src/frontends/qt2/lengthvalidator.C

   1 /**
   2  * \file lengthvalidator.C
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author Angus Leeming
   7  *
   8  * Full author contact details are available in file CREDITS.
   9  */
  10
  11
  12 #include <config.h>
  13
  14 #include "lengthvalidator.h"
  15 #include "qt_helpers.h"
  16
  17 #include "support/lstrings.h"
  18
  19 #include <qwidget.h>
  20
  21
  22 using lyx::support::isStrDbl;
  23 using std::string;
  24
  25
  26 LengthValidator::LengthValidator(QWidget * parent, const char * name)
  27         : QValidator(parent, name),
  28           no_bottom_(true), glue_length_(false)
  29 {}
  30
  31
  32 QValidator::State LengthValidator::validate(QString & qtext, int &) const
  33 {
  34         string const text = fromqstr(qtext);
  35         if (!text.empty() && isStrDbl(text))
  36                 return QValidator::Acceptable;
  37
  38         if (glue_length_) {
  39                 LyXGlueLength gl;
  40                 return (isValidGlueLength(text, &gl)) ?
  41                         QValidator::Acceptable : QValidator::Intermediate;
  42                 }
  43
  44         LyXLength l;
  45         bool const valid_length = isValidLength(text, &l);
  46         if (!valid_length)
  47                 return QValidator::Intermediate;
  48
  49         if (no_bottom_)
  50                 return QValidator::Acceptable;
  51
  52         return b_.inPixels(100) <= l.inPixels(100) ?
  53                 QValidator::Acceptable : QValidator::Intermediate;
  54 }
  55
  56
  57 void LengthValidator::setBottom(LyXLength const & b)
  58 {
  59         b_ = b;
  60         no_bottom_ = false;
  61 }
  62
  63
  64 void LengthValidator::setBottom(LyXGlueLength const & g)
  65 {
  66         g_ = g;
  67         no_bottom_ = false;
  68         glue_length_ = true;
  69 }