This commit refines bidi property handling:
* experimental_bidi has been split into two new configuration settings;
`bidi_enabled` (which controls whether the terminal performs implicit
bidi processing) and `bidi_direction` which specifies the base
direction and whether auto detection is enabled.
* The `Line` type can now store those bidi properties (they are actually
split across 3 bits representing enabled, auto-detection and
direction)
* The terminal now has a concept of active bidi properties and default
bidi properties
* The default properties are pulled from the wezterm configuration
* active bidi properties are potentially set via escape sequences,
BDSM (which sets bidi_enabled) and SCP (which sets bidi_direction).
We don't support the 2501 temporary dec private mode suggested by
the BIDI recommendation doc at this time.
* When creating new `Line`'s or clearing from the start of a `Line`, the
effective bidi properties are computed (from the active props,
falling back to default propr) and applied to the `Line`.
* When rendering the line, we now look at its bidi properties instead
of just the global config.
The default bidi properties are `bidi_enabled: false` and
`bidi_direction: LeftToRight` which corresponds to the typical
bidi-unaware mode of most terminals.
It is possible to live reload the config to change the effective
defaults, but note that they apply, by design, to new lines being
processed through the terminal. That means existing output is
left unaffected by a config reload, but subsequently printed lines
will respect it. Pressing CTRL-L or otherwise contriving to have
the running application refresh its display should cause the
refreshed display to update and apply the new bidi mode.
refs: #784
This setting now allows specifying what the canonical format is;
previously it was a boolean that meant "don't change anything"
if false, and rewrite to CRLF if true.
It's now an enum with None, CR, LF, and CRLF variants that express
more control.
The config accepts true (maps to CRLF) and false (maps to None)
for backwards compatibility.
The default behavior is unchanged by this commit, however, I did
uncover a bug in the canonicalizer for inputs like `\r\r\n`.
refs: #1575
This commit enables the following config to work for local (not mux yet!)
panes:
```lua
local wezterm = require 'wezterm'
wezterm.on("format-tab-title", function(tab, tabs, panes, config, hover, max_width)
if tab.is_active then
return {
{Background={Color="blue"}},
{Text=" " .. tab.active_pane.title .. " "},
}
end
local has_unseen_output = false
for _, pane in ipairs(tab.panes) do
if pane.has_unseen_output then
has_unseen_output = true
break;
end
end
if has_unseen_output then
return {
{Background={Color="Orange"}},
{Text=" " .. tab.active_pane.title .. " "},
}
end
return tab.active_pane.title
end)
return {
}
```
refs: https://github.com/wez/wezterm/discussions/796
This commit decomposes the main get_semantic_zones method into two
parts:
* A per-line portion, where the line ranges are cached (invalidated on
change)
* The overall screen portion, where the line ranges are merged
This changes the overall complexity of computing zones from
O(width * scrollback-height)
To an incremental:
O((width * number of changed lines since last query) + scrollback-height)
You can see some samples of elapsed time below; those show the times for
running both the old and the new implementation on the same data. The
number of lines/zones in the scrollback increases with each call and you
can see that the new implementation is a bit faster anyway at low
volumes but is significantly faster as the number of lines/zones
increases, because the amount of work is reduced.
