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fix(compatibility): fix vim overwrite message and buffer clearing on exit (#98)

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* fix(compatibility): fix vim overwrite message and buffer clearing on exit

* style(formatting): make rustfmt happy
This commit is contained in:
Aram Drevekenin 2020-12-14 16:25:46 +01:00 committed by GitHub
parent 8589addde0
commit ac9c0274f4
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GPG Key ID: 4AEE18F83AFDEB23
9 changed files with 265 additions and 24 deletions
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95
src/terminal_pane/scroll.rs
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@ -248,7 +248,7 @@ impl Debug for WrappedFragment {
}
}
#[derive(Debug)]
#[derive(Debug, Clone, Copy)]
pub struct CursorPosition {
line_index: (usize, usize), // (canonical line index, fragment index in line)
column_index: usize, // 0 is the first character from the pane edge
@ -312,6 +312,8 @@ pub struct Scroll {
viewport_bottom_offset: Option<usize>,
scroll_region: Option<(usize, usize)>, // start line, end line (if set, this is the area the will scroll)
show_cursor: bool,
lines_outside_of_scroll_region: Option<Vec<CanonicalLine>>,
cursor_position_outside_of_scroll_region: Option<CursorPosition>,
}
impl Scroll {
@ -327,6 +329,8 @@ impl Scroll {
viewport_bottom_offset: None,
scroll_region: None,
show_cursor: true,
lines_outside_of_scroll_region: None,
cursor_position_outside_of_scroll_region: None,
}
}
pub fn as_character_lines(&self) -> Vec<Vec<TerminalCharacter>> {
@ -393,7 +397,9 @@ impl Scroll {
}
pub fn add_canonical_line(&mut self) {
let current_canonical_line_index = self.cursor_position.line_index.0;
if let Some((scroll_region_top, scroll_region_bottom)) = self.scroll_region {
if let Some((scroll_region_top, scroll_region_bottom)) =
self.scroll_region_absolute_indices()
{
if current_canonical_line_index == scroll_region_bottom {
// end of scroll region
// when we have a scroll region set and we're at its bottom
@ -500,17 +506,15 @@ impl Scroll {
self.cursor_position.move_up_by_canonical_lines(count);
}
pub fn change_size(&mut self, columns: usize, lines: usize) {
if self.scroll_region.is_none() {
for canonical_line in self.canonical_lines.iter_mut() {
canonical_line.change_width(columns);
}
let cursor_line = self
.canonical_lines
.get(self.cursor_position.line_index.0)
.expect("cursor out of bounds");
if cursor_line.wrapped_fragments.len() <= self.cursor_position.line_index.1 {
self.cursor_position.line_index.1 = cursor_line.wrapped_fragments.len() - 1;
}
for canonical_line in self.canonical_lines.iter_mut() {
canonical_line.change_width(columns);
}
let cursor_line = self
.canonical_lines
.get(self.cursor_position.line_index.0)
.expect("cursor out of bounds");
if cursor_line.wrapped_fragments.len() <= self.cursor_position.line_index.1 {
self.cursor_position.line_index.1 = cursor_line.wrapped_fragments.len() - 1;
}
self.lines_in_view = lines;
self.total_columns = columns;
@ -597,13 +601,18 @@ impl Scroll {
self.cursor_position.reset();
}
pub fn move_cursor_to(&mut self, line: usize, col: usize) {
if self.canonical_lines.len() > line {
self.cursor_position.move_to_canonical_line(line);
let line_on_screen = if self.canonical_lines.len() > self.lines_in_view {
line + (self.canonical_lines.len() - self.lines_in_view)
} else {
for _ in self.canonical_lines.len()..=line {
line
};
if self.canonical_lines.len() > line_on_screen {
self.cursor_position.move_to_canonical_line(line_on_screen);
} else {
for _ in self.canonical_lines.len()..=line_on_screen {
self.canonical_lines.push(CanonicalLine::new());
}
self.cursor_position.move_to_canonical_line(line);
self.cursor_position.move_to_canonical_line(line_on_screen);
}
let (current_canonical_line_index, current_line_wrap_position) =
self.cursor_position.line_index;
@ -630,14 +639,48 @@ impl Scroll {
self.move_cursor_to(line, current_column);
}
pub fn set_scroll_region(&mut self, top_line: usize, bottom_line: usize) {
