source: trunk/src/declarative/graphicsitems/qdeclarativeitem.h@ 846

Last change on this file since 846 was 846, checked in by Dmitry A. Kuminov, 14 years ago

trunk: Merged in qt 4.7.2 sources from branches/vendor/nokia/qt.
File size: 8.8 KB
Line 
1/****************************************************************************
2**
3** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
4** All rights reserved.
5** Contact: Nokia Corporation (qt-info@nokia.com)
6**
7** This file is part of the QtDeclarative module of the Qt Toolkit.
8**
9** $QT_BEGIN_LICENSE:LGPL$
10** Commercial Usage
11** Licensees holding valid Qt Commercial licenses may use this file in
12** accordance with the Qt Commercial License Agreement provided with the
13** Software or, alternatively, in accordance with the terms contained in
14** a written agreement between you and Nokia.
15**
16** GNU Lesser General Public License Usage
17** Alternatively, this file may be used under the terms of the GNU Lesser
18** General Public License version 2.1 as published by the Free Software
19** Foundation and appearing in the file LICENSE.LGPL included in the
20** packaging of this file. Please review the following information to
21** ensure the GNU Lesser General Public License version 2.1 requirements
22** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
23**
24** In addition, as a special exception, Nokia gives you certain additional
25** rights. These rights are described in the Nokia Qt LGPL Exception
26** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
27**
28** GNU General Public License Usage
29** Alternatively, this file may be used under the terms of the GNU
30** General Public License version 3.0 as published by the Free Software
31** Foundation and appearing in the file LICENSE.GPL included in the
32** packaging of this file. Please review the following information to
33** ensure the GNU General Public License version 3.0 requirements will be
34** met: http://www.gnu.org/copyleft/gpl.html.
35**
36** If you have questions regarding the use of this file, please contact
37** Nokia at qt-info@nokia.com.
38** $QT_END_LICENSE$
39**
40****************************************************************************/
41
42#ifndef QDECLARATIVEITEM_H
43#define QDECLARATIVEITEM_H
44
45#include <QtDeclarative/qdeclarative.h>
46#include <QtDeclarative/qdeclarativecomponent.h>
47
48#include <QtCore/QObject>
49#include <QtCore/QList>
50#include <QtGui/qgraphicsitem.h>
51#include <QtGui/qgraphicstransform.h>
52#include <QtGui/qfont.h>
53#include <QtGui/qaction.h>
54
55QT_BEGIN_HEADER
56
57QT_BEGIN_NAMESPACE
58
59QT_MODULE(Declarative)
60
61class QDeclarativeState;
62class QDeclarativeAnchorLine;
63class QDeclarativeTransition;
64class QDeclarativeKeyEvent;
65class QDeclarativeAnchors;
66class QDeclarativeItemPrivate;
67class Q_DECLARATIVE_EXPORT QDeclarativeItem : public QGraphicsObject, public QDeclarativeParserStatus
68{
69 Q_OBJECT
70 Q_INTERFACES(QDeclarativeParserStatus)
71
72 Q_PROPERTY(QDeclarativeItem * parent READ parentItem WRITE setParentItem NOTIFY parentChanged DESIGNABLE false FINAL)
