Make automatic updates cancelable by the user

YACReaderLibrary/libraries_update_coordinator.h

@@ -15,6 +15,8 @@ public:
 
     void init();
     void updateLibraries();
+
+public slots:
     void stop();
     void cancel();
 

YACReaderLibrary/library_window.cpp

@@ -513,6 +513,8 @@ void LibraryWindow::setupCoordinators()
     connect(librariesUpdateCoordinator, &LibrariesUpdateCoordinator::updateEnded, this, &LibraryWindow::reloadCurrentLibrary);
 
     librariesUpdateCoordinator->init();
+
+    connect(sideBar->librariesTitle, &YACReaderTitledToolBar::cancelOperationRequested, librariesUpdateCoordinator, &LibrariesUpdateCoordinator::cancel);
 }
 
 void LibraryWindow::createActions()

YACReaderLibrary/options_dialog.cpp

@@ -278,7 +278,7 @@ QWidget *OptionsDialog::createLibrariesTab()
     librariesBoxLayout->addWidget(updateLibrariesAtCertainTimeCheck);
     librariesBoxLayout->addLayout(updateLibrariesAtCertainTimeLayout);
 
-    librariesBoxLayout->addWidget(new QLabel(tr("WARNING! During library updates writes to the database are disabled!\nDon't schedule updates while you may be using the app actively.")));
+    librariesBoxLayout->addWidget(new QLabel(tr("WARNING! During library updates writes to the database are disabled!\nDon't schedule updates while you may be using the app actively.\nTo stop an automatic update tap on the loading indicator next to the Libraries title.")));
 
     auto librariesBox = new QGroupBox(tr("Libraries"));
     librariesBox->setLayout(librariesBoxLayout);

custom_widgets/yacreader_busy_widget.cpp

@@ -63,6 +63,12 @@ BusyIndicator::IndicatorStyle BusyIndicator::indicatorStyle() const
     return m_style;
 }
 
+void BusyIndicator::mouseReleaseEvent(QMouseEvent *event)
+{
+    Q_UNUSED(event);
+    emit clicked();
+}
+
 QPixmap BusyIndicator::generatePixmap(int side)
 {
     QPixmap pixmap(QSize(side, side));

custom_widgets/yacreader_busy_widget.h

@@ -22,15 +22,17 @@ public:
 
     explicit BusyIndicator(QWidget *parent = 0, int size = 30);
 
-    void paintEvent(QPaintEvent *);
-    QSize minimumSizeHint() const;
-    QSize sizeHint() const;
+    void paintEvent(QPaintEvent *) override;
+    QSize minimumSizeHint() const override;
+    QSize sizeHint() const override;
 
     void setIndicatorStyle(IndicatorStyle);
     void setColor(QColor color);
     IndicatorStyle indicatorStyle() const;
+    void mouseReleaseEvent(QMouseEvent *event) override;
 
 signals:
+    void clicked();
 
 private slots:
     void rotate();

custom_widgets/yacreader_titled_toolbar.cpp

@@ -71,6 +71,7 @@ YACReaderTitledToolBar::YACReaderTitledToolBar(const QString &title, QWidget *pa
 
     nameLabel = new DropShadowLabel(this);
     busyIndicator = new BusyIndicator(this, 12);
+    connect(busyIndicator, &BusyIndicator::clicked, this, &YACReaderTitledToolBar::cancelOperationRequested);
     busyIndicator->setIndicatorStyle(BusyIndicator::StyleArc);
 #ifdef Y_MAC_UI
     busyIndicator->setColor(QColor("#808080"));

custom_widgets/yacreader_titled_toolbar.h

@@ -34,6 +34,7 @@ public:
     explicit YACReaderTitledToolBar(const QString &title, QWidget *parent = 0);
 
 signals:
+    void cancelOperationRequested();
 
 public slots:
     void addAction(QAction *action);