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with
Interfaces.C,
System;
use type
Interfaces.C.unsigned_long,
System.Address;
package body FLTK is
function fl_run return Interfaces.C.int;
pragma Import (C, fl_run, "fl_run");
function Run
return Integer is
begin
return Integer (fl_run);
end Run;
function Has_Valid_Ptr
(This : in Wrapper)
return Boolean is
begin
return This.Void_Ptr /= System.Null_Address;
end Has_Valid_Ptr;
procedure Initialize
(This : in out Wrapper) is
begin
This.Void_Ptr := System.Null_Address;
end Initialize;
function Press
(Key : in Pressable_Key)
return Keypress is
begin
return Character'Pos (Key);
end Press;
function Press
(Key : Pressable_Key)
return Key_Combo is
begin
return This : Key_Combo do
This.Modcode := Mod_None;
This.Keycode := Character'Pos (Key);
This.Mousecode := No_Button;
end return;
end Press;
function Press
(Key : in Keypress)
return Key_Combo is
begin
return This : Key_Combo do
This.Modcode := Mod_None;
This.Keycode := Key;
This.Mousecode := No_Button;
end return;
end Press;
function Press
(Key : in Mouse_Button)
return Key_Combo is
begin
return This : Key_Combo do
This.Modcode := Mod_None;
This.Keycode := 0;
This.Mousecode := Key;
end return;
end Press;
function "+"
(Left, Right : in Modifier)
return Modifier is
begin
return Left or Right;
end "+";
function "+"
(Left : in Modifier;
Right : in Pressable_Key)
return Key_Combo is
begin
return This : Key_Combo do
This.Modcode := Left;
This.Keycode := Character'Pos (Right);
This.Mousecode := No_Button;
end return;
end "+";
function "+"
(Left : in Modifier;
Right : in Keypress)
return Key_Combo is
begin
return This : Key_Combo do
This.Modcode := Left;
This.Keycode := Right;
This.Mousecode := No_Button;
end return;
end "+";
function "+"
(Left : in Modifier;
Right : in Mouse_Button)
return Key_Combo is
begin
return This : Key_Combo do
This.Modcode := Left;
This.Keycode := 0;
This.Mousecode := Right;
end return;
end "+";
function "+"
(Left : in Modifier;
Right : in Key_Combo)
return Key_Combo is
begin
return This : Key_Combo do
This.Modcode := Left or Right.Modcode;
This.Keycode := Right.Keycode;
This.Mousecode := Right.Mousecode;
end return;
end "+";
function To_C
(Key : in Key_Combo)
return Interfaces.C.unsigned_long is
begin
return To_C (Key.Modcode) + To_C (Key.Keycode) + To_C (Key.Mousecode);
end To_C;
function To_Ada
(Key : in Interfaces.C.unsigned_long)
return Key_Combo is
begin
return Result : Key_Combo do
Result.Modcode := To_Ada (Key);
Result.Keycode := To_Ada (Key);
Result.Mousecode := To_Ada (Key);
end return;
end To_Ada;
function To_C
(Key : in Keypress)
return Interfaces.C.unsigned_long is
begin
return Interfaces.C.unsigned_long (Key);
end To_C;
function To_Ada
(Key : in Interfaces.C.unsigned_long)
return Keypress is
begin
return Keypress (Key mod 65536);
end To_Ada;
function To_C
(Modi : in Modifier)
return Interfaces.C.unsigned_long is
begin
return Interfaces.C.unsigned_long (Modi) * 65536;
end To_C;
function To_Ada
(Modi : in Interfaces.C.unsigned_long)
return Modifier is
begin
return Modifier ((Modi / 65536) mod 256);
end To_Ada;
function To_C
(Button : in Mouse_Button)
return Interfaces.C.unsigned_long is
begin
case Button is
when Left_Button => return 1 * (256 ** 3);
when Middle_Button => return 2 * (256 ** 3);
when Right_Button => return 4 * (256 ** 3);
when others => return 0;
end case;
end To_C;
function To_Ada
(Button : in Interfaces.C.unsigned_long)
return Mouse_Button is
begin
case (Button / (256 ** 3)) is
when 1 => return Left_Button;
when 2 => return Middle_Button;
when 4 => return Right_Button;
when others => return No_Button;
end case;
end To_Ada;
end FLTK;
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