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Add live config reload for font family and style 

Fixes #2737.
This commit is contained in:
wayne 2019-11-03 13:02:26 -06:00 committed by Christian Duerr
parent 4dd327f0ae
commit fa6ceacfa4
5 changed files with 101 additions and 90 deletions
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2
CHANGELOG.md
View File

@ -24,11 +24,11 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
- Terminal escape bindings with combined modifiers
- Bindings for ScrollToTop and ScrollToBottom actions
- `ReceiveChar` key binding action to insert the key's text character
- Live reload font size from config
- New CLI flag `--hold` for keeping Alacritty opened after its child process exits
- Escape sequence to save and restore window title from stack
- Alternate scroll escape sequence (`CSI ? 1007 h` / `CSI ? 1007 l`)
- Print name of launch command if Alacritty failed to execute it
- Live reload font settings from config
### Changed

2
alacritty.yml
View File

@ -99,7 +99,7 @@
# change the `it` value in terminfo when altering this setting.
#tabspaces: 8
# Font configuration (changes require restart)
# Font configuration
#font:
# Normal (roman) font face
#normal:

41
alacritty/src/display.rs
View File

@ -14,7 +14,6 @@
//! The display subsystem including window management, font rasterization, and
//! GPU drawing.
use std::cmp::max;
use std::f64;
use std::fmt;
use std::time::Instant;
@ -24,9 +23,9 @@ use glutin::event_loop::EventLoop;
use log::{debug, info};
use parking_lot::MutexGuard;
use font::{self, Rasterize, Size};
use font::{self, Rasterize};
use alacritty_terminal::config::StartupMode;
use alacritty_terminal::config::{Font, StartupMode};
use alacritty_terminal::event::{Event, OnResize};
use alacritty_terminal::index::Line;
use alacritty_terminal::message_bar::MessageBuffer;
@ -37,12 +36,9 @@ use alacritty_terminal::term::color::Rgb;
use alacritty_terminal::term::{RenderableCell, SizeInfo, Term};
use crate::config::Config;
use crate::event::{FontResize, Resize};
use crate::event::DisplayUpdate;
use crate::window::{self, Window};
/// Font size change interval
pub const FONT_SIZE_STEP: f32 = 0.5;
#[derive(Debug)]
pub enum Error {
/// Error with window management
@ -116,7 +112,6 @@ impl From<glutin::ContextError> for Error {
/// The display wraps a window, font rasterizer, and GPU renderer
pub struct Display {
pub size_info: SizeInfo,
pub font_size: Size,
pub window: Window,
renderer: QuadRenderer,
@ -228,14 +223,7 @@ impl Display {
_ => (),
}
Ok(Display {
window,
renderer,
glyph_cache,
meter: Meter::new(),
size_info,
font_size: config.font.size,
})
Ok(Display { window, renderer, glyph_cache, meter: Meter::new(), size_info })
}
fn new_glyph_cache(
@ -270,12 +258,10 @@ impl Display {
}
/// Update font size and cell dimensions
fn update_glyph_cache(&mut self, config: &Config, size: Size) {
fn update_glyph_cache(&mut self, config: &Config, font: Font) {
let size_info = &mut self.size_info;
let cache = &mut self.glyph_cache;
let font = config.font.clone().with_size(size);
self.renderer.with_loader(|mut api| {
let _ = cache.update_font_size(font, size_info.dpr, &mut api);
});
@ -286,27 +272,22 @@ impl Display {
size_info.cell_height = cell_height;
}
/// Process resize events
pub fn handle_resize<T>(
/// Process update events
pub fn handle_update<T>(
&mut self,
terminal: &mut Term<T>,
pty_resize_handle: &mut dyn OnResize,
message_buffer: &MessageBuffer,
config: &Config,
resize_pending: Resize,
update_pending: DisplayUpdate,
) {
// Update font size and cell dimensions
if let Some(resize) = resize_pending.font_size {
self.font_size = match resize {
FontResize::Delta(delta) => max(self.font_size + delta, FONT_SIZE_STEP.into()),
FontResize::Reset => config.font.size,
};
self.update_glyph_cache(config, self.font_size);
if let Some(font) = update_pending.font {
self.update_glyph_cache(config, font);
}
// Update the window dimensions
if let Some(size) = resize_pending.dimensions {
if let Some(size) = update_pending.dimensions {
self.size_info.width = size.width as f32;
self.size_info.height = size.height as f32;
}

