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/*
* GTEXT.H
*
* $Id: gtext.h,v 1.1 1993/08/27 17:08:43 munro Exp $
*
* Declare GIST text utilities
*
*/
/* Copyright (c) 1994. The Regents of the University of California.
All rights reserved. */
#ifndef GTEXT_H
#define GTEXT_H
#include "gist.h"
/* Return t->alignH, t->alignV, guaranteed not TH_NORMAL or TV_NORMAL */
extern void GtGetAlignment(const GpTextAttribs *t,
int *alignH, int *alignV);
/* Get shape of text input to GdText, given a function Width which can
compute the width of a simple text string (no imbedded \n). Returns
largest value of Width for any line, and a line count.
If gtDoEscapes==1 (default), and Width!=0, the Width function must
handle the !, ^, and _ escape sequences.
If Width==0, the default Width function is the number of
non-escaped characters. */
typedef GpReal (*WidthFunction)(const char *text, int nChars,
const GpTextAttribs *t);
extern int GtTextShape(const char *text, const GpTextAttribs *t,
WidthFunction Width, GpReal *widest);
/* Return the next line of text-- if text[0] is not '\n' and path not
T_UP or T_DOWN, returns text and a count of the characters in the
line, nChars (always 1 if T_UP or T_DOWN). If text is '\0', or '\n'
with path T_UP or T_DOWN, returns 0. Otherwise, returns text+1 and
a count of the number of characters to the next '\n' or '\0'. */
extern const char *GtNextLine(const char *text, int *nChars, int path);
/* Use ^ (superscript), _ (subscript), and ! (symbol) escape sequences
in GpText. These are on (gtDoEscapes==1) by default. */
extern int gtDoEscapes;
#endif
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