739 lines
24 KiB
Rust
739 lines
24 KiB
Rust
use alacritty_terminal::{
|
||
event::{Event, EventListener, Notify, OnResize, WindowSize},
|
||
event_loop::{EventLoop, Msg, Notifier},
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grid::Dimensions,
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||
index::{Boundary, Column, Direction, Line, Point, Side},
|
||
selection::{Selection, SelectionType},
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||
sync::FairMutex,
|
||
term::{
|
||
cell::Flags,
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||
color::{self, Colors},
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||
search::RegexSearch,
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||
viewport_to_point, Config, TermMode,
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||
},
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||
tty::{self, Options},
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vte::ansi::{Color, NamedColor, Rgb},
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Term,
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};
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use cosmic::{
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iced::advanced::graphics::text::font_system,
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widget::{pane_grid, segmented_button},
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};
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use cosmic_text::{
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Attrs, AttrsList, Buffer, BufferLine, CacheKeyFlags, Family, Metrics, Shaping, Weight, Wrap,
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};
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use std::{
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borrow::Cow,
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collections::HashMap,
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mem,
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sync::{Arc, Weak},
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time::Instant,
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};
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use tokio::sync::mpsc;
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||
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pub use alacritty_terminal::grid::Scroll as TerminalScroll;
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use crate::config::Config as AppConfig;
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#[derive(Clone, Copy, Debug)]
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pub struct Size {
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pub width: u32,
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pub height: u32,
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pub cell_width: f32,
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pub cell_height: f32,
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}
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impl Dimensions for Size {
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fn total_lines(&self) -> usize {
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self.screen_lines()
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}
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fn screen_lines(&self) -> usize {
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((self.height as f32) / self.cell_height).floor() as usize
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}
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fn columns(&self) -> usize {
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((self.width as f32) / self.cell_width).floor() as usize
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}
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}
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impl From<Size> for WindowSize {
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fn from(size: Size) -> Self {
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Self {
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num_lines: size.screen_lines() as u16,
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num_cols: size.columns() as u16,
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cell_width: size.cell_width as u16,
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cell_height: size.cell_height as u16,
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}
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}
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}
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#[derive(Clone)]
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pub struct EventProxy(
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pane_grid::Pane,
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segmented_button::Entity,
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mpsc::Sender<(pane_grid::Pane, segmented_button::Entity, Event)>,
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);
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impl EventListener for EventProxy {
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fn send_event(&self, event: Event) {
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//TODO: handle error
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let _ = self.2.blocking_send((self.0, self.1, event));
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}
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}
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fn as_bright(mut color: Color) -> Color {
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if let Color::Named(named) = color {
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color = Color::Named(named.to_bright());
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}
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color
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}
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fn as_dim(mut color: Color) -> Color {
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if let Color::Named(named) = color {
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color = Color::Named(named.to_dim());
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}
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color
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}
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fn convert_color(colors: &Colors, color: Color) -> cosmic_text::Color {
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let rgb = match color {
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Color::Named(named_color) => match colors[named_color] {
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Some(rgb) => rgb,
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None => {
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log::warn!("missing named color {:?}", named_color);
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Rgb::default()
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}
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},
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Color::Spec(rgb) => rgb,
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Color::Indexed(index) => match colors[index as usize] {
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Some(rgb) => rgb,
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None => {
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log::warn!("missing indexed color {}", index);
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Rgb::default()
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}
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},
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};
