886 lines
25 KiB
Rust
886 lines
25 KiB
Rust
// Copyright 2016 Joe Wilm, The Alacritty Project Contributors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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//! Exports the `Term` type which is a high-level API for the Grid
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use std::mem;
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use std::ops::{Deref, Range};
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use std::ptr;
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use ansi::{self, Attr, Handler};
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use grid::{Grid, ClearRegion};
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use index::{Cursor, Column, Line};
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use ansi::Color;
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/// RAII type which manages grid state for render
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///
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/// This manages the cursor during a render. The cursor location is inverted to
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/// draw it, and reverted after drawing to maintain state.
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pub struct RenderGrid<'a> {
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inner: &'a mut Grid<Cell>,
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cursor: &'a Cursor,
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mode: TermMode,
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}
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impl<'a> RenderGrid<'a> {
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fn new<'b>(grid: &'b mut Grid<Cell>, cursor: &'b Cursor, mode: TermMode) -> RenderGrid<'b> {
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if mode.contains(mode::SHOW_CURSOR) && grid.contains(cursor) {
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let cell = &mut grid[cursor];
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mem::swap(&mut cell.fg, &mut cell.bg);
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}
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RenderGrid {
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inner: grid,
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cursor: cursor,
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mode: mode,
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}
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}
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}
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impl<'a> Drop for RenderGrid<'a> {
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fn drop(&mut self) {
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if self.mode.contains(mode::SHOW_CURSOR) && self.inner.contains(self.cursor) {
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let cell = &mut self.inner[self.cursor];
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mem::swap(&mut cell.fg, &mut cell.bg);
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}
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}
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}
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impl<'a> Deref for RenderGrid<'a> {
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type Target = Grid<Cell>;
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fn deref(&self) -> &Self::Target {
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self.inner
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}
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}
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/// coerce val to be between min and max
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fn limit<T: PartialOrd>(val: T, min: T, max: T) -> T {
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if val < min {
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min
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} else if val > max {
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max
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} else {
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val
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}
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}
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pub mod cell {
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use ::Rgb;
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bitflags! {
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#[derive(Serialize, Deserialize)]
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pub flags Flags: u32 {
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const INVERSE = 0b00000001,
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const BOLD = 0b00000010,
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const ITALIC = 0b00000100,
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const UNDERLINE = 0b00001000,
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}
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}
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#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
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pub enum Color {
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Rgb(Rgb),
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Ansi(::ansi::Color),
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}
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#[derive(Clone, Debug, Serialize, Deserialize, Eq, PartialEq)]
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pub struct Cell {
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pub c: char,
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pub fg: Color,
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pub bg: Color,
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pub flags: Flags,
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}
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impl Cell {
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pub fn bold(&self) -> bool {
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self.flags.contains(BOLD)
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}
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pub fn new(c: char, fg: Color, bg: Color) -> Cell {
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Cell {
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c: c.into(),
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bg: bg,
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fg: fg,
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flags: Flags::empty(),
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}
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}
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#[inline]
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pub fn reset(&mut self, template: &Cell) {
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// memcpy template to self
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*self = template.clone();
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}
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}
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#[cfg(test)]
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mod tests {
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use super::Color;
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use std::mem;
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// Ensure memory layout is well defined so components like renderer
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// can exploit it.
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//
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// Thankfully, everything is just a u8 for now so no endianness
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// considerations are needed.
