speedwidget class: excess QtConcurent usage removal

src/CMakeLists.txt

@@ -13,7 +13,7 @@ find_package(LibtorrentRasterbar REQUIRED)
 # Qt
 list(APPEND QBT_QT_COMPONENTS Core Network Xml)
 if (GUI)
-    list (APPEND QBT_QT_COMPONENTS Concurrent Gui Svg Widgets)
+    list (APPEND QBT_QT_COMPONENTS Gui Svg Widgets)
     if (WIN32)
         list (APPEND QBT_QT_COMPONENTS WinExtras)
     endif(WIN32)

src/gui/properties/CMakeLists.txt

@@ -44,4 +44,4 @@ speedplotview.cpp
 
 add_library(qbt_properties STATIC ${QBT_PROPERTIES_HEADERS} ${QBT_PROPERTIES_SOURCES} ${QBT_PROPERTIES_FORMS})
 target_link_libraries(qbt_properties qbt_base)
-target_link_libraries(qbt_properties Qt5::Widgets Qt5::Concurrent)
+target_link_libraries(qbt_properties Qt5::Widgets)

src/gui/properties/speedwidget.cpp

@@ -34,6 +34,7 @@
 #include <QMenu>
 #include <QSignalMapper>
 #include <QThread>
+#include <QTimer>
 
 #include <libtorrent/session_status.hpp>
 
@@ -116,8 +117,9 @@ SpeedWidget::SpeedWidget(PropertiesWidget *parent)
 
     loadSettings();
 
-    m_isUpdating = true;
-    m_updateFuture = QtConcurrent::run(this, &SpeedWidget::update);
+    QTimer *localUpdateTimer = new QTimer(this);
+    connect(localUpdateTimer, &QTimer::timeout, this, &SpeedWidget::update);
+    localUpdateTimer->start(1000);
 
     m_plot->show();
 }
@@ -125,19 +127,12 @@ SpeedWidget::SpeedWidget(PropertiesWidget *parent)
 SpeedWidget::~SpeedWidget()
 {
     qDebug("SpeedWidget::~SpeedWidget() ENTER");
-
-    m_isUpdating = false;
-    m_updateFuture.waitForFinished();
-
     saveSettings();
-
     qDebug("SpeedWidget::~SpeedWidget() EXIT");
 }
 
 void SpeedWidget::update()
 {
-    while (m_isUpdating) {
-
     const BitTorrent::SessionStatus &btStatus = BitTorrent::Session::instance()->status();
 
     SpeedPlotView::PointData point;
@@ -154,14 +149,6 @@ void SpeedWidget::update()
     point.y[SpeedPlotView::TRACKER_DOWN] = btStatus.trackerDownloadRate;
 
     m_plot->pushPoint(point);
-
-        QMetaObject::invokeMethod(this, "graphUpdate", Qt::QueuedConnection);
-        QThread::msleep(1000);
-    }
-}
-
-void SpeedWidget::graphUpdate()
-{
     m_plot->replot();
 }
 

src/gui/properties/speedwidget.h

@@ -31,7 +31,6 @@
 
 #include <QWidget>
 #include <QComboBox>
-#include <QtConcurrentRun>
 
 #include "speedplotview.h"
 
@@ -64,12 +63,11 @@ public:
 private slots:
     void onPeriodChange(int period);
     void onGraphChange(int id);
+    void update();
 
 private:
-    void update();
     void loadSettings();
     void saveSettings() const;
-    Q_INVOKABLE void graphUpdate();
 
     QVBoxLayout *m_layout;
     QHBoxLayout *m_hlayout;
@@ -81,9 +79,6 @@ private:
     QMenu *m_graphsMenu;
     QList<QAction *> m_graphsMenuActions;
     QSignalMapper *m_graphsSignalMapper;
-
-    QFuture<void> m_updateFuture;
-    bool m_isUpdating;
 };
 
 #endif // SPEEDWIDGET_H

src/src.pro

@@ -19,7 +19,7 @@ nogui {
     DEFINES += DISABLE_GUI
 } else {
     TARGET = qbittorrent
-    QT += xml concurrent svg widgets
+    QT += xml svg widgets
 
     CONFIG(static) {
         DEFINES += QBT_STATIC_QT