Menu shortcut keys and flags

2 files changed, 116 insertions, 10 deletions

diff --git a/fltk-menu_items.adb b/fltk-menu_items.adb
index 6620a64..b72d8c3 100644
--- a/fltk-menu_items.adb
+++ b/fltk-menu_items.adb
@@ -8,6 +8,61 @@ use type System.Address;
 package body FLTK.Menu_Items is
 
 
+    function Create
+           (Key : Pressable_Key)
+        return Shortcut_Key is
+    begin
+        return This : Shortcut_Key do
+            This.Modifiers := Mod_None;
+            This.Keypress := Key;
+        end return;
+    end Create;
+
+
+    function "+"
+           (Left, Right : in Modifer_Key)
+        return Modifier_Key is
+    begin
+        return Left or Right;
+    end "+";
+
+
+    function "+"
+           (Left  : in Modifier_Key;
+            Right : in Pressable_Key)
+        return Shortcut_Key is
+    begin
+        return This : Shortcut_Key do
+            This.Modifiers := Left;
+            This.Keypress := Right;
+        end return;
+    end "+";
+
+
+    function "+"
+           (Left  : in Modifer_Key;
+            Right : in Shortcut_Key)
+        return Shortcut_Key is
+    begin
+        return This : Shortcut_Key do
+            This.Modifiers := Left or Right.Modifiers;
+            This.Keypress := Right.Keypress;
+        end return;
+    end "+";
+
+
+
+
+    function "+"
+           (Left, Right : in Menu_Flag)
+        return Menu_Flag is
+    begin
+        return Left or Right;
+    end "+";
+
+
+
+
     procedure Finalize
            (This : in out Menu_Item) is
     begin
@@ -18,10 +73,10 @@ package body FLTK.Menu_Items is
 
 
     function Create
-           (Text : in String;
-            Shortcut : in Shortcut_Key;
-            Action : in FLTK.Callbacks.Callback;
-            Flags : Menu_Flag)
+           (Text     : in String;
+            Action   : in FLTK.Callbacks.Callback;
+            Shortcut : in Shortcut_Key := No_Key;
+            Flags    : in Menu_Flag := Flag_Normal)
         return Menu_Item is
     begin
         return This : Menu_Item do
diff --git a/fltk-menu_items.ads b/fltk-menu_items.ads
index 51554b0..8cade15 100644
--- a/fltk-menu_items.ads
+++ b/fltk-menu_items.ads
@@ -1,6 +1,7 @@
 
 
 with FLTK.Callbacks;
+private with Interfaces;
 
 
 package FLTK.Menu_Items is
@@ -9,21 +10,71 @@ package FLTK.Menu_Items is
     type Menu_Item is new Wrapper with private;
 
 
-    type Shortcut_Key is Integer;
-    type Menu_Flag is Integer;
+    type Shortcut_Key is private;
+    subtype Pressable_Key is range Character'Val(32) .. Character'Val(126);
+    function Create (Key : Pressable_Key) return Shortcut_Key;
+    No_Key : constant Shortcut_Key;
+
+
+    type Modifier_Key is private;
+    function "+" (Left, Right : in Modifier_Key) return Modifier_Key;
+    function "+" (Left : in Modifier_Key; Right : in Pressable_Key) return Shortcut_Key;
+    function "+" (Left : in Modifier_Key; Right : in Shortcut_Key) return Shortcut_Key;
+    Mod_None : constant Modifier_Key;
+    Mod_Ctrl : constant Modifier_Key;
+    Mod_Alt  : constant Modifier_Key;
+
+
+    type Menu_Flag is private;
+    function "+" (Left, Right : in Menu_Flag) return Menu_Flag;
+    Flag_Normal    : constant Menu_Flag;
+    Flag_Inactive  : constant Menu_Flag;
+    Flag_Toggle    : constant Menu_Flag;
+    Flag_Value     : constant Menu_Flag;
+    Flag_Radio     : constant Menu_Flag;
+    Flag_Invisible : constant Menu_Flag;
+    Flag_Submenu   : constant Menu_Flag;
+    Flag_Divider   : constant Menu_Flag;
 
 
     function Create
-           (Text : in String;
-            Shortcut : in Shortcut_Key;
-            Action : in FLTK.Callbacks.Callback;
-            Flags : in Menu_Flag)
+           (Text     : in String;
+            Action   : in FLTK.Callbacks.Callback;
+            Shortcut : in Shortcut_Key := No_Key;
+            Flags    : in Menu_Flag := Flag_Normal)
         return Menu_Item;
 
 
 private
 
 
+    type Shortcut_Key is
+        record
+            Modifier : Modifier_Key;
+            Keypress : Character;
+        end record;
+    No_Key : constant Shortcut_Key :=
+        (Modifer => Mod_None, Keypress => Character'Val(0));
+
+
+    type Modifier_Key is Interfaces.Unsigned_2;
+    Mod_None : constant Modifier_Key := 2#00#;
+    Mod_Ctrl : constant Modifier_Key := 2#01#;
+    Mod_Alt  : constant Modifier_Key := 2#10#;
+
+
+    type Menu_Flag is Interfaces.Unsigned_8;
+    Flag_Normal    : constant Menu_Flag := 2#00000000#;
+    Flag_Inactive  : constant Menu_Flag := 2#00000001#;
+    Flag_Toggle    : constant Menu_Flag := 2#00000010#;
+    Flag_Value     : constant Menu_Flag := 2#00000100#;
+    Flag_Radio     : constant Menu_Flag := 2#00001000#;
+    Flag_Invisible : constant Menu_Flag := 2#00010000#;
+    -- Flag_Submenu_Pointer is currently unused
+    Flag_Submenu   : constant Menu_Flag := 2#01000000#;
+    Flag_Divider   : constant Menu_Flag := 2#10000000#;
+
+
     type Menu_Item is new Wrapper with null record;