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cosmic_text::Color::rgb(rgb.r, rgb.g, rgb.b)
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}
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fn linear_color(color: cosmic_text::Color) -> cosmic_text::Color {
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// As described in: https://en.wikipedia.org/wiki/SRGB#The_reverse_transformation
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fn linear_component(byte: u8) -> u8 {
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let float = byte as f32 / 255.0;
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let linear = if float < 0.04045 {
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float / 12.92
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} else {
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((float + 0.055) / 1.055).powf(2.4)
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};
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(linear * 255.0).round() as u8
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}
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cosmic_text::Color::rgba(
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linear_component(color.r()),
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linear_component(color.g()),
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linear_component(color.b()),
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color.a(),
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)
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}
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type TabModel = segmented_button::Model<segmented_button::SingleSelect>;
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pub struct TerminalPaneGrid {
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pub panes: pane_grid::State<TabModel>,
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pub panes_created: usize,
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pub focus: pane_grid::Pane,
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}
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impl TerminalPaneGrid {
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pub fn new(model: TabModel) -> Self {
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let (panes, pane) = pane_grid::State::new(model);
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let mut terminal_ids = HashMap::new();
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terminal_ids.insert(pane, cosmic::widget::Id::unique());
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Self {
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panes,
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panes_created: 1,
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focus: pane,
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}
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}
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pub fn active(&self) -> Option<&TabModel> {
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self.panes.get(self.focus)
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}
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pub fn active_mut(&mut self) -> Option<&mut TabModel> {
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self.panes.get_mut(self.focus)
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}
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}
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pub struct Terminal {
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default_attrs: Attrs<'static>,
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buffer: Arc<Buffer>,
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size: Size,
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pub term: Arc<FairMutex<Term<EventProxy>>>,
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colors: Colors,
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dim_font_weight: Weight,
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bold_font_weight: Weight,
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use_bright_bold: bool,
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notifier: Notifier,
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pub context_menu: Option<cosmic::iced::Point>,
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pub needs_update: bool,
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search_regex_opt: Option<RegexSearch>,
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search_value: String,
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}
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impl Terminal {
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//TODO: error handling
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pub fn new(
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pane: pane_grid::Pane,
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entity: segmented_button::Entity,
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event_tx: mpsc::Sender<(pane_grid::Pane, segmented_button::Entity, Event)>,
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config: Config,
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options: Options,
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app_config: &AppConfig,
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colors: Colors,
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) -> Self {
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let font_stretch = app_config.typed_font_stretch();
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let font_weight = app_config.font_weight;
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let dim_font_weight = app_config.dim_font_weight;
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let bold_font_weight = app_config.bold_font_weight;
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let use_bright_bold = app_config.use_bright_bold;
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let metrics = Metrics::new(14.0, 20.0);
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//TODO: set color to default fg
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let default_attrs = Attrs::new()
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.family(Family::Monospace)
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.weight(Weight(font_weight))
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.stretch(font_stretch)
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.color(convert_color(&colors, Color::Named(NamedColor::Foreground)))
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.metadata(convert_color(&colors, Color::Named(NamedColor::Background)).0 as usize);
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let mut buffer = Buffer::new_empty(metrics);
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let (cell_width, cell_height) = {
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||
let mut font_system = font_system().write().unwrap();
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let mut font_system = font_system.raw();
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buffer.set_wrap(&mut font_system, Wrap::None);
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// Use size of space to determine cell size
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buffer.set_text(&mut font_system, " ", default_attrs, Shaping::Advanced);
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let layout = buffer.line_layout(&mut font_system, 0).unwrap();
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(layout[0].w, metrics.line_height)
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};
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let size = Size {
