Save selected color_mode using glib settings

Cargo.lock

@@ -140,7 +140,7 @@ version = "4.4.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0862016ff20d69b84ef8247369fabf5c008a7417002411897d40ee1f4532b873"
 dependencies = [
- "heck",
+ "heck 0.4.1",
  "proc-macro2",
  "quote",
  "syn 2.0.37",
@@ -379,7 +379,7 @@ version = "0.18.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "72793962ceece3863c2965d7f10c8786323b17c7adea75a515809fa20ab799a5"
 dependencies = [
- "heck",
+ "heck 0.4.1",
  "proc-macro-crate 2.0.0",
  "proc-macro-error",
  "proc-macro2",
@@ -528,6 +528,12 @@ version = "0.4.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "95505c38b4572b2d910cecb0281560f54b440a19336cbbcb27bf6ce6adc6f5a8"
 
+[[package]]
+name = "heck"
+version = "0.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2304e00983f87ffb38b55b444b5e3b60a884b5d30c0fca7d82fe33449bbe55ea"
+
 [[package]]
 name = "hermit-abi"
 version = "0.3.3"
@@ -608,6 +614,7 @@ dependencies = [
  "gtk4",
  "log",
  "poppler-rs",
+ "strum",
 ]
 
 [[package]]
@@ -798,6 +805,12 @@ dependencies = [
  "windows-sys",
 ]
 
+[[package]]
+name = "rustversion"
+version = "1.0.18"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0e819f2bc632f285be6d7cd36e25940d45b2391dd6d9b939e79de557f7014248"
+
 [[package]]
 name = "semver"
 version = "1.0.19"
@@ -854,6 +867,28 @@ version = "0.10.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "73473c0e59e6d5812c5dfe2a064a6444949f089e20eec9a2e5506596494e4623"
 
+[[package]]
+name = "strum"
+version = "0.26.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8fec0f0aef304996cf250b31b5a10dee7980c85da9d759361292b8bca5a18f06"
+dependencies = [
+ "strum_macros",
+]
+
+[[package]]
+name = "strum_macros"
+version = "0.26.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4c6bee85a5a24955dc440386795aa378cd9cf82acd5f764469152d2270e581be"
+dependencies = [
+ "heck 0.5.0",
+ "proc-macro2",
+ "quote",
+ "rustversion",
+ "syn 2.0.37",
+]
+
 [[package]]
 name = "syn"
 version = "1.0.109"
@@ -883,7 +918,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "30c2de8a4d8f4b823d634affc9cd2a74ec98c53a756f317e529a48046cbf71f3"
 dependencies = [
  "cfg-expr",
- "heck",
+ "heck 0.4.1",
  "pkg-config",
  "toml",
  "version-compare",

Cargo.toml

@@ -14,3 +14,4 @@ gtk = { version = "0.7.3", package = "gtk4", features = ["v4_8"] }
 anyhow = "1.0.75"
 log = "0.4.20"
 env_logger = "0.10.1"
+strum = { version = "0.26.3", features = ["derive"] }

de.frajul.music-reader.gschema.xml

@@ -6,5 +6,9 @@
       <default>false</default>
       <summary>Whether the application is in fullscreen mode</summary>
     </key>
+    <key name="color-mode" type="s">
+      <default>'Normal'</default>
+      <summary>The color mode used to render the pdf pages</summary>
+    </key>
   </schema>
 </schemalist>

src/color_mode.rs

@@ -1,12 +1,27 @@
-use cairo::ImageSurface;
+use core::fmt;
 
-#[derive(Clone)]
+use cairo::ImageSurface;
+use strum::EnumString;
+
+#[derive(Clone, EnumString, Debug)]
 pub enum ColorMode {
     Normal,
     Dark,
     Sepia,
 }
 
+impl fmt::Display for ColorMode {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        write!(f, "{:?}", self)
+    }
+}
+
+impl Default for ColorMode {
+    fn default() -> Self {
+        ColorMode::Normal
+    }
+}
+
 impl ColorMode {
     fn transform_color(&self, r: u8, g: u8, b: u8) -> (u8, u8, u8) {
         // l of black is 0.13 (approx 0x22)

src/ui.rs

@@ -2,6 +2,7 @@ use std::{
     cell::RefCell,
     path::{Path, PathBuf},
     rc::Rc,
+    str::FromStr,
     time::{Duration, Instant},
 };
 
@@ -226,7 +227,7 @@ impl Ui {
         debug!("building ui");
         let open_file_button = Button::from_icon_name("document-open");
         let fullscreen_button = Button::from_icon_name("view-fullscreen");
-        let normal_color_mode_button = ToggleButton::builder().label("Std").active(true).build();
+        let normal_color_mode_button = ToggleButton::builder().label("Std").build();
         let dark_color_mode_button = ToggleButton::builder()
             .label("Dark")
             .group(&normal_color_mode_button)
@@ -292,6 +293,13 @@ impl Ui {
             .build();
         window.present();
 
+        let color_mode = ColorMode::from_str(&settings.string("color-mode")).unwrap_or_default();
+        match color_mode {
+            ColorMode::Normal => normal_color_mode_button.set_active(true),
+            ColorMode::Dark => dark_color_mode_button.set_active(true),
+            ColorMode::Sepia => sepia_color_mode_button.set_active(true),
+        };
+
         let ui = Ui {
             settings,
             window,
@@ -307,7 +315,7 @@ impl Ui {
             image_right,
             document_canvas: None,
             last_touch_time: None,
-            color_mode: ColorMode::Normal,
+            color_mode,
         };
         let ui = Rc::new(RefCell::new(ui));
 
@@ -371,6 +379,11 @@ impl Ui {
 }
 
 fn switch_color_mode(ui: Rc<RefCell<Ui>>, color_mode: ColorMode) {
+    ui.borrow()
+        .settings
+        .set_string("color-mode", &color_mode.to_string())
+        .unwrap();
+
     ui.borrow_mut().color_mode = color_mode;
 
     if ui.borrow().document_canvas.is_none() {