#ifndef GD_H
#define GD_H 1

/* gd.h: declarations file for the graphic-draw module.
 * Permission to use, copy, modify, and distribute this software and its
 * documentation for any purpose and without fee is hereby granted, provided
 * that the above copyright notice appear in all copies and that both that
 * copyright notice and this permission notice appear in supporting
 * documentation.  This software is provided "AS IS." Thomas Boutell and
 * Boutell.Com, Inc. disclaim all warranties, either express or implied, 
 * including but not limited to implied warranties of merchantability and 
 * fitness for a particular purpose, with respect to this code and accompanying
 * documentation. */

/* stdio is needed for file I/O. */
#include <stdio.h>
#include "gd_io.h"

/* This can't be changed in the current palette-only version of gd. */

#define gdMaxColors 256

/* Image type. See functions below; you will not need to change
	the elements directly. Use the provided macros to
	access sx, sy, the color table, and colorsTotal for 
	read-only purposes. */

typedef struct gdImageStruct {
	unsigned char ** pixels;
	int sx;
	int sy;
	int colorsTotal;
	int red[gdMaxColors];
	int green[gdMaxColors];
	int blue[gdMaxColors]; 
	int open[gdMaxColors];
	int transparent;
	int *polyInts;
	int polyAllocated;
	struct gdImageStruct *brush;
	struct gdImageStruct *tile;	
	int brushColorMap[gdMaxColors];
	int tileColorMap[gdMaxColors];
	int styleLength;
	int stylePos;
	int *style;
	int interlace;
} gdImage;

typedef gdImage * gdImagePtr;

void gdImageSetPixel(gdImagePtr im, int x, int y, int color);
int gdImageGetPixel(gdImagePtr im, int x, int y);
void gdImageLine(gdImagePtr im, int x1, int y1, int x2, int y2, int color);
void gdImageFilledRectangle(gdImagePtr im, int x1, int y1, int x2, int y2, int color);
int gdImageBoundsSafe(gdImagePtr im, int x, int y);

gdImagePtr gdImageCreate(int sx, int sy);
int gdImageColorAllocate(gdImagePtr im, int r, int g, int b);
void gdImageColorTransparent(gdImagePtr im, int color);
void gdImagePng(gdImagePtr im, FILE *out);
void gdImagePngCtx(gdImagePtr im, gdIOCtx *out);
void gdImageGif(gdImagePtr im, FILE *out);

void* gdImagePngPtr(gdImagePtr im, int *size);
void* gdImageGifPtr(gdImagePtr im, int *size);

/* Macros to access information about images. READ ONLY. Changing
	these values will NOT have the desired result. */
#define gdImageSX(im) ((im)->sx)
#define gdImageSY(im) ((im)->sy)
#define gdImageColorsTotal(im) ((im)->colorsTotal)
#define gdImageRed(im, c) ((im)->red[(c)])
#define gdImageGreen(im, c) ((im)->green[(c)])
#define gdImageBlue(im, c) ((im)->blue[(c)])
#define gdImageGetTransparent(im) ((im)->transparent)
#define gdImageGetInterlaced(im) ((im)->interlace)

/* I/O Support routines. */

gdIOCtx* gdNewFileCtx(FILE*);
gdIOCtx* gdNewDynamicCtx(int, void*);
void* gdDPExtractData(struct gdIOCtx* ctx, int *size);

#endif