【Qt编程】基于Qt的词典开发系列<十二>调用讲述人

来源：互联网发布：手机看报纸软件编辑：程序博客网时间：2024/05/21 07:58

我们知道，win7系统自带有讲述人，即可以机器读出当前内容，具体可以将电脑锁定，然后点击左下角的按钮即可。之前在用Matlab写扫雷游戏的时候，也曾经调用过讲述人来进行游戏的语音提示。具体的Matlab脚本文件如下：

 sp=actxserver('SAPI.SpVoice');sp.Speak('你好，欢迎来到西安电子科技大学！Hello,Welcome to XD University!')

Qt调用讲述人，需要使用专门的类，具体可以参考http://lynxline.com/qtspeech-say-hello-world 一文，文中大致介绍了该类的使用方法。下面我就通过使用该类来实现讲述人的调用。

首先建立一个dialog类型的gui项目，将上面所说的类QtSpeech类的头文件speech.h和源文件speech.cpp添加到工程中，这样项目中就有5个文件：dialog.h、speech.h、main.cpp、dialog.cpp、speech.cpp。当然还有界面文件dialog.ui。在界面文件中添加QTextEdit控件用于输入你要读取的文字，然后在其槽函数中添加QtSpeech的发音功能，添加QPushButton控件来控制发音。具体的各个文件源代码如下：

1、dialog.h

#ifndef DIALOG_H#define DIALOG_H#include <QDialog>#include"speech.h"namespace Ui {class Dialog;}class Dialog : public QDialog{    Q_OBJECT    public:    explicit Dialog(QWidget *parent = 0);    ~Dialog();    private slots:    void on_pushButton_clicked();private:    Ui::Dialog *ui;};#endif // DIALOG_H

2、speech.h

#ifndef SPEECH_H#define SPEECH_H#include <QObject>class QtSpeech : public QObject {    Q_OBJECTpublic:    // 处理异常情况    struct Error { QString msg; Error(QString s):msg(s) {} };    struct InitError : Error { InitError(QString s):Error(s) {} };    struct LogicError : Error { LogicError(QString s):Error(s) {} };    struct CloseError : Error { CloseError(QString s):Error(s) {} };    //定义数据类型    struct VoiceName { QString id; QString name; };    typedef QList<VoiceName> VoiceNames;    //定义构造函数    QtSpeech(QObject * parent);    QtSpeech(VoiceName n = VoiceName(), QObject * parent =0L);    virtual ~QtSpeech();    const VoiceName & name() const; //要读的内容    static VoiceNames voices();     //要读的内容    void say(QString) const;                                    //同步发音    void tell(QString) const;                                   //异步发音    void tell(QString, QObject * obj, const char * slot) const; //发音结束时，有停顿    /*******************/    void pause(void) const;//暂停    void resume(void) const;//从暂停中恢复    void stop(void) const;//停止发音    /******************/signals:    void finished();protected:    virtual void timerEvent(QTimerEvent *);private:    class Private;    Private * d;};//}#endif // SPEECH_H

3、main.cpp

#include <QApplication>#include"dialog.h"int main(int argc, char *argv[]){    QApplication app(argc, argv);    Dialog dlg;    dlg.show();    return app.exec();}

4、dialog.cpp

#include "dialog.h"#include "ui_dialog.h"Dialog::Dialog(QWidget *parent) :    QDialog(parent),    ui(new Ui::Dialog){    ui->setupUi(this);}Dialog::~Dialog(){    delete ui;}void Dialog::on_pushButton_clicked(){    QtSpeech *speaker = new QtSpeech(this);    speaker->tell(ui->textEdit->toPlainText(),speaker,SLOT(onSpeechFinished()));   // speaker.stop();}

