Use new typst rendering in /test endpoint

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

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+#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"))
+    }
+}