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xpm.h

/*
 * Copyright (C) 1989-95 GROUPE BULL
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to
 * deal in the Software without restriction, including without limitation the
 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
 * sell copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 * GROUPE BULL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 *
 * Except as contained in this notice, the name of GROUPE BULL shall not be
 * used in advertising or otherwise to promote the sale, use or other dealings
 * in this Software without prior written authorization from GROUPE BULL.
 */

/*****************************************************************************\
* xpm.h:                                                                      *
*                                                                             *
*  XPM library                                                                *
*  Include file                                                               *
*                                                                             *
*  Developed by Arnaud Le Hors                                                *
\*****************************************************************************/

/*
 * The code related to FOR_MSW has been added by
 * HeDu (hedu@cul-ipn.uni-kiel.de) 4/94
 */

#ifndef XPM_h
#define XPM_h

/*
 * first some identification numbers:
 * the version and revision numbers are determined with the following rule:
 * SO Major number = LIB minor version number.
 * SO Minor number = LIB sub-minor version number.
 * e.g: Xpm version 3.2f
 *      we forget the 3 which is the format number, 2 gives 2, and f gives 6.
 *      thus we have XpmVersion = 2 and XpmRevision = 6
 *      which gives  SOXPMLIBREV = 2.6
 *
 * Then the XpmIncludeVersion number is built from these numbers.
 */
#define XpmFormat 3
#define XpmVersion 4
#define XpmRevision 7
#define XpmIncludeVersion ((XpmFormat * 100 + XpmVersion) * 100 + XpmRevision)

#ifndef XPM_NUMBERS

#ifdef FOR_MSW
#define SYSV                  /* uses memcpy string.h etc. */
#include <malloc.h>
#include "simx.h"       /* defines some X stuff using MSW types */
#define NEED_STRCASECMP       /* at least for MSVC++ */
#else /* FOR_MSW */
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#endif /* FOR_MSW */

/* let's define Pixel if it is not done yet */
#if ! defined(_XtIntrinsic_h) && ! defined(PIXEL_ALREADY_TYPEDEFED)
typedef unsigned long Pixel;  /* Index into colormap */
#define PIXEL_ALREADY_TYPEDEFED
#endif

/* Return ErrorStatus codes:
 * null     if full success
 * positive if partial success
 * negative if failure
 */

#define XpmColorError    1
#define XpmSuccess       0
#define XpmOpenFailed   -1
#define XpmFileInvalid  -2
#define XpmNoMemory     -3
#define XpmColorFailed  -4

/* the following should help people wanting to use their own functions */
#define XpmFree(ptr) free(ptr)

typedef struct {
    char *name;               /* Symbolic color name */
    char *value;        /* Color value */
    Pixel pixel;        /* Color pixel */
}      XpmColorSymbol;

typedef struct {
    char *name;               /* name of the extension */
    unsigned int nlines;      /* number of lines in this extension */
    char **lines;       /* pointer to the extension array of strings */
}      XpmExtension;

typedef struct {
    char *string;       /* characters string */
    char *symbolic;           /* symbolic name */
    char *m_color;            /* monochrom default */
    char *g4_color;           /* 4 level grayscale default */
    char *g_color;            /* other level grayscale default */
    char *c_color;            /* color default */
}      XpmColor;

typedef struct {
    unsigned int width;       /* image width */
    unsigned int height;      /* image height */
    unsigned int cpp;         /* number of characters per pixel */
    unsigned int ncolors;     /* number of colors */
    XpmColor *colorTable;     /* list of related colors */
    unsigned int *data;       /* image data */
}      XpmImage;

typedef struct {
    unsigned long valuemask;  /* Specifies which attributes are defined */
    char *hints_cmt;          /* Comment of the hints section */
    char *colors_cmt;         /* Comment of the colors section */
    char *pixels_cmt;         /* Comment of the pixels section */
    unsigned int x_hotspot;   /* Returns the x hotspot's coordinate */
    unsigned int y_hotspot;   /* Returns the y hotspot's coordinate */
    unsigned int nextensions; /* number of extensions */
    XpmExtension *extensions; /* pointer to array of extensions */
}      XpmInfo;

typedef struct {
    unsigned long valuemask;        /* Specifies which attributes are
                               * defined */

