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Merge pull request #1267 from zed-industries/terminal-fr

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This pull request is small and doesn't include many changes to any existing functionality. In the interest of removing blockers ASAP, I will merge.
This commit is contained in:
Mikayla Maki 2022-06-30 20:12:08 -07:00 committed by GitHub
commit 04e802874d
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6 changed files with 431 additions and 180 deletions
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1
Cargo.lock generated
View File

@ -4881,6 +4881,7 @@ dependencies = [
"editor",
"futures",
"gpui",
"itertools",
"mio-extras",
"ordered-float",
"project",

2
crates/terminal/Cargo.toml
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@ -20,6 +20,8 @@ smallvec = { version = "1.6", features = ["union"] }
mio-extras = "2.0.6"
futures = "0.3"
ordered-float = "2.1.1"
itertools = "0.10"
[dev-dependencies]
gpui = { path = "../gpui", features = ["test-support"] }

96
crates/terminal/print256color.sh Executable file
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@ -0,0 +1,96 @@
#!/bin/bash
# Tom Hale, 2016. MIT Licence.
# Print out 256 colours, with each number printed in its corresponding colour
# See http://askubuntu.com/questions/821157/print-a-256-color-test-pattern-in-the-terminal/821163#821163
set -eu # Fail on errors or undeclared variables
printable_colours=256
# Return a colour that contrasts with the given colour
# Bash only does integer division, so keep it integral
function contrast_colour {
local r g b luminance
colour="$1"
if (( colour < 16 )); then # Initial 16 ANSI colours
(( colour == 0 )) && printf "15" || printf "0"
return
fi
# Greyscale # rgb_R = rgb_G = rgb_B = (number - 232) * 10 + 8
if (( colour > 231 )); then # Greyscale ramp
(( colour < 244 )) && printf "15" || printf "0"
return
fi
# All other colours:
# 6x6x6 colour cube = 16 + 36*R + 6*G + B # Where RGB are [0..5]
# See http://stackoverflow.com/a/27165165/5353461
# r=$(( (colour-16) / 36 ))
g=$(( ((colour-16) % 36) / 6 ))
# b=$(( (colour-16) % 6 ))
# If luminance is bright, print number in black, white otherwise.
# Green contributes 587/1000 to human perceived luminance - ITU R-REC-BT.601
(( g > 2)) && printf "0" || printf "15"
return
# Uncomment the below for more precise luminance calculations
# # Calculate percieved brightness
# # See https://www.w3.org/TR/AERT#color-contrast
# # and http://www.itu.int/rec/R-REC-BT.601
# # Luminance is in range 0..5000 as each value is 0..5
# luminance=$(( (r * 299) + (g * 587) + (b * 114) ))
# (( $luminance > 2500 )) && printf "0" || printf "15"
}
# Print a coloured block with the number of that colour
function print_colour {
local colour="$1" contrast
contrast=$(contrast_colour "$1")
printf "\e[48;5;%sm" "$colour" # Start block of colour
printf "\e[38;5;%sm%3d" "$contrast" "$colour" # In contrast, print number
printf "\e[0m " # Reset colour
}
# Starting at $1, print a run of $2 colours
function print_run {
local i
for (( i = "$1"; i < "$1" + "$2" && i < printable_colours; i++ )) do
print_colour "$i"
done
printf " "
}
# Print blocks of colours
function print_blocks {
local start="$1" i
local end="$2" # inclusive
local block_cols="$3"
local block_rows="$4"
local blocks_per_line="$5"
local block_length=$((block_cols * block_rows))
# Print sets of blocks
for (( i = start; i <= end; i += (blocks_per_line-1) * block_length )) do
printf "\n" # Space before each set of blocks
# For each block row
for (( row = 0; row < block_rows; row++ )) do
# Print block columns for all blocks on the line
for (( block = 0; block < blocks_per_line; block++ )) do
