IJPL-217440 Rework the inactive window rendering mechanism

GitOrigin-RevId: 32e9e610d74aea5ccc1893689eab2f893b3cee39

platform/navbar/frontend/src/NavBarRootPaneExtension.kt

@@ -15,6 +15,7 @@ import com.intellij.openapi.application.EDT
 import com.intellij.openapi.application.UI
 import com.intellij.openapi.application.impl.BorderPainterHolder
 import com.intellij.openapi.application.impl.InternalUICustomization
+import com.intellij.openapi.application.impl.islands.isIjpl217440
 import com.intellij.openapi.project.Project
 import com.intellij.openapi.wm.IdeRootPaneNorthExtension
 import com.intellij.openapi.wm.StatusBar
@@ -31,7 +32,6 @@ import com.intellij.ui.hover.HoverListener
 import com.intellij.ui.scale.JBUIScale.scale
 import com.intellij.util.concurrency.AppExecutorUtil
 import com.intellij.util.ui.JBInsets
-import com.intellij.util.ui.JBSwingUtilities
 import com.intellij.util.ui.JBUI
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.channels.Channel
@@ -100,7 +100,7 @@ internal class NavBarRootPaneExtension : IdeRootPaneNorthExtension {
   // used externally
   abstract class NavBarWrapperPanel(layout: LayoutManager?) : JPanel(layout), UISettingsListener {
     override fun getComponentGraphics(graphics: Graphics): Graphics {
-      return JBSwingUtilities.runGlobalCGTransform(this, super.getComponentGraphics(graphics))
+      return InternalUICustomization.runGlobalCGTransformWithInactiveFrameSupport(this, super.getComponentGraphics(graphics))
     }
   }
 }
@@ -276,6 +276,7 @@ internal open class MyNavBarWrapperPanel(private val project: Project, useAsComp
   }
 }
 
+// todo remove with isIjpl217440 property
 internal class MyTopNavBarWrapperPanel(project: Project, useAsComponent: Boolean) :
   MyNavBarWrapperPanel(project, useAsComponent), BorderPainterHolder {
 
@@ -283,7 +284,9 @@ internal class MyTopNavBarWrapperPanel(project: Project, useAsComponent: Boolean
 
   override fun paintChildren(g: Graphics) {
     super.paintChildren(g)
-    borderPainter.paintAfterChildren(this, g)
+    if (!isIjpl217440) {
+      borderPainter.paintAfterChildren(this, g)
+    }
   }
 }
 

platform/platform-impl/src/com/intellij/openapi/actionSystem/impl/ActionButton.java

@@ -10,6 +10,7 @@ import com.intellij.openapi.actionSystem.*;
 import com.intellij.openapi.actionSystem.ex.*;
 import com.intellij.openapi.application.WriteIntentReadAction;
 import com.intellij.openapi.application.impl.InternalUICustomization;
+import com.intellij.openapi.application.impl.islands.IslandsUICustomizationKt;
 import com.intellij.openapi.diagnostic.Logger;
 import com.intellij.openapi.editor.Editor;
 import com.intellij.openapi.keymap.KeymapUtil;
@@ -472,12 +473,13 @@ public class ActionButton extends JComponent implements ActionButtonComponent, A
     return KeymapUtil.getFirstKeyboardShortcutText(myAction);
   }
 
+  // todo remove with isIjpl217440 property
   private final InternalUICustomization myCustomization = InternalUICustomization.getInstance();
 
   @Override
   public void paintComponent(Graphics g) {
     jComponentPaint(g);
-    if (myCustomization != null) {
+    if (myCustomization != null && !IslandsUICustomizationKt.isIjpl217440()) {
       g = myCustomization.preserveGraphics(g);
     }
     paintButtonLook(g);

platform/platform-impl/src/com/intellij/openapi/application/impl/InternalUICustomization.kt

