Typstify /cells endpoint

showbits-thermal-printer/src/documents.rs

@@ -1,5 +1,6 @@
 use showbits_typst::Typst;
 
+pub mod cells;
 pub mod egg;
 pub mod image;
 pub mod text;

showbits-thermal-printer/src/documents/cells/data.json

@@ -0,0 +1,3 @@
+{
+  "feed": true
+}

showbits-thermal-printer/src/documents/cells/lib

@@ -0,0 +1 @@
+../lib

showbits-thermal-printer/src/documents/cells/main.typ

@@ -0,0 +1,10 @@
+#import "lib/main.typ" as lib;
+#show: it => lib.init(it)
+
+#let data = json("data.json")
+
+#image("image.png")
+
+#if data.feed {
+  lib.feed
+}

showbits-thermal-printer/src/documents/cells/mod.rs

@@ -0,0 +1,110 @@
+use std::io::Cursor;
+
+use anyhow::Context;
+use axum::{Form, extract::State};
+use image::{ImageFormat, Rgba, RgbaImage, imageops};
+use serde::{Deserialize, Serialize};
+
+use crate::{
+    drawer::{Command, NewTypstDrawing},
+    printer::Printer,
+    server::{Server, somehow},
+};
+
+const BLACK: Rgba<u8> = Rgba([0, 0, 0, 255]);
+const WHITE: Rgba<u8> = Rgba([255, 255, 255, 255]);
+
+fn b2c(bool: bool) -> Rgba<u8> {
+    match bool {
+        true => BLACK,
+        false => WHITE,
+    }
+}
+
+fn c2b(color: Rgba<u8>) -> bool {
+    color == BLACK
+}
+
+fn neighbors_at(image: &RgbaImage, x: u32, y: u32) -> [bool; 3] {
+    let left = x
+        .checked_sub(1)
+        .map(|x| *image.get_pixel(x, y))
+        .unwrap_or(WHITE);
+
+    let mid = *image.get_pixel(x, y);
+
+    let right = image.get_pixel_checked(x + 1, y).copied().unwrap_or(WHITE);
+
+    [c2b(left), c2b(mid), c2b(right)]
+}
+
+fn apply_rule(rule: u8, neighbors: [bool; 3]) -> bool {
+    let [left, mid, right] = neighbors.map(|n| n as u8);
+    let index = (left << 2) | (mid << 1) | right;
+    rule & (1 << index) != 0
+}
+
+#[derive(Serialize)]
+struct Data {
+    feed: bool,
+}
+
+#[derive(Deserialize)]
+pub struct FormData {
+    pub rule: Option<u8>,
+    pub rows: Option<u32>,
+    pub scale: Option<u32>,
+    pub feed: Option<bool>,
+}
+
+pub async fn post(server: State<Server>, Form(form): Form<FormData>) -> somehow::Result<()> {
+    let data = Data {
+        feed: form.feed.unwrap_or(true),
+    };
+
+    let rule = form.rule.unwrap_or_else(rand::random);
+    let scale = form.scale.unwrap_or(4).clamp(1, 16);
+    let rows = form.rows.unwrap_or(128 * 4 / scale).clamp(1, 1024 / scale);
+    let cols = Printer::WIDTH / scale;
+
+    let mut image: image::ImageBuffer<Rgba<u8>, Vec<u8>> = RgbaImage::new(cols, rows);
+
+    // Initialize first line randomly
+    for x in 0..image.width() {
+        image.put_pixel(x, 0, b2c(rand::random()));
+    }
+
+    // Calculate next rows
+    for y in 1..image.height() {
+        for x in 0..image.width() {
+            let neighbors = neighbors_at(&image, x, y - 1);
+            let state = apply_rule(rule, neighbors);
+            image.put_pixel(x, y, b2c(state));
+        }
+    }
+
+    let image = imageops::resize(
+        &image,
+        image.width() * scale,
+        image.height() * scale,
+        imageops::Nearest,
+    );
+
+    let mut bytes: Vec<u8> = Vec::new();
+    image
+        .write_to(&mut Cursor::new(&mut bytes), ImageFormat::Png)
+        .context("failed to encode image as png")
+        .map_err(somehow::Error)?;
+
+    let typst = super::typst_with_lib()
+        .with_json("/data.json", &data)
+        .with_file("/image.png", bytes)
+        .with_main_file(include_str!("main.typ"));
+
+    let _ = server
+        .tx
+        .send(Command::draw(NewTypstDrawing::new(typst)))
+        .await;
+
+    Ok(())
+}

showbits-thermal-printer/src/drawer.rs

@@ -1,6 +1,5 @@
 mod backlog;
 mod calendar;
-mod cells;
 mod chat_message;
 mod new_typst;
 mod photo;
@@ -13,9 +12,9 @@ use tokio::sync::mpsc;
 use crate::persistent_printer::PersistentPrinter;
 
 pub use self::{
-    backlog::BacklogDrawing, calendar::CalendarDrawing, cells::CellsDrawing,
-    chat_message::ChatMessageDrawing, new_typst::NewTypstDrawing, photo::PhotoDrawing,
-    tictactoe::TicTacToeDrawing, typst::TypstDrawing,
+    backlog::BacklogDrawing, calendar::CalendarDrawing, chat_message::ChatMessageDrawing,
+    new_typst::NewTypstDrawing, photo::PhotoDrawing, tictactoe::TicTacToeDrawing,
+    typst::TypstDrawing,
 };
 
