652 lines
22 KiB
Rust
652 lines
22 KiB
Rust
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//! Process window events
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use std::borrow::Cow;
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use std::env;
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#[cfg(unix)]
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use std::fs;
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use std::fs::File;
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use std::io::Write;
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use std::sync::Arc;
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use std::time::Instant;
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use glutin::dpi::PhysicalSize;
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use glutin::event::{ElementState, Event as GlutinEvent, MouseButton};
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use glutin::event_loop::{ControlFlow, EventLoop, EventLoopProxy};
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use glutin::platform::desktop::EventLoopExtDesktop;
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#[cfg(not(any(target_os = "macos", windows)))]
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use glutin::platform::unix::EventLoopWindowTargetExtUnix;
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use log::{debug, info, warn};
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use serde_json as json;
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use font::Size;
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use alacritty_terminal::clipboard::ClipboardType;
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use alacritty_terminal::config::LOG_TARGET_CONFIG;
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use alacritty_terminal::event::OnResize;
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use alacritty_terminal::event::{Event, EventListener, Notify};
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use alacritty_terminal::grid::Scroll;
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use alacritty_terminal::index::{Column, Line, Point, Side};
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use alacritty_terminal::message_bar::{Message, MessageBuffer};
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use alacritty_terminal::selection::Selection;
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use alacritty_terminal::sync::FairMutex;
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use alacritty_terminal::term::cell::Cell;
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use alacritty_terminal::term::{SizeInfo, Term};
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use alacritty_terminal::tty;
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use alacritty_terminal::util::{limit, start_daemon};
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use crate::config;
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use crate::config::Config;
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use crate::display::Display;
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use crate::input::{self, ActionContext as _, Modifiers};
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use crate::window::Window;
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#[derive(Copy, Clone, Debug, PartialEq)]
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pub enum FontResize {
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Delta(f32),
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Reset,
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}
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#[derive(Default, Copy, Clone, Debug, PartialEq)]
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pub struct Resize {
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pub dimensions: Option<PhysicalSize>,
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pub message_buffer: Option<()>,
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pub font_size: Option<FontResize>,
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}
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impl Resize {
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fn is_empty(&self) -> bool {
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self.dimensions.is_none() && self.font_size.is_none() && self.message_buffer.is_none()
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}
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}
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pub struct ActionContext<'a, N, T> {
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pub notifier: &'a mut N,
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pub terminal: &'a mut Term<T>,
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pub size_info: &'a mut SizeInfo,
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pub mouse: &'a mut Mouse,
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pub received_count: &'a mut usize,
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pub suppress_chars: &'a mut bool,
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pub modifiers: &'a mut Modifiers,
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pub window: &'a mut Window,
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pub message_buffer: &'a mut MessageBuffer,
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pub resize_pending: &'a mut Resize,
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pub font_size: &'a Size,
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}
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impl<'a, N: Notify + 'a, T: EventListener> input::ActionContext<T> for ActionContext<'a, N, T> {
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fn write_to_pty<B: Into<Cow<'static, [u8]>>>(&mut self, val: B) {
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self.notifier.notify(val);
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}
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fn size_info(&self) -> SizeInfo {
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*self.size_info
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}
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fn scroll(&mut self, scroll: Scroll) {
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self.terminal.scroll_display(scroll);
