Revert "perf(mainscreen): merging fix/damage-control"

This reverts commit 67a7f75c37, reversing
changes made to 8828d9d7be.

Modules/MainScreen/AllScreens.qml

@@ -103,20 +103,6 @@ Variants {
       }
     }
 
-    // Screen corners - 4 small PanelWindows, one per corner
-    Repeater {
-      model: ["topLeft", "topRight", "bottomLeft", "bottomRight"]
-      delegate: Loader {
-        active: windowItem.windowLoaded && windowItem.shouldBeActive
-        asynchronous: false
-
-        sourceComponent: ScreenCornerWindow {
-          screen: windowItem.modelData
-          corner: modelData
-        }
-      }
-    }
-
     // BarExclusionZone - created after MainScreen has fully loaded
     // Note: Exclusion zone should NOT be affected by hideOnOverview setting.
     // When bar is hidden during overview, the exclusion zone should remain to prevent

Modules/MainScreen/BarContentWindow.qml

@@ -33,6 +33,7 @@ PanelWindow {
 
   // Wayland layer configuration
   WlrLayershell.namespace: "noctalia-bar-content-" + (barWindow.screen?.name || "unknown")
+  WlrLayershell.layer: WlrLayer.Top
   WlrLayershell.exclusionMode: ExclusionMode.Ignore // Don't reserve space - BarExclusionZone in MainScreen handles that
 
   // Position and size to match bar location (per-screen)

Modules/MainScreen/BarExclusionZone.qml

@@ -37,6 +37,7 @@ PanelWindow {
   mask: Region {}
 
   // Wayland layer shell configuration
+  WlrLayershell.layer: WlrLayer.Top
   WlrLayershell.namespace: "noctalia-bar-exclusion-" + edge + "-" + (screen?.name || "unknown")
   // When auto-hide, non-exclusive mode is enabled, OR bar is explicitly hidden via IPC, don't reserve space
   // Note: We check BarService.isVisible directly, NOT effectivelyVisible, because we want

Modules/MainScreen/BarTriggerZone.qml

@@ -26,6 +26,7 @@ PanelWindow {
   focusable: false
 
   WlrLayershell.namespace: "noctalia-bar-trigger-" + (screen?.name || "unknown")
+  WlrLayershell.layer: WlrLayer.Top
   WlrLayershell.exclusionMode: ExclusionMode.Ignore
 
   // Anchor to bar's edge

Modules/MainScreen/MainScreen.qml

@@ -44,6 +44,9 @@ PanelWindow {
   }
 
   // Wayland
+  // As this is always rendered, putting it on the top layer
+  // would prevent direct scanout for other Wayland clients.
+  // WlrLayershell.layer: WlrLayer.Top
   WlrLayershell.namespace: "noctalia-background-" + (screen?.name || "unknown")
   WlrLayershell.exclusionMode: ExclusionMode.Ignore // Don't reserve space - BarExclusionZone handles that
   WlrLayershell.keyboardFocus: {
@@ -67,37 +70,18 @@ PanelWindow {
   }
 
   anchors {
-    top: isFramed || _needsFullscreen || _barPosition !== "bottom"
-    bottom: isFramed || _needsFullscreen || _barPosition !== "top"
-    left: isFramed || _needsFullscreen || _barPosition !== "right"
-    right: isFramed || _needsFullscreen || _barPosition !== "left"
+    top: true
+    bottom: true
+    left: true
+    right: true
   }
 
