Convert uses of QTime as a timer to QElapsedTimer

Change-Id: I2297f61efa5adf9ea5194c7f3ff68574cbcf452c
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
 
 
 
 

9 files changed, 19 insertions, 21 deletions

diff --git a/examples/network/downloadmanager/downloadmanager.cpp b/examples/network/downloadmanager/downloadmanager.cpp
index e820b4ff70..9e0c03c6af 100644
--- a/examples/network/downloadmanager/downloadmanager.cpp
+++ b/examples/network/downloadmanager/downloadmanager.cpp
@@ -132,7 +132,7 @@ void DownloadManager::startNextDownload()
 
     // prepare the output
     printf("Downloading %s...\n", url.toEncoded().constData());
-    downloadTime.start();
+    downloadTimer.start();
 }
 
 void DownloadManager::downloadProgress(qint64 bytesReceived, qint64 bytesTotal)
@@ -140,7 +140,7 @@ void DownloadManager::downloadProgress(qint64 bytesReceived, qint64 bytesTotal)
     progressBar.setStatus(bytesReceived, bytesTotal);
 
     // calculate the download speed
-    double speed = bytesReceived * 1000.0 / downloadTime.elapsed();
+    double speed = bytesReceived * 1000.0 / downloadTimer.elapsed();
     QString unit;
     if (speed < 1024) {
         unit = "bytes/sec";
diff --git a/examples/network/downloadmanager/downloadmanager.h b/examples/network/downloadmanager/downloadmanager.h
index 4bc6351ff9..818a774f1f 100644
--- a/examples/network/downloadmanager/downloadmanager.h
+++ b/examples/network/downloadmanager/downloadmanager.h
@@ -83,7 +83,7 @@ private:
     QQueue<QUrl> downloadQueue;
     QNetworkReply *currentDownload = nullptr;
     QFile output;
-    QTime downloadTime;
+    QElapsedTimer downloadTimer;
     TextProgressBar progressBar;
 
     int downloadedCount = 0;
diff --git a/examples/network/torrent/ratecontroller.cpp b/examples/network/torrent/ratecontroller.cpp
index 87c65096b6..96474806f5 100644
--- a/examples/network/torrent/ratecontroller.cpp
+++ b/examples/network/torrent/ratecontroller.cpp
@@ -96,8 +96,8 @@ void RateController::transfer()
     if (sockets.isEmpty())
         return;
 
-    int msecs = 1000;
-    if (!stopWatch.isNull())
+    qint64 msecs = 1000;
+    if (stopWatch.isValid())
         msecs = qMin(msecs, stopWatch.elapsed());
 
     qint64 bytesToWrite = (upLimit * msecs) / 1000;
diff --git a/examples/network/torrent/ratecontroller.h b/examples/network/torrent/ratecontroller.h
index a4aa596ce1..f8bff0cc36 100644
--- a/examples/network/torrent/ratecontroller.h
+++ b/examples/network/torrent/ratecontroller.h
@@ -53,7 +53,7 @@
 
 #include <QObject>
 #include <QSet>
-#include <QTime>
+#include <QElapsedTimer>
 
 class PeerWireClient;
 
@@ -79,7 +79,7 @@ public slots:
     void scheduleTransfer();
 
 private:
-    QTime stopWatch;
+    QElapsedTimer stopWatch;
     QSet<PeerWireClient *> sockets;
     int upLimit;
     int downLimit;
diff --git a/examples/opengl/qopenglwidget/glwidget.h b/examples/opengl/qopenglwidget/glwidget.h
index de7805a907..0ad2581cb8 100644
--- a/examples/opengl/qopenglwidget/glwidget.h
+++ b/examples/opengl/qopenglwidget/glwidget.h
@@ -56,7 +56,7 @@
 #include <QOpenGLBuffer>
 #include <QVector3D>
 #include <QMatrix4x4>
-#include <QTime>
+#include <QElapsedTimer>
 #include <QVector>
 #include <QPushButton>
 
