Welcome screen implementation

app/src/processing/app/Base.java

@@ -375,13 +375,7 @@ static private void handleWelcomeScreen(Base base) {
     // Needs to be shown after the first editor window opens, so that it
     // shows up on top, and doesn't prevent an editor window from opening.
     if (Preferences.getBoolean("welcome.four.show")) {
-      try {
-        new Welcome(base);
-      } catch (IOException e) {
-        Messages.showTrace("Unwelcoming",
-          "Please report this error to\n" +
-            "https://github.com/processing/processing4/issues", e, false);
-      }
+        PDEWelcomeKt.showWelcomeScreen(base);
     }
   }
 
@@ -609,7 +603,7 @@ public JMenu initDefaultFileMenu() {
     defaultFileMenu.add(item);
 
     item = Toolkit.newJMenuItemShift(Language.text("menu.file.examples"), 'O');
-    item.addActionListener(e -> thinkDifferentExamples());
+    item.addActionListener(e -> showExamplesFrame());
     defaultFileMenu.add(item);
 
     return defaultFileMenu;
@@ -1885,7 +1879,7 @@ public void handleRestart() {
 //  }
 
 
-  public void thinkDifferentExamples() {
+  public void showExamplesFrame() {
     nextMode.showExamplesFrame();
   }
 

app/src/processing/app/Messages.kt

@@ -18,13 +18,36 @@
 */
 package processing.app
 
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.padding
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.filled.Error
+import androidx.compose.material.icons.filled.Info
+import androidx.compose.material.icons.filled.Warning
+import androidx.compose.material3.*
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.ExperimentalComposeUiApi
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.awt.ComposeDialog
+import androidx.compose.ui.graphics.RectangleShape
+import androidx.compose.ui.layout.onSizeChanged
+import androidx.compose.ui.platform.LocalDensity
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.unit.DpSize
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.window.Window
+import androidx.compose.ui.window.application
+import androidx.compose.ui.window.rememberWindowState
+import com.formdev.flatlaf.FlatLightLaf
 import processing.app.ui.Toolkit
-import java.awt.EventQueue
+import processing.app.ui.theme.PDETheme
+import java.awt.Dimension
 import java.awt.Frame
 import java.io.PrintWriter
 import java.io.StringWriter
-import javax.swing.JFrame
 import javax.swing.JOptionPane
+import javax.swing.UIManager
+
 
 class Messages {
     companion object {
@@ -37,10 +60,23 @@ class Messages {
             if (Base.isCommandLine()) {
                 println("$title: $message")
             } else {
-                JOptionPane.showMessageDialog(
-                    Frame(), message, title,
-                    JOptionPane.INFORMATION_MESSAGE
-                )
+                showDialog(title) { modifier, dismiss ->
+                    AlertDialog(
+                        modifier = modifier,
+                        onDismissRequest = {  },
+                        shape = RectangleShape,
+                        icon = { Icon(Icons.Default.Info, contentDescription = "Info!") },
+                        title = { Text(title) },
+                        text = { Text(message) },
+                        confirmButton = {
+                            Button(
+                                onClick = { dismiss() }
+                            ) {
+                                Text("OK")
+                            }
+                        }
+                    )
+                }
             }
         }
 
