blob: 6023f82b8a85b9a2358b29a3678187cce2d8ffd6 (
plain)
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
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
|
with
Interfaces.C,
System;
use type
System.Address;
package body FLTK.Images.RGB.PNG is
function new_fl_png_image
(F : in Interfaces.C.char_array)
return System.Address;
pragma Import (C, new_fl_png_image, "new_fl_png_image");
pragma Inline (new_fl_png_image);
function new_fl_png_image2
(N : in Interfaces.C.char_array;
D : in System.Address;
S : in Interfaces.C.int)
return System.Address;
pragma Import (C, new_fl_png_image2, "new_fl_png_image2");
pragma Inline (new_fl_png_image2);
procedure free_fl_png_image
(P : in System.Address);
pragma Import (C, free_fl_png_image, "free_fl_png_image");
pragma Inline (free_fl_png_image);
overriding procedure Finalize
(This : in out PNG_Image) is
begin
if This.Void_Ptr /= System.Null_Address and then
This in PNG_Image'Class
then
free_fl_png_image (This.Void_Ptr);
This.Void_Ptr := System.Null_Address;
end if;
Finalize (RGB_Image (This));
end Finalize;
--------------------
-- Construction --
--------------------
package body Forge is
function Create
(Filename : in String)
return PNG_Image is
begin
return This : PNG_Image do
This.Void_Ptr := new_fl_png_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;
function Create
(Name : in String := "";
Data : in Color_Component_Array)
return PNG_Image is
begin
return This : PNG_Image do
This.Void_Ptr := new_fl_png_image2
(Interfaces.C.To_C (Name),
Data (Data'First)'Address,
Data'Length);
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 Forge;
end FLTK.Images.RGB.PNG;
|
