内容

• 公共函数
• 重实现公共函数
• 公共槽
• 重实现保护函数
• 详细描述

QSvgWidget 类

QSvgWidget class provides a widget that is used to display the contents of Scalable Vector Graphics (SVG) files. 更多...

头：	#include <QSvgWidget>
qmake:	QT += svg
Since:	Qt 4.1
继承：	QWidget

• 所有成员列表，包括继承成员

公共函数

	QSvgWidget (QWidget * parent = Q_NULLPTR)
	QSvgWidget (const QString & file , QWidget * parent = Q_NULLPTR)
	~QSvgWidget ()
QSvgRenderer *	renderer () const

重实现公共函数

virtual QSize

sizeHint () const override

• 214 公共函数继承自 QWidget
• 32 公共函数继承自 QObject
• 14 公共函数继承自 QPaintDevice

公共槽

void	load (const QString & file )
void	load (const QByteArray & contents )

• 19 公共槽继承自 QWidget
• 1 公共槽继承自 QObject

重实现保护函数

virtual void

paintEvent (QPaintEvent * event ) override

• 35 保护函数继承自 QWidget
• 9 保护函数继承自 QObject
• 1 保护函数继承自 QPaintDevice

额外继承成员

• 59 特性继承自 QWidget
• 1 特性继承自 QObject
• 3 信号继承自 QWidget
• 2 信号继承自 QObject
• 5 静态公共成员继承自 QWidget
• 11 静态公共成员继承自 QObject
• 35 保护函数继承自 QWidget
• 9 保护函数继承自 QObject
• 1 保护函数继承自 QPaintDevice
• 1 保护槽继承自 QWidget

详细描述

QSvgWidget class provides a widget that is used to display the contents of Scalable Vector Graphics (SVG) files.

This class enables developers to display SVG drawings alongside standard widgets, and is used in much the same way as QLabel is used for displaying text and bitmap images.

由于 QSvgWidget 是子类化的 QWidget , SVG drawings are rendered using the properties of the display. More control can be exercised over the rendering process with the QSvgRenderer class, as this can be used to paint onto other paint devices, such as QImage and QGLWidget. The renderer used by the widget can be obtained with the renderer () 函数。

每个 QSvgWidget can be constructed with the file name of a SVG file, or they can be constructed without a specific file to render and one can be supplied later. The load () functions provide two different ways to load an SVG file: they accept either the file name of an SVG file or a QByteArray containing the serialized XML representation of an SVG file.

By default, the widget provides a size hint to reflect the size of the drawing that it displays. If no data has been loaded, the widget provides the default QWidget size hint. Subclass this class and reimplement sizeHint () if you need to customize this behavior.

另请参阅 QSvgRenderer , Qt SVG C++ 类 ，和 QPicture .

成员函数文档编制

QSvgWidget:: QSvgWidget ( QWidget * parent = Q_NULLPTR)

Constructs a new SVG display widget with the given parent .

QSvgWidget:: QSvgWidget (const QString & file , QWidget * parent = Q_NULLPTR)

Constructs a new SVG display widget with the given parent and loads the contents of the specified file .

QSvgWidget:: ~QSvgWidget ()

销毁 Widget。

[slot] void QSvgWidget:: load (const QString & file )

Loads the contents of the specified SVG file 和更新 Widget。

[slot] void QSvgWidget:: load (const QByteArray & contents )

加载指定 SVG 格式 contents 和更新 Widget。

[override virtual protected] void QSvgWidget:: paintEvent ( QPaintEvent * event )

重实现自 QWidget::paintEvent ().

QSvgRenderer *QSvgWidget:: renderer () const

Returns the renderer used to display the contents of the widget.

[override virtual] QSize QSvgWidget:: sizeHint () const

重实现自 QWidget::sizeHint ().