utils.cpp
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- /*
- * ===========================================================================
- * PRODUCTION $Log: utils.cpp,v $
- * PRODUCTION Revision 1000.0 2004/06/01 21:29:31 gouriano
- * PRODUCTION PRODUCTION: IMPORTED [GCC34_MSVC7] Dev-tree R1.2
- * PRODUCTION
- * ===========================================================================
- */
- /* $Id: utils.cpp,v 1000.0 2004/06/01 21:29:31 gouriano Exp $
- * ===========================================================================
- *
- * PUBLIC DOMAIN NOTICE
- * National Center for Biotechnology Information
- *
- * This software/database is a "United States Government Work" under the
- * terms of the United States Copyright Act. It was written as part of
- * the author's official duties as a United States Government employee and
- * thus cannot be copyrighted. This software/database is freely available
- * to the public for use. The National Library of Medicine and the U.S.
- * Government have not placed any restriction on its use or reproduction.
- *
- * Although all reasonable efforts have been taken to ensure the accuracy
- * and reliability of the software and data, the NLM and the U.S.
- * Government do not and cannot warrant the performance or results that
- * may be obtained by using this software or data. The NLM and the U.S.
- * Government disclaim all warranties, express or implied, including
- * warranties of performance, merchantability or fitness for any particular
- * purpose.
- *
- * Please cite the author in any work or product based on this material.
- *
- * ===========================================================================
- *
- * Authors: Andrey Yazhuk
- *
- * File Description:
- */
-
- #include <ncbi_pch.hpp>
- #include <gui/widgets/fl/utils.hpp>
- BEGIN_NCBI_SCOPE
- /// truncates given string so that its lenght is less or equal "w"
- /// "trunc" controls truncation, if "trunc" == eTruncate_Ellipsis
- /// "..." is appended to the end of the truncated string.
- string fl_trunc_text(const char* s, int n, int w, EFL_Truncate trunc )
- {
- _ASSERT(s);
- static const char* sc_ellipsis = "...";
- int full_w = (int) fl_width(s, n);
-
- if(full_w <= w) { //truncation is not needed
- return s;
- } else {
- int w_av = 0; // width available
- int len = n;
- switch(trunc) {
- case eTruncate_Empty: w_av = w; break;
- case eTruncate_Ellipsis: w_av = w - (int) fl_width(sc_ellipsis); break;
- }
- if(w_av > 0) { // adjust string length
- double K = ((double) w_av) / full_w; //
- len = (int) (K * n);
- int new_w = (int) fl_width(s, len);
- if(new_w > w_av) {
- for( ; new_w > w_av && --len > 0; ) {
- new_w = (int) fl_width(s, len);
- }
- } else {
- for( ; new_w < w_av && ++len < n; ) {
- new_w = (int) fl_width(s, len);
- }
- if(new_w > w_av)
- len--;
- }
- } else len = 0;
-
-
- // create result string
- _ASSERT(len >= 0);
-
- string res(s, len);
- if(trunc == eTruncate_Ellipsis) {
- res += sc_ellipsis;
- }
- return res;
- }
- }
- END_NCBI_SCOPE
- /*
- * ===========================================================================
- * $Log: utils.cpp,v $
- * Revision 1000.0 2004/06/01 21:29:31 gouriano
- * PRODUCTION: IMPORTED [GCC34_MSVC7] Dev-tree R1.2
- *
- * Revision 1.2 2004/05/21 22:27:53 gorelenk
- * Added PCH ncbi_pch.hpp
- *
- * Revision 1.1 2004/05/13 17:19:20 yazhuk
- * Initial revision
- *
- * ===========================================================================
- */