Client decorations: Show menu on right click

[ChangeLog][QPA plugin] A window menu is now shown when the window decorations
are right-clicked (if supported by the compositor).

Change-Id: I13bf0c8cd91a6e5a3b44e47114dfdc2ff0e97f3a
Reviewed-by: Paul Olav Tvete <paul.tvete@qt.io>
Reviewed-by: Pier Luigi Fiorini <pierluigi.fiorini@liri.io>

src/plugins/platforms/wayland/plugins/decorations/bradient/main.cpp

@@ -333,6 +333,8 @@ void QWaylandBradientDecoration::processMouseTop(QWaylandInputDevice *inputDevic
         processMouseLeft(inputDevice, local, b, mods);
     } else if (local.x() > window()->width() + margins().left()) {
         processMouseRight(inputDevice, local, b, mods);
+    } else if (isRightClicked(b)) {
+        showWindowMenu(inputDevice);
     } else if (closeButtonRect().contains(local)) {
         if (clickButton(b, Close))
             QWindowSystemInterface::handleCloseEvent(window());

src/plugins/platforms/wayland/plugins/shellintegration/xdg-shell-v5/qwaylandxdgsurfacev5.cpp

@@ -95,6 +95,13 @@ bool QWaylandXdgSurfaceV5::move(QWaylandInputDevice *inputDevice)
     return true;
 }
 
+bool QWaylandXdgSurfaceV5::showWindowMenu(QWaylandInputDevice *seat)
+{
+    QPoint position = seat->pointerSurfacePosition().toPoint();
+    show_window_menu(seat->wl_seat(), seat->serial(), position.x(), position.y());
+    return true;
+}
+
 void QWaylandXdgSurfaceV5::updateTransientParent(QWaylandWindow *parent)
 {
     if (!parent)

src/plugins/platforms/wayland/plugins/shellintegration/xdg-shell-v5/qwaylandxdgsurfacev5_p.h

@@ -84,6 +84,7 @@ public:
 
     using QtWayland::xdg_surface_v5::move;
     bool move(QWaylandInputDevice *inputDevice) override;
+    bool showWindowMenu(QWaylandInputDevice *seat) override;
 
     void setTitle(const QString &title) override;
     void setAppId(const QString &appId) override;

src/plugins/platforms/wayland/plugins/shellintegration/xdg-shell-v6/qwaylandxdgshellv6.cpp

@@ -251,6 +251,16 @@ bool QWaylandXdgSurfaceV6::move(QWaylandInputDevice *inputDevice)
     return false;
 }
 
+bool QWaylandXdgSurfaceV6::showWindowMenu(QWaylandInputDevice *seat)
+{
+    if (m_toplevel && m_toplevel->isInitialized()) {
+        QPoint position = seat->pointerSurfacePosition().toPoint();
+        m_toplevel->show_window_menu(seat->wl_seat(), seat->serial(), position.x(), position.y());
+        return true;
+    }
+    return false;
+}
+
 void QWaylandXdgSurfaceV6::setTitle(const QString &title)
 {
     if (m_toplevel)

src/plugins/platforms/wayland/plugins/shellintegration/xdg-shell-v6/qwaylandxdgshellv6_p.h

@@ -79,6 +79,7 @@ public:
 
     void resize(QWaylandInputDevice *inputDevice, Qt::Edges edges) override;
     bool move(QWaylandInputDevice *inputDevice) override;
+    bool showWindowMenu(QWaylandInputDevice *seat) override;
     void setTitle(const QString &title) override;
     void setAppId(const QString &appId) override;
 

src/plugins/platforms/wayland/plugins/shellintegration/xdg-shell/qwaylandxdgshell.cpp

@@ -279,6 +279,16 @@ bool QWaylandXdgSurface::move(QWaylandInputDevice *inputDevice)
     return false;
 }
 
+bool QWaylandXdgSurface::showWindowMenu(QWaylandInputDevice *seat)
+{
+    if (m_toplevel && m_toplevel->isInitialized()) {
+        QPoint position = seat->pointerSurfacePosition().toPoint();
+        m_toplevel->show_window_menu(seat->wl_seat(), seat->serial(), position.x(), position.y());
+        return true;
+    }
+    return false;
+}
+
 void QWaylandXdgSurface::setTitle(const QString &title)
 {
     if (m_toplevel)

src/plugins/platforms/wayland/plugins/shellintegration/xdg-shell/qwaylandxdgshell_p.h

