AnimatedPainter:

- renamed `getValues()` to `getAnimatableValues()`
- renamed `getClientPropertyKey()` to `getAnimationClientPropertyKey()`
- AnimatedPainterSupport improvements

flatlaf-core/src/main/java/com/formdev/flatlaf/icons/FlatAbstractIcon.java

@@ -69,7 +69,13 @@ public abstract class FlatAbstractIcon
 		}
 	}
 
-	protected abstract void paintIcon( Component c, Graphics2D g2 );
+	/**
+	 * Paint the icon at {@code [0,0]} location.
+	 * <p>
+	 * The given graphics context is scaled.
+	 * Use unscaled coordinates, width and height for painting.
+	 */
+	protected abstract void paintIcon( Component c, Graphics2D g );
 
 	@Override
 	public int getIconWidth() {

flatlaf-core/src/main/java/com/formdev/flatlaf/icons/FlatAnimatedIcon.java

@@ -21,6 +21,7 @@ import java.awt.Component;
 import java.awt.Graphics;
 import java.awt.Graphics2D;
 import com.formdev.flatlaf.util.AnimatedIcon;
+import com.formdev.flatlaf.util.AnimatedPainter;
 
 /**
  * Base class for animated icons that scales width and height, creates and initializes
@@ -30,7 +31,7 @@ import com.formdev.flatlaf.util.AnimatedIcon;
  * <p>
  * This class does not store any state information (needed for animation) in its instance.
  * Instead a client property is set on the painted component.
- * This makes it possible to use a share icon instance for multiple components.
+ * This makes it possible to use a shared icon instance for multiple components.
  *
  * @author Karl Tauber
  */
@@ -45,11 +46,34 @@ public abstract class FlatAnimatedIcon
 	@Override
 	public void paintIcon( Component c, Graphics g, int x, int y ) {
 		super.paintIcon( c, g, x, y );
-		AnimatedIcon.AnimationSupport.saveIconLocation( this, c, x, y );
+		AnimatedPainter.saveRepaintLocation( this, c, x, y );
 	}
 
 	@Override
 	protected void paintIcon( Component c, Graphics2D g ) {
-		AnimatedIcon.AnimationSupport.paintIcon( this, c, g, 0, 0 );
+		paintWithAnimation( c, g, 0, 0, getIconWidth(), getIconHeight() );
 	}
+
+	/**
+	 * Delegates painting to {@link #paintIconAnimated(Component, Graphics2D, float[])}.
+	 * Ignores the given bounds because {@code [x,y]} are always {@code [0,0]} and
+	 * {@code [width,height]} are scaled, but painting code should use unscaled width
+	 * and height because given graphics context is scaled.
+	 *
+	 * @since 2
+	 */
+	@Override
+	public void paintAnimated( Component c, Graphics2D g, int x, int y, int width, int height, float[] animatedValues ) {
+		paintIconAnimated( c, g, animatedValues );
+	}
+
+	/**
+	 * Paint the icon at {@code 0,0} location.
+	 * <p>
+	 * The given graphics context is scaled.
+	 * Use unscaled coordinates, width and height for painting.
+	 *
+	 * @since 2
+	 */
+	protected abstract void paintIconAnimated( Component c, Graphics2D g, float[] animatedValues );
 }

flatlaf-core/src/main/java/com/formdev/flatlaf/util/AnimatedBorder.java

@@ -0,0 +1,83 @@
+/*
+ * Copyright 2021 FormDev Software GmbH
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.formdev.flatlaf.util;
+
+import java.awt.Component;
+import java.awt.Graphics;
+import java.awt.Graphics2D;
+import javax.swing.JComponent;
+import javax.swing.border.Border;
+
+/**
+ * Border that automatically animates painting on component value changes.
+ * <p>
+ * {@link #getAnimatableValues(Component)} returns the animatable value(s) of the component.
+ * If the value(s) have changed, then {@link #paintAnimated(Component, Graphics2D, int, int, int, int, float[])}
+ * is invoked multiple times with animated value(s) (from old value(s) to new value(s)).
+ * If {@link #getAnimatableValues(Component)} returns multiple values, then each value
+ * gets its own independent animation, which may start/end at different points in time,
+ * may have different duration, resolution and interpolator.
+ * <p>
+ * Example for an animated border:
+ * <pre>
+ * private class MyAnimatedBorder
+ *     implements AnimatedBorder
+ * {
+ *     &#64;Override
+ *     public float[] getAnimatableValues( Component c ) {
+ *         return new float[] { c.isFocusOwner() ? 1 : 0 };
+ *     }
+ *
+ *     &#64;Override
+ *     public void paintAnimated( Component c, Graphics2D g, int x, int y, int width, int height, float[] animatedValues ) {
+ *         int lh = UIScale.scale( 2 );
+ *
+ *         g.setColor( Color.blue );
+ *         g.fillRect( x, y + height - lh, Math.round( width * animatedValues[0] ), lh );
+ *     }
+ *
+ *     &#64;Override
+ *     public Insets getBorderInsets( Component c ) {
+ *         return UIScale.scale( new Insets( 4, 4, 4, 4 ) );
+ *     }
+ *
+ *     &#64;Override public boolean isBorderOpaque() { return false; }
+ * }
+ *
+ * // sample usage
+ * JTextField textField = new JTextField();
+ * textField.setBorder( new MyAnimatedBorder() );
+ * </pre>
+ *
+ * Animation works only if the component passed to {@link #paintBorder(Component, Graphics, int, int, int, int)}
+ * is a instance of {@link JComponent}.
+ * A client property is set on the component to store the animation state.
+ *
+ * @author Karl Tauber
+ * @since 2
+ */
+public interface AnimatedBorder
+	extends Border, AnimatedPainter
+{
+	/**
+	 * Invokes {@link #paintWithAnimation(Component, Graphics, int, int, int, int)}.
+	 */
+	@Override
+	default void paintBorder( Component c, Graphics g, int x, int y, int width, int height ) {
+		paintWithAnimation( c, g, x, y, width, height );
+	}
+}

flatlaf-core/src/main/java/com/formdev/flatlaf/util/AnimatedIcon.java

@@ -18,62 +18,87 @@ package com.formdev.flatlaf.util;
 
 import java.awt.Component;
 import java.awt.Graphics;
+import java.awt.Graphics2D;
 import javax.swing.Icon;
 import javax.swing.JComponent;
-import com.formdev.flatlaf.util.Animator.Interpolator;
 
 /**
  * Icon that automatically animates painting on component value changes.
  * <p>
- * {@link #getValue(Component)} returns the value of the component.
- * If the value changes, then {@link #paintIconAnimated(Component, Graphics, int, int, float)}
- * is invoked multiple times with animated value (from old value to new value).
+ * {@link #getAnimatableValues(Component)} returns the animatable value(s) of the component.
+ * If the value(s) have changed, then {@link #paintAnimated(Component, Graphics2D, int, int, int, int, float[])}
+ * is invoked multiple times with animated value(s) (from old value(s) to new value(s)).
+ * If {@link #getAnimatableValues(Component)} returns multiple values, then each value
+ * gets its own independent animation, which may start/end at different points in time,
+ * may have different duration, resolution and interpolator.
  * <p>
  * Example for an animated icon:
  * <pre>
- * private class AnimatedMinimalTestIcon
+ * private class MyAnimatedIcon
  *     implements AnimatedIcon
  * {
+ *     &#64;Override
+ *     public float[] getAnimatableValues( Component c ) {
+ *         return new float[] { ((AbstractButton)c).isSelected() ? 1 : 0 };
+ *     }
+ *
  *     &#64;Override public int getIconWidth() { return 100; }
  *     &#64;Override public int getIconHeight() { return 20; }
  *
  *     &#64;Override
- *     public void paintIconAnimated( Component c, Graphics g, int x, int y, float animatedValue ) {
- *         int w = getIconWidth();
- *         int h = getIconHeight();
- *
+ *     public void paintAnimated( Component c, Graphics2D g, int x, int y, int width, int height, float[] animatedValues ) {
  *         g.setColor( Color.red );
- *         g.drawRect( x, y, w - 1, h - 1 );
- *         g.fillRect( x, y, Math.round( w * animatedValue ), h );
- *     }
- *
- *     &#64;Override
- *     public float getValue( Component c ) {
- *         return ((AbstractButton)c).isSelected() ? 1 : 0;
+ *         g.drawRect( x, y, width - 1, height - 1 );
+ *         g.fillRect( x, y, Math.round( width * animatedValues[0] ), height );
  *     }
  * }
  *
  * // sample usage
  * JCheckBox checkBox = new JCheckBox( "test" );
- * checkBox.setIcon( new AnimatedMinimalTestIcon() );
+ * checkBox.setIcon( new MyAnimatedIcon() );
  * </pre>
  *
  * Animation works only if the component passed to {@link #paintIcon(Component, Graphics, int, int)}
- * is a instance of {@link JComponent}.
+ * is an instance of {@link JComponent}.
  * A client property is set on the component to store the animation state.
  *
  * @author Karl Tauber
  */
 public interface AnimatedIcon
-	extends Icon
+	extends Icon, AnimatedPainter
 {
+	/**
+	 * {@inheritDoc}
+	 *
+	 * @since 2
+	 */
 	@Override
-	public default void paintIcon( Component c, Graphics g, int x, int y ) {
-		AnimationSupport.paintIcon( this, c, g, x, y );
+	default float[] getAnimatableValues( Component c ) {
+		// for compatibility
+		return new float[] { getValue( c ) };
 	}
 