print_run $(( i + (block * block_length) )) "$block_cols"
done
(( i += block_cols )) # Prepare to print the next row
printf "\n"
done
done
}
print_run 0 16 # The first 16 colours are spread over the whole spectrum
printf "\n"
print_blocks 16 231 6 6 3 # 6x6x6 colour cube between 16 and 231 inclusive
print_blocks 232 255 12 2 1 # Not 50, but 24 Shades of Grey

45
crates/terminal/src/terminal.rs
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@ -25,7 +25,6 @@ use workspace::{Item, Workspace};
use crate::terminal_element::{get_color_at_index, TerminalEl};
//ASCII Control characters on a keyboard
//Consts -> Structs -> Impls -> Functions, Vaguely in order of importance
const ETX_CHAR: char = 3_u8 as char; //'End of text', the control code for 'ctrl-c'
const TAB_CHAR: char = 9_u8 as char;
const CARRIAGE_RETURN_CHAR: char = 13_u8 as char;
@ -39,9 +38,11 @@ const DEFAULT_TITLE: &str = "Terminal";
pub mod terminal_element;
///Action for carrying the input to the PTY
#[derive(Clone, Default, Debug, PartialEq, Eq)]
pub struct Input(pub String);
///Event to transmit the scroll from the element to the view
#[derive(Clone, Debug, PartialEq)]
pub struct ScrollTerminal(pub i32);
@ -51,6 +52,7 @@ actions!(
);
impl_internal_actions!(terminal, [Input, ScrollTerminal]);
///Initialize and register all of our action handlers
pub fn init(cx: &mut MutableAppContext) {
cx.add_action(Terminal::deploy);
cx.add_action(Terminal::write_to_pty);
@ -68,6 +70,7 @@ pub fn init(cx: &mut MutableAppContext) {
cx.add_action(Terminal::scroll_terminal);
}
///A translation struct for Alacritty to communicate with us from their event loop
#[derive(Clone)]
pub struct ZedListener(UnboundedSender<AlacTermEvent>);
@ -77,7 +80,7 @@ impl EventListener for ZedListener {
}
}
///A terminal renderer.
///A terminal view, maintains the PTY's file handles and communicates with the terminal
pub struct Terminal {
pty_tx: Notifier,
term: Arc<FairMutex<Term<ZedListener>>>,
@ -87,6 +90,7 @@ pub struct Terminal {
cur_size: SizeInfo,
}
///Upward flowing events, for changing the title and such
pub enum Event {
TitleChanged,
CloseTerminal,
@ -128,7 +132,8 @@ impl Terminal {
..Default::default()
};
//The details here don't matter, the terminal will be resized on layout
//The details here don't matter, the terminal will be resized on the first layout
//Set to something small for easier debugging
let size_info = SizeInfo::new(200., 100.0, 5., 5., 0., 0., false);
//Set up the terminal...
@ -169,7 +174,6 @@ impl Terminal {
match event {
AlacTermEvent::Wakeup => {
if !cx.is_self_focused() {
//Need to figure out how to trigger a redraw when not in focus
self.has_new_content = true; //Change tab content
cx.emit(Event::TitleChanged);
} else {
@ -207,6 +211,7 @@ impl Terminal {
let term_style = &cx.global::<Settings>().theme.terminal;
match index {
0..=255 => to_alac_rgb(get_color_at_index(&(index as u8), term_style)),
//These additional values are required to match the Alacritty Colors object's behavior
256 => to_alac_rgb(term_style.foreground),
257 => to_alac_rgb(term_style.background),
258 => to_alac_rgb(term_style.cursor),
@ -226,8 +231,7 @@ impl Terminal {
self.write_to_pty(&Input(format(color)), cx)
}
AlacTermEvent::CursorBlinkingChange => {
//So, it's our job to set a timer and cause the cursor to blink here
//Which means that I'm going to put this off until someone @ Zed looks at it
//TODO: Set a timer to blink the cursor on and off
}
AlacTermEvent::Bell => {
self.has_bell = true;
@ -237,6 +241,7 @@ impl Terminal {
}
}
///Resize the terminal and the PTY. This locks the terminal.
