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Polished scrolling significantly

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This commit is contained in:
Mikayla Maki 2022-09-02 15:47:35 -07:00
parent 0588360bf0
commit 1502c19208
3 changed files with 81 additions and 37 deletions
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94
crates/terminal/src/terminal.rs
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@ -72,7 +72,7 @@ pub fn init(cx: &mut MutableAppContext) {
///Scrolling is unbearably sluggish by default. Alacritty supports a configurable
///Scroll multiplier that is set to 3 by default. This will be removed when I
///Implement scroll bars.
const ALACRITTY_SCROLL_MULTIPLIER: f32 = 3.;
const SCROLL_MULTIPLIER: f32 = 4.;
const MAX_SEARCH_LINES: usize = 100;
const DEBUG_TERMINAL_WIDTH: f32 = 500.;
const DEBUG_TERMINAL_HEIGHT: f32 = 30.;
@ -381,6 +381,7 @@ impl TerminalBuilder {
shell_pid,
foreground_process_info: None,
breadcrumb_text: String::new(),
scroll_px: 0.,
};
Ok(TerminalBuilder {
@ -500,6 +501,7 @@ pub struct Terminal {
shell_pid: u32,
shell_fd: u32,
foreground_process_info: Option<LocalProcessInfo>,
scroll_px: f32,
}
impl Terminal {
@ -893,47 +895,69 @@ impl Terminal {
///Scroll the terminal
pub fn scroll_wheel(&mut self, e: &ScrollWheelEvent, origin: Vector2F) {
if self.mouse_mode(e.shift) {
//TODO: Currently this only sends the current scroll reports as they come in. Alacritty
//Sends the *entire* scroll delta on *every* scroll event, only resetting it when
//The scroll enters 'TouchPhase::Started'. Do I need to replicate this?
//This would be consistent with a scroll model based on 'distance from origin'...
let scroll_lines = (e.delta.y() / self.cur_size.line_height) as i32;
let point = mouse_point(
e.position.sub(origin),
self.cur_size,
self.last_content.display_offset,
);
let mouse_mode = self.mouse_mode(e.shift);
if let Some(scrolls) =
scroll_report(point, scroll_lines as i32, e, self.last_content.mode)
if let Some(scroll_lines) = self.determine_scroll_lines(e, mouse_mode) {
if mouse_mode {
let point = mouse_point(
e.position.sub(origin),
self.cur_size,
self.last_content.display_offset,
);
if let Some(scrolls) =
scroll_report(point, scroll_lines as i32, e, self.last_content.mode)
{
for scroll in scrolls {
self.pty_tx.notify(scroll);
}
};
} else if self
.last_content
.mode
.contains(TermMode::ALT_SCREEN | TermMode::ALTERNATE_SCROLL)
&& !e.shift
{
for scroll in scrolls {
self.pty_tx.notify(scroll);
self.pty_tx.notify(alt_scroll(scroll_lines))
} else {
if scroll_lines != 0 {
let scroll = AlacScroll::Delta(scroll_lines);
self.events.push_back(InternalEvent::Scroll(scroll));
}
};
} else if self
.last_content
.mode
.contains(TermMode::ALT_SCREEN | TermMode::ALTERNATE_SCROLL)
&& !e.shift
{
//TODO: See above TODO, also applies here.
let scroll_lines =
((e.delta.y() * ALACRITTY_SCROLL_MULTIPLIER) / self.cur_size.line_height) as i32;
self.pty_tx.notify(alt_scroll(scroll_lines))
} else {
let scroll_lines =
((e.delta.y() * ALACRITTY_SCROLL_MULTIPLIER) / self.cur_size.line_height) as i32;
if scroll_lines != 0 {
let scroll = AlacScroll::Delta(scroll_lines);
self.events.push_back(InternalEvent::Scroll(scroll));
}
}
}
fn determine_scroll_lines(&mut self, e: &ScrollWheelEvent, mouse_mode: bool) -> Option<i32> {
let scroll_multiplier = if mouse_mode { 1. } else { SCROLL_MULTIPLIER };
match e.phase {
/* Reset scroll state on started */
Some(gpui::TouchPhase::Started) => {
self.scroll_px = 0.;
None
}
/* Calculate the appropriate scroll lines */
Some(gpui::TouchPhase::Moved) => {
let old_offset = (self.scroll_px / self.cur_size.line_height) as i32;
self.scroll_px += e.delta.y() * scroll_multiplier;
let new_offset = (self.scroll_px / self.cur_size.line_height) as i32;
// Whenever we hit the edges, reset our stored scroll to 0
// so we can respond to changes in direction quickly
self.scroll_px %= self.cur_size.height;
Some(new_offset - old_offset)
}
/* Fall back to delta / line_height */
None => Some(((e.delta.y() * scroll_multiplier) / self.cur_size.line_height) as i32),
_ => None,
}
}
pub fn find_matches(
&mut self,
query: project::search::SearchQuery,