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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: openBossa - INdT (renato.chencarek@openbossa.org)
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights. These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** the openBossa stream from INdT (renato.chencarek@openbossa.org).
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef GESTUREBOX_P_H
+#define GESTUREBOX_P_H
+
+#include <QObject>
+#include <QPointer>
+#include <QTime>
+#include <QPoint>
+#include <QPointF>
+#include <QGraphicsView>
+
+#include "gesturebox.h"
+
+class GestureData : public QObject
+{
+public:
+ inline GestureData(QPoint pos, const QList<GestureBox*> &boxes, QGraphicsView *view,
+ QList<QEvent*> &ignoreList, bool sendClickEvents);
+
+ inline void release(QPoint pos);
+ inline void move(QPoint pos);
+ inline bool ended() const { return m_state == Ended; }
+
+private:
+ enum State {Pressed, Moving, Ended};
+ State m_state;
+ QGraphicsView * const m_view;
+ const QPoint m_pressPos;
+ const QPointF m_scenePressPos;
+ const QList<GestureBox*> m_boxes;
+ QList<QEvent*> &m_ignoreList;
+ QTime m_time;
+ QPointF m_currentScenePos;
+ QPointF m_speed;
+ bool m_sendClickEvents;
+
+ void sendClick();
+};
+
+class ViewData
+{
+public:
+ ViewData(QGraphicsView *view) : m_view(view), m_gesture(0), m_widget(view->viewport()) {}
+ inline ~ViewData();
+
+ inline bool press(QPoint pos);
+ inline bool release(QPoint pos);
+ inline bool move(QPoint pos);
+
+ QGraphicsView *view() { return m_view; }
+ QWidget *widget() { return m_widget; }
+ inline bool ignoreEvent(QEvent *event);
+
+ QList<GestureBox*> m_boxes;
+
+private:
+ QGraphicsView *const m_view;
+ QPointer<GestureData> m_gesture;
+ QList<QEvent*> m_ignored;
+ QWidget * const m_widget;
+
+ inline QList<GestureBox*> getBoxList(QPoint pos);
+ inline bool startGesture(GestureBox *box, QPointF scenePos, bool &sendClick);
+};
+
+class GestureObserver : public QObject
+{
+ Q_OBJECT
+public:
+ static inline GestureObserver *instance();
+ inline void addBox(GestureBox *box);
+ inline void removeBox(GestureBox *box);
+
+protected:
+ bool eventFilter(QObject *object, QEvent *event);
+
+private:
+ QHash<QWidget*, ViewData*> m_views;
+ QHash<GestureBox*, ViewData*> m_boxes;
+
+ GestureObserver() {}
+ ~GestureObserver() {}
+ ViewData *getViewData(QGraphicsView *view);
+
+private slots:
+ void viewDestroyed();
+
+};
+
+#endif // GESTUREBOX_P_H