tabled/features/
padding.rs

1//! This module contains a [`Padding`] setting of a cell on a [`Table`].
2//!
3//! # Example
4//!
5//! ```
6//! use tabled::{TableIteratorExt, Padding, Style, Modify, object::Cell};
7//!
8//! let data = "2022".chars();
9//!
10//! let table = data.table()
11//!     .with(Style::modern())
12//!     .with(Modify::new(Cell(2, 0)).with(Padding::new(1, 1, 2, 2)))
13//!     .to_string();
14//!
15//! assert_eq!(
16//!     table,
17//!     concat!(
18//!         "┌──────┐\n",
19//!         "│ char │\n",
20//!         "├──────┤\n",
21//!         "│ 2    │\n",
22//!         "├──────┤\n",
23//!         "│      │\n",
24//!         "│      │\n",
25//!         "│ 0    │\n",
26//!         "│      │\n",
27//!         "│      │\n",
28//!         "├──────┤\n",
29//!         "│ 2    │\n",
30//!         "├──────┤\n",
31//!         "│ 2    │\n",
32//!         "└──────┘",
33//!     ),
34//! );
35//! ```
36//!
37//! [`Table`]: crate::Table
38
39use papergrid::{Entity, Indent};
40
41use crate::{
42    table::{CellOption, Table},
43    TableOption,
44};
45
46// #[cfg(feature = "color")]
47// use crate::style::Color;
48
49/// Padding is responsible for a left/right/top/bottom inner indent of a particular cell.
50///
51/// ```rust,no_run
52/// # use tabled::{Style, Padding, object::Rows, Table, Modify};
53/// # let data: Vec<&'static str> = Vec::new();
54/// let table = Table::new(&data).with(Modify::new(Rows::single(0)).with(Padding::new(0, 0, 1, 1).set_fill('>', '<', '^', 'V')));
55/// ```
56#[derive(Debug)]
57pub struct Padding(papergrid::Padding);
58
59impl Padding {
60    /// Construct's an Padding object.
61    ///
62    /// It uses space(' ') as a default fill character.
63    /// To set a custom character you can use [`Self::set_fill`] function.
64    pub fn new(left: usize, right: usize, top: usize, bottom: usize) -> Self {
65        Self(papergrid::Padding {
66            top: Indent::spaced(top),
67            bottom: Indent::spaced(bottom),
68            left: Indent::spaced(left),
69            right: Indent::spaced(right),
70        })
71    }
72
73    /// Construct's an Padding object with all sides set to 0.
74    ///
75    /// It uses space(' ') as a default fill character.
76    /// To set a custom character you can use [`Self::set_fill`] function.
77    pub fn zero() -> Self {
78        let indent = Indent::spaced(0);
79        Self(papergrid::Padding {
80            top: indent,
81            bottom: indent,
82            left: indent,
83            right: indent,
84        })
85    }
86
87    /// The function, sets a characters for the padding on an each side.
88    pub fn set_fill(mut self, left: char, right: char, top: char, bottom: char) -> Self {
89        self.0.left.fill = left;
90        self.0.right.fill = right;
91        self.0.top.fill = top;
92        self.0.bottom.fill = bottom;
93        self
94    }
95}
96
97impl<R> CellOption<R> for Padding {
98    fn change_cell(&mut self, table: &mut Table<R>, entity: Entity) {
99        table.get_config_mut().set_padding(entity, self.0);
100        table.destroy_width_cache();
101    }
102}
103
104impl<R> TableOption<R> for Padding {
105    fn change(&mut self, table: &mut Table<R>) {
106        table.get_config_mut().set_padding(Entity::Global, self.0);
107        table.destroy_width_cache();
108    }
109}