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if let ElementState::Pressed = self.mouse().left_button_state {
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let (x, y) = (self.mouse().x, self.mouse().y);
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let size_info = self.size_info();
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let point = size_info.pixels_to_coords(x, y);
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let cell_side = self.mouse().cell_side;
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self.update_selection(Point { line: point.line, col: point.col }, cell_side);
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}
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}
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fn copy_selection(&mut self, ty: ClipboardType) {
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if let Some(selected) = self.terminal.selection_to_string() {
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if !selected.is_empty() {
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self.terminal.clipboard().store(ty, selected);
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}
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}
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}
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fn selection_is_empty(&self) -> bool {
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self.terminal.selection().as_ref().map(Selection::is_empty).unwrap_or(true)
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}
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fn clear_selection(&mut self) {
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*self.terminal.selection_mut() = None;
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self.terminal.dirty = true;
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}
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fn update_selection(&mut self, point: Point, side: Side) {
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let point = self.terminal.visible_to_buffer(point);
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// Update selection if one exists
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if let Some(ref mut selection) = self.terminal.selection_mut() {
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selection.update(point, side);
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}
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self.terminal.dirty = true;
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}
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fn simple_selection(&mut self, point: Point, side: Side) {
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let point = self.terminal.visible_to_buffer(point);
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*self.terminal.selection_mut() = Some(Selection::simple(point, side));
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self.terminal.dirty = true;
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}
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fn block_selection(&mut self, point: Point, side: Side) {
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let point = self.terminal.visible_to_buffer(point);
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*self.terminal.selection_mut() = Some(Selection::block(point, side));
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self.terminal.dirty = true;
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}
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fn semantic_selection(&mut self, point: Point) {
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let point = self.terminal.visible_to_buffer(point);
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*self.terminal.selection_mut() = Some(Selection::semantic(point));
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self.terminal.dirty = true;
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}
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fn line_selection(&mut self, point: Point) {
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let point = self.terminal.visible_to_buffer(point);
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*self.terminal.selection_mut() = Some(Selection::lines(point));
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self.terminal.dirty = true;
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}
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fn mouse_coords(&self) -> Option<Point> {
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let x = self.mouse.x as usize;
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let y = self.mouse.y as usize;
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if self.size_info.contains_point(x, y, true) {
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Some(self.size_info.pixels_to_coords(x, y))
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} else {
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None
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}
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}
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#[inline]
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fn mouse_mut(&mut self) -> &mut Mouse {
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self.mouse
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}
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#[inline]
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fn mouse(&self) -> &Mouse {
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self.mouse
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}
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#[inline]
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fn received_count(&mut self) -> &mut usize {
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&mut self.received_count
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}
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#[inline]
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fn suppress_chars(&mut self) -> &mut bool {
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&mut self.suppress_chars
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}
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#[inline]
