forked from Mirrors/helix
Initial import.
Blaž Hrastnik
5 years ago
commit
240e5f4e3d
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|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "thiserror-impl"
|
||||||
|
version = "1.0.18"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "ab81dbd1cd69cd2ce22ecfbdd3bdb73334ba25350649408cc6c085f46d89573d"
|
||||||
|
dependencies = [
|
||||||
|
"proc-macro2 1.0.13",
|
||||||
|
"quote 1.0.6",
|
||||||
|
"syn 1.0.22",
|
||||||
|
]
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "thread_local"
|
||||||
|
version = "1.0.1"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "d40c6d1b69745a6ec6fb1ca717914848da4b44ae29d9b3080cbee91d72a69b14"
|
||||||
|
dependencies = [
|
||||||
|
"lazy_static",
|
||||||
|
]
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "unicode-segmentation"
|
||||||
|
version = "1.6.0"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "e83e153d1053cbb5a118eeff7fd5be06ed99153f00dbcd8ae310c5fb2b22edc0"
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "unicode-width"
|
||||||
|
version = "0.1.7"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "caaa9d531767d1ff2150b9332433f32a24622147e5ebb1f26409d5da67afd479"
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "unicode-xid"
|
||||||
|
version = "0.1.0"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "fc72304796d0818e357ead4e000d19c9c174ab23dc11093ac919054d20a6a7fc"
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "unicode-xid"
|
||||||
|
version = "0.2.0"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "826e7639553986605ec5979c7dd957c7895e93eabed50ab2ffa7f6128a75097c"
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "utf8parse"
|
||||||
|
version = "0.1.1"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "8772a4ccbb4e89959023bc5b7cb8623a795caa7092d99f3aa9501b9484d4557d"
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "version_check"
|
||||||
|
version = "0.9.1"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "078775d0255232fb988e6fccf26ddc9d1ac274299aaedcedce21c6f72cc533ce"
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "vtparse"
|
||||||
|
version = "0.2.2"
|
||||||
|
source = "git+https://github.com/wez/wezterm#58686f925f0f4a0942452e8feb0ababd48ec936c"
|
||||||
|
dependencies = [
|
||||||
|
"utf8parse",
|
||||||
|
]
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "wasi"
|
||||||
|
version = "0.9.0+wasi-snapshot-preview1"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "cccddf32554fecc6acb585f82a32a72e28b48f8c4c1883ddfeeeaa96f7d8e519"
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "winapi"
|
||||||
|
version = "0.3.8"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "8093091eeb260906a183e6ae1abdba2ef5ef2257a21801128899c3fc699229c6"
|
||||||
|
dependencies = [
|
||||||
|
"winapi-i686-pc-windows-gnu",
|
||||||
|
"winapi-x86_64-pc-windows-gnu",
|
||||||
|
]
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "winapi-i686-pc-windows-gnu"
|
||||||
|
version = "0.4.0"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "winapi-x86_64-pc-windows-gnu"
|
||||||
|
version = "0.4.0"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "xi-unicode"
|
||||||
|
version = "0.2.0"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "7395cdb9d0a6219fa0ea77d08c946adf9c1984c72fcd443ace30365f3daadef7"
|
||||||
@ -0,0 +1,5 @@
|
|||||||
|
[workspace]
|
||||||
|
members = [
|
||||||
|
"helix-core",
|
||||||
|
"helix-term",
|
||||||
|
]
|
||||||
@ -0,0 +1,80 @@
|
|||||||
|
- server-client architecture via gRPC, UI separate from core
|
||||||
|
- multi cursor based editing and slicing
|
||||||
|
- WASM based plugins (builtin LSP & fuzzy file finder)
|
||||||
|
- piece table-based tree structure for changes
|
||||||
|
|
||||||
|
|
||||||
|
Structure similar to codemirror:
|
||||||
|
|
||||||
|
text (ropes)
|
||||||
|
- column utils, stuff like tab aware (row, col) -> char pos translation
|
||||||
|
- word/grapheme/code point utils and iterators
|
||||||
|
state
|
||||||
|
- transactions
|
||||||
|
- changes
|
||||||
|
- annotations (time changed etc)
|
||||||
|
- state effects
|
||||||
|
- additional editor state as facets
|
||||||
|
- snapshots as an async view into current state
|
||||||
|
- selections { anchor (nonmoving), head (moving) from/to } -> SelectionSet with a primary
|
||||||
|
- cursor is just a single range selection
|
||||||
|
- markers
|
||||||
|
track a position inside text that synchronizes with edits
|
||||||
|
{ doc, selection, update(), splice, changes(), facets, tabSize, identUnit, lineSeparator, changeFilter/transactionFilter to modify stuff before }
|
||||||
|
view (actual UI)
|
||||||
|
- renders via termwiz
|
||||||
|
- viewport(Lines) -> what's actually visible
|
||||||
|
- extend the view via Decorations (inline styling) or Components (UI)
|
||||||
|
- mark / wieget / line / replace decoration
|
||||||
|
commands (transform state)
|
||||||
|
- movement
|
||||||
|
- selection extension
|
||||||
|
- deletion
|
||||||
|
- indentation
|
||||||
|
keymap (maps keys to commands)
|
||||||
|
history (undo tree via immutable ropes)
|
||||||
|
- undoes transactions
|
||||||
|
- invert changes (generates a revert)
|
||||||
|
(collab mode)
|
||||||
|
gutter (line numbers, diagnostic marker, etc) -> ties into UI components
|
||||||
|
rangeset/span -> mappable over changes (can be a marker primitive?)
