99 lines
2.5 KiB
Rust
99 lines
2.5 KiB
Rust
use crate::mem::{
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heap_clone, heap_drop, heap_move_nonnull, heap_move_ok, heap_remove,
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};
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use servicepoint::{BitmapCommand, CharGrid, CharGridCommand, Origin, Packet};
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use std::ptr::NonNull;
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/// Show UTF-8 encoded text on the screen.
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///
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/// The passed [CharGrid] gets consumed.
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///
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/// Returns: a new [CharGridCommand] instance.
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#[no_mangle]
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pub unsafe extern "C" fn sp_cmd_char_grid_new(
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grid: NonNull<CharGrid>,
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origin_x: usize,
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origin_y: usize,
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) -> NonNull<CharGridCommand> {
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heap_move_nonnull(CharGridCommand {
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grid: unsafe { heap_remove(grid) },
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origin: Origin::new(origin_x, origin_y),
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})
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}
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/// Moves the provided [CharGrid] into a new [CharGridCommand],
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/// leaving other fields as their default values.
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#[no_mangle]
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pub unsafe extern "C" fn sp_cmd_char_grid_from_grid(
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grid: NonNull<CharGrid>,
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) -> NonNull<CharGridCommand> {
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heap_move_nonnull(unsafe { heap_remove(grid) }.into())
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}
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#[no_mangle]
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pub unsafe extern "C" fn sp_cmd_char_grid_into_packet(
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command: NonNull<CharGridCommand>,
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) -> *mut Packet {
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heap_move_ok(unsafe { heap_remove(command) }.try_into())
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}
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/// Clones an [CharGridCommand] instance.
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///
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/// returns: a new [CharGridCommand] instance.
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#[no_mangle]
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pub unsafe extern "C" fn sp_cmd_char_grid_clone(
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command: NonNull<CharGridCommand>,
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) -> NonNull<CharGridCommand> {
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unsafe { heap_clone(command) }
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}
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/// Deallocates a [BitmapCommand].
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#[no_mangle]
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pub unsafe extern "C" fn sp_cmd_char_grid_free(
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command: NonNull<BitmapCommand>,
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) {
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unsafe { heap_drop(command) }
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}
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/// Moves the provided bitmap to be contained in the command.
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#[no_mangle]
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pub unsafe extern "C" fn sp_cmd_char_grid_set(
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mut command: NonNull<CharGridCommand>,
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grid: NonNull<CharGrid>,
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) {
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unsafe {
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command.as_mut().grid = heap_remove(grid);
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}
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}
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#[no_mangle]
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pub unsafe extern "C" fn sp_cmd_char_grid_get(
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mut command: NonNull<CharGridCommand>,
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) -> *mut CharGrid {
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&mut unsafe { command.as_mut() }.grid
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}
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#[no_mangle]
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pub unsafe extern "C" fn sp_cmd_char_grid_get_origin(
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command: NonNull<CharGridCommand>,
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origin_x: NonNull<usize>,
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origin_y: NonNull<usize>,
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) {
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unsafe {
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let origin = &command.as_ref().origin;
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*origin_x.as_ptr() = origin.x;
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*origin_y.as_ptr() = origin.y;
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}
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}
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#[no_mangle]
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pub unsafe extern "C" fn sp_cmd_char_grid_set_origin(
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mut command: NonNull<CharGridCommand>,
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origin_x: usize,
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origin_y: usize,
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) {
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unsafe {
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command.as_mut().origin = Origin::new(origin_x, origin_y);
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}
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}
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