@@ -82,6 +82,7 @@ public:
 
     void resize(QWaylandInputDevice *inputDevice, Qt::Edges edges) override;
     bool move(QWaylandInputDevice *inputDevice) override;
+    bool showWindowMenu(QWaylandInputDevice *seat) override;
     void setTitle(const QString &title) override;
     void setAppId(const QString &appId) override;
     void setWindowFlags(Qt::WindowFlags flags) override;

src/plugins/platforms/wayland/qwaylandabstractdecoration.cpp

@@ -164,20 +164,29 @@ void QWaylandAbstractDecoration::startMove(QWaylandInputDevice *inputDevice, Qt:
     }
 }
 
+void QWaylandAbstractDecoration::showWindowMenu(QWaylandInputDevice *inputDevice)
+{
+    Q_D(QWaylandAbstractDecoration);
+    if (auto *s = d->m_wayland_window->shellSurface())
+        s->showWindowMenu(inputDevice);
+}
+
 bool QWaylandAbstractDecoration::isLeftClicked(Qt::MouseButtons newMouseButtonState)
 {
     Q_D(QWaylandAbstractDecoration);
-    if (!(d->m_mouseButtons & Qt::LeftButton) && (newMouseButtonState & Qt::LeftButton))
+    return !(d->m_mouseButtons & Qt::LeftButton) && (newMouseButtonState & Qt::LeftButton);
-        return true;
+}
-    return false;
+
+bool QWaylandAbstractDecoration::isRightClicked(Qt::MouseButtons newMouseButtonState)
+{
+    Q_D(QWaylandAbstractDecoration);
+    return !(d->m_mouseButtons & Qt::RightButton) && (newMouseButtonState & Qt::RightButton);
 }
 
 bool QWaylandAbstractDecoration::isLeftReleased(Qt::MouseButtons newMouseButtonState)
 {
     Q_D(QWaylandAbstractDecoration);
-    if ((d->m_mouseButtons & Qt::LeftButton) && !(newMouseButtonState & Qt::LeftButton))
+    return (d->m_mouseButtons & Qt::LeftButton) && !(newMouseButtonState & Qt::LeftButton);
-        return true;
-    return false;
 }
 
 bool QWaylandAbstractDecoration::isDirty() const

src/plugins/platforms/wayland/qwaylandabstractdecoration_p.h

@@ -105,8 +105,10 @@ protected:
 
     void startResize(QWaylandInputDevice *inputDevice, Qt::Edges edges, Qt::MouseButtons buttons);
     void startMove(QWaylandInputDevice *inputDevice, Qt::MouseButtons buttons);
+    void showWindowMenu(QWaylandInputDevice *inputDevice);
 
     bool isLeftClicked(Qt::MouseButtons newMouseButtonState);
+    bool isRightClicked(Qt::MouseButtons newMouseButtonState);
     bool isLeftReleased(Qt::MouseButtons newMouseButtonState);
 };
 

src/plugins/platforms/wayland/qwaylandinputdevice.cpp

@@ -331,6 +331,11 @@ QWaylandWindow *QWaylandInputDevice::touchFocus() const
     return mTouch ? mTouch->mFocus : nullptr;
 }
 
+QPointF QWaylandInputDevice::pointerSurfacePosition() const
+{
+    return mPointer ? mPointer->mSurfacePos : QPointF();
+}
+
 Qt::KeyboardModifiers QWaylandInputDevice::modifiers() const
 {
     if (!mKeyboard)

src/plugins/platforms/wayland/qwaylandinputdevice_p.h

@@ -129,6 +129,8 @@ public:
     QWaylandWindow *keyboardFocus() const;
     QWaylandWindow *touchFocus() const;
 
+    QPointF pointerSurfacePosition() const;
+
     Qt::KeyboardModifiers modifiers() const;
 
     uint32_t serial() const;

src/plugins/platforms/wayland/qwaylandshellsurface_p.h

@@ -76,6 +76,7 @@ public:
     virtual void resize(QWaylandInputDevice * /*inputDevice*/, Qt::Edges /*edges*/) {}
 
     virtual bool move(QWaylandInputDevice *) { return false; }
+    virtual bool showWindowMenu(QWaylandInputDevice *seat) { Q_UNUSED(seat); return false; }
     virtual void setTitle(const QString & /*title*/) {}
     virtual void setAppId(const QString & /*appId*/) {}