On Windows, GDI returns unintuitive names like "\\.\DISPLAY6" that
may not start numbered at either 0 or 1.
This commit grubs through the various APIs so that we can produce more
meaningful names like "DISPLAY6: Gigabyte M32u on NVIDIA 2080 TI"
instead.
This commit also makes the lua wezterm.window.screens() function
consistent with the internal resolve_geom functions that each different
implementation had, so that we can eliminate those functions in
favor of this new one on the ConnectionOps trait.
Still need to do macOS and verify that this commit doesn't break X11.
Currently implemented on X11 only, this function returns information
about the geometry of the screen(s).
This is taken from the same source of information we use for the
`--position` CLI argument to `wezterm start`.
```
> wezterm.window.screens()
{
"by_name": {
"DisplayPort-1": {
"height": 2160,
"name": "DisplayPort-1",
"width": 3840,
"x": 0,
"y": 0,
},
},
"main": {
"height": 2160,
"name": "DisplayPort-1",
"width": 3840,
"x": 0,
"y": 0,
},
"origin_x": 0,
"origin_y": 0,
"virtual_height": 2160,
"virtual_width": 3840,
}
```
This is a bit of an unsatisfactory commit... the bulk of it is
augmenting our calls into XCB to ensure that we check the status of each
request; the idea was that doing so would highlight the source of the
bad drawable error that is being surfaced in #2198, but after doing
that, it still doesn't highlight the offending call.
My conclusion is that either something in MESA/EGL or the IME is
generating calls that we cannot see into and that one of those is
referencing the window id that we just destroyed.
The resolution then is a bit gross: instead of destroying the window
when we need to close it, we first unmap it to remove it from the
screen, then after 2 seconds we destroy it.
refs: https://github.com/wez/wezterm/issues/2198
This commit adds more trace logging around selection
related events.
That tracing uncovered a situation, when multiple wezterm windows within
the same process were involved, where one window didn't receive a
selection-clear event notification.
Since Window::get_clipboard trusted our local understand of the
clipboard contents, it would return those until the selection was
changed in that window.
This commit changes that code to always ask the X server for the
selection. It makes pasting slightly slower, but should always produce
consistent results.
refs: https://github.com/wez/wezterm/issues/2110
deadkeys that are triggered through shift (eg: backtick on a German
layout) weren't working because we were trying to lookup in our maps
using `SHIFT | LEFT_SHIFT` when the map data was keyed only by `SHIFT`.
This commit removes the positional modifier flags from the modifier
keys and restores the correct behavior.
refs: https://github.com/wez/wezterm/issues/2102
This does two things:
* Sets the event queue owner explicitly to xcb
* Adopts a dri2 resize related workaround from the rust-xcb opengl
example
I think the latter is probably a NOP, but the former sounds like
something important.
refs: #1992
Adds a configuration option, `focus_change_repaint_delay` to allow customisation of the delay added in 9b6329b454.
The default delay remains 100ms, and can be disabled by setting it to `0`, if the workaround is not required on the user's system.
refs: #2063
refs: #1992
The hope here is that the nvidia-specific resize issue might have
a workaround if it is emitting some other events that we were
previously not listening for.
This commit optionally enables the Present extension and listens
for its version of CONFIGURE_NOTIFY, routing it through the same
logic as the base CONFIGURE_NOTIFY event.
On my AMD hardware under Gnome, I see something like:
```
18:04:26.476 TRACE window::os::x11::window > Present::ConfigureNotify: width 1168 -> 1180, height 858 -> 873, dpi 124.7998046875 -> 124.7998046875
18:04:26.478 TRACE window::os::x11::window > Ignoring X::ConfigureNotify (1180x873 dpi=124.7998046875) because width,height,dpi are unchanged
```
with the Present event firing before the X event.
Let's see how this goes.
refs: #2063
refs: #1992
Main idea here is to add expose events to the trace so that we
can get a sense of whether those are emitted when a WM isn't delivering
CONFIGURE_NOTIFY consistently.