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fn modifiers(&mut self) -> &mut Modifiers {
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&mut self.modifiers
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}
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#[inline]
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fn window(&self) -> &Window {
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self.window
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}
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#[inline]
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fn window_mut(&mut self) -> &mut Window {
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self.window
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}
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#[inline]
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fn terminal(&self) -> &Term<T> {
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self.terminal
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}
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#[inline]
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fn terminal_mut(&mut self) -> &mut Term<T> {
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self.terminal
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}
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fn spawn_new_instance(&mut self) {
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let alacritty = env::args().next().unwrap();
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#[cfg(unix)]
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let args = {
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#[cfg(not(target_os = "freebsd"))]
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let proc_prefix = "";
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#[cfg(target_os = "freebsd")]
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let proc_prefix = "/compat/linux";
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let link_path = format!("{}/proc/{}/cwd", proc_prefix, tty::child_pid());
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if let Ok(path) = fs::read_link(link_path) {
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vec!["--working-directory".into(), path]
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} else {
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Vec::new()
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}
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};
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#[cfg(not(unix))]
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let args: Vec<String> = Vec::new();
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match start_daemon(&alacritty, &args) {
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Ok(_) => debug!("Started new Alacritty process: {} {:?}", alacritty, args),
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Err(_) => warn!("Unable to start new Alacritty process: {} {:?}", alacritty, args),
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}
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}
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fn change_font_size(&mut self, delta: f32) {
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self.resize_pending.font_size = Some(FontResize::Delta(delta));
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self.terminal.dirty = true;
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}
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fn reset_font_size(&mut self) {
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self.resize_pending.font_size = Some(FontResize::Reset);
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self.terminal.dirty = true;
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}
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fn pop_message(&mut self) {
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self.resize_pending.message_buffer = Some(());
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self.message_buffer.pop();
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}
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fn message(&self) -> Option<&Message> {
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self.message_buffer.message()
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}
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}
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pub enum ClickState {
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None,
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Click,
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DoubleClick,
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TripleClick,
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}
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/// State of the mouse
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pub struct Mouse {
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pub x: usize,
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pub y: usize,
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pub left_button_state: ElementState,
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pub middle_button_state: ElementState,
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pub right_button_state: ElementState,
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pub last_click_timestamp: Instant,
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pub click_state: ClickState,
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pub scroll_px: i32,
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pub line: Line,
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pub column: Column,
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pub cell_side: Side,
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pub lines_scrolled: f32,
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pub block_url_launcher: bool,
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pub last_button: MouseButton,
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}
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impl Default for Mouse {
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fn default() -> Mouse {
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Mouse {
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x: 0,
