Commit Graph

15708 Commits

Author SHA1 Message Date
Jonas Dreßler
04c781674c Move WindowPreviewLayout from JS to C
This layout manager is used quite often and the time we spend calling
it's allocate and get_preferred_width/heigth functions increases with
every open window.

We can save a lot of precious time during the layout cycle by moving
this layout manager from JS to C, thus avoiding the overhead of
trampolining between C and JS land.

In a measurement where the average time spent in vfunc_allocate() of the
Workspace actor was measured while opening an overview with 20 windows,
the average time spent went down from 3.1 ms to 2.3 ms.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1743>
2021-03-09 15:40:49 +00:00
Jonas Dreßler
3eb40df06b panel: Don't change text color when entering the overview or lockscreen
With the introduction of the transparent panel in the overview, we
started making the panel text/icon color slightly brighter in the
overview and on the lockscreen to ensure best contrast. Now
unfortunately, setting the text color incurred a relayout of the
underlying ClutterText actor (fixed with
https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1750), and
setting the icon color causes the icon texture to get regenerated
(fixed with
https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/932).
Regenerating the icon texture will replace the icon actor, which also
causes a relayout.

This relayout of the panel has been measured to add at least 1
millisecond (the numbers fluctuated a lot) to about 5 ms it takes to
layout the first frame when showing the overview.

Since https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/932 is
unlikely to land this cycle, this commit proposes a different solution:
Simply don't use a different color for text in the overview. To avoid
issues with contrast in the overview, make the default color slightly
brighter and change it from #ccc to #ddd.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1733>
2021-03-09 13:15:09 +00:00
Jonas Dreßler
5de9166f7a panel: Only update appMenu icon when the app actually changed
Right now we always recreate the icon of the appMenu when calling
_sync(). This will relayout the panel everytime we open the overview,
because we call _sync() in that case.

We can easily avoid that by only recreating the icon actor in case the
app that's opened actually changes. This gets us close to doing no more
relayouts of the panel when opening the overview.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1733>
2021-03-09 13:15:09 +00:00
Jonas Dreßler
e6c1db2bc8 panel: Don't completely hide AppMenuButton when invisible
We already set the AppMenuButton to be non-reactive and transparent when
we hide it. Hiding it completely using clutter_actor_hide() will
additionally make it no longer affect layout and thus queue a relayout.

Since we hide the appMenu in the overview and we want to avoid
relayouting the panel when entering and leaving the overview, don't
completely hide the AppMenuButton to avoid queueing this relayout.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1733>
2021-03-09 13:15:09 +00:00
Florian Müllner
fb1ab4f20b windowManager: Limit super-scroll handling to normal mode
The overview has it's own workspace scroll handling, and we don't want
to switch workspaces in other modes. Limiting the scroll-event handler
to NORMAL mode matches the swipe tracker used by WorkspaceAnimation,
and allows for other uses of scroll events (like scrolling in the
alt-tab popup).

https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/3840

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1746>
2021-03-09 12:28:36 +00:00
Marek Černocký
3669faaa47 Updated Czech translation 2021-03-08 19:38:40 +01:00
Sebastian Keller
b853316498 ctrlAltTab: Fix usage of bind_cairo_surface_property
This updates the use of bind_cairo_surface_property for the changes
from d7cb2eeebc. Now this function returns a StImageContent and not
an Actor like the following code expects, so wrap it in a StIcon.
Also the function lost its size argument.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1718>
2021-03-08 09:21:25 +00:00
Sebastian Keller
99dd5ece55 st/texture-cache: Change bind_cairo_surface_property to transfer full
This is how the code works and how it is already used from the C side.
There would also be no point in keeping this transfer none, because
textures generated from this function will not be shared and are not
kept in the cache.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1718>
2021-03-08 09:21:25 +00:00
Sebastian Keller
19e5f35569 Revert "st: Keep weak ref on texture cache bound texture source"
This reverts commit 87558efbf1.

The commit did not fix the bug it was supposed to fix, it just
complicated the code. The hopefully correct fix is in the previous
commit.