-  // Implicit sizes control the non-anchored dimension when collapsed (3 anchors).
-  // Layout: [margin] [bar] [max(margin, shadow)] — screen-edge side uses margin, inner side uses whichever is larger.
-  // When fullscreen (4 anchors), compositor ignores these.
-  implicitWidth: Math.ceil(barPlaceholder.barMarginH + barPlaceholder.barHeight + _innerPaddingH)
-  implicitHeight: Math.ceil(barPlaceholder.barMarginV + barPlaceholder.barHeight + _innerPaddingV)
-
   // Desktop dimming when panels are open
   property real dimmerOpacity: Settings.data.general.dimmerOpacity ?? 0.8
   property bool isPanelOpen: (PanelService.openedPanel !== null) && (PanelService.openedPanel.screen === screen)
   property bool isPanelClosing: (PanelService.openedPanel !== null) && PanelService.openedPanel.isClosing
   property bool isAnyPanelOpen: PanelService.openedPanel !== null
 
-  // Dynamic fullscreen management — collapse to bar-sized when idle to avoid fullscreen compositor damage
-  readonly property bool isFramed: Settings.data.bar.barType === "framed"
-  readonly property string _barPosition: Settings.getBarPositionForScreen(screen?.name)
-  readonly property bool _barIsVertical: _barPosition === "left" || _barPosition === "right"
-  property bool _needsFullscreen: isAnyPanelOpen || PanelService.closingPanel !== null || _dimmerAnimating
-  property bool _dimmerAnimating: false
-
-  // Shadow padding for collapsed window — shadow extends beyond bar into the screen
-  readonly property real _shadowPadding: (Settings.data.general.enableShadows && !PowerProfileService.noctaliaPerformanceMode) ? Style.shadowBlurMax + Math.max(Math.abs(Style.shadowHorizontalOffset), Math.abs(Style.shadowVerticalOffset)) : 0
-  // Inner padding: the side facing into the screen needs at least shadow clearance
-  readonly property real _innerPaddingH: Math.max(barPlaceholder.barMarginH, _shadowPadding)
-  readonly property real _innerPaddingV: Math.max(barPlaceholder.barMarginV, _shadowPadding)
-
   color: {
     if (dimmerOpacity > 0 && isPanelOpen && !isPanelClosing) {
       return Qt.alpha(Color.mShadow, dimmerOpacity);
@@ -110,7 +94,6 @@ PanelWindow {
     ColorAnimation {
       duration: isPanelClosing ? Style.animationFaster : Style.animationNormal
       easing.type: Easing.OutQuad
-      onRunningChanged: root._dimmerAnimating = running
     }
   }
 
@@ -480,11 +463,6 @@ PanelWindow {
       // Expose bar dimensions directly on this Item for BarBackground
       // Use screen dimensions directly
       x: {
-        if (!root._needsFullscreen && !root.isFramed) {
-          // Collapsed: bar is at margin from screen edge, shadow extends inward.
-          // For right bar the window faces left (inner side first), so bar starts after shadow clearance.
-          return barPosition === "right" ? root._innerPaddingH : barMarginH;
-        }
         if (barPosition === "right")
           return (screen?.width ?? 0) - barHeight - barMarginH;
         if (isFramed && !barIsVertical)
@@ -492,9 +470,6 @@ PanelWindow {
         return barMarginH;
       }
       y: {
-        if (!root._needsFullscreen && !root.isFramed) {
-          return barPosition === "bottom" ? root._innerPaddingV : barMarginV;
-        }
         if (barPosition === "bottom")
           return (screen?.height ?? 0) - barHeight - barMarginV;
         if (isFramed && barIsVertical)
@@ -572,6 +547,9 @@ PanelWindow {
       }
     }
 
+    // Screen Corners
+    ScreenCorners {}
+
     // Blur behind the bar and open panels
     // Helper object holding computed properties for blur regions
     QtObject {