 	/**
-	 * Paints the icon for the given animated value.
+	 * Invokes {@link #paintWithAnimation(Component, Graphics, int, int, int, int)}.
+	 */
+	@Override
+	default void paintIcon( Component c, Graphics g, int x, int y ) {
+		paintWithAnimation( c, g, x, y, getIconWidth(), getIconHeight() );
+	}
+
+	/**
+	 * {@inheritDoc}
+	 *
+	 * @since 2
+	 */
+	@Override
+	default void paintAnimated( Component c, Graphics2D g, int x, int y, int width, int height, float[] animatedValues ) {
+		// for compatibility
+		paintIconAnimated( c, g, x, y, animatedValues[0] );
+	}
+
+	/**
+	 * Paints the icon for the given (animated) value.
 	 *
 	 * @param c the component that this icon belongs to
 	 * @param g the graphics context
@@ -82,52 +107,45 @@ public interface AnimatedIcon
 	 * @param animatedValue the animated value, which is either equal to what {@link #getValue(Component)}
 	 *     returned, or somewhere between the previous value and the latest value
 	 *     that {@link #getValue(Component)} returned
+	 *
+	 * @deprecated override {@link #paintAnimated(Component, Graphics2D, int, int, int, int, float[])} instead
 	 */
-	void paintIconAnimated( Component c, Graphics g, int x, int y, float animatedValue );
+	@Deprecated
+	default void paintIconAnimated( Component c, Graphics g, int x, int y, float animatedValue ) {
+	}
 
 	/**
-	 * Gets the value of the component.
+	 * Gets the animatable value of the component.
 	 * <p>
 	 * This can be any value and depends on the component.
 	 * If the value changes, then this class animates from the old value to the new one.
 	 * <p>
 	 * For a toggle button this could be {@code 0} for off and {@code 1} for on.
+	 *
+	 * @deprecated override {@link #getAnimatableValues(Component)} instead
 	 */
-	float getValue( Component c );
-
-	/**
-	 * Returns whether animation is enabled for this icon (default is {@code true}).
-	 */
-	default boolean isAnimationEnabled() {
-		return true;
+	@Deprecated
+	default float getValue( Component c ) {
+		return 0;
 	}
 
 	/**
-	 * Returns the duration of the animation in milliseconds (default is 150).
+	 * {@inheritDoc}
+	 *
+	 * @since TODO
 	 */
-	default int getAnimationDuration() {
-		return 150;
-	}
-
-	/**
-	 * Returns the resolution of the animation in milliseconds (default is 10).
-	 * Resolution is the amount of time between timing events.
-	 */
-	default int getAnimationResolution() {
-		return 10;
-	}
-
-	/**
-	 * Returns the interpolator for the animation.
-	 * Default is {@link CubicBezierEasing#STANDARD_EASING}.
-	 */
-	default Interpolator getAnimationInterpolator() {
-		return CubicBezierEasing.STANDARD_EASING;
+	@Override
+	default Object getAnimationClientPropertyKey() {
+		// for compatibility
+		return getClientPropertyKey();
 	}
 
 	/**
 	 * Returns the client property key used to store the animation support.
+	 *
+	 * @deprecated override {@link #getAnimationClientPropertyKey()} instead
 	 */
+	@Deprecated
 	default Object getClientPropertyKey() {
 		return getClass();
 	}
@@ -135,115 +153,25 @@ public interface AnimatedIcon
 	//---- class AnimationSupport ---------------------------------------------
 
 	/**
-	 * Animation support class that stores the animation state and implements the animation.
+	 * Animation support.
 	 */
+	@Deprecated
 	class AnimationSupport
 	{
-		private float startValue;
-		private float targetValue;
-		private float animatedValue;
-		private float fraction;
-
-		private Animator animator;
-
-		// last x,y coordinates of the icon needed to repaint while animating
-		private int x;
-		private int y;
-
+		/**
+		 * @deprecated use {@link AnimatedPainter#paintWithAnimation(Component, Graphics, int, int, int, int)} instead
+		 */
+		@Deprecated
 		public static void paintIcon( AnimatedIcon icon, Component c, Graphics g, int x, int y ) {
-			if( !isAnimationEnabled( icon, c ) ) {
-				// paint without animation if animation is disabled or
-				// component is not a JComponent and therefore does not support
-				// client properties, which are required to keep animation state
-				paintIconImpl( icon, c, g, x, y, null );
-				return;
-			}
-
-			JComponent jc = (JComponent) c;
-			Object key = icon.getClientPropertyKey();
-			AnimationSupport as = (AnimationSupport) jc.getClientProperty( key );
-			if( as == null ) {
-				// painted first time --> do not animate, but remember current component value
-				as = new AnimationSupport();
-				as.startValue = as.targetValue = as.animatedValue = icon.getValue( c );
-				as.x = x;
-				as.y = y;
-				jc.putClientProperty( key, as );
-			} else {
-				// get component value
-				float value = icon.getValue( c );
-
-				if( value != as.targetValue ) {
-					// value changed --> (re)start animation
-
-					if( as.animator == null ) {
-						// create animator
-						AnimationSupport as2 = as;
-						as.animator = new Animator( icon.getAnimationDuration(), fraction -> {
-							// check whether component was removed while animation is running
-							if( !c.isDisplayable() ) {
-								as2.animator.stop();
-								return;
-							}
-
-							// compute animated value
-							as2.animatedValue = as2.startValue + ((as2.targetValue - as2.startValue) * fraction);
-							as2.fraction = fraction;
-
-							// repaint icon
-							c.repaint( as2.x, as2.y, icon.getIconWidth(), icon.getIconHeight() );
-						}, () -> {
-							as2.startValue = as2.animatedValue = as2.targetValue;
-							as2.animator = null;
-						} );
-					}
-
-					if( as.animator.isRunning() ) {
-						// if animation is still running, restart it from the current
-						// animated value to the new target value with reduced duration
-						as.animator.cancel();
-						int duration2 = (int) (icon.getAnimationDuration() * as.fraction);
-						if( duration2 > 0 )
-							as.animator.setDuration( duration2 );
-						as.startValue = as.animatedValue;
-					} else {
-						// new animation
-						as.animator.setDuration( icon.getAnimationDuration() );
-						as.animator.setResolution( icon.getAnimationResolution() );
-						as.animator.setInterpolator( icon.getAnimationInterpolator() );
-
-						as.animatedValue = as.startValue;
-					}
-
-					as.targetValue = value;
-					as.animator.start();
-				}
-
-				as.x = x;
-				as.y = y;
-			}
-
-			paintIconImpl( icon, c, g, x, y, as );
-		}
-
-		private static void paintIconImpl( AnimatedIcon icon, Component c, Graphics g, int x, int y, AnimationSupport as ) {
-			float value = (as != null) ? as.animatedValue : icon.getValue( c );
-			icon.paintIconAnimated( c, g, x, y, value );
-		}
-
-		private static boolean isAnimationEnabled( AnimatedIcon icon, Component c ) {
-			return Animator.useAnimation() && icon.isAnimationEnabled() && c instanceof JComponent;
+			AnimatedPainterSupport.paint( icon, c, (Graphics2D) g, x, y, icon.getIconWidth(), icon.getIconHeight() );
 		}
 
+		/**
+		 * @deprecated use {@link AnimatedPainter#saveRepaintLocation(AnimatedPainter, Component, int, int)} instead
+		 */
+		@Deprecated
 		public static void saveIconLocation( AnimatedIcon icon, Component c, int x, int y ) {
-			if( !isAnimationEnabled( icon, c ) )
-				return;
-
-			AnimationSupport as = (AnimationSupport) ((JComponent)c).getClientProperty( icon.getClientPropertyKey() );
-			if( as != null ) {
-				as.x = x;
-				as.y = y;
-			}
+			AnimatedPainterSupport.saveRepaintLocation( icon, c, x, y );
 		}
 	}
 }