The point of this commit was to ensure everything gets removed when
bind->source gets removed. This however was already the case since the
signal handler was already connected to bind->source and has a
destructor registered that takes care of everything. And since gobject
destroys its signal handlers before it clears the weak refs, this new
weak ref was effectively never being used.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1718>
2021-03-08 09:21:25 +00:00
Sebastian Keller
606ec25f8b st/texture-cache: Don't overwrite existing bind images on texture reset
If the icon surface of a window got updated and its type or format no
longer match what we expect, st_texture_cache_reset_texture() might
overwrite the existing image in the bind with a new image, while still
keeping the weak ref on the old image. Due to this the old image might
trigger a st_texture_cache_on_pixbuf_notify() after the bind has already
been freed by g_signal_handlers_destroy() in the bind source. While this
usually would remove the weak ref, the weak ref it tries to remove is
on the new image, not the old one. The call to
st_texture_cache_on_pixbuf_notify() then tries to read the already
free'd memory from the bind which causes the cast to G_OBJECT to fail,
resulting in the crash.

Fixes https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/3785

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1718>
2021-03-08 09:21:24 +00:00
Daniel Mustieles
f6cfefa0be Updated Spanish translation 2021-03-08 09:40:38 +01:00
Rūdolfs Mazurs
1066a1bd08 Update Latvian translation 2021-03-07 18:31:06 +00:00
Sebastian Keller
f9f936e71a shell/app: Avoid adding windows with a startup workspace twice
Changing the workspace of a window causes the window tracker to remove
and add it to the app again. If this happens from within
_shell_app_add_window() before the window has been added to the windows
list, this will cause the check that is supposed to prevent adding the
same window multiple times to fail and the window to be added twice.
The app will then be considered still running after the last window has
been closed. Then when clicking on the corresponding app icon, the shell
would attempt to switch to a NULL workspace for the closed window
instead of starting a new instance, resulting in a crash.

Changing the workspace also needs to happen after increasing the
interesting window count, because otherwise removal of the window by
the window tracker would trigger a uint underflow leading the app to be
considered running with UINT_MAX interesting windows, despite having no
windows, leading to crashes right after launching the app.

Fixes https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/3833

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1745>
2021-03-07 16:23:08 +00:00
Piotr Drąg
d4ae968d05 Update Polish translation 2021-03-07 13:41:35 +01:00
Danial Behzadi
aefafc5f2c Update Persian translation 2021-03-07 04:00:44 +00:00
Philipp Kiemle
3d9bfbb0f8 Update German translation 2021-03-06 17:27:55 +00:00
Jonas Dreßler
7a57528bd7 workspaceThumbnail: Update visibility when showing the overview
There's currently a bug that we continue showing the workspace minimap
when the number of workspaces changes back to 1 during the session (ie.
outside the overview). Fix that by also updating the workspaceThumbnails
visibility when entering the overview.

https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/3819

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1741>
2021-03-04 12:39:37 +00:00
Jonas Dreßler
bd7e3f4d6b theme/screen-shield: Use the same background color as in the overview
The overview uses $system_bg_color as its background color, and since we
nowadays show the overview right after starting up, it makes sense to
use the same background color for the login screen.

Fixes https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/3812

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1742>
2021-03-04 11:33:03 +00:00
Ivan Molodetskikh
35fb221a7e workspace: Check if index is valid before using it
If the window wasn't in _windowSlots, the index is -1, so the last
element of the array is removed, leading to
https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/3547

I logged the stack trace from removeWindow() and it seems that when you
move the window from the second monitor to another workspace like shown
in https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/3547,
removeWindow() is called twice for it, presumably once for the second
monitor workspace, and then once for the first monitor workspace for
some reason. It is during that call that _windowSlots doesn't contain
the window, so instead the last element (index -1) is removed, leading
to the animation bug.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1727>
2021-03-03 19:56:45 +00:00
Florian Müllner
ff163a03b9 ci: Update ci-fairy image
Previously the information which commit failed a commit message check
was hidden in parts of the report that don't show up in gitlab's UI.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1740>
2021-03-03 20:29:22 +01:00
Florian Müllner
30f0c9f943 workspaceThumbnails: Update indicator on workspace changes
We block state updates while the indicator for the active workspace
is animating. To track that, we check whether the scroll-adjustment's
value matches the active workspace index. That works as long as the
adjustment's value changes after the active workspace, but not when
switching workspaces via SwipeTracker which only changes the active
workspace after transitioning to the new scroll value.

