Previously we used a bunch of heuristics for this. We checked if velocity
was directed towards the nearest snap point and its value was larger than
a threshold. If it is, we completed the swipe, otherwise we cancelled it.
This was good enough at the time, because this code was originally written
for back/forward swipe. Since then, the swipe tracker was extended to
handle arbitrary snap points and not just 0 and 1, or -1 and 0, depending
on text direction. After that it was iterated on, but never significantly
redone.
This worked well enough, but had two problems:
1. In some cases, notably overview, it may be wanted to be able to swipe
through multiple pages at once. This wasn't really possible because we
always picked the adjacent snap point.
2. Since we can't do that well, we want to restrict swipes to one page at a
time. It was done in a rather hacky way by clamping the position into
[-1, 1] range from the place where we started the swipe. This works
if we start the swipe from idle position, but if an animation was
already going, the range would be clamped to arbitrary values, and very
likely containing only one snap point, which we already swiped past at
this point. In this case, finishing the swipe would cancel it regardless
of velocity. This means that if one tries to quickly move through
carousel pages via swiping, half of the swipes will be inexplicably
cancelled.
We'll use the deceleration formula from
https://medium.com/@esskeetit/how-uiscrollview-works-e418adc47060#10ce
to calculate then projection point, then pick the nearest snap point and
calculate the duration as we did before. It works well enough for short
distances, but has two problems:
1. It caps the maximum distance at a pretty low value - about 5 pages in my
testing.
2. With how we pick the nearest snap point, it's too easy to accidentally
cancel the swipe,
To combat the first problem, we can modify the curve: only use linear
function at small distances, and smoothly transition it to a parabola
further.
For the second problem we can add two special cases: first, if the swipe
ended up between the initial snap point and the next one, we always prefer
the latter. Second, a good old velocity threshold for cancelling.
We'll also use a slightly smaller deceleration value for touchpad: 0.997
instead of 0.998.
Now that we can pick any snap point, the [-1, 1] clamping doesn't make
sense anymore, so instead let's replace it with a more flexible
mechanism: if we're near a snap point, pick its adjacent snap points.
Otherwise, take the two nearest snap points, and take their adjacent
snap points. This way we have 3 snap points to choose from when
starting a swipe from an idle position, and 4 if we start during an
ongoing transition.
This way, if we've just swiped from snap point n to n+1, the transition
will pick snap points n-1, n, n+1, n+2 and if we swipe again, we will
likely land on n+2. During that transition, if we swipe again, it will
likely have already passed the snap point n+1, so this time the available
snap points will be n, n+1, n+2, n+3, so we can swipe again and it will
still complete, and so on.
This will make it easy to allow multi-page swipes as well, by just
removing the clamping.
Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1647>
In some cases we may get anevent with very low delta at the end of the
swipe. While we can't completely ignore them, we can smooth them using a
scroll history, similarly to what GTK kinetic scrolling does: keep track
of the last 150ms of events, and sum their deltas when calculating the
velocity.
The logic is based on what GTK does in GtkGestureSwipe and
GtkEventControllerScroll.
Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1647>
The reason this wasn't using the Gio.DBus.makeProxyWrapper() convenience API is that it passes custom flags to the proxy, and that wasn't supported by the wrapper at the time.
As this is now possible, this commit migrates us to the new API.
Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1572>
Commit 473e77e2c5 fixed applying the :insensitive pseudo class to
initially unreactive widgets, and adjusted the style test to work
with that.
In hindsight, we can do better than just making the test work, and
include a test case for the :insensitive styling as well (namely
the issue the previous commit was fixing).
Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1649>
Let empty input result in an error, just like other invalid commands
(bad syntax, nonempty whitespace, etc.). GLib already has an error
message “Text was empty (or contained only whitespace)” which it shows
for whitespace-only input, so letting that message apply also to empty
input makes sense.
This requires some tweaks further down the file to avoid interpreting
empty input as an empty path (relative to the home directory) and then
opening the home directory.
Part of https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/3183.
Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1442>
We are applying the :insensitive pseudo class to unreactive widgets,
or at least we are supposed to. As we currently only update the style
on notify, we don't apply it to initially unreactive widgets.
