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with FLTK.Enums; use FLTK.Enums;
with Interfaces.C;
with System;
use type System.Address;
use type Interfaces.C.int;
use type Interfaces.C.unsigned_long;
package body FLTK.Widgets.Menus is
function "+"
(Left, Right : in Menu_Flag)
return Menu_Flag is
begin
return Left or Right;
end "+";
procedure menu_set_draw_hook
(W, D : in System.Address);
pragma Import (C, menu_set_draw_hook, "menu_set_draw_hook");
function new_fl_menu
(X, Y, W, H : in Interfaces.C.int;
Text : in Interfaces.C.char_array)
return System.Address;
pragma Import (C, new_fl_menu, "new_fl_menu");
procedure free_fl_menu
(F : in System.Address);
pragma Import (C, free_fl_menu, "free_fl_menu");
function fl_menu_add
(M : in System.Address;
T : in Interfaces.C.char_array;
S : in Interfaces.C.unsigned_long;
C, U : in System.Address;
F : in Interfaces.C.unsigned_long)
return Interfaces.C.int;
pragma Import (C, fl_menu_add, "fl_menu_add");
function fl_menu_find_item
(M : in System.Address;
T : in Interfaces.C.char_array)
return System.Address;
pragma Import (C, fl_menu_find_item, "fl_menu_find_item");
function fl_menu_mvalue
(M : in System.Address)
return System.Address;
pragma Import (C, fl_menu_mvalue, "fl_menu_mvalue");
function fl_menuitem_value
(MI : in System.Address)
return Interfaces.C.int;
pragma Import (C, fl_menuitem_value, "fl_menuitem_value");
procedure fl_menuitem_activate
(MI : in System.Address);
pragma Import (C, fl_menuitem_activate, "fl_menuitem_activate");
procedure fl_menuitem_deactivate
(MI : in System.Address);
pragma Import (C, fl_menuitem_deactivate, "fl_menuitem_deactivate");
procedure Draw_Hook (U : in System.Address);
pragma Convention (C, Draw_Hook);
procedure Draw_Hook
(U : in System.Address)
is
package Menu_Convert is new System.Address_To_Access_Conversions (Menu'Class);
Ada_Menu : access Menu'Class :=
Menu_Convert.To_Pointer (U);
begin
Ada_Menu.Draw;
end Draw_Hook;
procedure Finalize
(This : in out Menu) is
begin
if This.Void_Ptr /= System.Null_Address and then
This in Menu'Class
then
free_fl_menu (This.Void_Ptr);
This.Void_Ptr := System.Null_Address;
end if;
Finalize (Widget (This));
end Finalize;
function Create
(X, Y, W, H : in Integer;
Text : in String)
return Menu is
begin
return This : Menu do
This.Void_Ptr := new_fl_menu
(Interfaces.C.int (X),
Interfaces.C.int (Y),
Interfaces.C.int (W),
Interfaces.C.int (H),
Interfaces.C.To_C (Text));
fl_widget_set_user_data
(This.Void_Ptr,
Widget_Convert.To_Address (This'Unchecked_Access));
menu_set_draw_hook (This.Void_Ptr, Draw_Hook'Address);
end return;
end Create;
procedure Item_Hook (M, U : in System.Address);
pragma Convention (C, Item_Hook);
procedure Item_Hook
(M, U : in System.Address)
is
Ada_Widget : access Widget'Class :=
Widget_Convert.To_Pointer (fl_widget_get_user_data (M));
Action : Widget_Callback := Callback_Convert.To_Pointer (U);
begin
Action.all (Ada_Widget.all);
end Item_Hook;
procedure Add
(This : in out Menu;
Text : in String;
Action : in Widget_Callback := null;
Shortcut : in Shortcut_Key := No_Key;
Flags : in Menu_Flag := Flag_Normal)
is
Place : Interfaces.C.int;
Callback, User_Data : System.Address;
begin
if Action = null then
Callback := System.Null_Address;
User_Data := System.Null_Address;
else
Callback := Item_Hook'Address;
User_Data := Callback_Convert.To_Address (Action);
end if;
Place := fl_menu_add
(This.Void_Ptr,
Interfaces.C.To_C (Text),
Key_To_C (Shortcut),
Callback,
User_Data,
Interfaces.C.unsigned_long (Flags));
end Add;
function Find_Item
(This : in Menu'Class;
Name : in String)
return Menu_Item is
begin
return Item : Menu_Item do
Item.Void_Ptr := fl_menu_find_item
(This.Void_Ptr,
Interfaces.C.To_C (Name));
end return;
end Find_Item;
function Chosen
(This : in Menu'Class)
return Menu_Item is
begin
return Item : Menu_Item do
Item.Void_Ptr := fl_menu_mvalue (This.Void_Ptr);
end return;
end Chosen;
function Value
(Item : in Menu_Item)
return Boolean is
begin
return fl_menuitem_value (Item.Void_Ptr) /= 0;
end Value;
procedure Activate
(Item : in Menu_Item) is
begin
fl_menuitem_activate (Item.Void_Ptr);
end Activate;
procedure Deactivate
(Item : in Menu_Item) is
begin
fl_menuitem_deactivate (Item.Void_Ptr);
end Deactivate;
end FLTK.Widgets.Menus;
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