@@ -106,7 +106,7 @@ private:
     bool m_qtLogo;
     QList<Bubble *> m_bubbles;
     int m_frames;
-    QTime m_time;
+    QElapsedTimer m_time;
     QOpenGLShader *m_vshader1;
     QOpenGLShader *m_fshader1;
     QOpenGLShader *m_vshader2;
diff --git a/examples/qtconcurrent/wordcount/main.cpp b/examples/qtconcurrent/wordcount/main.cpp
index 32cb4d0e08..ae8542a761 100644
--- a/examples/qtconcurrent/wordcount/main.cpp
+++ b/examples/qtconcurrent/wordcount/main.cpp
@@ -54,7 +54,7 @@
 #include <QString>
 #include <QStringList>
 #include <QDir>
-#include <QTime>
+#include <QElapsedTimer>
 #include <QApplication>
 #include <QDebug>
 
@@ -146,19 +146,19 @@ int main(int argc, char** argv)
 
     int singleThreadTime = 0;
     {
-        QTime time;
-        time.start();
+        QElapsedTimer timer;
+        timer.start();
         WordCount total = singleThreadedWordCount(files);
-        singleThreadTime = time.elapsed();
+        singleThreadTime = timer.elapsed();
         qDebug() << "single thread" << singleThreadTime;
     }
 
     int mapReduceTime = 0;
     {
-        QTime time;
-        time.start();
+        QElapsedTimer timer;
+        timer.start();
         WordCount total = mappedReduced(files, countWords, reduce);
-        mapReduceTime = time.elapsed();
+        mapReduceTime = timer.elapsed();
         qDebug() << "MapReduce" << mapReduceTime;
     }
     qDebug() << "MapReduce speedup x" << ((double)singleThreadTime - (double)mapReduceTime) / (double)mapReduceTime + 1;
diff --git a/examples/widgets/graphicsview/boxes/scene.cpp b/examples/widgets/graphicsview/boxes/scene.cpp
index 7f62ac894b..d51124aed7 100644
--- a/examples/widgets/graphicsview/boxes/scene.cpp
+++ b/examples/widgets/graphicsview/boxes/scene.cpp
@@ -533,8 +533,6 @@ Scene::Scene(int width, int height, int maxTextureSize)
     m_timer->setInterval(20);
     connect(m_timer, &QTimer::timeout, this, [this](){ update(); });
     m_timer->start();
-
-    m_time.start();
 }
 
 Scene::~Scene()
diff --git a/examples/widgets/graphicsview/boxes/scene.h b/examples/widgets/graphicsview/boxes/scene.h
index ccb6f368cd..ffff01358f 100644
--- a/examples/widgets/graphicsview/boxes/scene.h
+++ b/examples/widgets/graphicsview/boxes/scene.h
@@ -220,7 +220,7 @@ private:
     void initGL();
     QPointF pixelPosToViewPos(const QPointF& p);
 
-    QTime m_time;
+    QTime m_time; // ### Qt 6: remove (unused)
     int m_lastTime;
     int m_mouseEventTime;
     int m_distExp;
diff --git a/examples/widgets/painting/deform/pathdeform.h b/examples/widgets/painting/deform/pathdeform.h
index b7c7386e2a..af869badc9 100644
--- a/examples/widgets/painting/deform/pathdeform.h
+++ b/examples/widgets/painting/deform/pathdeform.h
@@ -54,7 +54,7 @@
 #include "arthurwidgets.h"
 
 #include <QBasicTimer>
-#include <QDateTime>
+#include <QElapsedTimer>
 #include <QPainterPath>
 
 class PathDeformRenderer : public ArthurFrame
@@ -103,7 +103,7 @@ private:
     QBasicTimer m_repaintTimer;
 //     QBasicTimer m_fpsTimer;
 //     int m_fpsCounter;
-    QTime m_repaintTracker;
+    QElapsedTimer m_repaintTracker;
 
     QVector<QPainterPath> m_paths;
     QVector<QPointF> m_advances;