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width: (80.0 * cell_width).ceil() as u32,
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height: (24.0 * cell_height).ceil() as u32,
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cell_width,
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cell_height,
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};
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let event_proxy = EventProxy(pane, entity, event_tx);
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let term = Arc::new(FairMutex::new(Term::new(
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config,
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&size,
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event_proxy.clone(),
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)));
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||
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let window_id = 0;
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let pty = tty::new(&options, size.into(), window_id).unwrap();
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let pty_event_loop = EventLoop::new(term.clone(), event_proxy, pty, options.hold, false);
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let notifier = Notifier(pty_event_loop.channel());
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let _pty_join_handle = pty_event_loop.spawn();
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Self {
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colors,
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dim_font_weight: Weight(dim_font_weight),
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bold_font_weight: Weight(bold_font_weight),
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use_bright_bold,
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default_attrs,
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buffer: Arc::new(buffer),
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||
size,
|
||
term,
|
||
notifier,
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context_menu: None,
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||
needs_update: true,
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||
search_regex_opt: None,
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||
search_value: String::new(),
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}
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||
}
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||
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pub fn buffer_weak(&self) -> Weak<Buffer> {
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||
Arc::downgrade(&self.buffer)
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||
}
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||
|
||
/// Get the internal [`Buffer`]
|
||
pub fn with_buffer<F: FnOnce(&Buffer) -> T, T>(&self, f: F) -> T {
|
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f(&self.buffer)
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||
}
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||
|
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/// Get the internal [`Buffer`], mutably
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pub fn with_buffer_mut<F: FnOnce(&mut Buffer) -> T, T>(&mut self, f: F) -> T {
|
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f(Arc::make_mut(&mut self.buffer))
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||
}
|
||
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pub fn colors(&self) -> &Colors {
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&self.colors
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||
}
|
||
|
||
pub fn default_attrs(&self) -> &Attrs<'static> {
|
||
&self.default_attrs
|
||
}
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||
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||
pub fn size(&self) -> Size {
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self.size
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||
}
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||
|
||
pub fn redraw(&self) -> bool {
|
||
self.buffer.redraw()
|
||
}
|
||
|
||
pub fn set_redraw(&mut self, redraw: bool) {
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self.with_buffer_mut(|buffer| buffer.set_redraw(redraw));
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||
}
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||
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pub fn input_no_scroll<I: Into<Cow<'static, [u8]>>>(&self, input: I) {
|
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self.notifier.notify(input);
|
||
}
|
||
|
||
pub fn input_scroll<I: Into<Cow<'static, [u8]>>>(&self, input: I) {
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self.input_no_scroll(input);
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self.scroll(TerminalScroll::Bottom);
|
||
}
|
||
|
||
pub fn paste(&self, value: String) {
|
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// This code is ported from alacritty
|
||
let bracketed_paste = {
|
||
let term = self.term.lock();
|
||
term.mode().contains(TermMode::BRACKETED_PASTE)
|
||
};
|
||
if bracketed_paste {
|
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self.input_no_scroll(&b"\x1b[200~"[..]);
|
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self.input_no_scroll(value.replace('\x1b', "").into_bytes());
|
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self.input_scroll(&b"\x1b[201~"[..]);
|
||
} else {
|
||
// In non-bracketed (ie: normal) mode, terminal applications cannot distinguish
|
||
// pasted data from keystrokes.
|
||
// In theory, we should construct the keystrokes needed to produce the data we are
|
||
// pasting... since that's neither practical nor sensible (and probably an impossible
|
||
// task to solve in a general way), we'll just replace line breaks (windows and unix
|
||
// style) with a single carriage return (\r, which is what the Enter key produces).
|
||
self.input_scroll(value.replace("\r\n", "\r").replace('\n', "\r").into_bytes());
|
||
}
|
||
}
|
||
|
||
pub fn resize(&mut self, width: u32, height: u32) {
|
||
if width != self.size.width || height != self.size.height {
|
||
let instant = Instant::now();
|
||
|
||
self.size.width = width;
|
||
self.size.height = height;
|
||
|
||
self.notifier.on_resize(self.size.into());
|
||
self.term.lock().resize(self.size);
|
||
|
||
self.with_buffer_mut(|buffer| {
|
||
let mut font_system = font_system().write().unwrap();
|
||
buffer.set_size(font_system.raw(), width as f32, height as f32);
|
||
});
|
||
|
||
log::debug!("resize {:?}", instant.elapsed());
|
||
}
|
||
}
|
||
|
||
pub fn scroll(&self, scroll: TerminalScroll) {
|
||
self.term.lock().scroll_display(scroll);
|
||
}
|
||
|
||
pub fn scroll_to(&self, ratio: f32) {
|
||
let mut term = self.term.lock();
|
||
let grid = term.grid();
|
||
let total = grid.history_size() + grid.screen_lines();
|
||
let old_display_offset = grid.display_offset() as i32;
|
||
let new_display_offset =
|
||
((total as f32) * (1.0 - ratio)) as i32 - grid.screen_lines() as i32;
|
||
term.scroll_display(TerminalScroll::Delta(
|
||
new_display_offset - old_display_offset,
|
||
));
|
||
}
|
||
|
||
pub fn scrollbar(&self) -> Option<(f32, f32)> {
|
||
let term = self.term.lock();
|
||
let grid = term.grid();
|
||
if grid.history_size() > 0 {
|
||
let total = grid.history_size() + grid.screen_lines();
|
||
let start = total - grid.display_offset() - grid.screen_lines();
|
||
let end = total - grid.display_offset();
|
||
Some((
|
||
(start as f32) / (total as f32),
|
||
(end as f32) / (total as f32),
|
||
))
|
||
} else {
|
||
None
|
||
}
|
||
}
|
||
|
||
pub fn search(&mut self, value: &str, forwards: bool) {
|
||
//TODO: set max lines, run in thread?
