fix: avoid create menu actions everytime when trigger context menu.

fix the minor memory leak issue, also bring some possibility to
implement custom keybinding.

And oops I also did another feature in this commit..
Now we are able to set mouse wheel behavior in config dialog.

CMakeLists.txt

@@ -30,6 +30,7 @@ set (PPIC_CPP_FILES
     app/main.cpp
     app/framelesswindow.cpp
     app/mainwindow.cpp
+    app/actionmanager.cpp
     app/graphicsview.cpp
     app/graphicsscene.cpp
     app/bottombuttongroup.cpp
@@ -47,6 +48,7 @@ set (PPIC_CPP_FILES
 set (PPIC_HEADER_FILES
     app/framelesswindow.h
     app/mainwindow.h
+    app/actionmanager.h
     app/graphicsview.h
     app/graphicsscene.h
     app/bottombuttongroup.h

app/actionmanager.cpp

@@ -0,0 +1,62 @@
+#include "actionmanager.h"
+
+#include "mainwindow.h"
+
+#include <QCoreApplication>
+
+#define CREATE_NEW_ACTION(window, action)\
+    action = new QAction(window);\
+    action->setObjectName(QString::fromUtf8( #action ));\
+    window->addAction(action);
+
+ActionManager::ActionManager()
+{
+
+}
+
+ActionManager::~ActionManager()
+{
+
+}
+
+void ActionManager::setupAction(MainWindow *mainWindow)
+{
+    CREATE_NEW_ACTION(mainWindow, actionCopyPixmap);
+    CREATE_NEW_ACTION(mainWindow, actionCopyFilePath);
+    CREATE_NEW_ACTION(mainWindow, actionPaste);
+    CREATE_NEW_ACTION(mainWindow, actionToggleStayOnTop);
+    CREATE_NEW_ACTION(mainWindow, actionToggleProtectMode);
+    CREATE_NEW_ACTION(mainWindow, actionSettings);
+    CREATE_NEW_ACTION(mainWindow, actionHelp);
+    CREATE_NEW_ACTION(mainWindow, actionProperties);
+    CREATE_NEW_ACTION(mainWindow, actionQuitApp);
+
+    retranslateUi(mainWindow);
+
+    QMetaObject::connectSlotsByName(mainWindow);
+}
+
+void ActionManager::retranslateUi(MainWindow *mainWindow)
+{
+    Q_UNUSED(mainWindow);
+
+    actionCopyPixmap->setText(QCoreApplication::translate("MainWindow", "Copy P&ixmap", nullptr));
+    actionCopyFilePath->setText(QCoreApplication::translate("MainWindow", "Copy &File Path", nullptr));
+    actionPaste->setText(QCoreApplication::translate("MainWindow", "&Paste", nullptr));
+    actionToggleStayOnTop->setText(QCoreApplication::translate("MainWindow", "Stay on top", nullptr));
+    actionToggleProtectMode->setText(QCoreApplication::translate("MainWindow", "Protected mode", nullptr));
+    actionSettings->setText(QCoreApplication::translate("MainWindow", "Configure...", nullptr));
+    actionHelp->setText(QCoreApplication::translate("MainWindow", "Help", nullptr));
+    actionProperties->setText(QCoreApplication::translate("MainWindow", "Properties", nullptr));
+    actionQuitApp->setText(QCoreApplication::translate("MainWindow", "Quit", nullptr));
+}
+
+void ActionManager::setupShortcuts()
+{
+    actionQuitApp->setShortcuts({
+        QKeySequence(Qt::Key_Space),
+        QKeySequence(Qt::Key_Escape)
+    });
+    actionQuitApp->setShortcutContext(Qt::ApplicationShortcut);
+}
+

app/actionmanager.h

@@ -0,0 +1,30 @@
+#ifndef ACTIONMANAGER_H
+#define ACTIONMANAGER_H
+
+#include <QAction>
+
+class MainWindow;
+
+class ActionManager
+{
+public:
+    ActionManager();
+    ~ActionManager();
+
+    void setupAction(MainWindow * mainWindow);
+    void retranslateUi(MainWindow *MainWindow);
+    void setupShortcuts();
+
+public:
+    QAction *actionCopyPixmap;
+    QAction *actionCopyFilePath;
+    QAction *actionPaste;
+    QAction *actionToggleStayOnTop;
+    QAction *actionToggleProtectMode;
+    QAction *actionSettings;
+    QAction *actionHelp;
+    QAction *actionProperties;
+    QAction *actionQuitApp;
+};
+
+#endif // ACTIONMANAGER_H

app/mainwindow.cpp

@@ -10,6 +10,7 @@
 #include "aboutdialog.h"
 #include "metadatamodel.h"
 #include "metadatadialog.h"
+#include "actionmanager.h"
 
 #include <QMouseEvent>
 #include <QMovie>
@@ -25,9 +26,11 @@
 #include <QClipboard>
 #include <QMimeData>
 #include <QWindow>
+#include <QTimer>
 
-MainWindow::MainWindow(QWidget *parent) :
+MainWindow::MainWindow(QWidget *parent)
-    FramelessWindow(parent)
+    : FramelessWindow(parent)
+    , m_am(new ActionManager)
 {
     if (Settings::instance()->stayOnTop()) {
         this->setWindowFlag(Qt::WindowStaysOnTopHint);
@@ -110,7 +113,7 @@ MainWindow::MainWindow(QWidget *parent) :
     connect(m_bottomButtonGroup, &BottomButtonGroup::zoomInBtnClicked,
             this, [ = ](){ m_graphicsView->zoomView(1.25); });
     connect(m_bottomButtonGroup, &BottomButtonGroup::zoomOutBtnClicked,
-            this, [ = ](){ m_graphicsView->zoomView(0.75); });
+            this, [ = ](){ m_graphicsView->zoomView(0.8); });
     connect(m_bottomButtonGroup, &BottomButtonGroup::toggleCheckerboardBtnClicked,
             this, [ = ](){ m_graphicsView->toggleCheckerboard(); });
     connect(m_bottomButtonGroup, &BottomButtonGroup::rotateRightBtnClicked,
@@ -130,14 +133,6 @@ MainWindow::MainWindow(QWidget *parent) :
         m_nextButton->setVisible(isGalleryAvailable());
     });
 
-    QShortcut * quitAppShorucut = new QShortcut(QKeySequence(Qt::Key_Space), this);
-    connect(quitAppShorucut, &QShortcut::activated,
-            std::bind(&MainWindow::quitAppAction, this, false));
-
-    QShortcut * quitAppShorucut2 = new QShortcut(QKeySequence(Qt::Key_Escape), this);
-    connect(quitAppShorucut2, &QShortcut::activated,
-            std::bind(&MainWindow::quitAppAction, this, false));
-
     QShortcut * prevPictureShorucut = new QShortcut(QKeySequence(Qt::Key_PageUp), this);
     connect(prevPictureShorucut, &QShortcut::activated,
             this, &MainWindow::galleryPrev);
@@ -150,7 +145,13 @@ MainWindow::MainWindow(QWidget *parent) :
     connect(fullscreenShorucut, &QShortcut::activated,
             this, &MainWindow::toggleFullscreen);
 
+    m_am->setupAction(this);
+
     centerWindow();
+
+    QTimer::singleShot(0, this, [this](){
+        m_am->setupShortcuts();
+    });
 }
 
 MainWindow::~MainWindow()
@@ -370,19 +371,29 @@ void MainWindow::mouseDoubleClickEvent(QMouseEvent *event)
 void MainWindow::wheelEvent(QWheelEvent *event)
 {
     QPoint numDegrees = event->angleDelta() / 8;
-    bool needZoom = false, zoomIn = false;
+    bool needWeelEvent = false, wheelUp = false;
+    bool actionIsZoom = event->modifiers().testFlag(Qt::ControlModifier)
+            || Settings::instance()->mouseWheelBehavior() == ActionZoomImage;
 
