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with
Interfaces.C,
System;
use type
System.Address;
package body FLTK.Images.Bitmaps is
function new_fl_bitmap
(D : in System.Address;
W, H : in Interfaces.C.int)
return System.Address;
pragma Import (C, new_fl_bitmap, "new_fl_bitmap");
pragma Inline (new_fl_bitmap);
procedure free_fl_bitmap
(I : in System.Address);
pragma Import (C, free_fl_bitmap, "free_fl_bitmap");
pragma Inline (free_fl_bitmap);
function fl_bitmap_copy
(I : in System.Address;
W, H : in Interfaces.C.int)
return System.Address;
pragma Import (C, fl_bitmap_copy, "fl_bitmap_copy");
pragma Inline (fl_bitmap_copy);
function fl_bitmap_copy2
(I : in System.Address)
return System.Address;
pragma Import (C, fl_bitmap_copy2, "fl_bitmap_copy2");
pragma Inline (fl_bitmap_copy2);
procedure fl_bitmap_uncache
(I : in System.Address);
pragma Import (C, fl_bitmap_uncache, "fl_bitmap_uncache");
pragma Inline (fl_bitmap_uncache);
procedure fl_bitmap_draw2
(I : in System.Address;
X, Y : in Interfaces.C.int);
pragma Import (C, fl_bitmap_draw2, "fl_bitmap_draw2");
pragma Inline (fl_bitmap_draw2);
procedure fl_bitmap_draw
(I : in System.Address;
X, Y, W, H, CX, CY : in Interfaces.C.int);
pragma Import (C, fl_bitmap_draw, "fl_bitmap_draw");
pragma Inline (fl_bitmap_draw);
overriding procedure Finalize
(This : in out Bitmap) is
begin
if This.Void_Ptr /= System.Null_Address and then
This in Bitmap'Class
then
free_fl_bitmap (This.Void_Ptr);
This.Void_Ptr := System.Null_Address;
end if;
Finalize (Image (This));
end Finalize;
--------------------
-- Construction --
--------------------
package body Forge is
function Create
(Data : in Color_Component_Array;
Width, Height : in Natural)
return Bitmap is
begin
return This : Bitmap do
This.Void_Ptr := new_fl_bitmap
(Data (Data'First)'Address,
Interfaces.C.int (Width),
Interfaces.C.int (Height));
case fl_image_fail (This.Void_Ptr) is
when 1 =>
-- raise No_Image_Error;
null;
-- Since the image depth and line data are both zero here,
-- the fail method will think there's no image even though
-- nothing is wrong. This is a bug in FLTK.
when 2 => raise File_Access_Error;
when 3 => raise Format_Error;
when others => null;
end case;
end return;
end Create;
end Forge;
function Copy
(This : in Bitmap;
Width, Height : in Natural)
return Bitmap'Class is
begin
return Copied : Bitmap do
Copied.Void_Ptr := fl_bitmap_copy
(This.Void_Ptr,
Interfaces.C.int (Width),
Interfaces.C.int (Height));
end return;
end Copy;
function Copy
(This : in Bitmap)
return Bitmap'Class is
begin
return Copied : Bitmap do
Copied.Void_Ptr := fl_bitmap_copy2 (This.Void_Ptr);
end return;
end Copy;
----------------
-- Activity --
----------------
procedure Uncache
(This : in out Bitmap) is
begin
fl_bitmap_uncache (This.Void_Ptr);
end Uncache;
---------------
-- Drawing --
---------------
procedure Draw
(This : in Bitmap;
X, Y : in Integer) is
begin
fl_bitmap_draw2
(This.Void_Ptr,
Interfaces.C.int (X),
Interfaces.C.int (Y));
end Draw;
procedure Draw
(This : in Bitmap;
X, Y, W, H : in Integer;
CX, CY : in Integer := 0) is
begin
fl_bitmap_draw
(This.Void_Ptr,
Interfaces.C.int (X),
Interfaces.C.int (Y),
Interfaces.C.int (W),
Interfaces.C.int (H),
Interfaces.C.int (CX),
Interfaces.C.int (CY));
end Draw;
end FLTK.Images.Bitmaps;
|