Modules/MainScreen/ScreenCornerWindow.qml

@@ -1,87 +0,0 @@
-import QtQuick
-import QtQuick.Shapes
-import Quickshell
-import Quickshell.Wayland
-import qs.Commons
-
-/**
-* ScreenCornerWindow - Small PanelWindow that renders a single concave screen corner.
-*/
-PanelWindow {
-  id: root
-
-  required property string corner // "topLeft", "topRight", "bottomLeft", "bottomRight"
-
-  readonly property real s: Style.screenRadius
-  readonly property bool shouldShow: Settings.data.general.showScreenCorners && s > 0
-
-  visible: shouldShow
-  color: "transparent"
-
-  // Click-through
-  mask: Region {}
-
-  WlrLayershell.namespace: "noctalia-corner-" + corner + "-" + (screen?.name || "unknown")
-  WlrLayershell.exclusionMode: ExclusionMode.Ignore
-  WlrLayershell.keyboardFocus: WlrKeyboardFocus.None
-
-  anchors {
-    top: corner === "topLeft" || corner === "topRight"
-    bottom: corner === "bottomLeft" || corner === "bottomRight"
-    left: corner === "topLeft" || corner === "bottomLeft"
-    right: corner === "topRight" || corner === "bottomRight"
-  }
-
-  implicitWidth: Math.ceil(s)
-  implicitHeight: Math.ceil(s)
-
-  // Cache to texture to avoid continuous re-tessellation
-  Item {
-    anchors.fill: parent
-    layer.enabled: true
-
-    Shape {
-      anchors.fill: parent
-      preferredRendererType: Shape.CurveRenderer
-      asynchronous: true
-      enabled: false
-      visible: root.s > 0 && width > 0 && height > 0
-
-      ShapePath {
-        id: cornerPath
-
-        readonly property color cornerColor: Settings.data.general.forceBlackScreenCorners ? "black" : Color.mSurface
-
-        strokeWidth: -1
-        fillColor: root.shouldShow ? cornerColor : "transparent"
-
-        Behavior on fillColor {
-          enabled: !Color.isTransitioning
-          ColorAnimation {
-            duration: Style.animationFast
-          }
-        }
-
-        PathSvg {
-          path: {
-            var s = root.s;
-            if (s <= 0)
-              return "M -1 -1 L -1 0 L 0 0 Z";
-            switch (root.corner) {
-            case "topLeft":
-              return "M 0 0 L " + s + " 0 A " + s + " " + s + " 0 0 0 0 " + s + " Z";
-            case "topRight":
-              return "M 0 0 L " + s + " 0 L " + s + " " + s + " A " + s + " " + s + " 0 0 0 0 0 Z";
-            case "bottomLeft":
-              return "M 0 0 A " + s + " " + s + " 0 0 0 " + s + " " + s + " L 0 " + s + " Z";
-            case "bottomRight":
-              return "M " + s + " " + s + " L 0 " + s + " A " + s + " " + s + " 0 0 0 " + s + " 0 Z";
-            default:
-              return "M -1 -1 L -1 0 L 0 0 Z";
-            }
-          }
-        }
-      }
-    }
-  }
-}