|
||||||
|
syntax (treesitter)
|
||||||
|
- indentation strategies
|
||||||
|
fold
|
||||||
|
selections (select mode/multiselect)
|
||||||
|
matchbrackets
|
||||||
|
closebrackets
|
||||||
|
special-chars (shows dots etc for specials)
|
||||||
|
panel (for UI: file pickers, search dialogs, etc)
|
||||||
|
tooltip (for UI)
|
||||||
|
search (regex? pcre)
|
||||||
|
lint (async linters)
|
||||||
|
lsp
|
||||||
|
highlight (?)
|
||||||
|
stream-syntax
|
||||||
|
autocomplete
|
||||||
|
comment (gc, etc for auto commenting)
|
||||||
|
snippets
|
||||||
|
|
||||||
|
terminal mode?
|
||||||
|
|
||||||
|
plugins can contain more commands/ui abstractions to use elsewhere
|
||||||
|
|
||||||
|
languageData as presets for each language (syntax, indent, comment, etc)
|
||||||
|
|
||||||
|
TODO: determine rust vs script portions
|
||||||
|
|
||||||
|
vim stuff:
|
||||||
|
motions/operators/text objects
|
||||||
|
full visual mode
|
||||||
|
macros
|
||||||
|
jump lists
|
||||||
|
marks
|
||||||
|
yank/paste
|
||||||
|
conceal for markdown markers, etc
|
||||||
|
|
||||||
|
|
||||||
|
---
|
||||||
|
|
||||||
|
codemirror uses offsets exclusively with Line being computed when necessary
|
||||||
|
(with start/end extents)
|
||||||
@ -0,0 +1,2 @@
|
|||||||
|
/target
|
||||||
|
Cargo.lock
|
||||||
@ -0,0 +1,11 @@
|
|||||||
|
[package]
|
||||||
|
name = "helix-core"
|
||||||
|
version = "0.1.0"
|
||||||
|
authors = ["Blaž Hrastnik <blaz@mxxn.io>"]
|
||||||
|
edition = "2018"
|
||||||
|
|
||||||
|
# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
|
||||||
|
|
||||||
|
[dependencies]
|
||||||
|
ropey = "1.1.0"
|
||||||
|
# slab = "0.4.2"
|
||||||
@ -0,0 +1,5 @@
|
|||||||
|
mod position;
|
||||||
|
mod range;
|
||||||
|
|
||||||
|
use position::Position;
|
||||||
|
use range::Range;
|
||||||
@ -0,0 +1,27 @@
|
|||||||
|
/// Represents a single point in a text buffer. Zero indexed.
|
||||||
|
#[derive(Default, Clone, Copy, PartialEq, Eq, PartialOrd, Ord)]
|
||||||
|
pub struct Position {
|
||||||
|
pub row: usize,
|
||||||
|
pub col: usize,
|
||||||
|
}
|
||||||
|
|
||||||
|
impl Position {
|
||||||
|
pub fn new(row: usize, col: usize) -> Self {
|
||||||
|
Self { row, col }
|
||||||
|
}
|
||||||
|
|
||||||
|
pub fn is_zero(self) -> bool {
|
||||||
|
self.row == 0 && self.col == 0
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
#[cfg(test)]
|
||||||
|
mod test {
|
||||||
|
use super::*;
|
||||||
|
|
||||||
|
#[test]
|
||||||
|
fn test_ordering() {
|
||||||
|
// (0, 5) is less than (1, 0 w v f)
|
||||||
|
assert!(Position::new(0, 5) < Position::new(1, 0));
|
||||||
|
}
|
||||||
|
}
|
||||||
@ -0,0 +1,9 @@
|
|||||||
|
use crate::Position;
|
||||||
|
|
||||||
|
#[derive(Clone, Copy, PartialEq, Eq)]
|
||||||
|
pub struct Range {
|
||||||
|
pub start: Position,
|
||||||
|
pub end: Position,
|
||||||
|
}
|
||||||
|
|
||||||
|
// range traversal iters
|
||||||
@ -0,0 +1 @@
|
|||||||
|
/target
|
||||||
@ -0,0 +1,19 @@
|
|||||||
|
[package]
|
||||||
|
name = "helix-term"
|
||||||
|
version = "0.1.0"
|
||||||
|
authors = ["Blaž Hrastnik <blaz@mxxn.io>"]
|
||||||
|
edition = "2018"
|
||||||
|
|
||||||
|
# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
|
||||||
|
|
||||||
|
[[bin]]
|
||||||
|
name = "hx"
|
||||||
|
path = "src/main.rs"
|
||||||
|
|
||||||
|
# [[bin]]
|
||||||
|
# name = "line"
|
||||||
|
# path = "src/line.rs"
|
||||||
|
|
||||||
|
[dependencies]
|
||||||
|
termwiz = { git = "https://github.com/wez/wezterm", features = ["widgets"] }
|
||||||
|
anyhow = "1.0.31"
|
||||||
@ -0,0 +1,7 @@
|
|||||||
|
|
||||||
|
window -> buffer -> text
|
||||||
|
\-> contains "view", a viewport into the buffer
|
||||||
|
|
||||||
|
view
|
||||||
|
\-> selections etc
|
||||||
|
-> cursor
|
||||||
@ -0,0 +1,111 @@
|
|||||||
|
use termwiz::cell::AttributeChange;
|
||||||
|
use termwiz::color::{AnsiColor, ColorAttribute, RgbColor};
|
||||||
|
use termwiz::lineedit::*;
|
||||||
|
|
||||||
|
#[derive(Default)]
|
||||||
|
struct Host {
|
||||||
|
history: BasicHistory,
|
||||||
|
}
|
||||||
|
|
||||||
|
impl LineEditorHost for Host {
|
||||||
|
// Render the prompt with a darkslateblue background color if
|
||||||
|
// the terminal supports true color, otherwise render it with
|
||||||
|
// a navy blue ansi color.
|
||||||
|
fn render_prompt(&self, prompt: &str) -> Vec<OutputElement> {
|
||||||
|
vec![
|
||||||
|
OutputElement::Attribute(AttributeChange::Background(
|
||||||
|
ColorAttribute::TrueColorWithPaletteFallback(
|
||||||
|
RgbColor::from_named("darkslateblue").unwrap(),
|
||||||
|
AnsiColor::Navy.into(),
|
||||||
|
),
|
||||||
|
)),
|
||||||
|
OutputElement::Text(prompt.to_owned()),
|
||||||
|
]
|
||||||
|
}
|
||||||
|
|
||||||
|
fn history(&mut self) -> &mut dyn History {
|
||||||
|
&mut self.history
|
||||||
|
}
|
||||||
|
|
||||||
|
/// Demo of the completion API for words starting with "h" or "he"
|
||||||
|
fn complete(&self, line: &str, cursor_position: usize) -> Vec<CompletionCandidate> {
|
||||||
|
let mut candidates = vec![];
|
||||||
|
if let Some((range, word)) = word_at_cursor(line, cursor_position) {
|
||||||
|
let words = &["hello", "help", "he-man"];
|
||||||
|
|
||||||
|
for w in words {
|
||||||
|
if w.starts_with(word) {
|
||||||
|
candidates.push(CompletionCandidate {
|
||||||
|
range: range.clone(),
|
||||||
|
text: w.to_string(),
|
||||||
|
});
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
candidates
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
/// This is a conceptually simple function that computes the bounds
|
||||||
|
/// of the whitespace delimited word at the specified cursor position
|
||||||
|
/// in the supplied line string.