flatlaf-core/src/main/java/com/formdev/flatlaf/util/AnimatedPainter.java

@@ -0,0 +1,181 @@
+/*
+ * Copyright 2021 FormDev Software GmbH
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.formdev.flatlaf.util;
+
+import java.awt.Component;
+import java.awt.Graphics;
+import java.awt.Graphics2D;
+import javax.swing.JComponent;
+import com.formdev.flatlaf.util.Animator.Interpolator;
+
+/**
+ * Painter that automatically animates painting on component value(s) changes.
+ * <p>
+ * {@link #getAnimatableValues(Component)} returns the animatable value(s) of the component.
+ * If the value(s) have changed, then {@link #paintAnimated(Component, Graphics2D, int, int, int, int, float[])}
+ * is invoked multiple times with animated value(s) (from old value(s) to new value(s)).
+ * If {@link #getAnimatableValues(Component)} returns multiple values, then each value
+ * gets its own independent animation, which may start/end at different points in time,
+ * may have different duration, resolution and interpolator.
+ * <p>
+ * See {@link AnimatedBorder} or {@link AnimatedIcon} for examples.
+ * <p>
+ * Animation works only if the component passed to {@link #paintWithAnimation(Component, Graphics, int, int, int, int)}
+ * is an instance of {@link JComponent}.
+ * A client property is set on the component to store the animation state.
+ *
+ * @author Karl Tauber
+ * @since 2
+ */
+public interface AnimatedPainter
+{
+	/**
+	 * Gets the animatable value(s) of the component.
+	 * <p>
+	 * This can be any value(s) and depends on the component.
+	 * If the value(s) changes, then this class animates from the old value(s) to the new ones.
+	 * If multiple values are returned, then each value gets its own independent animation.
+	 * <p>
+	 * For a toggle button this could be {@code 0} for off and {@code 1} for on.
+	 * A complex check box could return values for selected, hover, pressed and focused states.
+	 * The painter then can show independent animations for those states.
+	 */
+	float[] getAnimatableValues( Component c );
+
+	/**
+	 * Starts painting.
+	 * Either invokes {@link #paintAnimated(Component, Graphics2D, int, int, int, int, float[])}
+	 * once to paint current value(s) (see {@link #getAnimatableValues(Component)}. Or if value(s) has
+	 * changed, compared to last painting, then it starts an animation and invokes
+	 * {@link #paintAnimated(Component, Graphics2D, int, int, int, int, float[])}
+	 * multiple times with animated value(s) (from old value(s) to new value(s)).
+	 *
+	 * @param c the component that this painter belongs to
+	 * @param g the graphics context
+	 * @param x the x coordinate of the paint area
+	 * @param y the y coordinate of the paint area
+	 * @param width the width of the paint area
+	 * @param height the height of the paint area
+	 */
+	default void paintWithAnimation( Component c, Graphics g, int x, int y, int width, int height ) {
+		AnimatedPainterSupport.paint( this, c, (Graphics2D) g, x, y, width, height );
+	}
+
+	/**
+	 * Paints the given (animated) value(s).
+	 * <p>
+	 * Invoked from {@link #paintWithAnimation(Component, Graphics, int, int, int, int)}.
+	 *
+	 * @param c the component that this painter belongs to
+	 * @param g the graphics context
+	 * @param x the x coordinate of the paint area
+	 * @param y the y coordinate of the paint area
+	 * @param width the width of the paint area
+	 * @param height the height of the paint area
+	 * @param animatedValues the animated values, which are either equal to what {@link #getAnimatableValues(Component)}
+	 *     returned, or somewhere between the previous values and the latest values
+	 *     that {@link #getAnimatableValues(Component)} returned
+	 */
+	void paintAnimated( Component c, Graphics2D g, int x, int y, int width, int height, float[] animatedValues );
+
+	/**
+	 * Invoked from animator to repaint an area.
+	 * <p>
+	 * Useful to limit the repaint region. E.g. if only the bottom border is animated.
+	 * If more than one border side is animated (e.g. bottom and right side), then it
+	 * makes no sense to do separate repaints because the Swing repaint manager unions
+	 * the regions and the whole component is repainted.
+	 * <p>
+	 * The default implementation repaints the whole given area.
+	 */
+	default void repaintDuringAnimation( Component c, int x, int y, int width, int height ) {
+		c.repaint( x, y, width, height );
+	}
+
+	/**
+	 * Returns whether animation is enabled for this painter (default is {@code true}).
+	 */
+	default boolean isAnimationEnabled() {
+		return true;
+	}
+
+	/**
+	 * Returns the duration of the animation in milliseconds (default is 150).
+	 */
+	default int getAnimationDuration() {
+		return 150;
+	}
+
+	/**
+	 * Returns the resolution of the animation in milliseconds (default is 10).
+	 * Resolution is the amount of time between timing events.
+	 */
+	default int getAnimationResolution() {
+		return 10;
+	}
+
+	/**
+	 * Returns the interpolator for the animation.
+	 * Default is {@link CubicBezierEasing#STANDARD_EASING}.
+	 */
+	default Interpolator getAnimationInterpolator() {
+		return CubicBezierEasing.STANDARD_EASING;
+	}
+
+	/**
+	 * Returns the duration of the animation in milliseconds (default is 150)
+	 * for the given value index and value.
+	 */
+	default int getAnimationDuration( int valueIndex, float value ) {
+		return getAnimationDuration();
+	}
+
+	/**
+	 * Returns the resolution of the animation in milliseconds (default is 10)
+	 * for the given value index and value.
+	 * Resolution is the amount of time between timing events.
+	 */
+	default int getAnimationResolution( int valueIndex, float value ) {
+		return getAnimationResolution();
+	}
+
+	/**
+	 * Returns the interpolator for the animation
+	 * for the given value index and value.
+	 * Default is {@link CubicBezierEasing#STANDARD_EASING}.
+	 */
+	default Interpolator getAnimationInterpolator( int valueIndex, float value ) {
+		return getAnimationInterpolator();
+	}
+
+	/**
+	 * Returns the client property key used to store the animation support.
+	 */
+	default Object getAnimationClientPropertyKey() {
+		return getClass();
+	}
+
+	/**
+	 * Saves location for repainting animated area with
+	 * {@link AnimatedPainter#repaintDuringAnimation(Component, int, int, int, int)}.
+	 * Only needed when graphics context passed to {@link #paintWithAnimation(Component, Graphics, int, int, int, int)}
+	 * uses transformed location.
+	 */
+	static void saveRepaintLocation( AnimatedPainter painter, Component c, int x, int y ) {
+		AnimatedPainterSupport.saveRepaintLocation( painter, c, x, y );
+	}
+}

flatlaf-core/src/main/java/com/formdev/flatlaf/util/AnimatedPainterSupport.java

@@ -0,0 +1,185 @@
+/*
+ * Copyright 2021 FormDev Software GmbH
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.formdev.flatlaf.util;
+
+import java.awt.Component;
+import java.awt.Graphics2D;
+import javax.swing.JComponent;
+
+/**
+ * Animation support class that stores the animation state and implements the animation.
+ *
+ * @author Karl Tauber
+ * @since 2
+ */
+class AnimatedPainterSupport
+{
+	private final int valueIndex;
+
+	private float startValue;
+	private float targetValue;
+	private float animatedValue;
+	private float fraction;
+
+	private Animator animator;
+
+	// last bounds of the paint area needed to repaint while animating
+	private int x;
+	private int y;
+	private int width;
+	private int height;
+
+	private AnimatedPainterSupport( int valueIndex ) {
+		this.valueIndex = valueIndex;
+	}
+
+	static void paint( AnimatedPainter painter, Component c, Graphics2D g,
+		int x, int y, int width, int height )
+	{
+		// get animatable component values
+		float[] values = painter.getAnimatableValues( c );
+
+		if( !isAnimationEnabled( painter, c ) ) {
+			// paint without animation if animation is disabled or
+			// component is not a JComponent and therefore does not support
+			// client properties, which are required to keep animation state
+			painter.paintAnimated( c, g, x, y, width, height, values );
+			return;
+		}
+
+		JComponent jc = (JComponent) c;
+		Object key = painter.getAnimationClientPropertyKey();
+		AnimatedPainterSupport[] ass = (AnimatedPainterSupport[]) jc.getClientProperty( key );
+
+		// check whether length of values array has changed
+		if( ass != null && ass.length != values.length ) {
+			// cancel all running animations
+			for( int i = 0; i < ass.length; i++ ) {
+				AnimatedPainterSupport as = ass[i];
+				if( as.animator != null )
+					as.animator.cancel();
+			}
+			ass = null;
+		}
+
+		if( ass == null ) {
+			ass = new AnimatedPainterSupport[values.length];
+			jc.putClientProperty( key, ass );
+		}
+
+		for( int i = 0; i < ass.length; i++ ) {
+			AnimatedPainterSupport as = ass[i];
+			float value = values[i];
+
+			if( as == null ) {
+				// painted first time --> do not animate, but remember current component value
+				as = new AnimatedPainterSupport( i );
+				as.startValue = as.targetValue = as.animatedValue = value;
+				ass[i] = as;
+			} else if( value != as.targetValue ) {
+				// value changed --> (re)start animation
+
+				int animationDuration = painter.getAnimationDuration( as.valueIndex, value );
+
+				// do not animate if animation duration (for current value) is zero
+				if( animationDuration <= 0 ) {
+					if( as.animator != null ) {
+						as.animator.cancel();
+						as.animator = null;
+					}
+					as.startValue = as.targetValue = as.animatedValue = value;
+					as.fraction = 0;
+					continue;
+				}
+
+				if( as.animator == null ) {
+					// create animator
+					AnimatedPainterSupport as2 = as;
+					as.animator = new Animator( 1, fraction -> {
+						// check whether component was removed while animation is running
+						if( !c.isDisplayable() ) {
+							as2.animator.stop();
+							return;
+						}
+
+						// compute animated value
+						as2.animatedValue = as2.startValue + ((as2.targetValue - as2.startValue) * fraction);
+						as2.fraction = fraction;
+
+						// repaint
+						painter.repaintDuringAnimation( c, as2.x, as2.y, as2.width, as2.height );
+					}, () -> {
+						as2.startValue = as2.animatedValue = as2.targetValue;
+						as2.animator = null;
+					} );
+				}
+
+				if( as.animator.isRunning() ) {
+					// if animation is still running, restart it from the current
+					// animated value to the new target value with reduced duration
+					as.animator.cancel();
+					int duration2 = (int) (animationDuration * as.fraction);
+					if( duration2 > 0 )
+						as.animator.setDuration( duration2 );
+					as.startValue = as.animatedValue;
+				} else {
+					// new animation
+					as.animator.setDuration( animationDuration );
+
+					as.animatedValue = as.startValue;
+				}
+
+				// update animator for new value
+				as.animator.setResolution( painter.getAnimationResolution( as.valueIndex, value ) );
+				as.animator.setInterpolator( painter.getAnimationInterpolator( as.valueIndex, value ) );
+
+				// start animation
+				as.targetValue = value;
+				as.animator.start();
+			}
+
+			as.x = x;
+			as.y = y;
+			as.width = width;
+			as.height = height;
+		}
+
+		float[] animatedValues = new float[ass.length];
+		for( int i = 0; i < ass.length; i++ )
+			animatedValues[i] = ass[i].animatedValue;
+
+		painter.paintAnimated( c, g, x, y, width, height, animatedValues );
+	}
+
+	private static boolean isAnimationEnabled( AnimatedPainter painter, Component c ) {
+		return Animator.useAnimation() && painter.isAnimationEnabled() && c instanceof JComponent;
+	}
+
+	static void saveRepaintLocation( AnimatedPainter painter, Component c, int x, int y ) {
+		if( !isAnimationEnabled( painter, c ) )
+			return;
+
+		AnimatedPainterSupport[] ass = (AnimatedPainterSupport[]) ((JComponent)c).getClientProperty( painter.getAnimationClientPropertyKey() );
+		if( ass != null ) {
+			for( int i = 0; i < ass.length; i++ ) {
+				AnimatedPainterSupport as = ass[i];
+				as.x = x;
+				as.y = y;
+			}
+		}
+	}
+}

