Support middle clicking of Back/Forward/Up/Home toolbar buttons

This opens the resulting page in a new tab.

BUG: 358649

Differential Revision: https://phabricator.kde.org/D7390

1 files changed, 58 insertions, 0 deletions

diff --git a/src/middleclickactioneventfilter.cpp b/src/middleclickactioneventfilter.cpp
new file mode 100644
index 000000000..e0917850a
--- /dev/null
+++ b/src/middleclickactioneventfilter.cpp
@@ -0,0 +1,58 @@
+/***************************************************************************
+ *   Copyright (C) 2017 Kai Uwe Broulik <[email protected]>            *
+ *                                                                         *
+ *   This program is free software; you can redistribute it and/or modify  *
+ *   it under the terms of the GNU General Public License as published by  *
+ *   the Free Software Foundation; either version 2 of the License, or     *
+ *   (at your option) any later version.                                   *
+ *                                                                         *
+ *   This program is distributed in the hope that it will be useful,       *
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
+ *   GNU General Public License for more details.                          *
+ *                                                                         *
+ *   You should have received a copy of the GNU General Public License     *
+ *   along with this program; if not, write to the                         *
+ *   Free Software Foundation, Inc.,                                       *
+ *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA            *
+ ***************************************************************************/
+
+#include "middleclickactioneventfilter.h"
+
+#include <QAction>
+#include <QEvent>
+#include <QMouseEvent>
+#include <QToolBar>
+
+MiddleClickActionEventFilter::MiddleClickActionEventFilter(QObject *parent) : QObject(parent)
+{
+
+}
+
+MiddleClickActionEventFilter::~MiddleClickActionEventFilter() = default;
+
+bool MiddleClickActionEventFilter::eventFilter(QObject *watched, QEvent *event)
+{
+    if (event->type() == QEvent::MouseButtonPress
+            || event->type() == QEvent::MouseButtonRelease) {
+        QMouseEvent *me = static_cast<QMouseEvent *>(event);
+
+        if (me->button() == Qt::MiddleButton) {
+            QToolBar *toolBar = qobject_cast<QToolBar *>(watched);
+
+            QAction *action = toolBar->actionAt(me->pos());
+            if (action) {
+                if (event->type() == QEvent::MouseButtonPress) {
+                    m_lastMiddlePressedAction = action;
+                } else if (event->type() == QEvent::MouseButtonRelease) {
+                    if (m_lastMiddlePressedAction == action) {
+                        emit actionMiddleClicked(action);
+                    }
+                    m_lastMiddlePressedAction = nullptr;
+                }
+            }
+        }
+    }
+
+    return QObject::eventFilter(watched, event);
+}