     // NOTE: Only checking angleDelta since the QWheelEvent::pixelDelta() doc says
     //       pixelDelta() value is driver specific and unreliable on X11...
     //       We are not scrolling the canvas, just zoom in or out, so it probably
     //       doesn't matter here.
     if (!numDegrees.isNull() && numDegrees.y() != 0) {
-        needZoom = true;
+        needWeelEvent = true;
-        zoomIn = numDegrees.y() > 0;
+        wheelUp = numDegrees.y() > 0;
     }
 
-    if (needZoom) {
+    if (needWeelEvent) {
-        m_graphicsView->zoomView(zoomIn ? 1.25 : 0.8);
+        if (actionIsZoom) {
+            m_graphicsView->zoomView(wheelUp ? 1.25 : 0.8);
+        } else {
+            if (wheelUp) {
+                galleryPrev();
+            } else {
+                galleryNext();
+            }
+        }
         event->accept();
     } else {
         FramelessWindow::wheelEvent(event);
@@ -404,97 +415,38 @@ void MainWindow::contextMenuEvent(QContextMenuEvent *event)
     QImage clipboardImage;
     QUrl clipboardFileUrl;
 
-    const QMimeData * clipboardData = QApplication::clipboard()->mimeData();
+    QAction * copyPixmap = m_am->actionCopyPixmap;
-    if (clipboardData->hasImage()) {
+    QAction * copyFilePath = m_am->actionCopyFilePath;
-        QVariant imageVariant(clipboardData->imageData());
-        if (imageVariant.isValid()) {
-            clipboardImage = qvariant_cast<QImage>(imageVariant);
-        }
-    } else if (clipboardData->hasText()) {
-        QString clipboardText(clipboardData->text());
-        if (clipboardText.startsWith("PICTURE:")) {
-            QString maybeFilename(clipboardText.mid(8));
-            if (QFile::exists(maybeFilename)) {
-                clipboardFileUrl = QUrl::fromLocalFile(maybeFilename);
-            }
-        }
-    }
 
-    QAction * copyPixmap = new QAction(tr("Copy P&ixmap"));
-    connect(copyPixmap, &QAction::triggered, this, [ = ](){
-        QClipboard *cb = QApplication::clipboard();
-        cb->setPixmap(m_graphicsView->scene()->renderToPixmap());
-    });
-    QAction * copyFilePath = new QAction(tr("Copy &File Path"));
-    connect(copyFilePath, &QAction::triggered, this, [ = ](){
-        QClipboard *cb = QApplication::clipboard();
-        cb->setText(currentFileUrl.toLocalFile());
-    });
     copyMenu->addAction(copyPixmap);
     if (currentFileUrl.isValid()) {
         copyMenu->addAction(copyFilePath);
     }
 
-    QAction * pasteImage = new QAction(tr("&Paste Image"));
+    QAction * paste = m_am->actionPaste;
-    connect(pasteImage, &QAction::triggered, this, [ = ](){
-        clearGallery();
-        m_graphicsView->showImage(clipboardImage);
-    });
 
-    QAction * pasteImageFile = new QAction(tr("&Paste Image File"));
+    QAction * stayOnTopMode = m_am->actionToggleStayOnTop;
-    connect(pasteImageFile, &QAction::triggered, this, [ = ](){
-        m_graphicsView->showFileFromUrl(clipboardFileUrl, true);
-    });
-
-    QAction * stayOnTopMode = new QAction(tr("Stay on top"));
-    connect(stayOnTopMode, &QAction::triggered, this, [ = ](){
-        toggleStayOnTop();
-    });
     stayOnTopMode->setCheckable(true);
     stayOnTopMode->setChecked(stayOnTop());
 
-    QAction * protectedMode = new QAction(tr("Protected mode"));
+    QAction * protectedMode = m_am->actionToggleProtectMode;
-    connect(protectedMode, &QAction::triggered, this, [ = ](){
-        toggleProtectedMode();
-    });
     protectedMode->setCheckable(true);
     protectedMode->setChecked(m_protectedMode);
 
-    QAction * toggleSettings = new QAction(tr("Configure..."));
+    QAction * toggleSettings = m_am->actionSettings;
-    connect(toggleSettings, &QAction::triggered, this, [ = ](){
+    QAction * helpAction = m_am->actionHelp;
-        SettingsDialog * sd = new SettingsDialog(this);
+    QAction * propertiesAction = m_am->actionProperties;
-        sd->exec();
-        sd->deleteLater();
-    });
-
-    QAction * helpAction = new QAction(tr("Help"));
-    connect(helpAction, &QAction::triggered, this, [ = ](){
-        AboutDialog * ad = new AboutDialog(this);
-        ad->exec();
-        ad->deleteLater();
-    });
-
-    QAction * propertiesAction = new QAction(tr("Properties"));
-    connect(propertiesAction, &QAction::triggered, this, [ = ](){
-        MetadataModel * md = new MetadataModel();
-        md->setFile(currentFileUrl.toLocalFile());
-
-        MetadataDialog * ad = new MetadataDialog(this);
-        ad->setMetadataModel(md);
-        ad->exec();
-        ad->deleteLater();
-    });
 
     if (copyMenu->actions().count() == 1) {
         menu->addActions(copyMenu->actions());
     } else {
         menu->addMenu(copyMenu);
     }
-    if (!clipboardImage.isNull()) {
+
-        menu->addAction(pasteImage);
+    if (canPaste()) {
-    } else if (clipboardFileUrl.isValid()) {
+        menu->addAction(paste);
-        menu->addAction(pasteImageFile);
     }
+
     menu->addSeparator();
     menu->addAction(stayOnTopMode);
     menu->addAction(protectedMode);
@@ -507,6 +459,7 @@ void MainWindow::contextMenuEvent(QContextMenuEvent *event)
     }
     menu->exec(mapToGlobal(event->pos()));
     menu->deleteLater();
+    copyMenu->deleteLater();
 
     return FramelessWindow::contextMenuEvent(event);
 }
@@ -563,6 +516,22 @@ bool MainWindow::stayOnTop()
     return windowFlags().testFlag(Qt::WindowStaysOnTopHint);
 }
 
+bool MainWindow::canPaste()
+{
+    const QMimeData * clipboardData = QApplication::clipboard()->mimeData();
+    if (clipboardData->hasImage()) {
+        return true;
+    } else if (clipboardData->hasText()) {
+        QString clipboardText(clipboardData->text());
+        if (clipboardText.startsWith("PICTURE:")) {
+            QString maybeFilename(clipboardText.mid(8));
+            if (QFile::exists(maybeFilename)) {
+                return true;
+            }
+        }
+    }
+}
+
 void MainWindow::quitAppAction(bool force)
 {
     if (!m_protectedMode || force) {
@@ -592,3 +561,90 @@ QSize MainWindow::sizeHint() const
 {
     return QSize(710, 530);
 }
+
+void MainWindow::on_actionCopyPixmap_triggered()
+{
+    QClipboard *cb = QApplication::clipboard();
+    cb->setPixmap(m_graphicsView->scene()->renderToPixmap());
+}
+
+void MainWindow::on_actionCopyFilePath_triggered()
+{
+    QUrl currentFileUrl(currentImageFileUrl());
+    if (currentFileUrl.isValid()) {
+        QClipboard *cb = QApplication::clipboard();
+        cb->setText(currentFileUrl.toLocalFile());
+    }
+}
+
+void MainWindow::on_actionPaste_triggered()
+{
+    QImage clipboardImage;
+    QUrl clipboardFileUrl;
+
+    const QMimeData * clipboardData = QApplication::clipboard()->mimeData();
+    if (clipboardData->hasImage()) {
+        QVariant imageVariant(clipboardData->imageData());
+        if (imageVariant.isValid()) {
+            clipboardImage = qvariant_cast<QImage>(imageVariant);
+        }
+    } else if (clipboardData->hasText()) {
+        QString clipboardText(clipboardData->text());
+        if (clipboardText.startsWith("PICTURE:")) {
+            QString maybeFilename(clipboardText.mid(8));
+            if (QFile::exists(maybeFilename)) {
+                clipboardFileUrl = QUrl::fromLocalFile(maybeFilename);
+            }
+        }
+    }
+
+    if (!clipboardImage.isNull()) {
+        clearGallery();
+        m_graphicsView->showImage(clipboardImage);
+    } else if (clipboardFileUrl.isValid()) {
+        m_graphicsView->showFileFromUrl(clipboardFileUrl, true);
+    }
+}
+
+void MainWindow::on_actionToggleStayOnTop_triggered()
+{
+    toggleStayOnTop();
+}
+
+void MainWindow::on_actionToggleProtectMode_triggered()
+{
+    toggleProtectedMode();
+}
+
+void MainWindow::on_actionSettings_triggered()
+{
+    SettingsDialog * sd = new SettingsDialog(this);
+    sd->exec();
+    sd->deleteLater();
+}
+
+void MainWindow::on_actionHelp_triggered()
+{
+    AboutDialog * ad = new AboutDialog(this);
+    ad->exec();
+    ad->deleteLater();
+}
+
+void MainWindow::on_actionProperties_triggered()
+{
+    QUrl currentFileUrl = currentImageFileUrl();
+    if (!currentFileUrl.isValid()) return;
+
+    MetadataModel * md = new MetadataModel();
+    md->setFile(currentFileUrl.toLocalFile());
+
+    MetadataDialog * ad = new MetadataDialog(this);
+    ad->setMetadataModel(md);
+    ad->exec();
+    ad->deleteLater();
+}
+
+void MainWindow::on_actionQuitApp_triggered()
+{
+    quitAppAction(false);
+}

