src/frontends/qt4/qt_helpers.C

   1 /**
   2  * \file qt_helpers.C
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author Dekel Tsur
   7  * \author Jürgen Spitzmüller
   8  *
   9  * Full author contact details are available in file CREDITS.
  10  */
  11
  12 #include <config.h>
  13
  14 #include "lengthcombo.h"
  15 #include "qt_helpers.h"
  16
  17 #include "lengthcommon.h"
  18 #include "gettext.h"
  19
  20 #include "support/lstrings.h"
  21 #include "support/convert.h"
  22
  23 #include "debug.h"
  24
  25 #include <QComboBox>
  26 #include <qlineedit.h>
  27 #include <qtextcodec.h>
  28
  29 #include <algorithm>
  30
  31
  32 namespace lyx {
  33
  34 using support::isStrDbl;
  35
  36 using std::vector;
  37 using std::make_pair;
  38 using std::string;
  39 using std::pair;
  40 using std::endl;
  41
  42
  43 string makeFontName(string const & family, string const & foundry)
  44 {
  45         if (foundry.empty())
  46                 return family;
  47         return family + " [" + foundry + ']';
  48 }
  49
  50
  51 pair<string, string> parseFontName(string const & name)
  52 {
  53         string::size_type const idx = name.find('[');
  54         if (idx == string::npos || idx == 0)
  55                 return make_pair(name, string());
  56         return make_pair(name.substr(0, idx - 1),
  57                          name.substr(idx + 1, name.size() - idx - 2));
  58 }
  59
  60
  61 string widgetsToLength(QLineEdit const * input, LengthCombo const * combo)
  62 {
  63         QString const length = input->text();
  64         if (length.isEmpty())
  65                 return string();
  66
  67         // Don't return unit-from-choice if the input(field) contains a unit
  68         if (isValidGlueLength(fromqstr(length)))
  69                 return fromqstr(length);
  70
  71         LyXLength::UNIT const unit = combo->currentLengthItem();
  72
  73         return LyXLength(length.toDouble(), unit).asString();
  74 }
  75
  76
  77 LyXLength widgetsToLength(QLineEdit const * input, QComboBox const * combo)
  78 {
  79         QString const length = input->text();
  80         if (length.isEmpty())
  81                 return LyXLength();
  82
  83         // don't return unit-from-choice if the input(field) contains a unit
  84         if (isValidGlueLength(fromqstr(length)))
  85                 return LyXLength(fromqstr(length));
  86
  87         LyXLength::UNIT const unit = unitFromString(fromqstr(combo->currentText()));
  88
  89         return LyXLength(length.toDouble(), unit);
  90 }
  91
  92
  93 void lengthToWidgets(QLineEdit * input, LengthCombo * combo,
  94         string const & len, LyXLength::UNIT defaultUnit)
  95 {
  96         if (len.empty()) {
  97                 // no length (UNIT_NONE)
  98                 combo->setCurrentItem(defaultUnit);
  99                 input->setText("");
 100         } else if (!isValidLength(len) && !isStrDbl(len)) {
 101                 // use input field only for gluelengths
 102                 combo->setCurrentItem(defaultUnit);
 103                 input->setText(toqstr(len));
 104         } else {
 105                 combo->setCurrentItem(LyXLength(len).unit());
 106                 input->setText(toqstr(convert<string>(LyXLength(len).value())));
 107         }
 108 }
 109
 110
 111 QString const qt_(char const * str, const char *)
 112 {
 113         return toqstr(_(str));
 114 }
 115
 116
 117 QString const qt_(string const & str)
 118 {
 119         return toqstr(_(str));
 120 }
 121
 122
 123 docstring const formatted(docstring const & text, int w)
 124 {
 125         docstring sout;
 126
 127         if (text.empty())
 128                 return sout;
 129
 130         docstring::size_type curpos = 0;
 131         docstring line;
 132
 133         for (;;) {
 134                 docstring::size_type const nxtpos1 = text.find(' ',  curpos);
 135                 docstring::size_type const nxtpos2 = text.find('\n', curpos);
 136                 docstring::size_type const nxtpos = std::min(nxtpos1, nxtpos2);
 137
 138                 docstring const word =
 139                         nxtpos == docstring::npos ?
 140                         text.substr(curpos) :
 141                         text.substr(curpos, nxtpos - curpos);
 142
 143                 bool const newline = (nxtpos2 != docstring::npos &&
 144                                       nxtpos2 < nxtpos1);
 145
 146                 docstring const line_plus_word =
 147                         line.empty() ? word : line + lyx::char_type(' ') + word;
 148
 149                 // FIXME: make w be size_t
 150                 if (int(line_plus_word.length()) >= w) {
 151                         sout += line + lyx::char_type('\n');
 152                         if (newline) {
 153                                 sout += word + lyx::char_type('\n');
 154                                 line.erase();
 155                         } else {
 156                                 line = word;
 157                         }
 158
 159                 } else if (newline) {
 160                         sout += line_plus_word + lyx::char_type('\n');
 161                         line.erase();
 162
 163                 } else {
 164                         if (!line.empty())
 165                                 line += lyx::char_type(' ');
 166                         line += word;
 167                 }
 168
 169                 if (nxtpos == docstring::npos) {
 170                         if (!line.empty())
 171                                 sout += line;
 172                         break;
 173                 }
 174
 175                 curpos = nxtpos + 1;
 176         }
 177
 178         return sout;
 179 }
 180
 181
 182 } // namespace lyx