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|
use serde::{Deserialize, Serialize};
use crate::position::Position;
/// Contains the position and size of a [`Pane`], or more generally of any terminal, measured
/// in character rows and columns.
#[derive(Clone, Copy, Default, PartialEq, Debug, Serialize, Deserialize, Eq)]
pub struct PaneGeom {
pub x: usize,
pub y: usize,
pub rows: Dimension,
pub cols: Dimension,
}
#[derive(Clone, Copy, Debug, Default, Serialize, Deserialize, PartialEq, Eq)]
pub struct Viewport {
pub x: usize,
pub y: usize,
pub rows: usize,
pub cols: usize,
}
#[derive(Clone, Copy, Debug, Default, Serialize, Deserialize, PartialEq, Eq)]
pub struct Offset {
pub top: usize,
pub bottom: usize,
pub right: usize,
pub left: usize,
}
#[derive(Clone, Copy, Default, PartialEq, Debug, Serialize, Deserialize)]
pub struct Size {
pub rows: usize,
pub cols: usize,
}
#[derive(Clone, Copy, Default, PartialEq, Eq, Debug, Serialize, Deserialize)]
pub struct SizeInPixels {
pub height: usize,
pub width: usize,
}
#[derive(Eq, Clone, Copy, PartialEq, Debug, Serialize, Deserialize)]
pub struct Dimension {
pub constraint: Constraint,
inner: usize,
}
impl Default for Dimension {
fn default() -> Self {
Self::percent(100.0)
}
}
impl Dimension {
pub fn fixed(size: usize) -> Dimension {
Self {
constraint: Constraint::Fixed(size),
inner: size,
}
}
pub fn percent(percent: f64) -> Dimension {
Self {
constraint: Constraint::Percent(percent),
inner: 1,
}
}
pub fn as_usize(&self) -> usize {
self.inner
}
pub fn as_percent(&self) -> Option<f64> {
if let Constraint::Percent(p) = self.constraint {
Some(p)
} else {
None
}
}
pub fn set_percent(&mut self, percent: f64) {
self.constraint = Constraint::Percent(percent);
}
pub fn set_inner(&mut self, inner: usize) {
self.inner = inner;
}
pub fn adjust_inner(&mut self, full_size: usize) -> f64 {
// returns the leftover from
// rounding if any
// TODO: elsewhere?
match self.constraint {
Constraint::Percent(percent) => {
let new_inner = (percent / 100.0) * full_size as f64;
let rounded = new_inner.floor();
let leftover = rounded - new_inner;
self.set_inner(rounded as usize);
leftover
// self.set_inner(((percent / 100.0) * full_size as f64).round() as usize);
},
Constraint::Fixed(fixed_size) => {
self.set_inner(fixed_size);
0.0
},
}
}
pub fn increase_inner(&mut self, by: usize) {
self.inner += by;
}
pub fn is_fixed(&self) -> bool {
matches!(self.constraint, Constraint::Fixed(_))
}
}
#[derive(Clone, Copy, PartialEq, Debug, Serialize, Deserialize)]
pub enum Constraint {
/// Constrains the dimension to a fixed, integer number of rows / columns
Fixed(usize),
/// Constrains the dimension to a flexible percent size of the total screen
Percent(f64),
}
impl Eq for Constraint {}
impl PaneGeom {
pub fn contains(&self, point: &Position) -> bool {
let col = point.column.0 as usize;
let row = point.line.0 as usize;
self.x <= col
&& col < self.x + self.cols.as_usize()
&& self.y <= row
&& row < self.y + self.rows.as_usize()
}
pub fn is_at_least_minimum_size(&self) -> bool {
self.rows.as_usize() > 0 && self.cols.as_usize() > 0
}
}
impl Offset {
pub fn frame(size: usize) -> Self {
Self {
top: size,
bottom: size,
right: size,
left: size,
}
}
// FIXME: This should be top and left, not bottom and right, but `boundaries.rs` would need
// some changing
pub fn shift(bottom: usize, right: usize) -> Self {
Self {
bottom,
right,
..Default::default()
}
}
}
impl From<PaneGeom> for Viewport {
fn from(pane: PaneGeom) -> Self {
Self {
x: pane.x,
y: pane.y,
rows: pane.rows.as_usize(),
cols: pane.cols.as_usize(),
}
}
}
impl From<Size> for Viewport {
fn from(size: Size) -> Self {
Self {
rows: size.rows,
cols: size.cols,
..Default::default()
}
}
}
impl From<&PaneGeom> for Size {
fn from(pane_geom: &PaneGeom) -> Self {
Self {
rows: pane_geom.rows.as_usize(),
cols: pane_geom.cols.as_usize(),
}
}
}
|
