A simple CPU rendered GUI IDE experience.
add home/end
| -rw-r--r-- | src/main.rs | 2 | ||||
| -rw-r--r-- | src/text.rs | 26 |
2 files changed, 28 insertions, 0 deletions
diff --git a/src/main.rs b/src/main.rs index 99ccab7..8425ea5 100644 --- a/src/main.rs +++ b/src/main.rs @@ -158,6 +158,8 @@ pub(crate) fn entry(event_loop: EventLoop<()>) { Named(Backspace) => text.backspace(), Named(ArrowLeft) => text.left(), + Named(Home) => text.home(), + Named(End) => text.end(), Named(ArrowRight)=> text.right(), Named(ArrowUp) => text.up(), Named(ArrowDown) => text.down(), diff --git a/src/text.rs b/src/text.rs index f2e3c42..af0c07b 100644 --- a/src/text.rs +++ b/src/text.rs @@ -61,6 +61,32 @@ impl TextArea { self.setc(); } + #[implicit_fn::implicit_fn] + pub fn home(&mut self) { + let beg = + self.rope.line_to_char(self.rope.char_to_line(self.cursor)); + let i = self.cursor - beg; + let l = self.rope.line(self.rope.char_to_line(self.cursor)); + let whitespaces = l.chars().take_while(_.is_whitespace()).count(); + if i == whitespaces { + self.cursor = beg; + self.column = 0; + } else { + self.cursor = whitespaces + beg; + self.column = whitespaces; + } + } + + pub fn end(&mut self) { + let i = self.rope.char_to_line(self.cursor); + let beg = self.rope.line_to_char(i); + + let l = self.rope.line(self.rope.char_to_line(self.cursor)); + self.cursor = beg + l.len_chars() + - self.rope.get_line(i + 1).map(|_| 1).unwrap_or(0); + self.setc(); + } + #[lower::apply(saturating)] pub fn right(&mut self) { self.cursor += 1; |