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

@@ -0,0 +1,438 @@
+/*
+ * Copyright 2021 FormDev Software GmbH
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.formdev.flatlaf.testing;
+
+import java.awt.Color;
+import java.awt.Component;
+import java.awt.FontMetrics;
+import java.awt.Graphics;
+import java.awt.Graphics2D;
+import java.awt.Insets;
+import java.awt.geom.Rectangle2D;
+import javax.swing.*;
+import javax.swing.border.AbstractBorder;
+import com.formdev.flatlaf.FlatClientProperties;
+import com.formdev.flatlaf.ui.FlatUIUtils;
+import com.formdev.flatlaf.util.AnimatedBorder;
+import com.formdev.flatlaf.util.ColorFunctions;
+import com.formdev.flatlaf.util.HiDPIUtils;
+import com.formdev.flatlaf.util.UIScale;
+import net.miginfocom.swing.*;
+
+/**
+ * @author Karl Tauber
+ */
+public class FlatAnimatedBorderTest
+	extends FlatTestPanel
+{
+	private static final Color CHART_FADE_1 = Color.blue;
+	private static final Color CHART_FADE_2 = Color.red;
+	private static final Color CHART_MATERIAL_1 = Color.green;
+	private static final Color CHART_MATERIAL_2 = Color.magenta;
+	private static final Color CHART_MATERIAL_3 = Color.pink;
+	private static final Color CHART_MATERIAL_4 = Color.cyan;
+	private static final Color CHART_MINIMAL = Color.orange;
+
+	private static final String CHART_COLOR_KEY = "chartColor";
+
+	public static void main( String[] args ) {
+		SwingUtilities.invokeLater( () -> {
+			FlatTestFrame frame = FlatTestFrame.create( args, "FlatAnimatedBorderTest" );
+			frame.showFrame( FlatAnimatedBorderTest::new );
+		} );
+	}
+
+	FlatAnimatedBorderTest() {
+		initComponents();
+
+		fade1TextField.setBorder( new AnimatedFocusFadeBorder() );
+		fade2TextField.setBorder( new AnimatedFocusFadeBorder() );
+
+		material1TextField.setBorder( new AnimatedMaterialBorder() );
+		material2TextField.setBorder( new AnimatedMaterialBorder() );
+		material3TextField.setBorder( new AnimatedMaterialLabeledBorder() );
+		material4TextField.setBorder( new AnimatedMaterialLabeledBorder() );
+
+		minimalTextField.setBorder( new AnimatedMinimalTestBorder() );
+
+		fade1TextField.putClientProperty( CHART_COLOR_KEY, CHART_FADE_1 );
+		fade2TextField.putClientProperty( CHART_COLOR_KEY, CHART_FADE_2 );
+		material1TextField.putClientProperty( CHART_COLOR_KEY, CHART_MATERIAL_1 );
+		material2TextField.putClientProperty( CHART_COLOR_KEY, CHART_MATERIAL_2 );
+		material3TextField.putClientProperty( CHART_COLOR_KEY, CHART_MATERIAL_3 );
+		material4TextField.putClientProperty( CHART_COLOR_KEY, CHART_MATERIAL_4 );
+		minimalTextField.putClientProperty( CHART_COLOR_KEY, CHART_MINIMAL );
+
+		fade1ChartColor.setForeground( CHART_FADE_1 );
+		fade2ChartColor.setForeground( CHART_FADE_2 );
+		material1ChartColor.setForeground( CHART_MATERIAL_1 );
+		material2ChartColor.setForeground( CHART_MATERIAL_2 );
+		material3ChartColor.setForeground( CHART_MATERIAL_3 );
+		material4ChartColor.setForeground( CHART_MATERIAL_4 );
+		minimalChartColor.setForeground( CHART_MINIMAL );
+
+		material3TextField.putClientProperty( AnimatedMaterialLabeledBorder.LABEL_TEXT_KEY, "Label" );
+		material4TextField.putClientProperty( AnimatedMaterialLabeledBorder.LABEL_TEXT_KEY, "Label" );
+		material4TextField.setText( "Text" );
+	}
+
+	private void initComponents() {
+		// JFormDesigner - Component initialization - DO NOT MODIFY  //GEN-BEGIN:initComponents
+		label3 = new JLabel();
+		lineChartPanel = new LineChartPanel();
+		fade1TextField = new JTextField();
+		fade1ChartColor = new FlatAnimatorTest.JChartColor();
+		fade2TextField = new JTextField();
+		fade2ChartColor = new FlatAnimatorTest.JChartColor();
+		label2 = new JLabel();
+		material1TextField = new JTextField();
+		material1ChartColor = new FlatAnimatorTest.JChartColor();
+		material2TextField = new JTextField();
+		material2ChartColor = new FlatAnimatorTest.JChartColor();
+		material3TextField = new JTextField();
+		material3ChartColor = new FlatAnimatorTest.JChartColor();
+		material4TextField = new JTextField();
+		material4ChartColor = new FlatAnimatorTest.JChartColor();
+		label1 = new JLabel();
+		minimalTextField = new JTextField();
+		minimalChartColor = new FlatAnimatorTest.JChartColor();
+		durationLabel = new JLabel();
+		durationField = new JSpinner();
+
+		//======== this ========
+		setLayout(new MigLayout(
+			"insets dialog,hidemode 3",
+			// columns
+			"[fill]" +
+			"[fill]para" +
+			"[grow,fill]",
+			// rows
+			"[]" +
+			"[]" +
+			"[]para" +
+			"[]" +
+			"[]" +
+			"[]" +
+			"[]" +
+			"[]para" +
+			"[]" +
+			"[]" +
+			"[grow]" +
+			"[]"));
+
+		//---- label3 ----
+		label3.setText("Fade:");
+		add(label3, "cell 0 0");
+		add(lineChartPanel, "cell 2 0 1 12,growy");
+		add(fade1TextField, "cell 0 1");
+		add(fade1ChartColor, "cell 1 1");
+		add(fade2TextField, "cell 0 2");
+		add(fade2ChartColor, "cell 1 2");
+
+		//---- label2 ----
+		label2.setText("Material:");
+		add(label2, "cell 0 3");
+		add(material1TextField, "cell 0 4");
+		add(material1ChartColor, "cell 1 4");
+		add(material2TextField, "cell 0 5");
+		add(material2ChartColor, "cell 1 5");
+
+		//---- material3TextField ----
+		material3TextField.putClientProperty(FlatClientProperties.STYLE_CLASS, "large");
+		add(material3TextField, "cell 0 6");
+		add(material3ChartColor, "cell 1 6");
+
+		//---- material4TextField ----
+		material4TextField.putClientProperty(FlatClientProperties.STYLE_CLASS, "large");
+		add(material4TextField, "cell 0 7");
+		add(material4ChartColor, "cell 1 7");
+
+		//---- label1 ----
+		label1.setText("Minimal:");
+		add(label1, "cell 0 8");
+		add(minimalTextField, "cell 0 9");
+		add(minimalChartColor, "cell 1 9");
+
+		//---- durationLabel ----
+		durationLabel.setText("Duration:");
+		add(durationLabel, "cell 0 11");
+
+		//---- durationField ----
+		durationField.setModel(new SpinnerNumberModel(200, 0, null, 50));
+		add(durationField, "cell 0 11");
+		// JFormDesigner - End of component initialization  //GEN-END:initComponents
+	}
+
+	// JFormDesigner - Variables declaration - DO NOT MODIFY  //GEN-BEGIN:variables
+	private JLabel label3;
+	private LineChartPanel lineChartPanel;
+	private JTextField fade1TextField;
+	private FlatAnimatorTest.JChartColor fade1ChartColor;
+	private JTextField fade2TextField;
+	private FlatAnimatorTest.JChartColor fade2ChartColor;
+	private JLabel label2;
+	private JTextField material1TextField;
+	private FlatAnimatorTest.JChartColor material1ChartColor;
+	private JTextField material2TextField;
+	private FlatAnimatorTest.JChartColor material2ChartColor;
+	private JTextField material3TextField;
+	private FlatAnimatorTest.JChartColor material3ChartColor;
+	private JTextField material4TextField;
+	private FlatAnimatorTest.JChartColor material4ChartColor;
+	private JLabel label1;
+	private JTextField minimalTextField;
+	private FlatAnimatorTest.JChartColor minimalChartColor;
+	private JLabel durationLabel;
+	private JSpinner durationField;
+	// JFormDesigner - End of variables declaration  //GEN-END:variables
+
+	//---- class AnimatedMaterialBorder ---------------------------------------
+
+	/**
+	 * Experimental text field border that:
+	 * - animates focus indicator color and border width
+	 */
+	private class AnimatedFocusFadeBorder
+		extends AbstractBorder
+		implements AnimatedBorder
+	{
+		// needed because otherwise the empty paint method in superclass
