src/frontends/qt4/CustomizedWidgets.cpp

   1 /**
   2  * \file GuiPrefs.cpp
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author Bo Peng
   7  * \author Edwin Leuven
   8  *
   9  * Full author contact details are available in file CREDITS.
  10  */
  11
  12 /*
  13         The code for the ShortcutLineEdit class was adapted from
  14         kkeysequencewidget.cpp, which is part of the KDE libraries.
  15         Copyright (C) 1998 Mark Donohoe <donohoe@kde.org>
  16         Copyright (C) 2001 Ellis Whitehead <ellis@kde.org>
  17         Copyright (C) 2007 Andreas Hartmetz <ahartmetz@gmail.com>
  18         Licensed under version 2 of the General Public License and
  19         used here in accordance with the terms of that license.
  20 */
  21
  22 #include <config.h>
  23
  24 #include "CustomizedWidgets.h"
  25 #include "FuncRequest.h"
  26 #include "GuiKeySymbol.h"
  27
  28 #include <QApplication>
  29
  30 #include "support/qstring_helpers.h"
  31
  32
  33 using lyx::KeySymbol;
  34 using lyx::KeySequence;
  35 using lyx::KeyModifier;
  36 using lyx::toqstr;
  37
  38 namespace lyx {
  39 namespace frontend {
  40
  41 ShortcutLineEdit::ShortcutLineEdit(QWidget * parent)
  42         : QLineEdit(parent), keysequence_()
  43 {
  44         QApplication::instance()->installEventFilter(this);
  45         has_cursor_ = false;
  46 }
  47
  48
  49 void ShortcutLineEdit::reset()
  50 {
  51         clear();
  52         keysequence_ = KeySequence();
  53 }
  54
  55
  56 bool ShortcutLineEdit::eventFilter(QObject * obj, QEvent * e)
  57 {
  58         if (!has_cursor_)
  59                 return false;
  60
  61         switch (e->type()) {
  62                 // swallow these if we have focus and they come from elsewhere
  63                 case QEvent::Shortcut:
  64                 case QEvent::ShortcutOverride:
  65                         if (obj != this)
  66                                 return true;
  67                 default:
  68                         break;
  69         }
  70         return false;
  71 }
  72
  73
  74 KeySequence const ShortcutLineEdit::getKeySequence() const
  75 {
  76         return keysequence_;
  77 }
  78
  79
  80 void ShortcutLineEdit::keyPressEvent(QKeyEvent * e)
  81 {
  82         int const keyQt = e->key();
  83         if (!keyQt)
  84                 return;
  85
  86         switch(keyQt) {
  87                 case Qt::Key_AltGr: //or else we get unicode salad
  88                 case Qt::Key_Shift:
  89                 case Qt::Key_Control:
  90                 case Qt::Key_Alt:
  91                 case Qt::Key_Meta:
  92                         break;
  93                 default:
  94                         appendToSequence(e);
  95                         setText(toqstr(keysequence_.print(KeySequence::ForGui)));
  96         }
  97 }
  98
  99
 100 bool ShortcutLineEdit::event(QEvent * e)
 101 {
 102         switch (e->type()) {
 103                 case QEvent::FocusOut:
 104                         has_cursor_ = false;
 105                         break;
 106                 case QEvent::FocusIn:
 107                         has_cursor_ = true;
 108                         break;
 109                 case QEvent::ShortcutOverride:
 110                         keyPressEvent(static_cast<QKeyEvent *>(e));
 111                         return true;
 112                 case QEvent::KeyRelease:
 113                 case QEvent::Shortcut:
 114                 case QEvent::KeyPress:
 115                         return true;
 116                 default:
 117                         break;
 118         }
 119         return QLineEdit::event(e);
 120 }
 121
 122
 123 void ShortcutLineEdit::appendToSequence(QKeyEvent * e)
 124 {
 125         KeySymbol sym;
 126         setKeySymbol(&sym, e);
 127
 128         KeyModifier mod = lyx::q_key_state(e->modifiers());
 129
 130         keysequence_.addkey(sym, mod, lyx::NoModifier);
 131 }
 132
 133 } // namespace frontend
 134 } // namespace lyx
 135
 136 #include "CustomizedWidgets_moc.cpp"