Enable the forward and back mouse buttons.
authorSoren Stoutner <soren@stoutner.com>
Mon, 31 Jan 2022 22:55:09 +0000 (15:55 -0700)
committerSoren Stoutner <soren@stoutner.com>
Mon, 31 Jan 2022 22:55:09 +0000 (15:55 -0700)
src/CMakeLists.txt
src/mainview.cpp
src/mainview.h
src/mouseeventfilter.cpp [new file with mode: 0644]
src/mouseeventfilter.h [new file with mode: 0644]

index 320ae9dd5fb569090398d14f287dfaeb837ac2c0..1043918135943e9c0b8c46e380b186fed6d08767 100644 (file)
@@ -24,6 +24,7 @@ target_sources(privacy-browser PRIVATE
     browserwindow.cpp
     main.cpp
     mainview.cpp
+    mouseeventfilter.cpp
 )
 
 # Add the Qt logging category.  This will create the `debug.h` header file.
index 75767bb587d7ad876f49f4a8498f0ed19dac16aa..8749760773e6acdd9540a236855ad761d805a6e2 100644 (file)
 // Application headers
 #include "browserwindow.h"
 #include "mainview.h"
+#include "mouseeventfilter.h"
 #include "settings.h"
 
 // KDE Framework headers.
 #include <KLineEdit>
 
-// Qt framework headers.
+// Qt headers.
 #include <QWebEngineHistory>
 #include <QWebEngineView>
 
@@ -59,6 +60,12 @@ MainView::MainView(QWidget *parent) : QWidget(parent)
     connect(backButtonPointer, SIGNAL(clicked()), webEngineViewPointer, SLOT(back()));
     connect(forwardButtonPointer, SIGNAL(clicked()), webEngineViewPointer, SLOT(forward()));
 
+    // Instantiate the mouse event pointer.
+    MouseEventFilter *mouseEventFilterPointer = new MouseEventFilter(webEngineViewPointer);
+
+    // Install the mouse event filter.
+    qApp->installEventFilter(mouseEventFilterPointer);
+
     // Listen for hovered link URLs.
     connect(webEnginePagePointer, SIGNAL(linkHovered(QString)), this, SLOT(pageLinkHovered(QString)));
 
@@ -96,6 +103,7 @@ void MainView::updateInterface()
         urlLineEditPointer->setUrl(webEngineViewPointer->url().toString());
     }
 
+    // Update the status of the forward and back buttons.
     backButtonPointer->setEnabled(webEngineHistoryPointer->canGoBack());
     forwardButtonPointer->setEnabled(webEngineHistoryPointer->canGoForward());
 
index a28565e9407be77b60d0adeea1a98939684921d7..5e5535fba43fb741a9ca5fecdc89ea454cc3a544 100644 (file)
@@ -29,7 +29,7 @@ class MainView : public QWidget
     Q_OBJECT
 
 public:
-    // The default contructor.
+    // The primary contructor.
     explicit MainView(QWidget *parent);
 
 signals:
diff --git a/src/mouseeventfilter.cpp b/src/mouseeventfilter.cpp
new file mode 100644 (file)
index 0000000..4f1ec82
--- /dev/null
@@ -0,0 +1,70 @@
+/*
+ * 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;
+}
diff --git a/src/mouseeventfilter.h b/src/mouseeventfilter.h
new file mode 100644 (file)
index 0000000..82cee6f
--- /dev/null
@@ -0,0 +1,43 @@
+/*
+ * 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/>.
+ */
+
+#ifndef MOUSEEVENTFILTER_H
+#define MOUSEEVENTFILTER_H
+
+// Qt headers.
+#include <QObject>
+#include <QWebEngineView>
+
+class MouseEventFilter : public QObject
+{
+    // Include the Q_OBJECT macro.
+    Q_OBJECT
+
+public:
+    // The primary constructor.
+    MouseEventFilter(QWebEngineView *webEngineView);
+
+protected:
+    bool eventFilter(QObject *objectPointer, QEvent *eventPointer) override;
+
+private:
+    // Define the private variables.
+    QWebEngineView *webEngineViewPointer;
+};
+#endif