save and restore window size and position

Cargo.toml

@@ -1,12 +1,11 @@
 [package]
 name = "lull"
 description = "a looping sound player for generating atmospheric soundscapes"
-version = "1.0.2"
+version = "1.0.3"
 authors = ["Max Bradbury <max@tinybird.info>"]
 repository = "https://tinybird.dev/max/lull"
 license = "MIT"
 edition = "2018"
-crate_type = "bin"
 
 [dependencies]
 dirs = "^3.0.1"
@@ -14,3 +13,6 @@ gdk = "^0.13.2"
 gio = "^0"
 gtk = "^0"
 rodio = "^0.11.0"
+serde = "^1.0.125"
+serde_derive = "^1.0.125"
+toml = "^0.5.8"

src/main.rs

@@ -4,14 +4,69 @@ use gio::prelude::*;
 use gtk::prelude::*;
 use gtk::Orientation;
 use rodio::{Sink, Source};
+use serde_derive::{Serialize, Deserialize};
 use std::env::args;
 use std::fs::File;
-use std::io::BufReader;
+use std::io::{BufReader, Write, Read};
 use std::path::PathBuf;
 use std::process::Command;
 
 const SPACING: i32 = 16;
 
+#[derive(Debug, Eq, PartialEq, Serialize, Deserialize)]
+struct Config {
+    position: (i32, i32),
+    size:     (i32, i32),
+}
+
+fn save_config(config: Config) {
+    let mut config_path = dirs::config_dir()
+        .expect("Couldn't find user config directory");
+
+    config_path.push("ruin/lull");
+
+    if !config_path.exists() {
+        std::fs::create_dir_all(&config_path)
+            .expect("Couldn't create lull config directory");
+    }
+
+    let toml = toml::to_string(&config)
+        .expect("Couldn't convert config to toml");
+
+    config_path.push("lull.toml");
+
+    let mut config_file = File::create(config_path)
+        .expect("Couldn't create config file");
+
+    print!("{}", toml);
+
+    config_file.write(&toml.into_bytes())
+        .expect("Couldn't write config file");
+}
+
+fn load_config() -> Option<Config> {
+    let mut config_path = dirs::config_dir()
+        .expect("Couldn't find user config directory");
+
+    config_path.push("ruin/lull/lull.toml");
+
+    let file = File::open(config_path);
+
+    if file.is_err() {
+        return None;
+    }
+
+    let mut toml = String::new();
+
+    file.unwrap().read_to_string(&mut toml)
+        .expect("Couldn't read config file");
+
+    let config = toml::from_str(&toml)
+        .expect("Couldn't parse config");
+
+    Some(config)
+}
+
 #[cfg(target_os = "windows")]
 fn file_manager() -> &'static str {
     "explorer"
@@ -57,6 +112,11 @@ fn build_ui(application: &gtk::Application) {
     window.set_position(gtk::WindowPosition::Center);
     window.set_default_size(256, 128);
 
+    if let Some(config) = load_config() {
+        window.move_(config.position.0, config.position.1);
+        window.resize(config.size.0, config.size.1);
+    }
+
     let button_manage_sounds = gtk::Button::with_label("manage sounds");
 
     button_manage_sounds.connect_clicked(|_| {
@@ -153,6 +213,15 @@ fn build_ui(application: &gtk::Application) {
     }
 
     window.show_all();
+
+    window.connect_delete_event(|window, _event| {
+        save_config(Config {
+            position: window.get_position(),
+            size:     window.get_size()
+        });
+
+        Inhibit(false)
+    });
 }
 
 fn main() {