feat(config): add options to configure keyboard layout on Wayland

espanso-config/src/config/mod.rs

@@ -107,6 +107,10 @@ pub trait Config: Send + Sync {
   // If false, avoid applying the built-in patches to the current config.
   fn apply_patch(&self) -> bool;
 
+  // On Wayland, overrides the auto-detected keyboard configuration (RMLVO)
+  // which is used both for the detection and injection process.
+  fn keyboard_layout(&self) -> Option<RMLVOConfig>;
+
   fn is_match<'a>(&self, app: &AppProperties<'a>) -> bool;
 
   fn pretty_dump(&self) -> String {
@@ -192,6 +196,15 @@ pub enum ToggleKey {
   LeftMeta,
 }
 
+#[derive(Debug, Clone)]
+pub struct RMLVOConfig {
+  pub rules: Option<String>,
+  pub model: Option<String>,
+  pub layout: Option<String>,
+  pub variant: Option<String>,
+  pub options: Option<String>,
+}
+
 pub fn load_store(config_dir: &Path) -> Result<(impl ConfigStore, Vec<NonFatalErrorSet>)> {
   store::DefaultConfigStore::load(config_dir)
 }

espanso-config/src/config/parse/mod.rs

@@ -18,7 +18,7 @@
  */
 
 use anyhow::Result;
-use std::{convert::TryInto, path::Path};
+use std::{collections::BTreeMap, convert::TryInto, path::Path};
 use thiserror::Error;
 
 mod yaml;
@@ -43,6 +43,7 @@ pub(crate) struct ParsedConfig {
   pub paste_shortcut_event_delay: Option<usize>,
   pub inject_delay: Option<usize>,
   pub key_delay: Option<usize>,
+  pub keyboard_layout: Option<BTreeMap<String, String>>,
 
 
   // Includes

espanso-config/src/config/parse/yaml.rs

@@ -19,6 +19,7 @@
 
 use anyhow::Result;
 use serde::{Deserialize, Serialize};
+use serde_yaml::Mapping;
 use std::convert::TryFrom;
 
 use crate::util::is_yaml_empty;
@@ -78,6 +79,9 @@ pub(crate) struct YAMLConfig {
   #[serde(default)]
   pub apply_patch: Option<bool>,
 
+  #[serde(default)]
+  pub keyboard_layout: Option<Mapping>,
+
   // Include/Exclude
   #[serde(default)]
   pub includes: Option<Vec<String>>,
@@ -139,6 +143,18 @@ impl TryFrom<YAMLConfig> for ParsedConfig {
       word_separators: yaml_config.word_separators,
       backspace_limit: yaml_config.backspace_limit,
       apply_patch: yaml_config.apply_patch,
+      keyboard_layout: yaml_config.keyboard_layout.map(|mapping| {
+        mapping
+          .into_iter()
+          .filter_map(|(key, value)| {
+            if let (Some(key), Some(value)) = (key.as_str(), value.as_str()) {
+              Some((key.to_string(), value.to_string()))
+            } else {
+              None
+            }
+          })
+          .collect()
+      }),
 
       pre_paste_delay: yaml_config.pre_paste_delay,
       restore_clipboard_delay: yaml_config.restore_clipboard_delay,
@@ -161,7 +177,7 @@ impl TryFrom<YAMLConfig> for ParsedConfig {
 #[cfg(test)]
 mod tests {
   use super::*;
-  use std::convert::TryInto;
+  use std::{collections::BTreeMap, convert::TryInto};
 
   #[test]
   fn conversion_to_parsed_config_works_correctly() {
@@ -183,6 +199,13 @@ mod tests {
     backspace_delay: 30
     word_separators: ["'", "."]
     backspace_limit: 10
+    apply_patch: false
+    keyboard_layout:
+      rules: test_rule
+      model: test_model
+      layout: test_layout
+      variant: test_variant
+      options: test_options
       
     use_standard_includes: true
     includes: ["test1"]
@@ -199,6 +222,15 @@ mod tests {
     .unwrap();
     let parsed_config: ParsedConfig = config.try_into().unwrap();
 
