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/****************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: qt-info@nokia.com
**
** This software, including documentation, is protected by copyright
** controlled by Nokia Corporation. You may use this software in
** accordance with the terms and conditions contained in the Qt Phone
** Demo License Agreement.
**
****************************************************************************/
#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
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