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, 20 insertions, 0 deletions

diff --git a/async/src/future.cpp b/async/src/future.cpp
index 970060b..4f3cd80 100644
--- a/async/src/future.cpp
+++ b/async/src/future.cpp
@@ -102,6 +102,21 @@ QString FutureBase::errorMessage() const
     return d->errorMessage;
 }
 
+void FutureBase::setProgress(int processed, int total)
+{
+    setProgress((qreal) processed / total);
+}
+
+void FutureBase::setProgress(qreal progress)
+{
+    for (auto watcher : d->watchers) {
+        if (watcher) {
+            watcher->futureProgressCallback(progress);
+        }
+    }
+}
+
+
 
 void FutureBase::addWatcher(FutureWatcherBase* watcher)
 {
@@ -128,6 +143,11 @@ void FutureWatcherBase::futureReadyCallback()
     Q_EMIT futureReady();
 }
 
+void FutureWatcherBase::futureProgressCallback(qreal progress)
+{
+    Q_EMIT futureProgress(progress);
+}
+
 void FutureWatcherBase::setFutureImpl(const FutureBase &future)
 {
     d->future = future;