```
get_semantic_zones: 71.708µs
get_semantic_zones_new: 59.041µs
get_semantic_zones: 71.166µs
get_semantic_zones_new: 9.166µs
get_semantic_zones: 44.291µs
get_semantic_zones_new: 4.208µs
get_semantic_zones: 69.791µs
get_semantic_zones_new: 10.291µs
get_semantic_zones: 59.375µs
get_semantic_zones_new: 7.958µs
get_semantic_zones: 52.5µs
get_semantic_zones_new: 4.5µs
get_semantic_zones: 91.791µs
get_semantic_zones_new: 20.916µs
get_semantic_zones: 229.916µs
get_semantic_zones_new: 109.208µs
get_semantic_zones: 224.125µs
get_semantic_zones_new: 15.208µs
get_semantic_zones: 291.791µs
get_semantic_zones_new: 11.833µs
get_semantic_zones: 238.875µs
get_semantic_zones_new: 12.625µs
get_semantic_zones: 468.458µs
get_semantic_zones_new: 126.583µs
get_semantic_zones: 460.5µs
get_semantic_zones_new: 25.666µs
get_semantic_zones: 358.291µs
get_semantic_zones_new: 19.541µs
get_semantic_zones: 436.833µs
get_semantic_zones_new: 17.875µs
get_semantic_zones: 313.166µs
get_semantic_zones_new: 15.25µs
get_semantic_zones: 333.958µs
get_semantic_zones_new: 16.541µs
get_semantic_zones: 364.666µs
get_semantic_zones_new: 14.041µs
```
* #1457 Initial commit compiles but doesn't yet work
* #1457 Fix cell offsets
* #1457 refactor, ClickPosition
* fix nits
* #1457 filter per-pixel motion when not in SGR-Pixels mode
* Much cleaner match condition for filtering mouse events based on encoding protocol
It's a little ambiguous whether we should cancel the mode when moving
the cursor explicitly; I opted to do it when we move it due to newline
processing, or when its y position is changed.
refs: #1539
user vars were stubbed out. This commit adds storage for them
in the mux client and adds a new notification that publishes each
var as it is changed. That differential stream is applied to the
storage in the mux client when it is received.
```lua
local wezterm = require 'wezterm'
wezterm.on("update-right-status", function(window, pane)
local woot = pane:get_user_vars().woot
window:set_right_status(tostring(woot))
end);
return {
unix_domains = {
{name="unix"},
},
}
```
then running:
* `wezterm connect unix`
* in that session: `printf "\033]1337;SetUserVar=%s=%s\007" woot `echo -n nice | base64``
causes `nice` to show in the status area.
refs: #1528
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
Nothing generates them right now, and the mux client has no
way to represent them on the wire.
I'm considering constraining them to just win32 for now.
refs: https://github.com/wez/wezterm/issues/1509
This is a baby step that formalizes the different encoding schemes into
an enum, and hooks up the decset sequence for win32-input-mode.
It doesn't change any of the actual encoding at this time.
refs: #1509
Previously, we would implicitly set it to the special SEQ_ZERO
value, but since that value always flags the row as changed,
it causes some over-invalidation issues downstream in wezterm.
This commit makes that parameter required, so that the code that
is creating a new Line always passes down the seqno from that event.
refs: #1472
ConPTY emits a sequence that sets the title to the name of the
program that is initially launched into it.
This commit tries to ignore that sequence in that circumstance,
so that the logic in b5d156c282
can more dynamically set the tab title.
Poking around at an issue, and thinking that some more context
might be nice.
Haven't managed to reproduce the issue so far though :-/
refs: https://github.com/wez/wezterm/issues/1156
Not 100% sure why this only really manifested on Windows, but
the symptoms were:
* Run powershell in a tab
* Run `dir`
* Hit enter a couple of times to show a couple of prompts
* Try using the mouse to select across the prompt boundaries
The selection would get invalidated crossing the boundaries.
I traced this down to the lines around those regions having
SEQ_ZERO as their sequence, so this commit ensures that lines
that are created as part of scrolling the screen are correctly
tagged with the current seqno from the terminal display.
Why only windows? Not totally sure; perhaps it is related to
something funky happening in the conpty layer and sending us
unusual escapes (eg: scroll margins?)
This isn't ideal, as we're discarding information, but in #1422
where the problem codepoint is a unicode bidi control, we can't and
don't use that information anyway.
We'll need to figure out how to incorporate that when we get to it.
For now, this makes the presentation work correctly.
refs: #1422
permits iTerm2 images to be drawn anywhere on screen without
scrolling the cursor, including the bottom row.
Also included is a check in fcwrap.rs to_range_set(), without which
was causing a panic at runtime due to subtraction from unsigned
leading to overflow.
