menu, adapting to state (eg. no "maximize" when maximized).

  • Application support.

    • Icons retrieved and used for iconified windows. See themes.
    • Make use of XDG Desktop Entry specification.

  • XDG Complianace

    • Review and define what to support from https://specifications.freedesktop.org.
    • Autostart.
    • System Tray (potentially through a Dock App)
    • Icon Themes
    • Notifications (potentially through a Dock App)

  • Application launcher

    • Show icon from XDG desktop entry.
    • For running apps, consider showing the surface on the tile.
    • Configuration menu: Commandline, and further settings.

  • A logo and info panel.

  • Window actions

    • Send to another workspace, using menu or key combinations.
    • Configurable key combinations for basic actions (minimize, ...).
    • Window shade triggered by double-click, and animated.
    • Minimize (iconify) windows, using wlmtk.
    • Window menu.
    • Application ID (from XDG shell and/or X11).

  • Configuration file, for:

    • Application launchers of the dock.
    • Application launchers for the clip.
    • Workspace configuration.
    • Background.
    • Theme.
    • Auto-started applications.

  • Configurable keyboard map.

  • Menu, based on toolkit

    • Available as window menu in windows.
    • Available as (hardcoded) application menu.
    • Root menu.
    • Menu with submenus.
    • Window menu adapting to window state. (Eg. "Maximize" shown when not maximized, otherwise: "restore".)

  • Window placement

    • Automatic placement on a free spot.
    • Gravity to snap to and stick to borders.
    • Mouse pull to sides or corners will set window to half or quarter screen.

  • Configuration tool, similar to WPrefs.

  • Screensaver support.

    • Magic corner to lock immediately.
    • Magic corner to inhibit locking.
    • Configurable corners, timeout and visualization.
    • Stretch: Consider supporting XScreenSaver (or visualization modules).

  • Compositor features

    • Bindable hotkeys.
    • Pointer position, to support apps like wmscreen or xeyes.

  • Internationalization and solid font support

    • Move from cairo toy interface to using pango proper.
    • All text strings to be configurable and swappable.

  • Commandline flags to support:

    • icon lookup paths beyond the hardcoded defaults.

  • Reduce Technical Debt

    • Move the setenv calls for DISPLAY and WAYLAND_DISPLAY into subprocess creation, just after fork. These should not impact the parent process.

Visualization and effects

  • Animations

    • Launching applications, when starting.
    • Size changes (maximize, minimize, fullscreen).

  • Task switcher

    • Application icons or minimized surfaces to visualize applications.
    • Animations when switching focus.

  • Resizing & moving

    • Consider visualizing windows partially transparent when resizing or moving.

Dock Apps

  • Sensors.
  • Clock
  • System tray.
  • CPU load.
  • Network monitor.
  • Laptop battery status.
  • Julia set.

Build, compile, deployment

Non-Goals

  • Do not (re)create a GNUStep environment.
  • Creating a dedicated toolkit.