@@ -18,6 +18,7 @@ import com.intellij.toolWindow.StripesUxCustomizer
 import com.intellij.toolWindow.ToolWindowButtonManager
 import com.intellij.toolWindow.xNext.XNextStripesUxCustomizer
 import com.intellij.ui.BorderPainter
+import com.intellij.ui.Graphics2DDelegate
 import com.intellij.ui.JBColor
 import com.intellij.ui.mac.WindowTabsComponent
 import com.intellij.ui.tabs.JBTabPainter
@@ -25,6 +26,7 @@ import com.intellij.ui.tabs.JBTabsPosition
 import com.intellij.ui.tabs.impl.JBTabsImpl
 import com.intellij.ui.tabs.impl.TabLabel
 import com.intellij.ui.tabs.impl.TabPainterAdapter
+import com.intellij.util.ui.JBSwingUtilities
 import com.intellij.util.ui.JBUI
 import org.jetbrains.annotations.ApiStatus
 import java.awt.*
@@ -51,6 +53,17 @@ open class InternalUICustomization {
       instance = result
       return result
     }
+
+    fun runGlobalCGTransformWithInactiveFrameSupport(component: JComponent, graphics: Graphics): Graphics {
+      if (graphics is Graphics2DDelegate) {
+        return graphics
+      }
+
+      val customization = getInstance()
+      val inactiveFrameGraphics = customization?.inactiveFrameGraphics(graphics, component) ?: graphics
+
+      return JBSwingUtilities.runGlobalCGTransform(component, inactiveFrameGraphics)
+    }
   }
 
   open fun progressWidget(project: Project): JComponent? = null
@@ -132,6 +145,8 @@ open class InternalUICustomization {
 
   open fun preserveGraphics(graphics: Graphics): Graphics = graphics
 
+  open fun inactiveFrameGraphics(graphics: Graphics, component: Component): Graphics = graphics
+
   open fun backgroundImageGraphics(component: JComponent, graphics: Graphics): Graphics = graphics
 
   open fun createCustomDivider(isVertical: Boolean, splitter: Splittable): Divider? = null
@@ -196,6 +211,7 @@ open class InternalUICustomization {
   open fun getSingleRowTabInsets(tabsPosition: JBTabsPosition): Insets? = null
 }
 
+// todo remove with isIjpl217440 property
 @ApiStatus.Internal
 interface BorderPainterHolder {
   var borderPainter: BorderPainter

platform/platform-impl/src/com/intellij/openapi/application/impl/islands/IslandsGradientPainter.kt

@@ -22,21 +22,27 @@ import com.intellij.ui.scale.ScaleContext
 import com.intellij.util.ui.JBUI
 import java.awt.*
 import javax.swing.JComponent
+import javax.swing.SwingUtilities
+
+/**
+ * The list of auto replaced colors. Should contain only very specific colors, don't add widely used like `Panel.background`
+ */
+private val islandsGradientColors = setOf(
+  // Root components
+  "MainWindow.background",
+  "MainToolbar.background",
+  "MainToolbar.inactiveBackground",
+  "ToolWindow.Stripe.background",
+  "StatusBar.background",
+)
+
+internal fun isIslandsGradientColor(paint: Paint?): Boolean {
+  val colorName = (paint as? JBColor)?.name ?: return false
+  return colorName in islandsGradientColors
+}
 
 internal class IslandsGradientPainter(private val frame: IdeFrame, private val mainColor: Color, private val enabled: () -> Boolean) : AbstractPainter() {
 
-  /**
-   * The list of auto replaced colors. Should contain only very specific colors, don't add widely used like `Panel.background`
-   */
-  private val islandsGradientColors = setOf(
-    // Root components
-    "MainWindow.background",
-    "MainToolbar.background",
-    "MainToolbar.inactiveBackground",
-    "ToolWindow.Stripe.background",
-    "StatusBar.background",
-    )
-
   private val projectWindowCustomizer = ProjectWindowCustomizerService.getInstance()
 
   private var doPaint = true
@@ -48,8 +54,7 @@ internal class IslandsGradientPainter(private val frame: IdeFrame, private val m
       try {
         doPaint = false
 