|
||||||
|
/// It returns the range and the corresponding slice out of the line.
|
||||||
|
/// This function is sufficient for example purposes; in a real application
|
||||||
|
/// the equivalent function would need to be aware of quoting and other
|
||||||
|
/// application specific context.
|
||||||
|
fn word_at_cursor(line: &str, cursor_position: usize) -> Option<(std::ops::Range<usize>, &str)> {
|
||||||
|
let char_indices: Vec<(usize, char)> = line.char_indices().collect();
|
||||||
|
if char_indices.is_empty() {
|
||||||
|
return None;
|
||||||
|
}
|
||||||
|
let char_position = char_indices
|
||||||
|
.iter()
|
||||||
|
.position(|(idx, _)| *idx == cursor_position)
|
||||||
|
.unwrap_or(char_indices.len());
|
||||||
|
|
||||||
|
// Look back until we find whitespace
|
||||||
|
let mut start_position = char_position;
|
||||||
|
while start_position > 0
|
||||||
|
&& start_position <= char_indices.len()
|
||||||
|
&& !char_indices[start_position - 1].1.is_whitespace()
|
||||||
|
{
|
||||||
|
start_position -= 1;
|
||||||
|
}
|
||||||
|
|
||||||
|
// Look forwards until we find whitespace
|
||||||
|
let mut end_position = char_position;
|
||||||
|
while end_position < char_indices.len() && !char_indices[end_position].1.is_whitespace() {
|
||||||
|
end_position += 1;
|
||||||
|
}
|
||||||
|
|
||||||
|
if end_position > start_position {
|
||||||
|
let range = char_indices[start_position].0
|
||||||
|
..char_indices
|
||||||
|
.get(end_position)
|
||||||
|
.map(|c| c.0 + 1)
|
||||||
|
.unwrap_or(line.len());
|
||||||
|
Some((range.clone(), &line[range]))
|
||||||
|
} else {
|
||||||
|
None
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
fn main() -> anyhow::Result<()> {
|
||||||
|
println!("Type `exit` to quit this example, or start a word with `h` and press Tab.");
|
||||||
|
let mut terminal = line_editor_terminal()?;
|
||||||
|
let mut editor = LineEditor::new(&mut terminal);
|
||||||
|
|
||||||
|
let mut host = Host::default();
|
||||||
|
loop {
|
||||||
|
if let Some(line) = editor.read_line(&mut host)? {
|
||||||
|
println!("read line: {:?}", line);
|
||||||
|
if line == "exit" {
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
|
||||||
|
host.history().add(&line);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
Ok(())
|
||||||
|
}
|
||||||
@ -0,0 +1,227 @@
|
|||||||
|
//! This example shows how to make a basic widget that accumulates
|
||||||
|
//! text input and renders it to the screen
|
||||||
|
#![allow(unused)]
|
||||||
|
use anyhow::Error;
|
||||||
|
use termwiz::caps::Capabilities;
|
||||||
|
use termwiz::cell::AttributeChange;
|
||||||
|
use termwiz::color::{AnsiColor, ColorAttribute, RgbColor};
|
||||||
|
use termwiz::input::*;
|
||||||
|
use termwiz::surface::Change;
|
||||||
|
use termwiz::terminal::buffered::BufferedTerminal;
|
||||||
|
use termwiz::terminal::{new_terminal, Terminal};
|
||||||
|
use termwiz::widgets::*;
|
||||||
|
|
||||||
|
/// This is a widget for our application
|
||||||
|
struct MainScreen {}
|
||||||
|
|
||||||
|
impl MainScreen {
|
||||||
|
pub fn new() -> Self {
|
||||||
|
