expose a WindowType api to Desktop.qml

shell/desktopview.cpp

@@ -35,9 +35,8 @@
 DesktopView::DesktopView(ShellCorona *corona)
     : PlasmaQuick::View(corona, 0),
       m_corona(corona),
-      m_stayBehind(false),
-      m_fillScreen(false),
-      m_dashboardShown(false)
+      m_dashboardShown(false),
+      m_windowType(Desktop)
 {
     setTitle(i18n("Desktop"));
     setIcon(QIcon::fromTheme("user-desktop"));
@@ -45,7 +44,7 @@ DesktopView::DesktopView(ShellCorona *corona)
     setSource(QUrl::fromLocalFile(corona->package().filePath("views", "Desktop.qml")));
 
     //For some reason, if I connect the method directly it doesn't get called, I think it's for the lack of argument
-    connect(this, &QWindow::screenChanged, this, [=](QScreen*) { adaptToScreen(); ensureStayBehind(); });
+    connect(this, &QWindow::screenChanged, this, [=](QScreen*) { adaptToScreen(); ensureWindowType(); });
 
     QObject::connect(corona, &Plasma::Corona::packageChanged,
                      this, &DesktopView::coronaPackageChanged);
@@ -65,39 +64,6 @@ DesktopView::~DesktopView()
 {
 }
 
-bool DesktopView::stayBehind() const
-{
-    return m_stayBehind;
-}
-
-void DesktopView::setStayBehind(bool stayBehind)
-{
-    if (ShellManager::s_forceWindowed || stayBehind == m_stayBehind) {
-        return;
-    }
-
-    m_stayBehind = stayBehind;
-    ensureStayBehind();
-
-    emit stayBehindChanged();
-}
-
-bool DesktopView::fillScreen() const
-{
-    return m_fillScreen;
-}
-
-void DesktopView::setFillScreen(bool fillScreen)
-{
-    if (ShellManager::s_forceWindowed || fillScreen == m_fillScreen) {
-        return;
-    }
-
-    m_fillScreen = fillScreen;
-    adaptToScreen();
-    emit fillScreenChanged();
-}
-
 void DesktopView::showEvent(QShowEvent* e)
 {
     adaptToScreen();
@@ -112,7 +78,7 @@ void DesktopView::adaptToScreen()
     }
 
 //     qDebug() << "adapting to screen" << screen()->name() << this;
-    if (m_fillScreen) {
+    if (m_windowType != Normal && !ShellManager::s_forceWindowed) {
         setGeometry(screen()->geometry());
         setMinimumSize(screen()->geometry().size());
         setMaximumSize(screen()->geometry().size());
@@ -126,22 +92,47 @@ void DesktopView::adaptToScreen()
     m_oldScreen = screen();
 }
 
-void DesktopView::ensureStayBehind()
+DesktopView::WindowType DesktopView::windowType() const
+{
+    return m_windowType;
+}
+
+void DesktopView::setWindowType(DesktopView::WindowType type)
+{
+    if (m_windowType == type) {
+        return;
+    }
+
+    m_windowType = type;
+
+    ensureWindowType();
+    adaptToScreen();
+
+    emit windowTypeChanged();
+}
+
+void DesktopView::ensureWindowType()
 {
     //This happens sometimes, when shutting down the process
-    if (!screen())
+    if (!screen()) {
         return;
-    if (m_stayBehind) {
+    }
+
+    if (m_windowType == Normal || ShellManager::s_forceWindowed) {
+        KWindowSystem::setType(winId(), NET::Normal);
+        KWindowSystem::clearState(winId(), NET::FullScreen);
+    } else if (m_windowType == Desktop) {
         KWindowSystem::setType(winId(), NET::Desktop);
-    } else {
+    } else if (m_windowType == FullScreen) {
         KWindowSystem::setType(winId(), NET::Normal);
+        KWindowSystem::setState(winId(), NET::FullScreen);
     }
 }
 
 void DesktopView::setDashboardShown(bool shown)
 {
     if (shown) {
-        if (m_stayBehind) {
+        if (m_windowType == Desktop) {
             KWindowSystem::setType(winId(), NET::Normal);
             KWindowSystem::clearState(winId(), NET::KeepBelow);
             KWindowSystem::setState(winId(), NET::SkipTaskbar|NET::SkipPager);
@@ -153,7 +144,7 @@ void DesktopView::setDashboardShown(bool shown)
         KWindowSystem::forceActiveWindow(winId());
 