fn set_size(&mut self, new_size: SizeInfo) {
if new_size != self.cur_size {
self.pty_tx.0.send(Msg::Resize(new_size)).ok();
@ -245,18 +250,20 @@ impl Terminal {
}
}
///Scroll the terminal. This locks the terminal
fn scroll_terminal(&mut self, scroll: &ScrollTerminal, _: &mut ViewContext<Self>) {
self.term.lock().scroll_display(Scroll::Delta(scroll.0));
}
///Create a new Terminal
///Create a new Terminal in the current working directory or the user's home directory
fn deploy(workspace: &mut Workspace, _: &Deploy, cx: &mut ViewContext<Workspace>) {
let project = workspace.project().read(cx);
let abs_path = project
.active_entry()
.and_then(|entry_id| project.worktree_for_entry(entry_id, cx))
.and_then(|worktree_handle| worktree_handle.read(cx).as_local())
.map(|wt| wt.abs_path().to_path_buf());
.map(|wt| wt.abs_path().to_path_buf())
.or_else(|| Some("~".into()));
workspace.add_item(Box::new(cx.add_view(|cx| Terminal::new(cx, abs_path))), cx);
}
@ -266,16 +273,19 @@ impl Terminal {
self.pty_tx.0.send(Msg::Shutdown).ok();
}
///Tell Zed to close us
fn quit(&mut self, _: &Quit, cx: &mut ViewContext<Self>) {
cx.emit(Event::CloseTerminal);
}
///Attempt to paste the clipboard into the terminal
fn paste(&mut self, _: &Paste, cx: &mut ViewContext<Self>) {
if let Some(item) = cx.read_from_clipboard() {
self.write_to_pty(&Input(item.text().to_owned()), cx);
}
}
///Write the Input payload to the tty. This locks the terminal so we can scroll it.
fn write_to_pty(&mut self, input: &Input, cx: &mut ViewContext<Self>) {
//iTerm bell behavior, bell stays until terminal is interacted with
self.has_bell = false;
@ -284,38 +294,47 @@ impl Terminal {
self.pty_tx.notify(input.0.clone().into_bytes());
}
///Send the `up` key
fn up(&mut self, _: &Up, cx: &mut ViewContext<Self>) {
self.write_to_pty(&Input(UP_SEQ.to_string()), cx);
}
///Send the `down` key
fn down(&mut self, _: &Down, cx: &mut ViewContext<Self>) {
self.write_to_pty(&Input(DOWN_SEQ.to_string()), cx);
}
///Send the `tab` key
fn tab(&mut self, _: &Tab, cx: &mut ViewContext<Self>) {
self.write_to_pty(&Input(TAB_CHAR.to_string()), cx);
}
///Send `SIGINT` (`ctrl-c`)
fn send_sigint(&mut self, _: &Sigint, cx: &mut ViewContext<Self>) {
self.write_to_pty(&Input(ETX_CHAR.to_string()), cx);
}
///Send the `escape` key
fn escape(&mut self, _: &Escape, cx: &mut ViewContext<Self>) {
self.write_to_pty(&Input(ESC_CHAR.to_string()), cx);
}
///Send the `delete` key. TODO: Difference between this and backspace?
fn del(&mut self, _: &Del, cx: &mut ViewContext<Self>) {
self.write_to_pty(&Input(DEL_CHAR.to_string()), cx);
}
///Send a carriage return. TODO: May need to check the terminal mode.
fn carriage_return(&mut self, _: &Return, cx: &mut ViewContext<Self>) {
self.write_to_pty(&Input(CARRIAGE_RETURN_CHAR.to_string()), cx);
}
//Send the `left` key
fn left(&mut self, _: &Left, cx: &mut ViewContext<Self>) {
self.write_to_pty(&Input(LEFT_SEQ.to_string()), cx);
}
//Send the `right` key
fn right(&mut self, _: &Right, cx: &mut ViewContext<Self>) {
self.write_to_pty(&Input(RIGHT_SEQ.to_string()), cx);
}
@ -333,10 +352,7 @@ impl View for Terminal {
}
fn render(&mut self, cx: &mut gpui::RenderContext<'_, Self>) -> ElementBox {
TerminalEl::new(cx.handle())
.contained()
// .with_style(theme.terminal.container)
.boxed()
TerminalEl::new(cx.handle()).contained().boxed()
}
fn on_focus(&mut self, cx: &mut ViewContext<Self>) {
@ -354,7 +370,7 @@ impl Item for Terminal {
if self.has_bell {
flex.add_child(
Svg::new("icons/zap.svg")
Svg::new("icons/zap.svg") //TODO: Swap out for a better icon, or at least resize this
.with_color(tab_theme.label.text.color)
.constrained()
.with_width(search_theme.tab_icon_width)
@ -437,6 +453,7 @@ impl Item for Terminal {
}
}
//Convenience method for less lines
fn to_alac_rgb(color: Color) -> AlacRgb {
AlacRgb {
r: color.r,
@ -451,6 +468,8 @@ mod tests {
use crate::terminal_element::build_chunks;
use gpui::TestAppContext;
///Basic integration test, can we get the terminal to show up, execute a command,
//and produce noticable output?