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#[test]
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fn color_memory_layout() {
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let rgb_color = Color::Rgb(::Rgb { r: 1, g: 2, b: 3 });
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let ansi_color = Color::Ansi(::ansi::Color::Foreground);
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unsafe {
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// Color::Rgb
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// [discriminant(0), red, green ,blue]
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let bytes: [u8; 4] = mem::transmute_copy(&rgb_color);
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assert_eq!(bytes[0], 0);
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assert_eq!(bytes[1], 1);
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assert_eq!(bytes[2], 2);
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assert_eq!(bytes[3], 3);
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// Color::Ansi
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// [discriminant(1), ansi::Color, 0, 0]
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let bytes: [u8; 4] = mem::transmute_copy(&ansi_color);
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assert_eq!(bytes[0], 1);
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assert_eq!(bytes[1], ::ansi::Color::Foreground as u8);
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}
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}
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}
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}
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pub use self::cell::Cell;
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pub mod mode {
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bitflags! {
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pub flags TermMode: u8 {
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const SHOW_CURSOR = 0b00000001,
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const APP_CURSOR = 0b00000010,
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const APP_KEYPAD = 0b00000100,
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const ANY = 0b11111111,
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const NONE = 0b00000000,
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}
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}
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impl Default for TermMode {
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fn default() -> TermMode {
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SHOW_CURSOR
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}
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}
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}
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pub use self::mode::TermMode;
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pub const TAB_SPACES: usize = 8;
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pub struct Term {
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/// The grid
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grid: Grid<Cell>,
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/// Alternate grid
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alt_grid: Grid<Cell>,
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/// Alt is active
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alt: bool,
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/// The cursor
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cursor: Cursor,
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/// Alt cursor
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alt_cursor: Cursor,
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/// Tabstops
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tabs: Vec<bool>,
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/// Mode flags
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mode: TermMode,
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/// Scroll region
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scroll_region: Range<Line>,
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/// Size
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size_info: SizeInfo,
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/// Template cell
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template_cell: Cell,
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/// Empty cell
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empty_cell: Cell,
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pub dirty: bool,
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}
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/// Terminal size info
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#[derive(Debug, Copy, Clone, Serialize, Deserialize)]
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pub struct SizeInfo {
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/// Terminal window width
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pub width: f32,
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/// Terminal window height
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pub height: f32,
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/// Width of individual cell
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pub cell_width: f32,
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/// Height of individual cell
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pub cell_height: f32,
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}
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impl SizeInfo {
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#[inline]
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pub fn lines(&self) -> Line {
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Line((self.height / self.cell_height) as usize)
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}
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#[inline]
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pub fn cols(&self) -> Column {
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Column((self.width / self.cell_width) as usize)
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}
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}
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impl Term {
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pub fn new(
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size: SizeInfo
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) -> Term {
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let template = Cell::new(
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' ',
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cell::Color::Ansi(Color::Foreground),
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cell::Color::Ansi(Color::Background)
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);
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let num_cols = size.cols();
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let num_lines = size.lines();
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println!("num_cols, num_lines = {}, {}", num_cols, num_lines);
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let grid = Grid::new(num_lines, num_cols, &template);
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let mut tabs = (Column(0)..grid.num_cols())
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.map(|i| (*i as usize) % TAB_SPACES == 0)
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.collect::<Vec<bool>>();
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tabs[0] = false;
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let alt = grid.clone();
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let scroll_region = Line(0)..grid.num_lines();
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Term {
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dirty: true,
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grid: grid,
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alt_grid: alt,
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alt: false,
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cursor: Cursor::default(),
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alt_cursor: Cursor::default(),
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tabs: tabs,
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mode: Default::default(),
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scroll_region: scroll_region,
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size_info: size,
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template_cell: template.clone(),
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empty_cell: template,
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}
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}
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pub fn grid(&self) -> &Grid<Cell> {
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&self.grid
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}
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pub fn render_grid<'a>(&'a mut self) -> RenderGrid<'a> {
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RenderGrid::new(&mut self.grid, &self.cursor, self.mode)
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}
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/// Resize terminal to new dimensions
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pub fn resize(&mut self, width: f32, height: f32) {
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let size = SizeInfo {
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width: width,
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height: height,
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cell_width: self.size_info.cell_width,
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cell_height: self.size_info.cell_height,
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};
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let old_cols = self.size_info.cols();
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let old_lines = self.size_info.lines();
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let num_cols = size.cols();
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let num_lines = size.lines();
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self.size_info = size;
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if old_cols == num_cols && old_lines == num_lines {
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return;
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}
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// Scroll up to keep cursor and as much context as possible in grid. This only runs when the
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// lines decreases.
