From ef52350f7db39e9f39a83212ba469bdca6a72cb5 Mon Sep 17 00:00:00 2001
From: Jeremy Whiting <jpwhiting@kde.org>
Date: Thu, 26 Sep 2019 00:08:50 -0600
Subject: [PATCH] When tts engine is changed via okular settings recreate tts
 object.

---
 ui/tts.cpp | 20 ++++++++++++++++++++
 ui/tts.h   |  1 +
 2 files changed, 21 insertions(+)

diff --git a/ui/tts.cpp b/ui/tts.cpp
index d309576da..37675d0bb 100644
--- a/ui/tts.cpp
+++ b/ui/tts.cpp
@@ -33,12 +33,19 @@ public:
 
     OkularTTS *q;
     QTextToSpeech *speech;
+    // Which speech engine was used when above object was created.
+    // When the setting changes, we need to stop speaking and recreate.
+    QString speechEngine;
 };
 
 OkularTTS::OkularTTS( QObject *parent )
     : QObject( parent ), d( new Private( this ) )
 {
+    // Initialize speechEngine so we can reinitialize if it changes.
+    d->speechEngine = Okular::Settings::ttsEngine();
     connect( d->speech, &QTextToSpeech::stateChanged, this, &OkularTTS::slotSpeechStateChanged);
+    connect( Okular::Settings::self(), &KConfigSkeleton::configChanged,
+             this, &OkularTTS::slotConfigChanged);
 }
 
 OkularTTS::~OkularTTS()
@@ -90,5 +97,18 @@ void OkularTTS::slotSpeechStateChanged(QTextToSpeech::State state)
     }
 }
 
+void OkularTTS::slotConfigChanged()
+{
+    const QString engine = Okular::Settings::ttsEngine();
+    if (engine != d->speechEngine)
+    {
+        d->speech->stop();
+        delete d->speech;
+        d->speech = new QTextToSpeech(engine);
+        connect( d->speech, &QTextToSpeech::stateChanged, this, &OkularTTS::slotSpeechStateChanged);
+        d->speechEngine = engine;
+    }
+}
+
 #include "moc_tts.cpp"
 
diff --git a/ui/tts.h b/ui/tts.h
index 9030a88a1..eaa8557cb 100644
--- a/ui/tts.h
+++ b/ui/tts.h
@@ -26,6 +26,7 @@ class OkularTTS : public QObject
 
     public slots:
         void slotSpeechStateChanged(QTextToSpeech::State state);
+        void slotConfigChanged();
 
     signals:
         void isSpeaking( bool speaking );