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colourtran
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1992-04-30
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(*
* Title: colourtran.h
* Purpose: C interface to the ColourTrans SWIs
*
*)
#ifndef __colourtran_h
#define __colourtran_h
#ifndef __os_h
#include "os.h"
#endif
#ifndef __wimp_h
#include "wimp.h"
#endif
#ifndef __font_h
#include "font.h"
#endif
(* ----------------------- colourtran_select_table -------------------------
* Description: Sets up a translation table in a buffer, given a source
* mode and palette, and a destination mode and palette.
*
* Parameters: int source_mode -- source mode
* wimp_paletteword *source_palette -- source palette
* int dest_mode -- destination mode
* wimp_paletteword *dest_palette -- destination palette
* void *buffer -- pointer to store for the table.
* Returns: possible error condition.
* Other Info: none.
*
*)
procedure colourtran_select_table(source_mode : integer;
source_palette : wimp_paletteword_ptr;
dest_mode : integer;
dest_palette : wimp_paletteword_ptr;
buffer : pointer) : error; extern;
(* ---------------------- colourtran_select_GCOLtable ----------------------
* Description: Sets up a list of GCOLs in a buffer, given a source
* mode and palette, and a destination mode and palette.
*
* Parameters: int source_mode -- source mode
* wimp_paletteword *source_palette -- source palette
* int dest_mode -- destination mode
* wimp_paletteword *dest_palette -- destination palette
* void *buffer -- pointer to store for the list of GCOLs.
* Returns: possible error condition.
* Other Info: none.
*
*)
procedure colourtran_select_GCOLtable(source_mode : integer;
source_palette : wimp_paletteword_ptr;
dest_mode : integer;
dest_palette : wimp_paletteword_ptr;
buffer : pointer) : error; extern;
(* ------------------------- colourtran_returnGCOL -------------------------
* Description: Informs caller of the closest GCOL in the current mode
* to a given palette entry.
*
* Parameters: wimp_paletteword entry -- the palette entry
* int *gcol -- returned GCOL value.
* Returns: possible error condition.
* Other Info: none.
*
*)
procedure colourtran_returnGCOL(entry : wimp_paletteword;
var gcol : integer) : error; extern;
(* ------------------------ colourtran_setGCOL -----------------------------
* Description: Informs caller of the closest GCOL in the current mode
* to a given palette entry, and also sets the GCOL.
*
* Parameters: wimp_paletteword entry -- the palette entry
* int fore_back -- set to 0 for foreground,
* set to 128 for background
* int gcol_in -- GCOL action
* int *gcol_out -- returned closest GCOL.
* Returns: possible error condition.
* Other Info: none.
*
*)
procedure colourtran_setGCOL(entry : wimp_paletteword;
fore_back : integer;
gcol_in : integer;
var gcol_out : integer) : error; extern;
(* ---------------------- colourtran_return_colournumber -------------------
* Description: Informs caller of the closeset colour number to a given
* palette entry, in the current mode and palette
*
* Parameters: wimp_paletteword entry -- the palette entry
* int *col -- returned colour number.
* Returns: possible error condition.
* Other Info: none.
*
*)
procedure colourtran_return_colournumber(entry : wimp_paletteword;
var gcol : integer) : error; extern;
(* --------------------- colourtran_return_GCOLformode ---------------------
* Description: Informs caller of the closest GCOL to a given palette
* entry, destination mode and destination palette.
*
* Parameters: wimp_paletteword entry -- the palette entry
* int dest_mode -- destination mode
* wimp_paletteword *dest_palette -- destination palette
* int *gcol -- returned closest GCOL.
* Returns: possible error condition.
* Other Info: none.
*
*)
procedure colourtran_return_GCOLformode(entry : wimp_paletteword;
dest_mode : integer;
dest_palette : wimp_paletteword_ptr;
var gcol : integer) : error; extern;
(* ------------------ colourtran_return_colourformode ----------------------
* Description: Informs caller of the closest colour number to a given
* palette entry, destination mode and destination palette.
*
* Parameters: wimp_paletteword entry -- the palette entry
* int dest_mode -- destination mode
* wimp_paletteword *dest_palette -- destination palette
* int *col -- returned closest colour number.
* Returns: possible error condition.
* Other Info: none.
*
*)
procedure colourtran_return_colourformode(entry : wimp_paletteword;
dest_mode : integer;
dest_palette : wimp_paletteword_ptr;
var col : integer) : error; extern;
(* ----------------------- colourtran_return_OppGCOL -----------------------
* Description: Informs caller of the furthest GCOL in the current mode
* from a given palette entry.
*
* Parameters: wimp_paletteword entry -- the palette entry
* int *gcol -- returned GCOL value.
* Returns: possible error condition.
* Other Info: none.
*
*)
procedure colourtran_return_OppGCOL(entry : wimp_paletteword;
var gcol : integer) : error; extern;
(* ------------------------ colourtran_setOppGCOL --------------------------
* Description: Informs caller of the furthest GCOL in the current mode
* from a given palette entry, and also sets the GCOL.
