Change signature of JobQueue::progress, add finished() signal

Now uses a qreal for progress instead of current and total
Also added a finished() signal because determining whether the queue is
finished should not be done by comparing a qreal with 1.0 as this is not
precise.

src/libcalamares/JobQueue.cpp

@@ -50,31 +50,33 @@ public:
 
     void run() override
     {
-        int total = m_jobs.size();
+        qreal total = m_jobs.size();
         int current = 0;
         for( auto job : m_jobs )
         {
-            emitProgress( current, total, job->prettyName() );
+            qreal percent = current / total;
+            emitProgress( percent, job->prettyName() );
             JobResult result = job->exec();
             if ( !result )
             {
                 emitFailed( result.message(), result.details() );
+                emitFinished();
                 return;
             }
             ++current;
         }
-        emitProgress( total, total, QString() );
+        emitProgress( 1, QString() );
+        emitFinished();
     }
 
 private:
     QList< Calamares::job_ptr > m_jobs;
     JobQueue* m_queue;
 
-    void emitProgress( int current, int total, const QString& prettyName )
+    void emitProgress( qreal percent, const QString& prettyName )
     {
         QMetaObject::invokeMethod( m_queue, "progress", Qt::QueuedConnection,
-            Q_ARG( int, current ),
-            Q_ARG( int, total ),
+            Q_ARG( qreal, percent ),
             Q_ARG( QString, prettyName )
         );
     }
@@ -86,6 +88,11 @@ private:
             Q_ARG( QString, details )
         );
     }
+
+    void emitFinished()
+    {
+        QMetaObject::invokeMethod( m_queue, "finished", Qt::QueuedConnection );
+    }
 };
 
 

src/libcalamares/JobQueue.h

@@ -46,7 +46,8 @@ public:
     void start();
 
 signals:
-    void progress( int current, int total, const QString& prettyName );
+    void progress( qreal percent, const QString& prettyName );
+    void finished();
     void failed( const QString& message, const QString& details );
 
 private:

src/libcalamaresui/InstallationViewStep.cpp

@@ -32,6 +32,7 @@ InstallationViewStep::InstallationViewStep( QObject* parent )
     , m_widget( new QWidget )
 {
     m_progressBar = new QProgressBar;
+    m_progressBar->setMaximum( 10000 );
     m_label = new QLabel;
     QVBoxLayout* layout = new QVBoxLayout( m_widget );
     layout->addWidget(m_progressBar);
@@ -88,10 +89,9 @@ InstallationViewStep::jobs() const
 }
 
 void
-InstallationViewStep::updateFromJobQueue( int current, int total, const QString& message )
+InstallationViewStep::updateFromJobQueue( qreal percent, const QString& message )
 {
-    m_progressBar->setMaximum( total );
-    m_progressBar->setValue( current );
+    m_progressBar->setValue( percent * m_progressBar->maximum() );
     m_label->setText( message );
 }
 

src/libcalamaresui/InstallationViewStep.h

@@ -51,7 +51,7 @@ private:
     QProgressBar* m_progressBar;
     QLabel* m_label;
 
-    void updateFromJobQueue( int current, int total, const QString& message );
+    void updateFromJobQueue( qreal percent, const QString& message );
 };
 
 }

src/modules/partition/tests/JobTests.cpp

@@ -32,36 +32,32 @@ Partition* firstFreePartition( PartitionNode* parent )
 QueueRunner::QueueRunner( JobQueue* queue )
     : m_queue( queue )
 {
-    connect( m_queue, &JobQueue::progress, this, &QueueRunner::onProgress );
+    connect( m_queue, &JobQueue::finished, this, &QueueRunner::onFinished );
     connect( m_queue, &JobQueue::failed, this, &QueueRunner::onFailed );
 }
 
 bool
 QueueRunner::run()
 {
-    m_done = false;
-    m_success = false;
+    m_finished = false;
+    m_success = true;
     m_queue->start();
     QEventLoop loop;
-    while ( !m_done )
+    while ( !m_finished )
         loop.processEvents();
     return m_success;
 }
 
 void
-QueueRunner::onProgress( int current, int total, const QString& prettyName )
+QueueRunner::onFinished()
 {
-    QVERIFY( current <= total );
-    if ( current < total )
-        return;
-    m_success = true;
-    m_done = true;
+    m_finished = true;
 }
 
 void
 QueueRunner::onFailed( const QString& message, const QString& details )
 {
-    m_done = true;
+    m_success = false;
     QString msg = message + "\ndetails: " + details;
     QFAIL( qPrintable( msg ) );
 }

src/modules/partition/tests/JobTests.h

@@ -25,10 +25,10 @@ public:
     bool run();
 
 private:
-    void onProgress( int current, int total, const QString& prettyName );
     void onFailed( const QString& message, const QString& details );
+    void onFinished();
     Calamares::JobQueue* m_queue;
-    bool m_done;
+    bool m_finished;
     bool m_success;
 };