app/mainwindow.h

@@ -12,6 +12,7 @@ class QGraphicsOpacityEffect;
 class QGraphicsView;
 QT_END_NAMESPACE
 
+class ActionManager;
 class ToolButton;
 class GraphicsView;
 class NavigatorView;
@@ -55,6 +56,7 @@ protected slots:
     void toggleProtectedMode();
     void toggleStayOnTop();
     bool stayOnTop();
+    bool canPaste();
     void quitAppAction(bool force = false);
     void toggleFullscreen();
     void toggleMaximize();
@@ -62,7 +64,20 @@ protected slots:
 protected:
     QSize sizeHint() const override;
 
+private slots:
+    void on_actionCopyPixmap_triggered();
+    void on_actionCopyFilePath_triggered();
+    void on_actionPaste_triggered();
+    void on_actionToggleStayOnTop_triggered();
+    void on_actionToggleProtectMode_triggered();
+    void on_actionSettings_triggered();
+    void on_actionHelp_triggered();
+    void on_actionProperties_triggered();
+    void on_actionQuitApp_triggered();
+
 private:
+    ActionManager *m_am;
+
     QPoint m_oldMousePos;
     QPropertyAnimation *m_fadeOutAnimation;
     QPropertyAnimation *m_floatUpAnimation;

app/settings.cpp

@@ -28,6 +28,13 @@ DoubleClickBehavior Settings::doubleClickBehavior()
     return stringToDoubleClickBehavior(result);
 }
 
+MouseWheelBehavior Settings::mouseWheelBehavior()
+{
+    QString result = m_qsettings->value("mouse_wheel_behavior", "close").toString().toLower();
+
+    return stringToMouseWheelBehavior(result);
+}
+
 void Settings::setStayOnTop(bool on)
 {
     m_qsettings->setValue("stay_on_top", on);
@@ -40,6 +47,12 @@ void Settings::setDoubleClickBehavior(DoubleClickBehavior dcb)
     m_qsettings->sync();
 }
 
+void Settings::setMouseWheelBehavior(MouseWheelBehavior mwb)
+{
+    m_qsettings->setValue("mouse_wheel_behavior", mouseWheelBehaviorToString(mwb));
+    m_qsettings->sync();
+}
+
 QString Settings::doubleClickBehaviorToString(DoubleClickBehavior dcb)
 {
     static QMap<DoubleClickBehavior, QString> _map {
@@ -51,6 +64,16 @@ QString Settings::doubleClickBehaviorToString(DoubleClickBehavior dcb)
     return _map.value(dcb, "close");
 }
 
+QString Settings::mouseWheelBehaviorToString(MouseWheelBehavior mwb)
+{
+    static QMap<MouseWheelBehavior, QString> _map {
+        {ActionZoomImage, "zoom"},
+        {ActionPrevNextImage, "switch"}
+    };
+
+    return _map.value(mwb, "zoom");
+}
+
 DoubleClickBehavior Settings::stringToDoubleClickBehavior(QString str)
 {
     static QMap<QString, DoubleClickBehavior> _map {
@@ -62,6 +85,16 @@ DoubleClickBehavior Settings::stringToDoubleClickBehavior(QString str)
     return _map.value(str, ActionCloseWindow);
 }
 
+MouseWheelBehavior Settings::stringToMouseWheelBehavior(QString str)
+{
+    static QMap<QString, MouseWheelBehavior> _map {
+        {"zoom", ActionZoomImage},
+        {"switch", ActionPrevNextImage}
+    };
+
+    return _map.value(str, ActionZoomImage);
+}
+
 Settings::Settings()
     : QObject(qApp)
 {

app/settings.h

@@ -8,8 +8,16 @@ enum DoubleClickBehavior {
     ActionCloseWindow,
     ActionMaximizeWindow,
 
-    ActionStart = ActionDoNothing,
+    DCActionStart = ActionDoNothing,
-    ActionEnd = ActionMaximizeWindow
+    DCActionEnd = ActionMaximizeWindow
+};
+
+enum MouseWheelBehavior {
+    ActionZoomImage,
+    ActionPrevNextImage,
+
+    MWActionStart = ActionZoomImage,
+    MWActionEnd = ActionPrevNextImage
 };
 
 class Settings : public QObject
@@ -20,12 +28,16 @@ public:
 
     bool stayOnTop();
     DoubleClickBehavior doubleClickBehavior();
+    MouseWheelBehavior mouseWheelBehavior();
 
     void setStayOnTop(bool on);
     void setDoubleClickBehavior(DoubleClickBehavior dcb);
+    void setMouseWheelBehavior(MouseWheelBehavior mwb);
 
     static QString doubleClickBehaviorToString(DoubleClickBehavior dcb);
+    static QString mouseWheelBehaviorToString(MouseWheelBehavior mwb);
     static DoubleClickBehavior stringToDoubleClickBehavior(QString str);
+    static MouseWheelBehavior stringToMouseWheelBehavior(QString str);
 
 private:
     Settings();

app/settingsdialog.cpp

@@ -11,29 +11,44 @@ SettingsDialog::SettingsDialog(QWidget *parent)
     : QDialog(parent)
     , m_stayOnTop(new QCheckBox)
     , m_doubleClickBehavior(new QComboBox)
+    , m_mouseWheelBehavior(new QComboBox)
 {
     this->setWindowTitle(tr("Settings"));
 
     QFormLayout * settingsForm = new QFormLayout(this);
 
-    static QMap<DoubleClickBehavior, QString> _map {
+    static QMap<DoubleClickBehavior, QString> _dc_map {
         { ActionDoNothing, tr("Do nothing") },
         { ActionCloseWindow, tr("Close the window") },
         { ActionMaximizeWindow, tr("Toggle maximize") }
     };
 
