Remove TODO

These TODO items are outdated (either done or not applicable anymore). Let's
migrate items that we want to keep to GitLab issues.

Signed-off-by: Simon Ser <contact@emersion.fr>

TODO

@@ -1,146 +0,0 @@
-Core wayland protocol
-
- - Maybe try to make remote wayland actually happen, to see if there
-   is something in the protocol/architecture that makes it harder than
-   it should be.
-
-ICCCM
-
- - mime-type guidelines for data_source (ie, both dnd and selection):
-   recommended types for text or images, types that a clipboard
-   manager must support, mime-types must be listed in preferred order
-
- - we need a "no kb focus please" mechanism.  Or should this be
-   implicit in a specific surface type?
-
-EWMH
-
- - configure should provide dx_left, dx_right, dy_top, dy_bottom, or
-   dx, dy, width and height.
-
- - move to workspace, keep on top, on all workspaces, minimize etc
-   requests for implementing client side window menu? or just make a
-   "show window menu" request to let the compositor display and manage
-   a popup window?
-
- - window move and resize functionality for kb and touch.
-
- - Protocol for specifying title bar rectangle (for moving
-   unresponsive apps).  Rectangle for close button, so we can popup
-   force-close dialog if application doesn't respond to ping event
-   when user clicks there.  We could use the region mechanism here
-   too.
-
- - popup placement protocol logic.
-
- - subsurface mechanism.  we need this for cases where we would use an
-   X subwindow for gl or video other different visual type.
-
-EGL/gbm
-
- - Land Robert Braggs EGL extensions: frame age, swap with damage
-
- - Make it possible to share buffers from compositor to clients.
-   Tricky part here is how to indicate to EGL on the server side that
-   it should make an EGLImage available to a client.  We'll need a
-   "create a wl_buffer for this EGLImage for this client" kind of
-   entry point.
-
- - Protocol for arbitrating access to scanout buffers (physically
-   contiguous memory).  When a client goes fullscreen (or ideally as
-   the compositor starts the animation that will make it fullscreen)
-   we send a "give up your scanout buffer" to the current fullscreen
-   client (if any) and when the client acks that we send a "try to
-   allocate a scanout buffer now" event to the fullscreen-to-be
-   client.
-
-
-Misc
-
- - glyph cache
-
-    - Needs a mechanism to pass buffers to client.
-
-      buffer = drm.create_buffer(); /* buffer with stuff in it */
-
-      cache.upload(buffer, x, y, width, height, int hash)
-
-      drm.buffer: id, name, stride etc /* event to announce cache buffer */
-
-      cache.image: hash, buffer, x, y, stride /* event to announce
-					      * location in cache */
-
-      cache.reject: hash   /* no upload for you! */
-
-      cache.retire: buffer /* cache has stopped using buffer, please
-			    * reupload whatever you had in that buffer */
-
- - A "please suspend" event from the compositor, to indicate to an
-   application that it's no longer visible/active.  Or maybe discard
-   buffer, as in "wayland discarded your buffer, it's no longer
-   visible, you can stop updating it now.", reattach, as in "oh hey,
-   I'm about to show your buffer that I threw away, what was it
-   again?".  for wayland system compositor vt switcing, for example,
-   to be able to throw away the surfaces in the session we're
-   switching away from.  for minimized windows that we don't want live
-   thumb nails for. etc.
-
-
-Clients and ports
-
- - port gtk+
-
-    - draw window decorations in gtkwindow.c
-
-    - Details about pointer grabs. wayland doesn't have active grabs,
-      menus will behave subtly different.  Under X, clicking a menu
-      open grabs the pointer and clicking outside the window pops down
-      the menu and swallows the click.  without active grabs we can't
-      swallow the click.  I'm sure there much more...
-
-    - dnd, copy-paste
-
- - Investigate DirectFB on Wayland (or is that Wayland on DirectFB?)
-
-
-Ideas
-
- - A wayland settings protocol to tell clients about themes (icons,
-   cursors, widget themes), fonts details (family, hinting
-   preferences) etc.  Just send all settings at connect time, send
-   updates when a setting change.  Getting a little close to gconf
-   here, but could be pretty simple:
-
-     interface "settings":
-       event int_value(string name, int value)
-       event string_value(string name, string value)
-
-   but maybe it's better to just require that clients get that from
-   somewhere else (gconf/dbus).
-
-
-Crazy ideas
-
- - AF_WAYLAND - A new socket type.  Eliminate compositor context
-   switch by making kernel understand enough of wayland that it can
-   forward input events as wayland events and do page flipping in
-   response to surface_attach requests:
-
-    - ioctl(wayland_fd, "surface_attach to object 5 should do a kms page
-			 flip on ctrc 2");
-
-    - what about multiple crtcs? what about frame event for other
-      clients?
-
-    - forward these input devices to the client
-
-    - "scancode 124 pressed or released with scan codes 18,22 and 30
-       held down gives control back to userspace wayland.
-
-    - what about maintaining cursor position? what about pointer
-      acceleration?  maybe this only works in "client cursor mode",
-      where wayland hides the cursor and only sends relative events?
-      Solves the composited cursor problem.  How does X show its
-      cursor then?
-
-    - Probably not worth it.