With this commit, we now survive a reinstall or upgrade of the nvidia
drivers on my Windows sytem without crashing.
This commit allows notifying the application of the context loss
so the application can either try to reinit opengl or open a new
window as a replacement and init opengl there.
I've not had success at reinitializing opengl after a driver upgrade;
it seems to be persistently stuck in a state where it fails to allocate
a vertex buffer.
SO, the state we have now is that we try to reinit opengl on a new
window, and if that fails, leave it set to the software renderer.
This isn't a perfect UX, but it is better than terminating!
refs: https://github.com/wez/wezterm/issues/156
I don't have a great way to test this on those platforms,
so other than compiling and running and verifying that things
work normally, I'm not sure if this is sufficient!
This commit allows distinguishing between left and right alt
modifiers at the window layer. So far only macos provides
this additional information.
Expand the logic that decides whether Alt should emit the
composed key or act as the raw key with the Alt modifier flag
set so that we can set that behavior separately for the left
and right modifiers on systems that support it, and use the
existing config for systems that don't support it.
The default settings for these flags is that Left Alt will
send the uncomposed key + Alt modifier while the Right Alt
will behave more like AltGr (which is typically on the RHS
of the keyboard) and send the composed key.
This gives more flexibility by default and hopefully matches
expectations a bit better.
refs: https://github.com/wez/wezterm/issues/216
The goal at the window layer is to preserve enough useful information
for other layers. In this specific circumstance on macos we'd like
to be able know both that eg: ALT-1 was pressed and that ALT-1 composes
to a different unmodified sequence and then allow the user's key
binding assignment to potentially match on both.
We sort of allowed for this, but didn't separate out the modifier keys.
This commit adds a `raw_modifiers` concept to the underlying event
struct so that we can carry both the raw key and modifier information
as well as the composed key and modifier information.
In the scenario above, we want the raw key/modifier tuple to be ALT-1
but the composed key/modifier to be eg: unmodified `¡` in my english
keymap.
refs: https://github.com/wez/wezterm/issues/158
Adds some detection to see if the active keyboard layout has
AltGr, and if so, adjust our key mapping logic to accomodate it.
With this change, when using an ENG layout, I can use either left
or right alt-b/alt-f to move through words in wsl. When I switch
to DEU my left alt is still alt and my right alt causes the
Windows On-Screen keyboard to act as though AltGr is pressed.
I can then use the On-Screen keyboard to press the `<` key which
is to the left of the `Z` key on a German layout and have it produce
the `|` character.
refs: https://github.com/wez/wezterm/issues/185
We switched to using clipboard because of problems under XWayland.
These days we have much better native Wayland support and folks
should use that.
Test plan:
In one window:
```
echo "clipboard" | xclip -i -selection clipboard; echo "primary" | xclip -i -selection primary;
```
then start `wezterm` and press shfit-insert.
Prior to this change we'd always print `clipboard`.
After this change we'll print `primary`.
However, if you run:
```
WEZTERM_X11_PREFER_CLIPBOARD_OVER_PRIMARY=1 wezterm
```
then we'll use the old `clipboard` behavior.
Teach the window layer about window icons and implement the
plumbing for this on X11.
For Wayland there is no direct way to specify the icon; instead
the application ID is used to locate an appropriate .desktop filename.
We set the app id from the classname but that didn't match the installed
name for our desktop file which is namespaced under my domain, so change
the window class to match that and enable the window icon on Wayland.
refs: https://github.com/wez/wezterm/issues/172#issuecomment-619938047
@kalgynirae showed me weirdly laggy behavior when moving the mouse
in front of his x11 window. My suspicion was that this is somehow
related to updating the mouse cursor glyph, and looking at this code
there were two things that might influence this:
* We weren't saving the newly applied cursor value, so we'd create
a new cursor every time the mouse moved (doh!)
* We'd create a new cursor id each time it changed, and then destroy it
(which isn't that bad, but if it contributes to lag, maybe it is?)