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self.scroll_region = Line(0)..self.grid.num_lines();
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// Scroll up to keep cursor in terminal
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if self.cursor.line >= num_lines {
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let lines = self.cursor.line - num_lines + 1;
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self.scroll_up(lines);
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self.cursor.line -= lines;
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}
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println!("num_cols, num_lines = {}, {}", num_cols, num_lines);
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// Resize grids to new size
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let template = self.template_cell.clone();
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self.grid.resize(num_lines, num_cols, &template);
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self.alt_grid.resize(num_lines, num_cols, &template);
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// Ensure cursor is in-bounds
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self.cursor.line = limit(self.cursor.line, Line(0), num_lines);
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self.cursor.col = limit(self.cursor.col, Column(0), num_cols);
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// Recreate tabs list
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self.tabs = (Column(0)..self.grid.num_cols()).map(|i| (*i as usize) % TAB_SPACES == 0)
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.collect::<Vec<bool>>();
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self.tabs[0] = false;
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// Make sure bottom of terminal is clear
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let template = self.empty_cell.clone();
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self.grid.clear_region((self.cursor.line).., |c| c.reset(&template));
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self.alt_grid.clear_region((self.cursor.line).., |c| c.reset(&template));
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// Reset scrolling region to new size
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self.scroll_region = Line(0)..self.grid.num_lines();
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}
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#[inline]
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pub fn size_info(&self) -> &SizeInfo {
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&self.size_info
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}
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#[inline]
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pub fn mode(&self) -> &TermMode {
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&self.mode
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}
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pub fn swap_alt(&mut self) {
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self.alt = !self.alt;
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::std::mem::swap(&mut self.grid, &mut self.alt_grid);
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::std::mem::swap(&mut self.cursor, &mut self.alt_cursor);
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if self.alt {
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let template = self.empty_cell.clone();
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self.grid.clear(|c| c.reset(&template));
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}
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}
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/// Scroll screen down
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///
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/// Text moves down; clear at bottom
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#[inline]
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fn scroll_down_relative(&mut self, origin: Line, lines: Line) {
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debug_println!("scroll_down: {}", lines);
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// Copy of cell template; can't have it borrowed when calling clear/scroll
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let template = self.empty_cell.clone();
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// Clear `lines` lines at bottom of area
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{
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let end = self.scroll_region.end;
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let start = end - lines;
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self.grid.clear_region(start..end, |c| c.reset(&template));
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}
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// Scroll between origin and bottom
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{
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let end = self.scroll_region.end;
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let start = origin + lines;
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self.grid.scroll_down(start..end, lines);
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}
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}
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/// Scroll screen up
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///
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/// Text moves up; clear at top
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#[inline]
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fn scroll_up_relative(&mut self, origin: Line, lines: Line) {
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debug_println!("scroll_up: {}", lines);
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// Copy of cell template; can't have it borrowed when calling clear/scroll
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let template = self.empty_cell.clone();
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// Clear `lines` lines starting from origin to origin + lines
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{
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let start = origin;
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let end = start + lines;
