内容

• 特性
• 公共函数
• 信号
• 静态公共成员
• 详细描述

QWaylandCompositor Class

The QWaylandCompositor class manages the Wayland display server. 更多...

头：	#include <QWaylandCompositor>
qmake:	QT += waylandcompositor
Since:	Qt 5.8
继承：	QWaylandObject

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• 过时成员

特性

created : const bool defaultOutput : QWaylandOutput* defaultSeat : QWaylandSeat* const

retainedSelection : bool socketName : QByteArray useHardwareIntegrationExtension : bool

• 1 特性继承自 QObject

公共函数

	QWaylandCompositor (QObject * parent = nullptr)
virtual	~QWaylandCompositor () override
void	addSocketDescriptor (int fd )
virtual void	create ()
QWaylandOutput *	defaultOutput () const
QWaylandSeat *	defaultSeat () const
void	destroyClient (QWaylandClient * client )
void	destroyClientForSurface (QWaylandSurface * surface )
virtual void	grabSurface (QWaylandSurfaceGrabber * grabber , const QWaylandBufferRef & buffer )
bool	isCreated () const
QWaylandOutput *	outputFor (QWindow * window ) const
bool	retainedSelectionEnabled () const
void	setDefaultOutput (QWaylandOutput * output )
void	setRetainedSelectionEnabled (bool enabled )
void	setSocketName (const QByteArray & name )
void	setUseHardwareIntegrationExtension (bool 使用 )
QByteArray	socketName () const
bool	useHardwareIntegrationExtension () const

• 31 公共函数继承自 QObject

信号

void	createdChanged ()
void	defaultOutputChanged ()
void	defaultSeatChanged (QWaylandSeat * newDevice , QWaylandSeat * oldDevice )
void	outputAdded (QWaylandOutput * output )
void	outputRemoved (QWaylandOutput * output )
void	retainedSelectionChanged (bool retainedSelection )
void	socketNameChanged (const QByteArray & socketName )
void	subsurfaceChanged (QWaylandSurface * child , QWaylandSurface * parent )
void	surfaceAboutToBeDestroyed (QWaylandSurface * surface )
void	surfaceCreated (QWaylandSurface * surface )
void	surfaceRequested (QWaylandClient * client , uint id , int version )
void	useHardwareIntegrationExtensionChanged ()

• 2 信号继承自 QObject

静态公共成员

const QMetaObject

staticMetaObject

• 9 静态公共成员继承自 QObject

额外继承成员

• 1 公共槽继承自 QObject
• 9 保护函数继承自 QObject

详细描述

The QWaylandCompositor class manages the Wayland display server.

The QWaylandCompositor manages the connections to the clients, as well as the different outputs and seats .

Normally, a compositor application will have a single WaylandCompositor instance, which can have several outputs as children.

特性文档编制

created : const bool

This property is true if QWaylandCompositor has been initialized, otherwise it's false.

访问函数：

bool	isCreated () const

通知程序信号：

void	createdChanged ()

defaultOutput : QWaylandOutput *

This property contains the first in the list of outputs added to the QWaylandCompositor , or null if no outputs have been added.

Setting a new default output prepends it to the output list, making it the new default, but the previous default is not removed from the list. If the new default output was already in the list of outputs, it is moved to the beginning of the list.

访问函数：

QWaylandOutput *	defaultOutput () const
void	setDefaultOutput (QWaylandOutput * output )

通知程序信号：

void	defaultOutputChanged ()

defaultSeat : QWaylandSeat * const

This property contains the default seat for this QWaylandCompositor .

访问函数：

QWaylandSeat *

defaultSeat () const

通知程序信号：

void	defaultSeatChanged (QWaylandSeat * newDevice , QWaylandSeat * oldDevice )

retainedSelection : bool

This property holds whether retained selection is enabled.

