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vim: Fix ctrl-u/ctrl-d

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They should work by exactly half a screen, and also move the cursor.
This commit is contained in:
Conrad Irwin 2023-09-26 14:49:08 -06:00
parent 342a00b89e
commit 8e1bbf32be
5 changed files with 122 additions and 21 deletions
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2
crates/editor/src/editor_tests.rs
View file

@ -1429,7 +1429,7 @@ async fn test_scroll_page_up_page_down(cx: &mut gpui::TestAppContext) {
assert_eq!(editor.snapshot(cx).scroll_position(), vec2f(0., 3.));
editor.scroll_screen(&ScrollAmount::Page(-0.5), cx);
assert_eq!(editor.snapshot(cx).scroll_position(), vec2f(0., 2.));
assert_eq!(editor.snapshot(cx).scroll_position(), vec2f(0., 1.));
editor.scroll_screen(&ScrollAmount::Page(0.5), cx);
assert_eq!(editor.snapshot(cx).scroll_position(), vec2f(0., 3.));
});

10
crates/editor/src/scroll/scroll_amount.rs
View file

@ -15,9 +15,13 @@ impl ScrollAmount {
Self::Line(count) => *count,
Self::Page(count) => editor
.visible_line_count()
// subtract one to leave an anchor line
// round towards zero (so page-up and page-down are symmetric)
.map(|l| (l * count).trunc() - count.signum())
.map(|mut l| {
// for full pages subtract one to leave an anchor line
if count.abs() == 1.0 {
l -= 1.0
}
(l * count).trunc()
})
.unwrap_or(0.),
}
}