    Visual *visual;                 /* Specifies the visual to use */
    Colormap colormap;              /* Specifies the colormap to use */
    unsigned int depth;             /* Specifies the depth */
    unsigned int width;             /* Returns the width of the created
                               * pixmap */
    unsigned int height;            /* Returns the height of the created
                               * pixmap */
    unsigned int x_hotspot;         /* Returns the x hotspot's
                               * coordinate */
    unsigned int y_hotspot;         /* Returns the y hotspot's
                               * coordinate */
    unsigned int cpp;               /* Specifies the number of char per
                               * pixel */
    Pixel *pixels;                  /* List of used color pixels */
    unsigned int npixels;           /* Number of used pixels */
    XpmColorSymbol *colorsymbols;   /* Array of color symbols to
                               * override */
    unsigned int numsymbols;        /* Number of symbols */
    char *rgb_fname;                /* RGB text file name */
    unsigned int nextensions;       /* number of extensions */
    XpmExtension *extensions;       /* pointer to array of extensions */

    unsigned int ncolors;               /* Number of colors */
    XpmColor *colorTable;               /* Color table pointer */
/* 3.2 backward compatibility code */
    char *hints_cmt;                    /* Comment of the hints section */
    char *colors_cmt;                   /* Comment of the colors section */
    char *pixels_cmt;                   /* Comment of the pixels section */
/* end 3.2 bc */
    unsigned int mask_pixel;            /* Transparent pixel's color table
                                         * index */

    /* Color Allocation Directives */
    unsigned int exactColors;       /* Only use exact colors for visual */
    unsigned int closeness;         /* Allowable RGB deviation */
    unsigned int red_closeness;           /* Allowable red deviation */
    unsigned int green_closeness;   /* Allowable green deviation */
    unsigned int blue_closeness;    /* Allowable blue deviation */
    int color_key;                  /* Use colors from this color set */

    Pixel *alloc_pixels;            /* Returns the list of alloc'ed color
                                 pixels */
    unsigned int nalloc_pixels;           /* Returns the number of alloc'ed
                                 color pixels */

}      XpmAttributes;

/* XpmAttributes value masks bits */
#define XpmVisual    (1L<<0)
#define XpmColormap        (1L<<1)
#define XpmDepth     (1L<<2)
#define XpmSize            (1L<<3)  /* width & height */
#define XpmHotspot         (1L<<4)  /* x_hotspot & y_hotspot */
#define XpmCharsPerPixel   (1L<<5)
#define XpmColorSymbols    (1L<<6)
#define XpmRgbFilename     (1L<<7)
/* 3.2 backward compatibility code */
#define XpmInfos     (1L<<8)
#define XpmReturnInfos     XpmInfos
/* end 3.2 bc */
#define XpmReturnPixels    (1L<<9)
#define XpmExtensions      (1L<<10)
#define XpmReturnExtensions XpmExtensions

#define XpmExactColors     (1L<<11)
#define XpmCloseness       (1L<<12)
#define XpmRGBCloseness    (1L<<13)
#define XpmColorKey        (1L<<14)

#define XpmColorTable      (1L<<15)
#define XpmReturnColorTable XpmColorTable

#define XpmReturnAllocPixels (1L<<16)

/* XpmInfo value masks bits */
#define XpmComments        XpmInfos
#define XpmReturnComments  XpmComments

/* XpmAttributes mask_pixel value when there is no mask */
#ifndef FOR_MSW
#define XpmUndefPixel 0x80000000
#else
/* int is only 16 bit for MSW */
#define XpmUndefPixel 0x8000
#endif

/*
 * color keys for visual type, they must fit along with the number key of
 * each related element in xpmColorKeys[] defined in xpmP.h
 */
#define XPM_MONO  2
#define XPM_GREY4 3
#define XPM_GRAY4 3
#define XPM_GREY  4
#define XPM_GRAY  4
#define XPM_COLOR 5


