Demobrowser: Add handling of middle click and double click on tab bar.

Implement chromium-ish handling of tab bar handling.
Middle clicking on a tab closes the tab.
Double clicking on the tab bar opens a new tab.

Change-Id: I75d559f09b94c4af2bc4fc8c32339d5c25b357e9
Reviewed-by: Joerg Bornemann <joerg.bornemann@theqtcompany.com>

2 files changed, 18 insertions, 0 deletions

diff --git a/examples/webenginewidgets/demobrowser/tabwidget.cpp b/examples/webenginewidgets/demobrowser/tabwidget.cpp
index cb017e621..a14b22ffd 100644
--- a/examples/webenginewidgets/demobrowser/tabwidget.cpp
+++ b/examples/webenginewidgets/demobrowser/tabwidget.cpp
@@ -161,7 +161,17 @@ void TabBar::mousePressEvent(QMouseEvent *event)
 {
     if (event->button() == Qt::LeftButton)
         m_dragStartPos = event->pos();
+
     QTabBar::mousePressEvent(event);
+
+    // Middle click on tab should close it.
+    if (event->button() == Qt::MiddleButton) {
+        const QPoint pos = event->pos();
+        int index = tabAt(pos);
+        if (index != -1) {
+            emit closeTab(index);
+        }
+    }
 }
 
 void TabBar::mouseMoveEvent(QMouseEvent *event)
@@ -233,6 +243,7 @@ TabWidget::TabWidget(QWidget *parent)
     connect(m_tabBar, SIGNAL(reloadTab(int)), this, SLOT(reloadTab(int)));
     connect(m_tabBar, SIGNAL(reloadAllTabs()), this, SLOT(reloadAllTabs()));
     connect(m_tabBar, SIGNAL(tabMoved(int,int)), this, SLOT(moveTab(int,int)));
+    connect(m_tabBar, SIGNAL(tabBarDoubleClicked(int)), this, SLOT(handleTabBarDoubleClicked(int)));
     setTabBar(m_tabBar);
     setDocumentMode(true);
 
@@ -388,6 +399,12 @@ void TabWidget::fullScreenRequested(QWebEngineFullScreenRequest request)
     }
 }
 
+void TabWidget::handleTabBarDoubleClicked(int index)
+{
+    if (index != -1) return;
+    newTab();
+}
+
 QAction *TabWidget::newTabAction() const
 {
     return m_newTabAction;
diff --git a/examples/webenginewidgets/demobrowser/tabwidget.h b/examples/webenginewidgets/demobrowser/tabwidget.h
index 5ef403bf5..872e1c11b 100644
--- a/examples/webenginewidgets/demobrowser/tabwidget.h
+++ b/examples/webenginewidgets/demobrowser/tabwidget.h
@@ -221,6 +221,7 @@ private slots:
     void windowCloseRequested();
     void moveTab(int fromIndex, int toIndex);
     void fullScreenRequested(QWebEngineFullScreenRequest request);
+    void handleTabBarDoubleClicked(int index);
 
 private:
     void setupPage(QWebEnginePage* page);