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-- Programmed by Jedidiah Barber
-- Released into the public domain
with
Interfaces.C,
System.Address_To_Access_Conversions;
package body FLTK.Widgets.Groups.Windows.Double.Cairo is
------------------------
-- Functions From C --
------------------------
function new_fl_cairo_window
(W, H : in Interfaces.C.int)
return Storage.Integer_Address;
pragma Import (C, new_fl_cairo_window, "new_fl_cairo_window");
pragma Inline (new_fl_cairo_window);
procedure free_fl_cairo_window
(W : in Storage.Integer_Address);
pragma Import (C, free_fl_cairo_window, "free_fl_cairo_window");
pragma Inline (free_fl_cairo_window);
procedure fl_cairo_window_set_draw_cb
(W, F : in Storage.Integer_Address);
pragma Import (C, fl_cairo_window_set_draw_cb, "fl_cairo_window_set_draw_cb");
pragma Inline (fl_cairo_window_set_draw_cb);
procedure fl_cairo_window_draw
(W : in Storage.Integer_Address);
pragma Import (C, fl_cairo_window_draw, "fl_cairo_window_draw");
pragma Inline (fl_cairo_window_draw);
function fl_cairo_window_handle
(W : in Storage.Integer_Address;
E : in Interfaces.C.int)
return Interfaces.C.int;
pragma Import (C, fl_cairo_window_handle, "fl_cairo_window_handle");
pragma Inline (fl_cairo_window_handle);
----------------------
-- Callback Hooks --
----------------------
package Cairo_Convert is new System.Address_To_Access_Conversions (Cairo_Window'Class);
procedure Cairo_Draw_Hook
(C_Addr, Cairo_Addr : in Storage.Integer_Address);
pragma Convention (C, Cairo_Draw_Hook);
procedure Cairo_Draw_Hook
(C_Addr, Cairo_Addr : in Storage.Integer_Address)
is
Ada_Addr : System.Address :=
Storage.To_Address (fl_widget_get_user_data (C_Addr));
Ada_Object : access Cairo_Window'Class :=
Cairo_Convert.To_Pointer (Ada_Addr);
begin
if Ada_Object.My_Func /= null then
Ada_Object.My_Func (Cairo_Window (Ada_Object.all), Storage.To_Address (Cairo_Addr));
end if;
end Cairo_Draw_Hook;
-------------------
-- Destructors --
-------------------
procedure Extra_Final
(This : in out Cairo_Window) is
begin
Extra_Final (Double_Window (This));
end Extra_Final;
procedure Finalize
(This : in out Cairo_Window) is
begin
Extra_Final (This);
if This.Void_Ptr /= Null_Pointer and This.Needs_Dealloc then
free_fl_cairo_window (This.Void_Ptr);
This.Void_Ptr := Null_Pointer;
end if;
end Finalize;
--------------------
-- Constructors --
--------------------
procedure Extra_Init
(This : in out Cairo_Window;
X, Y, W, H : in Integer;
Text : in String) is
begin
fl_cairo_window_set_draw_cb (This.Void_Ptr, Storage.To_Integer (Cairo_Draw_Hook'Address));
Extra_Init (Double_Window (This), X, Y, W, H, Text);
end Extra_Init;
procedure Initialize
(This : in out Cairo_Window) is
begin
This.Draw_Ptr := fl_cairo_window_draw'Address;
This.Handle_Ptr := fl_cairo_window_handle'Address;
end Initialize;
package body Forge is
function Create
(X, Y, W, H : in Integer;
Text : in String := "")
return Cairo_Window is
begin
return This : Cairo_Window do
This.Void_Ptr := new_fl_cairo_window
(Interfaces.C.int (W),
Interfaces.C.int (H));
This.Reposition (X, Y);
This.Set_Label (Text);
Extra_Init (This, X, Y, W, H, Text);
end return;
end Create;
function Create
(W, H : in Integer;
Text : in String := "")
return Cairo_Window is
begin
return This : Cairo_Window do
This.Void_Ptr := new_fl_cairo_window
(Interfaces.C.int (W),
Interfaces.C.int (H));
This.Set_Label (Text);
Extra_Init (This, This.Get_X, This.Get_Y, W, H, Text);
end return;
end Create;
function Create
(W, H : in Integer)
return Cairo_Window is
begin
return This : Cairo_Window do
This.Void_Ptr := new_fl_cairo_window
(Interfaces.C.int (W),
Interfaces.C.int (H));
Extra_Init (This, This.Get_X, This.Get_Y, W, H, This.Get_Label);
end return;
end Create;
end Forge;
------------------------
-- Cairo Window API --
------------------------
procedure Set_Cairo_Draw
(This : in out Cairo_Window;
Func : in Cairo_Callback) is
begin
This.My_Func := Func;
end Set_Cairo_Draw;
procedure Draw
(This : in out Cairo_Window) is
begin
Double_Window (This).Draw;
end Draw;
end FLTK.Widgets.Groups.Windows.Double.Cairo;
|