-        val colorName = (g.paint as? JBColor)?.name
-        if (colorName in islandsGradientColors) {
+        if (isIslandsGradientColor(g.paint)) {
           islandsGradientPaint(frame, mainColor, projectWindowCustomizer, component, g)
         }
       }
@@ -98,6 +103,13 @@ private fun doGradientPaint(frame: IdeFrame, mainColor: Color, project: Project,
 
   val leftGradientTexture = cache.left.getHorizontalTexture(g, leftWidth, mainColor, blendedColor)
   val rightGradientTexture = cache.right.getHorizontalTexture(g, rightWidth, blendedColor, mainColor, leftWidth)
+  val initialComposite = g.composite
+  val islandsInactiveFrameGraphics2D = g as? IslandsInactiveFrameGraphics2D
+
+  if (isIjpl217440 && SwingUtilities.getWindowAncestor(frame.component)?.isActive == false) {
+    islandsInactiveFrameGraphics2D?.preserveComposite = true
+    g.composite = AlphaComposite.getInstance(AlphaComposite.SRC_OVER, islandsInactiveAlpha)
+  }
 
   g.setRenderingHint(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY)
 
@@ -114,6 +126,9 @@ private fun doGradientPaint(frame: IdeFrame, mainColor: Color, project: Project,
   val startColor = if (SystemInfo.isMac) Gray.TRANSPARENT else ColorUtil.toAlpha(mainColor, 0)
   g.paint = GradientPaint(0f, 0f, startColor, 0f, height.toFloat(), mainColor)
   g.fillRect(0, 0, totalWidth, height)
+
+  g.composite = initialComposite
+  islandsInactiveFrameGraphics2D?.preserveComposite = false
 }
 
 private class GradientCache {

platform/platform-impl/src/com/intellij/openapi/application/impl/islands/IslandsInactiveFrameGraphics2D.kt

@@ -0,0 +1,188 @@
+// Copyright 2000-2026 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license.
+package com.intellij.openapi.application.impl.islands
+
+import com.intellij.ui.Graphics2DDelegate
+import java.awt.*
+import java.awt.image.BufferedImage
+import java.awt.image.BufferedImageOp
+import java.awt.image.ImageObserver
+import java.text.AttributedCharacterIterator
+import javax.swing.SwingUtilities
+
+/**
+ * Paints everything with alpha [islandsInactiveAlpha] when the frame is not active
+ */
+internal class IslandsInactiveFrameGraphics2D(g: Graphics2D, private val component: Component) : Graphics2DDelegate(g) {
+
+  var preserveComposite: Boolean = false
+
+  private fun getAlpha(): Float {
+    return if (SwingUtilities.getWindowAncestor(component)?.isActive == false) islandsInactiveAlpha else 1f
+  }
+
+  private fun <R> wrapPaint(runnable: () -> R): R {
+    val alpha = getAlpha()
+
+    if (alpha == 1f || preserveComposite || isIslandsGradientColor(paint)) {
+      return runnable.invoke()
+    }
+
+    val composite = getComposite()
+    try {
+      when (composite) {
+        is AlphaComposite -> {
+          setComposite(AlphaComposite.getInstance(composite.getRule(), composite.alpha * alpha))
+        }
+        null -> {
+          setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, alpha))
+        }
+      }
+
+      return runnable.invoke()
+    }
+    finally {
+      setComposite(composite)
+    }
+  }
+
+  override fun clearRect(x: Int, y: Int, width: Int, height: Int) {
+    wrapPaint {
+      super.clearRect(x, y, width, height)
+    }
+  }
+
+  override fun fillRect(x: Int, y: Int, width: Int, height: Int) {
+    wrapPaint {
+      super.fillRect(x, y, width, height)
+    }
+  }
+
+  override fun fillArc(x: Int, y: Int, width: Int, height: Int, startAngle: Int, arcAngle: Int) {
+    wrapPaint {
+      super.fillArc(x, y, width, height, startAngle, arcAngle)
+    }
+  }
+
+  override fun fillOval(x: Int, y: Int, width: Int, height: Int) {
+    wrapPaint {
+      super.fillOval(x, y, width, height)
+    }
+  }
+
+  override fun fillPolygon(xPoints: IntArray, yPoints: IntArray, nPoints: Int) {
+    wrapPaint {
+      super.fillPolygon(xPoints, yPoints, nPoints)
+    }
+  }
+
+  override fun fillPolygon(s: Polygon) {
+    wrapPaint {
+      super.fillPolygon(s)
+    }
+  }
+
+  override fun fillRoundRect(x: Int, y: Int, width: Int, height: Int, arcWidth: Int, arcHeight: Int) {
+    wrapPaint {
+      super.fillRoundRect(x, y, width, height, arcWidth, arcHeight)
+    }
+  }
+
+  override fun fill(s: Shape) {
+    wrapPaint {
+      super.fill(s)
+    }
+  }
+
+  override fun drawImage(img: BufferedImage, op: BufferedImageOp?, x: Int, y: Int) {
+    wrapPaint {
+      super.drawImage(img, op, x, y)
+    }
+  }
+
+  override fun drawImage(img: Image?, x: Int, y: Int, width: Int, height: Int, observer: ImageObserver?): Boolean {
+    return wrapPaint {
+      super.drawImage(img, x, y, width, height, observer)
+    }
+  }
+
+  override fun drawImage(img: Image?, x: Int, y: Int, width: Int, height: Int, c: Color?, observer: ImageObserver?): Boolean {
+    return wrapPaint {
+      super.drawImage(img, x, y, width, height, c, observer)
+    }
+  }
+
+  override fun drawImage(img: Image, x: Int, y: Int, observer: ImageObserver?): Boolean {
+    return wrapPaint {
+      super.drawImage(img, x, y, observer)
+    }
+  }
+
+  override fun drawImage(img: Image, x: Int, y: Int, c: Color?, observer: ImageObserver?): Boolean {
+    return wrapPaint {
+      super.drawImage(img, x, y, c, observer)
+    }
+  }
+
+  override fun drawImage(
+    img: Image?,
+    dx1: Int,
+    dy1: Int,
+    dx2: Int,
+    dy2: Int,
+    sx1: Int,
+    sy1: Int,
+    sx2: Int,
+    sy2: Int,
+    observer: ImageObserver?,
+  ): Boolean {
+    return wrapPaint {
+      super.drawImage(img, dx1, dy1, dx2, dy2, sx1, sy1, sx2, sy2, observer)
+    }
+  }
+
+  override fun drawImage(
+    img: Image?,
+    dx1: Int,
+    dy1: Int,
+    dx2: Int,
+    dy2: Int,
+    sx1: Int,
+    sy1: Int,
+    sx2: Int,
+    sy2: Int,
+    c: Color?,
+    observer: ImageObserver?,
+  ): Boolean {
+    return wrapPaint {
+      super.drawImage(img, dx1, dy1, dx2, dy2, sx1, sy1, sx2, sy2, c, observer)
+    }
+  }
+
+  override fun drawString(iterator: AttributedCharacterIterator?, x: Float, y: Float) {
+    wrapPaint {
+      super.drawString(iterator, x, y)
+    }
+  }
+
+  override fun drawString(iterator: AttributedCharacterIterator?, x: Int, y: Int) {
+    wrapPaint {
+      super.drawString(iterator, x, y)
+    }
+  }
+
+  override fun drawString(s: String?, x: Float, y: Float) {
+    wrapPaint {
+      super.drawString(s, x, y)
+    }
+  }
+
+  override fun drawString(str: String, x: Int, y: Int) {
+    wrapPaint {
+      super.drawString(str, x, y)
+    }
+  }
+
+  override fun create(): Graphics {
+    return IslandsInactiveFrameGraphics2D(super.create() as Graphics2D, component)
+  }
+}

platform/platform-impl/src/com/intellij/openapi/application/impl/islands/IslandsUICustomization.kt

@@ -27,6 +27,7 @@ import com.intellij.openapi.ui.*
 import com.intellij.openapi.util.Key
 import com.intellij.openapi.util.SystemInfo
 import com.intellij.openapi.util.SystemInfoRt
+import com.intellij.openapi.util.registry.Registry
 import com.intellij.openapi.wm.*
 import com.intellij.openapi.wm.ex.ToolWindowManagerEx
 import com.intellij.openapi.wm.impl.*
@@ -53,6 +54,7 @@ import com.intellij.ui.tabs.impl.JBTabsImpl
 import com.intellij.ui.tabs.impl.TabLabel
 import com.intellij.ui.tabs.impl.TabPainterAdapter
 import com.intellij.util.ui.*
+import org.jetbrains.annotations.ApiStatus
 import java.awt.*
 import java.awt.event.AWTEventListener
 import java.awt.event.HierarchyEvent
@@ -70,7 +72,21 @@ private data class WindowBackgroundComponentData(val origOpaque: Boolean, val or
 
 private val WINDOW_BACKGROUND_COMPONENT_KEY: Key<WindowBackgroundComponentData> = Key.create("Islands.WINDOW_BACKGROUND_COMPONENT_KEY")
 