This helps us correctly set the size of the image cell
for the case where we have a partial cell at the right/bottom
edge of an image being mapped across cells.
refs: #1270
Adds some plumbing to allow the GUI to implement a download handler
and connect that up for iterm2 image/file transfers that have their
inline property set to false.
Previously we'd just log an error.
Now we will by default download the file to the user's download
directory.
This behavior can be turned off via the new `allow_download_protocols`
configuration setting.
File transfers can be initiated on a remote host via the
https://iterm2.com/utilities/it2dl script.
When the download completes, a toast notification is shown that will
open the file when clicked.
refs: https://github.com/wez/wezterm/discussions/1450
The texture coordinates into the source image weren't quite right;
previously we'd do this math:
num_cells = (image_size / cell_size).ceil()
delta = num_cells / image_size
that would result in the image being stretched to fit across the rounded
up number of cells, leading to a distored image.
This commit changes the delta calculation to be based on the remaining
number of pixels in a given dimension relative to the cell size.
refs: #1300
refs: #1270
While the description at DEC STD-070 04-31 does not mention Left Right
Margin Mode (it does mention the left and right margins), the code at
04-34 sets it to FIXED (the reset state, the set state is SETABLE).
From esctest:
DECSETTests.test_DECSET_DECLRMM_ModeResetByDECSTR
As promised in the previous commit, this one implements an escape
sequence to control the unicode version.
Unknown to me in the previous commit, iTerm2 already defines such
an escape sequence, so we simply implement it here with the same
semantics.
refs: #1231
refs: #997
This is a fairly far-reaching commit. The idea is:
* Introduce a unicode_version config that specifies the default level
of unicode conformance for each newly created Terminal (each Pane)
* The unicode_version is passed down to the `grapheme_column_width`
function which interprets the width based on the version
* `Cell` records the width so that later calculations don't need to
know the unicode version
In a subsequent diff, I will introduce an escape sequence that allows
setting/pushing/popping the unicode version so that it can be overridden
via eg: a shell alias prior to launching an application that uses a
different version of unicode from the default.
This approach allows output from multiple applications with differing
understanding of unicode to coexist on the same screen a little more
sanely.
Note that the default `unicode_version` is set to 9, which means that
emoji presentation selectors are now by-default ignored. This was
selected to better match the level of support in widely deployed
applications.
I expect to raise that default version in the future.
Also worth noting: there are a number of callers of
`unicode_column_width` in things like overlays and lua helper functions
that pass `None` for the unicode version: these will assume the latest
known-to-wezterm/termwiz version of unicode to be desired. If those
overlays do things with emoji presentation selectors, then there may be
some alignment artifacts. That can be tackled in a follow up commit.
refs: #1231
refs: #997
This was a bit of a PITA to run down; the essence of the problem
was that the shaper was returning an x_advance of 0 for U+3000,
which caused wezterm's shaping layer to elide that glyph.
I eventually tracked down the x_advance to be the result of
scaling by an x_scale of 0, which in turn is the result of
harfbuzz not knowing the font size.
The critical portion of this diff is the line that advises
harfbuzz that the font has changed after we've applied the
font size.
The rest is just stuff to make it easier to debug and verify.
This:
```
printf "x\u3000x."
```
Now correctly renders on screen as "x x".
fixes: #1161
Fast-clicking users generally expect to be able to rapidly do regular selections
or otherwise cancel double/triple/quad clicks, so significant mouse movement should end the streak.
Allowing tiny pixel movements to account for touchpads is necessary.
Fortunately, the position here is already in character grid cells, which provides enough margin for this.
Other code editors like gedit also seem to do this based on the character grid.
This will enable eg: a lua helper function to serialize keycodes to
assist in some key rebinding scenarios (see:
https://github.com/wez/wezterm/pull/1091#issuecomment-910940833 for the
gist of it) but also makes it a bit easier to write unit tests for key
encoding so that situations like those in #892 are potentially less
likely to occur in the future.