#[gpui::test]
async fn test_terminal(cx: &mut TestAppContext) {
let terminal = cx.add_view(Default::default(), |cx| Terminal::new(cx, None));

448
crates/terminal/src/terminal_element.rs
View File

@ -14,39 +14,78 @@ use gpui::{
geometry::{rect::RectF, vector::vec2f},
json::json,
text_layout::Line,
Event, MouseRegion, PaintContext, Quad, WeakViewHandle,
Event, FontCache, MouseRegion, PaintContext, Quad, SizeConstraint, WeakViewHandle,
};
use itertools::Itertools;
use ordered_float::OrderedFloat;
use settings::Settings;
use std::rc::Rc;
use std::{iter, rc::Rc};
use theme::TerminalStyle;
use crate::{Input, ScrollTerminal, Terminal};
///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.;
///Used to display the grid as passed to Alacritty and the TTY.
///Useful for debugging inconsistencies between behavior and display
#[cfg(debug_assertions)]
const DEBUG_GRID: bool = false;
///The GPUI element that paints the terminal.
pub struct TerminalEl {
view: WeakViewHandle<Terminal>,
}
///Represents a span of cells in a single line in the terminal's grid.
///This is used for drawing background rectangles
#[derive(Debug, Default, Copy, Clone, Eq, PartialEq, PartialOrd, Ord)]
pub struct RectSpan {
start: i32,
end: i32,
line: usize,
color: Color,
}
///A background color span
impl RectSpan {
///Creates a new LineSpan. `start` must be <= `end`.
///If `start` == `end`, then this span is considered to be over a
/// single cell
fn new(start: i32, end: i32, line: usize, color: Color) -> RectSpan {
debug_assert!(start <= end);
RectSpan {
start,
end,
line,
color,
}
}
}
///Helper types so I don't mix these two up
struct CellWidth(f32);
struct LineHeight(f32);
///The information generated during layout that is nescessary for painting
pub struct LayoutState {
lines: Vec<Line>,
line_height: LineHeight,
em_width: CellWidth,
cursor: Option<(RectF, Color)>,
cur_size: SizeInfo,
background_color: Color,
background_rects: Vec<(RectF, Color)>, //Vec index == Line index for the LineSpan
}
impl TerminalEl {
pub fn new(view: WeakViewHandle<Terminal>) -> TerminalEl {
TerminalEl { view }
}
}
pub struct LayoutState {
lines: Vec<Line>,
line_height: f32,
em_width: f32,
cursor: Option<(RectF, Color)>,
cur_size: SizeInfo,
background_color: Color,
}
impl Element for TerminalEl {
type LayoutState = LayoutState;
type PaintState = ();
@ -56,73 +95,57 @@ impl Element for TerminalEl {
constraint: gpui::SizeConstraint,
cx: &mut gpui::LayoutContext,
) -> (gpui::geometry::vector::Vector2F, Self::LayoutState) {
let view = self.view.upgrade(cx).unwrap();
let size = constraint.max;
let settings = cx.global::<Settings>();
let editor_theme = &settings.theme.editor;
let font_cache = cx.font_cache();
//Set up text rendering
let text_style = TextStyle {
color: editor_theme.text_color,
font_family_id: settings.buffer_font_family,
font_family_name: font_cache.family_name(settings.buffer_font_family).unwrap(),
font_id: font_cache
.select_font(settings.buffer_font_family, &Default::default())
.unwrap(),
font_size: settings.buffer_font_size,
font_properties: Default::default(),
underline: Default::default(),
};
let line_height = font_cache.line_height(text_style.font_size);
let cell_width = font_cache.em_advance(text_style.font_id, text_style.font_size);
let new_size = SizeInfo::new(
size.x() - cell_width,
size.y(),
cell_width,
line_height,
0.,
0.,
false,
//Settings immutably borrows cx here for the settings and font cache
//and we need to modify the cx to resize the terminal. So instead of
//storing Settings or the font_cache(), we toss them ASAP and then reborrow later
let text_style = make_text_style(cx.font_cache(), cx.global::<Settings>());
let line_height = LineHeight(cx.font_cache().line_height(text_style.font_size));
let cell_width = CellWidth(
cx.font_cache()
.em_advance(text_style.font_id, text_style.font_size),
);
view.update(cx.app, |view, _cx| {
view.set_size(new_size);
});
let view_handle = self.view.upgrade(cx).unwrap();
let settings = cx.global::<Settings>();
let terminal_theme = &settings.theme.terminal;
let term = view.read(cx).term.lock();
//Tell the view our new size. Requires a mutable borrow of cx and the view
let cur_size = make_new_size(constraint, &cell_width, &line_height);
//Note that set_size locks and mutates the terminal.