-    QStringList dropDown;
+    static QMap<MouseWheelBehavior, QString> _mw_map {
-    for (int dcb = ActionStart; dcb <= ActionEnd; dcb++) {
+        { ActionZoomImage, tr("Zoom in and out") },
-        dropDown.append(_map.value(static_cast<DoubleClickBehavior>(dcb)));
+        { ActionPrevNextImage, tr("View next or previous item") }
+    };
+
+    QStringList dcbDropDown;
+    for (int dcb = DCActionStart; dcb <= DCActionEnd; dcb++) {
+        dcbDropDown.append(_dc_map.value(static_cast<DoubleClickBehavior>(dcb)));
+    }
+
+    QStringList mwbDropDown;
+    for (int mwb = MWActionStart; mwb <= MWActionEnd; mwb++) {
+        mwbDropDown.append(_mw_map.value(static_cast<MouseWheelBehavior>(mwb)));
     }
 
     settingsForm->addRow(tr("Stay on top when start-up"), m_stayOnTop);
     settingsForm->addRow(tr("Double-click behavior"), m_doubleClickBehavior);
+    settingsForm->addRow(tr("Mouse wheel behavior"), m_mouseWheelBehavior);
 
     m_stayOnTop->setChecked(Settings::instance()->stayOnTop());
-    m_doubleClickBehavior->setModel(new QStringListModel(dropDown));
+    m_doubleClickBehavior->setModel(new QStringListModel(dcbDropDown));
     DoubleClickBehavior dcb = Settings::instance()->doubleClickBehavior();
     m_doubleClickBehavior->setCurrentIndex(static_cast<int>(dcb));
+    m_mouseWheelBehavior->setModel(new QStringListModel(mwbDropDown));
+    MouseWheelBehavior mwb = Settings::instance()->mouseWheelBehavior();
+    m_mouseWheelBehavior->setCurrentIndex(static_cast<int>(mwb));
 
     connect(m_stayOnTop, &QCheckBox::stateChanged, this, [ = ](int state){
         Settings::instance()->setStayOnTop(state == Qt::Checked);
@@ -43,6 +58,10 @@ SettingsDialog::SettingsDialog(QWidget *parent)
         Settings::instance()->setDoubleClickBehavior(static_cast<DoubleClickBehavior>(index));
     });
 
+    connect(m_mouseWheelBehavior, QOverload<int>::of(&QComboBox::currentIndexChanged), this, [ = ](int index){
+        Settings::instance()->setMouseWheelBehavior(static_cast<MouseWheelBehavior>(index));
+    });
+
     this->setMinimumSize(300, 61); // not sure why it complain "Unable to set geometry"
     setWindowFlag(Qt::WindowContextHelpButtonHint, false);
 }

app/settingsdialog.h

@@ -20,6 +20,7 @@ public slots:
 private:
     QCheckBox * m_stayOnTop = nullptr;
     QComboBox * m_doubleClickBehavior = nullptr;
+    QComboBox * m_mouseWheelBehavior = nullptr;
 };
 
 #endif // SETTINGSDIALOG_H

translations/PineapplePictures.ts

@@ -200,62 +200,62 @@
 <context>
     <name>MainWindow</name>
     <message>
-        <location filename="../app/mainwindow.cpp" line="176"/>
+        <location filename="../app/mainwindow.cpp" line="173"/>
         <source>File url list is empty</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="../app/mainwindow.cpp" line="406"/>
+        <location filename="../app/mainwindow.cpp" line="413"/>
         <source>&amp;Copy</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="../app/mainwindow.cpp" line="427"/>
+        <location filename="../app/actionmanager.cpp" line="43"/>
         <source>Copy P&amp;ixmap</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="../app/mainwindow.cpp" line="432"/>
+        <location filename="../app/actionmanager.cpp" line="44"/>
         <source>Copy &amp;File Path</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="../app/mainwindow.cpp" line="442"/>
+        <location filename="../app/actionmanager.cpp" line="50"/>
-        <source>&amp;Paste Image</source>
-        <translation type="unfinished"></translation>
-    </message>
-    <message>
-        <location filename="../app/mainwindow.cpp" line="448"/>
-        <source>&amp;Paste Image File</source>
-        <translation type="unfinished"></translation>
-    </message>
-    <message>
-        <location filename="../app/mainwindow.cpp" line="481"/>
         <source>Properties</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
         <location filename="../app/aboutdialog.cpp" line="31"/>
-        <location filename="../app/mainwindow.cpp" line="453"/>
+        <location filename="../app/actionmanager.cpp" line="46"/>
         <source>Stay on top</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
         <location filename="../app/aboutdialog.cpp" line="35"/>
-        <location filename="../app/mainwindow.cpp" line="460"/>
+        <location filename="../app/actionmanager.cpp" line="47"/>
         <source>Protected mode</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="../app/mainwindow.cpp" line="467"/>
+        <location filename="../app/actionmanager.cpp" line="45"/>
+        <source>&amp;Paste</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../app/actionmanager.cpp" line="48"/>
         <source>Configure...</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="../app/mainwindow.cpp" line="474"/>
+        <location filename="../app/actionmanager.cpp" line="49"/>
         <source>Help</source>
         <translation type="unfinished"></translation>
     </message>
+    <message>
+        <location filename="../app/actionmanager.cpp" line="51"/>
+        <source>Quit</source>
+        <translation type="unfinished"></translation>
+    </message>
 </context>
 <context>
     <name>MetadataDialog</name>
@@ -548,35 +548,50 @@
 <context>
     <name>SettingsDialog</name>
     <message>
-        <location filename="../app/settingsdialog.cpp" line="15"/>
+        <location filename="../app/settingsdialog.cpp" line="16"/>
         <source>Settings</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="../app/settingsdialog.cpp" line="20"/>
+        <location filename="../app/settingsdialog.cpp" line="21"/>
         <source>Do nothing</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="../app/settingsdialog.cpp" line="21"/>
+        <location filename="../app/settingsdialog.cpp" line="22"/>
         <source>Close the window</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="../app/settingsdialog.cpp" line="22"/>
+        <location filename="../app/settingsdialog.cpp" line="23"/>
         <source>Toggle maximize</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="../app/settingsdialog.cpp" line="30"/>
+        <location filename="../app/settingsdialog.cpp" line="27"/>
+        <source>Zoom in and out</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../app/settingsdialog.cpp" line="28"/>
+        <source>View next or previous item</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../app/settingsdialog.cpp" line="41"/>
         <source>Stay on top when start-up</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="../app/settingsdialog.cpp" line="31"/>
+        <location filename="../app/settingsdialog.cpp" line="42"/>
         <source>Double-click behavior</source>
         <translation type="unfinished"></translation>
     </message>
+    <message>
+        <location filename="../app/settingsdialog.cpp" line="43"/>
+        <source>Mouse wheel behavior</source>
+        <translation type="unfinished"></translation>
+    </message>
 </context>
 <context>
     <name>main</name>

