Async: implement progress reporting through future

This is a simplified progress reporting, since it does not report progress
of ther overcall Job chain, but only of individual tasks, which makes it
only really useful on one-task Jobs.

TODO: propagate subjob progress to the Future user gets copy of
TODO: compound progress reporting (be able to report a progress of the overall
      Job chain)

1 files changed, 5 insertions, 0 deletions

diff --git a/async/src/future.h b/async/src/future.h
index bc18f00..32c1015 100644
--- a/async/src/future.h
+++ b/async/src/future.h
@@ -54,6 +54,9 @@ public:
     int errorCode() const;
     QString errorMessage() const;
 
+    void setProgress(qreal progress);
+    void setProgress(int processed, int total);
+
 protected:
     class PrivateBase : public QSharedData
     {
@@ -197,12 +200,14 @@ class FutureWatcherBase : public QObject
 
 Q_SIGNALS:
     void futureReady();
+    void futureProgress(qreal progress);
 
 protected:
     FutureWatcherBase(QObject *parent = nullptr);
     virtual ~FutureWatcherBase();
 
     void futureReadyCallback();
+    void futureProgressCallback(qreal progress);
 
     void setFutureImpl(const Async::FutureBase &future);