[partition] Introduce convenience translation for progress.

src/modules/partition/jobs/PartitionJob.cpp

@@ -21,3 +21,12 @@
 PartitionJob::PartitionJob( Partition* partition )
     : m_partition( partition )
 {}
+
+void PartitionJob::progress(int percent)
+{
+    if ( percent < 0 )
+        percent = 0;
+    if ( percent > 100 )
+        percent = 100;
+    emit progress( qreal( percent / 100.0 ) );
+}

src/modules/partition/jobs/PartitionJob.h

@@ -37,6 +37,14 @@ public:
         return m_partition;
     }
 
+public slots:
+    /** @brief Translate from KPMCore to Calamares progress.
+     *
+     * KPMCore presents progress as an integer percent from 0 .. 100,
+     * while Calamares uses a qreal from 0 .. 1.00 .
+     */
+    void progress( int percent );
+
 protected:
     Partition* m_partition;
 };

src/modules/partition/jobs/ResizePartitionJob.cpp

@@ -80,7 +80,7 @@ ResizePartitionJob::exec()
     m_partition->setLastSector( m_oldLastSector );
     ResizeOperation op(*m_device, *m_partition, m_newFirstSector, m_newLastSector);
     op.setStatus(Operation::StatusRunning);
-    connect(&op, &Operation::progress, [&](int percent) { emit progress(percent / 100.0); } );
+    connect(&op, &Operation::progress, this, &ResizePartitionJob::progress );
 
     QString errorMessage = tr( "The installer failed to resize partition %1 on disk '%2'." )
                        .arg( m_partition->partitionPath() )

src/modules/partition/jobs/SetPartitionFlagsJob.cpp

@@ -135,10 +135,7 @@ SetPartFlagsJob::exec()
     Report report ( nullptr );
     SetPartFlagsOperation op( *m_device, *partition(), m_flags );
     op.setStatus( Operation::StatusRunning );
-    connect( &op, &Operation::progress, [&]( int percent )
-    {
-        emit progress( percent / 100.0 );
-    } );
+    connect( &op, &Operation::progress, this, &SetPartFlagsJob::progress );
 
     QString errorMessage = tr( "The installer failed to set flags on partition %1." )
                            .arg( m_partition->partitionPath() );