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 #include <QKeyEvent>
  30 #include <QShowEvent>
  31
  32 #include "support/qstring_helpers.h"
  33
  34
  35 using lyx::KeySymbol;
  36 using lyx::KeySequence;
  37 using lyx::KeyModifier;
  38 using lyx::toqstr;
  39
  40 namespace lyx {
  41 namespace frontend {
  42
  43 ShortcutLineEdit::ShortcutLineEdit(QWidget * parent)
  44         : QLineEdit(parent), keysequence_()
  45 {
  46         QApplication::instance()->installEventFilter(this);
  47         has_cursor_ = false;
  48 }
  49
  50
  51 void ShortcutLineEdit::reset()
  52 {
  53         clear();
  54         keysequence_ = KeySequence();
  55 }
  56
  57
  58 bool ShortcutLineEdit::eventFilter(QObject * obj, QEvent * e)
  59 {
  60         if (!has_cursor_)
  61                 return false;
  62
  63         switch (e->type()) {
  64                 // swallow these if we have focus and they come from elsewhere
  65                 case QEvent::Shortcut:
  66                 case QEvent::ShortcutOverride:
  67                         if (obj != this)
  68                                 return true;
  69                 default:
  70                         break;
  71         }
  72         return false;
  73 }
  74
  75
  76 KeySequence const ShortcutLineEdit::getKeySequence() const
  77 {
  78         return keysequence_;
  79 }
  80
  81
  82 void ShortcutLineEdit::keyPressEvent(QKeyEvent * e)
  83 {
  84         int const keyQt = e->key();
  85         if (!keyQt)
  86                 return;
  87
  88         switch(keyQt) {
  89                 case Qt::Key_AltGr: //or else we get unicode salad
  90                 case Qt::Key_Shift:
  91                 case Qt::Key_Control:
  92                 case Qt::Key_Alt:
  93                 case Qt::Key_Meta:
  94                         break;
  95                 default:
  96                         appendToSequence(e);
  97                         setText(toqstr(keysequence_.print(KeySequence::ForGui)));
  98         }
  99 }
 100
 101
 102 bool ShortcutLineEdit::event(QEvent * e)
 103 {
 104         switch (e->type()) {
 105                 case QEvent::FocusOut:
 106                         has_cursor_ = false;
 107                         break;
 108                 case QEvent::FocusIn:
 109                         has_cursor_ = true;
 110                         break;
 111                 case QEvent::ShortcutOverride:
 112                         keyPressEvent(static_cast<QKeyEvent *>(e));
 113                         return true;
 114                 case QEvent::KeyRelease:
 115                 case QEvent::Shortcut:
 116                 case QEvent::KeyPress:
 117                         return true;
 118                 default:
 119                         break;
 120         }
 121         return QLineEdit::event(e);
 122 }
 123
 124
 125 void ShortcutLineEdit::appendToSequence(QKeyEvent * e)
 126 {
 127         KeySymbol sym;
 128         setKeySymbol(&sym, e);
 129
 130         KeyModifier mod = lyx::q_key_state(e->modifiers());
 131
 132         keysequence_.addkey(sym, mod, lyx::NoModifier);
 133 }
 134
 135 } // namespace frontend
 136 } // namespace lyx
 137
 138 #include "CustomizedWidgets_moc.cpp"