//TODO: Would be nice to lock once for the whole of layout
view_handle.update(cx.app, |view, _cx| view.set_size(cur_size));
//Now that we're done with the mutable portion, grab the immutable settings and view again
let terminal_theme = &(cx.global::<Settings>()).theme.terminal;
let term = view_handle.read(cx).term.lock();
let content = term.renderable_content();
//And we're off! Begin layouting
let (chunks, line_count) = build_chunks(content.display_iter, &terminal_theme);
let shaped_lines = layout_highlighted_chunks(
chunks.iter().map(|(text, style)| (text.as_str(), *style)),
chunks
.iter()
.map(|(text, style, _)| (text.as_str(), *style)),
&text_style,
cx.text_layout_cache,
&cx.font_cache,
cx.font_cache(),
usize::MAX,
line_count,
);
let cursor_line = content.cursor.point.line.0 + content.display_offset as i32;
let mut cursor = None;
if let Some(layout_line) = cursor_line
.try_into()
.ok()
.and_then(|cursor_line: usize| shaped_lines.get(cursor_line))
{
let cursor_x = layout_line.x_for_index(content.cursor.point.column.0);
cursor = Some((
RectF::new(
vec2f(cursor_x, cursor_line as f32 * line_height),
vec2f(cell_width, line_height),
),
terminal_theme.cursor,
));
}
let backgrounds = chunks
.iter()
.filter(|(_, _, line_span)| line_span != &RectSpan::default())
.map(|(_, _, line_span)| *line_span)
.collect();
let background_rects = make_background_rects(backgrounds, &shaped_lines, &line_height);
let cursor = make_cursor_rect(
content.cursor.point,
&shaped_lines,
content.display_offset,
&line_height,
&cell_width,
)
.map(|cursor_rect| (cursor_rect, terminal_theme.cursor));
(
constraint.max,
@ -131,7 +154,8 @@ impl Element for TerminalEl {
line_height,
em_width: cell_width,
cursor,
cur_size: new_size,
cur_size,
background_rects,
background_color: terminal_theme.background,
},
)
@ -144,48 +168,53 @@ impl Element for TerminalEl {
layout: &mut Self::LayoutState,
cx: &mut gpui::PaintContext,
) -> Self::PaintState {
//Setup element stuff
cx.scene.push_layer(Some(visible_bounds));
//Elements are ephemeral, only at paint time do we know what could be clicked by a mouse
cx.scene.push_mouse_region(MouseRegion {
view_id: self.view.id(),
discriminant: None,
bounds: visible_bounds,
hover: None,
mouse_down: Some(Rc::new(|_, cx| cx.focus_parent_view())),
click: None,
right_mouse_down: None,
right_click: None,
drag: None,
mouse_down_out: None,
right_mouse_down_out: None,
bounds: visible_bounds,
..Default::default()
});
//Background
let origin = bounds.origin() + vec2f(layout.em_width.0, 0.);
//Start us off with a nice simple background color
cx.scene.push_quad(Quad {
bounds: visible_bounds,
bounds: RectF::new(bounds.origin(), bounds.size()),
background: Some(layout.background_color),
border: Default::default(),
corner_radius: 0.,
});
let origin = bounds.origin() + vec2f(layout.em_width, 0.); //Padding
//Draw cell backgrounds
for background_rect in &layout.background_rects {
let new_origin = origin + background_rect.0.origin();
cx.scene.push_quad(Quad {
bounds: RectF::new(new_origin, background_rect.0.size()),
background: Some(background_rect.1),
border: Default::default(),
corner_radius: 0.,
})
}
let mut line_origin = origin;
//Draw text
let mut line_origin = origin.clone();
for line in &layout.lines {
let boundaries = RectF::new(line_origin, vec2f(bounds.width(), layout.line_height));
let boundaries = RectF::new(line_origin, vec2f(bounds.width(), layout.line_height.0));
if boundaries.intersects(visible_bounds) {
line.paint(line_origin, visible_bounds, layout.line_height, cx);
line.paint(line_origin, visible_bounds, layout.line_height.0, cx);
}
line_origin.set_y(boundaries.max_y());
}
//Draw cursor
if let Some((c, color)) = layout.cursor {
let new_origin = origin + c.origin();
let new_cursor = RectF::new(new_origin, c.size());
cx.scene.push_quad(Quad {
bounds: new_cursor,
bounds: RectF::new(new_origin, c.size()),
background: Some(color),
border: Default::default(),
corner_radius: 0.,
@ -212,26 +241,22 @@ impl Element for TerminalEl {
match event {
Event::ScrollWheel {
delta, position, ..