if self.scroll_region.is_none() {
self.lines_outside_of_scroll_region = Some(self.canonical_lines.drain(..).collect());
self.cursor_position_outside_of_scroll_region = Some(self.cursor_position);
}
self.scroll_region = Some((top_line, bottom_line));
// TODO: clear linewraps in scroll region?
}
pub fn clear_scroll_region(&mut self) {
self.scroll_region = None;
if let Some(scroll_region) = self.scroll_region_absolute_indices() {
self.canonical_lines.drain(scroll_region.0..scroll_region.1);
self.cursor_position.reset();
self.scroll_region = None;
}
if let Some(lines_outside_of_scroll_region) = self.lines_outside_of_scroll_region.as_mut() {
self.canonical_lines = lines_outside_of_scroll_region.drain(..).collect();
}
if let Some(cursor_position_outside_of_scroll_region) =
self.cursor_position_outside_of_scroll_region
{
self.cursor_position = cursor_position_outside_of_scroll_region;
}
self.lines_outside_of_scroll_region = None;
self.cursor_position_outside_of_scroll_region = None;
}
pub fn set_scroll_region_to_screen_size(&mut self) {
self.scroll_region = Some((0, self.lines_in_view - 1)); // these are indices
}
fn scroll_region_absolute_indices(&mut self) -> Option<(usize, usize)> {
if self.scroll_region.is_none() {
return None;
};
if self.canonical_lines.len() > self.lines_in_view {
let absolute_top = self.canonical_lines.len() - 1 - self.lines_in_view;
let absolute_bottom = self.canonical_lines.len() - 1;
Some((absolute_top, absolute_bottom))
} else {
Some((self.scroll_region.unwrap().0, self.scroll_region.unwrap().1))
}
}
pub fn delete_lines_in_scroll_region(&mut self, count: usize) {
if let Some((scroll_region_top, scroll_region_bottom)) = self.scroll_region {
if let Some((scroll_region_top, scroll_region_bottom)) =
self.scroll_region_absolute_indices()
{
let current_canonical_line_index = self.cursor_position.line_index.0;
if current_canonical_line_index >= scroll_region_top
&& current_canonical_line_index <= scroll_region_bottom
@ -655,7 +698,9 @@ impl Scroll {
}
}
pub fn add_empty_lines_in_scroll_region(&mut self, count: usize) {
if let Some((scroll_region_top, scroll_region_bottom)) = self.scroll_region {
if let Some((scroll_region_top, scroll_region_bottom)) =
self.scroll_region_absolute_indices()
{
let current_canonical_line_index = self.cursor_position.line_index.0;
if current_canonical_line_index >= scroll_region_top
&& current_canonical_line_index <= scroll_region_bottom
@ -673,7 +718,9 @@ impl Scroll {
}
}
pub fn move_cursor_up_in_scroll_region(&mut self, count: usize) {
if let Some((scroll_region_top, scroll_region_bottom)) = self.scroll_region {
if let Some((scroll_region_top, scroll_region_bottom)) =
self.scroll_region_absolute_indices()
{
// the scroll region indices start at 1, so we need to adjust them
for _ in 0..count {
let current_canonical_line_index = self.cursor_position.line_index.0;
@ -694,7 +741,7 @@ impl Scroll {
/// [scroll_up](https://github.com/alacritty/alacritty/blob/ec42b42ce601808070462111c0c28edb0e89babb/alacritty_terminal/src/grid/mod.rs#L261)
/// This function takes the first line of the scroll region and moves it to the bottom (count times)
pub fn rotate_scroll_region_up(&mut self, count: usize) {
if let Some((_, scroll_region_bottom)) = self.scroll_region {
if let Some((_, scroll_region_bottom)) = self.scroll_region_absolute_indices() {
if self.show_cursor {
let scroll_region_bottom_index = scroll_region_bottom - 1;
self.cursor_position
@ -714,7 +761,7 @@ impl Scroll {
/// [scroll_down](https://github.com/alacritty/alacritty/blob/ec42b42ce601808070462111c0c28edb0e89babb/alacritty_terminal/src/grid/mod.rs#L221)
/// This function takes the last line of the scroll region and moves it to the top (count times)
pub fn rotate_scroll_region_down(&mut self, count: usize) {
if let Some((scroll_region_top, _)) = self.scroll_region {
if let Some((scroll_region_top, _)) = self.scroll_region_absolute_indices() {
if self.show_cursor {
let scroll_region_top_index = scroll_region_top - 1;
self.cursor_position