If the exposed area is bigger than what we think the window is,
then we mark geometry as unsure.
I'm considering always marking as unsure for an expose event,
or at least, adding a config option to enable that, as a way
to workaround this situation.
refs: https://github.com/wez/wezterm/issues/2063
refs: https://github.com/wez/wezterm/issues/1992
This commit:
* Logs atom names in property change events (makes it easier to
understand user's logs)
* Sets flags in cases where property changes might imply that a
configure or focus event should have or should be sent
* Adjusts the "unsure about state" logic so that it doesn't just
trigger on the initial paint, but also on those flags being set
refs: https://github.com/wez/wezterm/issues/1992
I think this might only be a thing on Windows.
This commit speculatively (I'm on a mac at the moment!) allows tracking
the left/right control/shift modifier flags and passing that through
to the win32 input mode logic.
refs: https://github.com/wez/wezterm/issues/2009
Mutter recently started to enforce a protocol error that enforces
the ordering of buffer updates and that is flushing out some
bugs in various places; here's a related issue that I stumbled
into when I set my scaling to 300% and got stuck:
https://gitlab.gnome.org/GNOME/mutter/-/issues/2083
What that means to us is that we have to be careful when updating
the buffer scaling properties on our EGL surface.
We don't actually own the underlying buffer or the underlying
buffer commits, so we have to be a little indirect: what
we do here is detach the EGL managed buffer when we notice
that scaling has changed, and that appears to satisfy the
compositor.
refs: https://github.com/wez/wezterm/issues/1727
The rust xcb bindings seem to have gotten more strict in 1.x;
previously we might generate two DestroyWindow calls for the same
window when closing one and things were fine, but now the second
call generates a protocol error which has the effect of terminating
the program.
This commit ensures that we only generate a single DestroyWindow
call by zeroing out the saved window_id after we emit it.
refs: #1974
* Add support for drag and drop files in Windows
* Add two drag and drop filename quoting patterns (mainly) for Windows, change doc examples.
* Code style cleanup
* Improve Windows quoting pattern and rename DoubleQuoteAlways to WindowsAlwaysQuoted
* Improve special char finding for DroppedFileQuoting::Windows and fix doc.
This cleans up the `cargo audit` output on linux because the `clipboard`
crate (which hasn't been updated in 3 years) depends on xcb=0.8.2
which is flagged by cargo audit.
We don't use `clipboard` on any platform except macos
This commit switches to the `clipboard_macos` crate; that appears to
use a copy and paste of the macos specific code from the `clipboard`
crate, so this shouldn't have any change in functionality.
refs: https://github.com/wez/wezterm/issues/1952
The upgrade to a newer mio version caused the poll method
to report EINTR in some cases.
We don't need to terminate for those, so suppress it.
refs: https://github.com/wez/wezterm/issues/1955
a redo of 81d08325c1, which was a bit
more nuanced. Partially revert the logic from that commit and rephrase
it as factoring out the condition to make that part clearer, but restore
the original action, which is important in order to propagate the
modifiers through.
refs: https://github.com/wez/wezterm/issues/1907#issuecomment-1108797343
I think I'd like to make a config option for this, but for the moment,
this first pass unconditionally updates the base environment with
data from the registry.
refs: https://github.com/wez/wezterm/issues/1848
Looking closer, I think I'd misread the key event generated by
perform_key_equivalent for the ctrl-escape case as a key down.
Fixing this is fairly straightforward: when we return YES from
perform_key_equivalent we synthesize a key_down event.
macos will follow up with the key up.
We can fold two cases together in there and remove the horrible
hack style fix I just added in a4b68247bb
refs: https://github.com/wez/wezterm/issues/1877
We want to avoid normalizing control key presses; there were
two places where it was happening; one in our own code and
the other was in the xkeyboard mapping stuff itself.
refs: https://github.com/wez/wezterm/issues/1851
There are certain key combinations that macOS prefers to handle
without giving the application much opportunity to process them.