73 Q_PRIVATE_PROPERTY(QDeclarativeItem::d_func(), QDeclarativeListProperty<QObject> data READ data DESIGNABLE false)
74 Q_PRIVATE_PROPERTY(QDeclarativeItem::d_func(), QDeclarativeListProperty<QObject> resources READ resources DESIGNABLE false)
75 Q_PRIVATE_PROPERTY(QDeclarativeItem::d_func(), QDeclarativeListProperty<QDeclarativeState> states READ states DESIGNABLE false)
76 Q_PRIVATE_PROPERTY(QDeclarativeItem::d_func(), QDeclarativeListProperty<QDeclarativeTransition> transitions READ transitions DESIGNABLE false)
77 Q_PRIVATE_PROPERTY(QDeclarativeItem::d_func(), QString state READ state WRITE setState NOTIFY stateChanged)
78 Q_PROPERTY(QRectF childrenRect READ childrenRect NOTIFY childrenRectChanged DESIGNABLE false FINAL)
79 Q_PRIVATE_PROPERTY(QDeclarativeItem::d_func(), QDeclarativeAnchors * anchors READ anchors DESIGNABLE false CONSTANT FINAL)
80 Q_PRIVATE_PROPERTY(QDeclarativeItem::d_func(), QDeclarativeAnchorLine left READ left CONSTANT FINAL)
81 Q_PRIVATE_PROPERTY(QDeclarativeItem::d_func(), QDeclarativeAnchorLine right READ right CONSTANT FINAL)
82 Q_PRIVATE_PROPERTY(QDeclarativeItem::d_func(), QDeclarativeAnchorLine horizontalCenter READ horizontalCenter CONSTANT FINAL)
83 Q_PRIVATE_PROPERTY(QDeclarativeItem::d_func(), QDeclarativeAnchorLine top READ top CONSTANT FINAL)
84 Q_PRIVATE_PROPERTY(QDeclarativeItem::d_func(), QDeclarativeAnchorLine bottom READ bottom CONSTANT FINAL)
85 Q_PRIVATE_PROPERTY(QDeclarativeItem::d_func(), QDeclarativeAnchorLine verticalCenter READ verticalCenter CONSTANT FINAL)
86 Q_PRIVATE_PROPERTY(QDeclarativeItem::d_func(), QDeclarativeAnchorLine baseline READ baseline CONSTANT FINAL)
87 Q_PROPERTY(qreal baselineOffset READ baselineOffset WRITE setBaselineOffset NOTIFY baselineOffsetChanged)
88 Q_PROPERTY(bool clip READ clip WRITE setClip NOTIFY clipChanged) // ### move to QGI/QGO, NOTIFY
89 Q_PROPERTY(bool focus READ hasFocus WRITE setFocus NOTIFY focusChanged FINAL)
90 Q_PROPERTY(bool activeFocus READ hasActiveFocus NOTIFY activeFocusChanged)
91 Q_PROPERTY(QDeclarativeListProperty<QGraphicsTransform> transform READ transform DESIGNABLE false FINAL)
92 Q_PROPERTY(TransformOrigin transformOrigin READ transformOrigin WRITE setTransformOrigin NOTIFY transformOriginChanged)
93 Q_PROPERTY(QPointF transformOriginPoint READ transformOriginPoint) // transformOriginPoint is read-only for Item
94 Q_PROPERTY(bool smooth READ smooth WRITE setSmooth NOTIFY smoothChanged)
95 Q_ENUMS(TransformOrigin)
96 Q_CLASSINFO("DefaultProperty", "data")
97
98public:
99 enum TransformOrigin {
100 TopLeft, Top, TopRight,
101 Left, Center, Right,
102 BottomLeft, Bottom, BottomRight
103 };
104
105 QDeclarativeItem(QDeclarativeItem *parent = 0);
106 virtual ~QDeclarativeItem();
107
108 QDeclarativeItem *parentItem() const;
109 void setParentItem(QDeclarativeItem *parent);
110
111 QRectF childrenRect();
112
113 bool clip() const;
114 void setClip(bool);
115
116 qreal baselineOffset() const;
117 void setBaselineOffset(qreal);
118
119 QDeclarativeListProperty<QGraphicsTransform> transform();
120
121 qreal width() const;
122 void setWidth(qreal);
123 void resetWidth();
124 qreal implicitWidth() const;
125
126 qreal height() const;
127 void setHeight(qreal);
