trying to make config work

.direnv/bin/nix-direnv-reload

@@ -1,19 +1,19 @@
 #!/usr/bin/env bash
 set -e
-if [[ ! -d "/mnt/removable/Projects/Rust/floating-calculator" ]]; then
+if [[ ! -d "/home/maxag/Projects/Rust/floating-calculator" ]]; then
   echo "Cannot find source directory; Did you move it?"
-  echo "(Looking for "/mnt/removable/Projects/Rust/floating-calculator")"
+  echo "(Looking for "/home/maxag/Projects/Rust/floating-calculator")"
   echo 'Cannot force reload with this script - use "direnv reload" manually and then try again'
   exit 1
 fi
 
 # rebuild the cache forcefully
-_nix_direnv_force_reload=1 direnv exec "/mnt/removable/Projects/Rust/floating-calculator" true
+_nix_direnv_force_reload=1 direnv exec "/home/maxag/Projects/Rust/floating-calculator" true
 
 # Update the mtime for .envrc.
 # This will cause direnv to reload again - but without re-building.
-touch "/mnt/removable/Projects/Rust/floating-calculator/.envrc"
+touch "/home/maxag/Projects/Rust/floating-calculator/.envrc"
 
 # Also update the timestamp of whatever profile_rc we have.
 # This makes sure that we know we are up to date.
-touch -r "/mnt/removable/Projects/Rust/floating-calculator/.envrc" "/mnt/removable/Projects/Rust/floating-calculator/.direnv"/*.rc
+touch -r "/home/maxag/Projects/Rust/floating-calculator/.envrc" "/home/maxag/Projects/Rust/floating-calculator/.direnv"/*.rc

Cargo.lock

@@ -1022,6 +1022,9 @@ dependencies = [
  "iced",
  "iced_layershell",
  "pkg-config",
+ "quote",
+ "serde",
+ "toml",
  "winit",
 ]
 
@@ -2902,6 +2905,15 @@ dependencies = [
  "syn",
 ]
 
+[[package]]
+name = "serde_spanned"
+version = "1.0.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f8bbf91e5a4d6315eee45e704372590b30e260ee83af6639d64557f51b067776"
+dependencies = [
+ "serde_core",
+]
+
 [[package]]
 name = "shlex"
 version = "1.3.0"
@@ -3251,6 +3263,21 @@ dependencies = [
  "pin-project-lite",
 ]
 
+[[package]]
+name = "toml"
+version = "1.0.3+spec-1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c7614eaf19ad818347db24addfa201729cf2a9b6fdfd9eb0ab870fcacc606c0c"
+dependencies = [
+ "indexmap",
+ "serde_core",
+ "serde_spanned",
+ "toml_datetime 1.0.0+spec-1.1.0",
+ "toml_parser",
+ "toml_writer",
+ "winnow",
+]
+
 [[package]]
 name = "toml_datetime"
 version = "0.7.5+spec-1.1.0"
@@ -3260,6 +3287,15 @@ dependencies = [
  "serde_core",
 ]
 
+[[package]]
+name = "toml_datetime"
+version = "1.0.0+spec-1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "32c2555c699578a4f59f0cc68e5116c8d7cabbd45e1409b989d4be085b53f13e"
+dependencies = [
+ "serde_core",
+]
+
 [[package]]
 name = "toml_edit"
 version = "0.23.10+spec-1.0.0"
@@ -3267,7 +3303,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "84c8b9f757e028cee9fa244aea147aab2a9ec09d5325a9b01e0a49730c2b5269"
 dependencies = [
  "indexmap",
- "toml_datetime",
+ "toml_datetime 0.7.5+spec-1.1.0",
  "toml_parser",
  "winnow",
 ]
@@ -3281,6 +3317,12 @@ dependencies = [
  "winnow",
 ]
 
+[[package]]
+name = "toml_writer"
+version = "1.0.6+spec-1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ab16f14aed21ee8bfd8ec22513f7287cd4a91aa92e44edfe2c17ddd004e92607"
+
 [[package]]
 name = "tracing"
 version = "0.1.44"

