sdrangel/sdrgui/gui/commandkeyreceiver.cpp

89 wiersze
3.3 KiB
C++

///////////////////////////////////////////////////////////////////////////////////
// Copyright (C) 2018 Edouard Griffiths, F4EXB //
// //
// 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 as version 3 of the License, or //
// (at your option) any later version. //
// //
// This program is distributed in the hope that it will be useful, //
// but WITHOUT ANY WARRANTY; without even the implied warranty of //
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
// GNU General Public License V3 for more details. //
// //
// You should have received a copy of the GNU General Public License //
// along with this program. If not, see <http://www.gnu.org/licenses/>. //
///////////////////////////////////////////////////////////////////////////////////
#include <gui/commandkeyreceiver.h>
#include <QEvent>
#include <QKeyEvent>
const std::vector<Qt::Key> CommandKeyReceiver::m_composeKeys = {Qt::Key_Shift, Qt::Key_Control, Qt::Key_Meta, Qt::Key_Alt, Qt::Key_AltGr};
CommandKeyReceiver::CommandKeyReceiver() :
m_release(false),
m_pass(true)
{
}
bool CommandKeyReceiver::eventFilter(QObject* obj, QEvent* event)
{
if (event->type() == QEvent::KeyPress)
{
QKeyEvent* keyEvent = static_cast<QKeyEvent*>(event);
if ((!keyEvent->isAutoRepeat()) && (!isComposeKey(static_cast<Qt::Key>(keyEvent->key()))))
{
// qDebug("KeyReceiver::eventFilter: KeyPress");
Qt::Key key;
Qt::KeyboardModifiers keyModifiers;
keyEventHandler(keyEvent, key, keyModifiers);
emit capturedKey(key, keyModifiers, false);
if (!m_pass) { // do not pass the event
return true;
}
}
}
else if (m_release && (event->type()==QEvent::KeyRelease))
{
QKeyEvent* keyEvent = static_cast<QKeyEvent*>(event);
if ((!keyEvent->isAutoRepeat()) && (!isComposeKey(static_cast<Qt::Key>(keyEvent->key()))))
{
// qDebug("KeyReceiver::eventFilter: KeyRelease");
Qt::Key key;
Qt::KeyboardModifiers keyModifiers;
keyEventHandler(keyEvent, key, keyModifiers);
emit capturedKey(key, keyModifiers, true);
if (!m_pass) { // do not pass the event
return true;
}
}
}
return QObject::eventFilter(obj, event); // pass the event on
}
void CommandKeyReceiver::keyEventHandler(QKeyEvent *e, Qt::Key& key, Qt::KeyboardModifiers& keyModifiers)
{
key = static_cast<Qt::Key>(e->key());
if (e->modifiers())
{
keyModifiers = e->modifiers();
}
else
{
keyModifiers = Qt::NoModifier;
}
}
bool CommandKeyReceiver::isComposeKey(Qt::Key key)
{
auto it = std::find(m_composeKeys.begin(), m_composeKeys.end(), key);
return it != m_composeKeys.end();
}