Initial commit

1 files changed, 36 insertions, 0 deletions

diff --git a/sys/psio/pscenter.x b/sys/psio/pscenter.x
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+++ b/sys/psio/pscenter.x
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+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+include "psio.h"
+
+
+# PS_CENTER -- Center the string on the page and break.
+
+procedure ps_center (ps, str)
+
+pointer	ps					#I PSIO descriptor
+char	str[ARB]				#I text string
+
+int	mtemp, ps_centerPos()
+errchk	ps_centerpos, ps_output
+
+begin
+	mtemp = PS_CLMARGIN(ps)
+	PS_CLMARGIN(ps) = ps_centerpos (ps, str)
+	call ps_output (ps, str, NO)
+	PS_CLMARGIN(ps) = mtemp
+end
+
+
+# PS_CENTERPOS -- Get the X position of the centered string.
+
+int procedure ps_centerpos (ps, str)
+
+pointer	ps					#I PSIO descriptor
+char    str[ARB]                             	#I string to center
+
+int	ps_textwidth()
+errchk	ps_textwidth
+
+begin
+	return (((PS_PWIDTH(ps) * RESOLUTION)/2) - ps_textwidth (ps, str) / 2)
+end