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Remove unnecessary Mutex from scroll-related state in Editor

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Co-Authored-By: Nathan Sobo <nathan@zed.dev>
This commit is contained in:
Antonio Scandurra 2021-07-27 18:52:18 +02:00 committed by Max Brunsfeld
parent 694ab0d69d
commit 3d07be34f8
1 changed files with 28 additions and 32 deletions
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60
zed/src/editor.rs
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@ -20,7 +20,6 @@ use gpui::{
ElementBox, Entity, FontCache, ModelHandle, MutableAppContext, Task, TextLayoutCache, View,
ViewContext, WeakViewHandle,
};
use parking_lot::Mutex;
use postage::watch;
use serde::{Deserialize, Serialize};
use smallvec::SmallVec;
@ -375,8 +374,8 @@ pub struct Editor {
next_selection_id: usize,
add_selections_state: Option<AddSelectionsState>,
select_larger_syntax_node_stack: Vec<Vec<Selection>>,
scroll_position: Mutex<Vector2F>,
autoscroll_requested: Mutex<bool>,
scroll_position: Vector2F,
autoscroll_requested: bool,
settings: watch::Receiver<Settings>,
focused: bool,
cursors_visible: bool,
@ -446,8 +445,8 @@ impl Editor {
next_selection_id,
add_selections_state: None,
select_larger_syntax_node_stack: Vec::new(),
scroll_position: Mutex::new(Vector2F::zero()),
autoscroll_requested: Mutex::new(false),
scroll_position: Vector2F::zero(),
autoscroll_requested: false,
settings,
focused: false,
cursors_visible: false,
@ -467,7 +466,7 @@ impl Editor {
Snapshot {
display_snapshot: self.display_map.update(cx, |map, cx| map.snapshot(cx)),
gutter_visible: !self.single_line,
scroll_position: *self.scroll_position.lock(),
scroll_position: self.scroll_position,
theme: settings.theme.clone(),
font_family: settings.buffer_font_family,
font_size: settings.buffer_font_size,
@ -475,18 +474,17 @@ impl Editor {
}
fn scroll(&mut self, scroll_position: &Vector2F, cx: &mut ViewContext<Self>) {
*self.scroll_position.lock() = *scroll_position;
self.scroll_position = *scroll_position;
cx.notify();
}
pub fn scroll_position(&self) -> Vector2F {
*self.scroll_position.lock()
self.scroll_position
}
pub fn clamp_scroll_left(&mut self, max: f32) -> bool {
let mut scroll_position = self.scroll_position.lock();
if max < scroll_position.x() {
scroll_position.set_x(max);
if max < self.scroll_position.x() {
self.scroll_position.set_x(max);
true
} else {
false
@ -494,20 +492,18 @@ impl Editor {
}
pub fn autoscroll_vertically(
&self,
&mut self,
viewport_height: f32,
line_height: f32,
cx: &mut MutableAppContext,
) -> bool {
let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
let mut scroll_position = self.scroll_position.lock();
let scroll_top = scroll_position.y();
scroll_position
let scroll_top = self.scroll_position.y();
self.scroll_position
.set_y(scroll_top.min(display_map.max_point().row().saturating_sub(1) as f32));
let mut autoscroll_requested = self.autoscroll_requested.lock();
if *autoscroll_requested {
*autoscroll_requested = false;
if self.autoscroll_requested {
self.autoscroll_requested = false;
} else {
return false;
}
@ -538,20 +534,20 @@ impl Editor {
let target_top = (first_cursor_top - margin).max(0.0);
let target_bottom = last_cursor_bottom + margin;
let start_row = scroll_position.y();
let start_row = self.scroll_position.y();
let end_row = start_row + visible_lines;
if target_top < start_row {
scroll_position.set_y(target_top);
self.scroll_position.set_y(target_top);
} else if target_bottom >= end_row {
scroll_position.set_y(target_bottom - visible_lines);
self.scroll_position.set_y(target_bottom - visible_lines);
}
true
}
pub fn autoscroll_horizontally(
&self,
&mut self,
start_row: u32,
viewport_width: f32,
scroll_width: f32,
@ -579,15 +575,15 @@ impl Editor {
return false;
}
let mut scroll_position = self.scroll_position.lock();
let scroll_left = scroll_position.x() * max_glyph_width;
let scroll_left = self.scroll_position.x() * max_glyph_width;
let scroll_right = scroll_left + viewport_width;
if target_left < scroll_left {
scroll_position.set_x(target_left / max_glyph_width);
self.scroll_position.set_x(target_left / max_glyph_width);
true
} else if target_right > scroll_right {
scroll_position.set_x((target_right - viewport_width) / max_glyph_width);
self.scroll_position
.set_x((target_right - viewport_width) / max_glyph_width);
true
} else {
false
@ -645,7 +641,7 @@ impl Editor {
return;
}
*self.scroll_position.lock() = scroll_position;
self.scroll_position = scroll_position;
cx.notify();
}
@ -2016,7 +2012,7 @@ impl Editor {
self.pause_cursor_blinking(cx);
if autoscroll {
*self.autoscroll_requested.lock() = true;
self.autoscroll_requested = true;
cx.notify();
}
@ -2146,7 +2142,7 @@ impl Editor {
fn fold_ranges<T: ToOffset>(&mut self, ranges: Vec<Range<T>>, cx: &mut ViewContext<Self>) {
if !ranges.is_empty() {
self.display_map.update(cx, |map, cx| map.fold(ranges, cx));
*self.autoscroll_requested.lock() = true;
self.autoscroll_requested = true;
cx.notify();
}
}
@ -2155,7 +2151,7 @@ impl Editor {
if !ranges.is_empty() {
self.display_map
.update(cx, |map, cx| map.unfold(ranges, cx));
*self.autoscroll_requested.lock() = true;
self.autoscroll_requested = true;
cx.notify();
}
}
@ -2554,8 +2550,8 @@ impl workspace::ItemView for Editor {
where
Self: Sized,
{
let clone = Editor::for_buffer(self.buffer.clone(), self.settings.clone(), cx);
*clone.scroll_position.lock() = *self.scroll_position.lock();
let mut clone = Editor::for_buffer(self.buffer.clone(), self.settings.clone(), cx);
clone.scroll_position = self.scroll_position;
Some(clone)
}