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y: 0,
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last_click_timestamp: Instant::now(),
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left_button_state: ElementState::Released,
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middle_button_state: ElementState::Released,
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right_button_state: ElementState::Released,
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click_state: ClickState::None,
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scroll_px: 0,
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line: Line(0),
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column: Column(0),
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cell_side: Side::Left,
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lines_scrolled: 0.0,
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block_url_launcher: false,
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last_button: MouseButton::Other(0),
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}
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}
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}
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/// The event processor
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///
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/// Stores some state from received events and dispatches actions when they are
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/// triggered.
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pub struct Processor<N> {
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notifier: N,
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mouse: Mouse,
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received_count: usize,
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suppress_chars: bool,
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modifiers: Modifiers,
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config: Config,
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pty_resize_handle: Box<dyn OnResize>,
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message_buffer: MessageBuffer,
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display: Display,
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}
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impl<N: Notify> Processor<N> {
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/// Create a new event processor
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///
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/// Takes a writer which is expected to be hooked up to the write end of a
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/// pty.
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pub fn new(
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notifier: N,
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pty_resize_handle: Box<dyn OnResize>,
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message_buffer: MessageBuffer,
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config: Config,
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display: Display,
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) -> Processor<N> {
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Processor {
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notifier,
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mouse: Default::default(),
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received_count: 0,
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suppress_chars: false,
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modifiers: Default::default(),
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config,
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pty_resize_handle,
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message_buffer,
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display,
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}
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}
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/// Run the event loop.
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pub fn run<T>(&mut self, terminal: Arc<FairMutex<Term<T>>>, mut event_loop: EventLoop<Event>)
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where
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T: EventListener,
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{
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#[cfg(not(any(target_os = "macos", windows)))]
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let mut dpr_initialized = false;
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let mut event_queue = Vec::new();
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event_loop.run_return(|event, _event_loop, control_flow| {
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if self.config.debug.print_events {
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info!("glutin event: {:?}", event);
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}
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match (&event, tty::process_should_exit()) {
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// Check for shutdown
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(GlutinEvent::UserEvent(Event::Exit), _) | (_, true) => {
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*control_flow = ControlFlow::Exit;
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return;
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},
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// Process events
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(GlutinEvent::EventsCleared, _) => {
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*control_flow = ControlFlow::Wait;
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if event_queue.is_empty() {
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return;
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}
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},
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// Buffer events
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_ => {
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*control_flow = ControlFlow::Poll;