*
* Parameters: wimp_paletteword entry -- the palette entry
* int fore_back -- set to 0 for foreground,
* set to 128 for background
* int gcol_in -- GCOL action
* int *gcol_out -- returned furthest GCOL.
* Returns: possible error condition.
* Other Info: none.
*
*)
procedure colourtran_setOppGCOL(entry : wimp_paletteword;
fore_back : integer;
gcol_in : integer;
var gcol_out : integer) : error; extern;
(* ---------------------- colourtran_return_Oppcolournumber ----------------
* Description: Informs caller of the furthest colour number from a given
* palette entry, in the current mode and palette
*
* Parameters: wimp_paletteword -- the palette entry
* int *col -- returned colour number.
* Returns: possible error condition.
* Other Info: none.
*
*)
procedure colourtran_return_Oppcolournumber(entry : wimp_paletteword;
var col : integer) : error; extern;
(* --------------------- colourtran_return_OppGCOLformode ------------------
* Description: Informs caller of the furthest GCOL from a given palette
* entry, destination mode and destination palette.
*
* Parameters: wimp_paletteword entry -- the palette entry
* int dest_mode -- destination mode
* wimp_paletteword *dest_palette -- destination palette
* int *gcol -- returned furthest GCOL.
* Returns: possible error condition.
* Other Info: none.
*
*)
procedure colourtran_return_OppGCOLformode(entry : wimp_paletteword;
dest_mode : integer;
dest_palette : wimp_paletteword_ptr;
var gcol : integer) : error; extern;
(* ------------------ colourtran_return_Oppcolourformode -------------------
* Description: Informs caller of the furthest colour number from a given
* palette entry, destination mode and destination palette.
*
* Parameters: wimp_paletteword entry -- the palette entry
* int dest_mode -- destination mode
* wimp_paletteword *dest_palette -- destination palette
* int *col -- returned furthest colour number.
* Returns: possible error condition.
* Other Info: none.
*
*)
procedure colourtran_return_Oppcolourformode(entry : wimp_paletteword;
dest_mode : integer;
dest_palette : wimp_paletteword_ptr;
var col : integer) : error; extern;
(* ---------------------- colourtran_GCOL_tocolournumber -------------------
* Description: Translates a GCOL to a colournumber (assuming 256-colour
* mode).
*
* Parameters: int gcol -- the GCOL
* int *col -- returned colour number.
* Returns: possible error condition.
* Other Info: none.
*
*)
procedure colourtran_GCOL_tocolournumber(gcol : integer;
var col : integer) : error; extern;
(* ----------------- colourtran_colournumbertoGCOL -------------------------
* Description: Translates a colour number to a GCOL (assuming 256-colour
* mode).
*
* Parameters: int col -- the colour number
* int *gcol -- the returned GCOL.
* Returns: possible error condition.
* Other Info: none.
*
*)
procedure colourtran_colournumbertoGCOL(col : integer;
var gcol : integer) : error; extern;
(* ------------------ colourtran_returnfontcolours -------------------------
* Description: Informs caller of font colours to match given colours.
*
* Parameters: font *handle -- the font's handle
* wimp_paletteword *backgnd -- background palette entry
* wimp_paletteword *foregnd -- foreground palette entry
* int *max_offset
* Returns: possible error condition.
* Other Info: Closest approximations to fore/background colours will be
* set, and as many intermediate colours as possible (up to
* a maximum of *max_offset). Values are returned through
* the parameters.
*
*)
procedure colourtran_returnfontcolours(var handle : font;
backgnd, foregnd : wimp_paletteword_ptr;
var max_offset : integer) : error; extern;
(* -------------------- colourtran_setfontcolours --------------------------
* Description: Informs caller of font colours to match given colours, and
* calls font_setfontcolour() to set them.
*
* Parameters: font *handle -- the font's handle
* wimp_paletteword *backgnd -- background palette entry
* wimp_paletteword *foregnd -- foreground palette entry
* int *max_offset
* Returns: possible error condition.
* Other Info: Closest approximations to fore/background colours will be
* set, and as many intermediate colours as possible (up to
* a maximum of *max_offset). Values are returned through
* the parameters. Font_setfontcolours() is then called with
* these as parameters.
*
*)
procedure colourtran_setfontcolours(var handle : font;
backgnd, foregnd : wimp_paletteword_ptr;
var max_offset : integer) : error; extern;
(* ----------------------- colourtran_invalidate_cache ---------------------
* Description: To be called when the palette has changed since a call was
* last made to a function in this module.
*
* Parameters: void.
* Returns: possible error condition.
* Other Info: none.
*
*)
procedure colourtran_invalidate_cache : error; extern;
(* new SWIs *)
(* ----------------------- colourtran_convert_device_colour ----------------
* Description: Convert from a device colour to a standard RGB colour
*
* Parameters: wimp_paletteword device colour
wimp_paletteword *rgb colour
* Returns: possible error condition.
* Other Info: Uses the current calibration to convert from a device
* colour to a standard RGB palette entry
*
*)
procedure colourtran_convert_device_colour(device : wimp_paletteword;
rgb : wimp_paletteword_ptr) : error; extern;
#endif
(* end colourtran.h *)