Cargo.toml

@@ -13,6 +13,9 @@ winit = { version = "0.30.12", default-features = false, features = ["wayland"]
 [build-dependencies]
 cxx-build = "1.0"
 pkg-config = "0.3"
+quote = "1.0.44"
+toml = {version = "1.0.3", default-features = false, features = ["parse", "serde", "std"] }
+serde = "1.0.228"
 
 [profile.release]
 opt-level = 3

build.rs

@@ -1,6 +1,21 @@
-fn main() {
+use std::{fs, path::Path};
-    let lib = pkg_config::probe_library("libqalculate").expect("libqalculate not found");
 
+use quote::quote;
+use serde::Deserialize;
+
+fn main() {
+    let lib = probe_libqalculate();
+    build_cxx_bridge(&lib);
+    emit_cargo_metadata();
+    load_config();
+}
+
+fn probe_libqalculate() -> pkg_config::Library {
+    pkg_config::probe_library("libqalculate")
+        .expect("libqalculate not found — install it via your package manager")
+}
+
+fn build_cxx_bridge(lib: &pkg_config::Library) {
     cxx_build::bridge("src/update.rs")
         .file("src/qalc_bridge.cc")
         .includes(&lib.include_paths)
@@ -8,14 +23,96 @@ fn main() {
         .flag_if_supported("-std=c++17")
         .compiler("g++")
         .compile("qalc-bridge");
+}
 
-    println!(
+fn emit_cargo_metadata() {
-        "cargo:rustc-link-search=native={}",
+    let out_dir = std::env::var("OUT_DIR").unwrap();
-        std::env::var("OUT_DIR").unwrap()
+    println!("cargo:rustc-link-search=native={out_dir}");
-    );
     println!("cargo:rustc-link-lib=static=qalc-bridge");
 
-    println!("cargo:rerun-if-changed=src/update.rs");
+    for file in &["src/update.rs", "src/qalc_bridge.cc", "src/qalc_bridge.h"] {
-    println!("cargo:rerun-if-changed=src/qalc_bridge.cc");
+        println!("cargo:rerun-if-changed={file}");
-    println!("cargo:rerun-if-changed=src/qalc_bridge.h");
+    }
+}
+
+fn load_config() {
+    println!("cargo:rerun-if-changed=config.toml");
+
+    let config: Config =
+        toml::from_str(&fs::read_to_string(Path::new("./config.toml")).unwrap_or_default())
+            .unwrap_or_default();
+
+    let theme = if !config.enable {
+        quote! {
+            use iced::Theme;
+            use crate::state::State;
+
+            pub const BORDER_RADIUS: f32 = 15.;
+            pub const BORDER_WIDTH: f32 = 2.;
+            pub const PADDING: f32 = 8.;
+            pub const WINDOW_SIZE: (u32, u32) = (400, 400);
+            pub const BG_ALPHA: f32 = 0.75;
+
+            pub fn theme(_state: &State) -> Theme {
+                match dark_light::detect() {
+                    Ok(dark_light::Mode::Light) => Theme::Light,
+                    _ => Theme::CatppuccinMocha,
+                }
+            }
+        }
+    } else {
+        quote! {
+            use iced::Theme;
+            use crate::state::State;
+
+            pub const BORDER_RADIUS: f32 = #&config.border.radius;
+            pub const BORDER_WIDTH: f32 = #&config.border.width;
+            pub const PADDING: f32 = #&config.border.padding;
+            pub const WINDOW_SIZE: (u32, u32) = (#(&config.window_size.width), #&config.window_size.height);
+            pub const BG_ALPHA: f32 = 0.75;
+
+            pub fn theme(_state: &State) -> Theme {
+                match dark_light::detect() {
+                    Ok(dark_light::Mode::Light) => Theme::Light,
+                    _ => Theme::CatppuccinMocha,
+                }
+            }
+        }
+    };
+
+    let out_dir = std::env::var("OUT_DIR").unwrap();
+    std::fs::write(format!("{out_dir}/theme.rs"), theme.to_string()).unwrap();
+}
+
+#[derive(Deserialize, Default)]
+struct WindowSize {
+    width: u32,
+    height: u32,
+}
+
+#[derive(Deserialize, Default)]
+struct Border {
+    radius: f32,
+    width: f32,
+    padding: f32,
+}
+
+#[derive(Deserialize, Default)]
+struct Palette {
+    background: String,
+    text: String,
+    primary: String,
+    success: String,
+    warning: String,
+    danger: String,
+}
+
+#[derive(Deserialize, Default)]
+struct Config {
+    enable: bool,
+    transparency: f32,
+
+    window_size: WindowSize,
+    border: Border,
+    palette: Palette,
 }

