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Support DECOM (Origin Mode)

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This commit is contained in:
Joe Wilm 2017-04-18 22:59:24 -07:00
parent 2bcd165a78
commit 197e910d63
1 changed files with 33 additions and 18 deletions
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51
src/term/mod.rs
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@ -259,16 +259,17 @@ fn limit<T: PartialOrd + Ord>(val: T, min_limit: T, max_limit: T) -> T {
pub mod mode {
bitflags! {
pub flags TermMode: u16 {
const SHOW_CURSOR = 0b000000001,
const APP_CURSOR = 0b000000010,
const APP_KEYPAD = 0b000000100,
const MOUSE_REPORT_CLICK = 0b000001000,
const BRACKETED_PASTE = 0b000010000,
const SGR_MOUSE = 0b000100000,
const MOUSE_MOTION = 0b001000000,
const LINE_WRAP = 0b010000000,
const LINE_FEED_NEW_LINE = 0b100000000,
const ANY = 0b111111111,
const SHOW_CURSOR = 0b0000000001,
const APP_CURSOR = 0b0000000010,
const APP_KEYPAD = 0b0000000100,
const MOUSE_REPORT_CLICK = 0b0000001000,
const BRACKETED_PASTE = 0b0000010000,
const SGR_MOUSE = 0b0000100000,
const MOUSE_MOTION = 0b0001000000,
const LINE_WRAP = 0b0010000000,
const LINE_FEED_NEW_LINE = 0b0100000000,
const ORIGIN = 0b1000000000,
const ANY = 0b1111111111,
const NONE = 0,
}
}
@ -1037,6 +1038,9 @@ impl ansi::Handler for Term {
/// A character to be displayed
#[inline]
fn input(&mut self, c: char) {
// The character is printed in yellow to differentiate from
// other logs.
print!("{}", ::util::fmt::Yellow(c));
if self.input_needs_wrap {
if !self.mode.contains(mode::LINE_WRAP) {
return;
@ -1116,7 +1120,13 @@ impl ansi::Handler for Term {
#[inline]
fn goto(&mut self, line: Line, col: Column) {
trace!("goto: line={}, col={}", line, col);
self.cursor.point.line = min(line, self.grid.num_lines() - 1);
let (y_offset, max_y) = if self.mode.contains(mode::ORIGIN) {
(self.scroll_region.start, self.scroll_region.end)
} else {
(Line(0), self.grid.num_lines() - 1)
};
self.cursor.point.line = min(line + y_offset, max_y);
self.cursor.point.col = min(col, self.grid.num_cols() - 1);
self.input_needs_wrap = false;
}
@ -1124,15 +1134,15 @@ impl ansi::Handler for Term {
#[inline]
fn goto_line(&mut self, line: Line) {
trace!("goto_line: {}", line);
self.cursor.point.line = min(line, self.grid.num_lines() - 1);
self.input_needs_wrap = false;
let col = self.cursor.point.col; // borrowck
self.goto(line, col)
}
#[inline]
fn goto_col(&mut self, col: Column) {
trace!("goto_col: {}", col);
self.cursor.point.col = min(col, self.grid.num_cols() - 1);
self.input_needs_wrap = false;
let line = self.cursor.point.line; // borrowck
self.goto(line, col)
}
#[inline]
@ -1166,14 +1176,17 @@ impl ansi::Handler for Term {
#[inline]
fn move_up(&mut self, lines: Line) {
trace!("move_up: {}", lines);
let lines = min(self.cursor.point.line, lines);
self.cursor.point.line = min(self.cursor.point.line - lines, self.grid.num_lines() -1);
let move_to = Line(self.cursor.point.line.0.saturating_sub(lines.0));
let col = self.cursor.point.col; // borrowck
self.goto(move_to, col)
}
#[inline]
fn move_down(&mut self, lines: Line) {
trace!("move_down: {}", lines);
self.cursor.point.line = min(self.cursor.point.line + lines, self.grid.num_lines() - 1);
let move_to = self.cursor.point.line + lines;
let col = self.cursor.point.col; // borrowck
self.goto(move_to, col)
}
#[inline]
@ -1558,6 +1571,7 @@ impl ansi::Handler for Term {
ansi::Mode::SgrMouse => self.mode.insert(mode::SGR_MOUSE),
ansi::Mode::LineWrap => self.mode.insert(mode::LINE_WRAP),
ansi::Mode::LineFeedNewLine => self.mode.insert(mode::LINE_FEED_NEW_LINE),
ansi::Mode::Origin => self.mode.insert(mode::ORIGIN),
_ => {
debug!(".. ignoring set_mode");
}
@ -1581,6 +1595,7 @@ impl ansi::Handler for Term {
ansi::Mode::SgrMouse => self.mode.remove(mode::SGR_MOUSE),
ansi::Mode::LineWrap => self.mode.remove(mode::LINE_WRAP),
ansi::Mode::LineFeedNewLine => self.mode.remove(mode::LINE_FEED_NEW_LINE),
ansi::Mode::Origin => self.mode.remove(mode::ORIGIN),
_ => {
debug!(".. ignoring unset_mode");
}