92
alacritty/src/event.rs
View File

@ -1,5 +1,6 @@
//! Process window events
use std::borrow::Cow;
use std::cmp::max;
use std::env;
#[cfg(unix)]
use std::fs;
@ -20,6 +21,7 @@ use serde_json as json;
use font::Size;
use alacritty_terminal::clipboard::ClipboardType;
use alacritty_terminal::config::Font;
use alacritty_terminal::config::LOG_TARGET_CONFIG;
use alacritty_terminal::event::OnResize;
use alacritty_terminal::event::{Event, EventListener, Notify};
@ -36,25 +38,19 @@ use alacritty_terminal::util::{limit, start_daemon};
use crate::config;
use crate::config::Config;
use crate::display::Display;
use crate::input::{self, ActionContext as _, Modifiers};
use crate::input::{self, ActionContext as _, Modifiers, FONT_SIZE_STEP};
use crate::window::Window;
#[derive(Copy, Clone, Debug, PartialEq)]
pub enum FontResize {
Delta(f32),
Reset,
}
#[derive(Default, Copy, Clone, Debug, PartialEq)]
pub struct Resize {
#[derive(Default, Clone, Debug, PartialEq)]
pub struct DisplayUpdate {
pub dimensions: Option<PhysicalSize>,
pub message_buffer: Option<()>,
pub font_size: Option<FontResize>,
pub font: Option<Font>,
}
impl Resize {
impl DisplayUpdate {
fn is_empty(&self) -> bool {
self.dimensions.is_none() && self.font_size.is_none() && self.message_buffer.is_none()
self.dimensions.is_none() && self.font.is_none() && self.message_buffer.is_none()
}
}
@ -68,8 +64,9 @@ pub struct ActionContext<'a, N, T> {
pub modifiers: &'a mut Modifiers,
pub window: &'a mut Window,
pub message_buffer: &'a mut MessageBuffer,
pub resize_pending: &'a mut Resize,
pub font_size: &'a Size,
pub display_update_pending: &'a mut DisplayUpdate,
pub config: &'a mut Config,
font_size: &'a mut Size,
}
impl<'a, N: Notify + 'a, T: EventListener> input::ActionContext<T> for ActionContext<'a, N, T> {
@ -227,23 +224,30 @@ impl<'a, N: Notify + 'a, T: EventListener> input::ActionContext<T> for ActionCon
}
fn change_font_size(&mut self, delta: f32) {
self.resize_pending.font_size = Some(FontResize::Delta(delta));
*self.font_size = max(*self.font_size + delta, Size::new(FONT_SIZE_STEP));
let font = self.config.font.clone().with_size(*self.font_size);
self.display_update_pending.font = Some(font);
self.terminal.dirty = true;
}
fn reset_font_size(&mut self) {
self.resize_pending.font_size = Some(FontResize::Reset);
*self.font_size = self.config.font.size;
self.display_update_pending.font = Some(self.config.font.clone());
self.terminal.dirty = true;
}
fn pop_message(&mut self) {
self.resize_pending.message_buffer = Some(());
self.display_update_pending.message_buffer = Some(());
self.message_buffer.pop();
}
fn message(&self) -> Option<&Message> {
self.message_buffer.message()
}
fn config(&self) -> &Config {
self.config
}
}
pub enum ClickState {
@ -306,6 +310,7 @@ pub struct Processor<N> {
pty_resize_handle: Box<dyn OnResize>,
message_buffer: MessageBuffer,
display: Display,
font_size: Size,
}
impl<N: Notify> Processor<N> {
@ -326,6 +331,7 @@ impl<N: Notify> Processor<N> {
received_count: 0,
suppress_chars: false,
modifiers: Default::default(),
font_size: config.font.size,
config,
pty_resize_handle,
message_buffer,
@ -374,7 +380,7 @@ impl<N: Notify> Processor<N> {
let mut terminal = terminal.lock();