9
src/terminal_pane/terminal_pane.rs
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@ -443,6 +443,15 @@ impl vte::Perform for TerminalPane {
(params[0] as usize - 1, params[1] as usize - 1)
}
};
if params.len() >= 1 && params[0] == 0 {
// this is a hack
//
// the logic should *probably* be:
// if we get an instruction to move outside the scroll region
// (which is 1 indexed, so if we get 0 it's always(?) outside)
// we need to set it to screen size
self.scroll.set_scroll_region_to_screen_size();
}
self.scroll.move_cursor_to(row, col);
} else if c == 'A' {
// move cursor up until edge of screen

BIN
src/tests/fixtures/clear_scroll_region vendored Normal file
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src/tests/fixtures/vim_overwrite vendored Normal file
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57
src/tests/integration/compatibility.rs
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@ -260,3 +260,60 @@ pub fn htop_right_scrolling() {
assert_snapshot!(snapshot);
}
}
#[test]
pub fn vim_overwrite() {
// this tests the vim overwrite message
// to recreate:
// * open a file in vim
// * open the same file in another window
// * change the file in the other window and save
// * change the file in the original vim window and save
// * confirm you would like to change the file by pressing 'y' and then ENTER
// * if everything looks fine, this test passed :)
let fake_win_size = PositionAndSize {
columns: 116,
rows: 28,
x: 0,
y: 0,
};
let fixture_name = "vim_overwrite";
let mut fake_input_output = get_fake_os_input(&fake_win_size, fixture_name);
fake_input_output.add_terminal_input(&[&COMMAND_TOGGLE, &COMMAND_TOGGLE, &QUIT]);
start(Box::new(fake_input_output.clone()), Opt::default());
let output_frames = fake_input_output
.stdout_writer
.output_frames
.lock()
.unwrap();
let snapshots = get_output_frame_snapshots(&output_frames, &fake_win_size);
for snapshot in snapshots {
assert_snapshot!(snapshot);
}
}
#[test]
pub fn clear_scroll_region() {
// this tests the scroll region used by eg. vim is cleared properly
// this means that when vim exits, we get back the previous scroll
// buffer
let fake_win_size = PositionAndSize {
columns: 116,
rows: 28,
x: 0,
y: 0,
};
let fixture_name = "clear_scroll_region";
let mut fake_input_output = get_fake_os_input(&fake_win_size, fixture_name);
fake_input_output.add_terminal_input(&[&COMMAND_TOGGLE, &COMMAND_TOGGLE, &QUIT]);
start(Box::new(fake_input_output.clone()), Opt::default());
let output_frames = fake_input_output
.stdout_writer
.output_frames
.lock()
.unwrap();
let snapshots = get_output_frame_snapshots(&output_frames, &fake_win_size);
for snapshot in snapshots {
assert_snapshot!(snapshot);
}
}

32
src/tests/integration/snapshots/mosaic__tests__integration__compatibility__clear_scroll_region-2.snap Normal file
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@ -0,0 +1,32 @@
---
source: src/tests/integration/compatibility.rs
expression: snapshot
---
⋊> ~/c/mosaic on main ⨯ vim some-file 15:07:22
⋊> ~/c/mosaic on main ⨯ 15:07:29
Bye from Mosaic!█

32
src/tests/integration/snapshots/mosaic__tests__integration__compatibility__clear_scroll_region.snap Normal file
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@ -0,0 +1,32 @@
---
source: src/tests/integration/compatibility.rs
expression: snapshot
---
Welcome to fish, the friendly interactive shell
⋊> ~/c/mosaic on main ⨯ vim some-file 15:07:22
⋊> ~/c/mosaic on main ⨯ █ 15:07:29

32
src/tests/integration/snapshots/mosaic__tests__integration__compatibility__vim_overwrite-2.snap Normal file
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@ -0,0 +1,32 @@
---
source: src/tests/integration/compatibility.rs
expression: snapshot
---
1 line 1
2 line 2
3 line 3
4 line 4
5 line 5
6 line 6
7 line 7
8 line 8
9 line 9
10 line 10
11 line 11
12 line 12
13 line 13
14 line 14
15 line 15
16 line 16
17 line 17
18 line 18
19 line 19
20 line 20
21 line 21
22 line 22
23 line 23
24 line 24
25 line 25
NORMAL some-file unix | utf-8 | no ft 1% 1:1
Bye from Mosaic!█

32
src/tests/integration/snapshots/mosaic__tests__integration__compatibility__vim_overwrite.snap Normal file
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@ -0,0 +1,32 @@
---
source: src/tests/integration/compatibility.rs
expression: snapshot
---
1 █
1 line 1
2 line 2
3 line 3
4 line 4
5 line 5
6 line 6
7 line 7
8 line 8
9 line 9
10 line 10
11 line 11
12 line 12
13 line 13
14 line 14
15 line 15
16 line 16
17 line 17
18 line 18
19 line 19
20 line 20
21 line 21
22 line 22
23 line 23
24 line 24
25 line 25
NORMAL some-file unix | utf-8 | no ft 1% 1:1