+		// javax.swing.border.AbstractBorder would be used
+		@Override
+		public void paintBorder( Component c, Graphics g, int x, int y, int width, int height ) {
+			paintWithAnimation( c, g, x, y, width, height );
+		}
+
+		@Override
+		public void paintAnimated( Component c, Graphics2D g, int x, int y, int width, int height, float[] animatedValues ) {
+			float animatedValue = animatedValues[0];
+			FlatUIUtils.setRenderingHints( g );
+
+			// border width is 1 if not focused and 2 if focused
+			float lw = UIScale.scale( 1 + animatedValue );
+
+			// paint border
+			Color color = ColorFunctions.mix( Color.red, Color.lightGray, animatedValue );
+			FlatUIUtils.paintOutlinedComponent( g, x, y, width, height, 0, 0, 0, lw, 0,
+				null, color, null );
+
+			if( animatedValue != 0 && animatedValue != 1 ) {
+				Color chartColor = (Color) ((JComponent)c).getClientProperty( CHART_COLOR_KEY );
+				lineChartPanel.addValue( chartColor, animatedValue, Integer.MIN_VALUE, "fade" );
+			}
+		}
+
+		@Override
+		public Insets getBorderInsets( Component c, Insets insets ) {
+			insets.top = insets.bottom = UIScale.scale( 3 );
+			insets.left = insets.right = UIScale.scale( 7 );
+			return insets;
+		}
+
+		@Override
+		public float[] getAnimatableValues( Component c ) {
+			return new float[] { FlatUIUtils.isPermanentFocusOwner( c ) ? 1 : 0 };
+		}
+
+		@Override
+		public int getAnimationDuration() {
+			return (Integer) durationField.getValue();
+		}
+	}
+
+	//---- class AnimatedMaterialBorder ---------------------------------------
+
+	/**
+	 * Experimental text field border that:
+	 * - paint border only at bottom
+	 * - animates focus indicator at bottom
+	 */
+	private class AnimatedMaterialBorder
+		extends AbstractBorder
+		implements AnimatedBorder
+	{
+		// needed because otherwise the empty paint method in superclass
+		// javax.swing.border.AbstractBorder would be used
+		@Override
+		public void paintBorder( Component c, Graphics g, int x, int y, int width, int height ) {
+			paintWithAnimation( c, g, x, y, width, height );
+		}
+
+		@Override
+		public void paintAnimated( Component c, Graphics2D g, int x, int y, int width, int height, float[] animatedValues ) {
+			float animatedValue = animatedValues[0];
+			FlatUIUtils.setRenderingHints( g );
+
+			// use paintAtScale1x() for consistent line thickness when scaled
+			HiDPIUtils.paintAtScale1x( g, x, y, width, height,
+				(g2d, x2, y2, width2, height2, scaleFactor) -> {
+					float lh = (float) (UIScale.scale( 1f ) * scaleFactor);
+
+					g2d.setColor( Color.gray );
+					g2d.fill( new Rectangle2D.Float( x2, y2 + height2 - lh, width2, lh ) );
+
+					if( animatedValue > 0 ) {
+						lh = (float) (UIScale.scale( 2f ) * scaleFactor);
+						int lw = Math.round( width2 * animatedValue );
+
+						g2d.setColor( Color.red );
+						g2d.fill( new Rectangle2D.Float( x2 + (width2 - lw) / 2, y2 + height2 - lh, lw, lh ) );
+					}
+				} );
+
+			if( animatedValue != 0 && animatedValue != 1 ) {
+				Color chartColor = (Color) ((JComponent)c).getClientProperty( CHART_COLOR_KEY );
+				lineChartPanel.addValue( chartColor, animatedValue, Integer.MIN_VALUE, "material" );
+			}
+		}
+
+		@Override
+		public void repaintDuringAnimation( Component c, int x, int y, int width, int height ) {
+			// limit repaint to bottom border
+			int lh = UIScale.scale( 2 );
+			c.repaint( x, y + height - lh, width, lh );
+		}
+
+		@Override
+		public Insets getBorderInsets( Component c, Insets insets ) {
+			insets.top = insets.bottom = UIScale.scale( 3 );
+			insets.left = insets.right = UIScale.scale( 7 );
+			return insets;
+		}
+
+		@Override
+		public float[] getAnimatableValues( Component c ) {
+			return new float[] { FlatUIUtils.isPermanentFocusOwner( c ) ? 1 : 0 };
+		}
+
+		@Override
+		public int getAnimationDuration() {
+			return (Integer) durationField.getValue();
+		}
+	}
+
+	//---- class AnimatedMaterialLabeledBorder --------------------------------
+
+	/**
+	 * Experimental text field border that:
+	 * - paints a label above the text, or in center if text field is empty
+	 * - paint border only at bottom
+	 * - animates focus indicator at bottom
+	 */
+	private class AnimatedMaterialLabeledBorder
+		extends AnimatedMaterialBorder
+	{
+		static final String LABEL_TEXT_KEY = "JTextField.labelText";
+
+		private static final float LABEL_FONT_SCALE = 0.75f;
+
+		@Override
+		public void paintAnimated( Component c, Graphics2D g, int x, int y, int width, int height, float[] animatedValues ) {
+			super.paintAnimated( c, g, x, y, width, height, animatedValues );
+
+			float animatedValue = animatedValues[0];
+			JComponent jc = (JComponent) c;
+			String label = (String) jc.getClientProperty( LABEL_TEXT_KEY );
+			if( label == null )
+				return;
+
+			FontMetrics fm = c.getFontMetrics( c.getFont() );
+			int labelFontHeight = Math.round( fm.getHeight() * LABEL_FONT_SCALE );
+
+			int tx = UIScale.scale( 7 );
+			int ty = y + labelFontHeight - UIScale.scale( 2 );
+			float sf = LABEL_FONT_SCALE;
+
+			if( ((JTextField)c).getDocument().getLength() == 0 ) {
+				// paint label in center of text field if it is empty
+				int ty2 = ((height - fm.getHeight()) / 2) + labelFontHeight;
+				ty += (ty2 - ty) * (1 - animatedValue);
+				sf += (1 - LABEL_FONT_SCALE) * (1 - animatedValue);
+			}
+
+			Graphics2D g2 = (Graphics2D) g.create();
+			try {
+				g2.translate( tx, ty );
+				g2.scale( sf, sf );
+				g2.setColor( ColorFunctions.mix( Color.red, Color.gray, animatedValue ) );
+
+				FlatUIUtils.drawString( jc, g2, label, 0, 0 );
+			} finally {
+				g2.dispose();
+			}
+		}
+
+		@Override
+		public void repaintDuringAnimation( Component c, int x, int y, int width, int height ) {
+			c.repaint( x, y, width, height );
+		}
+
+		@Override
+		public Insets getBorderInsets( Component c, Insets insets ) {
+			super.getBorderInsets( c, insets );
+
+			FontMetrics fm = c.getFontMetrics( c.getFont() );
+			int labelFontHeight = Math.round( fm.getHeight() * LABEL_FONT_SCALE );
+			insets.top = labelFontHeight;
+			insets.bottom = UIScale.scale( 5 );
+			return insets;
+		}
+	}
+
+	//---- class AnimatedMinimalTestBorder ------------------------------------
+
+	/**
+	 * Minimal example for an animated border.
+	 */
+	private class AnimatedMinimalTestBorder
+		implements AnimatedBorder
+	{
+		@Override
+		public void paintAnimated( Component c, Graphics2D g, int x, int y, int width, int height, float[] animatedValues ) {
+			float animatedValue = animatedValues[0];
+			int lh = UIScale.scale( 2 );
+
+			g.setColor( Color.blue );
+			g.fillRect( x, y + height - lh, Math.round( width * animatedValue ), lh );
+
+			if( animatedValue != 0 && animatedValue != 1 ) {
+				Color chartColor = (Color) ((JComponent)c).getClientProperty( CHART_COLOR_KEY );
+				lineChartPanel.addValue( chartColor, animatedValue, Integer.MIN_VALUE, "minimal" );
+			}
+		}
+
+		@Override
+		public float[] getAnimatableValues( Component c ) {
+			return new float[] { FlatUIUtils.isPermanentFocusOwner( c ) ? 1 : 0 };
+		}
+
+		@Override
+		public int getAnimationDuration() {
+			return (Integer) durationField.getValue();
+		}
+
+		@Override
+		public Insets getBorderInsets( Component c ) {
+			return UIScale.scale( new Insets( 3, 7, 3, 7 ) );
+		}
+
+		@Override
+		public boolean isBorderOpaque() {
+			return false;
+		}
+	}
+}

