KWin/Wayland Development

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Compositor configuration interfaces

  • Output configuration low-level via outputmanagement Wayland interface and high-level via libkscreen
  • Input devices low-level via KWin Dbus service
  • Night Color low-level via KWin Dbus service and high-level via libcolorcorrect

Security

  • Virtual Keyboard need to be somehow controlled by KWin to ensure that no input can be injected
  • Screenshots need to be restricted to KWin. Solution: move KSnapshot to KWin, remove D-Bus interface for Screenshots
  • Global Shortcut handling needs to be moved to KWin. Easy with kglobalaccel being moved to KWin, but what about non-KDE applications?

Random stuff

  • Need Video Buffer support, Phonon devs? Requires complete new coding path in compositor.
  • Usage of overlays (looking into the scene graph, selecting e.g. RGB overlay)
  • Input redirection (useful e.g. Present Windows, thumbnails)
  • event to window when it switches the screen (what about screen overlapping windows?)
  • screen management might need to move to KWin
  • one framebuffer per screen (requires changes in the compositor rendering path, could be handled in the OpenGL backend?)
  • XWayland allows us to have TFP from a Wayland buffer instead needing the XComposite. That might be very handy to go to Wayland fast. We can talk to X as we used to be. Normal KWin::Client will do, just needs different TFP path. Might cause some deadlock as KWin would be a client of X and X a client to KWin
  • PID available thanks to socket, makes killing hung Clients rather simple

This page was last edited on 12 April 2018, at 12:44. Content is available under Creative Commons License SA 4.0 unless otherwise noted.