|
||
{
|
||
let mut term = self.term.lock();
|
||
|
||
if self.search_value != value {
|
||
match RegexSearch::new(value) {
|
||
Ok(search_regex) => {
|
||
self.search_regex_opt = Some(search_regex);
|
||
self.search_value = value.to_string();
|
||
term.selection = None;
|
||
}
|
||
Err(err) => {
|
||
log::warn!("failed to parse regex {:?}: {}", value, err);
|
||
return;
|
||
}
|
||
}
|
||
}
|
||
|
||
let search_regex = match &mut self.search_regex_opt {
|
||
Some(some) => some,
|
||
None => return,
|
||
};
|
||
|
||
// Determine search origin
|
||
let grid = term.grid();
|
||
let search_origin = match term
|
||
.selection
|
||
.as_ref()
|
||
.and_then(|selection| selection.to_range(&term))
|
||
{
|
||
Some(range) => {
|
||
//TODO: determine correct search_origin, along with side below
|
||
if forwards {
|
||
range.end.add(grid, Boundary::Grid, 1)
|
||
} else {
|
||
range.start.sub(grid, Boundary::Grid, 1)
|
||
}
|
||
}
|
||
None => {
|
||
if forwards {
|
||
Point::new(Line(-(grid.history_size() as i32)), Column(0))
|
||
} else {
|
||
Point::new(
|
||
Line(grid.screen_lines() as i32 - 1),
|
||
Column(grid.columns() - 1),
|
||
)
|
||
}
|
||
}
|
||
};
|
||
|
||
// Find next search match
|
||
match term.search_next(
|
||
search_regex,
|
||
search_origin,
|
||
if forwards {
|
||
Direction::Right
|
||
} else {
|
||
Direction::Left
|
||
},
|
||
//TODO: determine correct side, along with search_origin above
|
||
if forwards { Side::Left } else { Side::Right },
|
||
None,
|
||
) {
|
||
Some(search_match) => {
|
||
// Scroll to match
|
||
if forwards {
|
||
term.scroll_to_point(*search_match.end());
|
||
} else {
|
||
term.scroll_to_point(*search_match.start());
|
||
}
|
||
|
||
// Set selection to match
|
||
let mut selection =
|
||
Selection::new(SelectionType::Simple, *search_match.start(), Side::Left);
|
||
selection.update(*search_match.end(), Side::Right);
|
||
term.selection = Some(selection);
|
||
}
|
||
None => {}
|
||
}
|
||
}
|
||
|
||
self.update();
|
||
}
|
||
|
||
pub fn select_all(&mut self) {
|
||
{
|
||
let mut term = self.term.lock();
|
||
let grid = term.grid();
|
||
let start = Point::new(Line(-(grid.history_size() as i32)), Column(0));
|
||
let end = Point::new(
|
||
Line(grid.screen_lines() as i32 - 1),
|
||
Column(grid.columns() - 1),
|
||
);
|
||
let mut selection = Selection::new(SelectionType::Lines, start, Side::Left);
|
||
selection.update(end, Side::Right);
|
||
term.selection = Some(selection);
|
||
}
|
||
self.update();
|
||
}
|
||
|
||
pub fn set_config(
|
||
&mut self,
|
||
config: &AppConfig,
|
||
themes: &HashMap<String, Colors>,
|
||
zoom_adj: i8,
|
||
) {
|
||
let mut update_cell_size = false;
|
||
let mut update = false;
|
||
|
||
if self.default_attrs.stretch != config.typed_font_stretch() {
|
||
self.default_attrs = self.default_attrs.stretch(config.typed_font_stretch());
|
||
update_cell_size = true;
|
||
}
|
||
|
||
if self.default_attrs.weight.0 != config.font_weight {
|
||
self.default_attrs = self.default_attrs.weight(Weight(config.font_weight));
|
||
update_cell_size = true;
|
||
}
|
||
|
||
if self.dim_font_weight.0 != config.dim_font_weight {
|
||
self.dim_font_weight = Weight(config.dim_font_weight);
|
||
update_cell_size = true;
|
||
}
|
||
|
||
if self.bold_font_weight.0 != config.font_weight {
|
||
self.bold_font_weight = Weight(config.bold_font_weight);
|
||
