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Fix some international keybindings (#2957)

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This adds primitive interaction with the IME system for keyboard
shortcuts in zed.

- Consult the IME functionality when handling keyboard shortcuts. This
allows you to bind to characters (like " on a Brazillian keybaord, or $
on a Czech keyboard) that aren't typed with an unmodified key.
([#1981](https://github.com/zed-industries/community/issues/1981))
([#1913](https://github.com/zed-industries/community/issues/1913))

Co-authored-with: Antonio Scandurra <me@as-cii.com>
This commit is contained in:
Conrad Irwin 2023-09-11 11:56:57 -06:00 committed by GitHub
commit 0c2bc6e553
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1 changed files with 34 additions and 1 deletions
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35
crates/gpui/src/platform/mac/window.rs
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@ -1006,7 +1006,40 @@ extern "C" fn handle_key_event(this: &Object, native_event: id, key_equivalent:
.flatten()
.is_some();
if !is_composing {
handled = callback(Event::KeyDown(event));
// if the IME has changed the key, we'll first emit an event with the character
// generated by the IME system; then fallback to the keystroke if that is not
// handled.
// cases that we have working:
// - " on a brazillian layout by typing <quote><space>
// - ctrl-` on a brazillian layout by typing <ctrl-`>
// - $ on a czech QWERTY layout by typing <alt-4>
// - 4 on a czech QWERTY layout by typing <shift-4>
// - ctrl-4 on a czech QWERTY layout by typing <ctrl-alt-4> (or <ctrl-shift-4>)
if ime_text.is_some() && ime_text.as_ref() != Some(&event.keystroke.key) {
let event_with_ime_text = KeyDownEvent {
is_held: false,
keystroke: Keystroke {
// we match ctrl because some use-cases need it.
// we don't match alt because it's often used to generate the optional character
// we don't match shift because we're not here with letters (usually)
// we don't match cmd/fn because they don't seem to use IME
ctrl: event.keystroke.ctrl,
alt: false,
shift: false,
cmd: false,
function: false,
key: ime_text.clone().unwrap(),
},
};
handled = callback(Event::KeyDown(event_with_ime_text));
}
if !handled {
// empty key happens when you type a deadkey in input composition.
// (e.g. on a brazillian keyboard typing quote is a deadkey)
if !event.keystroke.key.is_empty() {
handled = callback(Event::KeyDown(event));
}
}
}
if !handled {