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self.grid.clear_region(start..end, |c| c.reset(&template));
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}
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// Scroll from origin to bottom less number of lines
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{
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let start = origin;
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let end = self.scroll_region.end - lines;
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self.grid.scroll_up(start..end, lines);
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}
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}
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}
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impl ansi::TermInfo for Term {
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#[inline]
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fn lines(&self) -> Line {
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self.grid.num_lines()
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}
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#[inline]
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fn cols(&self) -> Column {
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self.grid.num_cols()
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}
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}
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impl ansi::Handler for Term {
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/// A character to be displayed
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#[inline]
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fn input(&mut self, c: char) {
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if self.cursor.col == self.grid.num_cols() {
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debug_println!("wrapping");
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if (self.cursor.line + 1) >= self.scroll_region.end {
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self.linefeed();
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} else {
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self.cursor.line += 1;
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}
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self.cursor.col = Column(0);
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}
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unsafe {
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if ::std::intrinsics::unlikely(self.cursor.line == self.grid.num_lines()) {
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panic!("cursor fell off grid");
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}
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}
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let cell = &mut self.grid[&self.cursor];
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*cell = self.template_cell.clone();
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cell.c = c;
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self.cursor.col += 1;
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}
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#[inline]
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fn goto(&mut self, line: Line, col: Column) {
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debug_println!("goto: line={}, col={}", line, col);
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self.cursor.line = line;
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self.cursor.col = col;
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}
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#[inline]
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fn goto_line(&mut self, line: Line) {
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debug_println!("goto_line: {}", line);
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self.cursor.line = line;
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}
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#[inline]
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fn goto_col(&mut self, col: Column) {
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debug_println!("goto_col: {}", col);
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self.cursor.col = col;
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}
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#[inline]
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fn insert_blank(&mut self, count: Column) {
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// Ensure inserting within terminal bounds
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let count = ::std::cmp::min(count, self.size_info.cols() - self.cursor.col);
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let source = self.cursor.col;
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let destination = self.cursor.col + count;
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let num_cells = (self.size_info.cols() - destination).0;
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let line = self.cursor.line; // borrowck
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let line = &mut self.grid[line];
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unsafe {
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let src = line[source..].as_ptr();
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let dst = line[destination..].as_mut_ptr();
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ptr::copy(src, dst, num_cells);
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}
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// Cells were just moved out towards the end of the line; fill in
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// between source and dest with blanks.
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let template = self.empty_cell.clone();
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for c in &mut line[source..destination] {
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c.reset(&template);
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}
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}
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#[inline]
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fn move_up(&mut self, lines: Line) {
