TabbedPane: support per component tab height

CHANGELOG.md

@@ -21,6 +21,8 @@ FlatLaf Change Log
 - ToggleButton: No longer use focus width for tab-style toggle buttons to
   compute component size, which reduces/fixes component size in "Flat IntelliJ"
   and "Flat Darcula" themes.
+- TabbedPane: Support per component tab height (set client property
+  `JTabbedPane.tabHeight` to an integer).
 
 
 ## 0.24

flatlaf-core/src/main/java/com/formdev/flatlaf/FlatClientProperties.java

@@ -117,6 +117,14 @@ public interface FlatClientProperties
 	 */
 	String TABBED_PANE_HAS_FULL_BORDER = "JTabbedPane.hasFullBorder";
 
+	/**
+	 * Specifies the height of a tab.
+	 * <p>
+	 * <strong>Component</strong> {@link javax.swing.JTabbedPane}<br>
+	 * <strong>Value type</strong> {@link java.lang.Integer}
+	 */
+	String TABBED_PANE_TAB_HEIGHT = "JTabbedPane.tabHeight";
+
 	/**
 	 * Placeholder text that is only painted if the text field is empty.
 	 * <p>

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatTabbedPaneUI.java

@@ -169,6 +169,7 @@ public class FlatTabbedPaneUI
 				switch( e.getPropertyName() ) {
 					case TABBED_PANE_SHOW_TAB_SEPARATORS:
 					case TABBED_PANE_HAS_FULL_BORDER:
+					case TABBED_PANE_TAB_HEIGHT:
 						tabPane.revalidate();
 						tabPane.repaint();
 						break;
@@ -215,6 +216,7 @@ public class FlatTabbedPaneUI
 
 	@Override
 	protected int calculateTabHeight( int tabPlacement, int tabIndex, int fontHeight ) {
+		int tabHeight = clientPropertyInt( tabPane, TABBED_PANE_TAB_HEIGHT, this.tabHeight );
 		return Math.max( tabHeight, super.calculateTabHeight( tabPlacement, tabIndex, fontHeight ) - 2 /* was added by superclass */ );
 	}