GRASS GIS 8 Programmer's Manual 8.2.1(2023)-exported
gsd_fonts.c
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1/*!
2 \file lib/ogsf/gsd_fonts.c
3
4 \brief OGSF library - loading and manipulating surfaces
5
6 GRASS OpenGL gsurf OGSF Library
7
8 \todo This file needs to be re-written in OpenGL
9
10 (C) 1999-2008 by the GRASS Development Team
11
12 This program is free software under the
13 GNU General Public License (>=v2).
14 Read the file COPYING that comes with GRASS
15 for details.
16
17 \author Bill Brown USACERL, GMSL/University of Illinois
18 \author Doxygenized by Martin Landa <landa.martin gmail.com> (May 2008)
19 */
20
21#include <string.h>
22#include <assert.h>
23
24#include <grass/ogsf.h>
25
26#include "rgbpack.h"
27
28/*!
29 \brief Get text width
30
31 \param s text string
32 \param size size
33
34 \return text width
35 */
36int gsd_get_txtwidth(const char *s, int size)
37{
38 int width, len;
39
40 len = strlen(s);
41 width = (size * len) / 2;
42
43 return (width);
44}
45
46/*!
47 \brief Get text height
48
49 \param size size
50
51 \return text height
52 */
53int gsd_get_txtheight(int size)
54{
55 unsigned long height;
56
57 height = size / 2;
58
59 return (height);
60
61}
62
63/*!
64 \brief Get text descender
65
66 yorig ??
67
68 Is this defined somewhere ?
69
70 \return 2
71 */
73{
74 return (2);
75}
76
77/*!
78 \brief Get text offset
79
80 xorig ??
81
82 Is this defined somewhere ?
83
84 \return 0
85 */
87{
88 return (0);
89}
90
91/*!
92 \brief Display label
93
94 \param fontbase font-base
95 \param lab_pos label position
96 \param txt text string
97 */
98void do_label_display(GLuint fontbase, float *lab_pos, const char *txt)
99{
100 glRasterPos2f(lab_pos[X], lab_pos[Y]);
101 glListBase(fontbase);
102 glCallLists(strlen(txt), GL_UNSIGNED_BYTE, (const GLvoid *)txt);
103
104 return;
105}
void do_label_display(GLuint fontbase, float *lab_pos, const char *txt)
Display label.
Definition: gsd_fonts.c:98
int gsd_get_txtwidth(const char *s, int size)
Get text width.
Definition: gsd_fonts.c:36
int get_txtdescender(void)
Get text descender.
Definition: gsd_fonts.c:72
int gsd_get_txtheight(int size)
Get text height.
Definition: gsd_fonts.c:53
int get_txtxoffset(void)
Get text offset.
Definition: gsd_fonts.c:86
#define X(j)
#define Y(j)