} => {
if visible_bounds.contains_point(*position) {
} => visible_bounds
.contains_point(*position)
.then(|| {
let vertical_scroll =
(delta.y() / layout.line_height) * ALACRITTY_SCROLL_MULTIPLIER;
(delta.y() / layout.line_height.0) * ALACRITTY_SCROLL_MULTIPLIER;
cx.dispatch_action(ScrollTerminal(vertical_scroll.round() as i32));
true
} else {
false
}
}
})
.is_some(),
Event::KeyDown {
input: Some(input), ..
} => {
if cx.is_parent_view_focused() {
} => cx
.is_parent_view_focused()
.then(|| {
cx.dispatch_action(Input(input.to_string()));
true
} else {
false
}
}
})
.is_some(),
_ => false,
}
}
@ -249,67 +274,149 @@ impl Element for TerminalEl {
}
}
fn make_text_style(font_cache: &FontCache, settings: &Settings) -> TextStyle {
TextStyle {
color: settings.theme.editor.text_color,
font_family_id: settings.buffer_font_family,
font_family_name: font_cache.family_name(settings.buffer_font_family).unwrap(),
font_id: font_cache
.select_font(settings.buffer_font_family, &Default::default())
.unwrap(),
font_size: settings.buffer_font_size,
font_properties: Default::default(),
underline: Default::default(),
}
}
fn make_new_size(
constraint: SizeConstraint,
cell_width: &CellWidth,
line_height: &LineHeight,
) -> SizeInfo {
SizeInfo::new(
constraint.max.x() - cell_width.0,
constraint.max.y(),
cell_width.0,
line_height.0,
0.,
0.,
false,
)
}
///In a single pass, this function generates the background and foreground color info for every item in the grid.
pub(crate) fn build_chunks(
grid_iterator: GridIterator<Cell>,
theme: &TerminalStyle,
) -> (Vec<(String, Option<HighlightStyle>)>, usize) {
let mut lines: Vec<(String, Option<HighlightStyle>)> = vec![];
let mut last_line = 0;
let mut line_count = 1;
let mut cur_chunk = String::new();
let mut cur_highlight = HighlightStyle {
color: Some(Color::white()),
..Default::default()
};
for cell in grid_iterator {
let Indexed {
point: Point { line, .. },
cell: Cell {
c, fg, flags, .. // TODO: Add bg and flags
}, //TODO: Learn what 'CellExtra does'
} = cell;
let new_highlight = make_style_from_cell(fg, flags, theme);
if line != last_line {
) -> (Vec<(String, Option<HighlightStyle>, RectSpan)>, usize) {
let mut line_count: usize = 0;
//Every `group_by()` -> `into_iter()` pair needs to be seperated by a local variable so
//rust knows where to put everything.
