PasswordField: Caps lock icon no longer painted over long text (issue #172)

CHANGELOG.md

@@ -35,6 +35,7 @@ FlatLaf Change Log
   non-opaque. (issue #349)
 - OptionPane: Align wrapped lines to the right if component orientation is
   right-to-left. (issue #350)
+- PasswordField: Caps lock icon no longer painted over long text. (issue #172)
 - Window decorations: Window title bar width is no longer considered when
   calculating preferred/minimum width of window. (issue #351)
 

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

@@ -24,6 +24,7 @@ import java.awt.event.FocusEvent;
 import java.awt.event.MouseEvent;
 import javax.swing.JFormattedTextField;
 import javax.swing.plaf.UIResource;
+import javax.swing.text.BadLocationException;
 import javax.swing.text.DefaultCaret;
 import javax.swing.text.Document;
 import javax.swing.text.JTextComponent;
@@ -142,4 +143,23 @@ public class FlatCaret
 			moveDot( doc.getLength() );
 		}
 	}
+
+	/**
+	 * @since 1.4
+	 */
+	public void scrollCaretToVisible() {
+		JTextComponent c = getComponent();
+		if( c == null || c.getUI() == null )
+			return;
+
+		try {
+			Rectangle loc = c.getUI().modelToView( c, getDot(), getDotBias() );
+			if( loc != null ) {
+				adjustVisibility( loc );
+				damage( loc );
+			}
+		} catch( BadLocationException ex ) {
+			// ignore
+		}
+	}
 }

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

@@ -17,6 +17,7 @@
 package com.formdev.flatlaf.ui;
 
 import java.awt.Graphics;
+import java.awt.Insets;
 import java.awt.Shape;
 import java.awt.Toolkit;
 import java.awt.event.KeyAdapter;
@@ -123,8 +124,10 @@ public class FlatPasswordFieldUI
 				repaint( e );
 			}
 			private void repaint( KeyEvent e ) {
-				if( e.getKeyCode() == KeyEvent.VK_CAPS_LOCK )
+				if( e.getKeyCode() == KeyEvent.VK_CAPS_LOCK ) {
 					e.getComponent().repaint();
+					scrollCaretToVisible();
+				}
 			}
 		};
 
@@ -169,16 +172,36 @@ public class FlatPasswordFieldUI
 	}
 
 	protected void paintCapsLock( Graphics g ) {
-		if( !showCapsLock )
+		if( !isCapsLockVisible() )
 			return;
 
 		JTextComponent c = getComponent();
-		if( !FlatUIUtils.isPermanentFocusOwner( c ) ||
-			!Toolkit.getDefaultToolkit().getLockingKeyState( KeyEvent.VK_CAPS_LOCK ) )
-		  return;
-
 		int y = (c.getHeight() - capsLockIcon.getIconHeight()) / 2;
 		int x = c.getWidth() - capsLockIcon.getIconWidth() - y;
 		capsLockIcon.paintIcon( c, g, x, y );
 	}
+
+	/**
+	 * @since 1.4
+	 */
+	protected boolean isCapsLockVisible() {
+		if( !showCapsLock )
+			return false;
+
+		JTextComponent c = getComponent();
+		return FlatUIUtils.isPermanentFocusOwner( c ) &&
+			Toolkit.getDefaultToolkit().getLockingKeyState( KeyEvent.VK_CAPS_LOCK );
+	}
+
+	/**
+	 * @since 1.4
+	 */
+	@Override
+	protected Insets getPadding() {
+		Insets padding = super.getPadding();
+		if( !isCapsLockVisible() )
+			return padding;
+
+		return FlatUIUtils.addInsets( padding, new Insets( 0, 0, 0, capsLockIcon.getIconWidth() ) );
+	}
 }

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

@@ -290,4 +290,13 @@ public class FlatTextFieldUI
 		Object padding = getComponent().getClientProperty( FlatClientProperties.TEXT_FIELD_PADDING );
 		return (padding instanceof Insets) ? UIScale.scale( (Insets) padding ) : null;
 	}
+
+	/**
+	 * @since 1.4
+	 */
+	protected void scrollCaretToVisible() {
+		Caret caret = getComponent().getCaret();
+		if( caret instanceof FlatCaret )
+			((FlatCaret)caret).scrollCaretToVisible();
+	}
 }

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

@@ -94,6 +94,11 @@ public class FlatUIUtils
 	}
 
 	public static Insets addInsets( Insets insets1, Insets insets2 ) {
+		if( insets1 == null )
+			return insets2;
+		if( insets2 == null )
+			return insets1;
+
 		return new Insets(
 			insets1.top + insets2.top,
 			insets1.left + insets2.left,