1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
|
/*
* GTEXT.C
*
* $Id: gtext.c,v 1.1 1993/08/27 17:08:43 munro Exp $
*
* Define GIST text utilities
*
*/
/* Copyright (c) 1994. The Regents of the University of California.
All rights reserved. */
#include "gtext.h"
extern long strcspn(const char *, const char *);
int gtDoEscapes= 1;
/* Return t->alignH, t->alignV, guaranteed not TH_NORMAL or TV_NORMAL */
void GtGetAlignment(const GpTextAttribs *t, int *alignH, int *alignV)
{
*alignH= t->alignH;
*alignV= t->alignV;
if (*alignH==TH_NORMAL) *alignH= TH_LEFT;
if (*alignV==TV_NORMAL) *alignV= TV_BASE;
}
/* 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. */
int GtTextShape(const char *text, const GpTextAttribs *t,
WidthFunction Width, GpReal *widest)
{
int path= t->orient;
GpReal wdest, thisWid;
int nLines, nChars;
/* Count lines in this text, find widest line */
nLines= 0;
wdest= 0.0;
while ((text= GtNextLine(text, &nChars, path))) {
nLines++;
if (Width) thisWid= Width(text, nChars, t);
else thisWid= (GpReal)nChars;
if (thisWid>wdest) wdest= thisWid;
text+= nChars;
}
*widest= wdest;
return nLines;
}
/* Return the next line of text--
returns text and a count of the characters in the
line, nChars. If text is '\0', or '\n', returns text+1 and
a count of the number of characters to the next '\n' or '\0'. */
const char *GtNextLine(const char *text, int *nChars, int path)
{
char first= text[0];
if (!first) {
*nChars= 0;
return 0;
}
if (first=='\n') text+= 1;
*nChars= strcspn(text, "\n");
return text;
}
|
