Remove compositing initialized check

Summary:
The check is used to limit settings reload. But we can afford to reload
settings in case the compositing gets toggled since this happens rarely.

Removing the check reduces code complexity.

Test Plan: Manually in X and Wayland.

Reviewers: #kwin, zzag

Reviewed By: #kwin, zzag

Subscribers: kwin

Tags: #kwin

Maniphest Tasks: T11071

Differential Revision: https://phabricator.kde.org/D22220

composite.cpp

@@ -193,9 +193,7 @@ void Compositor::setup()
     }
     m_starting = true;
 
-    if (!options->isCompositingInitialized()) {
+    options->reloadCompositingSettings(true);
-        options->reloadCompositingSettings(true);
-    }
     slotCompositingOptionsInitialized();
 }
 
@@ -514,7 +512,6 @@ void Compositor::slotReinitialize()
     finish();
     // resume compositing if suspended
     m_suspended = NoReasonSuspend;
-    options->setCompositingInitialized(false);
     setup();
 
     if (effects) { // setup() may fail

options.cpp

@@ -112,7 +112,6 @@ Options::Options(QObject *parent)
     , m_autogroupInForeground(false)
     , m_compositingMode(Options::defaultCompositingMode())
     , m_useCompositing(Options::defaultUseCompositing())
-    , m_compositingInitialized(Options::defaultCompositingInitialized())
     , m_hiddenPreviews(Options::defaultHiddenPreviews())
     , m_glSmoothScale(Options::defaultGlSmoothScale())
     , m_xrenderSmoothScale(Options::defaultXrenderSmoothScale())
@@ -615,15 +614,6 @@ void Options::setUseCompositing(bool useCompositing)
     emit useCompositingChanged();
 }
 
-void Options::setCompositingInitialized(bool compositingInitialized)
-{
-    if (m_compositingInitialized == compositingInitialized) {
-        return;
-    }
-    m_compositingInitialized = compositingInitialized;
-    emit compositingInitializedChanged();
-}
-
 void Options::setHiddenPreviews(int hiddenPreviews)
 {
     if (m_hiddenPreviews == static_cast<HiddenPreviews>(hiddenPreviews)) {
@@ -787,7 +777,6 @@ void Options::updateSettings()
 // KDE4 this probably needs to be done manually in clients
 
     // Driver-specific config detection
-    setCompositingInitialized(false);
     reloadCompositingSettings();
 
     emit configChanged();
@@ -956,9 +945,6 @@ void Options::reloadCompositingSettings(bool force)
     }
     m_settings->load();
     syncFromKcfgc();
-    // from now on we've an initial setup and don't have to reload settings on compositing activation
-    // see Workspace::setupCompositing(), composite.cpp
-    setCompositingInitialized(true);
 
     // Compositing settings
     KConfigGroup config(m_settings->config(), "Compositing");

options.h

@@ -167,7 +167,6 @@ class KWIN_EXPORT Options : public QObject
     Q_PROPERTY(bool autogroupInForeground READ isAutogroupInForeground WRITE setAutogroupInForeground NOTIFY autogroupInForegroundChanged)
     Q_PROPERTY(int compositingMode READ compositingMode WRITE setCompositingMode NOTIFY compositingModeChanged)
     Q_PROPERTY(bool useCompositing READ isUseCompositing WRITE setUseCompositing NOTIFY useCompositingChanged)
-    Q_PROPERTY(bool compositingInitialized READ isCompositingInitialized WRITE setCompositingInitialized NOTIFY compositingInitializedChanged)
     Q_PROPERTY(int hiddenPreviews READ hiddenPreviews WRITE setHiddenPreviews NOTIFY hiddenPreviewsChanged)
     /**
      * 0 = no, 1 = yes when transformed,
@@ -558,9 +557,6 @@ public:
     }
     // Separate to mode so the user can toggle
     bool isUseCompositing() const;
-    bool isCompositingInitialized() const {
-        return m_compositingInitialized;
-    }
 
     // General preferences
     HiddenPreviews hiddenPreviews() const {
@@ -662,7 +658,6 @@ public:
     void setAutogroupInForeground(bool autogroupInForeground);
     void setCompositingMode(int compositingMode);
     void setUseCompositing(bool useCompositing);
-    void setCompositingInitialized(bool compositingInitialized);
     void setHiddenPreviews(int hiddenPreviews);
     void setGlSmoothScale(int glSmoothScale);
     void setXrenderSmoothScale(bool xrenderSmoothScale);
@@ -746,9 +741,6 @@ public:
     static bool defaultUseCompositing() {
         return true;
     }
-    static bool defaultCompositingInitialized() {
-        return false;
-    }
     static HiddenPreviews defaultHiddenPreviews() {
         return HiddenPreviewsShown;
     }
@@ -853,7 +845,6 @@ Q_SIGNALS:
     void autogroupInForegroundChanged();
     void compositingModeChanged();
     void useCompositingChanged();
-    void compositingInitializedChanged();
     void hiddenPreviewsChanged();
     void glSmoothScaleChanged();
     void xrenderSmoothScaleChanged();
@@ -898,7 +889,6 @@ private:
 
     CompositingType m_compositingMode;
     bool m_useCompositing;
-    bool m_compositingInitialized;
     HiddenPreviews m_hiddenPreviews;
     int m_glSmoothScale;
     bool m_xrenderSmoothScale;