config.toml

@@ -0,0 +1,19 @@
+enable = true
+transparency = 0.75
+
+[window_size]
+width = 800
+height = 400
+
+[border]
+radius = 15.0
+width = 2.0
+padding = 3.0
+
+[pallete]
+background = "#1a1d23"
+text       = "#e8e8f4"
+primary    = "#7c85f0"
+success    = "#4ecb8f"
+warning    = "#f0c060"
+danger     = "#f05a6e"

src/main.rs

@@ -1,19 +1,17 @@
 mod state;
 mod update;
+mod view;
 
-use crate::state::{Message, State};
+use crate::state::Message;
 use crate::update::update;
-use iced::widget::{Column, TextInput, column, container, text, text_input};
+use crate::view::view;
-use iced::{Background, Border, Color, Element, Theme};
+use iced::widget::{container, text_input};
+use iced::{Background, Border, Color};
 use iced_layershell::application;
 use iced_layershell::reexport::Anchor;
 use iced_layershell::settings::{LayerShellSettings, Settings};
 
-const BORDER_RADIUS: f32 = 15.;
+include!(concat!(env!("OUT_DIR"), "/theme.rs"));
-const BORDER_WIDTH: f32 = 2.;
-const PADDING: f32 = 8.;
-const WINDOW_SIZE: (u32, u32) = (400, 400);
-const BG_ALPHA: f32 = 0.75;
 
 pub fn main() -> Result<(), iced_layershell::Error> {
     application(
@@ -47,33 +45,6 @@ fn subscription(_state: &State) -> iced::Subscription<Message> {
     ])
 }
 
-fn view(state: &State) -> Element<'_, Message> {
-    let input = TextInput::new("Type something here...", &state.current_message)
-        .on_input(Message::TextInput)
-        .on_submit(Message::TextSubmit)
-        .id(state.input_id.clone())
-        .style(input_style);
-
-    let history = state
-        .history
-        .iter()
-        .rev()
-        .map(|msg| column![text!("{}", msg.promt).size(12), text!(" {}", msg.output),].into());
-
-    let content = Column::with_children(
-        std::iter::once(input.into())
-            .chain(history)
-            .collect::<Vec<Element<_>>>(),
-    );
-
-    container(content)
-        .width(iced::Length::Fill)
-        .height(iced::Length::Fill)
-        .padding(PADDING)
-        .style(container_style)
-        .into()
-}
-
 fn input_style(theme: &iced::Theme, _status: text_input::Status) -> text_input::Style {
     let ext = theme.extended_palette();
     text_input::Style {
@@ -102,13 +73,6 @@ fn container_style(theme: &iced::Theme) -> container::Style {
     }
 }
 
-fn theme(_state: &State) -> Theme {
-    match dark_light::detect() {
-        Ok(dark_light::Mode::Light) => Theme::Light,
-        _ => Theme::CatppuccinMocha,
-    }
-}
-
 fn style(_state: &State, theme: &iced::Theme) -> iced::theme::Style {
     iced::theme::Style {
         background_color: Color::TRANSPARENT,

src/view.rs

@@ -1,4 +1,8 @@
-fn view(state: &State) -> Element<'_, Message> {
+use crate::state::{Message, State};
+use iced::widget::{Column, TextInput, column, container, text, text_input};
+use iced::{Background, Border, Color, Element, color};
+
+pub fn view(state: &State) -> Element<'_, Message> {
     let input: TextInput<'_, Message> =
         TextInput::new("Type something here...", &state.current_message)
             .on_input(Message::TextInput)