//Start by grouping by lines
let lines = grid_iterator.group_by(|i| i.point.line.0);
let result = lines
.into_iter()
.map(|(_, line)| {
line_count += 1;
cur_chunk.push('\n');
last_line = line.0;
}
let mut col_index = 0;
if new_highlight != cur_highlight {
lines.push((cur_chunk.clone(), Some(cur_highlight.clone())));
cur_chunk.clear();
cur_highlight = new_highlight;
}
cur_chunk.push(*c)
}
lines.push((cur_chunk, Some(cur_highlight)));
(lines, line_count)
}
fn make_style_from_cell(fg: &AnsiColor, flags: &Flags, style: &TerminalStyle) -> HighlightStyle {
let fg = Some(alac_color_to_gpui_color(fg, style));
let underline = if flags.contains(Flags::UNDERLINE) {
Some(Underline {
color: fg,
squiggly: false,
thickness: OrderedFloat(1.),
//Then group by style
let chunks = line.group_by(|i| cell_style(&i, theme));
chunks
.into_iter()
.map(|(style, fragment)| {
//And assemble the styled fragment into it's background and foreground information
let str_fragment = fragment.map(|indexed| indexed.c).collect::<String>();
let start = col_index;
let end = start + str_fragment.len() as i32;
col_index = end;
(
str_fragment,
Some(style.0),
RectSpan::new(start, end, line_count - 1, style.1), //Line count -> Line index
)
})
//Add a \n to the end, as we're using text layouting rather than grid layouts
.chain(iter::once(("\n".to_string(), None, Default::default())))
.collect::<Vec<(String, Option<HighlightStyle>, RectSpan)>>()
})
} else {
None
};
HighlightStyle {
color: fg,
underline,
..Default::default()
}
//We have a Vec<Vec<>> (Vec of lines of styled chunks), flatten to just Vec<> (the styled chunks)
.flatten()
.collect::<Vec<(String, Option<HighlightStyle>, RectSpan)>>();
(result, line_count)
}
fn alac_color_to_gpui_color(allac_color: &AnsiColor, style: &TerminalStyle) -> Color {
match allac_color {
///Convert a RectSpan in terms of character offsets, into RectFs of exact offsets
fn make_background_rects(
backgrounds: Vec<RectSpan>,
shaped_lines: &Vec<Line>,
line_height: &LineHeight,
) -> Vec<(RectF, Color)> {
backgrounds
.into_iter()
.map(|line_span| {
//This should always be safe, as the shaped lines and backgrounds where derived
//At the same time earlier
let line = shaped_lines
.get(line_span.line)
.expect("Background line_num did not correspond to a line number");
let x = line.x_for_index(line_span.start as usize);
let width = line.x_for_index(line_span.end as usize) - x;
(
RectF::new(
vec2f(x, line_span.line as f32 * line_height.0),
vec2f(width, line_height.0),
),
line_span.color,
)
})
.collect::<Vec<(RectF, Color)>>()
}
///Create the rectangle for a cursor, exactly positioned according to the text
fn make_cursor_rect(
cursor_point: Point,
shaped_lines: &Vec<Line>,
display_offset: usize,
line_height: &LineHeight,
cell_width: &CellWidth,
) -> Option<RectF> {
let cursor_line = cursor_point.line.0 as usize + display_offset;
shaped_lines.get(cursor_line).map(|layout_line| {
let cursor_x = layout_line.x_for_index(cursor_point.column.0);
RectF::new(
vec2f(cursor_x, cursor_line as f32 * line_height.0),
vec2f(cell_width.0, line_height.0),
)
})
}
///Convert the Alacritty cell styles to GPUI text styles and background color
fn cell_style(indexed: &Indexed<&Cell>, style: &TerminalStyle) -> (HighlightStyle, Color) {
let flags = indexed.cell.flags;
let fg = Some(convert_color(&indexed.cell.fg, style));
let bg = convert_color(&indexed.cell.bg, style);
let underline = flags.contains(Flags::UNDERLINE).then(|| Underline {
color: fg,
squiggly: false,
thickness: OrderedFloat(1.),
});
(
HighlightStyle {
color: fg,
underline,
..Default::default()
},
bg,
)
}
///Converts a 2, 8, or 24 bit color ANSI color to the GPUI equivalent
fn convert_color(alac_color: &AnsiColor, style: &TerminalStyle) -> Color {
match alac_color {
//Named and theme defined colors
alacritty_terminal::ansi::Color::Named(n) => match n {
alacritty_terminal::ansi::NamedColor::Black => style.black,
alacritty_terminal::ansi::NamedColor::Red => style.red,
@ -340,14 +447,18 @@ fn alac_color_to_gpui_color(allac_color: &AnsiColor, style: &TerminalStyle) -> C
alacritty_terminal::ansi::NamedColor::DimWhite => style.dim_white,
alacritty_terminal::ansi::NamedColor::BrightForeground => style.bright_foreground,
alacritty_terminal::ansi::NamedColor::DimForeground => style.dim_foreground,
}, //Theme defined
alacritty_terminal::ansi::Color::Spec(rgb) => Color::new(rgb.r, rgb.g, rgb.b, 1),
alacritty_terminal::ansi::Color::Indexed(i) => get_color_at_index(i, style), //Color cube weirdness
},
//'True' colors
alacritty_terminal::ansi::Color::Spec(rgb) => Color::new(rgb.r, rgb.g, rgb.b, u8::MAX),
//8 bit, indexed colors
alacritty_terminal::ansi::Color::Indexed(i) => get_color_at_index(i, style),
}
}
///Converts an 8 bit ANSI color to it's GPUI equivalent.