let mut resize_pending = Resize::default();
let mut display_update_pending = DisplayUpdate::default();
let context = ActionContext {
terminal: &mut terminal,
@ -385,11 +391,12 @@ impl<N: Notify> Processor<N> {
suppress_chars: &mut self.suppress_chars,
modifiers: &mut self.modifiers,
message_buffer: &mut self.message_buffer,
resize_pending: &mut resize_pending,
display_update_pending: &mut display_update_pending,
window: &mut self.display.window,
font_size: &self.display.font_size,
font_size: &mut self.font_size,
config: &mut self.config,
};
let mut processor = input::Processor::new(context, &mut self.config);
let mut processor = input::Processor::new(context);
for event in event_queue.drain(..) {
Processor::handle_event(event, &mut processor);
@ -407,21 +414,21 @@ impl<N: Notify> Processor<N> {
let size = self.display.window.inner_size().to_physical(dpr);
resize_pending.font_size = Some(FontResize::Delta(0.));
resize_pending.dimensions = Some(size);
display_update_pending.font = Some(self.config.font.clone());
display_update_pending.dimensions = Some(size);
terminal.dirty = true;
}
}
// Process resize events
if !resize_pending.is_empty() {
self.display.handle_resize(
// Process DisplayUpdate events
if !display_update_pending.is_empty() {
self.display.handle_update(
&mut terminal,
self.pty_resize_handle.as_mut(),
&self.message_buffer,
&self.config,
resize_pending,
display_update_pending,
);
}
@ -460,23 +467,29 @@ impl<N: Notify> Processor<N> {
},
Event::ConfigReload(path) => {
processor.ctx.message_buffer.remove_target(LOG_TARGET_CONFIG);
processor.ctx.resize_pending.message_buffer = Some(());
processor.ctx.display_update_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);
if processor.ctx.config.font != config.font {
// Do not update font size if it has been changed at runtime
if *processor.ctx.font_size == processor.ctx.config.font.size {
*processor.ctx.font_size = config.font.size;
}
let font = config.font.clone().with_size(*processor.ctx.font_size);
processor.ctx.display_update_pending.font = Some(font);
}
*processor.config = config;
*processor.ctx.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.display_update_pending.message_buffer = Some(());
processor.ctx.terminal.dirty = true;
},
Event::MouseCursorDirty => processor.reset_mouse_cursor(),
@ -488,14 +501,14 @@ impl<N: Notify> Processor<N> {
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.display_update_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 {
if processor.ctx.config.ui_config.mouse.hide_when_typing {
processor.ctx.window.set_mouse_visible(false);
}
}
@ -540,17 +553,18 @@ impl<N: Notify> Processor<N> {
},
HiDpiFactorChanged(dpr) => {
let dpr_change = (dpr / processor.ctx.size_info.dpr) as f32;
let resize_pending = &mut processor.ctx.resize_pending;
let display_update_pending = &mut processor.ctx.display_update_pending;
// Push current font to update its DPR
resize_pending.font_size = Some(FontResize::Delta(0.));
display_update_pending.font = Some(processor.ctx.config.font.clone());
// 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))
});
let dimensions =
display_update_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);