+    let keyboard_layout: BTreeMap<String, String> =
+      vec![
+        ("rules".to_string(), "test_rule".to_string()),
+        ("model".to_string(), "test_model".to_string()),
+        ("layout".to_string(), "test_layout".to_string()),
+        ("variant".to_string(), "test_variant".to_string()),
+        ("options".to_string(), "test_options".to_string()),
+      ].into_iter().collect();
+
     assert_eq!(
       parsed_config,
       ParsedConfig {
@@ -216,6 +248,7 @@ mod tests {
         key_delay: Some(20),
         backspace_limit: Some(10),
         apply_patch: Some(false),
+        keyboard_layout: Some(keyboard_layout),
 
         pre_paste_delay: Some(300),
 

espanso-config/src/config/resolve.rs

@@ -25,14 +25,14 @@ use super::{
   parse::ParsedConfig,
   path::calculate_paths,
   util::os_matches,
-  AppProperties, Backend, Config, ToggleKey,
+  AppProperties, Backend, Config, RMLVOConfig, ToggleKey,
 };
 use crate::{counter::next_id, merge};
 use anyhow::Result;
 use log::error;
 use regex::Regex;
-use std::{iter::FromIterator, path::PathBuf};
 use std::{collections::HashSet, path::Path};
+use std::{iter::FromIterator, path::PathBuf};
 use thiserror::Error;
 
 const STANDARD_INCLUDES: &[&str] = &["../match/**/*.yml"];
@@ -79,7 +79,7 @@ impl Config for ResolvedConfig {
 
     if let Some(source_path) = self.source_path.as_ref() {
       if let Some(source_path) = source_path.to_str() {
-        return source_path
+        return source_path;
       }
     }
 
@@ -264,6 +264,16 @@ impl Config for ResolvedConfig {
   fn apply_patch(&self) -> bool {
     self.parsed.apply_patch.unwrap_or(true)
   }
+
+  fn keyboard_layout(&self) -> Option<RMLVOConfig> {
+    self.parsed.keyboard_layout.as_ref().map(|layout| RMLVOConfig {
+      rules: layout.get("rules").map(String::from),
+      model: layout.get("model").map(String::from),
+      layout: layout.get("layout").map(String::from),
+      variant: layout.get("variant").map(String::from),
+      options: layout.get("options").map(String::from),
+    })
+  }
 }
 
 impl ResolvedConfig {
@@ -336,6 +346,7 @@ impl ResolvedConfig {
       key_delay,
       word_separators,
       backspace_limit,
+      keyboard_layout,
       includes,
       excludes,
       extra_includes,

espanso-config/src/legacy/mod.rs

@@ -23,7 +23,13 @@ use regex::Regex;
 use std::{collections::HashMap, path::Path, sync::Arc};
 
 use self::config::LegacyConfig;
-use crate::matches::{MatchEffect, group::loader::yaml::{parse::{YAMLMatch, YAMLVariable}, try_convert_into_match, try_convert_into_variable}};
+use crate::matches::{
+  group::loader::yaml::{
+    parse::{YAMLMatch, YAMLVariable},
+    try_convert_into_match, try_convert_into_variable,
+  },
+  MatchEffect,
+};
 use crate::{config::store::DefaultConfigStore, counter::StructId};
 use crate::{
   config::Config,
@@ -333,7 +339,12 @@ impl Config for LegacyInteropConfig {
   }
 
   fn word_separators(&self) -> Vec<String> {
-    self.config.word_separators.iter().map(|c| String::from(*c)).collect()
+    self
+      .config
+      .word_separators
+      .iter()
+      .map(|c| String::from(*c))
+      .collect()
   }
 
   fn backspace_limit(&self) -> usize {
@@ -343,6 +354,10 @@ impl Config for LegacyInteropConfig {
   fn apply_patch(&self) -> bool {
     true
   }
+
+  fn keyboard_layout(&self) -> Option<crate::config::RMLVOConfig> {
+    None
+  }
 }
 
 struct LegacyMatchGroup {