gnuplot/src/gplt_x11.h at branch-4-2-stable · gnuplot/gnuplot · GitHub

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/* GNUPLOT - gplt_x11.h */

/*[

* Permission to use, copy, and distribute this software and its

* documentation for any purpose with or 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.

* Permission to modify the software is granted, but not the right to

* distribute the complete modified source code. Modifications are to

* be distributed as patches to the released version. Permission to

* distribute binaries produced by compiling modified sources is granted,

* provided you

* 1. distribute the corresponding source modifications from the

* released version in the form of a patch file along with the binaries,

* 2. add special version identification to distinguish your version

* in addition to the base release version number,

* 3. provide your name and address as the primary contact for the

* support of your modified version, and

* 4. retain our contact information in regard to use of the base

* software.

* Permission to distribute the released version of the source code along

* with corresponding source modifications in the form of a patch file is

* granted with same provisions 2 through 4 for binary distributions.

* This software is provided "as is" without express or implied warranty

* to the extent permitted by applicable law.

]*/

#ifndef GNUPLOT_GPLT_X11_H

#define GNUPLOT_GPLT_X11_H

#if defined(HAVE_SYS_SELECT_H) && !defined(VMS)

# include <sys/select.h>

#endif

#ifndef FD_SET

# define FD_SET(n, p) ((p)->fds_bits[0] |= (1 << ((n) % 32)))

# define FD_CLR(n, p) ((p)->fds_bits[0] &= ~(1 << ((n) % 32)))

# define FD_ISSET(n, p) ((p)->fds_bits[0] & (1 << ((n) % 32)))

# define FD_ZERO(p) memset((char *)(p), '\0', sizeof(*(p)))

#endif /* not FD_SET */

#define X11_COMMAND_BUFFER_LENGTH 1024

#if defined(WITH_IMAGE) || defined(BINARY_X11_POLYGON)

/* The endian value sent across the pipe can't have '\n' or '\0' within. */

#define ENDIAN_VALUE 0x50515253

#define X11_GR_CHECK_ENDIANESS 'B'

#endif

#define X11_GR_MAKE_PALETTE 'p'

#define X11_GR_RELEASE_PALETTE 'e'

#define X11_GR_SET_COLOR 'c'

#define X11_GR_SET_RGBCOLOR 'g'

#define X11_GR_SET_LINECOLOR 'l'

#define X11_GR_FILLED_POLYGON 'f'

#ifdef WITH_IMAGE

#define X11_GR_IMAGE 'i'

#endif

#if defined(WITH_IMAGE) || defined(BINARY_X11_POLYGON)

/* One character for function code, and perhaps one or two for the core

* routine to do something strange with end of buffer. So shorten by a

* few by trial and error.

#define BINARY_MAX_CHAR_PER_TRANSFER (X11_COMMAND_BUFFER_LENGTH-3)

/* Encoding character for removing '\n' and '\0' from data stream.

* The strategy is as follows, we pick a character half way between

* '\0' and '\n'. Then the encoded characters occupy a range

* of 10. Next, by observing statistics of the occurrances

* of the encoded characters in the binary data, the translation

* character is chosen so that these encoded characters are moved

* to locations having the least occurances of bytes.

#define SET_COLOR_CODE_CHAR 5

#define FILLED_POLYGON_CODE_CHAR 5

#define IMAGE_CODE_CHAR 1

/* Translation value for making '\0', '\n' and the CODE_CHAR

* less prevalent in the encoded data.

#define SET_COLOR_TRANSLATION_CHAR 3

#define FILLED_POLYGON_TRANSLATION_CHAR -13

#define IMAGE_TRANSLATION_CHAR 45

#endif

#ifdef WITH_IMAGE

/* Maximum image plane value of data transfer.

#define IMAGE_PALETTE_VALUE_MAX USHRT_MAX

#endif

#endif /* GNUPLOT_GPLT_X11_H */

gnuplot/src/gplt_x11.h at branch-4-2-stable · gnuplot/gnuplot · GitHub

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