Merge pull request #3134 from sopvop/fix_text_input_cua

Fix TextInput copy/paste shortcuts for non latin keyboard layouts

core/src/keyboard/key.rs

@@ -30,6 +30,91 @@ impl Key {
             Self::Unidentified => Key::Unidentified,
         }
     }
+
+    /// Tries to convert this logical [`Key`] into its latin character, using the
+    /// [`Physical`] key provided for translation if it isn't already in latin.
+    ///
+    /// Returns `None` if no latin variant could be found.
+    ///
+    /// ```
+    /// use iced_core::keyboard::key::{Key, Named, Physical, Code};
+    ///
+    /// // Latin c
+    /// assert_eq!(
+    ///     Key::Character("c".into()).to_latin(Physical::Code(Code::KeyC)),
+    ///     Some('c'),
+    /// );
+    ///
+    /// // Cyrillic с
+    /// assert_eq!(
+    ///     Key::Character("с".into()).to_latin(Physical::Code(Code::KeyC)),
+    ///     Some('c'),
+    /// );
+    ///
+    /// // Arrow Left
+    /// assert_eq!(
+    ///     Key::Named(Named::ArrowLeft).to_latin(Physical::Code(Code::ArrowLeft)),
+    ///     None,
+    /// );
+    /// ```
+    pub fn to_latin(&self, physical_key: Physical) -> Option<char> {
+        let Self::Character(s) = self else {
+            return None;
+        };
+
+        let mut chars = s.chars();
+        let c = chars.next()?;
+
+        if chars.next().is_none() && c <= '\u{ff}' {
+            return Some(c);
+        }
+
+        let Physical::Code(code) = physical_key else {
+            return None;
+        };
+
+        let latin = match code {
+            Code::KeyA => 'a',
+            Code::KeyB => 'b',
+            Code::KeyC => 'c',
+            Code::KeyD => 'd',
+            Code::KeyE => 'e',
+            Code::KeyF => 'f',
+            Code::KeyG => 'g',
+            Code::KeyH => 'h',
+            Code::KeyI => 'i',
+            Code::KeyJ => 'j',
+            Code::KeyK => 'k',
+            Code::KeyL => 'l',
+            Code::KeyM => 'm',
+            Code::KeyN => 'n',
+            Code::KeyO => 'o',
+            Code::KeyP => 'p',
+            Code::KeyQ => 'q',
+            Code::KeyR => 'r',
+            Code::KeyS => 's',
+            Code::KeyT => 't',
+            Code::KeyU => 'u',
+            Code::KeyV => 'v',
+            Code::KeyW => 'w',
+            Code::KeyX => 'x',
+            Code::KeyY => 'y',
+            Code::KeyZ => 'z',
+            Code::Digit0 => '0',
+            Code::Digit1 => '1',
+            Code::Digit2 => '2',
+            Code::Digit3 => '3',
+            Code::Digit4 => '4',
+            Code::Digit5 => '5',
+            Code::Digit6 => '6',
+            Code::Digit7 => '7',
+            Code::Digit8 => '8',
+            Code::Digit9 => '9',
+            _ => return None,
+        };
+
+        Some(latin)
+    }
 }
 
 impl From<Named> for Key {

widget/src/text_editor.rs

@@ -1160,6 +1160,10 @@ pub struct KeyPress {
     ///
     /// You should use this key for any single key bindings (e.g. motions).
     pub modified_key: keyboard::Key,
+    /// The physical key pressed.
+    ///
+    /// You should use this key for layout-independent bindings.
+    pub physical_key: keyboard::key::Physical,
     /// The state of the keyboard modifiers.
     pub modifiers: keyboard::Modifiers,
     /// The text produced by the key press.
@@ -1174,6 +1178,7 @@ impl<Message> Binding<Message> {
         let KeyPress {
             key,
             modified_key,
+            physical_key,
             modifiers,
             text,
             status,
@@ -1183,21 +1188,13 @@ impl<Message> Binding<Message> {
             return None;
         }
 
-        let combination = match key.as_ref() {
-            keyboard::Key::Character("c") if modifiers.command() => {
-                Some(Self::Copy)
-            }
-            keyboard::Key::Character("x") if modifiers.command() => {
-                Some(Self::Cut)
-            }
-            keyboard::Key::Character("v")
-                if modifiers.command() && !modifiers.alt() =>
-            {
+        let combination = match key.to_latin(physical_key) {
+            Some('c') if modifiers.command() => Some(Self::Copy),
+            Some('x') if modifiers.command() => Some(Self::Cut),
+            Some('v') if modifiers.command() && !modifiers.alt() => {
                 Some(Self::Paste)
             }
-            keyboard::Key::Character("a") if modifiers.command() => {
-                Some(Self::SelectAll)
-            }
+            Some('a') if modifiers.command() => Some(Self::SelectAll),
             _ => None,
         };
 
@@ -1359,6 +1356,7 @@ impl<Message> Update<Message> {
             Event::Keyboard(keyboard::Event::KeyPressed {
                 key,
                 modified_key,
+                physical_key,
                 modifiers,
                 text,
                 ..
@@ -1374,6 +1372,7 @@ impl<Message> Update<Message> {
                 let key_press = KeyPress {
                     key: key.clone(),
                     modified_key: modified_key.clone(),
+                    physical_key: *physical_key,
                     modifiers: *modifiers,
                     text: text.clone(),
                     status,

widget/src/text_input.rs

@@ -902,6 +902,7 @@ where
                 key,
                 text,
                 modified_key,
+                physical_key,
                 ..
             }) => {
                 let state = state::<Renderer>(tree);
@@ -909,8 +910,8 @@ where
                 if let Some(focus) = &mut state.is_focused {
                     let modifiers = state.keyboard_modifiers;
 
-                    match key.as_ref() {
-                        keyboard::Key::Character("c")
+                    match key.to_latin(*physical_key) {
+                        Some('c')
                             if state.keyboard_modifiers.command()
                                 && !self.is_secure =>
                         {
@@ -926,7 +927,7 @@ where
                             shell.capture_event();
                             return;
                         }
-                        keyboard::Key::Character("x")
+                        Some('x')
                             if state.keyboard_modifiers.command()
                                 && !self.is_secure =>
                         {
@@ -955,7 +956,7 @@ where
                             update_cache(state, &self.value);
                             return;
                         }
-                        keyboard::Key::Character("v")
+                        Some('v')
                             if state.keyboard_modifiers.command()
                                 && !state.keyboard_modifiers.alt() =>
                         {
@@ -994,9 +995,7 @@ where
                             update_cache(state, &self.value);
                             return;
                         }
-                        keyboard::Key::Character("a")
-                            if state.keyboard_modifiers.command() =>
-                        {
+                        Some('a') if state.keyboard_modifiers.command() => {
                             let cursor_before = state.cursor;
 
                             state.cursor.select_all(&self.value);