better choosing of version

src/lib.rs

@@ -1 +1,3 @@
-mod qr;
+pub mod qr;
+
+pub use qr::Mode;

src/main.rs

@@ -5,6 +5,8 @@ use eframe::egui;
 use egui_extras::RetainedImage;
 use fast_qr::convert::image::ImageBuilder;
 
+use godiva::qr::*;
+
 #[derive(Parser, Debug)]
 #[clap(author, version, trailing_var_arg = true)]
 struct Cli {
@@ -40,21 +42,30 @@ fn main() -> Result<(), eframe::Error> {
     eframe::run_native(
         "Show an image with eframe/egui",
         options,
-        Box::new(|_cc| Box::new(Flasher { content })),
+        Box::new(|_cc| {
+            Box::new(Flasher {
+                content,
+                mode: Mode::Ascii,
+            })
+        }),
     )
 }
 
 struct Flasher {
     pub content: Vec<u8>,
+    pub mode: Mode,
 }
 
 impl eframe::App for Flasher {
     fn update(&mut self, ctx: &egui::Context, _frame: &mut eframe::Frame) {
         egui::CentralPanel::default().show(ctx, |ui| {
             let heading_text = String::from_utf8(self.content.clone()).unwrap();
+            let len = heading_text.len();
             ui.heading(heading_text);
+            let size = get_size(len, self.mode);
+            let version = get_version(size, fast_qr::ECL::H);
             let qr = fast_qr::QRBuilder::new(self.content.clone())
-                .version(fast_qr::Version::V40)
+                .version(version)
                 .build()
                 .unwrap();
             let bytes = ImageBuilder::default()

src/qr.rs

@@ -15,7 +15,7 @@ pub fn get_size(len: usize, mode: Mode) -> usize {
     }
 }
 
-pub fn choose_version(size: usize, ecl: ECL) -> fast_qr::Version {
+pub fn get_version(size: usize, ecl: ECL) -> fast_qr::Version {
     use fast_qr::Version::*;
     let ecl = match ecl {
         ECL::L => 0.7,