内容

• 公共类型
• 特性
• 公共函数
• 公共槽
• 信号
• 静态公共成员
• 详细描述

QTextToSpeech 类

The QTextToSpeech class provides a convenient access to text-to-speech engines. 更多...

头：	#include <QTextToSpeech>
qmake:	QT += texttospeech
继承：	QObject

• 所有成员列表，包括继承成员
• 过时成员

公共类型

enum	State { Ready, Speaking, Paused, BackendError }

特性

locale : QLocale pitch : double rate : double

state : const State voice : QVoice volume : double

• 1 特性继承自 QObject

公共函数

	QTextToSpeech (QObject * parent = nullptr)
	QTextToSpeech (const QString & engine , QObject * parent = nullptr)
QVector<QLocale>	availableLocales () const
QVector<QVoice>	availableVoices () const
QLocale	locale () const
double	pitch () const
double	rate () const
QTextToSpeech::State	state () const
QVoice	voice () const
double	volume () const

• 31 公共函数继承自 QObject

公共槽

void	pause ()
void	resume ()
void	say (const QString & text )
void	setLocale (const QLocale & locale )
void	setPitch (double pitch )
void	setRate (double rate )
void	setVoice (const QVoice & voice )
void	setVolume (double volume )
void	stop ()

• 1 公共槽继承自 QObject

信号

void	localeChanged (const QLocale & locale )
void	pitchChanged (double pitch )
void	rateChanged (double rate )
void	stateChanged (QTextToSpeech::State state )
void	voiceChanged (const QVoice & voice )
void	volumeChanged (int volume )
void	volumeChanged (double volume )

• 2 信号继承自 QObject

静态公共成员

QStringList	availableEngines ()
const QMetaObject	staticMetaObject

• 9 静态公共成员继承自 QObject

额外继承成员

• 9 保护函数继承自 QObject

详细描述

The QTextToSpeech class provides a convenient access to text-to-speech engines.

使用 say () to start synthesizing text. It is possible to specify the language with setLocale (). To select between the available voices use setVoice (). The languages and voices depend on the available synthesizers on each platform. On Linux, speech-dispatcher 被使用默认情况下。

成员类型文档编制

enum QTextToSpeech:: State

常量	值	描述
QTextToSpeech::Ready	0	The synthesizer is ready to start a new text. This is also the state after a text was finished.
QTextToSpeech::Speaking	1	The current text is being spoken.
QTextToSpeech::Paused	2	The synthesis was paused and can be resumed with resume ().
QTextToSpeech::BackendError	3	The backend was unable to synthesize the current string.

特性文档编制

locale : QLocale

This property holds the current locale in use. By default, the system locale is used.

访问函数：

QLocale	locale () const
void	setLocale (const QLocale & locale )

通知程序信号：

void	localeChanged (const QLocale & locale )

pitch : double

This property holds the voice pitch, ranging from -1.0 to 1.0. The default of 0.0 is the normal speech pitch.

访问函数：

double	pitch () const
void	setPitch (double pitch )

通知程序信号：

void	pitchChanged (double pitch )

rate : double

This property holds the current voice rate, ranging from -1.0 to 1.0. The default value of 0.0 is normal speech flow.

访问函数：

double	rate () const
void	setRate (double rate )

通知程序信号：

void	rateChanged (double rate )

state : const State

This property holds the current state of the speech synthesizer. Use say () to start synthesizing text with the current voice and locale.

访问函数：

QTextToSpeech::State

state () const

通知程序信号：

void	stateChanged (QTextToSpeech::State state )

voice : QVoice

This property holds the current voice used for the speech.

访问函数：

QVoice	voice () const
void	setVoice (const QVoice & voice )

通知程序信号：

void	voiceChanged (const QVoice & voice )

volume : double

This property holds the current volume, ranging from 0.0 to 1.0. The default value is the platform's default volume.

访问函数：

double	volume () const
void	setVolume (double volume )

通知程序信号：

void	volumeChanged (int volume )
void	volumeChanged (double volume )

成员函数文档编制

QTextToSpeech:: QTextToSpeech ( QObject * parent = nullptr)

Loads a text-to-speech engine from a plug-in that uses the default engine plug-in and constructs a QTextToSpeech object as the child of parent .

The default engine may be platform-specific.

若插件加载失败， QTextToSpeech::state () 返回 QTextToSpeech::BackendError .

另请参阅 availableEngines ().

QTextToSpeech:: QTextToSpeech (const QString & engine , QObject * parent = nullptr)

Loads a text-to-speech engine from a plug-in that matches parameter engine and constructs a QTextToSpeech object as the child of parent .

若 engine is empty, the default engine plug-in is used. The default engine may be platform-specific.

若插件加载失败， QTextToSpeech::state () 返回 QTextToSpeech::BackendError .

另请参阅 availableEngines ().

[static] QStringList QTextToSpeech:: availableEngines ()

Gets the list of supported text-to-speech engine plug-ins.

QVector < QLocale > QTextToSpeech:: availableLocales () const

Gets a vector of locales that are currently supported.

注意： On some platforms these can change, for example, when the backend changes synthesizers.

QVector < QVoice > QTextToSpeech:: availableVoices () const

Gets a vector of voices available for the current locale.

注意： if no locale has been set, the system locale is used.

[slot] void QTextToSpeech:: pause ()

暂停当前语音。

注意：

• This function depends on the platform and the backend. It may not work at all, it may take several seconds before it takes effect, or it may pause instantly. Some synthesizers will look for a break that they can later resume from, such as a sentence end.
• Due to Android platform limitations, pause() stops what is presently being said, while resume () starts the previously queued sentence from the beginning.

另请参阅 resume ().

[slot] void QTextToSpeech:: resume ()

Resume speaking after pause () 被调用。

另请参阅 pause ().

[slot] void QTextToSpeech:: say (const QString & text )

Start synthesizing the text . This function will start the asynchronous reading of the text. The current state is available using the state property. Once the synthesis is done, a stateChanged () 信号采用 Ready state is emitted.

[slot] void QTextToSpeech:: setLocale (const QLocale & locale )

设置 locale to a given locale if possible. The default is the system locale.

注意： setter 函数对于特性 locale .

另请参阅 locale ().

[slot] void QTextToSpeech:: setVoice (const QVoice & voice )

设置 voice to use.

注意： On some platforms, setting the voice changes other voice attributes such as locale, pitch, and so on. These changes trigger the emission of signals.

注意： setter 函数对于特性 voice .

另请参阅 voice ().

[slot] void QTextToSpeech:: stop ()

Stop the text that is being read.