This commit addresses both of these by making a little cache map
from cursor type to cursor id.
I can't observe a difference on my system, so I wonder if this might
also be partially related to graphics drivers and hardware/software
cursors?
Hiding a window is implemented as miniaturizing the window, which
is typically shown with an animation of the window moving into the
dock.
This is not the same as the application-wide hide function in macOS;
that function hides the entire app with no animation. We don't use
that here because our Hide function is defined as a window operation
and not an application operation.
refs: https://github.com/wez/wezterm/issues/150
The opengl based render first clears the window to the background
color and then renders the cells over the top.
on macOS I noticed a weird lighter strip to the bottom and right of
the window and ran it down to the initial clear: our colors are SRGB
rather than plain RGB and the discrepancy from rendering SRGB as RGB
results in the color being made a brighter shade. This was less
noticeable for black backgrounds.
Remove a normalizing function that made assumptions based on the
keycaps that did not hold up when selecting Dvorak as an input
source. For example "CTRL-C" where `C` is the key with the C keycap
would send `CTRL-C` even when Dvorak was selected; it should send CTRL-J
in that layout.
I think with the other normalization that happens in the termwindow
layer we don't need this function any more.
The default values are 3 lines. With this change, scrolling speed now seems
similar to other programs like cmd.exe. Before this change it feels too slow.
I noticed my trackpoint or touchpad reports a lot of < 120 (WHEEL_DELTA) events.
They shouldn't be ignored.
Also https://docs.microsoft.com/en-us/windows/win32/inputdev/wm-mousewheel says:
> The wheel rotation will be a multiple of WHEEL_DELTA, which is set at 120.
> This is the threshold for action to be taken, and one such action (for
> example, scrolling one increment) should occur for each delta.
>
> The delta was set to 120 to allow Microsoft or other vendors to build
> finer-resolution wheels (a freely-rotating wheel with no notches) to send
> more messages per rotation, but with a smaller value in each message. To use
> this feature, you can either add the incoming delta values until WHEEL_DELTA
> is reached (so for a delta-rotation you get the same response), or scroll
> partial lines in response to the more frequent messages. You can also choose
> your scroll granularity and accumulate deltas until it is reached.
macos generates fractional distance values for the mouse wheel,
with one tick starting at 0.1. We were truncating this to a 0 row
move, which meant that you'd need to build up some acceleration to
move the rows when all you really wanted was a single tick.
This commit changes things so that we round up to at least 1.0 in this
situation.
The IME stuff on macos tends to swallow repeats for some keys.
Ugh. So this commit adds an option to disable the use of the IME.
Switching away from it effectively inverts the meanging of backspace
and delete (because our method is no longer called by the IME), so
we need to check for that and remap it. Ugh.
Ugh.
double clicks weren't registering correctly with the new selection
logic. Tell windows that we're doing all our own click counting
and simplify the logic.
Force using xcb-util 0.2.1 precisely because 0.2.2 pulls in a
conflicting major version of xcb (0.8 -> 0.9).
It's a non-trivial upgrade: the types around xkb are different
and features need to be specified in the manifest to enable compilation
of the things that we depend upon.
In addition, xkbdcommon, on which we depend, requires xcb 0.8 and
results in pulling in two conflicting versions of the crates.
It's a bit of a painful situation and will require some effort to
figure out how to upgrade the xcb dependency, when we're ready for that.
refs: https://github.com/meh/rust-xcb-util/issues/12
On x11 we'd get just a single line per scroll wheel tick.
Contrast with Wayland where we get multiple.
This config change makes us feel more snappy by default on X11.
I'd like to make this configurable using the live configuration
infra, but we don't currently have a way for this crate to see
that config, so this just changes the default to be "better".
refs: https://github.com/wez/wezterm/issues/92
This reverts commit bfa8d0c207,
which proved not to be needed because it was already covered
by the `KeyboardEvent::Enter` and `KeyboardEvent::Leave` handling.
