xdotool will update modifiers before Xkb will actually send event
updating them, thus the modifiers will be updating even before the
actual update, which is unfortunate.
Links: https://github.com/alacritty/alacritty/issues/7502
The user may change the size during the on-going resize, meaning that
the size will desync with winit's internal loop which breaks viewporter
setup with fractional scaling.
Links: https://github.com/alacritty/alacritty/issues/7474
This appears to be the solution for the elusive #3335 issue. Previously,
in the Xlib backend, we used the "XRRQueryVersion" function to query for
the Xrandr version, and used that to determine whether we should use the
"GetScreenResources" call or the "GetScreenResourcesCurrent" call.
However, we passed the version "0, 0" into "XRRQueryVersion".
Previously with Xlib this wasn't a problem, as Xlib ignores the version
you pass in and substitutes it with the version of RandR it expects.
https://gitlab.freedesktop.org/xorg/lib/libxrandr/-/blob/master/src/Xrandr.c?ref_type=heads#L386-387
The way that "XRRQueryVersion" is implemented on the server end, it
compares the version passed into the request with the version supported
by the server. If the server's version is greater than the client
version, it just returns the client version. If the client's version is
greater, it passes the server's version. Since we were passing in "0, 0"
this means that the server returned "0, 0".
https://gitlab.freedesktop.org/xorg/xserver/-/blob/master/randr/rrdispatch.c?ref_type=heads#L50-59
To determine whether we use "GetScreenResources" or
"GetScreenResourcesCurrent", we compare the version returned by the
server against "1, 3". Since we got "0, 0"- a version of XRandR so old
it doesn't even exist- we use "GetScreenResources".
The problem manifests in that "GetScreenResources" can take several
seconds to query the screen state based on the current hardware
configuration. On the other hand, "GetScreenResourcesCurrent" is fast;
it uses the server's hardware cache if it is available.
This problem is visible in XTrace. On the latest `master`:
```
000:<:00c2: 12: RANDR-Request(140,0): QueryVersion major-version=0 minor-version=0
000:>:00c2:32: Reply to QueryVersion: major-version=0 minor-version=0
000:<:00c3: 8: RANDR-Request(140,8): GetScreenResources window=0x0000076e
000:>:00c3:1600: Reply to GetScreenResources:
```
On the `v0.28.0` tag:
```
000:<:0019: 12: RANDR-Request(140,0): QueryVersion major-version=1 minor-version=6
000:>:0019:32: Reply to QueryVersion: major-version=1 minor-version=6
...later
000:<:002d: 8: RANDR-Request(140,25): GetScreenResourcesCurrent window=0x0000076e
000:>:002d:1600: Reply to GetScreenResourcesCurrent
```
This commit fixes this issue by requesting "1, 3" instead. This returns
the version we expect, where we can now use "GetScreenResourcesCurrent"
properly.
Fixes#3335
Signed-off-by: John Nunley <dev@notgull.net>
This code confused me. I tried to understand it. I tried to simplify it
while keeping the functional style. But in the end, this just seems too
complicated for its own good. Just doing the exact same thing with a
match statement and the question mark operator makes it sooo much more
obvious what is happening.
Signed-off-by: Uli Schlachter <psychon@znc.in>
This protocol is only used for (optional) Client Side Decorations
(where) the compositor still takes the burden of compositing various
window parts together, via subsurfaces that all belong to a single
window.
If this core protocol is not available, as is the case on gamescope,
disable CSD.
The only breaking change is that x11rb no longer reports an error when
querying the WmSizeHints of a window that does not have this property
set. For this reason, the return type of WmSizeHintsCookie::Reply()
changed from Result<WmSizeHints, SomeError> to
Result<Option<WmSizeHints>, SomeError>.
In update_normal_hints(), previously a cryptic error would be reported
to the caller. Instead, this now uses unwrap_or_default() to get a
WmSizeHints. All fields of WmSizeHints are Options, so this produces an
empty object.
resize_increments() queries a value from the window and returns an
Option. Previously, the error for "missing property" was turned into
None via .ok(). This commit adds a call to flatten() to also turn
"property not set" into None.
Finally, request_user_attention() queries a window's WmHints property
and updates one field of it. The code already uses unwrap_or_default()
to deal with missing properties, so just a call to flatten() is needed
to merge "missing property" and "error while querying" into one.
Other changes in x11rb do not seem to affect this crate.
x11rb's MSRV increased from 1.56 to 1.63, which is still below the MSRV
of this crate, which is 1.65.
Signed-off-by: Uli Schlachter <psychon@znc.in>
Closes#3245
notgull forgot to properly interpret float data from the X server,
making him tonight's biggest loser.
Signed-off-by: John Nunley <dev@notgull.net>
