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feat: Scroll view up/down ctrl+y, ctrl+e. Don't move cursor when scro… #538

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Merged
altsem merged 1 commit into from
Jun 5, 2026
Merged

feat: Scroll view up/down ctrl+y, ctrl+e. Don't move cursor when scro… #538

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4 changes: 2 additions & 2 deletions src/app.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -328,13 +328,13 @@ impl App {
MouseEventKind::ScrollUp => {
let scroll_lines = self.state.config.general.mouse_scroll_lines;
if scroll_lines > 0 {
self.screen_mut().scroll_up(scroll_lines);
self.screen_mut().scroll_view_up(scroll_lines);
}
}
MouseEventKind::ScrollDown => {
let scroll_lines = self.state.config.general.mouse_scroll_lines;
if scroll_lines > 0 {
self.screen_mut().scroll_down(scroll_lines);
self.screen_mut().scroll_view_down(scroll_lines);
}
}
_ => return Ok(false),
Expand Down
2 changes: 2 additions & 0 deletions src/default_config.toml
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Original file line number Diff line number Diff line change
Expand Up @@ -118,6 +118,8 @@ root.half_page_up = ["ctrl+u"]
root.half_page_down = ["ctrl+d"]
root.move_top = ["g+g"]
root.move_bottom = ["G"]
root.scroll_view_up = ["ctrl+y"]
root.scroll_view_down = ["ctrl+e"]
root.show_refs = ["Y"]
root.show = ["enter"]
root.discard = ["K"]
Expand Down
38 changes: 34 additions & 4 deletions src/ops/editor.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -277,27 +277,57 @@ pub(crate) struct HalfPageUp;
impl OpTrait for HalfPageUp {
fn get_action(&self, _target: &ItemData) -> Option<Action> {
Some(Rc::new(|app, _term| {
app.screen_mut().scroll_half_page_up();
app.screen_mut().scroll_view_half_page_up();
Ok(())
}))
}

fn display(&self, _state: &State) -> String {
"Half page up".into()
"Scroll half page up".into()
}
}

pub(crate) struct HalfPageDown;
impl OpTrait for HalfPageDown {
fn get_action(&self, _target: &ItemData) -> Option<Action> {
Some(Rc::new(|app, _term| {
app.screen_mut().scroll_half_page_down();
app.screen_mut().scroll_view_half_page_down();
Ok(())
}))
}

fn display(&self, _state: &State) -> String {
"Half page down".into()
"Scroll half page down".into()
}
}

pub(crate) struct ScrollViewUp;
impl OpTrait for ScrollViewUp {
fn get_action(&self, _target: &ItemData) -> Option<Action> {
Some(Rc::new(|app, _term| {
app.close_menu();
app.screen_mut().scroll_view_up(1);
Ok(())
}))
}

fn display(&self, _state: &State) -> String {
"Scroll view up".into()
}
}

pub(crate) struct ScrollViewDown;
impl OpTrait for ScrollViewDown {
fn get_action(&self, _target: &ItemData) -> Option<Action> {
Some(Rc::new(|app, _term| {
app.close_menu();
app.screen_mut().scroll_view_down(1);
Ok(())
}))
}

fn display(&self, _state: &State) -> String {
"Scroll view down".into()
}
}

Expand Down
4 changes: 4 additions & 0 deletions src/ops/mod.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -125,6 +125,8 @@ pub(crate) enum Op {
MoveBottom,
HalfPageUp,
HalfPageDown,
ScrollViewUp,
ScrollViewDown,

Refresh,
Quit,
Expand Down Expand Up @@ -157,6 +159,8 @@ impl Op {
Op::HalfPageDown => Box::new(editor::HalfPageDown),
Op::MoveTop => Box::new(editor::MoveTop),
Op::MoveBottom => Box::new(editor::MoveBottom),
Op::ScrollViewUp => Box::new(editor::ScrollViewUp),
Op::ScrollViewDown => Box::new(editor::ScrollViewDown),
Op::Checkout => Box::new(branch::Checkout),
Op::CheckoutNewBranch => Box::new(branch::CheckoutNewBranch),
Op::Spinoff => Box::new(branch::Spinoff),
Expand Down
60 changes: 31 additions & 29 deletions src/screen/mod.rs
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Expand Up @@ -171,44 +171,24 @@ impl Screen {
.unwrap_or(self.cursor)
}

pub(crate) fn scroll_half_page_up(&mut self) {
pub(crate) fn scroll_view_half_page_up(&mut self) {
let half_screen = self.size.height as usize / 2;
self.scroll = self.scroll.saturating_sub(half_screen);

let nav_mode = self.selected_item_nav_mode();
self.update_cursor(nav_mode);
self.scroll_view_up(half_screen);
}

pub(crate) fn scroll_half_page_down(&mut self) {
pub(crate) fn scroll_view_half_page_down(&mut self) {
let half_screen = self.size.height as usize / 2;
self.scroll = (self.scroll + half_screen).min(
self.line_index
.iter()
.copied()
.enumerate()
.map(|(line, _)| (line + 1).saturating_sub(half_screen))
.next_back()
.unwrap_or(0),
);