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

@@ -0,0 +1,128 @@
+JFDML JFormDesigner: "8.3" encoding: "UTF-8"
+
+new FormModel {
+	contentType: "form/swing"
+	root: new FormRoot {
+		add( new FormContainer( "com.formdev.flatlaf.testing.FlatTestPanel", new FormLayoutManager( class net.miginfocom.swing.MigLayout ) {
+			"$layoutConstraints": "insets dialog,hidemode 3"
+			"$columnConstraints": "[fill][fill]para[grow,fill]"
+			"$rowConstraints": "[][][]para[][][][][]para[][][grow][]"
+		} ) {
+			name: "this"
+			add( new FormComponent( "javax.swing.JLabel" ) {
+				name: "label3"
+				"text": "Fade:"
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 0 0"
+			} )
+			add( new FormComponent( "com.formdev.flatlaf.testing.LineChartPanel" ) {
+				name: "lineChartPanel"
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 2 0 1 12,growy"
+			} )
+			add( new FormComponent( "javax.swing.JTextField" ) {
+				name: "fade1TextField"
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 0 1"
+			} )
+			add( new FormComponent( "com.formdev.flatlaf.testing.FlatAnimatorTest$JChartColor" ) {
+				name: "fade1ChartColor"
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 1 1"
+			} )
+			add( new FormComponent( "javax.swing.JTextField" ) {
+				name: "fade2TextField"
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 0 2"
+			} )
+			add( new FormComponent( "com.formdev.flatlaf.testing.FlatAnimatorTest$JChartColor" ) {
+				name: "fade2ChartColor"
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 1 2"
+			} )
+			add( new FormComponent( "javax.swing.JLabel" ) {
+				name: "label2"
+				"text": "Material:"
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 0 3"
+			} )
+			add( new FormComponent( "javax.swing.JTextField" ) {
+				name: "material1TextField"
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 0 4"
+			} )
+			add( new FormComponent( "com.formdev.flatlaf.testing.FlatAnimatorTest$JChartColor" ) {
+				name: "material1ChartColor"
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 1 4"
+			} )
+			add( new FormComponent( "javax.swing.JTextField" ) {
+				name: "material2TextField"
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 0 5"
+			} )
+			add( new FormComponent( "com.formdev.flatlaf.testing.FlatAnimatorTest$JChartColor" ) {
+				name: "material2ChartColor"
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 1 5"
+			} )
+			add( new FormComponent( "javax.swing.JTextField" ) {
+				name: "material3TextField"
+				"$client.FlatLaf.styleClass": "large"
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 0 6"
+			} )
+			add( new FormComponent( "com.formdev.flatlaf.testing.FlatAnimatorTest$JChartColor" ) {
+				name: "material3ChartColor"
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 1 6"
+			} )
+			add( new FormComponent( "javax.swing.JTextField" ) {
+				name: "material4TextField"
+				"$client.FlatLaf.styleClass": "large"
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 0 7"
+			} )
+			add( new FormComponent( "com.formdev.flatlaf.testing.FlatAnimatorTest$JChartColor" ) {
+				name: "material4ChartColor"
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 1 7"
+			} )
+			add( new FormComponent( "javax.swing.JLabel" ) {
+				name: "label1"
+				"text": "Minimal:"
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 0 8"
+			} )
+			add( new FormComponent( "javax.swing.JTextField" ) {
+				name: "minimalTextField"
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 0 9"
+			} )
+			add( new FormComponent( "com.formdev.flatlaf.testing.FlatAnimatorTest$JChartColor" ) {
+				name: "minimalChartColor"
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 1 9"
+			} )
+			add( new FormComponent( "javax.swing.JLabel" ) {
+				name: "durationLabel"
+				"text": "Duration:"
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 0 11"
+			} )
+			add( new FormComponent( "javax.swing.JSpinner" ) {
+				name: "durationField"
+				"model": new javax.swing.SpinnerNumberModel {
+					minimum: 0
+					stepSize: 50
+					value: 200
+				}
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 0 11"
+			} )
+		}, new FormLayoutConstraints( null ) {
+			"location": new java.awt.Point( 0, 0 )
+			"size": new java.awt.Dimension( 725, 465 )
+		} )
+	}
+}

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

@@ -18,13 +18,14 @@ package com.formdev.flatlaf.testing;
 
 import java.awt.Color;
 import java.awt.Component;
-import java.awt.Graphics;
 import java.awt.Graphics2D;
 import java.awt.geom.Ellipse2D;
+import java.awt.geom.Path2D;
 import javax.swing.*;
 import com.formdev.flatlaf.icons.FlatAnimatedIcon;
 import com.formdev.flatlaf.util.AnimatedIcon;
 import com.formdev.flatlaf.util.ColorFunctions;
+import com.formdev.flatlaf.util.UIScale;
 import net.miginfocom.swing.*;
 
 /**
@@ -33,6 +34,15 @@ import net.miginfocom.swing.*;
 public class FlatAnimatedIconTest
 	extends FlatTestPanel
 {
+	private static final Color CHART_RADIO_BUTTON_1 = Color.blue;
+	private static final Color CHART_RADIO_BUTTON_2 = Color.red;
+	private static final Color CHART_RADIO_BUTTON_3 = Color.green;
+	private static final Color CHART_CHECK_BOX_1 = Color.magenta;
+	private static final Color CHART_CHECK_BOX_2 = Color.orange;
+	private static final Color[] CHART_SWITCH_EX = { Color.red, Color.green, Color.blue };
+
+	private static final String CHART_COLOR_KEY = "chartColor";
+
 	public static void main( String[] args ) {
 		SwingUtilities.invokeLater( () -> {
 			FlatTestFrame frame = FlatTestFrame.create( args, "FlatAnimatedIconTest" );
@@ -49,16 +59,36 @@ public class FlatAnimatedIconTest
 		radioButton3.setIcon( radioIcon );
 
 		checkBox1.setIcon( new AnimatedSwitchIcon() );
+		checkBox3.setIcon( new AnimatedSwitchIconEx() );
 		checkBox2.setIcon( new AnimatedMinimalTestIcon() );
+
+		radioButton1.putClientProperty( CHART_COLOR_KEY, CHART_RADIO_BUTTON_1 );
+		radioButton2.putClientProperty( CHART_COLOR_KEY, CHART_RADIO_BUTTON_2 );
+		radioButton3.putClientProperty( CHART_COLOR_KEY, CHART_RADIO_BUTTON_3 );
+		checkBox1.putClientProperty( CHART_COLOR_KEY, CHART_CHECK_BOX_1 );
+		checkBox2.putClientProperty( CHART_COLOR_KEY, CHART_CHECK_BOX_2 );
+
+		radioButton1ChartColor.setForeground( CHART_RADIO_BUTTON_1 );
+		radioButton2ChartColor.setForeground( CHART_RADIO_BUTTON_2 );
+		radioButton3ChartColor.setForeground( CHART_RADIO_BUTTON_3 );
+		checkBox1ChartColor.setForeground( CHART_CHECK_BOX_1 );
+		checkBox2ChartColor.setForeground( CHART_CHECK_BOX_2 );
 	}
 
 	private void initComponents() {
 		// JFormDesigner - Component initialization - DO NOT MODIFY  //GEN-BEGIN:initComponents
 		radioButton1 = new JRadioButton();
+		radioButton1ChartColor = new FlatAnimatorTest.JChartColor();
+		lineChartPanel = new LineChartPanel();
 		radioButton2 = new JRadioButton();
+		radioButton2ChartColor = new FlatAnimatorTest.JChartColor();
 		radioButton3 = new JRadioButton();
+		radioButton3ChartColor = new FlatAnimatorTest.JChartColor();
 		checkBox1 = new JCheckBox();
+		checkBox1ChartColor = new FlatAnimatorTest.JChartColor();
+		checkBox3 = new JCheckBox();
 		checkBox2 = new JCheckBox();
+		checkBox2ChartColor = new FlatAnimatorTest.JChartColor();
 		durationLabel = new JLabel();
 		durationField = new JSpinner();
 
