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use std::cmp::min;
use std::mem;
use glutin::event::{ElementState, ModifiersState};
use urlocator::{UrlLocation, UrlLocator};
use font::Metrics;
use alacritty_terminal::index::Point;
use alacritty_terminal::renderer::rects::{RenderLine, RenderRect};
use alacritty_terminal::term::cell::Flags;
use alacritty_terminal::term::{RenderableCell, RenderableCellContent, SizeInfo};
use crate::config::{Config, RelaxedEq};
use crate::event::Mouse;
#[derive(Clone, Debug, PartialEq, Eq)]
pub struct Url {
lines: Vec<RenderLine>,
end_offset: u16,
num_cols: usize,
}
impl Url {
pub fn rects(&self, metrics: &Metrics, size: &SizeInfo) -> Vec<RenderRect> {
let end = self.end();
self.lines
.iter()
.filter(|line| line.start <= end)
.map(|line| {
let mut rect_line = *line;
rect_line.end = min(line.end, end);
rect_line.rects(Flags::UNDERLINE, metrics, size)
})
.flatten()
.collect()
}
pub fn start(&self) -> Point {
self.lines[0].start
}
pub fn end(&self) -> Point {
self.lines[self.lines.len() - 1].end.sub(self.num_cols, self.end_offset as usize)
}
}
pub struct Urls {
locator: UrlLocator,
urls: Vec<Url>,
last_point: Option<Point>,
state: UrlLocation,
}
impl Default for Urls {
fn default() -> Self {
Self {
locator: UrlLocator::new(),
urls: Vec::new(),
state: UrlLocation::Reset,
last_point: None,
}
}
}
impl Urls {
pub fn new() -> Self {
Self::default()
}
// Update tracked URLs
pub fn update(&mut self, num_cols: usize, cell: RenderableCell) {
// Ignore double-width spacers to prevent reset
if cell.flags.contains(Flags::WIDE_CHAR_SPACER) {
return;
}
// Convert cell to character
let c = match cell.inner {
RenderableCellContent::Chars(chars) => chars[0],
RenderableCellContent::Cursor(_) => return,
};
let point: Point = cell.into();
// Reset URL when empty cells have been skipped
if point != Point::default() && Some(point.sub(num_cols, 1)) != self.last_point {
self.reset();
}
self.last_point = Some(point);
// Advance parser
let last_state = mem::replace(&mut self.state, self.locator.advance(c));
match (self.state, last_state) {
(UrlLocation::Url(_length, end_offset), _) => {
let mut end = point;
// Extend by one cell for double-width characters
if cell.flags.contains(Flags::WIDE_CHAR) {
end.col += 1;
self.last_point = Some(end);
}
if let Some(url) = self.urls.last_mut() {
let last_index = url.lines.len() - 1;
let last_line = &mut url.lines[last_index];
if last_line.color == cell.fg {
// Update existing line
last_line.end = end;
} else {
// Create new line with different color
url.lines.push(RenderLine { start: point, end, color: cell.fg });
}
// Update offset
url.end_offset = end_offset;
}
},
(UrlLocation::Reset, UrlLocation::Scheme) => {
self.urls.pop();
},
(UrlLocation::Scheme, UrlLocation::Reset) => {
self.urls.push(Url {
lines: vec![RenderLine { start: point, end: point, color: cell.fg }],
end_offset: 0,
num_cols,
});
},
(UrlLocation::Scheme, _) => {
if let Some(url) = self.urls.last_mut() {
if let Some(last_line) = url.lines.last_mut() {
if last_line.color == cell.fg {
last_line.end = point;
} else {
url.lines.push(RenderLine { start: point, end: point, color: cell.fg });
}
}
}
},
_ => (),
}
// Reset at un-wrapped linebreak
if cell.column.0 + 1 == num_cols && !cell.flags.contains(Flags::WRAPLINE) {
self.reset();
}
}
pub fn highlighted(
&self,
config: &Config,
mouse: &Mouse,
mods: ModifiersState,
mouse_mode: bool,
selection: bool,
) -> Option<Url> {
// Make sure all prerequisites for highlighting are met
if selection
|| (mouse_mode && !mods.shift)
|| !mouse.inside_grid
|| config.ui_config.mouse.url.launcher.is_none()
|| !config.ui_config.mouse.url.mods().relaxed_eq(mods)
|| mouse.left_button_state == ElementState::Pressed
{
return None;
}
for url in &self.urls {
if (url.start()..=url.end()).contains(&Point::new(mouse.line, mouse.column)) {
return Some(url.clone());
}
}
None
}
fn reset(&mut self) {
// Remove temporarily stored scheme URLs
if let UrlLocation::Scheme = self.state {
self.urls.pop();
}
self.locator = UrlLocator::new();
self.state = UrlLocation::Reset;
}
}
|
