/* * Copyright (C) 2015-2018 Département de l'Instruction Publique (DIP-SEM) * * Copyright (C) 2013 Open Education Foundation * * Copyright (C) 2010-2013 Groupement d'Intérêt Public pour * l'Education Numérique en Afrique (GIP ENA) * * This file is part of OpenBoard. * * OpenBoard 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, version 3 of the License, * with a specific linking exception for the OpenSSL project's * "OpenSSL" library (or with modified versions of it that use the * same license as the "OpenSSL" library). * * OpenBoard 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 for more details. * * You should have received a copy of the GNU General Public License * along with OpenBoard. If not, see <http://www.gnu.org/licenses/>. */ #include <QApplication> #include "UBMousePressFilter.h" #include "core/memcheck.h" UBMousePressFilter::UBMousePressFilter(QObject* parent) : QObject(parent) , mPendingEvent(0) { // NOOP } UBMousePressFilter::~UBMousePressFilter() { // NOOP } bool UBMousePressFilter::eventFilter(QObject *obj, QEvent *event) { const bool isMousePress = event->type() == QEvent::MouseButtonPress; const bool isMouseRelease = event->type() == QEvent::MouseButtonRelease; const bool isMouseMove = event->type() == QEvent::MouseMove; if (isMousePress) { QMouseEvent * mouseEvent = static_cast<QMouseEvent *>(event); if (mouseEvent) { if (mPendingEvent) { delete mPendingEvent; } mPendingEvent = new QMouseEvent(QEvent::MouseButtonDblClick, mouseEvent->pos(), mouseEvent->globalPos(), mouseEvent->button(), mouseEvent->buttons(), mouseEvent->modifiers()); mObject = obj; QTimer::singleShot(1000, this, SLOT(mouseDownElapsed())); } } else if (isMouseRelease || isMouseMove) { if (mPendingEvent) { QTabletEvent * tabletEvent = static_cast<QTabletEvent *>(event); QPoint point = tabletEvent->globalPos() - mPendingEvent->globalPos(); if (isMouseRelease || point.manhattanLength() > QApplication::startDragDistance()) { delete mPendingEvent; mPendingEvent = 0; mObject = 0; } } } return false; } void UBMousePressFilter::mouseDownElapsed() { if (mPendingEvent && mObject) { QApplication::postEvent(mObject, mPendingEvent); mPendingEvent = 0; mObject = 0; } }