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/***************************************************************************
* copyright : (C) 2003-2009 by Pascal Brachet *
* http://www.xm1math.net/texmaker/ *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************/
#include "keysequencedialog.h"
#include <QMenu>
#include <QEvent>
#include <QAction>
#include <QContextMenuEvent>
KeySequenceDialog::KeySequenceDialog(QWidget *parent)
: QDialog( parent), m_num(0)
{
setModal(true);
ui.setupUi(this);
ui.lineEdit->installEventFilter(this);
ui.lineEdit->setReadOnly(true);
ui.lineEdit->setFocusProxy(this);
setFocusPolicy(ui.lineEdit->focusPolicy());
setAttribute(Qt::WA_InputMethodEnabled);
connect( ui.pushButtonClear, SIGNAL( clicked() ), this, SLOT( slotClearShortcut() ) );
}
KeySequenceDialog::~KeySequenceDialog()
{
}
bool KeySequenceDialog::eventFilter(QObject *o, QEvent *e)
{
if (o == ui.lineEdit && e->type() == QEvent::ContextMenu) {
QContextMenuEvent *c = static_cast<QContextMenuEvent *>(e);
QMenu *menu = new QMenu(ui.lineEdit);
QAction *clearAction = new QAction(tr("Clear"), menu);
menu->addAction(clearAction);
clearAction->setEnabled(!m_keySequence.isEmpty());
connect(clearAction, SIGNAL(triggered()), this, SLOT(slotClearShortcut()));
menu->exec(c->globalPos());
delete menu;
e->accept();
return true;
}
return QWidget::eventFilter(o, e);
}
void KeySequenceDialog::slotClearShortcut()
{
if (m_keySequence.isEmpty())
return;
setKeySequence(QKeySequence());
emit keySequenceChanged(m_keySequence);
}
void KeySequenceDialog::handleKeyEvent(QKeyEvent *e)
{
int nextKey = e->key();
if (nextKey == Qt::Key_Control || nextKey == Qt::Key_Shift ||
nextKey == Qt::Key_Meta || nextKey == Qt::Key_Alt ||
nextKey == Qt::Key_Super_L || nextKey == Qt::Key_AltGr)
return;
nextKey |= translateModifiers(e->modifiers(), e->text());
int k0 = m_keySequence[0];
int k1 = m_keySequence[1];
int k2 = m_keySequence[2];
int k3 = m_keySequence[3];
switch (m_num) {
case 0: k0 = nextKey; k1 = 0; k2 = 0; k3 = 0; break;
case 1: k1 = nextKey; k2 = 0; k3 = 0; break;
case 2: k2 = nextKey; k3 = 0; break;
case 3: k3 = nextKey; break;
default: break;
}
++m_num;
if (m_num > 3)
m_num = 0;
m_keySequence = QKeySequence(k0, k1, k2, k3);
ui.lineEdit->setText(m_keySequence.toString(QKeySequence::PortableText));
e->accept();
emit keySequenceChanged(m_keySequence);
}
void KeySequenceDialog::setKeySequence(const QKeySequence &sequence)
{
if (sequence == m_keySequence)
return;
m_num = 0;
m_keySequence = sequence;
ui.lineEdit->setText(m_keySequence.toString(QKeySequence::PortableText));
}
QKeySequence KeySequenceDialog::keySequence() const
{
return m_keySequence;
}
int KeySequenceDialog::translateModifiers(Qt::KeyboardModifiers state, const QString &text) const
{
int result = 0;
if ((state & Qt::ShiftModifier) && (text.size() == 0 || !text.at(0).isPrint() || text.at(0).isLetter() || text.at(0).isSpace()))
result |= Qt::SHIFT;
if (state & Qt::ControlModifier)
result |= Qt::CTRL;
if (state & Qt::MetaModifier)
result |= Qt::META;
if (state & Qt::AltModifier)
result |= Qt::ALT;
return result;
}
void KeySequenceDialog::focusInEvent(QFocusEvent *e)
{
ui.lineEdit->event(e);
ui.lineEdit->selectAll();
QWidget::focusInEvent(e);
}
void KeySequenceDialog::focusOutEvent(QFocusEvent *e)
{
m_num = 0;
ui.lineEdit->event(e);
QWidget::focusOutEvent(e);
}
void KeySequenceDialog::keyPressEvent(QKeyEvent *e)
{
handleKeyEvent(e);
e->accept();
}
void KeySequenceDialog::keyReleaseEvent(QKeyEvent *e)
{
ui.lineEdit->event(e);
}
bool KeySequenceDialog::event(QEvent *e)
{
if (e->type() == QEvent::Shortcut ||
e->type() == QEvent::ShortcutOverride ||
e->type() == QEvent::KeyRelease) {
e->accept();
return true;
}
return QWidget::event(e);
}
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