Modules/MainScreen/ScreenCorners.qml

@@ -0,0 +1,231 @@
+import QtQuick
+import QtQuick.Shapes
+import qs.Commons
+
+/**
+* ScreenCorners - Shape component for rendering screen corners
+*
+* Renders concave corners at the screen edges to create a rounded screen effect.
+* Self-contained Shape component (no shadows).
+*/
+Item {
+  id: root
+
+  anchors.fill: parent
+
+  // Wrapper with layer caching to reduce GPU tessellation overhead
+  Item {
+    anchors.fill: parent
+
+    // Cache the Shape to a texture to prevent continuous re-tessellation
+    layer.enabled: true
+
+    Shape {
+      id: cornersShape
+
+      anchors.fill: parent
+      preferredRendererType: Shape.CurveRenderer
+      asynchronous: true
+      enabled: false // Disable mouse input
+      visible: cornersPath.cornerRadius > 0 && width > 0 && height > 0
+
+      ShapePath {
+        id: cornersPath
+
+        // Corner configuration
+        readonly property color cornerColor: Settings.data.general.forceBlackScreenCorners ? "black" : Color.mSurface
+        readonly property real cornerRadius: Style.screenRadius
+        readonly property real cornerSize: Style.screenRadius
+
+        // Determine margins based on bar position
+        readonly property real topMargin: 0
+        readonly property real bottomMargin: 0
+        readonly property real leftMargin: 0
+        readonly property real rightMargin: 0
+
+        // Screen dimensions
+        readonly property real screenWidth: cornersShape.width
+        readonly property real screenHeight: cornersShape.height
+
+        // Only show screen corners if enabled and appropriate conditions are met
+        readonly property bool shouldShow: Settings.data.general.showScreenCorners
+
+        // ShapePath configuration
+        strokeWidth: -1 // No stroke, fill only
+        fillColor: shouldShow ? cornerColor : "transparent"
+
+        // Smooth color animation (disabled during theme transitions to sync with Color.qml)
+        Behavior on fillColor {
+          enabled: !Color.isTransitioning
+          ColorAnimation {
+            duration: Style.animationFast
+          }
+        }
+
+        // ========== PATH DEFINITION ==========
+        // Draws 4 separate corner squares at screen edges
+        // Each corner square has a concave arc on the inner diagonal
+
+        // ========== TOP-LEFT CORNER ==========
+        // Arc is at the bottom-right of this square (inner diagonal)
+        // Start at top-left screen corner
+        startX: leftMargin
+        startY: topMargin
+
+        // Top edge (moving right)
+        PathLine {
+          relativeX: cornersPath.cornerSize
+          relativeY: 0
+        }
+
+        // Right edge (moving down toward arc)
+        PathLine {
+          relativeX: 0
+          relativeY: cornersPath.cornerSize - cornersPath.cornerRadius
+        }
+
+        // Concave arc (bottom-right corner of square, curving inward toward screen center)
+        PathArc {
+          relativeX: -cornersPath.cornerRadius
+          relativeY: cornersPath.cornerRadius
+          radiusX: cornersPath.cornerRadius
+          radiusY: cornersPath.cornerRadius
+          direction: PathArc.Counterclockwise
+        }
+
+        // Bottom edge (moving left)
+        PathLine {
+          relativeX: -(cornersPath.cornerSize - cornersPath.cornerRadius)
+          relativeY: 0
+        }
+
+        // Left edge (moving up) - closes back to start
+        PathLine {
+          relativeX: 0
+          relativeY: -cornersPath.cornerSize
+        }
+
+        // ========== TOP-RIGHT CORNER ==========
+        // Arc is at the bottom-left of this square (inner diagonal)
+        PathMove {
+          x: cornersPath.screenWidth - cornersPath.rightMargin - cornersPath.cornerSize
+          y: cornersPath.topMargin
+        }
+
+        // Top edge (moving right)
+        PathLine {
+          relativeX: cornersPath.cornerSize
+          relativeY: 0
+        }
+
+        // Right edge (moving down)
+        PathLine {
+          relativeX: 0
+          relativeY: cornersPath.cornerSize
+        }
+
+        // Bottom edge (moving left toward arc)
+        PathLine {
+          relativeX: -(cornersPath.cornerSize - cornersPath.cornerRadius)
+          relativeY: 0
+        }
+
+        // Concave arc (bottom-left corner of square, curving inward toward screen center)
+        PathArc {
+          relativeX: -cornersPath.cornerRadius
+          relativeY: -cornersPath.cornerRadius
+          radiusX: cornersPath.cornerRadius
+          radiusY: cornersPath.cornerRadius
+          direction: PathArc.Counterclockwise
+        }
+
+        // Left edge (moving up) - closes back to start
+        PathLine {
+          relativeX: 0
+          relativeY: -(cornersPath.cornerSize - cornersPath.cornerRadius)
+        }
+
+        // ========== BOTTOM-LEFT CORNER ==========
+        // Arc is at the top-right of this square (inner diagonal)
+        PathMove {
+          x: cornersPath.leftMargin
+          y: cornersPath.screenHeight - cornersPath.bottomMargin - cornersPath.cornerSize
+        }
+
+        // Top edge (moving right toward arc)
+        PathLine {
+          relativeX: cornersPath.cornerSize - cornersPath.cornerRadius
+          relativeY: 0
+        }
+
+        // Concave arc (top-right corner of square, curving inward toward screen center)
+        PathArc {
+          relativeX: cornersPath.cornerRadius
+          relativeY: cornersPath.cornerRadius
+          radiusX: cornersPath.cornerRadius
+          radiusY: cornersPath.cornerRadius
+          direction: PathArc.Counterclockwise
+        }
+
+        // Right edge (moving down)
+        PathLine {
+          relativeX: 0
+          relativeY: cornersPath.cornerSize - cornersPath.cornerRadius
+        }
+
+        // Bottom edge (moving left)
+        PathLine {
+          relativeX: -cornersPath.cornerSize
+          relativeY: 0
+        }
+
+        // Left edge (moving up) - closes back to start
+        PathLine {
+          relativeX: 0
+          relativeY: -cornersPath.cornerSize
+        }
+
+        // ========== BOTTOM-RIGHT CORNER ==========
+        // Arc is at the top-left of this square (inner diagonal)
+        // Start at bottom-right of square (different from other corners!)
+        PathMove {
+          x: cornersPath.screenWidth - cornersPath.rightMargin
+          y: cornersPath.screenHeight - cornersPath.bottomMargin
+        }
+
+        // Bottom edge (moving left)
+        PathLine {
+          relativeX: -cornersPath.cornerSize
+          relativeY: 0
+        }
+
+        // Left edge (moving up toward arc)
+        PathLine {
+          relativeX: 0
+          relativeY: -(cornersPath.cornerSize - cornersPath.cornerRadius)
+        }
+
+        // Concave arc (top-left corner of square, curving inward toward screen center)
+        PathArc {
+          relativeX: cornersPath.cornerRadius
+          relativeY: -cornersPath.cornerRadius
+          radiusX: cornersPath.cornerRadius
+          radiusY: cornersPath.cornerRadius
+          direction: PathArc.Counterclockwise
+        }
+
+        // Top edge (moving right)
+        PathLine {
+          relativeX: cornersPath.cornerSize - cornersPath.cornerRadius
+          relativeY: 0
+        }
+
+        // Right edge (moving down) - closes back to start
+        PathLine {
+          relativeX: 0
+          relativeY: cornersPath.cornerSize
+        }
+      }
+    }
+  }
+}