128 void resetHeight();
129 qreal implicitHeight() const;
130
131 void setSize(const QSizeF &size);
132
133 TransformOrigin transformOrigin() const;
134 void setTransformOrigin(TransformOrigin);
135
136 bool smooth() const;
137 void setSmooth(bool);
138
139 QRectF boundingRect() const;
140 virtual void paint(QPainter *, const QStyleOptionGraphicsItem *, QWidget *);
141
142 bool hasActiveFocus() const;
143 bool hasFocus() const;
144 void setFocus(bool);
145
146 bool keepMouseGrab() const;
147 void setKeepMouseGrab(bool);
148
149 Q_INVOKABLE QScriptValue mapFromItem(const QScriptValue &item, qreal x, qreal y) const;
150 Q_INVOKABLE QScriptValue mapToItem(const QScriptValue &item, qreal x, qreal y) const;
151 Q_INVOKABLE void forceActiveFocus();
152 Q_INVOKABLE QDeclarativeItem *childAt(qreal x, qreal y) const;
153
154Q_SIGNALS:
155 void childrenRectChanged(const QRectF &);
156 void baselineOffsetChanged(qreal);
157 void stateChanged(const QString &);
158 void focusChanged(bool);
159 void activeFocusChanged(bool);
160 void parentChanged(QDeclarativeItem *);
161 void transformOriginChanged(TransformOrigin);
162 void smoothChanged(bool);
163 void clipChanged(bool);
164
165protected:
166 bool isComponentComplete() const;
167 virtual bool sceneEvent(QEvent *);
168 virtual bool event(QEvent *);
169 virtual QVariant itemChange(GraphicsItemChange, const QVariant &);
170
171 void setImplicitWidth(qreal);
172 bool widthValid() const; // ### better name?
173 void setImplicitHeight(qreal);
174 bool heightValid() const; // ### better name?
175
176 virtual void classBegin();
177 virtual void componentComplete();
178 virtual void keyPressEvent(QKeyEvent *event);
179 virtual void keyReleaseEvent(QKeyEvent *event);
180 virtual void inputMethodEvent(QInputMethodEvent *);
181 virtual QVariant inputMethodQuery(Qt::InputMethodQuery query) const;
182 void keyPressPreHandler(QKeyEvent *);
183 void keyReleasePreHandler(QKeyEvent *);
184 void inputMethodPreHandler(QInputMethodEvent *);
185
186 virtual void geometryChanged(const QRectF &newGeometry,
187 const QRectF &oldGeometry);
188
189protected:
190 QDeclarativeItem(QDeclarativeItemPrivate &dd, QDeclarativeItem *parent = 0);
191
192private:
193 Q_DISABLE_COPY(QDeclarativeItem)
194 Q_DECLARE_PRIVATE_D(QGraphicsItem::d_ptr.data(), QDeclarativeItem)
195};
196
197template<typename T>
198 T qobject_cast(QGraphicsObject *o)
199{
200 QObject *obj = o;
201 return qobject_cast<T>(obj);
202}
203
204// ### move to QGO
205template<typename T>
206T qobject_cast(QGraphicsItem *item)
207{
208 if (!item) return 0;
209 QObject *o = item->toGraphicsObject();
210 return qobject_cast<T>(o);
211}
212
213#ifndef QT_NO_DEBUG_STREAM
214QDebug Q_DECLARATIVE_EXPORT operator<<(QDebug debug, QDeclarativeItem *item);
215#endif
216
217QT_END_NAMESPACE
218
219QML_DECLARE_TYPE(QDeclarativeItem)
220QML_DECLARE_TYPE(QGraphicsObject)
221QML_DECLARE_TYPE(QGraphicsTransform)
222QML_DECLARE_TYPE(QGraphicsScale)
223QML_DECLARE_TYPE(QGraphicsRotation)
224QML_DECLARE_TYPE(QGraphicsWidget)
225QML_DECLARE_TYPE(QAction)
226
227QT_END_HEADER
228
229#endif // QDECLARATIVEITEM_H
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