To fix that, update the indicator on workspace changes as well.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1716>
2021-03-03 18:04:13 +00:00
Florian Müllner
fac50fb50e workspaceThumbnail: Queue state update after expanding
New workspaces are added in two steps, first the minimap expands to make
room for the new thumbnail, then the thumbnail animates in. However we
currently don't queue a state update after the first step, so the second
one only happens after one is queued by some other event (like a workspace
switch).

https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/3748

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1716>
2021-03-03 18:04:13 +00:00
Jonas Dreßler
7f99655067 iconGrid: Only animate items when we actually need it
Animating items of the iconGrid involves calling a few more C functions,
which is quite slow. Especially calling ClutterActor.set_easing_delay()
is slow because we override that function in JS to adjust for the
animation slow-down factor. So add a small class variable to make sure
we only animate the icons of the grid when we actually need it.

This makes the average time spent in vfunc_allocate() of the iconGrid go
down to about 0.7 ms.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1713>
2021-03-03 17:59:16 +00:00
Jonas Dreßler
7771bf4437 iconGrid: Save class variables to local ones
It's quite slow to access class variables in JS, especially when they're
backed by GObject properties. To avoid accessing them in every iteration
when we're looping through the children of iconGrid, store those values
to another variable and reuse that inside the loop.

This shaves off another 0.2 ms from iconGrids vfunc_allocate(), getting
the average time spent in that function down from 1.3 ms to 1.1 ms.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1713>
2021-03-03 17:59:16 +00:00
Jonas Dreßler
7a5650d868 iconGrid: Bail out of getRowPadding early if we'll return 0
This gets our time spent in vfunc_allocate() down again by ~0.1 ms from
1.4 ms to 1.3 ms.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1713>
2021-03-03 17:59:15 +00:00
Jonas Dreßler
0fd394d4ca iconGrid: Don't update pages in vfunc_allocate()
vfunc_allocate() is a hot path, and we don't want to do expensive stuff
there, so avoid updating the pages, which seems unnecessary anyway.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1713>
2021-03-03 17:59:15 +00:00
Jonas Dreßler
0978b87e65 iconGrid: Get max child size using existing array of visible children
Using a preexisting array to iterate over is much faster than iterating
over the actors children using a "for ... of" loop, that's because the
latter calls into C functions to get the next actor all the time.

Also, stop using array deconstruction here, it turned out that this is
extremely expensive. When profiling this part of the code, it turned out
that only 9% of the time spent in _getChildrenMaxSize() is spent calling
the get_preferred_height/width() methods. When not using array
deconstruction, this time increased to 22%, still not great, but a lot
better.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1713>
2021-03-03 17:59:15 +00:00
Jonas Dreßler
8e93806453 iconGrid: Cache visible children of pages
We need to access the visible children of a page in inside
vfunc_allocate(), and since getting those children is quite slow (it
involves iterating over all the children of the actor) let's avoid that
and cache the array instead.

This reduces average time spent in vfunc_allocate() of the iconGrid from
1.6 ms down to 1.4 ms.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1713>
2021-03-03 17:59:15 +00:00
Jonas Dreßler
b3c46a33c0 iconGrid: Cache max size of children
We call this._getChildrenMaxSize() from the allocate() vfunc of
IconGridLayout. Since the function is quite expensive, it slows the
layout process down a lot, so instead of re-calculating it on every
relayout, cache the max size of children.

This makes the average time spent in vfunc_allocate() of the iconGrid go
down from 2.3 ms to 1.6 ms.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1713>
2021-03-03 17:59:15 +00:00
Ivan Molodetskikh
0a144ee54f workspace: Fix switched arguments
Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1738>
2021-03-03 15:08:17 +00:00
Felix Divo
9ebfd0874c Add a link to supported releases in the README and bug template
Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1246>
2021-03-03 14:47:20 +00:00
Jonas Dreßler
31d7770eeb workspace: Center-align window previews if there's only a single row
Instead of always aligning window previews vertically at the bottom of
their row, only do that if we have multiple rows. If there's only a
single row of windows, align every window vertically centered.

