Use new typst rendering in /test endpoint

showbits-thermal-printer/Cargo.toml

@@ -17,6 +17,7 @@ rust-embed = { workspace = true }
 serde = { workspace = true }
 showbits-assets = { workspace = true }
 showbits-common = { workspace = true }
+showbits-typst = { workspace = true }
 taffy = { workspace = true }
 tokio = { workspace = true, features = ["full"] }
 

showbits-thermal-printer/src/documents.rs

@@ -0,0 +1,9 @@
+use showbits_typst::Typst;
+
+pub use self::text::*;
+
+mod text;
+
+fn typst_with_lib() -> Typst {
+    Typst::new().with_file("/lib.typ", include_str!("documents/lib.typ"))
+}

showbits-thermal-printer/src/documents/lib.typ

@@ -0,0 +1,21 @@
+#let init(it) = {
+  set page(
+    width: 384pt,
+    height: auto,
+    margin: (x: 0pt, y: 4pt),
+  )
+  set text(
+    font: ("Unifont", "Unifont-JP", "Unifont Upper"),
+    size: 16pt,
+    fallback: false,
+  )
+  set par(
+    leading: 8pt, // Between lines
+    spacing: 26pt, // Between paragraphs
+  )
+  it
+}
+
+// Determined by experiments so that the top and bottom white border are roughly
+// the same size after tearing off the paper.
+#let feed = v(64pt + 32pt)

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

@@ -0,0 +1,5 @@
+{
+  "text": "Hello world! äöüßÄÖÜẞ😒\nSecond line\nThird line\n\nNew paragraph, with a very long line that hopefully will be word wrapped if everything goes according to plan.\n\nAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAH",
+  "force_wrap": true,
+  "feed": true
+}

showbits-thermal-printer/src/documents/text/lib.typ

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

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

@@ -0,0 +1,13 @@
+#import "lib.typ";
+#show: it => lib.init(it)
+
+#let data = json("data.json")
+
+#if data.at("force_wrap", default: false) {
+  show regex("."): it => it + sym.zws
+  data.text
+} else { data.text }
+
+#if data.at("feed", default: false) {
+  lib.feed
+}

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

@@ -0,0 +1,19 @@
+use serde::{Deserialize, Serialize};
+use showbits_typst::Typst;
+
+#[derive(Serialize, Deserialize)]
+pub struct Text {
+    pub text: String,
+    #[serde(default)]
+    pub force_wrap: bool,
+    #[serde(default)]
+    pub feed: bool,
+}
+
+impl From<Text> for Typst {
+    fn from(value: Text) -> Self {
+        super::typst_with_lib()
+            .with_json("/data.json", &value)
+            .with_main_file(include_str!("main.typ"))
+    }
+}

showbits-thermal-printer/src/drawer.rs

@@ -4,6 +4,7 @@ mod cells;
 mod chat_message;
 mod egg;
 mod image;
+mod new_typst;
 mod photo;
 mod text;
 mod tictactoe;
@@ -16,8 +17,9 @@ use crate::persistent_printer::PersistentPrinter;
 
 pub use self::{
     backlog::BacklogDrawing, calendar::CalendarDrawing, cells::CellsDrawing,
-    chat_message::ChatMessageDrawing, egg::EggDrawing, image::ImageDrawing, photo::PhotoDrawing,
-    text::TextDrawing, tictactoe::TicTacToeDrawing, typst::TypstDrawing,
+    chat_message::ChatMessageDrawing, egg::EggDrawing, image::ImageDrawing,
+    new_typst::NewTypstDrawing, photo::PhotoDrawing, text::TextDrawing,
+    tictactoe::TicTacToeDrawing, typst::TypstDrawing,
 };
 
 pub const FEED: f32 = 96.0;