     } else {
-        if (m_stayBehind) {
+        if (m_windowType == Desktop) {
             KWindowSystem::setType(winId(), NET::Desktop);
             KWindowSystem::setState(winId(), NET::SkipTaskbar|NET::SkipPager|NET::KeepBelow);
         }
@@ -173,6 +164,8 @@ bool DesktopView::event(QEvent *e)
         if (m_dashboardShown && ke->key() == Qt::Key_Escape) {
             static_cast<ShellCorona *>(corona())->setDashboardShown(false);
         }
+    } else if (e->type() == QEvent::Show || e->type() == QEvent::FocusIn) {
+        ensureWindowType();
     } else if (e->type() == QEvent::Close) {
         //prevent ALT+F4 from killing the shell
         e->ignore();

shell/desktopview.h

@@ -29,27 +29,31 @@ class ShellCorona;
 class DesktopView : public PlasmaQuick::View
 {
     Q_OBJECT
-    Q_PROPERTY(bool stayBehind READ stayBehind WRITE setStayBehind NOTIFY stayBehindChanged)
-    Q_PROPERTY(bool fillScreen READ fillScreen WRITE setFillScreen NOTIFY fillScreenChanged)
     //the qml part doesn't need to be able to write it, hide for now
     Q_PROPERTY(bool dashboardShown READ isDashboardShown NOTIFY dashboardShownChanged)
 
+    Q_PROPERTY(WindowType windowType READ windowType WRITE setWindowType NOTIFY windowTypeChanged)
+
 public:
+    enum WindowType {
+        Normal,
+        Desktop,
+        FullScreen
+    };
+    Q_ENUMS(WindowType)
+
     explicit DesktopView(ShellCorona *corona);
     virtual ~DesktopView();
 
-    bool stayBehind() const;
-    void setStayBehind(bool stayBehind);
-
-    bool fillScreen() const;
-    void setFillScreen(bool fillScreen);
-
     void setDashboardShown(bool shown);
     bool isDashboardShown() const;
 
     void adaptToScreen();
     virtual void showEvent(QShowEvent*);
 
+    WindowType windowType() const;
+    void setWindowType(WindowType type);
+
 protected:
     bool event(QEvent *e);
     void keyPressEvent(QKeyEvent *e);
@@ -65,17 +69,17 @@ Q_SIGNALS:
     void stayBehindChanged();
     void fillScreenChanged();
     void dashboardShownChanged();
+    void windowTypeChanged();
 
 private:
     void coronaPackageChanged(const Plasma::Package &package);
-    void ensureStayBehind();
+    void ensureWindowType();
 
     QPointer<PlasmaQuick::ConfigView> m_configView;
     QPointer<QScreen> m_oldScreen;
     ShellCorona *m_corona;
-    bool m_stayBehind : 1;
-    bool m_fillScreen : 1;
     bool m_dashboardShown : 1;
+    WindowType m_windowType;
 };
 
 #endif // DESKTOVIEW_H

shell/shellcorona.cpp

@@ -77,6 +77,7 @@ ShellCorona::ShellCorona(QObject *parent)
       m_screenConfiguration(nullptr),
       m_loading(false)
 {
+    qmlRegisterUncreatableType<DesktopView>("org.kde.plasma.shell", 2, 0, "DesktopView", "It is not possible to create objects of type DesktopView");
     m_lookAndFeelPackage = Plasma::PluginLoader::self()->loadPackage("Plasma/LookAndFeel");
     KConfigGroup cg(KSharedConfig::openConfig("kdeglobals"), "KDE");
     const QString packageName = cg.readEntry("LookAndFeelPackage", QString());