访问函数：

bool	retainedSelectionEnabled () const
void	setRetainedSelectionEnabled (bool enabled )

通知程序信号：

void	retainedSelectionChanged (bool retainedSelection )

socketName : QByteArray

This property holds the socket name used by QWaylandCompositor to communicate with clients. This must be set before the QWaylandCompositor is created .

If the socketName is empty (the default), the contents of the start argument --wayland-socket-name are used instead. If the argument is not set, the compositor tries to find a socket name, which is wayland-0 在默认情况下。

访问函数：

QByteArray	socketName () const
void	setSocketName (const QByteArray & name )

通知程序信号：

void	socketNameChanged (const QByteArray & socketName )

useHardwareIntegrationExtension : bool

This property holds whether the hardware integration extension should be enabled for this QWaylandCompositor .

This property must be set before the compositor is created .

访问函数：

bool	useHardwareIntegrationExtension () const
void	setUseHardwareIntegrationExtension (bool 使用 )

通知程序信号：

void	useHardwareIntegrationExtensionChanged ()

成员函数文档编制

QWaylandCompositor:: QWaylandCompositor ( QObject * parent = nullptr)

构造 QWaylandCompositor 采用给定 parent .

[override virtual] QWaylandCompositor:: ~QWaylandCompositor ()

销毁 QWaylandCompositor

void QWaylandCompositor:: addSocketDescriptor ( int fd )

Listen for client connections on a file descriptor referring to a server socket already bound and listening.

Does not take ownership of the file descriptor; it must be closed explicitly if needed.

注意： This method is only available with libwayland 1.10.0 or newer. If built against an earlier libwayland runtime, this method is a noop.

该函数在 Qt 5.12 引入。

注意： 此函数可以被援引，通过元对象系统和从 QML。见 Q_INVOKABLE .

[virtual] void QWaylandCompositor:: create ()

初始化 QWaylandCompositor . If you override this function in your subclass, be sure to call the base class implementation.

void QWaylandCompositor:: destroyClient ( QWaylandClient * client )

销毁 client .

注意： 此函数可以被援引，通过元对象系统和从 QML。见 Q_INVOKABLE .

void QWaylandCompositor:: destroyClientForSurface ( QWaylandSurface * surface )

Destroys the client for the surface .

注意： 此函数可以被援引，通过元对象系统和从 QML。见 Q_INVOKABLE .

[virtual] void QWaylandCompositor:: grabSurface ( QWaylandSurfaceGrabber * grabber , const QWaylandBufferRef & buffer )

Grab the surface content from the given buffer . The default implementation requires a OpenGL context to be bound to the current thread to work. If this is not possible, reimplement this function in your compositor subclass to implement custom logic. The default implementation only grabs shared memory and OpenGL buffers, reimplement this in your compositor subclass to handle more buffer types.

注意： You should not call this manually, but rather use QWaylandSurfaceGrabber ( grabber ).

[signal] void QWaylandCompositor:: outputAdded ( QWaylandOutput * output )

QWaylandOutput *QWaylandCompositor:: outputFor ( QWindow * window ) const

返回 QWaylandOutput that is connected to the given window .

注意： 此函数可以被援引，通过元对象系统和从 QML。见 Q_INVOKABLE .

[signal] void QWaylandCompositor:: outputRemoved ( QWaylandOutput * output )

[signal] void QWaylandCompositor:: subsurfaceChanged ( QWaylandSurface * child , QWaylandSurface * parent )

[signal] void QWaylandCompositor:: surfaceAboutToBeDestroyed ( QWaylandSurface * surface )

[signal] void QWaylandCompositor:: surfaceCreated ( QWaylandSurface * surface )

This signal is emitted when a new QWaylandSurface instance has been created.

[signal] void QWaylandCompositor:: surfaceRequested ( QWaylandClient * client , uint id , int version )

This signal is emitted when a client has created a surface. The slot connecting to this signal may create and initialize a QWaylandSurface instance in the scope of the slot. Otherwise a default surface is created.

Connections to this signal must be of Qt::DirectConnection connection type.