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-- Programmed by Jedidiah Barber
-- Released into the public domain
package FLTK.Images is
type Image is new Wrapper with private;
type Image_Reference (Data : not null access Image'Class) is limited null record
with Implicit_Dereference => Data;
type Scaling_Kind is (Nearest, Bilinear);
type Blend is new Float range 0.0 .. 1.0;
No_Image_Error, File_Access_Error, Format_Error : exception;
package Forge is
-- This creates an empty image with no data, so not that useful.
function Create
(Width, Height, Depth : in Natural)
return Image;
end Forge;
-- Copying --
function Get_Copy_Algorithm
return Scaling_Kind;
procedure Set_Copy_Algorithm
(To : in Scaling_Kind);
function Copy
(This : in Image;
Width, Height : in Natural)
return Image'Class;
function Copy
(This : in Image)
return Image'Class;
-- Colors --
procedure Color_Average
(This : in out Image;
Col : in Color;
Amount : in Blend);
procedure Desaturate
(This : in out Image);
-- Activity --
procedure Inactive
(This : in out Image);
function Is_Empty
(This : in Image)
return Boolean;
procedure Uncache
(This : in out Image);
-- Dimensions --
function Get_W
(This : in Image)
return Natural;
function Get_H
(This : in Image)
return Natural;
function Get_D
(This : in Image)
return Natural;
function Get_Line_Size
(This : in Image)
return Natural;
-- Drawing --
procedure Draw
(This : in Image;
X, Y : in Integer);
procedure Draw
(This : in Image;
X, Y, W, H : in Integer;
Clip_X, Clip_Y : in Integer := 0);
procedure Draw_Empty
(This : in Image;
X, Y : in Integer);
private
type Image is new Wrapper with null record;
overriding procedure Finalize
(This : in out Image);
procedure Raise_Fail_Errors
(This : in Image'Class);
function fl_image_data
(I : in Storage.Integer_Address)
return Storage.Integer_Address;
pragma Import (C, fl_image_data, "fl_image_data");
pragma Inline (fl_image_data);
function fl_image_count
(I : in Storage.Integer_Address)
return Interfaces.C.int;
pragma Import (C, fl_image_count, "fl_image_count");
pragma Inline (fl_image_count);
pragma Inline (Get_Copy_Algorithm);
pragma Inline (Set_Copy_Algorithm);
pragma Inline (Copy);
pragma Inline (Color_Average);
pragma Inline (Desaturate);
pragma Inline (Inactive);
pragma Inline (Is_Empty);
pragma Inline (Uncache);
pragma Inline (Get_W);
pragma Inline (Get_H);
pragma Inline (Get_D);
pragma Inline (Get_Line_Size);
pragma Inline (Draw);
pragma Inline (Draw_Empty);
end FLTK.Images;
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