+/**
+ * After removing isIjpl217440 property
+ * * Re3move from registry.properties
+ * * Check all places, marked with: todo remove with isIjpl217440 property
+ * * Remove inactiveAlphaInStatusBar property from everywhere including themes
+ */
+@get:ApiStatus.Internal
+val isIjpl217440: Boolean
+  get() = Registry.`is`("idea.islands.ijpl217440.enabled")
+
+internal val islandsInactiveAlpha: Float
+  get() = JBUI.getFloat("Island.inactiveAlpha", 0.5f)
+
 internal class IslandsUICustomization : InternalUICustomization() {
+
   private val isIslandsAvailable = ExperimentalUI.isNewUI()
 
   private var isManyIslandEnabledCache: Boolean? = null
@@ -582,12 +598,14 @@ internal class IslandsUICustomization : InternalUICustomization() {
   }
 
   private fun configureMainFrameChildren(component: Component, install: Boolean) {
-    when (component) {
-      is IdeStatusBarImpl -> {
-        component.borderPainter = if (install) inactivePainter else DefaultBorderPainter()
-      }
-      is BorderPainterHolder -> {
-        component.borderPainter = if (install) inactivePainter else DefaultBorderPainter()
+    if (!isIjpl217440) {
+      when (component) {
+        is IdeStatusBarImpl -> {
+          component.borderPainter = if (install) inactivePainter else DefaultBorderPainter()
+        }
+        is BorderPainterHolder -> {
+          component.borderPainter = if (install) inactivePainter else DefaultBorderPainter()
+        }
       }
     }
 
@@ -1062,6 +1080,12 @@ internal class IslandsUICustomization : InternalUICustomization() {
     return graphics
   }
 
+  override fun inactiveFrameGraphics(graphics: Graphics, component: Component): Graphics {
+    return if (isManyIslandEnabled && isIjpl217440)
+      IslandsInactiveFrameGraphics2D(graphics as Graphics2D, component)
+    else super.inactiveFrameGraphics(graphics, component)
+  }
+
   override fun backgroundImageGraphics(component: JComponent, graphics: Graphics): Graphics {
     if (isManyIslandEnabled && isIslandsGradientEnabled) {
       return IdeBackgroundUtil.getOriginalGraphics(graphics) // not supported for island themes with gradients yet

platform/platform-impl/src/com/intellij/openapi/wm/impl/customFrameDecorations/header/CustomHeader.kt

@@ -7,6 +7,7 @@ import com.intellij.icons.AllIcons
 import com.intellij.openapi.MnemonicHelper
 import com.intellij.openapi.application.ApplicationManager
 import com.intellij.openapi.application.impl.BorderPainterHolder
+import com.intellij.openapi.application.impl.islands.isIjpl217440
 import com.intellij.openapi.diagnostic.logger
 import com.intellij.openapi.ui.JBPopupMenu
 import com.intellij.openapi.util.NlsActions
@@ -290,9 +291,12 @@ internal sealed class CustomHeader(@JvmField internal val window: Window) : JPan
     closeMenuItem.font = JBFont.label().deriveFont(Font.BOLD)
   }
 
+  // todo remove with isIjpl217440 property
   override fun paint(g: Graphics) {
     super.paint(g)
-    borderPainter.paintAfterChildren(this, g)
+    if (!isIjpl217440) {
+      borderPainter.paintAfterChildren(this, g)
+    }
   }
 
   override fun getAccessibleContext(): AccessibleContext {

platform/platform-impl/src/com/intellij/openapi/wm/impl/customFrameDecorations/header/MacToolbarFrameHeader.kt