On a Fedora 31 system running Wayland I noticed that wezterm and
the compositor were running pretty hot on their respective CPU
cores.
It turned out that we had a lot of
[Refresh](https://docs.rs/smithay-client-toolkit/0.6.4/smithay_client_toolkit/window/enum.Event.html#variant.Refresh)
events being generated and consumed. We were treating this as needing
a full paint so we'd be effectively continually running the opengl
paint cycle over and over.
The docs for that event say that it is intended to refresh the client
decorations so let's focus it towards that instead. This does bring
the CPU usage back down to intended levels.
I believe this hot CPU usage to be compositor-dependent: this is the
first I've seen of it out of 4 different Wayland environments!
1f81a064ed added support for noticing
that the dpi scale was not 1 on startup, but the timing of this
signal was different between the opengl and software renderers.
When using the software renderer, we'd end up computing a scaling
change with a pre-change pixel size but adjusted by a post-post
scaling factor, and that effectively caused the window to halve
its size on startup.
This commit improves things by also tracking the dpi in our locally
stored dimensions.
@sunshowers mentioned to me that the window appeared blurry on a hidpi
display on startup, and was fixed by changing focus in a tiling window
manager.
I could replicate this using weston with scaling set to 2; the issue was
that the initial scale factor change event wasn't fully propagated and
bubbled up as a resize event to the terminal layer.
This commit taps into the dpi change event and forces it to be
interpreted as a window configuration change, resulting in more crisp
text.
Adds the ability to specify `--font-shaper Allsorts` and use that
for metrics and shaping.
It is sufficient to expand things like ligatures, but there's something
slightly off about how the metrics are computed and they differ slightly
from the freetype renderer, which leads to some artifacts when rendering
with opengl.
One of my tests is to `grep message src/main.rs` to pull out the line
that has a selection of emoji. The heart emoji is missing from that
line currently.
Refs: https://github.com/wez/wezterm/issues/66
I noticed that we were relatively undersized for newly created
windows; there were two problems:
1. We weren't propagating the old rows and cols counts through
to the speculative resize.
2. The speculative resize wasn't implemented on wayland, and
needs a surprising amout of work to actually make the resize
take effect.
This was honestly a PITA because of its complexity. The `clipboard`
crate (now dropped as a dep) didn't support wayland, so I looked at
the `smithay-clipboard` crate, which caused all of my input to become
laggy just by enabling it--even without actually copying or pasting!
Both of those crates try to hide a number of details of working with
the clipboard from the embedding application, but that works against
our window crate implementation, so I decided to integrate it into
the window crate using Futures so that the underlying IPC timing and
potential for the peer to flake out are not completely hidden.
This first commit removes the SystemClipboard type from wezterm
and instead bridges the window crate clipboard to the term crate
Clipboard concept.
The clipboard must be associated with a window in order to function
at all on Wayland, to we place the get/set operations in WindowOps.
This commit effectively breaks the keyboard on the other window
environments; will fix those up in follow on commits.
This is a pretty gross and coarse "smash them together" commit.
There is some redundancy between the two connection and window
impls that I'd like to unify later, but this lets us build with
support for both systems for now.
The future won't ever complete if you don't connect the waker
from the context!
Prove this out by making the windowops functions async and
verifying them in the async example
I introduced this issue with the recent rate limiting changes. If we
generated sufficient events to fill the pipe buffer and trigger an
EAGAIN on the write side of the pipe, we'd end up in a state where epoll
would continually wake us up to deal with it, but because we gated
reading from the pipe on having entries in the queue we could decide
that there was nothing to do and leave the pipe unread.
This commit adjusts things so that we always try to read some data from
it.
This is OK because we're using the pipe to knock the main thread out of
a sleep rather than as the definitive count of events.
I'm seeing occasional 100% cpu usage on my linux system and I'm
not sure if its just because I'm running a stale binary.
