[kcmkwin/deco] Reconfigure deco after applying changes

Required hooks also added to KWin core and Aurorae.

clients/aurorae/src/aurorae.cpp

@@ -277,6 +277,7 @@ void Decoration::init()
 {
     KDecoration2::Decoration::init();
     auto s = settings();
+    connect(s.data(), &KDecoration2::DecorationSettings::reconfigured, this, &Decoration::configChanged);
     // recreate scene when compositing gets disabled, TODO: remove with rendercontrol
 #if !HAVE_RENDER_CONTROL
     if (!m_recreateNonCompositedConnection) {
@@ -713,46 +714,13 @@ void ConfigurationModule::init()
     uiFile.close();
     layout()->addWidget(customConfigForm);
     // connect the ui file with the skeleton
-    m_configManager = new KConfigDialogManager(customConfigForm, m_skeleton);
+    addConfig(m_skeleton, customConfigForm);
-    m_configManager->updateWidgets();
-    connect(m_configManager, &KConfigDialogManager::widgetModified,
-            this, static_cast<void (ConfigurationModule::*)()>(&KCModule::changed));
 
     // send a custom event to the translator to retranslate using our translator
     QEvent le(QEvent::LanguageChange);
     QCoreApplication::sendEvent(customConfigForm, &le);
 }
 
-void ConfigurationModule::defaults()
-{
-    if (m_configManager) {
-        m_configManager->updateWidgetsDefault();
-    }
-    KCModule::defaults();
-}
-
-void ConfigurationModule::load()
-{
-    if (m_skeleton) {
-        m_skeleton->load();
-    }
-    if (m_configManager) {
-        m_configManager->updateWidgets();
-    }
-    KCModule::load();
-}
-
-void ConfigurationModule::save()
-{
-    if (m_configManager) {
-        m_configManager->updateSettings();
-    }
-    if (m_skeleton) {
-        m_skeleton->save();
-    }
-    KCModule::save();
-}
-
 }
 
 #include "aurorae.moc"

clients/aurorae/src/aurorae.h

@@ -34,7 +34,6 @@ class QQuickWindow;
 class QWindow;
 
 class KConfigLoader;
-class KConfigDialogManager;
 
 namespace KWin
 {
@@ -62,6 +61,9 @@ public Q_SLOTS:
     void init() override;
     void installTitleItem(QQuickItem *item);
 
+Q_SIGNALS:
+    void configChanged();
+
 protected:
     void hoverEnterEvent(QHoverEvent *event) override;
     void hoverLeaveEvent(QHoverEvent *event) override;
@@ -119,16 +121,10 @@ class ConfigurationModule : public KCModule
 public:
     ConfigurationModule(QWidget *parent, const QVariantList &args);
 
-public Q_SLOTS:
-    void defaults() override;
-    void load() override;
-    void save() override;
-
 private:
     void init();
     QString m_theme;
     KConfigLoader *m_skeleton = nullptr;
-    KConfigDialogManager *m_configManager = nullptr;
 };
 
 }

clients/aurorae/themes/plastik/package/contents/ui/main.qml

@@ -413,4 +413,8 @@ Decoration {
         maximizedBorders.setTitle(top.maximizedHeight);
         readConfig();
     }
+    Connections {
+        target: decoration
+        onConfigChanged: root.readConfig()
+    }
 }

decorations/settings.cpp

@@ -180,6 +180,8 @@ void SettingsImpl::readSettings()
         m_borderSize = size;
         emit decorationSettings()->borderSizeChanged(m_borderSize);
     }
+
+    emit decorationSettings()->reconfigured();
 }
 
 }

kcmkwin/kwindecoration/declarative-plugin/CMakeLists.txt

@@ -11,6 +11,7 @@ add_library(kdecorationprivatedeclarative SHARED ${plugin_SRCS})
 target_link_libraries(kdecorationprivatedeclarative
     KDecoration2::KDecoration
     KDecoration2::KDecoration2Private
+    Qt5::DBus
     Qt5::Quick
     KF5::CoreAddons
     KF5::ConfigWidgets

kcmkwin/kwindecoration/declarative-plugin/previewbridge.cpp

@@ -31,6 +31,8 @@
 #include <KPluginTrader>
 
 #include <QDebug>
+#include <QDBusConnection>
+#include <QDBusMessage>
 #include <QDialog>
 #include <QDialogButtonBox>
 #include <QPushButton>
@@ -195,7 +197,18 @@ void PreviewBridge::configure()
         return;
     }
 
-    connect(&dialog, &QDialog::accepted, kcm, &KCModule::save);
+    auto save = [this,kcm] {
+        kcm->save();
+        if (!m_lastCreatedSettings) {
+        }
+        emit m_lastCreatedSettings->decorationSettings()->reconfigured();
+        // Send signal to all kwin instances
+        QDBusMessage message = QDBusMessage::createSignal(QStringLiteral("/KWin"),
+                                                          QStringLiteral("org.kde.KWin"),
+                                                          QStringLiteral("reloadConfig"));
+        QDBusConnection::sessionBus().send(message);
+    };
+    connect(&dialog, &QDialog::accepted, this, save);
 
     QDialogButtonBox *buttons = new QDialogButtonBox(QDialogButtonBox::Ok |
                                                      QDialogButtonBox::Cancel |
@@ -211,7 +224,7 @@ void PreviewBridge::configure()
     // Here we connect our buttons with the dialog
     connect(buttons, &QDialogButtonBox::accepted, &dialog, &QDialog::accept);
     connect(buttons, &QDialogButtonBox::rejected, &dialog, &QDialog::reject);
-    connect(apply, &QPushButton::clicked, kcm, &KCModule::save);
+    connect(apply, &QPushButton::clicked, this, save);
     connect(reset, &QPushButton::clicked, kcm, &KCModule::load);
     auto changedSignal = static_cast<void(KCModule::*)(bool)>(&KCModule::changed);
     connect(kcm, changedSignal, apply, &QPushButton::setEnabled);