@@ -66,14 +96,16 @@ public class FlatAnimatedIconTest
 		setLayout(new MigLayout(
 			"insets dialog,hidemode 3",
 			// columns
-			"[]para" +
-			"[fill]",
+			"[]" +
+			"[fill]para" +
+			"[grow,fill]",
 			// rows
 			"[]" +
 			"[]" +
 			"[]para" +
 			"[]" +
 			"[]" +
+			"[]" +
 			"[grow]" +
 			"[]"));
 
@@ -81,30 +113,40 @@ public class FlatAnimatedIconTest
 		radioButton1.setText("radio 1");
 		radioButton1.setSelected(true);
 		add(radioButton1, "cell 0 0");
+		add(radioButton1ChartColor, "cell 1 0");
+		add(lineChartPanel, "cell 2 0 1 8,growy");
 
 		//---- radioButton2 ----
 		radioButton2.setText("radio 2");
 		add(radioButton2, "cell 0 1");
+		add(radioButton2ChartColor, "cell 1 1");
 
 		//---- radioButton3 ----
 		radioButton3.setText("radio 3");
 		add(radioButton3, "cell 0 2");
+		add(radioButton3ChartColor, "cell 1 2");
 
 		//---- checkBox1 ----
 		checkBox1.setText("switch");
 		add(checkBox1, "cell 0 3");
+		add(checkBox1ChartColor, "cell 1 3");
+
+		//---- checkBox3 ----
+		checkBox3.setText("switch ex");
+		add(checkBox3, "cell 0 4");
 
 		//---- checkBox2 ----
 		checkBox2.setText("minimal");
-		add(checkBox2, "cell 0 4");
+		add(checkBox2, "cell 0 5");
+		add(checkBox2ChartColor, "cell 1 5");
 
 		//---- durationLabel ----
 		durationLabel.setText("Duration:");
-		add(durationLabel, "cell 0 6 2 1");
+		add(durationLabel, "cell 0 7 2 1");
 
 		//---- durationField ----
-		durationField.setModel(new SpinnerNumberModel(200, 100, null, 50));
-		add(durationField, "cell 0 6 2 1");
+		durationField.setModel(new SpinnerNumberModel(200, 0, null, 50));
+		add(durationField, "cell 0 7 2 1");
 
 		//---- buttonGroup1 ----
 		ButtonGroup buttonGroup1 = new ButtonGroup();
@@ -116,10 +158,17 @@ public class FlatAnimatedIconTest
 
 	// JFormDesigner - Variables declaration - DO NOT MODIFY  //GEN-BEGIN:variables
 	private JRadioButton radioButton1;
+	private FlatAnimatorTest.JChartColor radioButton1ChartColor;
+	private LineChartPanel lineChartPanel;
 	private JRadioButton radioButton2;
+	private FlatAnimatorTest.JChartColor radioButton2ChartColor;
 	private JRadioButton radioButton3;
+	private FlatAnimatorTest.JChartColor radioButton3ChartColor;
 	private JCheckBox checkBox1;
+	private FlatAnimatorTest.JChartColor checkBox1ChartColor;
+	private JCheckBox checkBox3;
 	private JCheckBox checkBox2;
+	private FlatAnimatorTest.JChartColor checkBox2ChartColor;
 	private JLabel durationLabel;
 	private JSpinner durationField;
 	// JFormDesigner - End of variables declaration  //GEN-END:variables
@@ -146,7 +195,8 @@ public class FlatAnimatedIconTest
 		}
 
 		@Override
-		public void paintIconAnimated( Component c, Graphics g, int x, int y, float animatedValue ) {
+		public void paintIconAnimated( Component c, Graphics2D g, float[] animatedValues ) {
+			float animatedValue = animatedValues[0];
 			Color color = ColorFunctions.mix( onColor, offColor, animatedValue );
 
 			// border
@@ -162,12 +212,17 @@ public class FlatAnimatedIconTest
 			float dotDiameter = DOT_SIZE * animatedValue;
 			float xy = (SIZE - dotDiameter) / 2f;
 			g.setColor( color );
-			((Graphics2D)g).fill( new Ellipse2D.Float( xy, xy, dotDiameter, dotDiameter ) );
+			g.fill( new Ellipse2D.Float( xy, xy, dotDiameter, dotDiameter ) );
+
+			if( animatedValue != 0 && animatedValue != 1 ) {
+				Color chartColor = (Color) ((JComponent)c).getClientProperty( CHART_COLOR_KEY );
+				lineChartPanel.addValue( chartColor, animatedValue, Integer.MIN_VALUE, "radio" );
+			}
 		}
 
 		@Override
-		public float getValue( Component c ) {
-			return ((JRadioButton)c).isSelected() ? 1 : 0;
+		public float[] getAnimatableValues( Component c ) {
+			return new float[] { ((JRadioButton)c).isSelected() ? 1 : 0 };
 		}
 
 		@Override
@@ -178,7 +233,7 @@ public class FlatAnimatedIconTest
 
 	//---- class AnimatedSwitchIcon -------------------------------------------
 
-	public class AnimatedSwitchIcon
+	private class AnimatedSwitchIcon
 		extends FlatAnimatedIcon
 	{
 		private final Color offColor = Color.lightGray;
@@ -189,22 +244,113 @@ public class FlatAnimatedIconTest
 		}
 
 		@Override
-		public void paintIconAnimated( Component c, Graphics g, int x, int y, float animatedValue ) {
+		public void paintIconAnimated( Component c, Graphics2D g, float[] animatedValues ) {
+			float animatedValue = animatedValues[0];
 			Color color = ColorFunctions.mix( onColor, offColor, animatedValue );
 
+			// paint track
 			g.setColor( color );
-			g.fillRoundRect( x, y, width, height, height, height );
+			g.fillRoundRect( 0, 0, width, height, height, height );
 
+			// paint thumb
 			int thumbSize = height - 4;
-			float thumbX = x + 2 + ((width - 4 - thumbSize) * animatedValue);
-			int thumbY = y + 2;
+			float thumbX = 2 + ((width - 4 - thumbSize) * animatedValue);
+			int thumbY = 2;
 			g.setColor( Color.white );
-			((Graphics2D)g).fill( new Ellipse2D.Float( thumbX, thumbY, thumbSize, thumbSize ) );
+			g.fill( new Ellipse2D.Float( thumbX, thumbY, thumbSize, thumbSize ) );
+
+			if( animatedValue != 0 && animatedValue != 1 ) {
+				Color chartColor = (Color) ((JComponent)c).getClientProperty( CHART_COLOR_KEY );
+				lineChartPanel.addValue( chartColor, animatedValue, Integer.MIN_VALUE, "switch" );
+			}
 		}
 
 		@Override
-		public float getValue( Component c ) {
-			return ((AbstractButton)c).isSelected() ? 1 : 0;
+		public float[] getAnimatableValues( Component c ) {
+			return new float[] { ((AbstractButton)c).isSelected() ? 1 : 0 };
+		}
+
+		@Override
+		public int getAnimationDuration() {
+			return (Integer) durationField.getValue();
+		}
+	}
+
+	//---- class AnimatedSwitchIconEx -----------------------------------------
+
+	private static final int HW = 8;
+
+	private class AnimatedSwitchIconEx
+		extends FlatAnimatedIcon
+	{
+		private final Color offColor = Color.lightGray;
+		private final Color onColor = Color.red;
+		private final Color hoverColor = new Color( 0x4400cc00, true );
+		private final Color pressedColor = new Color( 0x440000cc, true );
+
+		public AnimatedSwitchIconEx() {
+			super( 28 + HW, 16 + HW, null );
+		}
+
+		@Override
+		public void paintIconAnimated( Component c, Graphics2D g, float[] animatedValues ) {
+			Color color = ColorFunctions.mix( onColor, offColor, animatedValues[0] );
+
+			int hw2 = HW / 2;
+			int x = hw2;
+			int y = hw2;
+			int width = this.width - HW;
+			int height = this.height - HW;
+
+			// paint track
+			g.setColor( color );
+			g.fillRoundRect( x, y, width, height, height, height );
+
+			// paint thumb
+			int thumbSize = height - 4;
+			float thumbX = x + 2 + ((width - 4 - thumbSize) * animatedValues[0]);
+			int thumbY = y + 2;
+			g.setColor( Color.white );
+			g.fill( new Ellipse2D.Float( thumbX, thumbY, thumbSize, thumbSize ) );
+
+			// paint hover
+			if( animatedValues[1] > 0 ) {
+				g.setColor( hoverColor );
+				paintHoverOrPressed( g, thumbX, thumbY, thumbSize, animatedValues[1] );
+			}
+
+			// paint pressed
+			if( animatedValues[2] > 0 ) {
+				g.setColor( pressedColor );
+				paintHoverOrPressed( g, thumbX, thumbY, thumbSize, animatedValues[2] );
+			}
+
+			for( int i = 0; i < animatedValues.length; i++ ) {
+				float animatedValue = animatedValues[i];
+				if( animatedValue != 0 && animatedValue != 1 )
+					lineChartPanel.addValue( CHART_SWITCH_EX[i], animatedValue, Integer.MIN_VALUE, "switch ex" );
+			}
+		}
+
+		private void paintHoverOrPressed( Graphics2D g, float thumbX, int thumbY, int thumbSize, float animatedValue ) {
+			float hw = (HW + 4) * animatedValue;
+			Path2D path = new Path2D.Float( Path2D.WIND_EVEN_ODD );
+			path.append( new Ellipse2D.Float( thumbX - (hw / 2), thumbY - (hw / 2),
+				thumbSize + hw, thumbSize + hw ), false );
+			path.append( new Ellipse2D.Float( thumbX, thumbY, thumbSize, thumbSize ), false );
+			g.fill( path );
+		}
+
+		@Override
+		public float[] getAnimatableValues( Component c ) {
+			AbstractButton b = (AbstractButton) c;
+			ButtonModel bm = b.getModel();
+
+			return new float[] {
+				b.isSelected() ? 1 : 0,
+				bm.isRollover() ? 1 : 0,
+				bm.isPressed() ? 1 : 0,
+			};
 		}
 
