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100 lines
2.7 KiB
100 lines
2.7 KiB
/*
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* Copyright (C) 2013 Open Education Foundation
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*
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* Copyright (C) 2010-2013 Groupement d'Intérêt Public pour
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* l'Education Numérique en Afrique (GIP ENA)
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*
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* This file is part of OpenBoard.
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*
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* OpenBoard is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, version 3 of the License,
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* with a specific linking exception for the OpenSSL project's
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* "OpenSSL" library (or with modified versions of it that use the
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* same license as the "OpenSSL" library).
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*
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* OpenBoard is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with OpenBoard. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "UBMousePressFilter.h"
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#include "core/memcheck.h"
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UBMousePressFilter::UBMousePressFilter(QObject* parent)
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: QObject(parent)
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, mPendingEvent(0)
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{
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// NOOP
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}
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UBMousePressFilter::~UBMousePressFilter()
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{
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// NOOP
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}
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bool UBMousePressFilter::eventFilter(QObject *obj, QEvent *event)
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{
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const bool isMousePress = event->type() == QEvent::MouseButtonPress;
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const bool isMouseRelease = event->type() == QEvent::MouseButtonRelease;
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const bool isMouseMove = event->type() == QEvent::MouseMove;
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if (isMousePress)
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{
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QMouseEvent * mouseEvent = static_cast<QMouseEvent *>(event);
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if (mouseEvent)
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{
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if (mPendingEvent)
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{
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delete mPendingEvent;
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}
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mPendingEvent = new QMouseEvent(QEvent::MouseButtonDblClick,
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mouseEvent->pos(), mouseEvent->globalPos(),
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mouseEvent->button(), mouseEvent->buttons(),
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mouseEvent->modifiers());
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mObject = obj;
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QTimer::singleShot(1000, this, SLOT(mouseDownElapsed()));
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}
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}
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else if (isMouseRelease || isMouseMove)
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{
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if (mPendingEvent)
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{
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QTabletEvent * tabletEvent = static_cast<QTabletEvent *>(event);
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QPoint point = tabletEvent->globalPos() - mPendingEvent->globalPos();
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if (isMouseRelease || point.manhattanLength() > QApplication::startDragDistance())
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{
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delete mPendingEvent;
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mPendingEvent = 0;
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mObject = 0;
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}
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}
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}
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return false;
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}
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void UBMousePressFilter::mouseDownElapsed()
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{
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if (mPendingEvent && mObject)
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{
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QApplication::postEvent(mObject, mPendingEvent);
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mPendingEvent = 0;
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mObject = 0;
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}
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}
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