/*
 * Image.h -- Image support routines.
 *
 * Authors              : Patrick LECOANET
 * Creation date        : Wed Dec  8 11:04:44 1999
 *
 * $Id$
 */

/*
 *  Copyright (c) 1999 - 2005 CENA, Patrick Lecoanet --
 *
 * See the file "Copyright" for information on usage and redistribution
 * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
 *
 */


#ifndef _Image_h
#define _Image_h

#include "Types.h"

struct _ZnWInfo;


typedef void    *ZnImage;

#define ZnGetBitmapPixel(bits, stride, x, y)\
  (((bits)[(y)*(stride)+((x)>>3)]<<((x)&7))&0x80)

int To2Power(int a);
ZnImage ZnGetImage(struct _ZnWInfo *wi, Tk_Uid image_name,
                   void (*inv_proc)(void *cd), void *cd);
ZnImage ZnGetImageByValue(ZnImage image, void (*inv_proc)(void *cd), void *cd);
void ZnFreeImage(ZnImage image, void (*inv_proc)(void *cd), void *cd);
char * ZnNameOfImage(ZnImage image);
void ZnSizeOfImage(ZnImage image, int *width, int *height);
Pixmap ZnImagePixmap(ZnImage image, Tk_Window win);
ZnBool ZnImageIsBitmap(ZnImage image);
TkRegion ZnImageRegion(ZnImage image);
Tk_Image ZnImageTkImage(ZnImage image);
Tk_PhotoHandle ZnImageTkPhoto(ZnImage image);
ZnBool
ZnPointInImage(ZnImage image, int x, int y);
#ifdef GL
GLuint ZnImageTex(ZnImage image, ZnReal *t, ZnReal *s);

typedef struct _ZnTexGlyphVertexInfo {
  GLfloat       t0x;
  GLfloat       t0y;
  GLshort       v0x;
  GLshort       v0y;
  GLfloat       t1x;
  GLfloat       t1y;
  GLshort       v1x;
  GLshort       v1y;
  GLfloat       advance;
  int           code;
} ZnTexGVI;


typedef void    *ZnTexFontInfo;

ZnTexFontInfo ZnGetTexFont(struct _ZnWInfo *wi, Tk_Font font);
void ZnFreeTexFont(ZnTexFontInfo tfi);
ZnTexGVI *ZnTexFontGVI(ZnTexFontInfo tfi, int c);
int ZnGetFontIndex(ZnTexFontInfo tfi, int c);
GLuint ZnTexFontTex(ZnTexFontInfo tfi);
void ZnGetDeferredGLGlyphs(void);
#endif

#endif  /* _Image_h */