 pub const FEED: f32 = 96.0;

showbits-thermal-printer/src/drawer/cells.rs

@@ -1,93 +0,0 @@
-use image::{
-    Rgba, RgbaImage,
-    imageops::{self, FilterType},
-};
-use showbits_common::{Node, Tree, WidgetExt, color, widgets::Image};
-use taffy::{AlignItems, Display, FlexDirection, prelude::length, style_helpers::percent};
-
-use crate::{persistent_printer::PersistentPrinter, printer::Printer};
-
-use super::{Context, Drawing, FEED};
-
-const BLACK: Rgba<u8> = Rgba([0, 0, 0, 255]);
-const WHITE: Rgba<u8> = Rgba([255, 255, 255, 255]);
-
-fn b2c(bool: bool) -> Rgba<u8> {
-    match bool {
-        true => BLACK,
-        false => WHITE,
-    }
-}
-
-fn c2b(color: Rgba<u8>) -> bool {
-    color == BLACK
-}
-
-fn neighbors_at(image: &RgbaImage, x: u32, y: u32) -> [bool; 3] {
-    let left = x
-        .checked_sub(1)
-        .map(|x| *image.get_pixel(x, y))
-        .unwrap_or(WHITE);
-
-    let mid = *image.get_pixel(x, y);
-
-    let right = image.get_pixel_checked(x + 1, y).copied().unwrap_or(WHITE);
-
-    [c2b(left), c2b(mid), c2b(right)]
-}
-
-fn apply_rule(rule: u8, neighbors: [bool; 3]) -> bool {
-    let [left, mid, right] = neighbors.map(|n| n as u8);
-    let index = (left << 2) | (mid << 1) | right;
-    rule & (1 << index) != 0
-}
-
-pub struct CellsDrawing {
-    pub rule: u8,
-    pub rows: u32,
-    pub scale: u32,
-}
-
-impl Drawing for CellsDrawing {
-    fn draw(&self, printer: &mut PersistentPrinter, ctx: &mut Context) -> anyhow::Result<()> {
-        let mut image: image::ImageBuffer<Rgba<u8>, Vec<u8>> =
-            RgbaImage::new(Printer::WIDTH / self.scale, self.rows);
-
-        // Initialize first line randomly
-        for x in 0..image.width() {
-            image.put_pixel(x, 0, b2c(rand::random()));
-        }
-
-        // Calculate next rows
-        for y in 1..self.rows {
-            for x in 0..image.width() {
-                let neighbors = neighbors_at(&image, x, y - 1);
-                let state = apply_rule(self.rule, neighbors);
-                image.put_pixel(x, y, b2c(state));
-            }
-        }
-
-        let image = imageops::resize(
-            &image,
-            image.width() * self.scale,
-            image.height() * self.scale,
-            FilterType::Nearest,
-        );
-
-        let mut tree = Tree::<Context>::new(color::WHITE);
-
-        let image = Image::new(image).node().register(&mut tree)?;
-
-        let root = Node::empty()
-            .with_size_width(percent(1.0))
-            .with_padding_bottom(length(FEED))
-            .with_display(Display::Flex)
-            .with_flex_direction(FlexDirection::Column)
-            .with_align_items(Some(AlignItems::Center))
-            .and_child(image)
-            .register(&mut tree)?;
-
-        printer.print_tree(&mut tree, ctx, root)?;
-        Ok(())
-    }
-}

showbits-thermal-printer/src/server.rs

@@ -15,8 +15,7 @@ use tokio::{net::TcpListener, sync::mpsc};
 use crate::{
     documents,
     drawer::{
-        CalendarDrawing, CellsDrawing, ChatMessageDrawing, Command, PhotoDrawing, TicTacToeDrawing,
-        TypstDrawing,
+        CalendarDrawing, ChatMessageDrawing, Command, PhotoDrawing, TicTacToeDrawing, TypstDrawing,
     },
 };
 
@@ -30,7 +29,10 @@ pub struct Server {
 pub async fn run(tx: mpsc::Sender<Command>, addr: String) -> anyhow::Result<()> {
     let app = Router::new()
         .route("/calendar", post(post_calendar))
-        .route("/cells", post(post_cells))
+        .route(
+            "/cells",
+            post(documents::cells::post).fallback(get_static_file),
+        )
         .route("/chat_message", post(post_chat_message))
         .route("/egg", post(documents::egg::post).fallback(get_static_file))
         .route(
@@ -71,26 +73,6 @@ async fn post_calendar(server: State<Server>, request: Form<PostCalendarForm>) {
         .await;
 }
 
-// /cells
-
-#[derive(Deserialize)]
-struct PostCellsForm {
-    rule: u8,
-    rows: Option<u32>,
-    scale: Option<u32>,
-}
-
-async fn post_cells(server: State<Server>, request: Form<PostCellsForm>) {
-    let _ = server
-        .tx
-        .send(Command::draw(CellsDrawing {
-            rule: request.0.rule,
-            rows: request.0.rows.unwrap_or(32).min(512),
-            scale: request.0.scale.unwrap_or(4),
-        }))
-        .await;
-}
-
 // /chat_message
 
 #[derive(Deserialize)]