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/*
* Copyright (C) 2011 Canonical, Ltd.
*
* Authors:
* Florian Boucault <florian.boucault@canonical.com>
*
* 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; version 3.
*
* 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 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/>.
*/
#ifndef GESTUREHANDLER_H
#define GESTUREHANDLER_H
#include <QObject>
#include <QHash>
#include <QMetaType>
extern "C" {
#include <geis/geis.h>
}
class GestureHandler : public QObject
{
Q_OBJECT
Q_PROPERTY(double dragDelta READ dragDelta NOTIFY dragDeltaChanged)
Q_PROPERTY(bool isDragging READ isDragging NOTIFY isDraggingChanged)
public:
explicit GestureHandler(QObject *parent = 0);
~GestureHandler();
double dragDelta() const;
bool isDragging() const;
Q_SIGNALS:
void dragDeltaChanged();
void isDraggingChanged();
private Q_SLOTS:
void geisEventDispatch();
private:
GeisStatus geisInitialize();
GeisStatus geisStartEventDispatching();
GeisStatus geisSubscribeGestures();
static QHash<QString, GeisGestureAttr> parseGestureAttributes(GeisSize attr_count, GeisGestureAttr *attrs);
static void staticGestureStart(void *gestureHandler, GeisGestureType type, GeisGestureId id,
GeisSize attr_count, GeisGestureAttr *attrs);
static void staticGestureUpdate(void *gestureHandler, GeisGestureType type, GeisGestureId id,
GeisSize attr_count, GeisGestureAttr *attrs);
static void staticGestureFinish(void *gestureHandler, GeisGestureType type, GeisGestureId id,
GeisSize attr_count, GeisGestureAttr *attrs);
void gestureStart(GeisGestureType type, GeisGestureId id, QHash<QString, GeisGestureAttr> attributes);
void gestureUpdate(GeisGestureType type, GeisGestureId id, QHash<QString, GeisGestureAttr> attributes);
void gestureFinish(GeisGestureType type, GeisGestureId id, QHash<QString, GeisGestureAttr> attributes);
GeisInstance m_geisInstance;
GeisGestureFuncs m_gestureFuncs;
float m_pinchPreviousRadius;
int m_pinchPreviousTimestamp;
float m_dragDelta;
bool m_isDragging;
};
Q_DECLARE_METATYPE(GestureHandler*)
#endif // GESTUREHANDLER_H
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