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/* This file contains the capmod method, which is a GNU extension to
libplot. It sets a drawing attribute: the cap mode used when drawing
subsequent lines and polylines. */
/* In this generic version, we simply store the new cap mode name in the
drawing state. */
#include "sys-defines.h"
#include "plot.h"
#include "extern.h"
int
#ifdef _HAVE_PROTOS
_g_capmod (const char *s)
#else
_g_capmod (s)
const char *s;
#endif
{
if (!_plotter->open)
{
_plotter->error ("capmod: invalid operation");
return -1;
}
if (_plotter->drawstate->PointsInLine > 0
|| _plotter->drawstate->arc_stashed)
_plotter->endpath(); /* flush polyline if any */
/* null pointer resets to default */
if ((!s) || !strcmp(s, "(null)"))
s = _plotter->default_drawstate->cap_mode;
free (_plotter->drawstate->cap_mode);
_plotter->drawstate->cap_mode = (char *)_plot_xmalloc (strlen (s) + 1);
strcpy (_plotter->drawstate->cap_mode, s);
/* The following three cap types are now standard. */
if (strcmp( s, "butt") == 0)
_plotter->drawstate->cap_type = CAP_BUTT;
else if (strcmp( s, "round") == 0)
_plotter->drawstate->cap_type = CAP_ROUND;
else if (strcmp( s, "projecting") == 0)
_plotter->drawstate->cap_type = CAP_PROJECT;
else
/* don't recognize, silently switch to default mode */
return _g_capmod (_plotter->default_drawstate->cap_mode);
return 0;
}
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