54
alacritty/src/input.rs
View File

@ -42,17 +42,18 @@ use alacritty_terminal::url::Url;
use alacritty_terminal::util::start_daemon;
use crate::config::{Action, Binding, Config, Key, RelaxedEq};
use crate::display::FONT_SIZE_STEP;
use crate::event::{ClickState, Mouse};
use crate::window::Window;
/// Font size change interval
pub const FONT_SIZE_STEP: f32 = 0.5;
/// Processes input from glutin.
///
/// An escape sequence may be emitted in case specific keys or key combinations
/// are activated.
pub struct Processor<'a, T: EventListener, A: ActionContext<T> + 'a> {
pub struct Processor<T: EventListener, A: ActionContext<T>> {
pub ctx: A,
pub config: &'a mut Config,
_phantom: PhantomData<T>,
}
@ -83,6 +84,7 @@ pub trait ActionContext<T: EventListener> {
fn reset_font_size(&mut self);
fn pop_message(&mut self);
fn message(&self) -> Option<&Message>;
fn config(&self) -> &Config;
}
#[derive(Debug, Default, Copy, Clone)]
@ -226,9 +228,9 @@ impl From<MouseState> for CursorIcon {
}
}
impl<'a, T: EventListener, A: ActionContext<T> + 'a> Processor<'a, T, A> {
pub fn new(ctx: A, config: &'a mut Config) -> Self {
Self { ctx, config, _phantom: Default::default() }
impl<T: EventListener, A: ActionContext<T>> Processor<T, A> {
pub fn new(ctx: A) -> Self {
Self { ctx, _phantom: Default::default() }
}
fn mouse_state(&mut self, point: Point, mods: ModifiersState) -> MouseState {
@ -245,9 +247,9 @@ impl<'a, T: EventListener, A: ActionContext<T> + 'a> Processor<'a, T, A> {
}
// Check for URL at point with required modifiers held
if self.config.ui_config.mouse.url.mods().relaxed_eq(mods)
if self.ctx.config().ui_config.mouse.url.mods().relaxed_eq(mods)
&& (!self.ctx.terminal().mode().intersects(mouse_mode) || mods.shift)
&& self.config.ui_config.mouse.url.launcher.is_some()
&& self.ctx.config().ui_config.mouse.url.launcher.is_some()
&& self.ctx.selection_is_empty()
&& self.ctx.mouse().left_button_state != ElementState::Pressed
{
@ -426,7 +428,7 @@ impl<'a, T: EventListener, A: ActionContext<T> + 'a> Processor<'a, T, A> {
self.ctx.mouse_mut().click_state = match self.ctx.mouse().click_state {
ClickState::Click
if !button_changed
&& elapsed < self.config.ui_config.mouse.double_click.threshold =>
&& elapsed < self.ctx.config().ui_config.mouse.double_click.threshold =>
{
self.ctx.mouse_mut().block_url_launcher = true;
self.on_mouse_double_click(button, point);
@ -434,7 +436,7 @@ impl<'a, T: EventListener, A: ActionContext<T> + 'a> Processor<'a, T, A> {
}
ClickState::DoubleClick
if !button_changed
&& elapsed < self.config.ui_config.mouse.triple_click.threshold =>
&& elapsed < self.ctx.config().ui_config.mouse.triple_click.threshold =>
{
self.ctx.mouse_mut().block_url_launcher = true;
self.on_mouse_triple_click(button, point);
@ -512,7 +514,7 @@ impl<'a, T: EventListener, A: ActionContext<T> + 'a> Processor<'a, T, A> {
return;
}
if let Some(ref launcher) = self.config.ui_config.mouse.url.launcher {
if let Some(ref launcher) = self.ctx.config().ui_config.mouse.url.launcher {
let mut args = launcher.args().to_vec();
args.push(self.ctx.terminal().url_to_string(url));
@ -566,10 +568,11 @@ impl<'a, T: EventListener, A: ActionContext<T> + 'a> Processor<'a, T, A> {
}
} else if self.ctx.terminal().mode().contains(alt_scroll_modes) && !modifiers.shift {
let multiplier = i32::from(
self.config
self.ctx
.config()
.scrolling
.faux_multiplier()
.unwrap_or_else(|| self.config.scrolling.multiplier()),
.unwrap_or_else(|| self.ctx.config().scrolling.multiplier()),
);
self.ctx.mouse_mut().scroll_px += new_scroll_px * multiplier;
