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-- Programmed by Jedidiah Barber
-- Released into the public domain
with
Ada.Strings.Unbounded;
private with
Interfaces.C.Strings;
package FLTK.Images.Pixmaps is
type Pixmap is new Image with private;
type Pixmap_Reference (Data : not null access Pixmap'Class) is limited null record
with Implicit_Dereference => Data;
type Header is record
Width, Height, Colors, Per_Pixel : Positive;
end record;
type Color_Kind is (Colorful, Monochrome, Greyscale, Symbolic);
type Color_Definition is record
Name : Ada.Strings.Unbounded.Unbounded_String;
Kind : Color_Kind;
Value : Ada.Strings.Unbounded.Unbounded_String;
end record;
type Color_Definition_Array is array (Positive range <>) of Color_Definition;
type Pixmap_Data is array (Positive range <>, Positive range <>) of Character;
package Forge is
-- Unlike Bitmaps or RGB_Images, you do NOT have to keep this data around.
-- A copy will be allocated and deallocated internally.
function Create
(Values : in Header;
Colors : in Color_Definition_Array;
Pixels : in Pixmap_Data)
return Pixmap
with Pre =>
Colors'Length = Values.Colors and
Pixels'Length (1) = Values.Height and
(for all Definition of Colors =>
Ada.Strings.Unbounded.Length (Definition.Name) = Values.Per_Pixel) and
Pixels'Length (2) = Values.Width * Values.Per_Pixel;
end Forge;
-- Copying --
function Copy
(This : in Pixmap;
Width, Height : in Natural)
return Pixmap'Class;
function Copy
(This : in Pixmap)
return Pixmap'Class;
-- Colors --
procedure Color_Average
(This : in out Pixmap;
Col : in Color;
Amount : in Blend);
procedure Desaturate
(This : in out Pixmap);
-- Activity --
procedure Uncache
(This : in out Pixmap);
-- Drawing --
procedure Draw
(This : in Pixmap;
X, Y : in Integer);
procedure Draw
(This : in Pixmap;
X, Y, W, H : in Integer;
Clip_X, Clip_Y : in Integer := 0);
private
type Pixmap is new Image with record
Loose_Ptr : access Interfaces.C.Strings.chars_ptr_array;
end record;
overriding procedure Finalize
(This : in out Pixmap);
pragma Inline (Color_Average);
pragma Inline (Desaturate);
pragma Inline (Uncache);
pragma Inline (Copy);
pragma Inline (Draw);
end FLTK.Images.Pixmaps;
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