let nav_mode = self.selected_item_nav_mode();
self.update_cursor(nav_mode);
self.scroll_view_down(half_screen);
}

pub(crate) fn scroll_up(&mut self, lines: usize) {
pub(crate) fn scroll_view_up(&mut self, lines: usize) {
self.scroll = self.scroll.saturating_sub(lines);
let nav_mode = self.selected_item_nav_mode();
self.update_cursor(nav_mode);
self.clamp_scroll();
}

pub(crate) fn scroll_down(&mut self, lines: usize) {
let max_scroll = self
.line_index
.len()
.saturating_sub(self.size.height as usize);
self.scroll = (self.scroll + lines).min(max_scroll);
let nav_mode = self.selected_item_nav_mode();
self.update_cursor(nav_mode);
pub(crate) fn scroll_view_down(&mut self, lines: usize) {
self.scroll = self.scroll.saturating_add(lines);
self.clamp_scroll();
}

pub(crate) fn toggle_section(&mut self) {
Expand Down Expand Up @@ -242,6 +222,7 @@ impl Screen {
return;
}

self.clamp_scroll();
self.clamp_cursor();
if self.is_cursor_off_screen() {
self.move_cursor_to_screen_center();
Expand Down Expand Up @@ -283,6 +264,7 @@ impl Screen {
.flatten()
.map(|(i, _item)| i)
.collect();
self.clamp_scroll();
}

fn is_cursor_off_screen(&self) -> bool {
Expand All @@ -300,6 +282,26 @@ impl Screen {
.clamp(0, self.line_index.len().saturating_sub(1));
}

fn clamp_scroll(&mut self) {
if self.line_index.is_empty() {
self.scroll = 0;
return;
}

self.scroll = self.scroll.min(self.max_scroll_with_context());
}

fn max_scroll_with_context(&self) -> usize {
let len = self.line_index.len();
if len == 0 {
return 0;
}

let max_scroll = len.saturating_sub(self.size.height as usize);
let max_scroll = max_scroll.saturating_add(BOTTOM_CONTEXT_LINES);
max_scroll.min(len.saturating_sub(1))
}

fn move_from_unselectable(&mut self, nav_mode: NavMode) {
if !self.nav_filter(self.cursor, nav_mode) {
self.select_previous(nav_mode);
Expand Down
42 changes: 21 additions & 21 deletions src/tests/snapshots/gitu__tests__editor__scroll_past_selection.snap
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Expand Up @@ -2,24 +2,24 @@
source: src/tests/editor.rs
expression: ctx.redact_buffer()
---
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37 changes: 18 additions & 19 deletions src/tests/snapshots/gitu__tests__help_menu.snap
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@@ -1,26 +1,25 @@
---
source: src/tests/mod.rs
assertion_line: 50
expression: ctx.redact_buffer()
---
▌On branch main |
▌Your branch is up to date with 'origin/main'. |
|
Recent commits |
────────────────────────────────────────────────────────────────────────────────|
Help Submenu On branch main |
Y Show Refs b Branch tab Fold |
k/up Up c Commit |
j/down Down f Fetch |
ctrl+k/ctrl+up Up line h/? Help |
ctrl+j/ctrl+down Down line l Log |
alt+k/alt+up Prev section m Merge |
alt+j/alt+down Next section M Remote |
alt+h/alt+left Parent section F Pull |
g+g Top P Push |
G Bottom r Rebase |
ctrl+u Half page up X Reset |
ctrl+d Half page down V Revert |
g+r Refresh A Cherry-pick |
q/esc Quit/Close z Stash |
styles_hash: d3bd90efdd7b7678
Help Submenu On branch main |
Y Show Refs b Branch tab Fold |
k/up Up c Commit |
j/down Down f Fetch |
ctrl+k/ctrl+up Up line h/? Help |
ctrl+j/ctrl+down Down line l Log |
alt+k/alt+up Prev section m Merge |
alt+j/alt+down Next section M Remote |
alt+h/alt+left Parent section F Pull |
g+g Top P Push |
G Bottom r Rebase |
ctrl+u Scroll half page up X Reset |
ctrl+d Scroll half page down V Revert |
ctrl+y Scroll view up A Cherry-pick |
ctrl+e Scroll view down z Stash |
g+r Refresh |
q/esc Quit/Close |
styles_hash: f683951757a0712c
4 changes: 2 additions & 2 deletions src/tests/snapshots/gitu__tests__mouse_wheel_scroll_down.snap
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Expand Up @@ -12,7 +12,7 @@ expression: ctx.redact_buffer()
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Expand All @@ -22,4 +22,4 @@ expression: ctx.redact_buffer()
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4 changes: 2 additions & 2 deletions src/tests/snapshots/gitu__tests__mouse_wheel_scroll_up.snap
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Expand Up @@ -5,7 +5,7 @@ expression: ctx.redact_buffer()
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Expand All @@ -22,4 +22,4 @@ expression: ctx.redact_buffer()
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