Improvements for the TTS example application

- Remove double initialization of the default engine on startup
- Preserve volume, pitch and speech rate when the engine changes
- Enable QTextToSpeech log output

Change-Id: I87e197315570c65e2dee9c66fde7eabd729f93f2
Reviewed-by: Jeremy Whiting <jpwhiting@kde.org>
Reviewed-by: Lars Knoll <lars.knoll@theqtcompany.com>
Reviewed-by: Frederik Gladhorn <frederik.gladhorn@theqtcompany.com>

1 files changed, 6 insertions, 1 deletions

diff --git a/examples/speech/hello_speak/mainwindow.cpp b/examples/speech/hello_speak/mainwindow.cpp
index 31e2498..d22d931 100644
--- a/examples/speech/hello_speak/mainwindow.cpp
+++ b/examples/speech/hello_speak/mainwindow.cpp
@@ -41,12 +41,14 @@
 
 
 #include "mainwindow.h"
+#include <QLoggingCategory>
 
 MainWindow::MainWindow(QWidget *parent)
     : QMainWindow(parent),
-    m_speech(new QTextToSpeech(this))
+    m_speech(0)
 {
     ui.setupUi(this);
+    QLoggingCategory::setFilterRules(QStringLiteral("qt.speech.tts=true \n qt.speech.tts.*=true"));
 
     // Populate engine selection list
     ui.engine->addItem("Default", QString("default"));
@@ -118,6 +120,9 @@ void MainWindow::engineSelected(int index)
         if (locale.name() == current.name())
             current = locale;
     }
+    setRate(ui.volume->value());
+    setPitch(ui.pitch->value());
+    m_speech->setVolume(ui.volume->value());
     connect(ui.stopButton, &QPushButton::clicked, m_speech, &QTextToSpeech::stop);
     connect(ui.pauseButton, &QPushButton::clicked, m_speech, &QTextToSpeech::pause);
     connect(ui.resumeButton, &QPushButton::clicked, m_speech, &QTextToSpeech::resume);