bendns' repos / fimg
fast image operations
Diffstat (limited to 'src/drawing/text.rs')
-rw-r--r--src/drawing/text.rs106
1 files changed, 0 insertions, 106 deletions
diff --git a/src/drawing/text.rs b/src/drawing/text.rs
deleted file mode 100644
index 00a2d65..0000000
--- a/src/drawing/text.rs
+++ /dev/null
@@ -1,106 +0,0 @@
-//! text raster
-
-use crate::{
- Image, Pack,
- pixels::{Wam, float},
-};
-use fontdue::{Font, layout::TextStyle};
-use umath::{FF32, generic_float::Constructors};
-
-/// note: `N` may != channels
-pub trait Text<const N: usize> {
- fn text(&mut self, x: u32, y: u32, size: f32, font: &Font, text: &str, color: [u8; N]);
-}
-
-impl<T: AsMut<[u32]> + AsRef<[u32]>> Text<4> for Image<T, 1> {
- fn text(&mut self, x: u32, y: u32, size: f32, font: &Font, text: &str, color: [u8; 4]) {
- let mut lay =
- fontdue::layout::Layout::new(fontdue::layout::CoordinateSystem::PositiveYDown);
- lay.append(&[font], &TextStyle::new(text, size, 0));
- for glpyh in lay.glyphs() {
- let (metrics, bitmap) = font.rasterize(glpyh.parent, size);
- for i in 0..metrics.width {
- for j in 0..metrics.height {
- let x = x + i as u32 + glpyh.x as u32;
- if x >= self.width() {
- continue;
- }
- let y = y + j as u32 + glpyh.y as u32;
- if y >= self.height() {
- continue;
- }
-
- // SAFETY: the rasterizer kinda promises that metrics width and height are in bounds
- let fill = unsafe { float(*bitmap.get_unchecked(j * metrics.width + i)) };
- // SAFETY: we clampin
- let bg: [u8; 4] = unsafe { Pack::unpack(self.pixel(x, y)[0]) };
- // SAFETY: see above
- *(&mut unsafe { self.pixel_mut(x, y) }[0]) =
- // SAFETY: fill is 0..=1
- Pack::pack(& bg.wam(color, 1.0 - fill, fill));
- }
- }
- }
- }
-}
-
-impl<const N: usize, T: AsMut<[u8]> + AsRef<[u8]>> Text<N> for Image<T, N> {
- fn text(&mut self, x: u32, y: u32, size: f32, font: &Font, text: &str, color: [u8; N]) {
- let mut lay =
- fontdue::layout::Layout::new(fontdue::layout::CoordinateSystem::PositiveYDown);
- lay.append(&[font], &TextStyle::new(text, size, 0));
- for glpyh in lay.glyphs() {
- let (metrics, bitmap) = font.rasterize(glpyh.parent, size);
- for i in 0..metrics.width {
- for j in 0..metrics.height {
- let x = x + i as u32 + glpyh.x as u32;
- if x >= self.width() {
- continue;
- }
- let y = y + j as u32 + glpyh.y as u32;
- if y >= self.height() {
- continue;
- }
-
- // SAFETY: the rasterizer kinda promises that metrics width and height are in bounds
- let fill = unsafe { float(*bitmap.get_unchecked(j * metrics.width + i)) };
- // SAFETY: we clampin
- let bg = unsafe { &mut *(self.pixel_mut(x, y).as_mut_ptr() as *mut [u8; N]) };
- // SAFETY: fill is 0..=1
- *bg = unsafe { bg.wam(color, *(FF32::one() - fill), fill) };
- }
- }
- }
- }
-}
-
-impl<const N: usize, T> Image<T, N> {
- /// Draw text.
- ///
- /// ```
- /// # use fimg::Image;
- /// let font = fontdue::Font::from_bytes(
- /// &include_bytes!("../../data/CascadiaCode.ttf")[..],
- /// fontdue::FontSettings {
- /// scale: 200.0,
- /// ..Default::default()
- /// },
- /// ).unwrap();
- /// let mut i: Image<_, 4> = Image::alloc(750, 250).boxed();
- /// i.text(50, 10, 200.0, &font, "hello", [0, 0, 0, 255]);
- /// # assert_eq!(&**i.buffer(), include_bytes!("../../tdata/text.imgbuf"));
- /// ```
- pub fn text<const P: usize>(
- &mut self,
- x: u32,
- y: u32,
- size: f32,
- font: &Font,
- text: &str,
- color: [u8; P],
- ) where
- Image<T, N>: Text<P>,
- {
- Text::text(self, x, y, size, font, text, color)
- }
-}