QAbstractGraphicsShapeItem Class
The QAbstractGraphicsShapeItem class provides a common base for all path items. 更多...
| 头文件: | #include <QAbstractGraphicsShapeItem> |
| qmake: | QT += widgets |
| 开始支持版本: | Qt 4.2 |
| 基类: | QGraphicsItem |
| 派生类: | QGraphicsEllipseItem, QGraphicsPathItem, QGraphicsPolygonItem, QGraphicsRectItem, and QGraphicsSimpleTextItem |
公有函数
| QAbstractGraphicsShapeItem(QGraphicsItem *parent = Q_NULLPTR) | |
| ~QAbstractGraphicsShapeItem() | |
| QBrush | brush() const |
| QPen | pen() const |
| void | setBrush(const QBrush &brush) |
| void | setPen(const QPen &pen) |
重新实现的公有函数
| virtual bool | isObscuredBy(const QGraphicsItem *item) const |
| virtual QPainterPath | opaqueArea() const |
- 176 个公有函数继承自 QGraphicsItem
其他继承的成员
- 2 个静态公有成员继承自 QGraphicsItem
- 24 个受保护的函数继承自 QGraphicsItem
详细描述
The QAbstractGraphicsShapeItem class provides a common base for all path items.
This class does not fully implement an item by itself; in particular, it does not implement boundingRect() and paint(), which are inherited by QGraphicsItem.
You can subclass this item to provide a simple base implementation of accessors for the item's pen and brush.
参见 QGraphicsRectItem, QGraphicsEllipseItem, QGraphicsPathItem, QGraphicsPolygonItem, QGraphicsTextItem, QGraphicsLineItem, QGraphicsPixmapItem, and Graphics View Framework.
成员函数
QAbstractGraphicsShapeItem::QAbstractGraphicsShapeItem(QGraphicsItem *parent = Q_NULLPTR)
Constructs a QAbstractGraphicsShapeItem. parent is passed to QGraphicsItem's constructor.
QAbstractGraphicsShapeItem::~QAbstractGraphicsShapeItem()
Destroys a QAbstractGraphicsShapeItem.
QBrush QAbstractGraphicsShapeItem::brush() const
Returns the item's brush, or an empty brush if no brush has been set.
参见 setBrush().
[virtual] bool QAbstractGraphicsShapeItem::isObscuredBy(const QGraphicsItem *item) const
重新实现 QGraphicsItem::isObscuredBy().
[virtual] QPainterPath QAbstractGraphicsShapeItem::opaqueArea() const
重新实现 QGraphicsItem::opaqueArea().
QPen QAbstractGraphicsShapeItem::pen() const
Returns the item's pen. If no pen has been set, this function returns QPen(), a default black solid line pen with 1 width.
参见 setPen().
void QAbstractGraphicsShapeItem::setBrush(const QBrush &brush)
Sets the item's brush to brush.
The item's brush is used to fill the item.
If you use a brush with a QGradient, the gradient is relative to the item's coordinate system.
参见 brush().
void QAbstractGraphicsShapeItem::setPen(const QPen &pen)
Sets the pen for this item to pen.
The pen is used to draw the item's outline.
参见 pen().