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

@@ -0,0 +1,21 @@
+use showbits_typst::Typst;
+
+use crate::persistent_printer::PersistentPrinter;
+
+use super::{Context, Drawing};
+
+pub struct NewTypstDrawing(pub Typst);
+
+impl NewTypstDrawing {
+    pub fn new(typst: impl Into<Typst>) -> Self {
+        Self(typst.into())
+    }
+}
+
+impl Drawing for NewTypstDrawing {
+    fn draw(&self, printer: &mut PersistentPrinter, _ctx: &mut Context) -> anyhow::Result<()> {
+        let image = self.0.render()?;
+        printer.print_image(&image)?;
+        Ok(())
+    }
+}

showbits-thermal-printer/src/main.rs

@@ -2,6 +2,7 @@ mod drawer;
 mod persistent_printer;
 mod printer;
 mod server;
+mod documents;
 
 use std::{path::PathBuf, time::Duration};
 

showbits-thermal-printer/src/persistent_printer.rs

@@ -44,7 +44,7 @@ impl PersistentPrinter {
         tree.render(ctx, root, available)
     }
 
-    fn print_image(&mut self, image: &RgbaImage) -> anyhow::Result<()> {
+    fn print_image_immediately(&mut self, image: &RgbaImage) -> anyhow::Result<()> {
         let Some(printer) = &mut self.printer else {
             bail!("no printer found");
         };
@@ -60,12 +60,12 @@ impl PersistentPrinter {
 
     fn print_image_robustly(&mut self, image: &RgbaImage) -> anyhow::Result<()> {
         println!("Printing image");
-        if self.print_image(image).is_ok() {
+        if self.print_image_immediately(image).is_ok() {
             return Ok(());
         }
         println!("First attempt failed, reconnecting and retrying");
         self.reconnect_printer()?;
-        self.print_image(image)?;
+        self.print_image_immediately(image)?;
         Ok(())
     }
 
@@ -86,6 +86,13 @@ impl PersistentPrinter {
         Ok(())
     }
 
+    pub fn print_image(&mut self, image: &RgbaImage) -> anyhow::Result<()> {
+        if self.print_image_robustly(image).is_err() {
+            self.enqueue_image(image)?;
+        }
+        Ok(())
+    }
+
     pub fn print_tree<C>(
         &mut self,
         tree: &mut Tree<C>,
@@ -93,9 +100,7 @@ impl PersistentPrinter {
         root: NodeId,
     ) -> anyhow::Result<()> {
         let image = Self::render_tree_to_image(tree, ctx, root)?;
-        if self.print_image_robustly(&image).is_err() {
-            self.enqueue_image(&image)?;
-        }
+        self.print_image(&image)?;
         Ok(())
     }
 

showbits-thermal-printer/src/server.rs

@@ -13,9 +13,12 @@ use serde::Deserialize;
 use showbits_common::widgets::DitherAlgorithm;
 use tokio::{net::TcpListener, sync::mpsc};
 
-use crate::drawer::{
-    CalendarDrawing, CellsDrawing, ChatMessageDrawing, Command, EggDrawing, ImageDrawing,
-    PhotoDrawing, TextDrawing, TicTacToeDrawing, TypstDrawing,
+use crate::{
+    documents::Text,
+    drawer::{
+        CalendarDrawing, CellsDrawing, ChatMessageDrawing, Command, EggDrawing, ImageDrawing,
+        NewTypstDrawing, PhotoDrawing, TextDrawing, TicTacToeDrawing, TypstDrawing,
+    },
 };
 
 use self::{r#static::get_static_file, statuscode::status_code};
@@ -36,6 +39,7 @@ pub async fn run(tx: mpsc::Sender<Command>, addr: String) -> anyhow::Result<()>
         .route("/text", post(post_text))
         .route("/tictactoe", post(post_tictactoe))
         .route("/typst", post(post_typst).fallback(get_static_file))
+        .route("/test", post(post_test).fallback(get_static_file))
         .fallback(get(get_static_file))
         .layer(DefaultBodyLimit::max(32 * 1024 * 1024)) // 32 MiB
         .with_state(Server { tx });
@@ -222,3 +226,12 @@ async fn post_typst(server: State<Server>, request: Form<PostTypstForm>) {
         .send(Command::draw(TypstDrawing(request.0.source)))
         .await;
 }
+
+// /test
+
+async fn post_test(server: State<Server>, request: Form<Text>) {
+    let _ = server
+        .tx
+        .send(Command::draw(NewTypstDrawing::new(request.0)))
+        .await;
+}