Modules/MainScreen/SmartPanel.qml

@@ -145,10 +145,8 @@ Item {
 
   // Panel visibility and sizing
   visible: isPanelVisible
-  // Always use screen dimensions for layout — MainScreen may be collapsed to bar-sized when idle,
-  // but panels must compute positions and sizes against the full screen.
-  width: screen?.width ?? (parent ? parent.width : 0)
-  height: screen?.height ?? (parent ? parent.height : 0)
+  width: parent ? parent.width : 0
+  height: parent ? parent.height : 0
 
   // Panel control functions
   function toggle(buttonItem, buttonName) {
@@ -292,11 +290,6 @@ Item {
     PanelService.closedPanel(root);
     closed();
 
-    // Flush pending double-buffered Wayland state (blur regions) that won't
-    // be committed otherwise — after an app launch the compositor may stop
-    // sending frame callbacks, leaving the render loop idle.
-    Window.window?.flushWaylandState();
-
     Logger.d("SmartPanel", "Panel closed immediately", objectName);
   }
 
@@ -323,9 +316,6 @@ Item {
     PanelService.closedPanel(root);
     closed();
 
-    // Flush pending double-buffered Wayland state (blur regions).
-    Window.window?.flushWaylandState();
-
     Logger.d("SmartPanel", "Panel close finalized", objectName);
   }