QGraphicsPathItem Class
QGraphicsPathItem 类提供了一个路径项，您可以将其添加到QGraphicsScene... 更多...
| 头文件： | #include <QGraphicsPathItem> |
| CMake： | find_package(Qt6 REQUIRED COMPONENTS Widgets)target_link_libraries(mytarget PRIVATE Qt6::Widgets) |
| qmake： | QT += widgets |
| 继承： | QAbstractGraphicsShapeItem |
公共类型
| enum | anonymous { Type } |
公共函数
| QGraphicsPathItem(QGraphicsItem *parent = nullptr) | |
| QGraphicsPathItem(const QPainterPath &path, QGraphicsItem *parent = nullptr) | |
| virtual | ~QGraphicsPathItem() |
| QPainterPath | path() const |
| void | setPath(const QPainterPath &path) |
重新实现的公共函数
| virtual QRectF | boundingRect() const override |
| virtual bool | contains(const QPointF &point) const override |
| virtual bool | isObscuredBy(const QGraphicsItem *item) const override |
| virtual QPainterPath | opaqueArea() const override |
| virtual void | paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget = nullptr) override |
| virtual QPainterPath | shape() const override |
| virtual int | type() const override |
详细说明
要设置项目的路径，请向 QGraphicsPathItem 的构造函数传递QPainterPath 或调用setPath() 函数。path() 函数返回当前路径。
QGraphicsPathItem 使用该路径提供了boundingRect(),shape(), 和contains() 的合理实现。paint() 函数使用项目的关联笔和笔刷绘制路径，您可以通过调用setPen() 和setBrush() 函数设置笔和笔刷。
另请参阅 QGraphicsRectItem,QGraphicsEllipseItem,QGraphicsPolygonItem,QGraphicsTextItem,QGraphicsLineItem,QGraphicsPixmapItem 和图形视图框架。
成员函数文档
[explicit] QGraphicsPathItem::QGraphicsPathItem(QGraphicsItem *parent = nullptr)
构造一个 QGraphicsPath。parent 传递给QAbstractGraphicsShapeItem 的构造函数。
另请参见 QGraphicsScene::addItem().
[explicit] QGraphicsPathItem::QGraphicsPathItem(const QPainterPath &path, QGraphicsItem *parent = nullptr)
使用path 作为默认路径构造 QGraphicsPath 项目。parent 将传递给QAbstractGraphicsShapeItem 的构造函数。
另请参阅 QGraphicsScene::addItem().
[virtual noexcept] QGraphicsPathItem::~QGraphicsPathItem()
[override virtual] QRectF QGraphicsPathItem::boundingRect() const
重实现：QGraphicsItem::boundingRect() const.
[override virtual] bool QGraphicsPathItem::contains(const QPointF &point) const
重实现：QGraphicsItem::contains(const QPointF &point) const.
[override virtual] bool QGraphicsPathItem::isObscuredBy(const QGraphicsItem *item) const
重实现：QAbstractGraphicsShapeItem::isObscuredBy(const QGraphicsItem *item) const.
[override virtual] QPainterPath QGraphicsPathItem::opaqueArea() const
重实现：QAbstractGraphicsShapeItem::opaqueArea() const.
[override virtual] void QGraphicsPathItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget = nullptr)
重实现：QGraphicsItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)。
QPainterPath QGraphicsPathItem::path() const
以QPainterPath 的形式返回项目的路径。如果没有设置项目，则返回空的QPainterPath 。
另请参阅 setPath() 。
void QGraphicsPathItem::setPath(const QPainterPath &path)
设置项目的路径为给定的path 。
另请参阅 path() 。
[override virtual] QPainterPath QGraphicsPathItem::shape() const
重实现：QGraphicsItem::shape() const.
[override virtual] int QGraphicsPathItem::type() const
重实现：QGraphicsItem::type() const.
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