1. Agenda

• Short overviews of rewritten subsystems, with Q&A:

  • Render nodes (Benjamin)
  • Inspector recorder tab (Benjamin)
  • Size allocation (Timm)

  • Gadget -> Widget (Timm)

  • GdkPixbuf -> GdkTexture (Benjamin)

  • GdkScreen, root window removal (Matthias)

  • GdkDeviceManager -> GdkSeat (Matthias)

  • Clipboard handling (Benjamin)
  • Event handling in GTK+ (Carlos)
  • GDK in general(?) (Benjamin) (see section below)

• Review the roadmap

• Collect ideas for good 4.0 demos
• GSK
  • OpenGL and OpenGL ES renderers state
    • Working unit tests possible?
• GDK
  • Waylandification
  • simplification
  • Turning everything into real objects with properties and signals
  • refcounting
  • multiple displays, temporary displays
  • survival of display going down, reconnecting to respawned compositor, app suspend
• Layout
  • Updates on Emeus
  • Layout manager
• Animations

• GtkToplevel / GtkWindow splitup

  • do we want it?
  • scope
  • how to handle popovers, menus, tooltips
  • GTK_WINDOW_POPUP ?
  • embedding widgets
• Glade / Builder / Designer

• GskCompiler

  • Vulkan?
  • wip/otte/shader, wip/matthiasc/shadertoy
  • css integration
  • worth it?

• GtkWidget snapshot plans

  • caching of render nodes
  • handling of queue_draw()

  • expose what API of GskRenderNode

  • allow manual creation of render nodes?
• Open questions:
  • Do we drop gdkthreads.h and give up on thread-safety for good ?
  • Minimum requirements on display servers and compositors
    • Can we assume XFIXES ?
    • Do we want to require certain Wayland protocol versions / extensions ? Eg the stable xdg-shell protocol
  • Do we drop module-ness for input modules ?

  • How to drop gtk_widget_draw as well as GtkWidgeClass::draw wrt. DND icons

  • queue_resize inside size-allocate is still an unsolved problem.
  • Should we remove all 2.x / 3.x since markers from the docs for 4.0 ?

  • Focus widgets need some more work; Focus chains in GtkWidget yes/no? How to handle focus(visible) e.g. for buttons in listbox rows?

• Sketch future plans for
  • text view
  • gl area
  • listbox / flowbox
• gitlab migration
  • when?
  • split repos for gtk2/3/4?
• sunsetting of gtk2
  • announce a deeper maintenance mode (crash-fix only) around the time we release gtk4 ?
  • ask people to move
• GLib
  • Anything which people want to get upstream into GLib

  • glib-2-56 blockers

  • glib-2-58 planning — what big features do we want?
    • Meson
    • gitlab migration and more CI
  • Finalisation of objects from the thread which created them
  • Closing old bugs
  • Maintainership situation, especially for less-well-understood things like GIO streams, GSettings, dconf
  • Tests and testing policy
  • Icon vs Image