This is a very small step towards the new layout for window previews in
the overview, but since the release of 40 is getting nearer and nearer,
changing more is not feasible anymore.

https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/3634

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1737>
2021-03-03 15:02:52 +01:00
Jonas Dreßler
9b9be4a1a5 workspace: Decrease spacing between workspaces in the window picker
Use a bit less spacing between the workspaces in the window picker, this
uses more of the available space and makes it easy to take a peek at
adjacent workspaces.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1702>
2021-03-03 12:08:58 +00:00
Jonas Dreßler
99378b6dae workspace: Scale down wallpaper by a fixed number of pixels
To ensure the workspace thumbnails are vertically closer to the window
picker than to the search, scale down the wallpapers by a fixed number
of pixels. Using 24 px for this means we'll take of 12 px at the top and
12 px at the bottom of the wallpaper, that's a better strategy than
always scaling it by a fixed factor since it doesn't change with the
monitor size.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1702>
2021-03-03 12:08:58 +00:00
Jonas Dreßler
df9129b2a0 theme/search-entry: Tweak the margins a bit
Use a bit less margin at the top and add some margin at the bottom of
the search entry. This should ensure the search entry is closer to the
panel than to the workspaces and avoid associating the workspace
thumbnails with the search instead of the window picker.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1702>
2021-03-03 12:08:58 +00:00
Jonas Dreßler
a27009f926 theme/dash: Tweak margins of the dash
The Dash currently has a horizontal margin and a top margin applied. The
horizontal margin isn't necessary since there already is a horizontal
padding applied, and the top margin is a bit large, since the
ControlsLayout enforces a spacing between the different containers
already, so slightly decrease the margin-top here.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1702>
2021-03-03 12:08:58 +00:00
Jonas Dreßler
613efa72f3 theme/overview: Use a spacing of 16px between elements
In the overview we want to make sure window previews are shown as large
as possible, so make the spacings a bit less excessive and only use a
16px spacing.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1702>
2021-03-03 12:08:58 +00:00
Georges Basile Stavracas Neto
9bce2a02be overview: Don't show black panel on startup
The back → transparent transition gives it a very bad look when
booting and running the startup animation.

Use the same transition duration hack to ensure that the panel
starts completely transparent.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1678>
2021-03-02 23:14:07 +00:00
Georges Basile Stavracas Neto
72505227b7 panel: Bind style to corners' style
There's this little hack that we do to match the panel transition from
transparent to black with leaving the overview via swipe down. The only
problem is that, while the duration of the panel transition itself is
matches, the corners don't, and they get out of sync.

This isn't very noticeable with the swipe gesture, but it'll be much
more prominent when booting straight into the overview.

Bind the 'style' property of the panel to the corners', so that the
transition duration hack applies to all of them.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1678>
2021-03-02 23:14:07 +00:00
Georges Basile Stavracas Neto
c4e43efb1e overview: Implement startup animation
The new startup animation consists of rising the Dash from the bottom,
falling the search entry from the ceiling, and going from HIDDEN to
WINDOW_PICKER with an opacity applied.

One little trick from IconGridLayout was added to ControlsManagerLayout,
which is a promises-based wait for allocation. This is required to make
sure that the transformed position of the search entry is valid, which
is only the case right after an allocation.

This animation also ensures that the overview is shown right on startup.

For session modes that do not have an overview, continue using the same
fade + scale animation.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1678>
2021-03-02 23:14:07 +00:00
Georges Basile Stavracas Neto
930d0b6151 overviewControl: Store search entry container
It'll be used by the next commit.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1678>
2021-03-02 23:14:07 +00:00
Georges Basile Stavracas Neto
e3f12e3e23 layout: Update workspace struts even while starting up
We want to avoid updating the input region on startup, since it incurs
in roundtrips to the X server, but not workspaces struts, since they
affect the visible clip of wallpapers in the workspace. Since next
commits will make the overview be the after-boot screen, we really
don't want the wallpaper to be clipped wrongly.

Allow updating regions while starting up, but only workspace struts.
Make sure input is not updated by accounting for 'this._startingUp'
on 'wantsInputRegion'.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1678>
2021-03-02 23:14:07 +00:00
Georges Basile Stavracas Neto
bc0974618f layout: Don't build input region rects on Wayland
This is an X11-specific routine, and building the list of input region rects
on Wayland is a waste, since it incurs in many trampolines only to throw them
in the trash.

