tabled/features/
alignment.rs

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
//! This module contains an [`Alignment`] setting for cells on the [`Table`].
//!
//! An alignment strategy can be set by [`AlignmentStrategy`].
//!
//! # Example
//!
//! ```
//! use tabled::{
//!     formatting::AlignmentStrategy,
//!     object::Segment,
//!     Alignment, Modify, Style, Table,
//! };
//!
//! let data = [
//!     ["1", "2", "3"],
//!     ["Some\nMulti\nLine\nText", "and a line", "here"],
//!     ["4", "5", "6"],
//! ];
//!
//! let mut table = Table::new(&data);
//! table.with(Style::modern())
//!      .with(
//!         Modify::new(Segment::all())
//!             .with(Alignment::right())
//!             .with(Alignment::center())
//!             .with(AlignmentStrategy::PerCell)
//!     );
//!
//! assert_eq!(
//!     table.to_string(),
//!     concat!(
//!         "┌───────┬────────────┬──────┐\n",
//!         "│   0   │     1      │  2   │\n",
//!         "├───────┼────────────┼──────┤\n",
//!         "│   1   │     2      │  3   │\n",
//!         "├───────┼────────────┼──────┤\n",
//!         "│ Some  │ and a line │ here │\n",
//!         "│ Multi │            │      │\n",
//!         "│ Line  │            │      │\n",
//!         "│ Text  │            │      │\n",
//!         "├───────┼────────────┼──────┤\n",
//!         "│   4   │     5      │  6   │\n",
//!         "└───────┴────────────┴──────┘",
//!     ),
//! )
//! ```
//!
//! [`Table`]: crate::Table
//! [`AlignmentStrategy`]: crate::formatting::AlignmentStrategy

use papergrid::Entity;

use crate::{CellOption, Table, TableOption};

pub use papergrid::{AlignmentHorizontal, AlignmentVertical};

/// Alignment represent a horizontal and vertical alignment setting for any cell on a [`Table`].
///
/// ```rust,no_run
/// # use tabled::{Alignment, Modify, object::Rows, Table};
/// # let data: Vec<&'static str> = Vec::new();
/// let mut table = Table::new(&data);
/// table.with(Modify::new(Rows::single(0)).with(Alignment::center()));
/// ```
///
/// [`Table`]: crate::Table
#[derive(Debug, Clone)]
pub enum Alignment {
    /// A horizontal alignment.
    Horizontal(AlignmentHorizontal),
    /// A vertical alignment.
    Vertical(AlignmentVertical),
}

impl Alignment {
    /// Left constructs a horizontal alignment to [`AlignmentHorizontal::Left`]
    pub fn left() -> Self {
        Self::horizontal(AlignmentHorizontal::Left)
    }

    /// Right constructs a horizontal alignment to [`AlignmentHorizontal::Right`]
    ///
    /// ## Notice
    ///
    /// When you use [`MinWidth`] the alignment might not work as you expected.
    /// You could try to apply [`TrimStrategy`] which may help.
    ///
    /// [`MinWidth`]: crate::width::MinWidth
    /// [`TrimStrategy`]: crate::formatting::TrimStrategy
    pub fn right() -> Self {
        Self::horizontal(AlignmentHorizontal::Right)
    }

    /// Center constructs a horizontal alignment to [`AlignmentHorizontal::Center`]
    ///
    /// ## Notice
    ///
    /// When you use [`MinWidth`] the alignment might not work as you expected.
    /// You could try to apply [`TrimStrategy`] which may help.
    ///
    /// [`MinWidth`]: crate::width::MinWidth
    /// [`TrimStrategy`]: crate::formatting::TrimStrategy
    pub fn center() -> Self {
        Self::horizontal(AlignmentHorizontal::Center)
    }

    /// Top constructs a vertical alignment to [`AlignmentVertical::Top`]
    pub fn top() -> Self {
        Self::vertical(AlignmentVertical::Top)
    }

    /// Bottom constructs a vertical alignment to [`AlignmentVertical::Bottom`]
    pub fn bottom() -> Self {
        Self::vertical(AlignmentVertical::Bottom)
    }

    /// `Center_vertical` constructs a vertical alignment to [`AlignmentVertical::Center`]
    pub fn center_vertical() -> Self {
        Self::vertical(AlignmentVertical::Center)
    }

    /// Returns an alignment with the given horizontal alignment.
    fn horizontal(alignment: AlignmentHorizontal) -> Self {
        Self::Horizontal(alignment)
    }

    /// Returns an alignment with the given vertical alignment.
    fn vertical(alignment: AlignmentVertical) -> Self {
        Self::Vertical(alignment)
    }
}

impl<R> CellOption<R> for Alignment {
    fn change_cell(&mut self, table: &mut Table<R>, entity: Entity) {
        match *self {
            Self::Horizontal(a) => table.get_config_mut().set_alignment_horizontal(entity, a),
            Self::Vertical(a) => table.get_config_mut().set_alignment_vertical(entity, a),
        };
    }
}

impl<R> TableOption<R> for Alignment {
    fn change(&mut self, table: &mut Table<R>) {
        let cfg = table.get_config_mut();
        match self {
            Alignment::Horizontal(a) => cfg.set_alignment_horizontal(Entity::Global, *a),
            Alignment::Vertical(a) => cfg.set_alignment_vertical(Entity::Global, *a),
        }
    }
}