@@ -57,10 +93,27 @@ class Messages {
             if (Base.isCommandLine()) {
                 println("$title: $message")
             } else {
-                JOptionPane.showMessageDialog(
-                    Frame(), message, title,
-                    JOptionPane.WARNING_MESSAGE
-                )
+                showDialog(title){ modifier, dismiss ->
+                    AlertDialog(
+                        modifier = modifier,
+                        onDismissRequest = {  },
+                        shape = RectangleShape,
+                        icon = { Icon(Icons.Default.Warning, contentDescription = "Alert!") },
+                        iconContentColor = MaterialTheme.colorScheme.tertiary,
+                        title = { Text(title) },
+                        text = { Text(message) },
+                        confirmButton = {
+                            Button(
+                                onClick = { dismiss() },
+                                colors = ButtonDefaults.outlinedButtonColors(
+                                    contentColor = MaterialTheme.colorScheme.tertiary
+                                )
+                            ) {
+                                Text("OK")
+                            }
+                        }
+                    )
+                }
             }
             e?.printStackTrace()
         }
@@ -80,11 +133,30 @@ class Messages {
                 //      proper parsing on the command line. Many have \n in them.
                 println("$title: $primary\n$secondary")
             } else {
-                EventQueue.invokeLater {
-                    JOptionPane.showMessageDialog(
-                        JFrame(),
-                        Toolkit.formatMessage(primary, secondary),
-                        title, JOptionPane.WARNING_MESSAGE
+                showDialog(title){ modifier, dismiss ->
+                    AlertDialog(
+                        modifier = modifier,
+                        onDismissRequest = {  },
+                        shape = RectangleShape,
+                        icon = { Icon(Icons.Default.Warning, contentDescription = "Alert!") },
+                        iconContentColor = MaterialTheme.colorScheme.tertiary,
+                        title = { Text(title) },
+                        text = {
+                            Column {
+                                Text(primary, fontWeight = FontWeight.Bold)
+                                Text(secondary)
+                            }
+                        },
+                        confirmButton = {
+                            Button(
+                                onClick = { dismiss() },
+                                colors = ButtonDefaults.outlinedButtonColors(
+                                    contentColor = MaterialTheme.colorScheme.tertiary
+                                )
+                            ) {
+                                Text("OK")
+                            }
+                        }
                     )
                 }
             }
@@ -102,10 +174,28 @@ class Messages {
             if (Base.isCommandLine()) {
                 System.err.println("$title: $message")
             } else {
-                JOptionPane.showMessageDialog(
-                    Frame(), message, title,
-                    JOptionPane.ERROR_MESSAGE
-                )
+                showDialog(title){ modifier, dismiss ->
+                    AlertDialog(
+                        modifier = modifier,
+                        onDismissRequest = {  },
+                        shape = RectangleShape,
+                        icon = { Icon(Icons.Default.Error, contentDescription = "Alert!") },
+                        iconContentColor = MaterialTheme.colorScheme.error,
+                        title = { Text(title) },
+                        text = { Text(message) },
+                        confirmButton = {
+                            Button(
+                                onClick = { dismiss() },
+                                colors = ButtonDefaults.buttonColors(
+                                    containerColor = MaterialTheme.colorScheme.error,
+                                    contentColor = MaterialTheme.colorScheme.onError
+                                )
+                            ) {
+                                Text("OK")
+                            }
+                        }
+                    )
+                }
             }
             e?.printStackTrace()
             System.exit(1)
@@ -139,6 +229,8 @@ class Messages {
                     if (fatal) JOptionPane.ERROR_MESSAGE else JOptionPane.WARNING_MESSAGE
                 )
 
+
+
                 if (fatal) {
                     System.exit(1)
                 }
@@ -271,6 +363,63 @@ class Messages {
     }
 }
 
+@OptIn(ExperimentalComposeUiApi::class)
+fun showDialog(title: String, content: @Composable (modifier: Modifier,  dismiss: () -> Unit) -> Unit) {
+    ComposeDialog().apply {
+        isModal = true
+        setTitle(title)
+        size = Dimension(400, 400)
+        rootPane.putClientProperty("apple.awt.fullWindowContent", true)
+        rootPane.putClientProperty("apple.awt.transparentTitleBar", true)
+        rootPane.putClientProperty("apple.awt.windowTitleVisible", false);
+
+
+       setContent {
+            PDETheme {
+                val density = LocalDensity.current
+                content(Modifier.onSizeChanged{
+                    size = Dimension((it.width / density.density).toInt(), (it.height / density.density).toInt())
+                    setLocationRelativeTo(null)
+                },::dispose)
+            }
+        }
+        setLocationRelativeTo(null)
+        isVisible = true
+    }
+}
+
+fun main(){
+    val types = mapOf(
+        "message" to { Messages.showMessage("Test Title", "This is a test message.") },
+        "warning" to { Messages.showWarning("Test Warning", "This is a test warning.", Exception("dfdsfjk")) },
+        "trace" to { Messages.showTrace("Test Trace", "This is a test trace.", Exception("Test Exception"), false) },
+        "tiered_warning" to { Messages.showWarningTiered("Test Tiered Warning", "Primary message", "Secondary message", null) },
+        "yes_no" to { Messages.showYesNoQuestion(null, "Test Yes/No", "Do you want to continue?", "Choose yes or no.") },
+        "custom_question" to { Messages.showCustomQuestion(null, "Test Custom Question", "Choose an option:", "Select one of the options below.", 1, "Option 1", "Option 2", "Option 3") },
+        "error" to { Messages.showError("Test Error", "This is a test error.", null) },
+    )
+    Platform.init()
+    UIManager.setLookAndFeel(FlatLightLaf())
+    application {
+        val state = rememberWindowState(
+            size = DpSize(500.dp, 300.dp)
+        )
+        Window(state = state, onCloseRequest = ::exitApplication, title = "Test Messages") {
+            PDETheme {
+                Column {
+                    for ((type, action) in types) {
+                        Button(onClick = { action() }, modifier = Modifier.padding(8.dp)) {
+                            Text("Show $type dialog")
+                        }
+                    }
+                }
+            }
+        }
+
+    }
+
+}
+
 // Helper functions to give the base classes a color
 fun String.formatClassName() = this
     .replace("processing.", "")