/*
 * minimal portability layer between ansi and KR C
 */

/* forward declaration of functions with prototypes */

#if defined(__STDC__) || defined(__cplusplus) || defined(c_plusplus)
 /* ANSI || C++ */
#define FUNC(f, t, p) extern t f p
#define LFUNC(f, t, p) static t f p
#else  /* K&R */
#define FUNC(f, t, p) extern t f()
#define LFUNC(f, t, p) static t f()
#endif /* end of K&R */


/*
 * functions declarations
 */

#ifdef __cplusplus
extern "C" {
#endif

/* FOR_MSW, all ..Pixmap.. are excluded, only the ..XImage.. are used */

#ifndef FOR_MSW
    FUNC(XpmCreatePixmapFromData, int, (Display *display,
                              Drawable d,
                              char **data,
                              Pixmap *pixmap_return,
                              Pixmap *shapemask_return,
                              XpmAttributes *attributes));

    FUNC(XpmCreateDataFromPixmap, int, (Display *display,
                              char ***data_return,
                              Pixmap pixmap,
                              Pixmap shapemask,
                              XpmAttributes *attributes));

    FUNC(XpmReadFileToPixmap, int, (Display *display,
                            Drawable d,
                            char *filename,
                            Pixmap *pixmap_return,
                            Pixmap *shapemask_return,
                            XpmAttributes *attributes));

    FUNC(XpmWriteFileFromPixmap, int, (Display *display,
                               char *filename,
                               Pixmap pixmap,
                               Pixmap shapemask,
                               XpmAttributes *attributes));
#endif  /* ndef FOR_MSW */

    FUNC(XpmCreateImageFromData, int, (Display *display,
                               char **data,
                               XImage **image_return,
                               XImage **shapemask_return,
                               XpmAttributes *attributes));

    FUNC(XpmCreateDataFromImage, int, (Display *display,
                               char ***data_return,
                               XImage *image,
                               XImage *shapeimage,
                               XpmAttributes *attributes));

    FUNC(XpmReadFileToImage, int, (Display *display,
                           char *filename,
                           XImage **image_return,
                           XImage **shapeimage_return,
                           XpmAttributes *attributes));

    FUNC(XpmWriteFileFromImage, int, (Display *display,
                              char *filename,
                              XImage *image,
                              XImage *shapeimage,
                              XpmAttributes *attributes));

    FUNC(XpmCreateImageFromBuffer, int, (Display *display,
                               char *buffer,
                               XImage **image_return,
                               XImage **shapemask_return,
                               XpmAttributes *attributes));
#ifndef FOR_MSW
    FUNC(XpmCreatePixmapFromBuffer, int, (Display *display,
                                Drawable d,
                                char *buffer,
                                Pixmap *pixmap_return,
                                Pixmap *shapemask_return,
                                XpmAttributes *attributes));

    FUNC(XpmCreateBufferFromImage, int, (Display *display,
                               char **buffer_return,
                               XImage *image,
                               XImage *shapeimage,
                               XpmAttributes *attributes));

    FUNC(XpmCreateBufferFromPixmap, int, (Display *display,
                                char **buffer_return,
                                Pixmap pixmap,
                                Pixmap shapemask,
                                XpmAttributes *attributes));
#endif  /* ndef FOR_MSW */
    FUNC(XpmReadFileToBuffer, int, (char *filename, char **buffer_return));
    FUNC(XpmWriteFileFromBuffer, int, (char *filename, char *buffer));

    FUNC(XpmReadFileToData, int, (char *filename, char ***data_return));
    FUNC(XpmWriteFileFromData, int, (char *filename, char **data));

    FUNC(XpmAttributesSize, int, ());
    FUNC(XpmFreeAttributes, void, (XpmAttributes *attributes));
    FUNC(XpmFreeExtensions, void, (XpmExtension *extensions,
                           int nextensions));

