fixed #408

src/librssguard/definitions/definitions.h

@@ -95,6 +95,7 @@
 #define COOKIE_URL_IDENTIFIER ":COOKIE:"
 #define DEFAULT_NOTIFICATION_VOLUME 50
 #define MAX_THREADPOOL_THREADS 32
+#define WEB_BROWSER_SCROLL_STEP 50.0
 
 #define GOOGLE_SEARCH_URL "https://www.google.com/search?q=%1&ie=utf-8&oe=utf-8"
 #define GOOGLE_SUGGEST_URL "http://suggestqueries.google.com/complete/search?output=toolbar&hl=en&q=%1"

src/librssguard/gui/dialogs/formmain.cpp

@@ -236,6 +236,8 @@ QList<QAction*> FormMain::allActions() const {
   actions << m_ui->m_actionTabsCloseCurrent;
   actions << m_ui->m_actionTabsCloseAll;
   actions << m_ui->m_actionTabsCloseAllExceptCurrent;
+  actions << m_ui->m_actionBrowserScrollUp;
+  actions << m_ui->m_actionBrowserScrollDown;
   actions << m_actionToolbarMainMenu;
 
   return actions;
@@ -794,6 +796,9 @@ void FormMain::createConnections() {
   connect(qApp->feedReader(), &FeedReader::feedUpdatesProgress, this, &FormMain::onFeedUpdatesProgress);
   connect(qApp->feedReader(), &FeedReader::feedUpdatesFinished, this, &FormMain::onFeedUpdatesFinished);
 
+  connect(m_ui->m_actionBrowserScrollUp, &QAction::triggered, tabWidget(), &TabWidget::scrollUpCurrentBrowser);
+  connect(m_ui->m_actionBrowserScrollDown, &QAction::triggered, tabWidget(), &TabWidget::scrollDownCurrentBrowser);
+
   // Toolbar forwardings.
   connect(m_ui->m_actionFocusSearchFeeds,
           &QAction::triggered,

src/librssguard/gui/dialogs/formmain.ui

@@ -201,6 +201,9 @@
     <addaction name="separator"/>
     <addaction name="m_actionTabsNext"/>
     <addaction name="m_actionTabsPrevious"/>
+    <addaction name="separator"/>
+    <addaction name="m_actionBrowserScrollUp"/>
+    <addaction name="m_actionBrowserScrollDown"/>
    </widget>
    <addaction name="m_menuFile"/>
    <addaction name="m_menuView"/>
@@ -904,6 +907,16 @@
     <string>Focus articles search box</string>
    </property>
   </action>
+  <action name="m_actionBrowserScrollUp">
+   <property name="text">
+    <string>Scroll &amp;up browser</string>
+   </property>
+  </action>
+  <action name="m_actionBrowserScrollDown">
+   <property name="text">
+    <string>Scroll &amp;down browser</string>
+   </property>
+  </action>
  </widget>
  <customwidgets>
   <customwidget>

src/librssguard/gui/tabwidget.cpp

@@ -152,6 +152,14 @@ void TabWidget::setupIcons() {
   }
 }
 
+void TabWidget::scrollUpCurrentBrowser() {
+  currentWidget()->webBrowser()->scrollUp();
+}
+
+void TabWidget::scrollDownCurrentBrowser() {
+  currentWidget()->webBrowser()->scrollDown();
+}
+
 bool TabWidget::closeTab(int index) {
   if (tabBar()->tabType(index) == TabBar::TabType::Closable) {
     removeTab(index, true);

src/librssguard/gui/tabwidget.h

@@ -17,23 +17,25 @@ class RootItem;
 class FeedMessageViewer;
 
 class TabWidget : public QTabWidget {
-  Q_OBJECT
+    Q_OBJECT
 
   public:
-
     // Constructors and destructors.
     explicit TabWidget(QWidget* parent = nullptr);
     virtual ~TabWidget();
 
     // Manimulators for tabs.
-    int addTab(TabContent* widget, const QString&,
+    int addTab(TabContent* widget, const QString&, TabBar::TabType type = TabBar::TabType::NonClosable);
+    int addTab(TabContent* widget,
+               const QIcon& icon,
+               const QString& label,
                TabBar::TabType type = TabBar::TabType::NonClosable);
-    int addTab(TabContent* widget, const QIcon& icon,
-               const QString& label, TabBar::TabType type = TabBar::TabType::NonClosable);
-    int insertTab(int index, QWidget* widget, const QString& label,
-                  TabBar::TabType type = TabBar::TabType::Closable);
-    int insertTab(int index, QWidget* widget, const QIcon& icon,
-                  const QString& label, TabBar::TabType type = TabBar::TabType::NonClosable);
+    int insertTab(int index, QWidget* widget, const QString& label, TabBar::TabType type = TabBar::TabType::Closable);
+    int insertTab(int index,
+                  QWidget* widget,
+                  const QIcon& icon,
+                  const QString& label,
+                  TabBar::TabType type = TabBar::TabType::NonClosable);
     void removeTab(int index, bool clear_from_memory);
 
     // Returns tab bar.
@@ -55,6 +57,8 @@ class TabWidget : public QTabWidget {
     FeedMessageViewer* feedMessageViewer() const;
 
   public slots:
+    void scrollUpCurrentBrowser();
+    void scrollDownCurrentBrowser();
 
     // Called when number of tab pages changes.
     void checkTabBarVisibility();

src/librssguard/gui/webbrowser.cpp

@@ -113,6 +113,14 @@ void WebBrowser::setVerticalScrollBarPosition(double pos) {
   m_webView->setVerticalScrollBarPosition(pos);
 }
 
+void WebBrowser::scrollUp() {
+  setVerticalScrollBarPosition(verticalScrollBarPosition() - WEB_BROWSER_SCROLL_STEP);
+}
+
+void WebBrowser::scrollDown() {
+  setVerticalScrollBarPosition(verticalScrollBarPosition() + WEB_BROWSER_SCROLL_STEP);
+}
+
 void WebBrowser::reloadFontSettings() {
   QFont fon;
 

src/librssguard/gui/webbrowser.h

@@ -44,6 +44,9 @@ class WebBrowser : public TabContent {
     double verticalScrollBarPosition() const;
     void setVerticalScrollBarPosition(double pos);
 
+    void scrollUp();
+    void scrollDown();
+
   public slots:
     void clear(bool also_hide);
     void loadUrl(const QString& url);