Don't build input region rects on Wayland. By modifying the 'wantsInputRegion'
variable, it also skips actors that only update input, which is another small
optimization for Wayland.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1678>
2021-03-02 23:14:07 +00:00
Georges Basile Stavracas Neto
ba0b9239d3 layout: Allow updating struts in Overview
LayoutManager doesn't update struts when there's any modal running. Turns
out, the Overview itself is a modal. That, and the fact that the Overview
will be the startup state, prevents the workarea to be updated.

Allow updating struts when there's no other modal than the Overview.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1678>
2021-03-02 23:14:07 +00:00
Remi Salmon
9cd211a99a status/network: Use the same signal strength values as GNOME Settings
Be consistent and use the same wifi signal strength thresholds that are
used by Settings to ensure that the signal strengths look the same in
Settings and gnome-shell.

See https://gitlab.gnome.org/GNOME/gnome-control-center/-/blob/master/panels/netwo>
for the	values used in Control Center.

Fixes https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/217

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1432>
2021-03-02 23:07:01 +00:00
Florian Müllner
9a273e1db2 shell/app: Handle workspace from startup notifications
Launching applications on a particular workspace works through
launch contexts and startup notifications. While this is no
longer required by a launcher/WM split, in theory this allows
us to reliably identify the correct window to apply startup
properties to.

However in practice we fail more often than not: Missing support in
toolkits, differences between display protocols, D-Bus activation
and single-instance applications all provide their own pitfalls.

So instead, take advantage of the fact that launcher and WM live in
the same process, and go with the unsophisticated approach: Just
remember the last workspace that was requested when launching an
app, then move the next window that is associated with the app to
that workspace.

This will break X11 applications that set an initial workspace, but
that's legacy functionality anyway (given that there's no wayland
protocol for that functionality), and seems a price worth paying
for making launching apps on workspaces more reliable.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1316>
2021-03-02 23:18:58 +01:00
Carlos Garnacho
40b67a140a st/scrollview: Apply correct fade_edges_left/right effect uniforms in RTL
When the setting is false, we apply anyway depending on the adjustment
value. Look for the right value corresponding to that side as per the
locale.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1630>
2021-03-02 22:02:56 +00:00
Carlos Garnacho
9b24d9c4c0 appDisplay: Don't reset adjustment on ::pages-changed
Let the goToPage call afterwards to take precedence, instead
of resetting the adjustment (thus the view) on the side.

This resulted in strange state when the last page contains
a single icon, and it is dragged. The last page being emptied
triggers a pages-changed signal, which half resets the view
to the first page while DnD is ongoing.

Letting goToPage do its business means we neatly clamp to the
closest page to currentPage, the last page in that case.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1630>
2021-03-02 22:02:56 +00:00
Carlos Garnacho
ec223f31d9 appDisplay: Slide page hints along page switching
When clicking on the page hints, the hint rectangles being visible
in place and not moving together with the page is a bit too
distracting.

Since the page hints are not part of the iconGrid hierarchy and
we have just 2 general ones for prev/next page (i.e. no page
associated), do this sliding via some smoke and mirrors: We don't
slide the page hints, but a parent container for both of them, and
we also control opacity so that the container is fully transparent
mid-page. At the point it is transparent, the container can be
snapped to the other side of the page, and faded back in as it
slides together with it, so it always looks like it goes away and
comes from the right sides.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1630>
2021-03-02 22:02:56 +00:00
Carlos Garnacho
9e5b357b0b appDisplay: Adapt to available extra space showing icon grids
Depending on the available horizontal space, we may want to manipulate
the icon grid and scroll view spacing to result in an optimal layout
that has space left to preview prev/next pages.

The main change here is that, when adapting to the available size, the
space given to a page does not necessarily match the available space,
as we need to be able to show more than one page at a time.

With this decoupling of available and page sizes in place, we now know
how much space there is available in order to extend the padding between
pages, or the fade effect applied to the previewed pages.

Underneath, we rely a bit less on hardcoded CSS paddings, and a bit more
on the StScrollView::content-padding property.

All put together, gives us proper space management from ultra-wide
displays, to display ratios that are close to the optimal grid ratio.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1630>
2021-03-02 22:02:56 +00:00