feat(focused): ability to truncate label text

src/config/mod.rs

@@ -1,4 +1,5 @@
 mod r#impl;
+mod truncate;
 
 use crate::modules::clock::ClockModule;
 use crate::modules::custom::CustomModule;
@@ -13,6 +14,8 @@ use crate::script::ScriptInput;
 use serde::Deserialize;
 use std::collections::HashMap;
 
+pub use self::truncate::{EllipsizeMode, TruncateMode};
+
 #[derive(Debug, Deserialize, Clone)]
 pub struct CommonConfig {
     pub show_if: Option<ScriptInput>,

src/config/truncate.rs

@@ -0,0 +1,54 @@
+use gtk::pango::EllipsizeMode as GtkEllipsizeMode;
+use gtk::prelude::*;
+use serde::Deserialize;
+
+#[derive(Debug, Deserialize, Clone, Copy)]
+#[serde(rename_all = "snake_case")]
+pub enum EllipsizeMode {
+    Start,
+    Middle,
+    End,
+}
+
+impl From<EllipsizeMode> for GtkEllipsizeMode {
+    fn from(value: EllipsizeMode) -> Self {
+        match value {
+            EllipsizeMode::Start => Self::Start,
+            EllipsizeMode::Middle => Self::Middle,
+            EllipsizeMode::End => Self::End,
+        }
+    }
+}
+
+#[derive(Debug, Deserialize, Clone, Copy)]
+#[serde(untagged)]
+pub enum TruncateMode {
+    Auto(EllipsizeMode),
+    MaxLength {
+        mode: EllipsizeMode,
+        length: Option<i32>,
+    },
+}
+
+impl TruncateMode {
+    const fn mode(&self) -> EllipsizeMode {
+        match self {
+            Self::MaxLength { mode, .. } | Self::Auto(mode) => *mode,
+        }
+    }
+
+    const fn length(&self) -> Option<i32> {
+        match self {
+            Self::Auto(_) => None,
+            Self::MaxLength { length, .. } => *length,
+        }
+    }
+
+    pub fn truncate_label(&self, label: &gtk::Label) {
+        label.set_ellipsize(self.mode().into());
+
+        if let Some(max_length) = self.length() {
+            label.set_max_width_chars(max_length);
+        }
+    }
+}