diff options
Diffstat (limited to 'contrib/groff/src/libs/libdriver/printer.cc')
| -rw-r--r-- | contrib/groff/src/libs/libdriver/printer.cc | 119 |
1 files changed, 32 insertions, 87 deletions
diff --git a/contrib/groff/src/libs/libdriver/printer.cc b/contrib/groff/src/libs/libdriver/printer.cc index 4d66f7b..c97e2ce 100644 --- a/contrib/groff/src/libs/libdriver/printer.cc +++ b/contrib/groff/src/libs/libdriver/printer.cc @@ -1,22 +1,30 @@ // -*- C++ -*- -/* Copyright (C) 1989, 1990, 1991, 1992, 2001 Free Software Foundation, Inc. - Written by James Clark (jjc@jclark.com) -This file is part of groff. +// <groff_src_dir>/src/libs/libdriver/printer.cc -groff 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, or (at your option) any later -version. +/* Copyright (C) 1989, 1990, 1991, 1992, 2001, 2002 + Free Software Foundation, Inc. + Written by James Clark (jjc@jclark.com) -groff 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. + Last update: 12 Apr 2002 -You should have received a copy of the GNU General Public License along -with groff; see the file COPYING. If not, write to the Free Software -Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ + This file is part of groff. + + groff 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, or (at your option) + any later version. + + groff 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 groff; see the file COPYING. If not, write to the Free + Software Foundation, 59 Temple Place - Suite 330, Boston, MA + 02111-1307, USA. +*/ #include "driver.h" @@ -105,6 +113,14 @@ void printer::draw(int, int *, int, const environment *) { } +void printer::change_color(const environment *) +{ +} + +void printer::change_fill_color(const environment *) +{ +} + void printer::set_ascii_char(unsigned char c, const environment *env, int *widthp) { @@ -126,13 +142,12 @@ void printer::set_special_char(const char *nm, const environment *env, int *widthp) { font *f; - int w; + int w; int i = set_char_and_width(nm, env, &w, &f); if (i != -1) { set_char(i, f, env, w, nm); - if (widthp) { + if (widthp) *widthp = w; - } } } @@ -199,73 +214,3 @@ font *printer::get_font_from_index(int fontno) else return(0); } - -// This utility function adjusts the specified center of the -// arc so that it is equidistant between the specified start -// and end points. (p[0], p[1]) is a vector from the current -// point to the center; (p[2], p[3]) is a vector from the -// center to the end point. If the center can be adjusted, -// a vector from the current point to the adjusted center is -// stored in c[0], c[1] and 1 is returned. Otherwise 0 is -// returned. - -#if 1 -int printer::adjust_arc_center(const int *p, double *c) -{ - // We move the center along a line parallel to the line between - // the specified start point and end point so that the center - // is equidistant between the start and end point. - // It can be proved (using Lagrange multipliers) that this will - // give the point nearest to the specified center that is equidistant - // between the start and end point. - - double x = p[0] + p[2]; // (x, y) is the end point - double y = p[1] + p[3]; - double n = x*x + y*y; - if (n != 0) { - c[0]= double(p[0]); - c[1] = double(p[1]); - double k = .5 - (c[0]*x + c[1]*y)/n; - c[0] += k*x; - c[1] += k*y; - return 1; - } - else - return 0; -} -#else -int printer::adjust_arc_center(const int *p, double *c) -{ - int x = p[0] + p[2]; // (x, y) is the end point - int y = p[1] + p[3]; - // Start at the current point; go in the direction of the specified - // center point until we reach a point that is equidistant between - // the specified starting point and the specified end point. Place - // the center of the arc there. - double n = p[0]*double(x) + p[1]*double(y); - if (n > 0) { - double k = (double(x)*x + double(y)*y)/(2.0*n); - // (cx, cy) is our chosen center - c[0] = k*p[0]; - c[1] = k*p[1]; - return 1; - } - else { - // We would never reach such a point. So instead start at the - // specified end point of the arc. Go towards the specified - // center point until we reach a point that is equidistant between - // the specified start point and specified end point. Place - // the center of the arc there. - n = p[2]*double(x) + p[3]*double(y); - if (n > 0) { - double k = 1 - (double(x)*x + double(y)*y)/(2.0*n); - // (c[0], c[1]) is our chosen center - c[0] = p[0] + k*p[2]; - c[1] = p[1] + k*p[3]; - return 1; - } - else - return 0; - } -} -#endif |
