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Diffstat (limited to 'spec/fltk-images.ads')
-rw-r--r-- | spec/fltk-images.ads | 237 |
1 files changed, 237 insertions, 0 deletions
diff --git a/spec/fltk-images.ads b/spec/fltk-images.ads new file mode 100644 index 0000000..9a02f23 --- /dev/null +++ b/spec/fltk-images.ads @@ -0,0 +1,237 @@ + + +-- Programmed by Jedidiah Barber +-- Released into the public domain + + +package FLTK.Images is + + + ------------- + -- Types -- + ------------- + + 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; + + + + + -------------------- + -- Construction -- + -------------------- + + package Forge is + + function Create + (Width, Height, Depth : in Natural) + return Image; + + end Forge; + + 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_Data + (This : in Image) + return Natural; + + function Get_Data_Count + (This : in Image) + return Natural; + + function Get_Data_Size + (This : in Image) + return Natural; + + + + + ------------------ + -- Pixel Data -- + ------------------ + + function Get_Datum + (This : in Image; + Data : in Positive; + Position : in Positive) + return Color_Component + with Pre => + Data <= Get_Data_Count (This) and + Position <= Get_Data_Size (This); + + procedure Set_Datum + (This : in out Image; + Data : in Positive; + Position : in Positive; + Value : in Color_Component) + with Pre => + Data <= Get_Data_Count (This) and + Position <= Get_Data_Size (This); + + function Get_Data + (This : in Image; + Data : in Positive; + Position : in Positive; + Count : in Natural) + return Color_Component_Array + with Pre => + Data <= Get_Data_Count (This) and + Position <= Get_Data_Size (This) and + Count <= Get_Data_Size (This) - Position + 1; + + function All_Data + (This : in Image; + Data : in Positive) + return Color_Component_Array + with Pre => + Data <= Get_Data_Count (This); + + procedure Update_Data + (This : in out Image; + Data : in Positive; + Position : in Positive; + Values : in Color_Component_Array) + with Pre => + Data <= Get_Data_Count (This) and + Position <= Get_Data_Size (This) and + Values'Length <= Get_Data_Size (This) - Position + 1; + + + + + --------------- + -- Drawing -- + --------------- + + procedure Draw + (This : in Image; + X, Y : in Integer); + + procedure Draw + (This : in Image; + X, Y, W, H : in Integer; + CX, CY : 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); + + + + + 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_Data); + pragma Inline (Get_Data_Count); + + + pragma Inline (Draw); + pragma Inline (Draw_Empty); + + + + + function fl_image_fail + (I : in Storage.Integer_Address) + return Interfaces.C.int; + pragma Import (C, fl_image_fail, "fl_image_fail"); + + +end FLTK.Images; + |