Enable the forward and back mouse buttons.

[PrivacyBrowserPC.git] / src / mouseeventfilter.cpp

diff --git a/src/mouseeventfilter.cpp b/src/mouseeventfilter.cpp
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+++ b/src/mouseeventfilter.cpp
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+/*
+ * Copyright © 2022 Soren Stoutner <soren@stoutner.com>.
+ *
+ * This file is part of Privacy Browser PC <https://www.stoutner.com/privacy-browser-pc>.
+ *
+ * Privacy Browser PC 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 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Privacy Browser PC 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 Privacy Browser PC.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+// Application headers.
+#include "mouseeventfilter.h"
+
+// Qt headers.
+#include <QEvent>
+#include <QMouseEvent>
+
+// The primary constructor.
+MouseEventFilter::MouseEventFilter(QWebEngineView *webEngineView) : QObject()
+{
+    // Save a handle to the WebEngine view.
+    webEngineViewPointer = webEngineView;
+};
+
+bool MouseEventFilter::eventFilter(QObject *objectPointer, QEvent *eventPointer)
+{
+    // Only process mouse button press events.
+    if (eventPointer->type() == QEvent::MouseButtonPress)
+    {
+        // Tell the compiler to ignore the unused object pointer.
+        (void)objectPointer;
+
+        // Cast the event to a mouse event.
+        QMouseEvent *mouseEventPointer = static_cast<QMouseEvent *>(eventPointer);
+
+        // Run the command according to the button that was pushed.
+        switch (mouseEventPointer->button())
+        {
+            case (Qt::BackButton):
+                // Tell the WebEngine to go back.
+                webEngineViewPointer->back();
+
+                // Consume the event.
+                return true;
+
+            case (Qt::ForwardButton):
+                // Tell the WebEngine to go forward.
+                webEngineViewPointer->forward();
+
+                // Consume the event.
+                return true;
+
+            default:
+                // Do not consume the event.
+                return false;
+        }
+    }
+
+    // Do not consume the event.
+    return false;
+}