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debug_println!("move_up: {}", lines);
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self.cursor.line -= lines;
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}
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#[inline]
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fn move_down(&mut self, lines: Line) {
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debug_println!("move_down: {}", lines);
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self.cursor.line += lines;
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}
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#[inline]
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fn move_forward(&mut self, cols: Column) {
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debug_println!("move_forward: {}", cols);
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self.cursor.col += cols;
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}
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#[inline]
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fn move_backward(&mut self, cols: Column) {
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debug_println!("move_backward: {}", cols);
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self.cursor.col -= cols;
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}
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#[inline]
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fn identify_terminal(&mut self) {
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err_println!("[unimplemented] identify_terminal");
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}
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#[inline]
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fn move_down_and_cr(&mut self, lines: Line) {
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err_println!("[unimplemented] move_down_and_cr: {}", lines);
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}
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#[inline]
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fn move_up_and_cr(&mut self, lines: Line) {
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err_println!("[unimplemented] move_up_and_cr: {}", lines);
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}
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#[inline]
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fn put_tab(&mut self, mut count: i64) {
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debug_println!("put_tab: {}", count);
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let mut col = self.cursor.col;
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while col < self.grid.num_cols() && count != 0 {
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count -= 1;
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loop {
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if col == self.grid.num_cols() || self.tabs[*col as usize] {
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break;
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}
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col += 1;
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}
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}
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self.cursor.col = col;
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}
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/// Backspace `count` characters
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#[inline]
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fn backspace(&mut self) {
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debug_println!("backspace");
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if self.cursor.col > Column(0) {
|
|
self.cursor.col -= 1;
|
|
}
|
|
}
|
|
|
|
/// Carriage return
|
|
#[inline]
|
|
fn carriage_return(&mut self) {
|
|
debug_println!("carriage_return");
|
|
self.cursor.col = Column(0);
|
|
}
|
|
|
|
/// Linefeed
|
|
#[inline]
|
|
fn linefeed(&mut self) {
|
|
debug_println!("linefeed");
|
|
if self.cursor.line + 1 == self.scroll_region.end {
|
|
self.scroll_up(Line(1));
|
|
} else {
|
|
self.cursor.line += 1;
|
|
}
|
|
}
|
|
|
|
/// Set current position as a tabstop
|
|
#[inline]
|
|
fn bell(&mut self) {
|
|
debug_println!("bell");
|
|
}
|
|
|
|
#[inline]
|
|
fn substitute(&mut self) {
|
|
err_println!("[unimplemented] substitute");
|
|
}
|
|
|
|
#[inline]
|
|
fn newline(&mut self) {
|
|
err_println!("[unimplemented] newline");
|
|
}
|
|
|
|
#[inline]
|
|
fn set_horizontal_tabstop(&mut self) {
|
|
err_println!("[unimplemented] set_horizontal_tabstop");
|
|
}
|
|
|
|
#[inline]
|
|
fn scroll_up(&mut self, lines: Line) {
|
|
let origin = self.scroll_region.start;
|
|
self.scroll_up_relative(origin, lines);
|
|
}
|
|
|
|
#[inline]
|
|
fn scroll_down(&mut self, lines: Line) {
|
|
let origin = self.scroll_region.start;
|
|
self.scroll_down_relative(origin, lines);
|
|
}
|
|
|
|
#[inline]
|
|
fn insert_blank_lines(&mut self, lines: Line) {
|
|
debug_println!("insert_blank_lines: {}", lines);
|
|
if self.scroll_region.contains(self.cursor.line) {
|
|
let origin = self.cursor.line;
|
|
self.scroll_down_relative(origin, lines);
|
|
}
|
|
}
|
|
|
|
#[inline]
|
|
fn delete_lines(&mut self, lines: Line) {
|
|
debug_println!("delete_lines: {}", lines);
|
|
if self.scroll_region.contains(self.cursor.line) {
|
|
let origin = self.cursor.line;
|
|
self.scroll_up_relative(origin, lines);
|
|
}
|
|
}
|
|
|
|
#[inline]
|
|
fn erase_chars(&mut self, count: Column) {
|
|
debug_println!("erase_chars: {}", count);
|
|
let start = self.cursor.col;
|
|
let end = start + count;
|
|
|
|
let row = &mut self.grid[self.cursor.line];
|
|
let template = self.empty_cell.clone();
|
|
for c in &mut row[start..end] {
|
|
c.reset(&template);
|
|
}
|
|
}
|
|
|
|
#[inline]
|
|
fn delete_chars(&mut self, count: Column) {
|
|
// Ensure deleting within terminal bounds
|
|
let count = ::std::cmp::min(count, self.size_info.cols());
|
|
|
|
let start = self.cursor.col;
|
|
let end = self.cursor.col + count;
|
|
let n = (self.size_info.cols() - end).0;
|
|
|
|
let line = self.cursor.line; // borrowck
|
|
let line = &mut self.grid[line];
|
|
|
|
unsafe {
|
|
let src = line[end..].as_ptr();
|
|
let dst = line[start..].as_mut_ptr();
|
|
|
|
ptr::copy(src, dst, n);
|
|
}
|
|
|
|
// Clear last `count` cells in line. If deleting 1 char, need to delete 1 cell.
