ScrollBar:

- added `ScrollBar.minimumButtonSize` to specify minimum scroll arrow button size
- center and scale arrows in scroll up/down buttons

(issue #493)

flatlaf-testing/src/main/java/com/formdev/flatlaf/testing/FlatPaintingTest.java

@@ -673,7 +673,7 @@ public class FlatPaintingTest
 					panel5.add(arrowSizeLabel, "cell 0 2");
 
 					//---- arrowSizeSpinner ----
-					arrowSizeSpinner.setModel(new SpinnerNumberModel(8, 2, null, 1));
+					arrowSizeSpinner.setModel(new SpinnerNumberModel(9, 2, null, 1));
 					arrowSizeSpinner.addChangeListener(e -> arrowSizeChanged());
 					panel5.add(arrowSizeSpinner, "cell 1 2");
 

flatlaf-testing/src/main/java/com/formdev/flatlaf/testing/FlatPaintingTest.jfd

@@ -564,7 +564,7 @@ new FormModel {
 							name: "arrowSizeSpinner"
 							"model": new javax.swing.SpinnerNumberModel {
 								minimum: 2
-								value: 8
+								value: 9
 							}
 							auxiliary() {
 								"JavaCodeGenerator.variableLocal": false