@@ -13,6 +13,7 @@ import com.intellij.openapi.application.UI
 import com.intellij.openapi.application.asContextElement
 import com.intellij.openapi.application.impl.BorderPainterHolder
 import com.intellij.openapi.application.impl.InternalUICustomization
+import com.intellij.openapi.application.impl.islands.isIjpl217440
 import com.intellij.openapi.wm.impl.ToolbarHolder
 import com.intellij.openapi.wm.impl.customFrameDecorations.header.titleLabel.SimpleCustomDecorationPath
 import com.intellij.openapi.wm.impl.headertoolbar.MainToolbar
@@ -159,9 +160,12 @@ internal class MacToolbarFrameHeader(
     return CustomWindowHeaderUtil.getPreferredWindowHeaderHeight(view is CompactHeaderView)
   }
 
+  // todo remove with isIjpl217440 property
   override fun paint(g: Graphics) {
     super.paint(g)
-    borderPainter.paintAfterChildren(this, g)
+    if (!isIjpl217440) {
+      borderPainter.paintAfterChildren(this, g)
+    }
   }
 
   override fun paintComponent(g: Graphics) {

platform/platform-impl/src/com/intellij/openapi/wm/impl/customFrameDecorations/header/toolbar/ToolbarFrameHeader.kt

@@ -33,7 +33,6 @@ import com.intellij.ui.dsl.gridLayout.VerticalAlign
 import com.intellij.ui.dsl.gridLayout.builders.RowsGridBuilder
 import com.intellij.util.ui.GridBag
 import com.intellij.util.ui.JBDimension
-import com.intellij.util.ui.JBSwingUtilities
 import com.intellij.util.ui.JBUI
 import kotlinx.coroutines.*
 import kotlinx.coroutines.channels.BufferOverflow
@@ -393,7 +392,7 @@ internal class ToolbarFrameHeader(
   }
 
   override fun getComponentGraphics(graphics: Graphics): Graphics {
-    return JBSwingUtilities.runGlobalCGTransform(this, super.getComponentGraphics(graphics))
+    return InternalUICustomization.runGlobalCGTransformWithInactiveFrameSupport(this, super.getComponentGraphics(graphics))
   }
 
   override fun updateActive() {

platform/platform-impl/src/com/intellij/openapi/wm/impl/headertoolbar/MainToolbar.kt

@@ -29,6 +29,7 @@ import com.intellij.openapi.application.EDT
 import com.intellij.openapi.application.UiWithModelAccess
 import com.intellij.openapi.application.impl.BorderPainterHolder
 import com.intellij.openapi.application.impl.InternalUICustomization
+import com.intellij.openapi.application.impl.islands.isIjpl217440
 import com.intellij.openapi.diagnostic.logger
 import com.intellij.openapi.keymap.impl.ui.ActionsTreeUtil
 import com.intellij.openapi.project.DumbAwareAction
@@ -48,7 +49,6 @@ import com.intellij.ui.components.panels.HorizontalLayout
 import com.intellij.ui.mac.touchbar.TouchbarSupport
 import com.intellij.util.containers.ContainerUtil
 import com.intellij.util.ui.JBInsets
-import com.intellij.util.ui.JBSwingUtilities
 import com.intellij.util.ui.JBUI
 import com.intellij.util.ui.JBUI.CurrentTheme.Toolbar.mainToolbarButtonInsets
 import com.intellij.util.ui.showingScope
@@ -181,7 +181,9 @@ class MainToolbar(
     }
   }
 
-  override fun getComponentGraphics(g: Graphics): Graphics = JBSwingUtilities.runGlobalCGTransform(this, g)
+  override fun getComponentGraphics(g: Graphics): Graphics {
+    return InternalUICustomization.runGlobalCGTransformWithInactiveFrameSupport(this, g)
+  }
 
   suspend fun init(customTitleBar: WindowDecorations.CustomTitleBar? = null) {
     val schema = CustomActionsSchema.getInstanceAsync()
@@ -301,9 +303,12 @@ class MainToolbar(
     }
   }
 
+  // todo remove with isIjpl217440 property
   override fun paintChildren(g: Graphics) {
     super.paintChildren(g)
-    borderPainter.paintAfterChildren(this, g)
+    if (!isIjpl217440) {
+      borderPainter.paintAfterChildren(this, g)
+    }
   }
 
   private fun installClickListener(popupHandler: PopupHandler, customTitleBar: WindowDecorations.CustomTitleBar?) {

platform/platform-impl/src/com/intellij/openapi/wm/impl/status/IdeStatusBarImpl.kt

@@ -10,6 +10,8 @@ import com.intellij.internal.statistic.service.fus.collectors.UIEventLogger.Stat
 import com.intellij.openapi.Disposable
 import com.intellij.openapi.actionSystem.*
 import com.intellij.openapi.application.*
+import com.intellij.openapi.application.impl.InternalUICustomization
+import com.intellij.openapi.application.impl.islands.isIjpl217440
 import com.intellij.openapi.components.service
 import com.intellij.openapi.components.serviceAsync
 import com.intellij.openapi.diagnostic.debug
@@ -57,7 +59,6 @@ import com.intellij.ui.util.height
 import com.intellij.util.EventDispatcher
 import com.intellij.util.concurrency.annotations.RequiresEdt
 import com.intellij.util.ui.EdtInvocationManager
-import com.intellij.util.ui.JBSwingUtilities
 import com.intellij.util.ui.JBUI
 import com.intellij.util.ui.UIUtil
 import kotlinx.coroutines.*
@@ -126,6 +127,7 @@ open class IdeStatusBarImpl @Internal constructor(
 
   private val progressFlow = MutableSharedFlow<ProgressSetChangeEvent>(replay = 1, extraBufferCapacity = Int.MAX_VALUE)
 
+  // todo remove with isIjpl217440 property
   internal var borderPainter: BorderPainter = DefaultBorderPainter()
 
   companion object {
@@ -555,7 +557,9 @@ open class IdeStatusBarImpl @Internal constructor(
   override fun paintChildren(g: Graphics) {
     effectRenderer.paintBackground(g)
     super.paintChildren(g)
-    borderPainter.paintAfterChildren(this, g)
+    if (!isIjpl217440) {
+      borderPainter.paintAfterChildren(this, g)
+    }
   }
 
   private fun dispatchMouseEvent(e: MouseEvent): Boolean {
@@ -635,7 +639,7 @@ open class IdeStatusBarImpl @Internal constructor(
   }
 
   override fun getComponentGraphics(g: Graphics): Graphics {
-    return JBSwingUtilities.runGlobalCGTransform(this, super.getComponentGraphics(g))
+    return InternalUICustomization.runGlobalCGTransformWithInactiveFrameSupport(this, super.getComponentGraphics(g))
   }
 
   override fun removeWidget(id: String) {

platform/platform-impl/src/com/intellij/toolWindow/ToolWindowPane.kt

@@ -10,6 +10,7 @@ import com.intellij.ide.ui.UISettingsListener
 import com.intellij.openapi.application.ApplicationManager
 import com.intellij.openapi.application.impl.BorderPainterHolder
 import com.intellij.openapi.application.impl.InternalUICustomization
+import com.intellij.openapi.application.impl.islands.isIjpl217440
 import com.intellij.openapi.diagnostic.debug
 import com.intellij.openapi.diagnostic.logger
 import com.intellij.openapi.ui.Divider
@@ -399,7 +400,9 @@ class ToolWindowPane private constructor(
 
   override fun paintChildren(g: Graphics) {
     super.paintChildren(g)
-    borderPainter.paintAfterChildren(this, g)
+    if (!isIjpl217440) {
+      borderPainter.paintAfterChildren(this, g)
+    }
   }
 
   val bottomHeight: Int

platform/platform-impl/src/com/intellij/toolWindow/ToolWindowToolbar.kt

@@ -4,6 +4,8 @@ package com.intellij.toolWindow
 
 import com.intellij.accessibility.AccessibilityUtils
 import com.intellij.openapi.application.impl.BorderPainterHolder
+import com.intellij.openapi.application.impl.InternalUICustomization
+import com.intellij.openapi.application.impl.islands.isIjpl217440
 import com.intellij.openapi.project.Project
 import com.intellij.openapi.ui.VerticalFlowLayout
 import com.intellij.openapi.util.NlsSafe
@@ -109,9 +111,16 @@ abstract class ToolWindowToolbar(private val isPrimary: Boolean, val anchor: Too
   open fun createBorder():Border = JBUI.Borders.empty()
   open fun getBorderColor(): Color? = JBUI.CurrentTheme.ToolWindow.borderColor()
 
+  // todo remove with isIjpl217440 property
   override fun paint(g: Graphics) {
     super.paint(g)
-    borderPainter.paintAfterChildren(this, g)
+    if (!isIjpl217440) {
+      borderPainter.paintAfterChildren(this, g)
+    }
+  }
+
+  override fun getComponentGraphics(graphics: Graphics?): Graphics? {
+    return InternalUICustomization.runGlobalCGTransformWithInactiveFrameSupport(this, graphics as Graphics2D)
   }
 
   internal abstract fun getStripeFor(anchor: ToolWindowAnchor): AbstractDroppableStripe
@@ -175,9 +184,9 @@ abstract class ToolWindowToolbar(private val isPrimary: Boolean, val anchor: Too
   }
 
   internal class StripeV2(private val toolBar: ToolWindowToolbar,
-                          paneId: String,
-                          override val anchor: ToolWindowAnchor,
-                          override val split: Boolean = false,
+    paneId: String,
+    override val anchor: ToolWindowAnchor,
+    override val split: Boolean = false,
                           layout : LayoutManager = VerticalFlowLayout(0, 0)
   ) : AbstractDroppableStripe(paneId, layout) {
     var bottomAnchorDropAreaComponent: JComponent? = null
@@ -236,6 +245,10 @@ abstract class ToolWindowToolbar(private val isPrimary: Boolean, val anchor: Too
       return super.containsPoint(screenPoint)
     }
 
+    override fun getComponentGraphics(graphics: Graphics?): Graphics {
+      return InternalUICustomization.runGlobalCGTransformWithInactiveFrameSupport(this, graphics as Graphics2D)
+    }
+
     private fun getFirstVisibleToolWindowSize(width: Boolean): Int {
       for (button in getButtons()) {
         if (button.toolWindow.isVisible) {

platform/platform-impl/src/com/intellij/ui/mac/WindowTabsComponent.java

@@ -8,6 +8,7 @@ import com.intellij.openapi.actionSystem.*;
 import com.intellij.openapi.application.ApplicationManager;
 import com.intellij.openapi.application.impl.BorderPainterHolder;
 import com.intellij.openapi.application.impl.InternalUICustomization;
+import com.intellij.openapi.application.impl.islands.IslandsUICustomizationKt;
 import com.intellij.openapi.components.ComponentManagerEx;
 import com.intellij.openapi.project.DumbAwareAction;
 import com.intellij.openapi.project.Project;
@@ -71,6 +72,7 @@ public final class WindowTabsComponent extends JBTabsImpl implements BorderPaint
   private final Disposable myParentDisposable;
   private final Map<IdeFrameImpl, Integer> myIndexes = new HashMap<>();
 
+  // todo remove with isIjpl217440 property
   private BorderPainter borderPainter = new DefaultBorderPainter();
 
   public WindowTabsComponent(@NotNull IdeFrameImpl nativeWindow, @Nullable Project project, @NotNull Disposable parentDisposable) {
@@ -141,10 +143,13 @@ public final class WindowTabsComponent extends JBTabsImpl implements BorderPaint
     return new Dimension(super.getPreferredSize().width, JBUI.scale(TAB_HEIGHT));
   }
 
+  // todo remove with isIjpl217440 property
   @Override
   public void paintChildren(Graphics g) {
     super.paintChildren(g);
-    borderPainter.paintAfterChildren(this, g);
+    if (!IslandsUICustomizationKt.isIjpl217440()) {
+      borderPainter.paintAfterChildren(this, g);
+    }
   }
 
   @Override

platform/util/resources/misc/registry.properties

@@ -2359,6 +2359,9 @@ station.enable.welcome.screen.promo.description=Enables promo for Toolbox App
 
 idea.islands.color.gradient.enabled=false
 idea.islands.color.gradient.enabled.description=Enable gradient backgrounds for UI Islands color scheme elements
+idea.islands.ijpl217440.enabled=false
+idea.islands.ijpl217440.enabled.description=Enables IJPL-217440: Rework the inactive window rendering mechanism. Instead of restarting switching themes can be used
+idea.islands.ijpl217440.enabled.restartRequired=true
 
 vfs.fetch.case.sensitivity.using.eel=true
 vfs.fetch.case.sensitivity.using.eel.description=Enable directory case sensitivity fetching using EEL on WSL and Docker. \