|
|
let template = self.empty_cell.clone();
|
|
let end = self.size_info.cols() - count;
|
|
for c in &mut line[end..] {
|
|
c.reset(&template);
|
|
}
|
|
}
|
|
|
|
#[inline]
|
|
fn move_backward_tabs(&mut self, count: i64) {
|
|
err_println!("[unimplemented] move_backward_tabs: {}", count);
|
|
}
|
|
|
|
#[inline]
|
|
fn move_forward_tabs(&mut self, count: i64) {
|
|
err_println!("[unimplemented] move_forward_tabs: {}", count);
|
|
}
|
|
|
|
#[inline]
|
|
fn save_cursor_position(&mut self) {
|
|
err_println!("[unimplemented] save_cursor_position");
|
|
}
|
|
|
|
#[inline]
|
|
fn restore_cursor_position(&mut self) {
|
|
err_println!("[unimplemented] restore_cursor_position");
|
|
}
|
|
|
|
#[inline]
|
|
fn clear_line(&mut self, mode: ansi::LineClearMode) {
|
|
debug_println!("clear_line: {:?}", mode);
|
|
let template = self.empty_cell.clone();
|
|
match mode {
|
|
ansi::LineClearMode::Right => {
|
|
let row = &mut self.grid[self.cursor.line];
|
|
for cell in &mut row[self.cursor.col..] {
|
|
cell.reset(&template);
|
|
}
|
|
},
|
|
ansi::LineClearMode::Left => {
|
|
let row = &mut self.grid[self.cursor.line];
|
|
for cell in &mut row[..(self.cursor.col + 1)] {
|
|
cell.reset(&template);
|
|
}
|
|
},
|
|
ansi::LineClearMode::All => {
|
|
let row = &mut self.grid[self.cursor.line];
|
|
for cell in &mut row[..] {
|
|
cell.reset(&template);
|
|
}
|
|
},
|
|
}
|
|
}
|
|
|
|
#[inline]
|
|
fn clear_screen(&mut self, mode: ansi::ClearMode) {
|
|
debug_println!("clear_screen: {:?}", mode);
|
|
let template = self.empty_cell.clone();
|
|
match mode {
|
|
ansi::ClearMode::Below => {
|
|
for row in &mut self.grid[self.cursor.line..] {
|
|
for cell in row {
|
|
cell.reset(&template);
|
|
}
|
|
}
|
|
},
|
|
ansi::ClearMode::All => {
|
|
self.grid.clear(|c| c.reset(&template));
|
|
},
|
|
_ => {
|
|
panic!("ansi::ClearMode::Above not implemented");
|
|
}
|
|
}
|
|
}
|
|
|
|
#[inline]
|
|
fn clear_tabs(&mut self, mode: ansi::TabulationClearMode) {
|
|
err_println!("[unimplemented] clear_tabs: {:?}", mode);
|
|
}
|
|
|
|
#[inline]
|
|
fn reset_state(&mut self) {
|
|
err_println!("[unimplemented] reset_state");
|
|
}
|
|
|
|
#[inline]
|
|
fn reverse_index(&mut self) {
|
|
debug_println!("reverse_index");
|
|
// if cursor is at the top
|
|
if self.cursor.line == self.scroll_region.start {
|
|
self.scroll_down(Line(1));
|
|
} else {
|
|
self.cursor.line -= 1;
|
|
}
|
|
}
|
|
|
|
/// set a terminal attribute
|
|
#[inline]
|
|
fn terminal_attribute(&mut self, attr: Attr) {
|
|
debug_println!("Set Attribute: {:?}", attr);
|
|
match attr {
|
|
Attr::Foreground(named_color) => {
|
|
self.template_cell.fg = cell::Color::Ansi(named_color);
|
|
},
|
|
Attr::Background(named_color) => {
|
|
self.template_cell.bg = cell::Color::Ansi(named_color);
|
|
},
|
|
Attr::ForegroundSpec(rgb) => {
|
|
self.template_cell.fg = cell::Color::Rgb(rgb);
|
|
},
|
|
Attr::BackgroundSpec(rgb) => {
|
|
self.template_cell.bg = cell::Color::Rgb(rgb);
|
|
},
|
|
Attr::Reset => {
|
|
