1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
|
// Copyright 2016 Joe Wilm, The Alacritty Project Contributors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
use ansi::{NamedColor, Color};
use grid;
use index::Column;
bitflags! {
#[derive(Serialize, Deserialize)]
pub struct Flags: u32 {
const INVERSE = 0b0_0000_0001;
const BOLD = 0b0_0000_0010;
const ITALIC = 0b0_0000_0100;
const UNDERLINE = 0b0_0000_1000;
const WRAPLINE = 0b0_0001_0000;
const WIDE_CHAR = 0b0_0010_0000;
const WIDE_CHAR_SPACER = 0b0_0100_0000;
const DIM = 0b0_1000_0000;
const DIM_BOLD = 0b0_1000_0010;
const HIDDEN = 0b1_0000_0000;
}
}
#[derive(Copy, Clone, Debug, Serialize, Deserialize, Eq, PartialEq)]
pub struct Cell {
pub c: char,
pub fg: Color,
pub bg: Color,
pub flags: Flags,
}
impl Default for Cell {
fn default() -> Cell {
Cell::new(
' ',
Color::Named(NamedColor::Foreground),
Color::Named(NamedColor::Background)
)
}
}
/// Get the length of occupied cells in a line
pub trait LineLength {
/// Calculate the occupied line length
fn line_length(&self) -> Column;
}
impl LineLength for grid::Row<Cell> {
fn line_length(&self) -> Column {
let mut length = Column(0);
if self[Column(self.len() - 1)].flags.contains(Flags::WRAPLINE) {
return Column(self.len());
}
for (index, cell) in self[..].iter().rev().enumerate() {
if cell.c != ' ' {
length = Column(self.len() - index);
break;
}
}
length
}
}
impl Cell {
#[inline]
pub fn bold(&self) -> bool {
self.flags.contains(Flags::BOLD)
}
#[inline]
pub fn inverse(&self) -> bool {
self.flags.contains(Flags::INVERSE)
}
#[inline]
pub fn dim(&self) -> bool {
self.flags.contains(Flags::DIM)
}
pub fn new(c: char, fg: Color, bg: Color) -> Cell {
Cell {
c,
bg,
fg,
flags: Flags::empty(),
}
}
#[inline]
pub fn is_empty(&self) -> bool {
self.c == ' ' &&
self.bg == Color::Named(NamedColor::Background) &&
!self.flags.intersects(Flags::INVERSE | Flags::UNDERLINE)
}
#[inline]
pub fn reset(&mut self, template: &Cell) {
// memcpy template to self
*self = *template;
}
}
#[cfg(test)]
mod tests {
use super::{Cell, LineLength};
use grid::Row;
use index::Column;
#[test]
fn line_length_works() {
let template = Cell::default();
let mut row = Row::new(Column(10), &template);
row[Column(5)].c = 'a';
assert_eq!(row.line_length(), Column(6));
}
#[test]
fn line_length_works_with_wrapline() {
let template = Cell::default();
let mut row = Row::new(Column(10), &template);
row[Column(9)].flags.insert(super::Flags::WRAPLINE);
assert_eq!(row.line_length(), Column(10));
}
}
#[cfg(all(test, feature = "bench"))]
mod benches {
extern crate test;
use super::Cell;
#[bench]
fn cell_reset(b: &mut test::Bencher) {
b.iter(|| {
let mut cell = Cell::default();
for _ in 0..100 {
cell.reset(test::black_box(&Cell::default()));
}
test::black_box(cell);
});
}
}
|