88
crates/vim/src/normal/scroll.rs
View file

@ -15,19 +15,19 @@ actions!(
pub fn init(cx: &mut AppContext) {
cx.add_action(|_: &mut Workspace, _: &LineDown, cx| {
scroll(cx, |c| ScrollAmount::Line(c.unwrap_or(1.)))
scroll(cx, false, |c| ScrollAmount::Line(c.unwrap_or(1.)))
});
cx.add_action(|_: &mut Workspace, _: &LineUp, cx| {
scroll(cx, |c| ScrollAmount::Line(-c.unwrap_or(1.)))
scroll(cx, false, |c| ScrollAmount::Line(-c.unwrap_or(1.)))
});
cx.add_action(|_: &mut Workspace, _: &PageDown, cx| {
scroll(cx, |c| ScrollAmount::Page(c.unwrap_or(1.)))
scroll(cx, false, |c| ScrollAmount::Page(c.unwrap_or(1.)))
});
cx.add_action(|_: &mut Workspace, _: &PageUp, cx| {
scroll(cx, |c| ScrollAmount::Page(-c.unwrap_or(1.)))
scroll(cx, false, |c| ScrollAmount::Page(-c.unwrap_or(1.)))
});
cx.add_action(|_: &mut Workspace, _: &ScrollDown, cx| {
scroll(cx, |c| {
scroll(cx, true, |c| {
if let Some(c) = c {
ScrollAmount::Line(c)
} else {
@ -36,7 +36,7 @@ pub fn init(cx: &mut AppContext) {
})
});
cx.add_action(|_: &mut Workspace, _: &ScrollUp, cx| {
scroll(cx, |c| {
scroll(cx, true, |c| {
if let Some(c) = c {
ScrollAmount::Line(-c)
} else {
@ -46,15 +46,27 @@ pub fn init(cx: &mut AppContext) {
});
}
fn scroll(cx: &mut ViewContext<Workspace>, by: fn(c: Option<f32>) -> ScrollAmount) {
fn scroll(
cx: &mut ViewContext<Workspace>,
move_cursor: bool,
by: fn(c: Option<f32>) -> ScrollAmount,
) {
Vim::update(cx, |vim, cx| {
let amount = by(vim.take_count(cx).map(|c| c as f32));
vim.update_active_editor(cx, |editor, cx| scroll_editor(editor, &amount, cx));
vim.update_active_editor(cx, |editor, cx| {
scroll_editor(editor, move_cursor, &amount, cx)
});
})
}
fn scroll_editor(editor: &mut Editor, amount: &ScrollAmount, cx: &mut ViewContext<Editor>) {
fn scroll_editor(
editor: &mut Editor,
preserve_cursor_position: bool,
amount: &ScrollAmount,
cx: &mut ViewContext<Editor>,
) {
let should_move_cursor = editor.newest_selection_on_screen(cx).is_eq();
let old_top_anchor = editor.scroll_manager.anchor().anchor;
editor.scroll_screen(amount, cx);
if should_move_cursor {
@ -68,8 +80,14 @@ fn scroll_editor(editor: &mut Editor, amount: &ScrollAmount, cx: &mut ViewContex
editor.change_selections(None, cx, |s| {
s.move_with(|map, selection| {
let head = selection.head();
let mut head = selection.head();
let top = top_anchor.to_display_point(map);
if preserve_cursor_position {
let old_top = old_top_anchor.to_display_point(map);
let new_row = top.row() + selection.head().row() - old_top.row();
head = map.clip_point(DisplayPoint::new(new_row, head.column()), Bias::Left)
}
let min_row = top.row() + VERTICAL_SCROLL_MARGIN as u32;
let max_row = top.row() + visible_rows - VERTICAL_SCROLL_MARGIN as u32 - 1;
@ -92,7 +110,10 @@ fn scroll_editor(editor: &mut Editor, amount: &ScrollAmount, cx: &mut ViewContex
#[cfg(test)]
mod test {
use crate::{state::Mode, test::VimTestContext};
use crate::{
state::Mode,
test::{NeovimBackedTestContext, VimTestContext},
};
use gpui::geometry::vector::vec2f;
use indoc::indoc;
use language::Point;
@ -148,10 +169,10 @@ mod test {
});
cx.simulate_keystrokes(["ctrl-d"]);
cx.update_editor(|editor, cx| {
assert_eq!(editor.snapshot(cx).scroll_position(), vec2f(0., 2.0));
assert_eq!(editor.snapshot(cx).scroll_position(), vec2f(0., 3.0));
assert_eq!(
editor.selections.newest(cx).range(),
Point::new(5, 0)..Point::new(5, 0)
Point::new(6, 0)..Point::new(6, 0)
)
});
@ -162,11 +183,48 @@ mod test {
});
cx.simulate_keystrokes(["v", "ctrl-d"]);
cx.update_editor(|editor, cx| {
assert_eq!(editor.snapshot(cx).scroll_position(), vec2f(0., 2.0));
assert_eq!(editor.snapshot(cx).scroll_position(), vec2f(0., 3.0));
assert_eq!(
editor.selections.newest(cx).range(),
Point::new(0, 0)..Point::new(5, 1)
Point::new(0, 0)..Point::new(6, 1)
)
});
}
#[gpui::test]
async fn test_ctrl_d_u(cx: &mut gpui::TestAppContext) {
let mut cx = NeovimBackedTestContext::new(cx).await;
cx.set_scroll_height(10).await;
pub fn sample_text(rows: usize, cols: usize, start_char: char) -> String {
let mut text = String::new();
for row in 0..rows {
let c: char = (start_char as u32 + row as u32) as u8 as char;
let mut line = c.to_string().repeat(cols);
if row < rows - 1 {
line.push('\n');
}
text += &line;
}
text
}
let content = "ˇ".to_owned() + &sample_text(26, 2, 'a');
cx.set_shared_state(&content).await;
// skip over the scrolloff at the top
// test ctrl-d
cx.simulate_shared_keystrokes(["4", "j", "ctrl-d"]).await;
cx.assert_state_matches().await;
cx.simulate_shared_keystrokes(["ctrl-d"]).await;
cx.assert_state_matches().await;
cx.simulate_shared_keystrokes(["g", "g", "ctrl-d"]).await;
cx.assert_state_matches().await;
// test ctrl-u
cx.simulate_shared_keystrokes(["ctrl-u"]).await;
cx.assert_state_matches().await;
cx.simulate_shared_keystrokes(["ctrl-d", "ctrl-d", "4", "j", "ctrl-u", "ctrl-u"])
.await;
cx.assert_state_matches().await;
}
}