This was covered up partially until recently when Clutter started to
use G_PARAM_EXPLICIT_NOTIFY. Before that, the notify handler would run
when explicitly setting :reactive to FALSE at construction time.
Make sure we always apply the pseudo class correctly by updating it
after construct properties have been set.
https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/3685
Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1648>
We want to use the fast path of filling the entire area if either the
left and right shadows would overlap or the top and bottom shadows. The
latter check was wrong due to a typo resulting in the regular path
being used in some cases it couldn't (and shouldn't) handle.
This was causing the inset shadow used to highlight panel buttons to
not appear for buttons above a certain width.
Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1646>
Resource icons are added to the fallback icon theme, so they won't
get used if a matching icon is found in the configured theme.
That includes fallback names, so Adwaita's "window-close-symbolic"
takes precedence over "window-close-24-symbolic" in hicolor.
Fix this by using a custom name for a custom icon.
Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1640>
Adwaita uses ui/ for the corresponding icon, but GTK treats icons
from a resource path as part of the hicolor theme that doesn't
have such a subdir. And as GTK determines subdirs by enumerating
the theme directory, any subdirs that only exist in the resource
are ignored, whoops.
Make sure the icon can be found by moving it to a standard subdir.
Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1640>
The Message class this is derived from unconditionally adds a close
button with 0 opacity that only gets shown on hover for messages that
can actually be closed. The MPRIS MediaMessage however can never be
closed and having a close button can cause the title to be cut short
unexpectedly.
Similarly the secondary text which other notifications use to display
the notification time is always left empty here as well.
https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/3664
Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1632>
grabHelper is passing a boolean argument to onUngrab() callback function
and since commit 1acbdcc9b3 we'd end up adding it to to the callback list or
we'd try to invoke it:
(gnome-shell:3490851): Gjs-CRITICAL **: 17:19:20.460: JS ERROR:
TypeError: func is not a function
onComplete/<@/media/M2/GNOME/gnome-shell/js/ui/appDisplay.js:2407:56
onComplete@/media/M2/GNOME/gnome-shell/js/ui/appDisplay.js:2407:40
_makeEaseCallback/<@/media/M2/GNOME/gnome-shell/js/ui/environment.js:85:13
_easeActor/<@/media/M2/GNOME/gnome-shell/js/ui/environment.js:170:64
Use an arrow function so that we can control the parameters we pass
to popdown.
Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1635>
We now set a padding for the left and right
side of the pill. We also got rid of the padding on the icon.
Probably broken due to the removal of the dropdown arrow
which likly handled the padding the right side of this item before.
Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1615>
This get's rid of the single-indicator introduced in one of the latest
commits. This was causing the accessibility pill in the top panel
to have different padding from the keyboard layout pill.
Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1615>
So far, we couldn't allow workspace scrolling outside the overview
because scroll events were always sent to clients. However mutter
was changed recently to pass on scroll events when the mouse button
modifier (usually super) is pressed, which allows us to enable the
same workspace scrolling as in the overview now.
Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1612>
The design now calls for super-scroll for workspace switching
in the session, however it is currently only possible for
SwipeTracker to either handle scroll events or not.
In order to support the new use case, add a new :scroll-modifiers
property that allows specifying modifiers for which scroll events
are handled.
Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1612>
The code to update the actor position based on the cursor and current
scale was run in a 'new-frame' handler. This is working fine when
animations are enabled, but when they are turned off this does not work.
This is because the 'new-frame' signal is emitted before the changes for
that frame are applied. So with animations off the position was only
ever updated with the starting values. As a result the shrunk actor was
not being dragged by the position where it was clicked, but by where it
was clicked in the original size, which is likely not even on the shrunk
actor.
This change now also updates the position in the onComplete handler
which gets run with the final scale, even if the duration is 0.
Fixes https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/1699
Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1627>
Next commit will bind the workspace state adjustment to the snap
adjustment in WorkspacesView, and we'll need the preparation
steps but not the easing of the state adjustment.
Split preparation steps from zoomFromOverview() into a new method
prepareToLeaveOverview().
Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1613>