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if !Self::skip_event(&event) {
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event_queue.push(event);
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}
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return;
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},
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}
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let mut terminal = terminal.lock();
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let mut resize_pending = Resize::default();
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let context = ActionContext {
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terminal: &mut terminal,
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notifier: &mut self.notifier,
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mouse: &mut self.mouse,
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size_info: &mut self.display.size_info,
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received_count: &mut self.received_count,
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suppress_chars: &mut self.suppress_chars,
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modifiers: &mut self.modifiers,
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message_buffer: &mut self.message_buffer,
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resize_pending: &mut resize_pending,
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window: &mut self.display.window,
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font_size: &self.display.font_size,
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};
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let mut processor = input::Processor::new(context, &mut self.config);
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for event in event_queue.drain(..) {
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Processor::handle_event(event, &mut processor);
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}
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// TODO: Workaround for incorrect startup DPI on X11
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// https://github.com/rust-windowing/winit/issues/998
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#[cfg(not(any(target_os = "macos", windows)))]
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{
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if !dpr_initialized && _event_loop.is_x11() {
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dpr_initialized = true;
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let dpr = self.display.window.hidpi_factor();
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self.display.size_info.dpr = dpr;
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let size = self.display.window.inner_size().to_physical(dpr);
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resize_pending.font_size = Some(FontResize::Delta(0.));
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resize_pending.dimensions = Some(size);
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terminal.dirty = true;
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}
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}
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// Process resize events
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if !resize_pending.is_empty() {
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self.display.handle_resize(
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&mut terminal,
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self.pty_resize_handle.as_mut(),
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&self.message_buffer,
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&self.config,
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resize_pending,
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);
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}
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if terminal.dirty {
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// Clear dirty flag
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terminal.dirty = !terminal.visual_bell.completed();
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// Redraw screen
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self.display.draw(terminal, &self.message_buffer, &self.config);
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}
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});
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// Write ref tests to disk
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self.write_ref_test_results(&terminal.lock());
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}
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/// Handle events from glutin
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///
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/// Doesn't take self mutably due to borrow checking. Kinda uggo but w/e.
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fn handle_event<T>(
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event: GlutinEvent<Event>,
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processor: &mut input::Processor<T, ActionContext<N, T>>,
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) where
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T: EventListener,
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{
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match event {
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GlutinEvent::UserEvent(event) => match event {
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||
|
Event::Title(title) => processor.ctx.window.set_title(&title),
|
||
|
Event::Wakeup => processor.ctx.terminal.dirty = true,
|
||
|
Event::Urgent => {
|
||
|
processor.ctx.window.set_urgent(!processor.ctx.terminal.is_focused)
|
||
|
},
|
||
|
Event::ConfigReload(path) => {
|
||
|
processor.ctx.message_buffer.remove_target(LOG_TARGET_CONFIG);
|
||
|
processor.ctx.resize_pending.message_buffer = Some(());
|
||
|
|
||
|
if let Ok(config) = config::reload_from(&path) {
|
||
|
processor.ctx.terminal.update_config(&config);
|
||
|
|
||
|
if *processor.ctx.font_size == processor.config.font.size {
|
||
|
processor.ctx.resize_pending.font_size = Some(FontResize::Reset);
