summaryrefslogtreecommitdiffstats
path: root/src/declarative/graphicsitems/qdeclarativeflickable_p.h
blob: a14cc1c11b6809bcbd91a303f82be3b7b1d638b8 (plain)
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
216
217
218
219
220
221
222
223
224
225
226
227
228
229
/****************************************************************************
**
** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtDeclarative module 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 QDECLARATIVEFLICKABLE_H
#define QDECLARATIVEFLICKABLE_H

#include "qdeclarativeitem.h"

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

QT_MODULE(Declarative)

class QDeclarativeFlickablePrivate;
class QDeclarativeFlickableVisibleArea;
class Q_AUTOTEST_EXPORT QDeclarativeFlickable : public QDeclarativeItem
{
    Q_OBJECT

    Q_PROPERTY(qreal contentWidth READ contentWidth WRITE setContentWidth NOTIFY contentWidthChanged)
    Q_PROPERTY(qreal contentHeight READ contentHeight WRITE setContentHeight NOTIFY contentHeightChanged)
    Q_PROPERTY(qreal contentX READ contentX WRITE setContentX NOTIFY contentXChanged)
    Q_PROPERTY(qreal contentY READ contentY WRITE setContentY NOTIFY contentYChanged)
    Q_PROPERTY(QDeclarativeItem *contentItem READ contentItem CONSTANT)

    Q_PROPERTY(qreal horizontalVelocity READ horizontalVelocity NOTIFY horizontalVelocityChanged)
    Q_PROPERTY(qreal verticalVelocity READ verticalVelocity NOTIFY verticalVelocityChanged)

    Q_PROPERTY(BoundsBehavior boundsBehavior READ boundsBehavior WRITE setBoundsBehavior NOTIFY boundsBehaviorChanged)
    Q_PROPERTY(qreal maximumFlickVelocity READ maximumFlickVelocity WRITE setMaximumFlickVelocity NOTIFY maximumFlickVelocityChanged)
    Q_PROPERTY(qreal flickDeceleration READ flickDeceleration WRITE setFlickDeceleration NOTIFY flickDecelerationChanged)
    Q_PROPERTY(bool moving READ isMoving NOTIFY movingChanged)
    Q_PROPERTY(bool movingHorizontally READ isMovingHorizontally NOTIFY movingHorizontallyChanged)
    Q_PROPERTY(bool movingVertically READ isMovingVertically NOTIFY movingVerticallyChanged)
    Q_PROPERTY(bool flicking READ isFlicking NOTIFY flickingChanged)
    Q_PROPERTY(bool flickingHorizontally READ isFlickingHorizontally NOTIFY flickingHorizontallyChanged)
    Q_PROPERTY(bool flickingVertically READ isFlickingVertically NOTIFY flickingVerticallyChanged)
    Q_PROPERTY(FlickableDirection flickableDirection READ flickableDirection WRITE setFlickableDirection NOTIFY flickableDirectionChanged)

    Q_PROPERTY(bool interactive READ isInteractive WRITE setInteractive NOTIFY interactiveChanged)
    Q_PROPERTY(int pressDelay READ pressDelay WRITE setPressDelay NOTIFY pressDelayChanged)

    Q_PROPERTY(bool atXEnd READ isAtXEnd NOTIFY isAtBoundaryChanged)
    Q_PROPERTY(bool atYEnd READ isAtYEnd NOTIFY isAtBoundaryChanged)
    Q_PROPERTY(bool atXBeginning READ isAtXBeginning NOTIFY isAtBoundaryChanged)
    Q_PROPERTY(bool atYBeginning READ isAtYBeginning NOTIFY isAtBoundaryChanged)

    Q_PROPERTY(QDeclarativeFlickableVisibleArea *visibleArea READ visibleArea CONSTANT)

    Q_PROPERTY(QDeclarativeListProperty<QObject> flickableData READ flickableData)
    Q_PROPERTY(QDeclarativeListProperty<QGraphicsObject> flickableChildren READ flickableChildren)
    Q_CLASSINFO("DefaultProperty", "flickableData")

    Q_ENUMS(FlickableDirection)
    Q_ENUMS(BoundsBehavior)

public:
    QDeclarativeFlickable(QDeclarativeItem *parent=0);
    ~QDeclarativeFlickable();

