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flightgear/src/GUI/SafeTexFont.cxx

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// Copyright (C) 2008 Tim Moore
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License as
// published by the Free Software Foundation; either version 2 of the
// License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
#include <sys/types.h>
#include <sys/stat.h>
#include <errno.h>
#include "SafeTexFont.hxx"
using namespace flightgear;
int SafeTexFont::load(const char *fname, GLenum mag, GLenum min)
{
struct stat buf;
if (stat(fname, &buf) == -1) {
_status = ERROR;
return FNT_FALSE;
}
_name = fname;
_mag = mag;
_min = min;
return FNT_TRUE;
}
bool SafeTexFont::ensureTextureLoaded()
{
if (_status != ERROR) {
if (_status == LOADED) {
return true;
} else {
int loadStatus = fntTexFont::load(_name.c_str(), _mag, _min);
if (loadStatus == FNT_TRUE) {
_status = LOADED;
return true;
} else {
_status = ERROR;
_error = ulGetError();
return false;
}
}
} else {
return false;
}
}
void SafeTexFont::begin()
{
if (ensureTextureLoaded())
fntTexFont::begin();
}
void SafeTexFont::putch(sgVec3 curpos, float pointsize, float italic, char c)
{
if (ensureTextureLoaded())
fntTexFont::putch(curpos, pointsize, italic, c);
}
void SafeTexFont::puts(sgVec3 curpos, float pointsize, float italic,
const char *s)
{
if (ensureTextureLoaded())
fntTexFont::puts(curpos, pointsize, italic, s);
}