CTRL-ESC and CMD-. both cause doCommandBySelector(cancel:) to be
called. The former we had already special cased but since we
can't disambiguate the two things, we need a better way.
performKeyEquivalent: is a method we can implement to have an
opportunity to "do something" and prevent the default macOS behavior.
So we implement that. What's interesting is that saying that we handled
CMD-. results in no further processing at all by macOS, whereas saying
that we handled CTRL-ESC results in macOS doing the normal key event
dispatch. So we need to route that event for ourselves in that one
case.
Doesn't feel great!
refs: https://github.com/wez/wezterm/issues/1867
Go directly to the underlying env_logger crate, as pretty_env_logger
hasn't been updated in some time, and I'd like to be able to redirect
the log output to a file more directly, and that feature is in a newer
version of the env logger than pretty_env_logger was pulling in.
For reasons that I cannot remember, I made
`send_composed_key_when_left_alt_is_pressed` and
`send_composed_key_when_right_alt_is_pressed` only take effect if only
the ALT modifiers were pressed. If SHIFT or CTRL were pressed, then
the purpose of `send_composed_key_when_left_alt_is_pressed` was
bypassed.
This commit scopes this back to the alt mods - other kinds of mods
don't affect this functionality any more.
refs: https://github.com/wez/wezterm/issues/1826
We were pinned on the revision where I had added dual source blending,
because I wanted that feature ahead of the crate being published.
Since then a couple of releases have been made so we can unpin.
On Windows 11, we had a report of glium complaining about the opengl
version. I can't find that error message string in the current version
of the code so it's possible that that situation has been resolved.
refs: https://github.com/wez/wezterm/issues/1813
This is mostly a refactoring: pulling out the discrete width/height from
the `new_window` method and preparing to pass down x/y coords as well.
The types are expressed as Dimension so that screen relative sizes could
be expressed in the future... once we know how to obtain that
information on each platform.
refs: https://github.com/wez/wezterm/issues/1794
- Simplify scroll thumb calculations
- Correct thumb position when dragging with mouse
- Support border OS parameters
- Use usize for OS borders, to explicitly only accept positive integers
- Get correct tab height when using fancy tab bar
- Correctly draw depending on tab bar position
- Adjust minimum thumb size to be 1/2 of a cell height, so it has consistent size across platforms and screen densities
Fixes#1525
We don't assume that we start up focused, and some WM don't tell
us our focus state, so prior to painting, if we don't know the
focus state, explicitly query it and synthesize a focus change event.
refs: https://github.com/wez/wezterm/issues/1757
Flesh out the get_os_parameters impl for macOS. When running on a
system that provides `NSScreen::safeAreaInsets`, use that to determine
the border required to avoid the "notch" on certain models of mac.
In the GUI layer: when the os parameters include a border, adjust
the render position to account for it.
This is a bit of a speculative change, as I don't have a mac with
a notch.
refs: https://github.com/wez/wezterm/issues/1737
If the WM has never confirmed our size and we're about to paint,
explicitly query it and generate a resize event so that we stand
a better chance of showing the right stuff.
refs: https://github.com/wez/wezterm/issues/1710
When the user switches to another virtual console and then back into a
Wayland session, a number of seat updates are received by the listener
installed by `Environment::listen_for_seats()`. These updates
essentially flip the keyboard and pointer flags off and then back on in
the seat data, which indicates that new handlers need to be assigned to
the keyboard and pointer objects.
However, because one update is received for _each_ flag being toggled,
this means that the listener is fired twice with `has_keyboard` set to
true, which means that two keyboard handlers end up being installed.
Users then experience each keypress being delivered twice to the
terminal.
This commit adds a map to track the keyboard object that has been
assigned on each seat, thereby preventing duplicate assignments and (by
extension) duplicate keypresses being registered. This logic is
essentially the same as what's used in the `kbd_input` example in SCTK,
which doesn't have this issue.
