1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
|
/****************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QML Touch Area plugin of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** 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
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QDECLARATIVETOUCHAREA_H
#define QDECLARATIVETOUCHAREA_H
#include "qdeclarativeitem.h"
#include "qevent.h"
#include <QMap>
#include <QList>
#include <QDeclarativeScriptString>
class QDeclarativeTouchPoint : public QObject {
Q_OBJECT
Q_PROPERTY(int id READ id)
Q_PROPERTY(qreal x READ x NOTIFY xChanged)
Q_PROPERTY(qreal y READ y NOTIFY yChanged)
Q_PROPERTY(qreal sceneX READ sceneX NOTIFY sceneXChanged)
Q_PROPERTY(qreal sceneY READ sceneY NOTIFY sceneYChanged)
Q_PROPERTY(bool valid READ isValid NOTIFY validityChanged)
public:
QDeclarativeTouchPoint(bool qmlReference = true)
: _id(0),
_x(0.0),
_y(0.0),
_sceneX(0.0),
_sceneY(0.0),
_qmlReferenced(qmlReference),
_valid(!qmlReference)
{}
int id() const { return _id; }
void setId(int id) { _id = id; }
qreal x() const { return _x; }
void setX(qreal x) {
_x = x;
emit(xChanged());
}
qreal y() const { return _y; }
void setY(qreal y) {
_y = y;
emit(yChanged());
}
qreal sceneX() const { return _sceneX; }
void setSceneX(qreal sceneX) {
_sceneX = sceneX;
emit(sceneXChanged());
}
qreal sceneY() const { return _sceneY; }
void setSceneY(qreal sceneY) {
_sceneY = sceneY;
emit(sceneYChanged());
}
bool isQmlReferenced() { return _qmlReferenced; }
bool isValid() { return _valid; }
void setValid(bool valid) {
_valid = valid;
emit(validityChanged());
}
Q_SIGNALS:
void xChanged();
void yChanged();
void sceneXChanged();
void sceneYChanged();
void validityChanged();
private:
int _id;
qreal _x;
qreal _y;
qreal _sceneX;
qreal _sceneY;
bool _qmlReferenced;
bool _valid;
};
class QDeclarativeTouchArea : public QDeclarativeItem
{
Q_OBJECT
Q_PROPERTY(QList<QObject*> touches READ touches)
Q_PROPERTY(QList<QObject*> changedTouches READ changedTouches)
Q_PROPERTY(QDeclarativeListProperty<QDeclarativeTouchPoint> touchPoints READ touchPoints NOTIFY touchPointsChanged)
Q_PROPERTY(int minimumTouches READ minimumTouches WRITE setMinimumTouches)
Q_PROPERTY(int maximumTouches READ maximumTouches WRITE setMaximumTouches)
Q_PROPERTY(qreal scaleFactor READ scaleFactor NOTIFY scaleFactorChanged)
Q_PROPERTY(qreal rotationAngle READ rotationAngle NOTIFY rotationAngleChanged)
Q_PROPERTY(QDeclarativeScriptString keepMouseFocus READ keepMouseFocus WRITE setKeepMouseFocus)
public:
QDeclarativeTouchArea(QDeclarativeItem *parent=0);
~QDeclarativeTouchArea();
int minimumTouches() const { return _minimumTouches; }
void setMinimumTouches(int num) { _minimumTouches = num; }
int maximumTouches() const { return _maximumTouches; }
void setMaximumTouches(int num) { _maximumTouches = num; }
qreal scaleFactor() const { return _scaleFactor; }
qreal rotationAngle() const { return _rotationAngle; }
QDeclarativeScriptString keepMouseFocus() const { return _keepMouseFocus; }
void setKeepMouseFocus(const QDeclarativeScriptString &keep) { _keepMouseFocus = keep; }
QList<QObject*> touches() { return _touches.values(); }
QList<QObject*> changedTouches() { return _changedTouches.values(); }
QDeclarativeListProperty<QDeclarativeTouchPoint> touchPoints() {
return QDeclarativeListProperty<QDeclarativeTouchPoint>(this, 0, QDeclarativeTouchArea::touchPoint_append, QDeclarativeTouchArea::touchPoint_count, QDeclarativeTouchArea::touchPoint_at, 0);
}
static void touchPoint_append(QDeclarativeListProperty<QDeclarativeTouchPoint> *list, QDeclarativeTouchPoint* touch) {
QDeclarativeTouchArea *q = static_cast<QDeclarativeTouchArea*>(list->object);
q->addTouchPrototype(touch);
}
static int touchPoint_count(QDeclarativeListProperty<QDeclarativeTouchPoint> *list) {
QDeclarativeTouchArea *q = static_cast<QDeclarativeTouchArea*>(list->object);
return q->_touchPrototypes.count();
}
static QDeclarativeTouchPoint* touchPoint_at(QDeclarativeListProperty<QDeclarativeTouchPoint> *list, int index) {
QDeclarativeTouchArea *q = static_cast<QDeclarativeTouchArea*>(list->object);
return static_cast<QDeclarativeTouchPoint*>(q->_touchPrototypes[index]);
}
Q_SIGNALS:
void touchStart();
void touchMove();
void touchEnd();
void touchPointsChanged();
void scaleFactorChanged();
void rotationAngleChanged();
protected:
bool sceneEvent(QEvent *);
void updateTouchPoint(QDeclarativeTouchPoint*, const QTouchEvent::TouchPoint*);
void updatePinch(QList<QTouchEvent::TouchPoint> *touchPoints);
void addTouchPrototype(QDeclarativeTouchPoint* prototype);
void addTouchPoint(const QTouchEvent::TouchPoint *p);
void clearChangedAndReleasedTouches();
void updateTopTouchArea();
void updateTouchData(QEvent*);
bool event(QEvent *event);
bool sceneEventFilter(QGraphicsItem *i, QEvent *event);
private:
QMap<int,QObject*> _touchPrototypes;
QMap<int,QObject*> _touches;
QMap<int,QObject*> _changedTouches;
QList<QObject*> _releasedTouches;
int _minimumTouches;
int _maximumTouches;
qreal _scaleFactor;
qreal _rotationAngle;
QDeclarativeTouchArea* _parentTouchArea;
bool _active;
bool _stealMouse;
QDeclarativeScriptString _keepMouseFocus;
};
QML_DECLARE_TYPE(QDeclarativeTouchPoint)
#endif // QDECLARATIVETOUCHAREA_H
|