translations/PineapplePictures_de.ts

@@ -204,62 +204,70 @@
 <context>
     <name>MainWindow</name>
     <message>
-        <location filename="../app/mainwindow.cpp" line="176"/>
+        <location filename="../app/mainwindow.cpp" line="173"/>
         <source>File url list is empty</source>
         <translation>Die Datei-URL-Liste ist leer</translation>
     </message>
     <message>
-        <location filename="../app/mainwindow.cpp" line="406"/>
+        <location filename="../app/mainwindow.cpp" line="413"/>
         <source>&amp;Copy</source>
         <translation>&amp;Kopieren</translation>
     </message>
     <message>
-        <location filename="../app/mainwindow.cpp" line="427"/>
+        <location filename="../app/actionmanager.cpp" line="43"/>
         <source>Copy P&amp;ixmap</source>
         <translation>P&amp;ixmap kopieren</translation>
     </message>
     <message>
-        <location filename="../app/mainwindow.cpp" line="432"/>
+        <location filename="../app/actionmanager.cpp" line="44"/>
         <source>Copy &amp;File Path</source>
         <translation>&amp;Dateipfad kopieren</translation>
     </message>
     <message>
-        <location filename="../app/mainwindow.cpp" line="442"/>
         <source>&amp;Paste Image</source>
-        <translation>Bild &amp;einfügen</translation>
+        <translation type="vanished">Bild &amp;einfügen</translation>
     </message>
     <message>
-        <location filename="../app/mainwindow.cpp" line="448"/>
         <source>&amp;Paste Image File</source>
-        <translation>Bilddatei &amp;einfügen</translation>
+        <translation type="vanished">Bilddatei &amp;einfügen</translation>
     </message>
     <message>
-        <location filename="../app/mainwindow.cpp" line="481"/>
+        <location filename="../app/actionmanager.cpp" line="50"/>
         <source>Properties</source>
         <translation>Eigenschaften</translation>
     </message>
     <message>
         <location filename="../app/aboutdialog.cpp" line="31"/>
-        <location filename="../app/mainwindow.cpp" line="453"/>
+        <location filename="../app/actionmanager.cpp" line="46"/>
         <source>Stay on top</source>
         <translation>Oben bleiben</translation>
     </message>
     <message>
         <location filename="../app/aboutdialog.cpp" line="35"/>
-        <location filename="../app/mainwindow.cpp" line="460"/>
+        <location filename="../app/actionmanager.cpp" line="47"/>
         <source>Protected mode</source>
         <translation>Geschützter Modus</translation>
     </message>
     <message>
-        <location filename="../app/mainwindow.cpp" line="467"/>
+        <location filename="../app/actionmanager.cpp" line="45"/>
-        <source>Configure...</source>
+        <source>&amp;Paste</source>
-        <translation>Konfigurieren …</translation>
+        <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="../app/mainwindow.cpp" line="474"/>
+        <location filename="../app/actionmanager.cpp" line="48"/>
+        <source>Configure...</source>
+        <translation>Konfigurieren&#xa0;…</translation>
+    </message>
+    <message>
+        <location filename="../app/actionmanager.cpp" line="49"/>
         <source>Help</source>
         <translation>Hilfe</translation>
     </message>
+    <message>
+        <location filename="../app/actionmanager.cpp" line="51"/>
+        <source>Quit</source>
+        <translation type="unfinished"></translation>
+    </message>
 </context>
 <context>
     <name>MetadataDialog</name>
@@ -456,7 +464,7 @@
     <message>
         <location filename="../app/metadatamodel.cpp" line="107"/>
         <source>35mm focal length</source>
-        <translation>35 mm Brennweite</translation>
+        <translation>35&#xa0;mm Brennweite</translation>
     </message>
     <message>
         <location filename="../app/metadatamodel.cpp" line="110"/>
@@ -552,35 +560,50 @@
 <context>
     <name>SettingsDialog</name>
     <message>
-        <location filename="../app/settingsdialog.cpp" line="15"/>
+        <location filename="../app/settingsdialog.cpp" line="16"/>
         <source>Settings</source>
         <translation>Einstellungen</translation>
     </message>
     <message>
-        <location filename="../app/settingsdialog.cpp" line="20"/>
+        <location filename="../app/settingsdialog.cpp" line="21"/>
         <source>Do nothing</source>
         <translation>Nichts tun</translation>
     </message>
     <message>
-        <location filename="../app/settingsdialog.cpp" line="21"/>
+        <location filename="../app/settingsdialog.cpp" line="22"/>
         <source>Close the window</source>
         <translation>Fenster schließen</translation>
     </message>
     <message>
-        <location filename="../app/settingsdialog.cpp" line="22"/>
+        <location filename="../app/settingsdialog.cpp" line="23"/>
         <source>Toggle maximize</source>
         <translation>Maximieren umschalten</translation>
     </message>
     <message>
-        <location filename="../app/settingsdialog.cpp" line="30"/>
+        <location filename="../app/settingsdialog.cpp" line="27"/>
+        <source>Zoom in and out</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../app/settingsdialog.cpp" line="28"/>
+        <source>View next or previous item</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../app/settingsdialog.cpp" line="41"/>
         <source>Stay on top when start-up</source>
         <translation>Beim Start oben bleiben</translation>
     </message>
     <message>
-        <location filename="../app/settingsdialog.cpp" line="31"/>
+        <location filename="../app/settingsdialog.cpp" line="42"/>
         <source>Double-click behavior</source>
         <translation>Doppelklickverhalten</translation>
     </message>
+    <message>
+        <location filename="../app/settingsdialog.cpp" line="43"/>
+        <source>Mouse wheel behavior</source>
+        <translation type="unfinished"></translation>
+    </message>
 </context>
 <context>
     <name>main</name>

translations/PineapplePictures_es.ts

@@ -200,62 +200,62 @@
 <context>
     <name>MainWindow</name>
     <message>
-        <location filename="../app/mainwindow.cpp" line="176"/>
+        <location filename="../app/mainwindow.cpp" line="173"/>
         <source>File url list is empty</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="../app/mainwindow.cpp" line="406"/>
+        <location filename="../app/mainwindow.cpp" line="413"/>
         <source>&amp;Copy</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="../app/mainwindow.cpp" line="427"/>
+        <location filename="../app/actionmanager.cpp" line="43"/>
         <source>Copy P&amp;ixmap</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="../app/mainwindow.cpp" line="432"/>
+        <location filename="../app/actionmanager.cpp" line="44"/>
         <source>Copy &amp;File Path</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="../app/mainwindow.cpp" line="442"/>
+        <location filename="../app/actionmanager.cpp" line="50"/>
-        <source>&amp;Paste Image</source>
-        <translation type="unfinished"></translation>
-    </message>
-    <message>
-        <location filename="../app/mainwindow.cpp" line="448"/>
-        <source>&amp;Paste Image File</source>
-        <translation type="unfinished"></translation>
-    </message>
-    <message>
-        <location filename="../app/mainwindow.cpp" line="481"/>
         <source>Properties</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
         <location filename="../app/aboutdialog.cpp" line="31"/>
-        <location filename="../app/mainwindow.cpp" line="453"/>
+        <location filename="../app/actionmanager.cpp" line="46"/>
         <source>Stay on top</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
         <location filename="../app/aboutdialog.cpp" line="35"/>
-        <location filename="../app/mainwindow.cpp" line="460"/>
+        <location filename="../app/actionmanager.cpp" line="47"/>
         <source>Protected mode</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="../app/mainwindow.cpp" line="467"/>
+        <location filename="../app/actionmanager.cpp" line="45"/>
+        <source>&amp;Paste</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../app/actionmanager.cpp" line="48"/>
         <source>Configure...</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="../app/mainwindow.cpp" line="474"/>
+        <location filename="../app/actionmanager.cpp" line="49"/>
         <source>Help</source>
         <translation type="unfinished"></translation>
     </message>
+    <message>
+        <location filename="../app/actionmanager.cpp" line="51"/>
+        <source>Quit</source>
+        <translation type="unfinished"></translation>
+    </message>
 </context>
 <context>
     <name>MetadataDialog</name>
@@ -548,35 +548,50 @@
 <context>
     <name>SettingsDialog</name>
     <message>
-        <location filename="../app/settingsdialog.cpp" line="15"/>
+        <location filename="../app/settingsdialog.cpp" line="16"/>
         <source>Settings</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="../app/settingsdialog.cpp" line="20"/>
+        <location filename="../app/settingsdialog.cpp" line="21"/>
         <source>Do nothing</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="../app/settingsdialog.cpp" line="21"/>
+        <location filename="../app/settingsdialog.cpp" line="22"/>
         <source>Close the window</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="../app/settingsdialog.cpp" line="22"/>
+        <location filename="../app/settingsdialog.cpp" line="23"/>
         <source>Toggle maximize</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="../app/settingsdialog.cpp" line="30"/>
+        <location filename="../app/settingsdialog.cpp" line="27"/>
+        <source>Zoom in and out</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../app/settingsdialog.cpp" line="28"/>
+        <source>View next or previous item</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../app/settingsdialog.cpp" line="41"/>
         <source>Stay on top when start-up</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="../app/settingsdialog.cpp" line="31"/>
+        <location filename="../app/settingsdialog.cpp" line="42"/>
         <source>Double-click behavior</source>
         <translation type="unfinished"></translation>
     </message>
+    <message>
+        <location filename="../app/settingsdialog.cpp" line="43"/>
+        <source>Mouse wheel behavior</source>
+        <translation type="unfinished"></translation>
+    </message>
 </context>
 <context>
     <name>main</name>