Something similar is required for pointer handling, which also breaks
after switching to another virtual console and back into Wayland, but I
was scared off by the TODO in the `listen_for_seats` callback and didn't
investigate this further.
On Windows in FRA layout, `^^SPACE` results in `^^SPACE`, whereas
on Linux it results in `^SPACE`. We were doing the latter instead
of the former.
Let's just be consistent with other windows apps.
closes: #1729closes: #1730
* Detect mouse leaving the window
* Implement leave
* Use new API
* Fix mouse leave
* Fix mouse leave on Wayland
* Mouse leave on X11
* Detect mouse leaving window on macOS
* Fix example
refs: #1434
This might "break" eg: pasting from apps that just use ATOM_STRING
and that happen to have utf-8 compatible text.
Ideally the get_text_property interface would expose the actual
text encoding in the returned data and allow the application to
"do stuff" with it.
refs: https://github.com/meh/rust-xcb-util/issues/21
Resolves a little bit of the awkward duplication of color types
between some of the crates by factoring them a little bit better.
This is prep for allowing specifying alpha for some colors
in the config.
This puts to final rest #478, wherein ligatured glyphs that span
cells would render portions of the glyph with the wrong fg color,
where wrong was usually the bg color and cause the glyph to turn
invisible when cursoring through the ligature.
The approach used here is to divide the glyph into 7 discrete strips
where each strip either intersects with the cursor, the selection, or
neither. That allows us to render each strip with the appropriate
foreground color.
This change simplifies some of the logic and allows some other code
to be removed, so that feels good!
As is tradition with these renderer changes, there's a good chance that
I overlooked something in testing and that the metrics or alignment
might be slightly off for some font/text combo. Let's see how this
goes!
refs: #784
refs: #478
refs: #1617
This allows unicode_version to be respected again when rendering.
The updated emoji-presentation.sh script now highlights this slightly
better by putting `.` characters after the emoji; unicode version 14
emoji presentation will show the `.` in the 3rd column, while earlier
versions will show it in the 2nd column for glyphs that are sensitive
to the version.
refs: #1607
refs: #1563
This action causes the active workspace for the gui to change.
If the name is omitted a random name will be generated.
If the workspace doesn't exist, it will be be created.
The optional spawn parameter can be used to launch a specific
program into the new workspace; if omitted, the default prog
will be used.
The gui only supports a single active workspace. Switching workspaces
will repurpose existing gui windows and re-assign them to windows
in the new workspace, adjusting their size to fit those windows,
spawning new windows or closing unused windows as required.
The gui now exits when there are no panes in the active workspace,
rather than no panes at all.
refs: #1531
When a dead key is composing, we gave no information about what was
composing. Contrast with Windows and macOS where we show the first
key in the composition as part of that state.
This commit makes an attempt to populate equivalent information.
It's a bit more complex with the xkeyboard stuff as there can be
multiple combining sequences and there's no guarantee that we can
show a meaningful label.
We try our best for the common case of a single dead key, and have
a probably reasonable fall back for other cases where we don't
other get that information.
This allows removing DeadKeyStatus::Holding.
lalt-` is technically a dead key combo, so we entered dead key
processing, then realized that
`send_composed_key_when_left_alt_is_pressed == false` and that
we should ignore the dead-key-ness of the combo, but returned
a composed result, which had the modifiers discarded.
The correct way to handle this is to signal that it wasn't
dead after all and to allow the main flow to build the KeyEvent
as normal.
We need 100% of the info for it to work correctly, so this commit:
* Exposes the keyboard encoding mode via the Pane trait
* Adds the scan code to the RawKeyEvent
* Has the GUI perform the encoding if the keyboard is set that way
* Removes the basic encoder from termwiz in favor of the gui level one
The net result is that we bypass the Pane::key_up/Pane::key_down methods
in almost all cases when the encoding mode is set to win32-input-mode.
There is now a config option: allow_win32_input_mode that can be
used to prevent using this mode.
refs: #1509
This commit causes the terminal to emit win32-input-mode encoded key up
and down events for a limited subset of keys When win32-input-mode is
enabled.