update_cell_size = true;
|
||
}
|
||
|
||
if self.use_bright_bold != config.use_bright_bold {
|
||
self.use_bright_bold = config.use_bright_bold;
|
||
update_cell_size = true;
|
||
}
|
||
|
||
let metrics = config.metrics(zoom_adj);
|
||
if metrics != self.buffer.metrics() {
|
||
{
|
||
let mut font_system = font_system().write().unwrap();
|
||
self.with_buffer_mut(|buffer| buffer.set_metrics(font_system.raw(), metrics));
|
||
}
|
||
update_cell_size = true;
|
||
}
|
||
|
||
if let Some(colors) = themes.get(config.syntax_theme()) {
|
||
let mut changed = false;
|
||
for i in 0..color::COUNT {
|
||
if self.colors[i] != colors[i] {
|
||
self.colors[i] = colors[i];
|
||
changed = true;
|
||
}
|
||
}
|
||
if changed {
|
||
self.default_attrs = Attrs::new()
|
||
.family(Family::Monospace)
|
||
.weight(Weight(config.font_weight))
|
||
.stretch(config.typed_font_stretch())
|
||
.color(convert_color(&colors, Color::Named(NamedColor::Foreground)))
|
||
.metadata(
|
||
convert_color(&colors, Color::Named(NamedColor::Background)).0 as usize,
|
||
);
|
||
update = true;
|
||
}
|
||
}
|
||
|
||
if update_cell_size {
|
||
self.update_cell_size();
|
||
} else if update {
|
||
self.update();
|
||
}
|
||
}
|
||
|
||
pub fn update_cell_size(&mut self) {
|
||
let default_attrs = self.default_attrs;
|
||
let (cell_width, cell_height) = {
|
||
let mut font_system = font_system().write().unwrap();
|
||
self.with_buffer_mut(|buffer| {
|
||
buffer.set_wrap(font_system.raw(), Wrap::None);
|
||
|
||
// Use size of space to determine cell size
|
||
buffer.set_text(font_system.raw(), " ", default_attrs, Shaping::Advanced);
|
||
let layout = buffer.line_layout(font_system.raw(), 0).unwrap();
|
||
(layout[0].w, buffer.metrics().line_height)
|
||
})
|
||
};
|
||
|
||
let old_size = self.size;
|
||
self.size = Size {
|
||
width: 0,
|
||
height: 0,
|
||
cell_width,
|
||
cell_height,
|
||
};
|
||
self.resize(old_size.width, old_size.height);
|
||
|
||
self.update();
|
||
}
|
||
|
||
pub fn update(&mut self) -> bool {
|
||
// LEFT‑TO‑RIGHT ISOLATE character.
|
||
// This will be added to the beginning of lines to force the shaper to treat detected RTL
|
||
// lines as LTR. RTL text would still be rendered correctly. But this fixes the wrong
|
||
// behavior of it being aligned to the right.
|
||
const LRI: char = '\u{2066}';
|
||
|
||
let instant = Instant::now();
|
||
|
||
//TODO: is redraw needed after all events?
|
||
//TODO: use LineDamageBounds
|
||
{
|
||
let buffer = Arc::make_mut(&mut self.buffer);
|
||
|
||
let mut line_i = 0;
|
||
let mut last_point = None;
|
||
let mut text = String::from(LRI);
|
||
let mut attrs_list = AttrsList::new(self.default_attrs);
|
||
{
|
||
let term = self.term.lock();
|
||
let grid = term.grid();
|
||
for indexed in grid.display_iter() {
|
||
if indexed.point.line != last_point.unwrap_or(indexed.point).line {
|
||
while line_i >= buffer.lines.len() {
|
||
buffer.lines.push(BufferLine::new(
|
||
"",
|
||
AttrsList::new(self.default_attrs),
|
||
Shaping::Advanced,
|
||
));
|
||
buffer.set_redraw(true);
|
||
}
|
||
|
||
if buffer.lines[line_i].set_text(text.clone(), attrs_list.clone()) {
|
||
buffer.set_redraw(true);
|
||
}
|
||
line_i += 1;
|
||
|
||
text.clear();
|
||
text.push(LRI);
|
||
attrs_list.clear_spans();
|
||
}
|
||
//TODO: use indexed.point.column?
|
||
|
||
//TODO: skip leading spacer?
