src/frontends/qt4/GuiVSpace.cpp

   1 /**
   2  * \file GuiVSpace.cpp
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author André Pönitz
   7  * \author Jürgen Vigna
   8  * \author Rob Lahaye
   9  * \author Angus Leeming
  10  * \author Edwin Leuven
  11  * \author Jürgen Spitzmüller
  12  *
  13  * Full author contact details are available in file CREDITS.
  14  */
  15
  16 #include <config.h>
  17
  18 #include "GuiVSpace.h"
  19
  20 #include "LengthCombo.h"
  21 #include "qt_helpers.h"
  22 #include "Validator.h"
  23
  24 #include "Spacing.h"
  25 #include "VSpace.h"
  26
  27 #include "insets/InsetVSpace.h"
  28
  29 #include "support/gettext.h"
  30 #include "support/lstrings.h"
  31
  32 #include <QCheckBox>
  33 #include <QLineEdit>
  34 #include <QPushButton>
  35 #include <QValidator>
  36
  37 using namespace std;
  38
  39 namespace lyx {
  40 namespace frontend {
  41
  42 GuiVSpace::GuiVSpace(QWidget * parent) : InsetParamsWidget(parent)
  43 {
  44         setupUi(this);
  45
  46         connect(valueLE, SIGNAL(textChanged(QString)),
  47                 this, SIGNAL(changed()));
  48         connect(keepCB, SIGNAL(clicked()),
  49                 this, SIGNAL(changed()));
  50         connect(unitCO, SIGNAL(selectionChanged(lyx::Length::UNIT)),
  51                 this, SIGNAL(changed()));
  52
  53         connect(spacingCO, SIGNAL(activated(int)),
  54                 this, SLOT(enableCustom(int)));
  55
  56         valueLE->setValidator(unsignedGlueLengthValidator(valueLE));
  57
  58         // initialize the length validator
  59         addCheckedWidget(valueLE, valueL);
  60         enableCustom(spacingCO->currentIndex());
  61 }
  62
  63
  64 void GuiVSpace::enableCustom(int selection)
  65 {
  66         bool const enable = selection == 5;
  67         valueLE->setEnabled(enable);
  68         if (enable)
  69                 valueLE->setFocus();
  70         valueL->setEnabled(enable);
  71         unitCO->setEnabled(enable);
  72         changed();
  73 }
  74
  75
  76 static void setWidgetsFromVSpace(VSpace const & space,
  77                           QComboBox * spacing,
  78                           QLineEdit * value,
  79                           LengthCombo * unit,
  80                           QCheckBox * keep)
  81 {
  82         int item = 0;
  83         switch (space.kind()) {
  84                 case VSpace::DEFSKIP:   item = 0; break;
  85                 case VSpace::SMALLSKIP: item = 1; break;
  86                 case VSpace::MEDSKIP:   item = 2; break;
  87                 case VSpace::BIGSKIP:   item = 3; break;
  88                 case VSpace::VFILL:     item = 4; break;
  89                 case VSpace::LENGTH:    item = 5; break;
  90         }
  91         spacing->setCurrentIndex(item);
  92         keep->setChecked(space.keep());
  93
  94         Length::UNIT const default_unit = Length::defaultUnit();
  95         bool const custom_vspace = space.kind() == VSpace::LENGTH;
  96         if (custom_vspace) {
  97                 value->setEnabled(true);
  98                 unit->setEnabled(true);
  99                 string length = space.length().asString();
 100                 lengthToWidgets(value, unit, length, default_unit);
 101         } else {
 102                 lengthToWidgets(value, unit, "", default_unit);
 103                 value->setEnabled(false);
 104                 unit->setEnabled(false);
 105         }
 106 }
 107
 108
 109 static VSpace setVSpaceFromWidgets(int spacing,
 110         QLineEdit * value, LengthCombo * unit, bool keep)
 111 {
 112         VSpace space;
 113
 114         switch (spacing) {
 115                 case 0: space = VSpace(VSpace::DEFSKIP); break;
 116                 case 1: space = VSpace(VSpace::SMALLSKIP); break;
 117                 case 2: space = VSpace(VSpace::MEDSKIP); break;
 118                 case 3: space = VSpace(VSpace::BIGSKIP); break;
 119                 case 4: space = VSpace(VSpace::VFILL); break;
 120                 case 5: space = VSpace(GlueLength(widgetsToLength(value, unit))); break;
 121         }
 122
 123         space.setKeep(keep);
 124         return space;
 125 }
 126
 127
 128 docstring GuiVSpace::dialogToParams() const
 129 {
 130         // If a vspace choice is "Length" but there's no text in
 131         // the input field, do not insert a vspace at all.
 132         if (spacingCO->currentIndex() == 5 && valueLE->text().isEmpty())
 133                 return docstring();
 134
 135         VSpace const params = setVSpaceFromWidgets(spacingCO->currentIndex(),
 136                         valueLE, unitCO, keepCB->isChecked());
 137         return from_ascii(InsetVSpace::params2string(params));
 138 }
 139
 140
 141 void GuiVSpace::paramsToDialog(Inset const * inset)
 142 {
 143         InsetVSpace const * vs = static_cast<InsetVSpace const *>(inset);
 144         VSpace const & params = vs->space();
 145         setWidgetsFromVSpace(params, spacingCO, valueLE, unitCO, keepCB);
 146         enableCustom(spacingCO->currentIndex());
 147 }
 148
 149 } // namespace frontend
 150 } // namespace lyx
 151
 152
 153 #include "moc_GuiVSpace.cpp"