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         // Set up a signed glue length validator
  57         LengthValidator * v = new LengthValidator(valueLE);
  58         v->setBottom(GlueLength());
  59         valueLE->setValidator(v);
  60
  61         // initialize the length validator
  62         addCheckedWidget(valueLE, valueL);
  63         enableCustom(spacingCO->currentIndex());
  64 }
  65
  66
  67 void GuiVSpace::enableCustom(int selection)
  68 {
  69         bool const enable = selection == 5;
  70         valueLE->setEnabled(enable);
  71         if (enable)
  72                 valueLE->setFocus();
  73         valueL->setEnabled(enable);
  74         unitCO->setEnabled(enable);
  75         changed();
  76 }
  77
  78
  79 static void setWidgetsFromVSpace(VSpace const & space,
  80                           QComboBox * spacing,
  81                           QLineEdit * value,
  82                           LengthCombo * unit,
  83                           QCheckBox * keep)
  84 {
  85         int item = 0;
  86         switch (space.kind()) {
  87                 case VSpace::DEFSKIP:   item = 0; break;
  88                 case VSpace::SMALLSKIP: item = 1; break;
  89                 case VSpace::MEDSKIP:   item = 2; break;
  90                 case VSpace::BIGSKIP:   item = 3; break;
  91                 case VSpace::VFILL:     item = 4; break;
  92                 case VSpace::LENGTH:    item = 5; break;
  93         }
  94         spacing->setCurrentIndex(item);
  95         keep->setChecked(space.keep());
  96
  97         Length::UNIT const default_unit = Length::defaultUnit();
  98         bool const custom_vspace = space.kind() == VSpace::LENGTH;
  99         if (custom_vspace) {
 100                 value->setEnabled(true);
 101                 unit->setEnabled(true);
 102                 string length = space.length().asString();
 103                 lengthToWidgets(value, unit, length, default_unit);
 104         } else {
 105                 lengthToWidgets(value, unit, "", default_unit);
 106                 value->setEnabled(false);
 107                 unit->setEnabled(false);
 108         }
 109 }
 110
 111
 112 static VSpace setVSpaceFromWidgets(int spacing,
 113         QLineEdit * value, LengthCombo * unit, bool keep)
 114 {
 115         VSpace space;
 116
 117         switch (spacing) {
 118                 case 0: space = VSpace(VSpace::DEFSKIP); break;
 119                 case 1: space = VSpace(VSpace::SMALLSKIP); break;
 120                 case 2: space = VSpace(VSpace::MEDSKIP); break;
 121                 case 3: space = VSpace(VSpace::BIGSKIP); break;
 122                 case 4: space = VSpace(VSpace::VFILL); break;
 123                 case 5: space = VSpace(GlueLength(widgetsToLength(value, unit))); break;
 124         }
 125
 126         space.setKeep(keep);
 127         return space;
 128 }
 129
 130
 131 docstring GuiVSpace::dialogToParams() const
 132 {
 133         // If a vspace choice is "Length" but there's no text in
 134         // the input field, do not insert a vspace at all.
 135         if (spacingCO->currentIndex() == 5 && valueLE->text().isEmpty())
 136                 return docstring();
 137
 138         VSpace const params = setVSpaceFromWidgets(spacingCO->currentIndex(),
 139                         valueLE, unitCO, keepCB->isChecked());
 140         return from_ascii(InsetVSpace::params2string(params));
 141 }
 142
 143
 144 void GuiVSpace::paramsToDialog(Inset const * inset)
 145 {
 146         InsetVSpace const * vs = static_cast<InsetVSpace const *>(inset);
 147         VSpace const & params = vs->space();
 148         setWidgetsFromVSpace(params, spacingCO, valueLE, unitCO, keepCB);
 149         enableCustom(spacingCO->currentIndex());
 150 }
 151
 152
 153 bool GuiVSpace::checkWidgets(bool readonly) const
 154 {
 155         valueLE->setReadOnly(readonly);
 156         keepCB->setEnabled(!readonly);
 157
 158         if (readonly) {
 159                 spacingCO->setEnabled(false);
 160                 unitCO->setEnabled(false);
 161         } else {
 162                 bool const enable = (spacingCO->currentIndex() == 5);
 163                 valueLE->setEnabled(enable);
 164                 valueL->setEnabled(enable);
 165                 unitCO->setEnabled(enable);
 166         }
 167
 168         return InsetParamsWidget::checkWidgets();
 169 }
 170
 171 } // namespace frontend
 172 } // namespace lyx
 173
 174
 175 #include "moc_GuiVSpace.cpp"