68 lines
1.9 KiB
Rust
68 lines
1.9 KiB
Rust
/*
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* meli
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*
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* Copyright 2017-2018 Manos Pitsidianakis
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*
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* This file is part of meli.
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*
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* meli is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* meli is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with meli. If not, see <http://www.gnu.org/licenses/>.
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*/
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//! Simple type definitions and macro helper for a `(x, y)` position on the
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//! terminal and the areas they define. An [`Area`] consists of two points: the
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//! upper left and bottom right corners.
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/// A `(x, y)` position on screen.
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pub type Pos = (usize, usize);
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#[inline(always)]
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pub fn get_x(p: Pos) -> usize {
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p.0
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}
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#[inline(always)]
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pub fn get_y(p: Pos) -> usize {
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p.1
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}
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#[inline(always)]
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pub fn set_x(p: Pos, new_x: usize) -> Pos {
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(new_x, p.1)
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}
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#[inline(always)]
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pub fn set_y(p: Pos, new_y: usize) -> Pos {
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(p.0, new_y)
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}
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#[inline(always)]
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pub fn pos_inc(p: Pos, inc: (usize, usize)) -> Pos {
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(p.0 + inc.0, p.1 + inc.1)
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}
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#[inline(always)]
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pub fn pos_dec(p: Pos, dec: (usize, usize)) -> Pos {
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(p.0.saturating_sub(dec.0), p.1.saturating_sub(dec.1))
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}
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#[derive(Debug, Copy, Clone, PartialEq, Eq, Default)]
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pub enum Alignment {
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/// Stretch to fill all space if possible, center if no meaningful way to
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/// stretch.
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Fill,
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/// Snap to left or top side, leaving space on right or bottom.
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Start,
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/// Snap to right or bottom side, leaving space on left or top.
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End,
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/// Center natural width of widget inside the allocation.
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#[default]
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Center,
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}
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