self.template_cell.fg = cell::Color::Ansi(Color::Foreground);
|
|
self.template_cell.bg = cell::Color::Ansi(Color::Background);
|
|
self.template_cell.flags = cell::Flags::empty();
|
|
},
|
|
Attr::Reverse => self.template_cell.flags.insert(cell::INVERSE),
|
|
Attr::CancelReverse => self.template_cell.flags.remove(cell::INVERSE),
|
|
Attr::Bold => self.template_cell.flags.insert(cell::BOLD),
|
|
Attr::CancelBoldDim => self.template_cell.flags.remove(cell::BOLD),
|
|
Attr::Italic => self.template_cell.flags.insert(cell::ITALIC),
|
|
Attr::CancelItalic => self.template_cell.flags.remove(cell::ITALIC),
|
|
Attr::Underscore => self.template_cell.flags.insert(cell::UNDERLINE),
|
|
Attr::CancelUnderline => self.template_cell.flags.remove(cell::UNDERLINE),
|
|
_ => {
|
|
debug_println!("Term got unhandled attr: {:?}", attr);
|
|
}
|
|
}
|
|
}
|
|
|
|
#[inline]
|
|
fn set_mode(&mut self, mode: ansi::Mode) {
|
|
debug_println!("set_mode: {:?}", mode);
|
|
match mode {
|
|
ansi::Mode::SwapScreenAndSetRestoreCursor => self.swap_alt(),
|
|
ansi::Mode::ShowCursor => self.mode.insert(mode::SHOW_CURSOR),
|
|
ansi::Mode::CursorKeys => self.mode.insert(mode::APP_CURSOR),
|
|
_ => {
|
|
debug_println!(".. ignoring set_mode");
|
|
}
|
|
}
|
|
}
|
|
|
|
#[inline]
|
|
fn unset_mode(&mut self,mode: ansi::Mode) {
|
|
debug_println!("unset_mode: {:?}", mode);
|
|
match mode {
|
|
ansi::Mode::SwapScreenAndSetRestoreCursor => self.swap_alt(),
|
|
ansi::Mode::ShowCursor => self.mode.remove(mode::SHOW_CURSOR),
|
|
ansi::Mode::CursorKeys => self.mode.remove(mode::APP_CURSOR),
|
|
_ => {
|
|
debug_println!(".. ignoring unset_mode");
|
|
}
|
|
}
|
|
}
|
|
|
|
#[inline]
|
|
fn set_scrolling_region(&mut self, region: Range<Line>) {
|
|
debug_println!("set scroll region: {:?}", region);
|
|
self.scroll_region = region;
|
|
self.goto(Line(0), Column(0));
|
|
}
|
|
|
|
#[inline]
|
|
fn set_keypad_application_mode(&mut self) {
|
|
debug_println!("set mode::APP_KEYPAD");
|
|
self.mode.insert(mode::APP_KEYPAD);
|
|
}
|
|
|
|
#[inline]
|
|
fn unset_keypad_application_mode(&mut self) {
|
|
debug_println!("unset mode::APP_KEYPAD");
|
|
self.mode.remove(mode::APP_KEYPAD);
|
|
}
|
|
}
|
|
|
|
#[cfg(test)]
|
|
mod tests {
|
|
extern crate serde_json;
|
|
|
|
use ansi::Color;
|
|
use grid::Grid;
|
|
use index::{Line, Column};
|
|
use term::{cell, Cell};
|
|
|
|
/// Check that the grid can be serialized back and forth losslessly
|
|
///
|
|
/// This test is in the term module as opposed to the grid since we want to
|
|
/// test this property with a T=Cell.
|
|
#[test]
|
|
fn grid_serde() {
|
|
let template = Cell::new(
|
|
' ',
|
|
cell::Color::Ansi(Color::Foreground),
|
|
cell::Color::Ansi(Color::Background)
|
|
);
|
|
|
|
let grid = Grid::new(Line(24), Column(80), &template);
|
|
let serialized = serde_json::to_string(&grid).expect("ser");
|
|
let deserialized = serde_json::from_str::<Grid<Cell>>(&serialized)
|
|
.expect("de");
|
|
|
|
assert_eq!(deserialized, grid);
|
|
}
|
|
}
|