    QDeclarativeListProperty<QObject> flickableData();
    QDeclarativeListProperty<QGraphicsObject> flickableChildren();

    enum BoundsBehavior { StopAtBounds, DragOverBounds, DragAndOvershootBounds };
    BoundsBehavior boundsBehavior() const;
    void setBoundsBehavior(BoundsBehavior);

    qreal contentWidth() const;
    void setContentWidth(qreal);

    qreal contentHeight() const;
    void setContentHeight(qreal);

    qreal contentX() const;
    virtual void setContentX(qreal pos);

    qreal contentY() const;
    virtual void setContentY(qreal pos);

    bool isMoving() const;
    bool isMovingHorizontally() const;
    bool isMovingVertically() const;
    bool isFlicking() const;
    bool isFlickingHorizontally() const;
    bool isFlickingVertically() const;

    int pressDelay() const;
    void setPressDelay(int delay);

    qreal maximumFlickVelocity() const;
    void setMaximumFlickVelocity(qreal);

    qreal flickDeceleration() const;
    void setFlickDeceleration(qreal);

    bool isInteractive() const;
    void setInteractive(bool);

    qreal horizontalVelocity() const;
    qreal verticalVelocity() const;

    bool isAtXEnd() const;
    bool isAtXBeginning() const;
    bool isAtYEnd() const;
    bool isAtYBeginning() const;

    QDeclarativeItem *contentItem();

    enum FlickableDirection { AutoFlickDirection=0x00, HorizontalFlick=0x01, VerticalFlick=0x02, HorizontalAndVerticalFlick=0x03 };
    FlickableDirection flickableDirection() const;
    void setFlickableDirection(FlickableDirection);

    Q_INVOKABLE Q_REVISION(1) void resizeContent(qreal w, qreal h, QPointF center);
    Q_INVOKABLE Q_REVISION(1) void returnToBounds();

Q_SIGNALS:
    void contentWidthChanged();
    void contentHeightChanged();
    void contentXChanged();
    void contentYChanged();
    void movingChanged();
    void movingHorizontallyChanged();
    void movingVerticallyChanged();
    void flickingChanged();
    void flickingHorizontallyChanged();
    void flickingVerticallyChanged();
    void horizontalVelocityChanged();
    void verticalVelocityChanged();
    void isAtBoundaryChanged();
    void flickableDirectionChanged();
    void interactiveChanged();
    void boundsBehaviorChanged();
    void maximumFlickVelocityChanged();
    void flickDecelerationChanged();
    void pressDelayChanged();
    void movementStarted();
    void movementEnded();
    void flickStarted();
    void flickEnded();

protected:
    virtual bool sceneEventFilter(QGraphicsItem *, QEvent *);
    void mousePressEvent(QGraphicsSceneMouseEvent *event);
    void mouseMoveEvent(QGraphicsSceneMouseEvent *event);
    void mouseReleaseEvent(QGraphicsSceneMouseEvent *event);
    void wheelEvent(QGraphicsSceneWheelEvent *event);
    void timerEvent(QTimerEvent *event);

    QDeclarativeFlickableVisibleArea *visibleArea();

protected Q_SLOTS:
    virtual void ticked();
    void movementStarting();
    void movementEnding();

protected:
    void movementXEnding();
    void movementYEnding();
    virtual qreal minXExtent() const;
    virtual qreal minYExtent() const;
    virtual qreal maxXExtent() const;
    virtual qreal maxYExtent() const;
    qreal vWidth() const;
    qreal vHeight() const;
    virtual void viewportMoved();
    virtual void geometryChanged(const QRectF &newGeometry,
                                 const QRectF &oldGeometry);
    bool sceneEvent(QEvent *event);
    bool sendMouseEvent(QGraphicsSceneMouseEvent *event);

    bool xflick() const;
    bool yflick() const;
    void cancelFlick();

protected:
    QDeclarativeFlickable(QDeclarativeFlickablePrivate &dd, QDeclarativeItem *parent);

private:
    Q_DISABLE_COPY(QDeclarativeFlickable)
    Q_DECLARE_PRIVATE_D(QGraphicsItem::d_ptr.data(), QDeclarativeFlickable)
    friend class QDeclarativeFlickableVisibleArea;
};

QT_END_NAMESPACE

QML_DECLARE_TYPE(QDeclarativeFlickable)

QT_END_HEADER

#endif