pub fn get_color_at_index(index: &u8, style: &TerminalStyle) -> Color {
match index {
//0-15 are the same as the named colors above
0 => style.black,
1 => style.red,
2 => style.green,
@ -364,16 +475,17 @@ pub fn get_color_at_index(index: &u8, style: &TerminalStyle) -> Color {
13 => style.bright_magenta,
14 => style.bright_cyan,
15 => style.bright_white,
//16-231 are mapped to their RGB colors on a 0-5 range per channel
16..=231 => {
let (r, g, b) = rgb_for_index(index); //Split the index into it's rgb components
let step = (u8::MAX as f32 / 5.).round() as u8; //Split the GPUI range into 5 chunks
Color::new(r * step, g * step, b * step, 1) //Map the rgb components to GPUI's range
let (r, g, b) = rgb_for_index(index); //Split the index into it's ANSI-RGB components
let step = (u8::MAX as f32 / 5.).floor() as u8; //Split the RGB range into 5 chunks, with floor so no overflow
Color::new(r * step, g * step, b * step, u8::MAX) //Map the ANSI-RGB components to an RGB color
}
//Grayscale from black to white, 0 to 24
//232-255 are a 24 step grayscale from black to white
232..=255 => {
let i = 24 - (index - 232); //Align index to 24..0
let step = (u8::MAX as f32 / 24.).round() as u8; //Split the 256 range grayscale into 24 chunks
Color::new(i * step, i * step, i * step, 1) //Map the rgb components to GPUI's range
let i = index - 232; //Align index to 0..24
let step = (u8::MAX as f32 / 24.).floor() as u8; //Split the RGB grayscale values into 24 chunks
Color::new(i * step, i * step, i * step, u8::MAX) //Map the ANSI-grayscale components to the RGB-grayscale
}
}
}
@ -395,15 +507,17 @@ fn rgb_for_index(i: &u8) -> (u8, u8, u8) {
(r, g, b)
}
///Draws the grid as Alacritty sees it. Useful for checking if there is an inconsistency between
///Display and conceptual grid.
#[cfg(debug_assertions)]
fn draw_debug_grid(bounds: RectF, layout: &mut LayoutState, cx: &mut PaintContext) {
let width = layout.cur_size.width();
let height = layout.cur_size.height();
//Alacritty uses 'as usize', so shall we.
for col in 0..(width / layout.em_width).round() as usize {
for col in 0..(width / layout.em_width.0).round() as usize {
cx.scene.push_quad(Quad {
bounds: RectF::new(
bounds.origin() + vec2f((col + 1) as f32 * layout.em_width, 0.),
bounds.origin() + vec2f((col + 1) as f32 * layout.em_width.0, 0.),
vec2f(1., height),
),
background: Some(Color::green()),
@ -411,10 +525,10 @@ fn draw_debug_grid(bounds: RectF, layout: &mut LayoutState, cx: &mut PaintContex
corner_radius: 0.,
});
}
for row in 0..((height / layout.line_height) + 1.0).round() as usize {
for row in 0..((height / layout.line_height.0) + 1.0).round() as usize {
cx.scene.push_quad(Quad {
bounds: RectF::new(
bounds.origin() + vec2f(layout.em_width, row as f32 * layout.line_height),
bounds.origin() + vec2f(layout.em_width.0, row as f32 * layout.line_height.0),
vec2f(width, 1.),
),
background: Some(Color::green()),

19
crates/terminal/truecolor.sh Executable file
View File

@ -0,0 +1,19 @@
#!/bin/bash
# Copied from: https://unix.stackexchange.com/a/696756
# Based on: https://gist.github.com/XVilka/8346728 and https://unix.stackexchange.com/a/404415/395213
awk -v term_cols="${width:-$(tput cols || echo 80)}" -v term_lines="${height:-1}" 'BEGIN{
s="/\\";
total_cols=term_cols*term_lines;
for (colnum = 0; colnum<total_cols; colnum++) {
r = 255-(colnum*255/total_cols);
g = (colnum*510/total_cols);
b = (colnum*255/total_cols);
if (g>255) g = 510-g;
printf "\033[48;2;%d;%d;%dm", r,g,b;
printf "\033[38;2;%d;%d;%dm", 255-r,255-g,255-b;
printf "%s\033[0m", substr(s,colnum%2+1,1);
if (colnum%term_cols==term_cols) printf "\n";
}
printf "\n";
}'