|
||
if indexed.cell.flags.contains(Flags::WIDE_CHAR_SPACER) {
|
||
// Skip wide spacers (cells after wide characters)
|
||
continue;
|
||
}
|
||
|
||
let start = text.len();
|
||
text.push(indexed.cell.c);
|
||
if let Some(zerowidth) = indexed.cell.zerowidth() {
|
||
for &c in zerowidth {
|
||
text.push(c);
|
||
}
|
||
}
|
||
let end = text.len();
|
||
|
||
let mut attrs = self.default_attrs;
|
||
|
||
let cell_fg = if indexed.cell.flags.contains(Flags::DIM) {
|
||
as_dim(indexed.cell.fg)
|
||
} else if self.use_bright_bold && indexed.cell.flags.contains(Flags::BOLD) {
|
||
as_bright(indexed.cell.fg)
|
||
} else {
|
||
indexed.cell.fg
|
||
};
|
||
|
||
let (mut fg, mut bg) = if indexed.cell.flags.contains(Flags::INVERSE) {
|
||
(
|
||
convert_color(&self.colors, indexed.cell.bg),
|
||
convert_color(&self.colors, cell_fg),
|
||
)
|
||
} else {
|
||
(
|
||
convert_color(&self.colors, cell_fg),
|
||
convert_color(&self.colors, indexed.cell.bg),
|
||
)
|
||
};
|
||
|
||
if indexed.cell.flags.contains(Flags::HIDDEN) {
|
||
fg = bg;
|
||
}
|
||
|
||
// Change color if cursor
|
||
if indexed.point == grid.cursor.point {
|
||
//TODO: better handling of cursor
|
||
if term.mode().contains(TermMode::SHOW_CURSOR) {
|
||
mem::swap(&mut fg, &mut bg);
|
||
} else {
|
||
fg = bg;
|
||
}
|
||
}
|
||
|
||
// Change color if selected
|
||
if let Some(selection) = &term.selection {
|
||
if let Some(range) = selection.to_range(&term) {
|
||
if range.contains(indexed.point) {
|
||
//TODO: better handling of selection
|
||
mem::swap(&mut fg, &mut bg);
|
||
}
|
||
}
|
||
}
|
||
|
||
// Convert foreground to linear
|
||
attrs = attrs.color(linear_color(fg));
|
||
// Use metadata as background color
|
||
attrs = attrs.metadata(bg.0 as usize);
|
||
//TODO: more flags
|
||
if indexed.cell.flags.contains(Flags::BOLD) {
|
||
attrs = attrs.weight(self.bold_font_weight);
|
||
} else if indexed.cell.flags.contains(Flags::DIM) {
|
||
// if DIM and !BOLD
|
||
attrs = attrs.weight(self.dim_font_weight);
|
||
}
|
||
if indexed.cell.flags.contains(Flags::ITALIC) {
|
||
//TODO: automatically use fake italic
|
||
attrs = attrs.cache_key_flags(CacheKeyFlags::FAKE_ITALIC);
|
||
}
|
||
if attrs != attrs_list.defaults() {
|
||
attrs_list.add_span(start..end, attrs);
|
||
}
|
||
|
||
last_point = Some(indexed.point);
|
||
}
|
||
}
|
||
|
||
//TODO: do not repeat!
|
||
while line_i >= buffer.lines.len() {
|
||
buffer.lines.push(BufferLine::new(
|
||
"",
|
||
AttrsList::new(self.default_attrs),
|
||
Shaping::Advanced,
|
||
));
|
||
buffer.set_redraw(true);
|
||
}
|
||
|
||
if buffer.lines[line_i].set_text(text, attrs_list) {
|
||
buffer.set_redraw(true);
|
||
}
|
||
line_i += 1;
|
||
|
||
if buffer.lines.len() != line_i {
|
||
buffer.lines.truncate(line_i);
|
||
buffer.set_redraw(true);
|
||
}
|
||
|
||
{
|
||
let mut font_system = font_system().write().unwrap();
|
||
buffer.shape_until_scroll(font_system.raw(), true);
|
||
}
|
||
}
|
||
|
||
log::debug!("buffer update {:?}", instant.elapsed());
|
||
|
||
self.buffer.redraw()
|
||
}
|
||
|
||
pub fn viewport_to_point(&self, point: Point<usize>) -> Point {
|
||
let term = self.term.lock();
|
||
viewport_to_point(term.grid().display_offset(), point)
|
||
}
|
||
}
|
||
|
||
impl Drop for Terminal {
|
||
fn drop(&mut self) {
|
||
// Ensure shutdown on terminal drop
|
||
let _ = self.notifier.0.send(Msg::Shutdown);
|
||
}
|
||
}
|