We limit them to keys where we know the VK key code equivalent,
and where those keys are either not representable (eg: modifier
only key events), or may generate ambiguous output (eg: CTRL-SPACE
in different keyboard layouts).
However, in my experiments, modifier only key presses confuse powershell
and cause it to emit `@`, so I've disabled that in the code for now.
refs: https://github.com/wez/wezterm/issues/318
refs: https://github.com/wez/wezterm/issues/1509
refs: https://github.com/wez/wezterm/issues/1510
When we translate a dead key, send the composed event immediately
and don't try to route the current key press via the IME.
Improve rendering when in the composing state: overlay the composing
text at the cursor position to show what the composing text would
look like, even though it hasn't been committed to the input stream
yet.
refs: https://github.com/wez/wezterm/issues/1504
For Korean text input, pressing SHIFT and then typing in certain
keys begins a composition sequence. Our logic for when to route
via the IME got so distracted by ALT that it didn't consider SHIFT
and didn't send this sequence to the IME, so we'd fail to compose
those sequences.
While poking at this, I realized that we should treat this composition
similarly to dead keys, in that we can signal the term window to
highlight the cursor color and report that status.
There's some further work to do: the composing text should be rendered
by us. So far our IME integration assumes that the IME itself will
render over the top of our window, but for this particular input
it doesn't do that.
refs: https://github.com/wez/wezterm/issues/1504
Since we now have RawKeyEvent and a sane way to indicate handling,
we don't need these any more, and it simplifies key dispatch to
remove them.
refs: #1483
Pass down whether we are in a live resize to the gui layer, so that
we don't incorrectly assume that the scale has changed, and fight
with the window manager.
Built this on my mac: will need to fixup for windows and linux.
refs: https://github.com/wez/wezterm/issues/1491
This moves the event dispatching into the keyboard processor,
which will allow for the processor to skip feeding an event
into the dead key/composition stuff if a key assignment is
handled.
It doesn't actually do that bit yet though, as the wayland
key repeat processing was a bit more involved and I wanted
to constrain the scope of this commit.
refs: #877
on macos only (for now), we generate a RawKeyEvent prior to
dead key or IME composition and route it to the window to give it
a chance to handle the event.
RawKeyEvent handling is scoped only to key assignments, not generating
input for the terminal.
A raw key event can be marked as handled to prevent moving on to
performing composition and generating cooked key input.
refs: https://github.com/wez/wezterm/issues/877
Previously, we'd take a couple of guesses at how to map the key
to a utf8 value, but! the keyboard state has a method that can tell
us what to use.
This is important in non-latin keymaps where, for example, the `c`
key generates cyrillic small letter es and we'd end up sending
CTRL + that through to the terminal when CTRL is held down.
If we get the utf8 string from the keyboard layer then we get
CTRL+c instead, and that is what we want.
refs: https://github.com/wez/wezterm/issues/678
I saw this when the IME was active:
```
2021-12-31 00:46:26.941 wezterm-gui[46160:16665949] -[NSConcreteMutableAttributedString UTF8String]: unrecognized selector sent to instance 0x600002b24180
```
the issue is that some of the window callbacks can receive either
NSString or NSAttributedString. The latter doesn't have a UTF8String
method, but does have a string property that returns an NSString
that can be used instead.
Certain keys are "handled" by the IME through it generating a "noop"
command.
That's not super useful for us, so this commit detects the noop case
and then treats it as though the IME didn't handle the input event.
While implementing the above fix, I realized that the same technique
could be used more generally to return processing to our main input
handling for the various selectors that we do recognize: we were
essentially inferring the original key combinations based on the
selector which is not scalable and potentially lossy.
We can't capture CTRL-ESC this same way, as that key combination
is magical and is routed to the callback without generating any
key events.
refs: https://github.com/wez/wezterm/issues/615
refs: https://github.com/wez/wezterm/issues/975
refs: https://github.com/wez/wezterm/pull/1410
This commit adds a CSS box model inspired element / layout
facility, and replaces the hand implemented fancy tab bar
element render.
