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Add color convertion methods #167

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merged 1 commit into from
Oct 6, 2023
Merged

Add color convertion methods #167

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2 changes: 1 addition & 1 deletion api/color/Cargo.toml
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Original file line number Diff line number Diff line change
@@ -1,6 +1,6 @@
[package]
name = "playdate-color"
version = "0.2.1"
version = "0.2.2"
readme = "README.md"
description = "Color extension for Playdate API"
keywords = ["playdate", "sdk", "api", "gamedev"]
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28 changes: 28 additions & 0 deletions api/color/src/lib.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -3,6 +3,10 @@
#![feature(impl_trait_in_assoc_type)]

extern crate sys;
use core::ptr::NonNull;
use core::usize;

use sys::error::NullPtrError;
use sys::ffi::LCDColor;
use sys::ffi::LCDPattern;
use sys::ffi::LCDSolidColor;
Expand Down Expand Up @@ -34,6 +38,30 @@ impl<'t> From<Color<'t>> for LCDColor
}
}

impl<'t> TryFrom<LCDColor> for Color<'t>
where LCDColor: 't,
Self: 't
{
type Error = NullPtrError;

fn try_from(color: LCDColor) -> Result<Self, Self::Error> {
match color {
0 => Ok(Self::Solid(LCDSolidColor::Black())),
1 => Ok(Self::Solid(LCDSolidColor::White())),
2 => Ok(Self::Solid(LCDSolidColor::Clear())),
3 => Ok(Self::Solid(LCDSolidColor::XOR())),
color => {
NonNull::new(color as *mut LCDPattern).ok_or(NullPtrError)
.map(|nn| Self::Pattern(unsafe { nn.as_ref() }))
},
}
}
}

impl<'t> From<&'t LCDPattern> for Color<'t> {
fn from(pattern: &'t LCDPattern) -> Self { Color::Pattern(pattern) }
}


#[const_trait]
pub trait LCDColorExt {
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