GRASS GIS 7 Programmer's Manual
7.8.5(2020)-exported
gsd_fonts.c
Go to the documentation of this file.
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/*!
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\file lib/ogsf/gsd_fonts.c
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\brief OGSF library - loading and manipulating surfaces
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GRASS OpenGL gsurf OGSF Library
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\todo This file needs to be re-written in OpenGL
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(C) 1999-2008 by the GRASS Development Team
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This program is free software under the
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GNU General Public License (>=v2).
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Read the file COPYING that comes with GRASS
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for details.
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\author Bill Brown USACERL, GMSL/University of Illinois
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\author Doxygenized by Martin Landa <landa.martin gmail.com> (May 2008)
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*/
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#include <string.h>
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#include <assert.h>
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#include <grass/ogsf.h>
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#include "
rgbpack.h
"
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/*!
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\brief Get text width
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\param s text string
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\param size size
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\return text width
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*/
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int
gsd_get_txtwidth
(
const
char
*s,
int
size)
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{
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int
width, len;
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len = strlen(s);
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width = (size * len) / 2;
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return
(width);
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}
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/*!
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\brief Get text height
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\param size size
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\return text height
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*/
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int
gsd_get_txtheight
(
int
size)
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{
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unsigned
long
height;
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height = size / 2;
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return
(height);
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}
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/*!
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\brief Get text descender
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yorig ??
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Is this defined somewhere ?
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\return 2
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*/
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int
get_txtdescender
(
void
)
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{
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return
(2);
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}
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/*!
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\brief Get text offset
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xorig ??
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Is this defined somewhere ?
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\return 0
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*/
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int
get_txtxoffset
(
void
)
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{
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return
(0);
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}
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/*!
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\brief Display label
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\param fontbase font-base
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\param lab_pos label position
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\param txt text string
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*/
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void
do_label_display
(GLuint fontbase,
float
*lab_pos,
const
char
*txt)
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{
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glRasterPos2f(lab_pos[
X
], lab_pos[
Y
]);
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glListBase(fontbase);
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glCallLists(strlen(txt), GL_UNSIGNED_BYTE, (
const
GLvoid *)txt);
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return
;
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}
get_txtdescender
int get_txtdescender(void)
Get text descender.
Definition:
gsd_fonts.c:72
Y
#define Y(j)
do_label_display
void do_label_display(GLuint fontbase, float *lab_pos, const char *txt)
Display label.
Definition:
gsd_fonts.c:98
gsd_get_txtheight
int gsd_get_txtheight(int size)
Get text height.
Definition:
gsd_fonts.c:53
gsd_get_txtwidth
int gsd_get_txtwidth(const char *s, int size)
Get text width.
Definition:
gsd_fonts.c:36
X
#define X(j)
get_txtxoffset
int get_txtxoffset(void)
Get text offset.
Definition:
gsd_fonts.c:86
rgbpack.h
ogsf
gsd_fonts.c
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