From c17b53ce7f16c202f139aff98a65f8d859f4412b Mon Sep 17 00:00:00 2001
From: Jules Aguillon
Date: Sat, 10 Dec 2022 19:39:22 +0100
Subject: Add option 'numpad_layout'

Allow choosing whether to show the high or the low digits first. The
numeric pane and the numpad are affected by the option.
---
 srcs/juloo.keyboard2/Config.java       | 44 ++++++++++++++++++++++++++++++----
 srcs/juloo.keyboard2/KeyboardData.java |  9 +++++--
 2 files changed, 47 insertions(+), 6 deletions(-)

(limited to 'srcs')

diff --git a/srcs/juloo.keyboard2/Config.java b/srcs/juloo.keyboard2/Config.java
index 8404946..fbb690d 100644
--- a/srcs/juloo.keyboard2/Config.java
+++ b/srcs/juloo.keyboard2/Config.java
@@ -28,6 +28,8 @@ final class Config
   public KeyboardData second_layout; // Or 'null' for none
   public KeyboardData custom_layout; // Might be 'null'
   public boolean show_numpad = false;
+  // From the 'numpad_layout' option, also apply to the numeric pane.
+  public boolean inverse_numpad = false;
   public float swipe_dist_px;
   public boolean vibrateEnabled;
   public long longPressTimeout;
@@ -120,6 +122,7 @@ final class Config
     layout = layout_of_string(res, _prefs.getString("layout", "none"));
     second_layout = layout_of_string(res, _prefs.getString("second_layout", "none"));
     custom_layout = KeyboardData.load_string(_prefs.getString("custom_layout", ""));
+    inverse_numpad = _prefs.getString("numpad_layout", "default").equals("low_first");
     // The baseline for the swipe distance correspond to approximately the
     // width of a key in portrait mode, as most layouts have 10 columns.
     // Multipled by the DPI ratio because most swipes are made in the diagonals.
@@ -161,7 +164,7 @@ final class Config
    *  - Replace the action key to show the right label
    *  - Swap the enter and action keys
    */
-  public KeyboardData modify_layout(KeyboardData original_kw)
+  public KeyboardData modify_layout(KeyboardData kw)
   {
     // Update the name to avoid caching in KeyModifier
     final KeyValue action_key = (actionLabel == null) ? null :
@@ -171,7 +174,28 @@ final class Config
     final Set<KeyValue> extra_keys = new HashSet<KeyValue>();
     extra_keys.addAll(extra_keys_subtype);
     extra_keys.addAll(extra_keys_param);
-    KeyboardData kw = original_kw.mapKeys(new KeyboardData.MapKeyValues() {
+    if (kw.num_pad && show_numpad)
+      kw = kw.addNumPad();
+    kw = kw.mapKeys(new KeyboardData.MapKeyValues() {
+      /** Apply to the center value only. Partial match, fallback to [apply]. */
+      public KeyboardData.Corner apply_key0(KeyboardData.Corner corner)
+      {
+        if (corner == null)
+          return null;
+        KeyValue kv = corner.kv;
+        switch (kv.getKind())
+        {
+          case Char:
+            char c = kv.getChar();
+            if (inverse_numpad)
+              c = inverse_numpad_char(c);
+            if (c != kv.getChar())
+              return KeyboardData.Corner.of_kv(kv.withChar(c));
+            break;
+        }
+        return super.apply(corner);
+      }
+
       public KeyValue apply(KeyValue key, boolean localized)
       {
         boolean is_extra_key = extra_keys.contains(key);
@@ -214,8 +238,6 @@ final class Config
     });
     if (extra_keys.size() > 0)
       kw = kw.addExtraKeys(extra_keys.iterator());
-    if (original_kw.num_pad && show_numpad)
-      kw = kw.addNumPad();
     return kw;
   }
 
@@ -284,6 +306,20 @@ final class Config
     return KeyboardData.load(res, id);
   }
 
+  char inverse_numpad_char(char c)
+  {
+    switch (c)
+    {
+      case '7': return '1';
+      case '8': return '2';
+      case '9': return '3';
+      case '1': return '7';
+      case '2': return '8';
+      case '3': return '9';
+      default: return c;
+    }
+  }
+
   private static Config _globalConfig = null;
 
   public static void initGlobalConfig(SharedPreferences prefs, Resources res,
diff --git a/srcs/juloo.keyboard2/KeyboardData.java b/srcs/juloo.keyboard2/KeyboardData.java
index 7b50f98..550af40 100644
--- a/srcs/juloo.keyboard2/KeyboardData.java
+++ b/srcs/juloo.keyboard2/KeyboardData.java
@@ -462,12 +462,17 @@ class KeyboardData
 
     public Key apply(Key k)
     {
-      return new Key(apply(k.key0), apply(k.key1), apply(k.key2),
+      return new Key(apply_key0(k.key0), apply(k.key1), apply(k.key2),
           apply(k.key3), apply(k.key4), k.width, k.shift, k.edgekeys,
           k.indication);
     }
 
-    private Corner apply(Corner c)
+    protected Corner apply_key0(Corner c)
+    {
+      return apply(c);
+    }
+
+    protected Corner apply(Corner c)
     {
       if (c == null)
         return null;
-- 
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