Try to fix images with preview in tooling (#1458)

Maybe it will fix #1160
Fix for refactored Paragraph.getHorizontalPosition (#115)

gradle-plugins/preview-rpc/src/main/kotlin/org/jetbrains/compose/desktop/ui/tooling/preview/rpc/RemotePreviewHost.kt

@@ -7,16 +7,12 @@ package org.jetbrains.compose.desktop.ui.tooling.preview.rpc
 
 import java.io.File
 import java.lang.RuntimeException
-import java.lang.reflect.Method
 import java.net.SocketTimeoutException
 import java.net.URLClassLoader
 import java.util.concurrent.atomic.AtomicReference
 import kotlin.concurrent.thread
 import kotlin.system.exitProcess
 import kotlin.system.measureTimeMillis
-import kotlin.time.DurationUnit
-import kotlin.time.ExperimentalTime
-import kotlin.time.measureTimedValue
 
 val PREVIEW_HOST_CLASS_NAME: String
     get() = PreviewHost::class.java.canonicalName
@@ -111,6 +107,20 @@ internal class PreviewHost(private val log: PreviewLogger, connection: RemoteCon
         request: FrameRequest
     ): ByteArray {
         val classloader = classloaderProvider.getClassloader(classpath)
+        val thread = Thread.currentThread()
+        val prevContextClassloader = thread.contextClassLoader
+        thread.contextClassLoader = classloader
+        return try {
+            renderFrame(classloader, request)
+        } finally {
+            thread.contextClassLoader = prevContextClassloader
+        }
+    }
+
+    private fun renderFrame(
+        classloader: ClassLoader,
+        request: FrameRequest
+    ): ByteArray {
         val previewFacade = classloader.loadClass(PREVIEW_FACADE_CLASS_NAME)
         val renderArgsClasses = arrayOf(
             String::class.java,

idea-plugin/examples/simple-preview-example/build.gradle.kts

@@ -6,9 +6,9 @@ buildscript {
     }
     dependencies {
         // __LATEST_COMPOSE_RELEASE_VERSION__
-        classpath("org.jetbrains.compose:compose-gradle-plugin:1.0.0-alpha1")
+        classpath("org.jetbrains.compose:compose-gradle-plugin:0.0.9-preview-images")
         // __KOTLIN_COMPOSE_VERSION__
-        classpath(kotlin("gradle-plugin", version = "1.5.21"))
+        classpath(kotlin("gradle-plugin", version = "1.5.31"))
     }
 }
 

idea-plugin/examples/simple-preview-example/pure-jvm/build.gradle.kts

@@ -7,4 +7,8 @@ plugins {
 
 dependencies {
     implementation(compose.desktop.currentOs)
+}
+
+compose.desktop.application {
+    mainClass = "PreviewKt"
 }

idea-plugin/examples/simple-preview-example/pure-jvm/src/main/kotlin/preview.kt

@@ -1,16 +1,38 @@
-import androidx.compose.material.Text
-import androidx.compose.material.Button
-import androidx.compose.runtime.*
 import androidx.compose.desktop.ui.tooling.preview.Preview
+import androidx.compose.foundation.Image
+import androidx.compose.foundation.layout.*
+import androidx.compose.material.*
+import androidx.compose.runtime.*
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.res.painterResource
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.window.singleWindowApplication
 
 @Preview
 @Composable
 fun ExamplePreview() {
     var text by remember { mutableStateOf("Hello, World!") }
-
-    Button(onClick = {
-        text = "Hello, Desktop!"
-    }) {
-        Text(text)
+    val buttonColors = ButtonDefaults.buttonColors(
+        backgroundColor = Color.Blue,
+        contentColor = Color.White
+    )
+    Button(
+        colors = buttonColors,
+        modifier = Modifier.padding(5.dp),
+        onClick = { text = "Hello, Desktop!" }
+    ) {
+        Row {
+            Image(
+                painterResource("compose-logo-white.png"),
+                "compose-logo",
+                modifier = Modifier.height(32.dp).width(32.dp),
+            )
+            Text(text, modifier = Modifier.padding(top = 8.dp, start = 5.dp))
+        }
     }
+}
+
+fun main() = singleWindowApplication {
+    ExamplePreview()
 }