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use serde::{Deserialize, Serialize};
use std::{fs::File, io::prelude::*, path::PathBuf};
use crate::terminal_pane::PositionAndSize;
fn split_space_to_parts_vertically(
space_to_split: &PositionAndSize,
percentages: Vec<u8>,
) -> Vec<PositionAndSize> {
let mut split_parts = vec![];
let mut current_x_position = space_to_split.x;
let width = space_to_split.columns - (percentages.len() - 1); // minus space for gaps
for percentage in percentages.iter() {
let columns = (width as f32 * (*percentage as f32 / 100.0)) as usize; // TODO: round properly
split_parts.push(PositionAndSize {
x: current_x_position,
y: space_to_split.y,
columns,
rows: space_to_split.rows,
});
current_x_position += columns + 1; // 1 for gap
}
let total_width = split_parts
.iter()
.fold(0, |total_width, part| total_width + part.columns);
if total_width < width {
// we have some extra space left, let's add it to the last part
let last_part_index = split_parts.len() - 1;
let mut last_part = split_parts.get_mut(last_part_index).unwrap();
last_part.columns += width - total_width;
}
split_parts
}
fn split_space_to_parts_horizontally(
space_to_split: &PositionAndSize,
percentages: Vec<u8>,
) -> Vec<PositionAndSize> {
let mut split_parts = vec![];
let mut current_y_position = space_to_split.y;
let height = space_to_split.rows - (percentages.len() - 1); // minus space for gaps
for percentage in percentages.iter() {
let rows = (height as f32 * (*percentage as f32 / 100.0)) as usize; // TODO: round properly
split_parts.push(PositionAndSize {
x: space_to_split.x,
y: current_y_position,
columns: space_to_split.columns,
rows,
});
current_y_position += rows + 1; // 1 for gap
}
let total_height = split_parts
.iter()
.fold(0, |total_height, part| total_height + part.rows);
if total_height < height {
// we have some extra space left, let's add it to the last part
let last_part_index = split_parts.len() - 1;
let mut last_part = split_parts.get_mut(last_part_index).unwrap();
last_part.rows += height - total_height;
}
split_parts
}
fn split_space(space_to_split: &PositionAndSize, layout: &Layout) -> Vec<PositionAndSize> {
let mut pane_positions: Vec<PositionAndSize> = vec![];
let percentages: Vec<u8> = layout
.parts
.iter()
.map(|part| {
let split_size = part.split_size.as_ref();
match split_size {
Some(SplitSize::Percent(percent)) => *percent,
None => {
// TODO: if there is no split size, it should get the remaining "free space"
panic!("Please enter the percentage of the screen part");
}
}
})
.collect();
let split_parts = match layout.direction {
Direction::Vertical => split_space_to_parts_vertically(space_to_split, percentages),
Direction::Horizontal => split_space_to_parts_horizontally(space_to_split, percentages),
};
for (i, part) in layout.parts.iter().enumerate() {
let part_position_and_size = split_parts.get(i).unwrap();
if !part.parts.is_empty() {
let mut part_positions = split_space(&part_position_and_size, part);
pane_positions.append(&mut part_positions);
} else {
pane_positions.push(*part_position_and_size);
}
}
pane_positions
}
fn validate_layout_percentage_total(layout: &Layout) -> bool {
let total_percentages: u8 = layout
.parts
.iter()
.map(|part| {
let split_size = part.split_size.as_ref();
match split_size {
Some(SplitSize::Percent(percent)) => *percent,
None => {
// TODO: if there is no split size, it should get the remaining "free space"
panic!("Please enter the percentage of the screen part");
}
}
})
.sum();
if total_percentages != 100 {
return false;
}
for part in layout.parts.iter() {
if !part.parts.is_empty() {
return validate_layout_percentage_total(part);
}
}
true
}
#[derive(Debug, Serialize, Deserialize, Clone)]
pub enum Direction {
Horizontal,
Vertical,
}
#[derive(Debug, Serialize, Deserialize, Clone)]
pub enum SplitSize {
Percent(u8), // 1 to 100
}
#[derive(Debug, Serialize, Deserialize, Clone)]
pub struct Layout {
pub direction: Direction,
#[serde(default, skip_serializing_if = "Vec::is_empty")]
pub parts: Vec<Layout>,
#[serde(skip_serializing_if = "Option::is_none")]
pub split_size: Option<SplitSize>,
}
impl Layout {
pub fn new(layout_path: PathBuf) -> Self {
let mut layout_file = File::open(&layout_path)
.unwrap_or_else(|_| panic!("cannot find layout {}", &layout_path.display()));
let mut layout = String::new();
layout_file
.read_to_string(&mut layout)
.unwrap_or_else(|_| panic!("could not read layout {}", &layout_path.display()));
let layout: Layout = serde_yaml::from_str(&layout)
.unwrap_or_else(|_| panic!("could not parse layout {}", &layout_path.display()));
layout.validate();
layout
}
pub fn validate(&self) {
if !validate_layout_percentage_total(&self) {
panic!("The total percent for each part should equal 100.");
}
}
pub fn total_panes(&self) -> usize {
let mut total_panes = 0;
total_panes += self.parts.len();
for part in self.parts.iter() {
total_panes += part.total_panes();
}
total_panes
}
pub fn position_panes_in_space(&self, space: &PositionAndSize) -> Vec<PositionAndSize> {
split_space(space, &self)
}
}
|