Self {}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
impl Widget for MainScreen {
|
||||||
|
fn process_event(&mut self, event: &WidgetEvent, _args: &mut UpdateArgs) -> bool {
|
||||||
|
true // handled it all
|
||||||
|
}
|
||||||
|
|
||||||
|
/// Draw ourselves into the surface provided by RenderArgs
|
||||||
|
fn render(&mut self, args: &mut RenderArgs) {
|
||||||
|
// args.surface.add_change(Change::ClearScreen(
|
||||||
|
// ColorAttribute::TrueColorWithPaletteFallback(
|
||||||
|
// RgbColor::new(0x31, 0x1B, 0x92),
|
||||||
|
// AnsiColor::Black.into(),
|
||||||
|
// ),
|
||||||
|
// ));
|
||||||
|
// args.surface
|
||||||
|
// .add_change(Change::Attribute(AttributeChange::Foreground(
|
||||||
|
// ColorAttribute::TrueColorWithPaletteFallback(
|
||||||
|
// RgbColor::new(0xB3, 0x88, 0xFF),
|
||||||
|
// AnsiColor::Purple.into(),
|
||||||
|
// ),
|
||||||
|
// )));
|
||||||
|
}
|
||||||
|
|
||||||
|
fn get_size_constraints(&self) -> layout::Constraints {
|
||||||
|
let mut constraints = layout::Constraints::default();
|
||||||
|
constraints.child_orientation = layout::ChildOrientation::Vertical;
|
||||||
|
constraints
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
struct Buffer<'a> {
|
||||||
|
/// Holds the input text that we wish the widget to display
|
||||||
|
text: &'a mut String,
|
||||||
|
}
|
||||||
|
|
||||||
|
impl<'a> Buffer<'a> {
|
||||||
|
/// Initialize the widget with the input text
|
||||||
|
pub fn new(text: &'a mut String) -> Self {
|
||||||
|
Self { text }
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
impl<'a> Widget for Buffer<'a> {
|
||||||
|
fn process_event(&mut self, event: &WidgetEvent, _args: &mut UpdateArgs) -> bool {
|
||||||
|
match event {
|
||||||
|
WidgetEvent::Input(InputEvent::Key(KeyEvent {
|
||||||
|
key: KeyCode::Char(c),
|
||||||
|
..
|
||||||
|
})) => self.text.push(*c),
|
||||||
|
WidgetEvent::Input(InputEvent::Key(KeyEvent {
|
||||||
|
key: KeyCode::Enter,
|
||||||
|
..
|
||||||
|
})) => {
|
||||||
|
self.text.push_str("\r\n");
|
||||||
|
}
|
||||||
|
WidgetEvent::Input(InputEvent::Paste(s)) => {
|
||||||
|
self.text.push_str(&s);
|
||||||
|
}
|
||||||
|
_ => {}
|
||||||
|
}
|
||||||
|
|
||||||
|
true // handled it all
|
||||||
|
}
|
||||||
|
|
||||||
|
/// Draw ourselves into the surface provided by RenderArgs
|
||||||
|
fn render(&mut self, args: &mut RenderArgs) {
|
||||||
|
args.surface
|
||||||
|
.add_change(Change::ClearScreen(ColorAttribute::Default));
|
||||||
|
|
||||||
|
// args.surface
|
||||||
|
// .add_change(Change::Attribute(AttributeChange::Foreground(
|
||||||
|
// ColorAttribute::TrueColorWithPaletteFallback(
|
||||||
|
// RgbColor::new(0x11, 0x00, 0xFF),
|
||||||
|
// AnsiColor::Purple.into(),
|
||||||
|
// ),
|
||||||
|
// )));
|
||||||
|
let dims = args.surface.dimensions();
|
||||||
|
args.surface
|
||||||
|
.add_change(format!("🤷 surface size is {:?}\r\n", dims));
|
||||||
|
args.surface.add_change(self.text.clone());
|
||||||
|
|
||||||
|
// Place the cursor at the end of the text.
|
||||||
|
// A more advanced text editing widget would manage the
|
||||||
|
// cursor position differently.