translations/PineapplePictures_fr.ts

@@ -21,7 +21,7 @@
     <message>
         <location filename="../app/aboutdialog.cpp" line="28"/>
         <source>Context menu option explanation:</source>
-        <translation>Explication des options du menu contextuel :</translation>
+        <translation>Explication des options du menu contextuel&#xa0;:</translation>
     </message>
     <message>
         <location filename="../app/aboutdialog.cpp" line="32"/>
@@ -36,7 +36,7 @@
     <message>
         <location filename="../app/aboutdialog.cpp" line="45"/>
         <source>Version: %1</source>
-        <translation>Version : %1</translation>
+        <translation>Version&#xa0;: %1</translation>
     </message>
     <message>
         <location filename="../app/aboutdialog.cpp" line="48"/>
@@ -87,7 +87,7 @@
         <location filename="../app/aboutdialog.cpp" line="115"/>
         <source>%1 is built on the following free software libraries:</source>
         <comment>Free as in freedom</comment>
-        <translation>%1 est basé sur les bibliothèques de logiciels libres suivantes :</translation>
+        <translation>%1 est basé sur les bibliothèques de logiciels libres suivantes&#xa0;:</translation>
     </message>
     <message>
         <location filename="../app/aboutdialog.cpp" line="139"/>
@@ -112,7 +112,7 @@
     <message>
         <location filename="../app/aboutdialog.cpp" line="80"/>
         <source>This license grants people a number of freedoms:</source>
-        <translation>Cette licence accorde aux personnes un certain nombre de libertés :</translation>
+        <translation>Cette licence accorde aux personnes un certain nombre de libertés&#xa0;:</translation>
     </message>
     <message>
         <location filename="../app/aboutdialog.cpp" line="81"/>
@@ -146,7 +146,7 @@
     </message>
     <message>
         <source>%1 is built on the following free software libraries:</source>
-        <translation type="vanished">%1 est basé sur les bibliothèques de logiciels libres suivantes :</translation>
+        <translation type="vanished">%1 est basé sur les bibliothèques de logiciels libres suivantes&#xa0;:</translation>
     </message>
     <message>
         <location filename="../app/aboutdialog.cpp" line="137"/>
@@ -198,68 +198,76 @@
     <message>
         <location filename="../app/graphicsview.cpp" line="269"/>
         <source>Not supported mimedata: %1</source>
-        <translation>Mimedata non pris en charge : %1</translation>
+        <translation>Mimedata non pris en charge&#xa0;: %1</translation>
     </message>
 </context>
 <context>
     <name>MainWindow</name>
     <message>
-        <location filename="../app/mainwindow.cpp" line="176"/>
+        <location filename="../app/mainwindow.cpp" line="173"/>
         <source>File url list is empty</source>
         <translation>La liste des URL de fichiers est vide</translation>
     </message>
     <message>
-        <location filename="../app/mainwindow.cpp" line="406"/>
+        <location filename="../app/mainwindow.cpp" line="413"/>
         <source>&amp;Copy</source>
         <translation>&amp;Copier</translation>
     </message>
     <message>
-        <location filename="../app/mainwindow.cpp" line="427"/>
+        <location filename="../app/actionmanager.cpp" line="43"/>
         <source>Copy P&amp;ixmap</source>
         <translation>Copier P&amp;ixmap</translation>
     </message>
     <message>
-        <location filename="../app/mainwindow.cpp" line="432"/>
+        <location filename="../app/actionmanager.cpp" line="44"/>
         <source>Copy &amp;File Path</source>
         <translation>Copier le &amp;chemin du fichier</translation>
     </message>
     <message>
-        <location filename="../app/mainwindow.cpp" line="442"/>
         <source>&amp;Paste Image</source>
-        <translation>&amp;Coller l&apos;image</translation>
+        <translation type="vanished">&amp;Coller l&apos;image</translation>
     </message>
     <message>
-        <location filename="../app/mainwindow.cpp" line="448"/>
         <source>&amp;Paste Image File</source>
-        <translation>&amp;Coller le fichier d&apos;image</translation>
+        <translation type="vanished">&amp;Coller le fichier d&apos;image</translation>
     </message>
     <message>
-        <location filename="../app/mainwindow.cpp" line="481"/>
+        <location filename="../app/actionmanager.cpp" line="50"/>
         <source>Properties</source>
         <translation>Propriétés</translation>
     </message>
     <message>
         <location filename="../app/aboutdialog.cpp" line="31"/>
-        <location filename="../app/mainwindow.cpp" line="453"/>
+        <location filename="../app/actionmanager.cpp" line="46"/>
         <source>Stay on top</source>
         <translation>Rester en-haut</translation>
     </message>
     <message>
         <location filename="../app/aboutdialog.cpp" line="35"/>
-        <location filename="../app/mainwindow.cpp" line="460"/>
+        <location filename="../app/actionmanager.cpp" line="47"/>
         <source>Protected mode</source>
         <translation>Mode protégé</translation>
     </message>
     <message>
-        <location filename="../app/mainwindow.cpp" line="467"/>
+        <location filename="../app/actionmanager.cpp" line="45"/>
+        <source>&amp;Paste</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../app/actionmanager.cpp" line="48"/>
         <source>Configure...</source>
         <translation>Configurer…</translation>
     </message>
     <message>
-        <location filename="../app/mainwindow.cpp" line="474"/>
+        <location filename="../app/actionmanager.cpp" line="49"/>
         <source>Help</source>
         <translation>Aide</translation>
     </message>
+    <message>
+        <location filename="../app/actionmanager.cpp" line="51"/>
+        <source>Quit</source>
+        <translation type="unfinished"></translation>
+    </message>
 </context>
 <context>
     <name>MetadataDialog</name>
@@ -456,7 +464,7 @@
     <message>
         <location filename="../app/metadatamodel.cpp" line="107"/>
         <source>35mm focal length</source>
-        <translation>Distance focale de 35 mm</translation>
+        <translation>Distance focale de 35&#xa0;mm</translation>
     </message>
     <message>
         <location filename="../app/metadatamodel.cpp" line="110"/>
@@ -552,35 +560,50 @@
 <context>
     <name>SettingsDialog</name>
     <message>
-        <location filename="../app/settingsdialog.cpp" line="15"/>
+        <location filename="../app/settingsdialog.cpp" line="16"/>
         <source>Settings</source>
         <translation>Paramètres</translation>
     </message>
     <message>
-        <location filename="../app/settingsdialog.cpp" line="20"/>
+        <location filename="../app/settingsdialog.cpp" line="21"/>
         <source>Do nothing</source>
         <translation>Ne rien faire</translation>
     </message>
     <message>
-        <location filename="../app/settingsdialog.cpp" line="21"/>
+        <location filename="../app/settingsdialog.cpp" line="22"/>
         <source>Close the window</source>
         <translation>Fermer la fenêtre</translation>
     </message>
     <message>
-        <location filename="../app/settingsdialog.cpp" line="22"/>
+        <location filename="../app/settingsdialog.cpp" line="23"/>
         <source>Toggle maximize</source>
         <translation>Activer/désactiver l&apos;agrandissement</translation>
     </message>
     <message>
-        <location filename="../app/settingsdialog.cpp" line="30"/>
+        <location filename="../app/settingsdialog.cpp" line="27"/>
+        <source>Zoom in and out</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../app/settingsdialog.cpp" line="28"/>
+        <source>View next or previous item</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../app/settingsdialog.cpp" line="41"/>
         <source>Stay on top when start-up</source>
         <translation>Rester en-haut lors du démarrage</translation>
     </message>
     <message>
-        <location filename="../app/settingsdialog.cpp" line="31"/>
+        <location filename="../app/settingsdialog.cpp" line="42"/>
         <source>Double-click behavior</source>
         <translation>Comportement du double-clic</translation>
     </message>
+    <message>
+        <location filename="../app/settingsdialog.cpp" line="43"/>
+        <source>Mouse wheel behavior</source>
+        <translation type="unfinished"></translation>
+    </message>
 </context>
 <context>
     <name>main</name>

