3 - scanner: wl_* prefix removal: split it out into a namespace part so
4 we can call variables "surface" instead of "wl_surface"?
6 - Framebased input event delivery.
8 - Protocol for arbitrating access to scanout buffers (physically
9 contiguous memory). When a client goes fullscreen (or ideally as
10 the compositor starts the animation that will make it fullscreen)
11 we send a "give up your scanout buffer" to the current fullscreen
12 client (if any) and when the client acks that we send a "try to
13 allocate a scanout buffer now" event to the fullscreen-to-be
16 - Next steps based on EGL_WL_bind_display: create EGLImageKHR from
17 shm buffers? async auth in the implementation of the extension?
19 - wayland-egl: lazy-copy-back swapbuffer, sub-window.
21 - configure should provide dx_left, dx_right, dy_top, dy_bottom, or
22 dx, dy, width and height.
24 - surface.set_grab_mode(GRAB_OWNER_EVENTS vs GRAB_SURFACE_EVENTS), to
25 make menus work right: click and drag in a menubar grabs the
26 pointer to the menubar (which we need for detecting motion into
27 another menu item), but we need events for the popup menu surface
32 - Needs a mechanism to pass buffers to client.
34 buffer = drm.create_buffer(); /* buffer with stuff in it */
36 cache.upload(buffer, x, y, width, height, int hash)
38 drm.buffer: id, name, stride etc /* event to announce cache buffer */
40 cache.image: hash, buffer, x, y, stride /* event to announce
41 * location in cache */
43 cache.reject: hash /* no upload for you! */
45 cache.retire: buffer /* cache has stopped using buffer, please
46 * reupload whatever you had in that buffer */
50 - Drag should not be tied to a source surface, just the client.
51 the grab will break if the surface goes away, but the wl_drag
52 struct doesn't need to hold on to the source surface.
54 - Root window must send NULL type (to decline drop) or
55 x-wayland/root-something type if the source offers that. But
56 the target deletes the drag_offer object when drag.pointer_focus
59 - How do we animate the drag icon back to the drag origin in case
60 of a failed drag? Client should set drag icon separately,
61 compositor can do it then.
63 - How to handle surfaces from clients that don't know about dnd or
64 don't care? Maybe the dnd object should have a
65 dnd.register_surface() method so clients can opt-in the surfaces
66 that will participate in dnd. Or just assume client is not
67 participating until we receive an accept request.
69 - Selection/copy+paste issues: is it sufficient to only introduce
70 the selection offer when a client receives kb focus? Or maybe
71 it is actually a security feature? Clipboard manager in server
72 for retained selections?
74 - Pointer image issue:
76 - A direct touch input device (eg touch screen) doesn't have a
77 pointer; indicate that somehow.
79 - Cursor themes, tie in with glyph/image cache.
81 - A "please suspend" event from the compositor, to indicate to an
82 application that it's no longer visible/active. Or maybe discard
83 buffer, as in "wayland discarded your buffer, it's no longer
84 visible, you can stop updating it now.", reattach, as in "oh hey,
85 I'm about to show your buffer that I threw away, what was it
86 again?". for wayland system compositor vt switcing, for example,
87 to be able to throw away the surfaces in the session we're
88 switching away from. for minimized windows that we don't want live
91 - Event when a surface moves from one output to another.
93 - input device discovery, hotplug
95 - Advertise axes as part of the discovery, use something like
96 "org.wayland.input.x" to identify the axes.
98 - keyboard state, layout events at connect time and when it
99 changes, keyboard leds
105 - synaptics, 3-button emulation, scim
107 - multi gpu, needs queue and seqno to wait on in requests
109 Destkop/EWMH type protocol
111 - Add protocol to let applications specify the effective/logical
112 surface rectangle, that is, the edge of the window, ignoring drop
113 shadows and other padding. The compositor needs this for snapping
114 and constraining window motion. Also, maybe communicate the opaque
115 region of the window (or just a conservative, simple estimate), to
116 let the compositor reduce overdraw.
118 - Protocol for specifying title bar rectangle (for moving
119 unresponsive apps) and a rectangle for the close button (for
120 detecting ignored close clicks).
124 - pull in actions logic from xserver
126 - pull in keycode to keysym logic from libX11
128 - expose alloc functions in libxkbcommon, drop xserver funcs?
130 - pull the logic to write the xkb file from xkb_desc and names into
131 libxkbcommon and just build up the new xkb_desc instead of
132 dump+parse? (XkbWriteXKBKeymapForNames followed by
133 xkb_compile_keymap_from_string in XkbDDXLoadKeymapByNames)
135 - pull in keysym defs as XKB_KEY_BackSpace
137 - figure out what other X headers we can get rid of, make it not
138 need X at all (except when we gen the keysyms).
140 - Sort out namespace pollution (XkbFoo macros, atom funcs etc).
142 - Sort out 32 bit vmods and serialization
149 - draw window decorations in gtkwindow.c
151 - Details about pointer grabs. wayland doesn't have active grabs,
152 menus will behave subtly different. Under X, clicking a menu
153 open grabs the pointer and clicking outside the window pops down
154 the menu and swallows the click. without active grabs we can't
155 swallow the click. I'm sure there much more...
159 - Investigate DirectFB on Wayland (or is that Wayland on DirectFB?)
161 - SDL port, bnf has work in progress here:
162 http://cgit.freedesktop.org/~bnf/sdl-wayland/
164 - libva + eglimage + kms integration
169 - A wayland settings protocol to tell clients about themes (icons,
170 cursors, widget themes), fonts details (family, hinting
171 preferences) etc. Just send all settings at connect time, send
172 updates when a setting change. Getting a little close to gconf
173 here, but could be pretty simple:
175 interface "settings":
176 event int_value(string name, int value)
177 event string_value(string name, string value)
179 but maybe it's better to just require that clients get that from
180 somewhere else (gconf/dbus).
185 - AF_WAYLAND - A new socket type. Eliminate compositor context
186 switch by making kernel understand enough of wayland that it can
187 forward input events as wayland events and do page flipping in
188 response to surface_attach requests:
190 - ioctl(wayland_fd, "surface_attach to object 5 should do a kms page
193 - what about multiple crtcs? what about frame event for other
196 - forward these input devices to the client
198 - "scancode 124 pressed or released with scan codes 18,22 and 30
199 held down gives control back to userspace wayland.
201 - what about maintaining cursor position? what about pointer
202 acceleration? maybe this only works in "client cursor mode",
203 where wayland hides the cursor and only sends relative events?
204 Solves the composited cursor problem. How does X show its
207 - Probably not worth it.