|
||||||
|
*args.cursor = CursorShapeAndPosition {
|
||||||
|
coords: args.surface.cursor_position().into(),
|
||||||
|
shape: termwiz::surface::CursorShape::SteadyBar,
|
||||||
|
..Default::default()
|
||||||
|
};
|
||||||
|
}
|
||||||
|
|
||||||
|
fn get_size_constraints(&self) -> layout::Constraints {
|
||||||
|
let mut c = layout::Constraints::default();
|
||||||
|
c.set_valign(layout::VerticalAlignment::Top);
|
||||||
|
c
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
struct StatusLine {}
|
||||||
|
|
||||||
|
impl StatusLine {
|
||||||
|
pub fn new() -> Self {
|
||||||
|
StatusLine {}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
impl Widget for StatusLine {
|
||||||
|
fn process_event(&mut self, event: &WidgetEvent, _args: &mut UpdateArgs) -> bool {
|
||||||
|
true
|
||||||
|
}
|
||||||
|
|
||||||
|
fn render(&mut self, args: &mut RenderArgs) {
|
||||||
|
args.surface.add_change(Change::ClearScreen(
|
||||||
|
ColorAttribute::TrueColorWithPaletteFallback(
|
||||||
|
RgbColor::new(0xFF, 0xFF, 0xFF),
|
||||||
|
AnsiColor::Black.into(),
|
||||||
|
),
|
||||||
|
));
|
||||||
|
args.surface
|
||||||
|
.add_change(Change::Attribute(AttributeChange::Foreground(
|
||||||
|
ColorAttribute::TrueColorWithPaletteFallback(
|
||||||
|
RgbColor::new(0x00, 0x00, 0x00),
|
||||||
|
AnsiColor::Black.into(),
|
||||||
|
),
|
||||||
|
)));
|
||||||
|
|
||||||
|
args.surface.add_change(" helix");
|
||||||
|
}
|
||||||
|
|
||||||
|
fn get_size_constraints(&self) -> layout::Constraints {
|
||||||
|
*layout::Constraints::default()
|
||||||
|
.set_fixed_height(1)
|
||||||
|
.set_valign(layout::VerticalAlignment::Bottom)
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
fn main() -> Result<(), Error> {
|
||||||
|
// Start with an empty string; typing into the app will
|
||||||
|
// update this string.
|
||||||
|
let mut typed_text = String::new();
|
||||||
|
|
||||||
|
{
|
||||||
|
// Create a terminal and put it into full screen raw mode
|
||||||
|
let caps = Capabilities::new_from_env()?;
|
||||||
|
let mut buf = BufferedTerminal::new(new_terminal(caps)?)?;
|
||||||
|
buf.terminal().enter_alternate_screen()?;
|
||||||
|
buf.terminal().set_raw_mode()?;
|
||||||
|
|
||||||
|
// Set up the UI
|
||||||
|
let mut ui = Ui::new();
|
||||||
|
|
||||||
|
let root_id = ui.set_root(MainScreen::new());
|
||||||
|
let buffer_id = ui.add_child(root_id, Buffer::new(&mut typed_text));
|
||||||
|
// let root_id = ui.set_root(Buffer::new(&mut typed_text));
|
||||||
|
ui.add_child(root_id, StatusLine::new());
|
||||||
|
ui.set_focus(buffer_id);
|
||||||
|
|
||||||
|
loop {
|
||||||
|
ui.process_event_queue()?;
|
||||||
|
|
||||||
|
// After updating and processing all of the widgets, compose them
|
||||||
|
// and render them to the screen.
|
||||||
|
if ui.render_to_screen(&mut buf)? {
|
||||||
|
// We have more events to process immediately; don't block waiting
|
||||||
|
// for input below, but jump to the top of the loop to re-run the
|
||||||
|
// updates.
|
||||||
|
continue;
|
||||||
|
}
|
||||||
|
// Compute an optimized delta to apply to the terminal and display it
|
||||||
|
buf.flush()?;
|
||||||
|
|
||||||
|
// Wait for user input
|
||||||
|
match buf.terminal().poll_input(None) {
|
||||||
|
Ok(Some(InputEvent::Resized { rows, cols })) => {
|
||||||
|
// FIXME: this is working around a bug where we don't realize
|
||||||
|
// that we should redraw everything on resize in BufferedTerminal.
|
||||||
|
buf.add_change(Change::ClearScreen(Default::default()));
|
||||||
|
buf.resize(cols, rows);
|
||||||
|
}
|
||||||
|
Ok(Some(input)) => match input {
|
||||||
|
InputEvent::Key(KeyEvent {
|
||||||
|
key: KeyCode::Escape,
|
||||||
|
..
|
||||||
|
}) => {
|
||||||
|
// Quit the app when escape is pressed
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
input @ _ => {
|
||||||
|
// Feed input into the Ui
|
||||||
|
ui.queue_event(WidgetEvent::Input(input));
|
||||||
|
}
|
||||||
|
},
|
||||||
|
Ok(None) => {}
|
||||||
|
Err(e) => {
|
||||||
|
print!("{:?}\r\n", e);
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
// After we've stopped the full screen raw terminal,
|
||||||
|
// print out the final edited value of the input text.
|
||||||
|
println!("The text you entered: {}", typed_text);
|
||||||
|
|
||||||
|
Ok(())
|
||||||
|
}
|
||||||
Loading…
Reference in New Issue