translations/PineapplePictures_nb_NO.ts

@@ -204,62 +204,70 @@
 <context>
     <name>MainWindow</name>
     <message>
-        <location filename="../app/mainwindow.cpp" line="176"/>
+        <location filename="../app/mainwindow.cpp" line="173"/>
         <source>File url list is empty</source>
         <translation>Listen over filnettadresser er ugyldig</translation>
     </message>
     <message>
-        <location filename="../app/mainwindow.cpp" line="406"/>
+        <location filename="../app/mainwindow.cpp" line="413"/>
         <source>&amp;Copy</source>
         <translation>&amp;Kopier</translation>
     </message>
     <message>
-        <location filename="../app/mainwindow.cpp" line="427"/>
+        <location filename="../app/actionmanager.cpp" line="43"/>
         <source>Copy P&amp;ixmap</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="../app/mainwindow.cpp" line="432"/>
+        <location filename="../app/actionmanager.cpp" line="44"/>
         <source>Copy &amp;File Path</source>
         <translation>Kopier %filsti</translation>
     </message>
     <message>
-        <location filename="../app/mainwindow.cpp" line="442"/>
         <source>&amp;Paste Image</source>
-        <translation>&amp;Lim inn bilde</translation>
+        <translation type="vanished">&amp;Lim inn bilde</translation>
     </message>
     <message>
-        <location filename="../app/mainwindow.cpp" line="448"/>
         <source>&amp;Paste Image File</source>
-        <translation>&amp;Lim inn bildefil</translation>
+        <translation type="vanished">&amp;Lim inn bildefil</translation>
     </message>
     <message>
-        <location filename="../app/mainwindow.cpp" line="481"/>
+        <location filename="../app/actionmanager.cpp" line="50"/>
         <source>Properties</source>
         <translation>Egenskaper</translation>
     </message>
     <message>
         <location filename="../app/aboutdialog.cpp" line="31"/>
-        <location filename="../app/mainwindow.cpp" line="453"/>
+        <location filename="../app/actionmanager.cpp" line="46"/>
         <source>Stay on top</source>
         <translation>Behold øverst</translation>
     </message>
     <message>
         <location filename="../app/aboutdialog.cpp" line="35"/>
-        <location filename="../app/mainwindow.cpp" line="460"/>
+        <location filename="../app/actionmanager.cpp" line="47"/>
         <source>Protected mode</source>
         <translation>Beskyttet modus</translation>
     </message>
     <message>
-        <location filename="../app/mainwindow.cpp" line="467"/>
+        <location filename="../app/actionmanager.cpp" line="45"/>
+        <source>&amp;Paste</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../app/actionmanager.cpp" line="48"/>
         <source>Configure...</source>
         <translation>Sett opp …</translation>
     </message>
     <message>
-        <location filename="../app/mainwindow.cpp" line="474"/>
+        <location filename="../app/actionmanager.cpp" line="49"/>
         <source>Help</source>
         <translation>Hjelp</translation>
     </message>
+    <message>
+        <location filename="../app/actionmanager.cpp" line="51"/>
+        <source>Quit</source>
+        <translation type="unfinished"></translation>
+    </message>
 </context>
 <context>
     <name>MetadataDialog</name>
@@ -552,35 +560,50 @@
 <context>
     <name>SettingsDialog</name>
     <message>
-        <location filename="../app/settingsdialog.cpp" line="15"/>
+        <location filename="../app/settingsdialog.cpp" line="16"/>
         <source>Settings</source>
         <translation>Innstillinger</translation>
     </message>
     <message>
-        <location filename="../app/settingsdialog.cpp" line="20"/>
+        <location filename="../app/settingsdialog.cpp" line="21"/>
         <source>Do nothing</source>
         <translation>Ikke gjør noe</translation>
     </message>
     <message>
-        <location filename="../app/settingsdialog.cpp" line="21"/>
+        <location filename="../app/settingsdialog.cpp" line="22"/>
         <source>Close the window</source>
         <translation>Lukk vinduet</translation>
     </message>
     <message>
-        <location filename="../app/settingsdialog.cpp" line="22"/>
+        <location filename="../app/settingsdialog.cpp" line="23"/>
         <source>Toggle maximize</source>
         <translation>Veksle maksimering</translation>
     </message>
     <message>
-        <location filename="../app/settingsdialog.cpp" line="30"/>
+        <location filename="../app/settingsdialog.cpp" line="27"/>
+        <source>Zoom in and out</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../app/settingsdialog.cpp" line="28"/>
+        <source>View next or previous item</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../app/settingsdialog.cpp" line="41"/>
         <source>Stay on top when start-up</source>
         <translation>Behold i forgrunnen ved oppstart</translation>
     </message>
     <message>
-        <location filename="../app/settingsdialog.cpp" line="31"/>
+        <location filename="../app/settingsdialog.cpp" line="42"/>
         <source>Double-click behavior</source>
         <translation>Dobbeltklikksoppførsel</translation>
     </message>
+    <message>
+        <location filename="../app/settingsdialog.cpp" line="43"/>
+        <source>Mouse wheel behavior</source>
+        <translation type="unfinished"></translation>
+    </message>
 </context>
 <context>
     <name>main</name>

translations/PineapplePictures_ru.ts

@@ -200,62 +200,70 @@
 <context>
     <name>MainWindow</name>
     <message>
-        <location filename="../app/mainwindow.cpp" line="176"/>
+        <location filename="../app/mainwindow.cpp" line="173"/>
         <source>File url list is empty</source>
         <translation>Список URL-адресов файлов пуст</translation>
     </message>
     <message>
-        <location filename="../app/mainwindow.cpp" line="406"/>
+        <location filename="../app/mainwindow.cpp" line="413"/>
         <source>&amp;Copy</source>
         <translation>&amp;Копировать</translation>
     </message>
     <message>
-        <location filename="../app/mainwindow.cpp" line="427"/>
+        <location filename="../app/actionmanager.cpp" line="43"/>
         <source>Copy P&amp;ixmap</source>
         <translation>Копировать P&amp;ixmap</translation>
     </message>
     <message>
-        <location filename="../app/mainwindow.cpp" line="432"/>
+        <location filename="../app/actionmanager.cpp" line="44"/>
         <source>Copy &amp;File Path</source>
         <translation>Копировать &amp;путь к файлу</translation>
     </message>
     <message>
-        <location filename="../app/mainwindow.cpp" line="442"/>
         <source>&amp;Paste Image</source>
-        <translation>&amp;Вставить изображение</translation>
+        <translation type="vanished">&amp;Вставить изображение</translation>
     </message>
     <message>
-        <location filename="../app/mainwindow.cpp" line="448"/>
         <source>&amp;Paste Image File</source>
-        <translation>&amp;Вставить файл изображения</translation>
+        <translation type="vanished">&amp;Вставить файл изображения</translation>
     </message>
     <message>
-        <location filename="../app/mainwindow.cpp" line="481"/>
+        <location filename="../app/actionmanager.cpp" line="50"/>
         <source>Properties</source>
         <translation>Свойства</translation>
     </message>
     <message>
         <location filename="../app/aboutdialog.cpp" line="31"/>
-        <location filename="../app/mainwindow.cpp" line="453"/>
+        <location filename="../app/actionmanager.cpp" line="46"/>
         <source>Stay on top</source>
         <translation>Поверх всех окон</translation>
     </message>
     <message>
         <location filename="../app/aboutdialog.cpp" line="35"/>
-        <location filename="../app/mainwindow.cpp" line="460"/>
+        <location filename="../app/actionmanager.cpp" line="47"/>
         <source>Protected mode</source>
         <translation>Защищённый режим</translation>
     </message>
     <message>
-        <location filename="../app/mainwindow.cpp" line="467"/>
+        <location filename="../app/actionmanager.cpp" line="45"/>
+        <source>&amp;Paste</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../app/actionmanager.cpp" line="48"/>
         <source>Configure...</source>
         <translation>Настроить...</translation>
     </message>
     <message>
-        <location filename="../app/mainwindow.cpp" line="474"/>
+        <location filename="../app/actionmanager.cpp" line="49"/>
         <source>Help</source>
         <translation>Помощь</translation>
     </message>
+    <message>
+        <location filename="../app/actionmanager.cpp" line="51"/>
+        <source>Quit</source>
+        <translation type="unfinished"></translation>
+    </message>
 </context>
 <context>
     <name>MetadataDialog</name>
@@ -548,35 +556,50 @@
 <context>
     <name>SettingsDialog</name>
     <message>
-        <location filename="../app/settingsdialog.cpp" line="15"/>
+        <location filename="../app/settingsdialog.cpp" line="16"/>
         <source>Settings</source>
         <translation>Настройки</translation>
     </message>
     <message>
-        <location filename="../app/settingsdialog.cpp" line="20"/>
+        <location filename="../app/settingsdialog.cpp" line="21"/>
         <source>Do nothing</source>
         <translation>Ничего не делать</translation>
     </message>
     <message>
-        <location filename="../app/settingsdialog.cpp" line="21"/>
+        <location filename="../app/settingsdialog.cpp" line="22"/>
         <source>Close the window</source>
         <translation>Закрыть окно</translation>
     </message>
     <message>
-        <location filename="../app/settingsdialog.cpp" line="22"/>
+        <location filename="../app/settingsdialog.cpp" line="23"/>
         <source>Toggle maximize</source>
         <translation>Развернуть окно</translation>
     </message>
     <message>
-        <location filename="../app/settingsdialog.cpp" line="30"/>
+        <location filename="../app/settingsdialog.cpp" line="27"/>
+        <source>Zoom in and out</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../app/settingsdialog.cpp" line="28"/>
+        <source>View next or previous item</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../app/settingsdialog.cpp" line="41"/>
         <source>Stay on top when start-up</source>
         <translation>Поверх всех окон при запуске</translation>
     </message>
     <message>
-        <location filename="../app/settingsdialog.cpp" line="31"/>
+        <location filename="../app/settingsdialog.cpp" line="42"/>
         <source>Double-click behavior</source>
         <translation>Поведение при двойном щелчке</translation>
     </message>
+    <message>
+        <location filename="../app/settingsdialog.cpp" line="43"/>
+        <source>Mouse wheel behavior</source>
+        <translation type="unfinished"></translation>
+    </message>
 </context>
 <context>
     <name>main</name>

