src/fltk-images-bitmaps-xbm.adb


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65


with

    Interfaces.C,
    System;

use type

    System.Address;


package body FLTK.Images.Bitmaps.XBM is


    function new_fl_xbm_image
           (F : in Interfaces.C.char_array)
        return System.Address;
    pragma Import (C, new_fl_xbm_image, "new_fl_xbm_image");

    procedure free_fl_xbm_image
           (P : in System.Address);
    pragma Import (C, free_fl_xbm_image, "free_fl_xbm_image");


    overriding procedure Finalize
           (This : in out XBM_Image) is
    begin
        if  This.Void_Ptr /= System.Null_Address and then
            This in XBM_Image'Class
        then
            free_fl_xbm_image (This.Void_Ptr);
            This.Void_Ptr := System.Null_Address;
        end if;
        Finalize (Bitmap (This));
    end Finalize;


    function Create
           (Filename : in String)
        return XBM_Image is
    begin
        return This : XBM_Image do
            This.Void_Ptr := new_fl_xbm_image
                   (Interfaces.C.To_C (Filename));
            case fl_image_fail (This.Void_Ptr) is
                when 1 =>
                    raise No_Image_Error;
                when 2 =>
                    raise File_Access_Error;
                when 3 =>
                    raise Format_Error;
                when others =>
                    null;
            end case;
        end return;
    end Create;


end FLTK.Images.Bitmaps.XBM;