Qt 4.8
qitemdelegate.h
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41 
42 #ifndef QITEMDELEGATE_H
43 #define QITEMDELEGATE_H
44 
45 #include <QtGui/qabstractitemdelegate.h>
46 #include <QtCore/qstring.h>
47 #include <QtGui/qpixmap.h>
48 #include <QtCore/qvariant.h>
49 
51 
53 
54 QT_MODULE(Gui)
55 
56 #ifndef QT_NO_ITEMVIEWS
57 
59 class QItemEditorFactory;
60 
62 {
63  Q_OBJECT
64  bool clipping;
65 
66 public:
67  explicit QItemDelegate(QObject *parent = 0);
68  ~QItemDelegate();
69 
70  bool hasClipping() const;
71  void setClipping(bool clip);
72 
73  // painting
74  void paint(QPainter *painter,
75  const QStyleOptionViewItem &option,
76  const QModelIndex &index) const;
77  QSize sizeHint(const QStyleOptionViewItem &option,
78  const QModelIndex &index) const;
79 
80  // editing
81  QWidget *createEditor(QWidget *parent,
82  const QStyleOptionViewItem &option,
83  const QModelIndex &index) const;
84 
85  void setEditorData(QWidget *editor, const QModelIndex &index) const;
86  void setModelData(QWidget *editor, QAbstractItemModel *model, const QModelIndex &index) const;
87 
88  void updateEditorGeometry(QWidget *editor,
89  const QStyleOptionViewItem &option,
90  const QModelIndex &index) const;
91 
92  // editor factory
93  QItemEditorFactory *itemEditorFactory() const;
94  void setItemEditorFactory(QItemEditorFactory *factory);
95 
96 protected:
97  virtual void drawDisplay(QPainter *painter, const QStyleOptionViewItem &option,
98  const QRect &rect, const QString &text) const;
99  virtual void drawDecoration(QPainter *painter, const QStyleOptionViewItem &option,
100  const QRect &rect, const QPixmap &pixmap) const;
101  virtual void drawFocus(QPainter *painter, const QStyleOptionViewItem &option,
102  const QRect &rect) const;
103  virtual void drawCheck(QPainter *painter, const QStyleOptionViewItem &option,
104  const QRect &rect, Qt::CheckState state) const;
105  void drawBackground(QPainter *painter, const QStyleOptionViewItem &option,
106  const QModelIndex &index) const;
107 
108  void doLayout(const QStyleOptionViewItem &option,
109  QRect *checkRect, QRect *iconRect, QRect *textRect, bool hint) const;
110 
111  QRect rect(const QStyleOptionViewItem &option, const QModelIndex &index, int role) const;
112 
113  bool eventFilter(QObject *object, QEvent *event);
115  const QStyleOptionViewItem &option, const QModelIndex &index);
116 
117  QStyleOptionViewItem setOptions(const QModelIndex &index,
118  const QStyleOptionViewItem &option) const;
119 
120  QPixmap decoration(const QStyleOptionViewItem &option, const QVariant &variant) const;
121  QPixmap *selected(const QPixmap &pixmap, const QPalette &palette, bool enabled) const;
122 
123  QRect check(const QStyleOptionViewItem &option, const QRect &bounding,
124  const QVariant &variant) const;
125  QRect textRectangle(QPainter *painter, const QRect &rect,
126  const QFont &font, const QString &text) const;
127 
128 private:
131 
132  Q_PRIVATE_SLOT(d_func(), void _q_commitDataAndCloseEditor(QWidget*))
133 };
134 
135 #endif // QT_NO_ITEMVIEWS
136 
138 
140 
141 #endif // QITEMDELEGATE_H
The QVariant class acts like a union for the most common Qt data types.
Definition: qvariant.h:92
The QPainter class performs low-level painting on widgets and other paint devices.
Definition: qpainter.h:86
virtual void paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const =0
This pure abstract function must be reimplemented if you want to provide custom rendering.
CheckState
Definition: qnamespace.h:1607
The QAbstractItemDelegate class is used to display and edit data items from a model.
The QItemEditorFactory class provides widgets for editing item data in views and delegates.
#define QT_END_NAMESPACE
This macro expands to.
Definition: qglobal.h:90
EventRef event
#define QT_MODULE(x)
Definition: qglobal.h:2783
virtual void updateEditorGeometry(QWidget *editor, const QStyleOptionViewItem &option, const QModelIndex &index) const
Updates the geometry of the editor for the item with the given index, according to the rectangle spec...
#define QT_BEGIN_HEADER
Definition: qglobal.h:136
virtual QSize sizeHint(const QStyleOptionViewItem &option, const QModelIndex &index) const =0
This pure abstract function must be reimplemented if you want to provide custom rendering.
#define Q_GUI_EXPORT
Definition: qglobal.h:1450
The QWidget class is the base class of all user interface objects.
Definition: qwidget.h:150
#define Q_DISABLE_COPY(Class)
Disables the use of copy constructors and assignment operators for the given Class.
Definition: qglobal.h:2523
#define Q_PRIVATE_SLOT(d, signature)
Definition: qobjectdefs.h:73
The QString class provides a Unicode character string.
Definition: qstring.h:83
The QObject class is the base class of all Qt objects.
Definition: qobject.h:111
virtual void setModelData(QWidget *editor, QAbstractItemModel *model, const QModelIndex &index) const
Sets the data for the item at the given index in the model to the contents of the given editor...
virtual bool editorEvent(QEvent *event, QAbstractItemModel *model, const QStyleOptionViewItem &option, const QModelIndex &index)
When editing of an item starts, this function is called with the event that triggered the editing...
virtual QWidget * createEditor(QWidget *parent, const QStyleOptionViewItem &option, const QModelIndex &index) const
Returns the editor to be used for editing the data item with the given index.
#define QT_BEGIN_NAMESPACE
This macro expands to.
Definition: qglobal.h:89
bool clipping
if the delegate should clip the paint events
Definition: qitemdelegate.h:64
#define Q_OBJECT
Definition: qobjectdefs.h:157
virtual bool eventFilter(QObject *, QEvent *)
Filters events if this object has been installed as an event filter for the watched object...
Definition: qobject.cpp:1375
The QAbstractItemModel class provides the abstract interface for item model classes.
The QFont class specifies a font used for drawing text.
Definition: qfont.h:64
The QItemDelegate class provides display and editing facilities for data items from a model...
Definition: qitemdelegate.h:61
The QModelIndex class is used to locate data in a data model.
The QRect class defines a rectangle in the plane using integer precision.
Definition: qrect.h:58
quint16 index
The QPixmap class is an off-screen image representation that can be used as a paint device...
Definition: qpixmap.h:71
The QSize class defines the size of a two-dimensional object using integer point precision.
Definition: qsize.h:53
#define Q_DECLARE_PRIVATE(Class)
Definition: qglobal.h:2467
const char * variant
The QStyleOptionViewItem class is used to describe the parameters used to draw an item in a view widg...
Definition: qstyleoption.h:539
virtual void setEditorData(QWidget *editor, const QModelIndex &index) const
Sets the contents of the given editor to the data for the item at the given index.
The QEvent class is the base class of all event classes.
Definition: qcoreevent.h:56
#define QT_END_HEADER
Definition: qglobal.h:137
#define enabled
#define text
Definition: qobjectdefs.h:80
The QPalette class contains color groups for each widget state.
Definition: qpalette.h:61