reducing TriggerImage startup glitches

java_console/ui/src/main/java/com/rusefi/TriggerImage.java

@@ -126,21 +126,23 @@ public class TriggerImage {
         };
 
         JPanel topPanel = new JPanel(new FlowLayout());
+
+        SwingUtilities.invokeAndWait(() -> {
             content.add(topPanel, BorderLayout.NORTH);
             content.add(triggerPanel, BorderLayout.CENTER);
 
             f.showFrame(content);
             f.getFrame().setSize(900, 700);
 
-        SwingUtilities.invokeAndWait(new Runnable() {
-            @Override
-            public void run() {
+            UiUtils.trueRepaint(content);
+        });
+
+        SwingUtilities.invokeAndWait(() -> {
             try {
                 generateImages(workingFolder, triggerPanel, topPanel, content);
             } catch (IOException e) {
                 throw new IllegalStateException(e);
             }
-            }
         });
         Thread.sleep(1000 * sleepAtEnd);
         System.exit(-1);