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InputDispatcherFilter.h
/*
* Copyright (C) 2016 Canonical Ltd.
*
* This program is free software: you can redistribute it and/or modify it under
* the terms of the GNU Lesser General Public License version 3, as published by
* the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranties of MERCHANTABILITY,
* SATISFACTORY QUALITY, or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef INPUTDISPATCHERFILTER_H
#define INPUTDISPATCHERFILTER_H
#include <QObject>
#include <QPointF>
#include <QSet>
class MousePointer;
class QScreen;
class InputDispatcherFilter : public QObject
{
Q_OBJECT
public:
static InputDispatcherFilter *instance();
void registerPointer(MousePointer* pointer);
void unregisterPointer(MousePointer* pointer);
Q_SIGNALS:
void pushedLeftBoundary(QScreen* screen, qreal amount, Qt::MouseButtons buttons);
void pushedRightBoundary(QScreen* screen, qreal amount, Qt::MouseButtons buttons);
void pushedTopBoundary(QScreen* screen, qreal amount, Qt::MouseButtons buttons);
void pushedTopLeftCorner(QScreen* screen, qreal amount, Qt::MouseButtons buttons);
void pushedTopRightCorner(QScreen* screen, qreal amount, Qt::MouseButtons buttons);
void pushedBottomLeftCorner(QScreen* screen, qreal amount, Qt::MouseButtons buttons);
void pushedBottomRightCorner(QScreen* screen, qreal amount, Qt::MouseButtons buttons);
void pushStopped(QScreen* screen);
protected:
InputDispatcherFilter(QObject* parent = nullptr);
bool eventFilter(QObject *o, QEvent *e) override;
QPointF adjustedPositionForMovement(const QPointF& pt, const QPointF& movement) const;
QScreen* screenAt(const QPointF& pt) const;
MousePointer* currentPointer() const;
private:
QObject* m_inputDispatcher;
QSet<MousePointer*> m_pointers;
bool m_pushing;
};
#endif // INPUTDISPATCHERFILTER_H