5、speech.cpp

#include "speech.h"#include <QString>#include <QPointer>#include <QList>#include <QTimerEvent>#undef UNICODE#include <sapi.h>#include <sphelper.h>#include <comdef.h>#define UNICODE#include <windows.h>#include <windowsx.h>#include <commctrl.h>// some defines for throwing exceptions#define Where QString("%1:%2:").arg(__FILE__).arg(__LINE__)#define SysCall(x,e) {\    HRESULT hr = x;\    if (FAILED(hr)) {\        QString msg = #e;\        msg += ":"+QString(__FILE__);\        msg += ":"+QString::number(__LINE__)+":"+#x+":";\        msg += _com_error(hr).ErrorMessage();\        throw e(msg);\    }\}// internal dataclass QtSpeech::Private {public:    Private()        :onFinishSlot(0L),waitingFinish(false) {}    VoiceName name;    static const QString VoiceId;    typedef QPointer<QtSpeech> Ptr;    static QList<Ptr> ptrs;    CComPtr<ISpVoice> voice;    const char * onFinishSlot;    QPointer<QObject> onFinishObj;    bool waitingFinish;    class WCHAR_Holder {    public:        WCHAR * w;        WCHAR_Holder(QString s)            :w(0) {            w = new WCHAR[s.length()+1];            s.toWCharArray(w);            w[s.length()] =0;        }        ~WCHAR_Holder() { delete[] w; }    };};const QString QtSpeech::Private::VoiceId = QString("win:%1");QList<QtSpeech::Private::Ptr> QtSpeech::Private::ptrs = QList<QtSpeech::Private::Ptr>();//类的定义QtSpeech::QtSpeech(QObject * parent)    :QObject(parent), d(new Private){    CoInitialize(NULL);    SysCall( d->voice.CoCreateInstance( CLSID_SpVoice ), InitError);    VoiceName n;    WCHAR * w_id = 0L;    WCHAR * w_name = 0L;    CComPtr<ISpObjectToken> voice;    SysCall( d->voice->GetVoice(&voice), InitError);    SysCall( SpGetDescription(voice, &w_name), InitError);    SysCall( voice->GetId(&w_id), InitError);    n.name = QString::fromWCharArray(w_name);    n.id = QString::fromWCharArray(w_id);    voice.Release();    if (n.id.isEmpty())        throw InitError(Where+"No default voice in system");    d->name = n;    d->ptrs << this;}QtSpeech::QtSpeech(VoiceName n, QObject * parent)    :QObject(parent), d(new Private){    ULONG count = 0;    CComPtr<IEnumSpObjectTokens> voices;    CoInitialize(NULL);    SysCall( d->voice.CoCreateInstance( CLSID_SpVoice ), InitError);    if (n.id.isEmpty()) {        WCHAR * w_id = 0L;        WCHAR * w_name = 0L;        CComPtr<ISpObjectToken> voice;        SysCall( d->voice->GetVoice(&voice), InitError);        SysCall( SpGetDescription(voice, &w_name), InitError);        SysCall( voice->GetId(&w_id), InitError);        n.name = QString::fromWCharArray(w_name);        n.id = QString::fromWCharArray(w_id);        voice.Release();    }    else {        SysCall( SpEnumTokens(SPCAT_VOICES, NULL, NULL, &voices), InitError);        SysCall( voices->GetCount(&count), InitError);        for (int i =0; i< count; ++i) {            WCHAR * w_id = 0L;            CComPtr<ISpObjectToken> voice;            SysCall( voices->Next( 1, &voice, NULL ), InitError);            SysCall( voice->GetId(&w_id), InitError);            QString id = QString::fromWCharArray(w_id);            if (id == n.id) d->voice->SetVoice(voice);            voice.Release();        }    }    if (n.id.isEmpty())        throw InitError(Where+"No default voice in system");    d->name = n;    d->ptrs << this;}QtSpeech::~QtSpeech(){    d->ptrs.removeAll(this);    delete d;}const QtSpeech::VoiceName & QtSpeech::name() const {    return d->name;}QtSpeech::VoiceNames QtSpeech::voices(){    VoiceNames vs;    ULONG count = 0;    CComPtr<IEnumSpObjectTokens> voices;    CoInitialize(NULL);    SysCall( SpEnumTokens(SPCAT_VOICES, NULL, NULL, &voices), LogicError);    SysCall( voices->GetCount(&count), LogicError);    for(int i=0; i< count; ++i) {        WCHAR * w_id = 0L;        WCHAR * w_name = 0L;        CComPtr<ISpObjectToken> voice;        SysCall( voices->Next( 1, &voice, NULL ), LogicError);        SysCall( SpGetDescription(voice, &w_name), LogicError);        SysCall( voice->GetId(&w_id), LogicError);        QString id = QString::fromWCharArray(w_id);        QString name = QString::fromWCharArray(w_name);        VoiceName n = { id, name };        vs << n;        voice.Release();    }    return vs;}void QtSpeech::tell(QString text) const {    tell(text, 0L,0L);}void QtSpeech::tell(QString text, QObject * obj, const char * slot) const{    if (d->waitingFinish)        throw LogicError(Where+"Already waiting to finish speech");    d->onFinishObj = obj;    d->onFinishSlot = slot;    if (obj && slot)        connect(const_cast<QtSpeech *>(this), SIGNAL(finished()), obj, slot);    d->waitingFinish = true;    const_cast<QtSpeech *>(this)->startTimer(100);    Private::WCHAR_Holder w_text(text);    SysCall( d->voice->Speak( w_text.w, SPF_ASYNC | SPF_IS_NOT_XML, 0), LogicError);}void QtSpeech::say(QString text) const{    Private::WCHAR_Holder w_text(text);    SysCall( d->voice->Speak( w_text.w, SPF_IS_NOT_XML, 0), LogicError);}void QtSpeech::timerEvent(QTimerEvent * te){    QObject::timerEvent(te);    if (d->waitingFinish) {        SPVOICESTATUS es;        d->voice->GetStatus( &es, NULL );        if (es.dwRunningState == SPRS_DONE) {            d->waitingFinish = false;            killTimer(te->timerId());            finished();        }    }}/************************/void QtSpeech::pause(void) const{//暂停    SysCall( d->voice->Pause(), LogicError);}void QtSpeech::resume() const{//恢复    SysCall(d->voice->Resume(), LogicError);}void QtSpeech::stop() const{//停止    SysCall(d->voice->Speak(NULL, SPF_PURGEBEFORESPEAK, 0), LogicError)}/***************************///}

程序结果如下：

基于Qt的词典开发系列

词典框架设计及成品展示
本地词典的设计
开始菜单的设计
无边框窗口的缩放与拖动
无边框窗口的拖动
界面美化设计
调用网络API
用户登录及API调用的实现
JSON数据解析
国际音标的显示
系统托盘的显示
调用讲述人
音频播放
自动补全功能
HTML特殊字符及正则表达式
后序

作品下载地址（发布版）：http://download.csdn.net/detail/tengweitw/8548767

作品下载地址（绿色版）：http://download.csdn.net/detail/tengweitw/8830495

源码下载地址：http://download.csdn.net/detail/tengweitw/8830503

原文：http://blog.csdn.net/tengweitw/article/details/38306803

作者：nineheadedbird

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