|
||
|
}
|
||
|
|
||
|
*processor.config = config;
|
||
|
|
||
|
processor.ctx.terminal.dirty = true;
|
||
|
}
|
||
|
},
|
||
|
Event::Message(message) => {
|
||
|
processor.ctx.message_buffer.push(message);
|
||
|
processor.ctx.resize_pending.message_buffer = Some(());
|
||
|
processor.ctx.terminal.dirty = true;
|
||
|
},
|
||
|
Event::MouseCursorDirty => processor.reset_mouse_cursor(),
|
||
|
Event::Exit => (),
|
||
|
},
|
||
|
GlutinEvent::WindowEvent { event, window_id, .. } => {
|
||
|
use glutin::event::WindowEvent::*;
|
||
|
match event {
|
||
|
CloseRequested => processor.ctx.terminal.exit(),
|
||
|
Resized(lsize) => {
|
||
|
let psize = lsize.to_physical(processor.ctx.size_info.dpr);
|
||
|
processor.ctx.resize_pending.dimensions = Some(psize);
|
||
|
processor.ctx.terminal.dirty = true;
|
||
|
},
|
||
|
KeyboardInput { input, .. } => {
|
||
|
processor.process_key(input);
|
||
|
if input.state == ElementState::Pressed {
|
||
|
// Hide cursor while typing
|
||
|
if processor.config.ui_config.mouse.hide_when_typing {
|
||
|
processor.ctx.window.set_mouse_visible(false);
|
||
|
}
|
||
|
}
|
||
|
},
|
||
|
ReceivedCharacter(c) => processor.received_char(c),
|
||
|
MouseInput { state, button, modifiers, .. } => {
|
||
|
if !cfg!(target_os = "macos") || processor.ctx.terminal.is_focused {
|
||
|
processor.ctx.window.set_mouse_visible(true);
|
||
|
processor.mouse_input(state, button, modifiers);
|
||
|
processor.ctx.terminal.dirty = true;
|
||
|
}
|
||
|
},
|
||
|
CursorMoved { position: lpos, modifiers, .. } => {
|
||
|
let (x, y) = lpos.to_physical(processor.ctx.size_info.dpr).into();
|
||
|
let x: i32 = limit(x, 0, processor.ctx.size_info.width as i32);
|
||
|
let y: i32 = limit(y, 0, processor.ctx.size_info.height as i32);
|
||
|
|
||
|
processor.ctx.window.set_mouse_visible(true);
|
||
|
processor.mouse_moved(x as usize, y as usize, modifiers);
|
||
|
},
|
||
|
MouseWheel { delta, phase, modifiers, .. } => {
|
||
|
processor.ctx.window.set_mouse_visible(true);
|
||
|
processor.on_mouse_wheel(delta, phase, modifiers);
|
||
|
},
|
||
|
Focused(is_focused) => {
|
||
|
if window_id == processor.ctx.window.window_id() {
|
||
|
processor.ctx.terminal.is_focused = is_focused;
|
||
|
processor.ctx.terminal.dirty = true;
|
||
|
|
||
|
if is_focused {
|
||
|
processor.ctx.window.set_urgent(false);
|
||
|
} else {
|
||
|
processor.ctx.window.set_mouse_visible(true);
|
||
|
}
|
||
|
|
||
|
processor.on_focus_change(is_focused);
|
||
|
}
|
||
|
},
|
||
|
DroppedFile(path) => {
|
||
|
let path: String = path.to_string_lossy().into();
|
||
|
processor.ctx.write_to_pty(path.into_bytes());
|
||
|
},
|
||
|
HiDpiFactorChanged(dpr) => {
|
||
|
let dpr_change = (dpr / processor.ctx.size_info.dpr) as f32;
|
||
|
let resize_pending = &mut processor.ctx.resize_pending;
|
||
|
|
||
|
// Push current font to update its DPR
|
||
|
resize_pending.font_size = Some(FontResize::Delta(0.));
|
||
|
|
||
|
// Scale window dimensions with new DPR
|
||
|
let old_width = processor.ctx.size_info.width;
|
||
|
let old_height = processor.ctx.size_info.height;
|
||
|
let dimensions = resize_pending.dimensions.get_or_insert_with(|| {
|
||
|
PhysicalSize::new(f64::from(old_width), f64::from(old_height))
|
||
|
});
|
||
|
dimensions.width *= f64::from(dpr_change);
|
||
|
dimensions.height *= f64::from(dpr_change);
|
||
|
|
||
|
processor.ctx.terminal.dirty = true;
|
||
|
processor.ctx.size_info.dpr = dpr;
|
||
|
},
|
||
|
RedrawRequested => processor.ctx.terminal.dirty = true,
|
||
|
TouchpadPressure { .. }
|
||
|
| CursorEntered { .. }
|
||
|
| CursorLeft { .. }
|
||
|
| AxisMotion { .. }
|
||
|
| HoveredFileCancelled
|
||
|
| Destroyed
|
||
|
| HoveredFile(_)
|
||
|
| Touch(_)
|
||
|
| Moved(_) => (),
|
||
|
// TODO: Add support for proper modifier handling
|
||
|
ModifiersChanged { .. } => (),
|
||
|
}
|
||
|
},
|
||
|
GlutinEvent::DeviceEvent { .. }
|
||
|
| GlutinEvent::Suspended { .. }
|
||
|
| GlutinEvent::NewEvents { .. }
|
||
|
| GlutinEvent::EventsCleared
|
||
|
| GlutinEvent::Resumed
|
||
|
| GlutinEvent::LoopDestroyed => (),
|
||
|
}
|
||
|
}
|
||
|
|
||
|
/// Check if an event is irrelevant and can be skipped
|
||
|
fn skip_event(event: &GlutinEvent<Event>) -> bool {
|
||
|
match event {
|
||
|
GlutinEvent::UserEvent(Event::Exit) => true,
|
||
|
GlutinEvent::WindowEvent { event, .. } => {
|
||
|
use glutin::event::WindowEvent::*;
|
||
|
match event {
|
||
|
TouchpadPressure { .. }
|
||
|
| CursorEntered { .. }
|
||
|
| CursorLeft { .. }
|
||
|
| AxisMotion { .. }
|
||
|
| HoveredFileCancelled
|
||
|
| Destroyed
|
||
|
| HoveredFile(_)
|
||
|
| Touch(_)
|
||
|
| Moved(_) => true,
|
||
|
_ => false,
|
||
|
}
|
||
|
},
|
||
|
GlutinEvent::DeviceEvent { .. }
|
||
|
| GlutinEvent::Suspended { .. }
|
||
|
| GlutinEvent::NewEvents { .. }
|
||
|
| GlutinEvent::EventsCleared
|
||
|
| GlutinEvent::LoopDestroyed => true,
|
||
|
_ => false,
|
||
|
}
|
||
|
}
|
||
|
|
||
|
// Write the ref test results to the disk
|
||
|
pub fn write_ref_test_results<T>(&self, terminal: &Term<T>) {
|
||
|
if !self.config.debug.ref_test {
|
||
|
return;
|
||
|
}
|
||
|
|
||
|
// dump grid state
|
||
|
let mut grid = terminal.grid().clone();
|
||
|
grid.initialize_all(&Cell::default());
|
||
|
grid.truncate();
|
||
|
|
||
|
let serialized_grid = json::to_string(&grid).expect("serialize grid");
|
||
|
|
||
|
let serialized_size = json::to_string(&self.display.size_info).expect("serialize size");
|
||
|
|
||
|
let serialized_config = format!("{{\"history_size\":{}}}", grid.history_size());
|
||
|
|
||
|
File::create("./grid.json")
|
||
|
.and_then(|mut f| f.write_all(serialized_grid.as_bytes()))
|
||
|
.expect("write grid.json");
|
||
|
|
||
|
File::create("./size.json")
|
||
|
.and_then(|mut f| f.write_all(serialized_size.as_bytes()))
|
||
|
.expect("write size.json");
|
||
|
|
||
|
File::create("./config.json")
|
||
|
.and_then(|mut f| f.write_all(serialized_config.as_bytes()))
|
||
|
.expect("write config.json");
|
||
|
}
|
||
|
}
|
||
|
|
||
|
#[derive(Debug, Clone)]
|
||
|
pub struct EventProxy(EventLoopProxy<Event>);
|
||
|
|
||
|
impl EventProxy {
|
||
|
pub fn new(proxy: EventLoopProxy<Event>) -> Self {
|
||
|
EventProxy(proxy)
|
||
|
}
|
||
|
}
|
||
|
|
||
|
impl EventListener for EventProxy {
|
||
|
fn send_event(&self, event: Event) {
|
||
|
let _ = self.0.send_event(event);
|
||
|
}
|
||
|
}
|