This makes the code for fancy tab bar much easier to read
and update.
The right status area now expands to the full height of the
tab bar area, and uses a line height of 2.0, which makes
it line up nicely in the tab bar.
On Windows, both EGL and MESA render modes were too dark.
After a bit of hunting around what I found made EGL and MESA
consistent with my default nVidia GPL rendering was:
* Tell glium that our shader outputs srgb
* Add explicit gamma conversion from linear to srgb in the shader
AFAICT, that shouldn't be required, but it seems as though something
deep in glium really wants to apply some kind of gamma conversion,
and it seems to select the wrong kind unless we set things explicitly
to SRGB.
There are some people complaining about this in
https://github.com/glium/glium/issues/1615.
I actually tried to move entirely aware from the glium srgbtexture2d
type in the hope of having explicit control over the gamma, but the
issue is in what happens to the outputs rather than the inputs.
It appears to me as though the text now looks slightly less
intense, so I think this may be what we need for the gamma issue
in https://github.com/wez/wezterm/issues/544 and potentially
also https://github.com/wez/wezterm/issues/1025
refs: https://github.com/wez/wezterm/issues/1373
In the worst case this can cause badly implemented desktop components like panels
to constantly rerender and waste 100% CPU (that's how I found a bug in mine :D)
when anything is constantly updating in the terminal (like viewing a log stream).
When using client-side decorations, we can now skip rendering
the header/title bar.
If you've set NONE decorations, then wezterm will configure
the window that way, but that is only respected when the window
is created, as weston crashed when I tried to change this in
a window config reload event.
The wayland frame now also observes config change events,
so frame color adjustments should now take effect without
restarting.
refs: #1077
Changing surface configuration flags *to* default would never be applied.
This was uncovered when implementing increment step resize: it would stop
working after *one* maximization.
The wl_keyboard definition does not define that the incoming fd is always at seek position 0.
In fact, the spec says the fd "can be memory-mapped" and that's it.
And e.g. smithay client-toolkit uses mmap, but we don't :/
Use pread() to read from zero.
This commit introduces a mechanism for specifying resize increments
for a window, and then arranges for the termwindow to set those
to match the current font cell metrics.
This should help to avoid cases where there is excess padding pixels
resulting from the window being slightly larger than computed number
of cells and the font metrics.
Not sure what happened here: presumably a borked merge or something
similar, but this commit allows `window:get_appearance` to return
the actual appearance value on X11.
Even though this plumbs the call through to Wayland, Wayland doesn't
provide an equivalent concept so still always return Light, as is
mentioned on our docs.
closes: #1098
* Trigger a paint immediately from invalidate if not throttled
* Otherwise defer the other events until we're about to sleep for xcb
events, which should maximize the coalesce around resize/expose events
refs: #1051
The thesis is that some WM's might send a whole bunch of events
that cause us to over draw/over resize.
I'm not convinced that this is a righteous change, but it can't
hurt to try.
refs: #1051
Some users mentioned that there's a lag after selecting text
on X11. Tracing through, I saw that the we invalidate the window
quite a lot when dragging the selection, and the buffer swap could
delay for several ms each time while waiting for the vsync.
Rather than blocking the GUI thread and making it bog down, this
commit adopts a technique similar to the recent Wayland frame sync
changes, except that we enforce a minimum of 33ms between frames
in our own scheduler to avoid blocking for several ms at a time.
This seems to do a decent job of balancing responsiveness during
selection with updating the display, and keeps the buffer swap
delay down to microseconds.
We may want to make this delay configurable.
* WIP: IME support for X11
* Handle text generated by IME.
* Set IME position according to the cursor position.
* Improve IME position handling.
Geometry as well as window focus changes are now handled.
* Dispatch IME strings like it's done on windows.
* Make sure not to silently drop IME errors.