@ -584,7 +587,7 @@ impl<'a, T: EventListener, A: ActionContext<T> + 'a> Processor<'a, T, A> {
}
self.ctx.write_to_pty(content);
} else {
let multiplier = i32::from(self.config.scrolling.multiplier());
let multiplier = i32::from(self.ctx.config().scrolling.multiplier());
self.ctx.mouse_mut().scroll_px += new_scroll_px * multiplier;
let lines = self.ctx.mouse().scroll_px / height;
@ -677,7 +680,7 @@ impl<'a, T: EventListener, A: ActionContext<T> + 'a> Processor<'a, T, A> {
c.encode_utf8(&mut bytes[..]);
}
if self.config.alt_send_esc()
if self.ctx.config().alt_send_esc()
&& *self.ctx.received_count() == 0
&& self.ctx.modifiers().alt()
&& utf8_len == 1
@ -698,7 +701,9 @@ impl<'a, T: EventListener, A: ActionContext<T> + 'a> Processor<'a, T, A> {
fn process_key_bindings(&mut self, input: KeyboardInput) {
let mut suppress_chars = None;
for binding in &self.config.ui_config.key_bindings {
for i in 0..self.ctx.config().ui_config.key_bindings.len() {
let binding = &self.ctx.config().ui_config.key_bindings[i];
let key = match (binding.trigger, input.virtual_keycode) {
(Key::Scancode(_), _) => Key::Scancode(input.scancode),
(_, Some(key)) => Key::from_glutin_input(key),
@ -707,6 +712,7 @@ impl<'a, T: EventListener, A: ActionContext<T> + 'a> Processor<'a, T, A> {
if binding.is_triggered_by(*self.ctx.terminal().mode(), input.modifiers, &key, false) {
// Binding was triggered; run the action
let binding = binding.clone();
binding.execute(&mut self.ctx, false);
// Don't suppress when there has been a `ReceiveChar` action
@ -723,7 +729,9 @@ impl<'a, T: EventListener, A: ActionContext<T> + 'a> Processor<'a, T, A> {
/// The provided mode, mods, and key must match what is allowed by a binding
/// for its action to be executed.
fn process_mouse_bindings(&mut self, mods: ModifiersState, button: MouseButton) {
for binding in &self.config.ui_config.mouse_bindings {
for i in 0..self.ctx.config().ui_config.mouse_bindings.len() {
let binding = &self.ctx.config().ui_config.mouse_bindings[i];
if binding.is_triggered_by(*self.ctx.terminal().mode(), mods, &button, true) {
// binding was triggered; run the action
let mouse_mode = !mods.shift
@ -732,6 +740,8 @@ impl<'a, T: EventListener, A: ActionContext<T> + 'a> Processor<'a, T, A> {
| TermMode::MOUSE_DRAG
| TermMode::MOUSE_MOTION,
);
let binding = binding.clone();
binding.execute(&mut self.ctx, mouse_mode);
}
}
@ -780,7 +790,7 @@ impl<'a, T: EventListener, A: ActionContext<T> + 'a> Processor<'a, T, A> {
/// Copy text selection.
fn copy_selection(&mut self) {
if self.config.selection.save_to_clipboard {
if self.ctx.config().selection.save_to_clipboard {
self.ctx.copy_selection(ClipboardType::Clipboard);
}
self.ctx.copy_selection(ClipboardType::Selection);
@ -849,6 +859,7 @@ mod tests {
pub received_count: usize,
pub suppress_chars: bool,
pub modifiers: Modifiers,
config: &'a Config,
}
impl<'a, T: EventListener> super::ActionContext<T> for ActionContext<'a, T> {
@ -947,6 +958,10 @@ mod tests {
fn message(&self) -> Option<&Message> {
self.message_buffer.message()
}
fn config(&self) -> &Config {
self.config
}
}
macro_rules! test_clickstate {
@ -1002,9 +1017,10 @@ mod tests {
suppress_chars: false,
modifiers: Modifiers::default(),
message_buffer: &mut message_buffer,
config: &cfg,
};
let mut processor = Processor::new(context, &mut cfg);
let mut processor = Processor::new(context);
if let Event::WindowEvent { event: WindowEvent::MouseInput { state, button, modifiers, .. }, .. } = $input {
processor.mouse_input(state, button, modifiers);