charsize.c

Intro/: Directory containing introductory examples. HelloWorld.c A simple program that draws a bo

#include <phigs.h>			/* get HP-PHIGS definitions for C */
#include <stdio.h>			/* get standard I/O definitions */

main()					/* file "CharSize.c" */
{
    Pint	WorkstnID = 1;		/* workstation identifier */
    Pint	ConnID;			/* connection identifier */
    Pint	WorkstnType = POIDDX;	/* out/in, direct, dbl bfr, Xwindow */
    Pint	TheStructure = 1;	/* structure ID (chosen by user) */
    char	*String, Str[2];	/* string holders */
    float	Height = 0.0;		/* temporary variable: height */
    float	Width = 0.05;		/* temporary variable: width */
    float	X;			/* X position holder */
    Ppoint	Loc;			/* location of text */
    int		I;			/* loop control variable */

    popen_phigs((char *) stderr, 0);	/* errors go to "stderr" */
    pescape_u4("/dev/screen/phigs_window", &ConnID);
    popen_ws(WorkstnID, (void *) ConnID, WorkstnType);
    popen_struct(TheStructure);
    strcpy(Str, "?");			/* put \0 into Str[1] */
    /*--- show character height --------------------------------------------*/
    String = "bigger and bigger";	/* initialize string */
    Loc.x = 0.0, Loc.y = 0.7;		/* initial character location */
    for (I = 0; I < 17; I++) {		/* loop for "bigger and bigger" */
	Height += 0.008;		/* increment height value */
	pset_char_ht(Height);
	Loc.x += Height * 0.7;		/* increment X position */
	Str[0] = String[I];		/* char -> null-terminated string */
	ptext(&Loc, Str);		/* define a character */
    }
    /*--- show character width ---------------------------------------------*/
    String = "wider and wider";		/* initialize string */
    Loc.x = 0.0, Loc.y = 0.3;		/* initial character location */
    for (I = 0; I < 15; I++) {		/* loop for "wider and wider" */
	Width += 0.06;			/* increment width value */
	pset_char_expan(Width);		/* set character width */
	Loc.x += Width * 0.1;		/* increment X position */
	Str[0] = String[I];		/* char -> null-terminated string */
	ptext(&Loc, Str);		/* print a character */
    }
    pclose_struct();
    ppost_struct(WorkstnID, TheStructure, 1.0);
    pupd_ws(WorkstnID, PFLAG_PERFORM);	/* (regeneration flag) */
    pclose_ws(WorkstnID);
    pclose_phigs();
}