I added this (commented out in this commit, but live on my local
system) debug print to help understand it.
The `SpawnQueue::run_impl` would loop until it had exhausted
all queued items. This prevents returning to the main loop
and resulted in the UI hanging while eg: `yes` was running,
and could also block accepting keyboard input, which is
pretty bad.
In addition, the queue implementation could fill up a pipe
and block the write side while it held a lock, which in
turn would prevent the read side from making room for the
write to succeed!
This commit changes the behavior on linux to change the wakeup
behavior of the queue from having a 1:1 relationship between
enqueue:wakeup to n:m where n and m are both >= 1. This is
sufficient to wake a sleeping gui thread. The gui thread
can then pop and process a single item at a time, interleaved
with dispatching the gui events.
The result is a bit more responsive, however, there is no
backpressure from the gui to the read side, so if the read
side is eating 2MB/s of data and the GUI side is processing
less than this, then an interrupt signal may still take a
few seconds to take effect.
I have mixed feelings about adding backpressure, because
I'm not sure that it is worth actually rendering all of
the parsed output text when there is a lot of it.
I need to follow up and verify these changes on macOS
and Windows too.
Refs: https://github.com/wez/wezterm/issues/65
The compiler emitted `ud2` right around this code, effectively
breaking wezterm on startup.
In talking this through with @dtolnay, the definition of the
structs in the core_foundation crate makes it undefined behavior
to pass a null pointer to its fields, despite that being a valid
and documented way to use the struct.
This commit works around this by defining our own local versions
of the types and functions with the safe signature.
I'll follow up with the owners of the core_foundation crate
to submit an equivalent patch upstream.
we were running it immediately which is too soon: the empty
mux check would fire before some of the scheduled jobs would
have run and registered tabs/windows.
on mac the `Delete` key is really `Backspace` and should generate the
`BS` sequence.
`Fn-Delete` is equivalent to the `Delete` key on other keyboards and
should generate the `DEL` sequence.
BS maps to deleteBackward
DEL maps to deleteForward
heads up to @fanzeyi: this partially reverses 8c26b77057
The NSEvent::charactersIgnoringModifiers method ignores modifiers
except for shift, which is unfortunate because it produces eg: `!`
instead of `1`.
This commit adds a mapping from the underlying `keyCode` to the
corresponding letter position.
This diff adds some plumbing to track the `raw_key` in the KeyEvent;
this is the key prior to composing or eg: mapping dead keys.
With that field in place, we can teach the termwindow layer to attempt
looking up that key mapping from the user defined key bindings.
If we get a match then we can stop further key processing.
Rather than \n and bs these need to be \r and del respectively otherwise
we can end up triggering the wrong ctrl based key mappings in a remote
tmux session.
The front-end was treating both \r and \n as Enter and passing
that through to the terminal.
To verify behavior, pay attention to your termios configuration:
```
$ stty -icrnl
$ od -c
<CTRL-J><CTRL-D>
0000000 \n
0000001
$ od -c
<CTRL-M><CTRL-D><Enter>
0000000 \r \n
0000002
```
Closes https://github.com/wez/wezterm/issues/56
Similar to the windows IME support, the placement needs refinement, but
this is sufficient for pinyin input and insertion of emoji via the emoji
palette.
This isn't perfect, but is sufficient to allow using the IME to enter
eg: the heart emoji with cmd.exe.
We have some issues locating and rendering chinese characters that
make it difficult to prove/disprove that the IME is working 100%
because we just can't see the glyphs.
In addition, there appears to be something a bit wonky with conpty and
emoji. If we use eg: `wezterm ssh HOST` to log in to a remote system,
and use the IME to pick eg: the pig face emoji, this renders correctly.
In that scenario we don't use conpty at all.
The IME window is always placed in the top left corner of the window
at the moment, which isn't great, but is better than the system default
which is outside of the window. I need to introduce a way to set the
IME position in the window layer so that the front end gui can set it
to the current cursor position.
