bendn's repos / fimg
fast image operations
Diffstat (limited to 'src/builder.rs')
-rw-r--r--src/builder.rs98
1 files changed, 0 insertions, 98 deletions
diff --git a/src/builder.rs b/src/builder.rs
deleted file mode 100644
index be5a837..0000000
--- a/src/builder.rs
+++ /dev/null
@@ -1,98 +0,0 @@
-//! safe builder for the image
-//!
-//! does not let you do funny things
-use std::marker::PhantomData;
-
-use crate::Image;
-
-impl<B: buf::Buffer, const C: usize> Image<B, C> {
- /// creates a builder
- pub const fn build(w: u32, h: u32) -> Builder<B, C> {
- Builder::new(w, h)
- }
-}
-
-/// Safe [Image] builder.
-pub struct Builder<B, const C: usize> {
- /// the width in a zeroable type. zeroable so as to make the check in [`buf`] easier.
- width: u32,
- /// the height in a zeroable type.
- height: u32,
- #[allow(clippy::missing_docs_in_private_items)]
- _buffer: PhantomData<B>,
-}
-impl<B: buf::Buffer, const C: usize> Builder<B, C> {
- /// create new builder
- pub const fn new(w: u32, h: u32) -> Self {
- Self {
- width: w,
- height: h,
- _buffer: PhantomData,
- }
- }
-
- /// apply a buffer, and build
- #[track_caller]
- pub fn buf(self, buffer: B) -> Image<B, C> {
- let len = C as u32 * self.width * self.height;
- assert!(
- buffer.len() as u32 == len,
- "invalid buffer size (expected {len}, got {})",
- buffer.len()
- );
- Image {
- buffer,
- width: self.width.try_into().expect("passed zero width to builder"),
- height: self
- .height
- .try_into()
- .expect("passed zero height to builder"),
- }
- }
-}
-
-impl<const C: usize> Builder<Vec<u8>, C> {
- /// allocate this image
- pub fn alloc(self) -> Image<Vec<u8>, C> {
- Image::alloc(self.width, self.height)
- }
-}
-
-/// seals the [`Buffer`] trait
-mod buf {
- /// A valid buffer for use in the builder
- pub trait Buffer {
- #[doc(hidden)]
- fn len(&self) -> usize;
- }
- impl<T> Buffer for Vec<T> {
- fn len(&self) -> usize {
- self.len()
- }
- }
- impl<T> Buffer for &[T] {
- fn len(&self) -> usize {
- <[T]>::len(self)
- }
- }
- impl<T> Buffer for &mut [T] {
- fn len(&self) -> usize {
- <[T]>::len(self)
- }
- }
- impl<T, const N: usize> Buffer for [T; N] {
- fn len(&self) -> usize {
- N
- }
- }
- impl<T, const N: usize> Buffer for &[T; N] {
- fn len(&self) -> usize {
- N
- }
- }
- impl<T, const N: usize> Buffer for &mut [T; N] {
- fn len(&self) -> usize {
- N
- }
- }
-}