109 lines
2.8 KiB
Rust
109 lines
2.8 KiB
Rust
use crate::{
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containers::ByteSlice,
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macros::{wrap_clone, wrap_free, wrap_methods},
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mem::{heap_move_nonnull, heap_move_ok, heap_remove},
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};
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use servicepoint::{CharGrid, CharGridCommand, Grid, Origin, Packet};
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use std::ptr::NonNull;
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/// Creates a new [CharGrid] with the specified dimensions.
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///
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/// returns: [CharGrid] initialized to 0.
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///
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/// # Examples
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///
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/// ```C
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/// CharGrid grid = sp_char_grid_new(4, 3);
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/// sp_char_grid_fill(grid, '?');
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/// sp_char_grid_set(grid, 0, 0, '!');
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/// sp_char_grid_free(grid);
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/// ```
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#[no_mangle]
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pub unsafe extern "C" fn sp_char_grid_new(
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width: usize,
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height: usize,
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) -> NonNull<CharGrid> {
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heap_move_nonnull(CharGrid::new(width, height))
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}
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/// Loads a [CharGrid] with the specified dimensions from the provided data.
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///
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/// returns: new CharGrid or NULL in case of an error
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#[no_mangle]
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pub unsafe extern "C" fn sp_char_grid_load(
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width: usize,
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height: usize,
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data: ByteSlice,
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) -> *mut CharGrid {
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let data = unsafe { data.as_slice() };
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heap_move_ok(CharGrid::load_utf8(width, height, data.to_vec()))
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}
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wrap_clone!(sp_char_grid::CharGrid);
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wrap_free!(sp_char_grid::CharGrid);
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wrap_methods!(
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sp_char_grid::CharGrid;
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/// Returns the current value at the specified position.
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///
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/// # Arguments
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///
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/// - `x` and `y`: position of the cell to read
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///
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/// # Panics
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///
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/// - when accessing `x` or `y` out of bounds
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ref fn get(x: usize, y: usize) -> u32;
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| char | char as u32;
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/// Sets the value of the specified position in the grid.
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///
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/// # Arguments
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///
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/// - `x` and `y`: position of the cell
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/// - `value`: the value to write to the cell
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///
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/// returns: old value of the cell
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///
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/// # Panics
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///
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/// - when accessing `x` or `y` out of bounds
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/// - when providing values that cannot be converted to Rust's `char`.
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mut fn set(x: usize, y: usize, value: u32);
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let value = char::from_u32(value).unwrap();
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/// Sets the value of all cells in the grid.
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///
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/// # Arguments
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///
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/// - `value`: the value to set all cells to
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/// - when providing values that cannot be converted to Rust's `char`.
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mut fn fill(value: u32);
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let value = char::from_u32(value).unwrap();
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/// Gets the width of the grid.
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ref fn width() -> usize;
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/// Gets the height of the grid.
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ref fn height() -> usize;
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);
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/// Creates a [CharGridCommand] and immediately turns that into a [Packet].
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///
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/// The provided [CharGrid] gets consumed.
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///
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/// Returns NULL in case of an error.
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#[no_mangle]
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pub unsafe extern "C" fn sp_char_grid_into_packet(
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grid: NonNull<CharGrid>,
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x: usize,
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y: usize,
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) -> *mut Packet {
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let grid = unsafe { heap_remove(grid) };
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heap_move_ok(Packet::try_from(CharGridCommand {
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grid,
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origin: Origin::new(x, y),
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}))
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}
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