CMakeProjectManager: Add elapsed timer

Change-Id: I1e7bcd60cae0193b4d16f20175b76550aaefbf9c
Reviewed-by: Eike Ziller <eike.ziller@qt.io>

src/plugins/cmakeprojectmanager/cmakeprocess.cpp

@@ -38,6 +38,7 @@
 
 #include <QDir>
 #include <QObject>
+#include <QTime>
 #include <QTimer>
 
 namespace CMakeProjectManager {
@@ -149,6 +150,7 @@ void CMakeProcess::run(const BuildDirParameters &parameters, const QStringList &
 
     process->setCommand(commandLine);
     emit started();
+    m_elapsed.start();
     process->start();
 
     m_process = std::move(process);
@@ -234,6 +236,12 @@ void CMakeProcess::handleProcessFinished(int code, QProcess::ExitStatus status)
     m_future->reportFinished();
 
     emit finished(code, status);
+
+    const QTime format = QTime(0, 0, 0, 0).addMSecs(m_elapsed.elapsed() + 500);
+    QString time = format.toString("h:mm:ss");
+    if (time.startsWith("0:"))
+        time.remove(0, 2); // Don't display zero hours
+    Core::MessageManager::write(tr("Elapsed time: %1.") .arg(time));
 }
 
 void CMakeProcess::checkForCancelled()

src/plugins/cmakeprojectmanager/cmakeprocess.h

@@ -31,6 +31,7 @@
 
 #include <utils/qtcprocess.h>
 
+#include <QElapsedTimer>
 #include <QFutureInterface>
 #include <QTimer>
 
@@ -73,6 +74,7 @@ private:
     std::unique_ptr<QFutureInterface<void>> m_future;
     bool m_processWasCanceled = false;
     QTimer m_cancelTimer;
+    QElapsedTimer m_elapsed;
 };
 
 } // namespace Internal