From 8c290732607692cd94247f7e3e9c80fad1dfe516 Mon Sep 17 00:00:00 2001
From: Jules Aguillon
Date: Sun, 11 Feb 2024 20:46:36 +0100
Subject: Compose key

The COMPOSE_PENDING modifier indicate whether a compose sequence is in
progress. The new key of kind Compose_pending sets the current state of
the sequence.

The compose sequences are compiled into a state machine by a python
script into a compact encoding.

The state of the pending compose is determined by the index of a state.
---
 srcs/juloo.keyboard2/Keyboard2View.java | 32 +++++++++++++++++++++++++-------
 1 file changed, 25 insertions(+), 7 deletions(-)

(limited to 'srcs/juloo.keyboard2/Keyboard2View.java')

diff --git a/srcs/juloo.keyboard2/Keyboard2View.java b/srcs/juloo.keyboard2/Keyboard2View.java
index fb95412..88b718c 100644
--- a/srcs/juloo.keyboard2/Keyboard2View.java
+++ b/srcs/juloo.keyboard2/Keyboard2View.java
@@ -25,6 +25,10 @@ public class Keyboard2View extends View
   private KeyValue _shift_kv;
   private KeyboardData.Key _shift_key;
 
+  /** Used to add fake pointers. */
+  private KeyValue _compose_kv;
+  private KeyboardData.Key _compose_key;
+
   private Pointers _pointers;
 
   private Pointers.Modifiers _mods;
@@ -98,6 +102,8 @@ public class Keyboard2View extends View
       _shift_kv = _shift_kv.withFlags(_shift_kv.getFlags() | KeyValue.FLAG_LOCK);
       _shift_key = _keyboard.findKeyWithValue(_shift_kv);
     }
+    _compose_kv = KeyValue.getKeyByName("compose");
+    _compose_key = _keyboard.findKeyWithValue(_compose_kv);
     reset();
   }
 
@@ -109,26 +115,38 @@ public class Keyboard2View extends View
     invalidate();
   }
 
-  /** Called by auto-capitalisation. */
-  public void set_shift_state(boolean state, boolean lock)
+  void set_fake_ptr_latched(KeyboardData.Key key, KeyValue kv, boolean latched,
+      boolean lock)
   {
-    if (_keyboard == null || _shift_key == null)
+    if (_keyboard == null || key == null)
       return;
-    int flags = _pointers.getKeyFlags(_shift_key, _shift_kv);
-    if (state)
+    int flags = _pointers.getKeyFlags(key, kv);
+    if (latched)
     {
       if (flags != -1 && !lock)
         return; // Don't replace an existing pointer
-      _pointers.add_fake_pointer(_shift_kv, _shift_key, lock);
+      _pointers.add_fake_pointer(kv, key, lock);
     }
     else
     {
       if ((flags & KeyValue.FLAG_FAKE_PTR) == 0)
         return; // Don't remove locked pointers
-      _pointers.remove_fake_pointer(_shift_kv, _shift_key);
+      _pointers.remove_fake_pointer(kv, key);
     }
   }
 
+  /** Called by auto-capitalisation. */
+  public void set_shift_state(boolean latched, boolean lock)
+  {
+    set_fake_ptr_latched(_shift_key, _shift_kv, latched, lock);
+  }
+
+  /** Called from [KeyEventHandler]. */
+  public void set_compose_pending(boolean pending)
+  {
+    set_fake_ptr_latched(_compose_key, _compose_kv, pending, false);
+  }
+
   public KeyValue modifyKey(KeyValue k, Pointers.Modifiers mods)
   {
     if (_keyboard.modmap != null)
-- 
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