/* PLIB - A Suite of Portable Game Libraries Copyright (C) 1998,2002 Steve Baker This library is free software; you can redistribute it and/or modify it under the terms of the GNU Library General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This library 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 Library General Public License for more details. You should have received a copy of the GNU Library General Public License along with this library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA For further information visit http://plib.sourceforge.net $Id: fnt.cxx 1939 2004-08-05 00:41:53Z puggles $ */ #include "fntLocal.h" #include #include fntFont:: fntFont () {} fntFont::~fntFont () {} int fntTexFont::load ( const SGPath& path, GLenum mag, GLenum min ) { if (path.extension() == "txf") { return loadTXF ( path, mag, min ) ; } else { const auto ps = path.utf8Str(); fntSetError ( SG_WARN, "fnt::load: Error - Unrecognised file format for '%s'", ps.c_str() ) ; return FNT_FALSE ; } } float fntTexFont::low_putch ( sgVec3 curpos, float pointsize, float italic, char c ) { unsigned int cc = (unsigned char) c ; /* Auto case-convert if character is absent from font. */ //zhongjin if ( ! exists [ cc ] ) { //zhongjin /* if ( cc >= 'A' && cc <= 'Z' ) cc = cc - 'A' + 'a' ; else if ( cc >= 'a' && cc <= 'z' ) cc = cc - 'a' + 'A' ; */ if ( cc == ' ' ) { curpos [ 0 ] += pointsize / 2.0f ; return pointsize / 2.0f ; } } /* We might want to consider making some absent characters from others (if they exist): lowercase 'l' could be made into digit '1' or letter 'O' into digit '0'...or vice versa. We could also make 'b', 'd', 'p' and 'q' by mirror-imaging - this would save a little more texture memory in some fonts. */ if ( ! exists [ cc ] ) return 0.0f ; glBegin ( GL_TRIANGLE_STRIP ) ; glTexCoord2f ( t_left [cc], t_bot[cc] ) ; glVertex3f ( curpos[0] + v_left [cc] * pointsize, curpos[1] + v_bot [cc] * pointsize, curpos[2] ) ; glTexCoord2f ( t_left [cc], t_top[cc] ) ; glVertex3f ( curpos[0] + (italic + v_left [cc]) * pointsize, curpos[1] + v_top [cc] * pointsize, curpos[2] ) ; glTexCoord2f ( t_right[cc], t_bot[cc] ) ; glVertex3f ( curpos[0] + v_right[cc] * pointsize, curpos[1] + v_bot [cc] * pointsize, curpos[2] ) ; glTexCoord2f ( t_right[cc], t_top[cc] ) ; glVertex3f ( curpos[0] + (italic + v_right[cc]) * pointsize, curpos[1] + v_top [cc] * pointsize, curpos[2] ) ; glEnd () ; float ww = ( gap + ( fixed_pitch ? width : widths[cc] ) ) * pointsize ; curpos[0] += ww ; return ww ; } void fntTexFont::setGlyph ( int c, float wid, float tex_left, float tex_right, float tex_bot , float tex_top , float vtx_left, float vtx_right, float vtx_bot , float vtx_top ) { unsigned int cc = (unsigned int) c ; exists[cc] = FNT_TRUE ; widths[cc] = wid; t_left[cc] = tex_left ; t_right[cc] = tex_right ; t_bot [cc] = tex_bot ; t_top [cc] = tex_top ; v_left[cc] = vtx_left ; v_right[cc] = vtx_right ; v_bot [cc] = vtx_bot ; v_top [cc] = vtx_top ; } int fntTexFont::getGlyph ( char c, float* wid, float *tex_left, float *tex_right, float *tex_bot , float *tex_top , float *vtx_left, float *vtx_right, float *vtx_bot , float *vtx_top ) { //zhongjin SG_LOG(SG_GUI,SG_ALERT, "getGlyph " << c); unsigned int cc = (unsigned char) c ; if ( ! exists[cc] ) return FNT_FALSE ; if ( wid != NULL ) *wid = widths [cc] ; if ( tex_left != NULL ) *tex_left = t_left [cc] ; if ( tex_right != NULL ) *tex_right = t_right[cc] ; if ( tex_bot != NULL ) *tex_bot = t_bot [cc] ; if ( tex_top != NULL ) *tex_top = t_top [cc] ; if ( vtx_left != NULL ) *vtx_left = v_left [cc] ; if ( vtx_right != NULL ) *vtx_right = v_right[cc] ; if ( vtx_bot != NULL ) *vtx_bot = v_bot [cc] ; if ( vtx_top != NULL ) *vtx_top = v_top [cc] ; return FNT_TRUE ; } void fntTexFont::getBBox ( const char *s, float pointsize, float italic, float *left, float *right, float *bot , float *top ) { float h_pos = 0.0f ; float v_pos = 0.0f ; float l, r, b, t ; l = r = b = t = 0.0f ; while ( *s != '\0' ) { if ( *s == '\n' ) { h_pos = 0.0f ; v_pos -= 1.333f ; s++ ; continue ; } unsigned int cc = (unsigned char) *(s++) ; if ( ! exists [ cc ] ) { if ( cc >= 'A' && cc <= 'Z' ) cc = cc - 'A' + 'a' ; else if ( cc >= 'a' && cc <= 'z' ) cc = cc - 'a' + 'A' ; if ( cc == ' ' ) { r += 0.5f ; h_pos += 0.5f ; continue ; } } if ( ! exists [ cc ] ) continue ; if ( italic >= 0 ) { if ( l > h_pos + v_left [cc] ) l = h_pos + v_left [cc] ; if ( r < gap + h_pos + v_right[cc]+italic ) r = gap + h_pos + v_right[cc] + italic ; } else { if ( l > h_pos + v_left [cc]+italic ) l = h_pos + v_left [cc] + italic ; if ( r < gap + h_pos + v_right[cc] ) r = gap + h_pos + v_right[cc] ; } if ( b > v_pos + v_bot [cc] ) b = v_pos + v_bot [cc] ; if ( t < v_pos + v_top [cc] ) t = v_pos + v_top [cc] ; h_pos += gap + ( fixed_pitch ? width : widths[cc] ) ; } if ( left != NULL ) *left = l * pointsize ; if ( right != NULL ) *right = r * pointsize ; if ( top != NULL ) *top = t * pointsize ; if ( bot != NULL ) *bot = b * pointsize ; } void fntTexFont::puts ( sgVec3 curpos, float pointsize, float italic, const char *s ) { SGfloat origx = curpos[0] ; if ( ! bound ) bind_texture () ; while ( *s != '\0' ) { if (*s == '\n') { curpos[0] = origx ; curpos[1] -= pointsize ; } else low_putch ( curpos, pointsize, italic, *s ) ; s++ ; } } void fntInit () { /* Empty right now */ } void fntSetError(int level, const char* format, ...) { const int bufferLength = 2048; char buffer[2048]; va_list args; va_start (args, format); vsnprintf(buffer,bufferLength,format, args); va_end (args); SG_LOG(SG_GUI, static_cast(level), buffer); }