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/*
SPDX-FileCopyrightText: 2014-2026 Laurent Montel <montel@kde.org>
SPDX-License-Identifier: LGPL-2.0-or-later
*/
#include "texttospeech.h"
#include "textedittexttospeech_debug.h"
#include "texttospeechutil.h"
#include <QLocale>
#include <QTextToSpeech>
#include <QVector>
using namespace Qt::Literals::StringLiterals;
class TextEditTextToSpeech::TextToSpeechPrivate
{
public:
QString mDefaultEngine;
QTextToSpeech *mTextToSpeech = nullptr;
qsizetype mCurrentTextToSpeechId = -1;
bool initialized = false;
};
using namespace TextEditTextToSpeech;
TextToSpeech::TextToSpeech(QObject *parent)
: QObject(parent)
, d(new TextEditTextToSpeech::TextToSpeechPrivate)
{
}
TextToSpeech::~TextToSpeech() = default;
void TextToSpeech::reloadSettings()
{
d->initialized = true;
const TextEditTextToSpeech::TextToSpeechUtil::TextToSpeechSettings settings = TextEditTextToSpeech::TextToSpeechUtil::loadSettings();
qCDebug(TEXTEDITTEXTTOSPEECH_LOG) << settings;
const QString engineName = settings.engineName;
if (d->mDefaultEngine != engineName) {
if (d->mTextToSpeech) {
if (d->mTextToSpeech->engine() != engineName) {
disconnect(d->mTextToSpeech, &QTextToSpeech::stateChanged, this, &TextToSpeech::slotStateChanged);
disconnect(d->mTextToSpeech, &QTextToSpeech::aboutToSynthesize, this, &TextToSpeech::slotAboutToSynthesize);
delete d->mTextToSpeech;
d->mTextToSpeech = nullptr;
}
}
}
if (!d->mTextToSpeech) {
d->mTextToSpeech = new QTextToSpeech(engineName, this);
connect(d->mTextToSpeech, &QTextToSpeech::stateChanged, this, &TextToSpeech::slotStateChanged);
connect(d->mTextToSpeech, &QTextToSpeech::aboutToSynthesize, this, &TextToSpeech::slotAboutToSynthesize);
}
d->mDefaultEngine = engineName;
const int rate = settings.rate;
const double rateDouble = rate / 100.0;
d->mTextToSpeech->setRate(rateDouble);
const int pitch = settings.pitch;
const double pitchDouble = pitch / 100.0;
d->mTextToSpeech->setPitch(pitchDouble);
const int volumeValue = settings.volumeValue;
const double volumeDouble = volumeValue / 100.0;
d->mTextToSpeech->setVolume(volumeDouble);
d->mTextToSpeech->setLocale(QLocale(settings.localeName));
d->mTextToSpeech->setVoice(settings.voice);
}
TextToSpeech *TextToSpeech::self()
{
static TextToSpeech s_self;
return &s_self;
}
void TextToSpeech::initialize()
{
if (!d->initialized) {
reloadSettings();
}
}
void TextToSpeech::slotAboutToSynthesize([[maybe_unused]] qsizetype id)
{
const auto currentSpeechId = d->mCurrentTextToSpeechId;
Q_EMIT aboutToSynthesize(currentSpeechId, ++d->mCurrentTextToSpeechId);
}
void TextToSpeech::slotStateChanged()
{
TextToSpeech::State state = TextToSpeech::State::Unknown;
switch (d->mTextToSpeech->state()) {
case QTextToSpeech::Ready:
state = TextToSpeech::Ready;
break;
case QTextToSpeech::Speaking:
state = TextToSpeech::Speaking;
break;
case QTextToSpeech::Paused:
state = TextToSpeech::Paused;
break;
case QTextToSpeech::Error:
state = TextToSpeech::BackendError;
break;
case QTextToSpeech::Synthesizing:
state = TextToSpeech::Synthesizing;
break;
}
Q_EMIT stateChanged(state);
if (state == TextToSpeech::Ready) {
// Workaround for bug in qtextspeech
d->mTextToSpeech->stop();
Q_EMIT aboutToSynthesize(d->mCurrentTextToSpeechId, -1);
// Reinitialize
d->mCurrentTextToSpeechId = -1;
}
}
bool TextToSpeech::isReady() const
{
if (!d->mTextToSpeech) {
return false;
}
return d->mTextToSpeech->state() != QTextToSpeech::Error;
}
void TextToSpeech::say(const QString &text)
{
initialize();
d->mTextToSpeech->say(text);
}
qsizetype TextToSpeech::enqueue(const QString &text)
{
initialize();
return d->mTextToSpeech->enqueue(text);
}
void TextToSpeech::stop()
{
initialize();
d->mTextToSpeech->stop();
}
void TextToSpeech::pause()
{
initialize();
d->mTextToSpeech->pause();
}
void TextToSpeech::resume()
{
initialize();
d->mTextToSpeech->resume();
}
void TextToSpeech::setRate(double rate)
{
initialize();
d->mTextToSpeech->setRate(rate);
}
void TextToSpeech::setPitch(double pitch)
{
initialize();
d->mTextToSpeech->setPitch(pitch);
}
void TextToSpeech::setVolume(double volume)
{
initialize();
d->mTextToSpeech->setVolume(volume);
}
double TextToSpeech::volume() const
{
return d->mTextToSpeech ? d->mTextToSpeech->volume() : -1.0;
}
QVector<QLocale> TextToSpeech::availableLocales() const
{
return d->mTextToSpeech ? d->mTextToSpeech->availableLocales() : QVector<QLocale>();
}
QStringList TextToSpeech::availableVoices() const
{
QStringList lst;
const QVector<QVoice> voices = d->mTextToSpeech ? d->mTextToSpeech->availableVoices() : QVector<QVoice>();
lst.reserve(voices.count());
for (const QVoice &voice : voices) {
lst << voice.name();
}
return lst;
}
QStringList TextToSpeech::availableEngines() const
{
return QTextToSpeech::availableEngines();
}
void TextToSpeech::setLocale(const QLocale &locale)
{
initialize();
d->mTextToSpeech->setLocale(locale);
}
QLocale TextToSpeech::locale() const
{
return d->mTextToSpeech ? d->mTextToSpeech->locale() : QLocale();
}
#include "moc_texttospeech.cpp"
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