* Respect `use_ime` configuration.
* Add xcb-util as dependency.
* Only update IME position if necessary.
* Formatting.
* Update xcb-imdkit-rs.
* Set IME position under the start of the cursor.
This seems to be the way it is commonly done among gui frameworks.
(Tested with Firefox for GTK and Konsole for QT).
* Update xcb-imdkit-rs.
* Handle systems only providing libxcb-util0-dev.
* Add libxcb to freebsd dependencies.
Required by xcb-imdkit-rs.
* Update xcb-imdkit-rs.
* Try to use more recent gcc on centos7.
* More recent C++ compiler on centos7 as well.
* Also setup correct env on centos7 for tests.
This makes the comparison in https://github.com/wez/wezterm/issues/544
work for me on mac, linux (x11, wayland) and also on Windows but
only using WGL.
It looks like we can use the proper colorspace on all targets
except for ANGLE EGL. For whatever reason, the combination of
glium and ANGLE EGL on windows over-gamma corrects.
AFAICT, the framebuffer and perhaps the surfaces it creates
don't indicate srgb support, and whatever combination of status
they return tickles glium's srgb stuff the wrong way.
I think the "solution" is just to directly use WGL by default.
EGL was on by default because it tended to be more survivable
when graphics card drivers were updated, but the last couple
of times I updated mine it still killed wezterm anyway.
refs: #544
This commit annotates fonts with a boolean that indicates whether
we think it contains glyphs with emoji presentation, and then
passes the cluster.presentation field down to the shaper.
If the presentation doesn't match the current font in the fallback,
then it will be skipped until we exhaust its options.
`wezterm ls-fonts` also shows whether we think a font has emoji
presentation.
refs: #997
This replaces the slightly gnarly subpixel enabled blending in the
shader with Dual Source Blending, which is a technique where the
fragment shader can specify both the primary color (RGBA) as well
as an additional per-channel mask that can be used to alpha blend
with the destination.
This enables artifact-free alpha blending when used together
with a transparent window background.
refs: https://github.com/wez/wezterm/issues/932
This commit ties our invalidation requests together with the surface
frame callback request so that we can throttle our frame rate if
we're busy, but still remain largely idle if we're not changing
any content.
refs: https://github.com/wez/wezterm/issues/884
https://emersion.fr/blog/2018/wayland-rendering-loop/ suggests that
it is best practice to do this so that the compositor doesn't
cause an application to block forever if the window is moved to
an off-screen state.
That article also suggests using the frame callback to schedule
paints; this commit has that code included, but I've left it
disabled because it causes us to repaint at the monitor refresh
rate which is often more frequently than we would anyway;
in our problem scenario we're painting once per second and we
just want to make sure that that doesn't block.
So hopefully this makes the sway/scratchpad experience better!
refs: https://github.com/wez/wezterm/issues/884
WindowState is a bitfield that can represent maximized, full screen
and hidden window states.
WindowState is passed along with resize events, improving on the
prior basic is_full_screen boolean by representing the other states.
Notably, WindowState::MAXIMIZED is used to represent a state where
the window's size is constrained by some window environment function;
it could be due to the window being maximized in either or both the
vertical or horizontal directions, or by the window being in a tiled
state on any edge.
When the window is MAXIMIZED, wezterm will behave as though
`adjust_window_size_when_changing_font_size = false` because it knows
that it cannot adjust the window size in that state.
This potentially helps with #695, depending on whether the window
manager propagates this state information to wezterm. Gnome/mutter
does a good job at this with both X11 and Wayland, but I couldn't get
sway to report these states and I don't know of any other tiling wm
that I can easily install and use on fedora, so there's a question
mark around that.
Switch to using `xterm` rather than `text` for the name of the
xterm style I-beam mouse cursor, as that appears to be more
compatible across themes; the gnome theme aliases text -> xterm
via a symlink.
Improve error diagnostics in the case that no cursor is found.
refs: https://github.com/wez/wezterm/issues/532