    FUNC(XpmFreeXpmImage, void, (XpmImage *image));
    FUNC(XpmFreeXpmInfo, void, (XpmInfo *info));
    FUNC(XpmGetErrorString, char *, (int errcode));
    FUNC(XpmLibraryVersion, int, ());

    /* XpmImage functions */
    FUNC(XpmReadFileToXpmImage, int, (char *filename,
                              XpmImage *image,
                              XpmInfo *info));

    FUNC(XpmWriteFileFromXpmImage, int, (char *filename,
                               XpmImage *image,
                               XpmInfo *info));
#ifndef FOR_MSW
    FUNC(XpmCreatePixmapFromXpmImage, int, (Display *display,
                                  Drawable d,
                                  XpmImage *image,
                                  Pixmap *pixmap_return,
                                  Pixmap *shapemask_return,
                                  XpmAttributes *attributes));
#endif
    FUNC(XpmCreateImageFromXpmImage, int, (Display *display,
                                 XpmImage *image,
                                 XImage **image_return,
                                 XImage **shapeimage_return,
                                 XpmAttributes *attributes));

    FUNC(XpmCreateXpmImageFromImage, int, (Display *display,
                                 XImage *image,
                                 XImage *shapeimage,
                                 XpmImage *xpmimage,
                                 XpmAttributes *attributes));
#ifndef FOR_MSW
    FUNC(XpmCreateXpmImageFromPixmap, int, (Display *display,
                                  Pixmap pixmap,
                                  Pixmap shapemask,
                                  XpmImage *xpmimage,
                                  XpmAttributes *attributes));
#endif
    FUNC(XpmCreateDataFromXpmImage, int, (char ***data_return,
                                XpmImage *image,
                                XpmInfo *info));

    FUNC(XpmCreateXpmImageFromData, int, (char **data,
                                XpmImage *image,
                                XpmInfo *info));

    FUNC(XpmCreateXpmImageFromBuffer, int, (char *buffer,
                                  XpmImage *image,
                                  XpmInfo *info));

    FUNC(XpmCreateBufferFromXpmImage, int, (char **buffer_return,
                                  XpmImage *image,
                                  XpmInfo *info));

#ifdef __cplusplus
} /* for C++ V2.0 */
#endif


/* backward compatibility */

/* for version 3.0c */
#define XpmPixmapColorError  XpmColorError
#define XpmPixmapSuccess     XpmSuccess
#define XpmPixmapOpenFailed  XpmOpenFailed
#define XpmPixmapFileInvalid XpmFileInvalid
#define XpmPixmapNoMemory    XpmNoMemory
#define XpmPixmapColorFailed XpmColorFailed

#define XpmReadPixmapFile(dpy, d, file, pix, mask, att) \
    XpmReadFileToPixmap(dpy, d, file, pix, mask, att)
#define XpmWritePixmapFile(dpy, file, pix, mask, att) \
    XpmWriteFileFromPixmap(dpy, file, pix, mask, att)

/* for version 3.0b */
#define PixmapColorError  XpmColorError
#define PixmapSuccess     XpmSuccess
#define PixmapOpenFailed  XpmOpenFailed
#define PixmapFileInvalid XpmFileInvalid
#define PixmapNoMemory    XpmNoMemory
#define PixmapColorFailed XpmColorFailed

#define ColorSymbol XpmColorSymbol

#define XReadPixmapFile(dpy, d, file, pix, mask, att) \
    XpmReadFileToPixmap(dpy, d, file, pix, mask, att)
#define XWritePixmapFile(dpy, file, pix, mask, att) \
    XpmWriteFileFromPixmap(dpy, file, pix, mask, att)
#define XCreatePixmapFromData(dpy, d, data, pix, mask, att) \
    XpmCreatePixmapFromData(dpy, d, data, pix, mask, att)
#define XCreateDataFromPixmap(dpy, data, pix, mask, att) \
    XpmCreateDataFromPixmap(dpy, data, pix, mask, att)

#endif /* XPM_NUMBERS */
#endif

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