translations/PineapplePictures_zh_CN.ts

@@ -204,62 +204,70 @@
 <context>
     <name>MainWindow</name>
     <message>
-        <location filename="../app/mainwindow.cpp" line="176"/>
+        <location filename="../app/mainwindow.cpp" line="173"/>
         <source>File url list is empty</source>
         <translation>文件 URL 列表为空</translation>
     </message>
     <message>
-        <location filename="../app/mainwindow.cpp" line="406"/>
+        <location filename="../app/mainwindow.cpp" line="413"/>
         <source>&amp;Copy</source>
         <translation>复制(&amp;C)</translation>
     </message>
     <message>
-        <location filename="../app/mainwindow.cpp" line="427"/>
+        <location filename="../app/actionmanager.cpp" line="43"/>
         <source>Copy P&amp;ixmap</source>
         <translation>复制位图(&amp;I)</translation>
     </message>
     <message>
-        <location filename="../app/mainwindow.cpp" line="432"/>
+        <location filename="../app/actionmanager.cpp" line="44"/>
         <source>Copy &amp;File Path</source>
         <translation>复制文件路径(&amp;F)</translation>
     </message>
     <message>
-        <location filename="../app/mainwindow.cpp" line="442"/>
         <source>&amp;Paste Image</source>
-        <translation>粘贴图像(&amp;P)</translation>
+        <translation type="vanished">粘贴图像(&amp;P)</translation>
     </message>
     <message>
-        <location filename="../app/mainwindow.cpp" line="448"/>
         <source>&amp;Paste Image File</source>
-        <translation>粘贴图像文件(&amp;P)</translation>
+        <translation type="vanished">粘贴图像文件(&amp;P)</translation>
     </message>
     <message>
-        <location filename="../app/mainwindow.cpp" line="481"/>
+        <location filename="../app/actionmanager.cpp" line="50"/>
         <source>Properties</source>
         <translation>属性</translation>
     </message>
     <message>
         <location filename="../app/aboutdialog.cpp" line="31"/>
-        <location filename="../app/mainwindow.cpp" line="453"/>
+        <location filename="../app/actionmanager.cpp" line="46"/>
         <source>Stay on top</source>
         <translation>总在最前</translation>
     </message>
     <message>
         <location filename="../app/aboutdialog.cpp" line="35"/>
-        <location filename="../app/mainwindow.cpp" line="460"/>
+        <location filename="../app/actionmanager.cpp" line="47"/>
         <source>Protected mode</source>
         <translation>保护模式</translation>
     </message>
     <message>
-        <location filename="../app/mainwindow.cpp" line="467"/>
+        <location filename="../app/actionmanager.cpp" line="45"/>
+        <source>&amp;Paste</source>
+        <translation>粘贴(&amp;P)</translation>
+    </message>
+    <message>
+        <location filename="../app/actionmanager.cpp" line="48"/>
         <source>Configure...</source>
         <translation>设置...</translation>
     </message>
     <message>
-        <location filename="../app/mainwindow.cpp" line="474"/>
+        <location filename="../app/actionmanager.cpp" line="49"/>
         <source>Help</source>
         <translation>帮助</translation>
     </message>
+    <message>
+        <location filename="../app/actionmanager.cpp" line="51"/>
+        <source>Quit</source>
+        <translation>退出</translation>
+    </message>
 </context>
 <context>
     <name>MetadataDialog</name>
@@ -552,35 +560,50 @@
 <context>
     <name>SettingsDialog</name>
     <message>
-        <location filename="../app/settingsdialog.cpp" line="15"/>
+        <location filename="../app/settingsdialog.cpp" line="16"/>
         <source>Settings</source>
         <translation>设定</translation>
     </message>
     <message>
-        <location filename="../app/settingsdialog.cpp" line="20"/>
+        <location filename="../app/settingsdialog.cpp" line="21"/>
         <source>Do nothing</source>
         <translation>什么也不做</translation>
     </message>
     <message>
-        <location filename="../app/settingsdialog.cpp" line="21"/>
+        <location filename="../app/settingsdialog.cpp" line="22"/>
         <source>Close the window</source>
         <translation>关闭窗口</translation>
     </message>
     <message>
-        <location filename="../app/settingsdialog.cpp" line="22"/>
+        <location filename="../app/settingsdialog.cpp" line="23"/>
         <source>Toggle maximize</source>
         <translation>最大化窗口</translation>
     </message>
     <message>
-        <location filename="../app/settingsdialog.cpp" line="30"/>
+        <location filename="../app/settingsdialog.cpp" line="27"/>
+        <source>Zoom in and out</source>
+        <translation>放大和缩小</translation>
+    </message>
+    <message>
+        <location filename="../app/settingsdialog.cpp" line="28"/>
+        <source>View next or previous item</source>
+        <translation>查看下一项或上一项</translation>
+    </message>
+    <message>
+        <location filename="../app/settingsdialog.cpp" line="41"/>
         <source>Stay on top when start-up</source>
         <translation>启动时保持窗口总在最前</translation>
     </message>
     <message>
-        <location filename="../app/settingsdialog.cpp" line="31"/>
+        <location filename="../app/settingsdialog.cpp" line="42"/>
         <source>Double-click behavior</source>
         <translation>双击时的行为</translation>
     </message>
+    <message>
+        <location filename="../app/settingsdialog.cpp" line="43"/>
+        <source>Mouse wheel behavior</source>
+        <translation>鼠标滚轮行为</translation>
+    </message>
 </context>
 <context>
     <name>main</name>