# find.h

    00001 //
    00002 // find.h
    00003 //
    00004 // Copyright (C) 1996 Limit Point Systems, Inc.
    00005 //
    00006 // Author: Curtis Janssen <cljanss@limitpt.com>
    00007 // Maintainer: LPS
    00008 //
    00009 // This file is part of the SC Toolkit.
    00010 //
    00011 // The SC Toolkit is free software; you can redistribute it and/or modify
    00012 // it under the terms of the GNU Library General Public License as published by
    00013 // the Free Software Foundation; either version 2, or (at your option)
    00014 // any later version.
    00015 //
    00016 // The SC Toolkit is distributed in the hope that it will be useful,
    00017 // but WITHOUT ANY WARRANTY; without even the implied warranty of
    00018 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    00019 // GNU Library General Public License for more details.
    00020 //
    00021 // You should have received a copy of the GNU Library General Public License
    00022 // along with the SC Toolkit; see the file COPYING.LIB.  If not, write to
    00023 // the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
    00024 //
    00025 // The U.S. Government is granted a limited license as per AL 91-7.
    00026 //
    00027
    00028 #ifndef _util_render_find_h
    00029 #define _util_render_find_h
    00030
    00031 #include <util/render/stack.h>
    00032 #include <util/render/parameter.h>
    00033
    00034 namespace sc {
    00035
    00036 // cannot be used with g++ 2.6-94q4 and has other bugs anyway
    00037 #if 0
    00038 template <class T1, class T2>
    00039 void
    00040 find_parameter_in_stack(Stack<T1>& stack,
    00041                         Parameter<T2>& (T1::*access)(),
    00042                         T2& result
    00043                         )
    00044 {
    00045   int have_result = 0;
    00046   for (int i=stack.n()-1; i>=0; i--) {
    00047       if ((stack[i]->*access)().is_set()) {
    00048           if (!have_result || (stack[i]->*access)().overrides()) {
    00049               result = (stack[i]->*access)().value();
    00050               have_result = 1;
    00051             }
    00052         }
    00053     }
    00054 }
    00055 #endif
    00056
    00057 inline void
    00058 find_int_parameter_in_appearance_stack(Stack<Ref<Appearance> >& stack,
    00059                         Parameter<int>& (Appearance::*access)(),
    00060                         int& result
    00061                         )
    00062 {
    00063   int have_result = 0;
    00064   for (int i=stack.n()-1; i>=0; i--) {
    00065       if ((stack[i].pointer()->*access)().is_set()) {
    00066           if (!have_result || (stack[i].pointer()->*access)().overrides()) {
    00067               result = (stack[i].pointer()->*access)().value();
    00068               have_result = 1;
    00069             }
    00070         }
    00071     }
    00072 }
    00073
    00074 }
    00075
    00076 #endif
    00077
    00078 // Local Variables:
    00079 // mode: c++
    00080 // c-file-style: "CLJ"
    00081 // End: