[compose] IJPL-213469 Skia loading causes UI freezes

(cherry picked from commit e7f9d2f71b2be2188547214bc6f18a7383d42499)


(cherry picked from commit a499a3063c5f4e3b8622d1453b85bd80c918b476)

IJ-MR-179919

GitOrigin-RevId: 61cffc1bb097419e72bb99fbe4d8d7ed16181ec3

platform/compose/BUILD.bazel

@@ -25,6 +25,7 @@ jvm_library(
     "@lib//:jetbrains-annotations",
     "@lib//:kotlinx-coroutines-core",
     "@lib//:jetbrains-compose-components-ui-tooling-preview-desktop",
+    "//platform/diagnostic/telemetry",
   ],
   exports = [
     "//platform/jewel/ui",
@@ -57,6 +58,8 @@ jvm_library(
     "@lib//:jetbrains-compose-components-ui-tooling-preview-desktop",
     "@lib//:junit4",
     "//platform/jewel/int-ui/int-ui-standalone:jewel-intUi-standalone",
+    "//platform/diagnostic/telemetry",
+    "//platform/diagnostic/telemetry:telemetry_test_lib",
   ],
   exports = [
     "//platform/jewel/ui",

platform/compose/intellij.platform.compose.iml

@@ -43,5 +43,6 @@
     <orderEntry type="library" exported="" name="jetbrains.compose.components.ui.tooling.preview.desktop" level="project" />
     <orderEntry type="library" scope="TEST" name="JUnit4" level="project" />
     <orderEntry type="module" module-name="intellij.platform.jewel.intUi.standalone" scope="TEST" />
+    <orderEntry type="module" module-name="intellij.platform.diagnostic.telemetry" />
   </component>
 </module>

platform/compose/resources/intellij.platform.compose.xml

@@ -6,6 +6,8 @@
                  description="Allows changing how ComposePanel is rendered using rendering on Graphics (when `true`, it provides smooth Swing interop) or on native AWT texture (when `false`). Works only in internal mode"
                  key="compose.swing.render.on.graphics"/>
     <search.traverseUiHelper implementation="com.intellij.platform.compose.ComposeTraverseUiHelper"/>
+
+    <applicationActivity implementation="com.intellij.platform.compose.SkikoPreloader"/>
   </extensions>
 
   <dependencies>

platform/compose/src/com/intellij/platform/compose/SkikoPreloader.kt

@@ -0,0 +1,25 @@
+// Copyright 2000-2025 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license.
+package com.intellij.platform.compose
+
+import com.intellij.ide.ApplicationActivity
+import com.intellij.openapi.diagnostic.thisLogger
+import com.intellij.platform.diagnostic.telemetry.Scope
+import com.intellij.platform.diagnostic.telemetry.TelemetryManager
+import kotlinx.coroutines.withContext
+import org.jetbrains.jewel.bridge.setSkikoLibraryPath
+import org.jetbrains.skiko.Library
+
+// org.jetbrains.skiko.Library.load seems expensive, better have it loaded before the first rendering happens
+internal class SkikoPreloader : ApplicationActivity {
+  private val SKIKO: Scope = Scope("skiko")
+
+  override suspend fun execute() {
+    val tracer = TelemetryManager.getInstance().getSimpleTracer(SKIKO)
+    withContext(tracer.span("org.jetbrains.skiko.Library.load")) {
+      thisLogger().debug("Preloading Skiko")
+
+      setSkikoLibraryPath()
+      Library.load()
+    }
+  }
+}

platform/jewel/ide-laf-bridge/src/main/kotlin/org/jetbrains/jewel/bridge/JewelComposePanelWrapper.kt

@@ -193,10 +193,8 @@ public fun JewelComposeNoThemePanel(
 public fun JewelComposeNoThemePanel(config: ComposePanel.() -> Unit = {}, content: @Composable () -> Unit): JComponent =
     JewelComposeNoThemePanel(focusOnClickInside = false, config, content)
 
-private fun createJewelComposePanel(
-    focusOnClickInside: Boolean,
-    config: ComposePanel.(JewelComposePanelWrapper) -> Unit,
-): JewelComposePanelWrapper {
+@ApiStatus.Internal
+public fun setSkikoLibraryPath() {
     if (System.getProperty("skiko.library.path") == null) {
         val bundledSkikoFolder = File(PathManager.getLibPath(), "/skiko-awt-runtime-all")
         if (bundledSkikoFolder.isDirectory && bundledSkikoFolder.canRead()) {
@@ -205,6 +203,14 @@ private fun createJewelComposePanel(
             JewelLogger.getInstance("SkikoLoader").warn("Bundled Skiko not found/not readable, falling back to default")
         }
     }
+}
+
+private fun createJewelComposePanel(
+    focusOnClickInside: Boolean,
+    config: ComposePanel.(JewelComposePanelWrapper) -> Unit,
+): JewelComposePanelWrapper {
+    setSkikoLibraryPath()
+
     val jewelPanel = JewelComposePanelWrapper(focusOnClickInside)
     jewelPanel.composePanel.config(jewelPanel)
     ComposeUiInspector(jewelPanel)