21
crates/vim/src/test/neovim_backed_test_context.rs
View file

@ -1,9 +1,10 @@
use editor::scroll::VERTICAL_SCROLL_MARGIN;
use indoc::indoc;
use settings::SettingsStore;
use std::ops::{Deref, DerefMut, Range};
use collections::{HashMap, HashSet};
use gpui::ContextHandle;
use gpui::{geometry::vector::vec2f, ContextHandle};
use language::{
language_settings::{AllLanguageSettings, SoftWrap},
OffsetRangeExt,
@ -132,7 +133,9 @@ impl<'a> NeovimBackedTestContext<'a> {
panic!("nvim doesn't support columns < 12")
}
self.neovim.set_option("wrap").await;
self.neovim.set_option("columns=12").await;
self.neovim
.set_option(&format!("columns={}", columns))
.await;
self.update(|cx| {
cx.update_global(|settings: &mut SettingsStore, cx| {
@ -144,6 +147,20 @@ impl<'a> NeovimBackedTestContext<'a> {
})
}
pub async fn set_scroll_height(&mut self, rows: u32) {
// match Zed's scrolling behavior
self.neovim
.set_option(&format!("scrolloff={}", VERTICAL_SCROLL_MARGIN))
.await;
// +2 to account for the vim command UI at the bottom.
self.neovim.set_option(&format!("lines={}", rows + 2)).await;
let window = self.window;
let line_height =
self.editor(|editor, cx| editor.style(cx).text.line_height(cx.font_cache()));
window.simulate_resize(vec2f(1000., (rows as f32) * line_height), &mut self.cx);
}
pub async fn set_neovim_option(&mut self, option: &str) {
self.neovim.set_option(option).await;
}

22
crates/vim/test_data/test_ctrl_d_u.json Normal file
View file

@ -0,0 +1,22 @@
{"SetOption":{"value":"scrolloff=3"}}
{"SetOption":{"value":"lines=12"}}
{"Put":{"state":"ˇaa\nbb\ncc\ndd\nee\nff\ngg\nhh\nii\njj\nkk\nll\nmm\nnn\noo\npp\nqq\nrr\nss\ntt\nuu\nvv\nww\nxx\nyy\nzz"}}
{"Key":"4"}
{"Key":"j"}
{"Key":"ctrl-d"}
{"Get":{"state":"aa\nbb\ncc\ndd\nee\nff\ngg\nhh\nii\nˇjj\nkk\nll\nmm\nnn\noo\npp\nqq\nrr\nss\ntt\nuu\nvv\nww\nxx\nyy\nzz","mode":"Normal"}}
{"Key":"ctrl-d"}
{"Get":{"state":"aa\nbb\ncc\ndd\nee\nff\ngg\nhh\nii\njj\nkk\nll\nmm\nnn\nˇoo\npp\nqq\nrr\nss\ntt\nuu\nvv\nww\nxx\nyy\nzz","mode":"Normal"}}
{"Key":"g"}
{"Key":"g"}
{"Key":"ctrl-d"}
{"Get":{"state":"aa\nbb\ncc\ndd\nee\nff\ngg\nhh\nˇii\njj\nkk\nll\nmm\nnn\noo\npp\nqq\nrr\nss\ntt\nuu\nvv\nww\nxx\nyy\nzz","mode":"Normal"}}
{"Key":"ctrl-u"}
{"Get":{"state":"aa\nbb\ncc\nˇdd\nee\nff\ngg\nhh\nii\njj\nkk\nll\nmm\nnn\noo\npp\nqq\nrr\nss\ntt\nuu\nvv\nww\nxx\nyy\nzz","mode":"Normal"}}
{"Key":"ctrl-d"}
{"Key":"ctrl-d"}
{"Key":"4"}
{"Key":"j"}
{"Key":"ctrl-u"}
{"Key":"ctrl-u"}
{"Get":{"state":"aa\nbb\ncc\ndd\nee\nff\ngg\nˇhh\nii\njj\nkk\nll\nmm\nnn\noo\npp\nqq\nrr\nss\ntt\nuu\nvv\nww\nxx\nyy\nzz","mode":"Normal"}}