 		@Override
@@ -223,27 +369,31 @@ public class FlatAnimatedIconTest
 	{
 		@Override
 		public int getIconWidth() {
-			return 100;
+			return UIScale.scale( 50 );
 		}
 
 		@Override
 		public int getIconHeight() {
-			return 20;
+			return UIScale.scale( 16 );
 		}
 
 		@Override
-		public void paintIconAnimated( Component c, Graphics g, int x, int y, float animatedValue ) {
-			int w = getIconWidth();
-			int h = getIconHeight();
+		public void paintAnimated( Component c, Graphics2D g, int x, int y, int width, int height, float[] animatedValues ) {
+			float animatedValue = animatedValues[0];
 
 			g.setColor( Color.red );
-			g.drawRect( x, y, w - 1, h - 1 );
-			g.fillRect( x, y, Math.round( w * animatedValue ), h );
+			g.drawRect( x, y, width - 1, height - 1 );
+			g.fillRect( x, y, Math.round( width * animatedValue ), height );
+
+			if( animatedValue != 0 && animatedValue != 1 ) {
+				Color chartColor = (Color) ((JComponent)c).getClientProperty( CHART_COLOR_KEY );
+				lineChartPanel.addValue( chartColor, animatedValue, Integer.MIN_VALUE, "minimal" );
+			}
 		}
 
 		@Override
-		public float getValue( Component c ) {
-			return ((AbstractButton)c).isSelected() ? 1 : 0;
+		public float[] getAnimatableValues( Component c ) {
+			return new float[] { ((AbstractButton)c).isSelected() ? 1 : 0 };
 		}
 
 		@Override

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

@@ -1,12 +1,12 @@
-JFDML JFormDesigner: "7.0.2.0.298" Java: "15" encoding: "UTF-8"
+JFDML JFormDesigner: "8.3" encoding: "UTF-8"
 
 new FormModel {
 	contentType: "form/swing"
 	root: new FormRoot {
 		add( new FormContainer( "com.formdev.flatlaf.testing.FlatTestPanel", new FormLayoutManager( class net.miginfocom.swing.MigLayout ) {
 			"$layoutConstraints": "insets dialog,hidemode 3"
-			"$columnConstraints": "[]para[fill]"
-			"$rowConstraints": "[][][]para[][][grow][]"
+			"$columnConstraints": "[][fill]para[grow,fill]"
+			"$rowConstraints": "[][][]para[][][][grow][]"
 		} ) {
 			name: "this"
 			add( new FormComponent( "javax.swing.JRadioButton" ) {
@@ -17,6 +17,16 @@ new FormModel {
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
 				"value": "cell 0 0"
 			} )
+			add( new FormComponent( "com.formdev.flatlaf.testing.FlatAnimatorTest$JChartColor" ) {
+				name: "radioButton1ChartColor"
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 1 0"
+			} )
+			add( new FormComponent( "com.formdev.flatlaf.testing.LineChartPanel" ) {
+				name: "lineChartPanel"
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 2 0 1 8,growy"
+			} )
 			add( new FormComponent( "javax.swing.JRadioButton" ) {
 				name: "radioButton2"
 				"text": "radio 2"
@@ -24,6 +34,11 @@ new FormModel {
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
 				"value": "cell 0 1"
 			} )
+			add( new FormComponent( "com.formdev.flatlaf.testing.FlatAnimatorTest$JChartColor" ) {
+				name: "radioButton2ChartColor"
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 1 1"
+			} )
 			add( new FormComponent( "javax.swing.JRadioButton" ) {
 				name: "radioButton3"
 				"text": "radio 3"
@@ -31,37 +46,58 @@ new FormModel {
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
 				"value": "cell 0 2"
 			} )
+			add( new FormComponent( "com.formdev.flatlaf.testing.FlatAnimatorTest$JChartColor" ) {
+				name: "radioButton3ChartColor"
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 1 2"
+			} )
 			add( new FormComponent( "javax.swing.JCheckBox" ) {
 				name: "checkBox1"
 				"text": "switch"
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
 				"value": "cell 0 3"
 			} )
+			add( new FormComponent( "com.formdev.flatlaf.testing.FlatAnimatorTest$JChartColor" ) {
+				name: "checkBox1ChartColor"
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 1 3"
+			} )
+			add( new FormComponent( "javax.swing.JCheckBox" ) {
+				name: "checkBox3"
+				"text": "switch ex"
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 0 4"
+			} )
 			add( new FormComponent( "javax.swing.JCheckBox" ) {
 				name: "checkBox2"
 				"text": "minimal"
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 0 4"
+				"value": "cell 0 5"
+			} )
+			add( new FormComponent( "com.formdev.flatlaf.testing.FlatAnimatorTest$JChartColor" ) {
+				name: "checkBox2ChartColor"
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 1 5"
 			} )
 			add( new FormComponent( "javax.swing.JLabel" ) {
 				name: "durationLabel"
 				"text": "Duration:"
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 0 6 2 1"
+				"value": "cell 0 7 2 1"
 			} )
 			add( new FormComponent( "javax.swing.JSpinner" ) {
 				name: "durationField"
 				"model": new javax.swing.SpinnerNumberModel {
-					minimum: 100
+					minimum: 0
 					stepSize: 50
 					value: 200
 				}
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 0 6 2 1"
+				"value": "cell 0 7 2 1"
 			} )
 		}, new FormLayoutConstraints( null ) {
 			"location": new java.awt.Point( 0, 0 )
-			"size": new java.awt.Dimension( 415, 350 )
+			"size": new java.awt.Dimension( 810, 350 )
 		} )
 		add( new FormNonVisual( "javax.swing.ButtonGroup" ) {
 			name: "buttonGroup1"

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

@@ -20,6 +20,8 @@ import java.awt.*;
 import javax.swing.*;
 import com.formdev.flatlaf.util.Animator;
 import com.formdev.flatlaf.util.CubicBezierEasing;
+import com.formdev.flatlaf.util.UIScale;
+import com.formdev.flatlaf.util.Animator.Interpolator;
 import net.miginfocom.swing.*;
 
 /**
@@ -28,8 +30,13 @@ import net.miginfocom.swing.*;
 public class FlatAnimatorTest
 	extends FlatTestPanel
 {
+	private static final Color CHART_LINEAR = Color.blue;
+	private static final Color CHART_EASE_IN_OUT = Color.magenta;
+	private static final Color CHART_STANDARD_EASING = Color.red;
+
 	private Animator linearAnimator;
 	private Animator easeInOutAnimator;
+	private Animator standardEasingAnimator;
 
 	public static void main( String[] args ) {
 		SwingUtilities.invokeLater( () -> {
@@ -40,85 +47,132 @@ public class FlatAnimatorTest
 
 	FlatAnimatorTest() {
 		initComponents();
+
+		linearChartColor.setForeground( CHART_LINEAR );
+		easeInOutChartColor.setForeground( CHART_EASE_IN_OUT );
+		standardEasingChartColor.setForeground( CHART_STANDARD_EASING );
 	}
 
 	private void start() {
-		startLinear();
-		startEaseInOut();
+		linearAnimator = start( linearAnimator, null, linearScrollBar, CHART_LINEAR );
+		easeInOutAnimator = start( easeInOutAnimator, CubicBezierEasing.EASE_IN_OUT, easeInOutScrollBar, CHART_EASE_IN_OUT );
+		standardEasingAnimator = start( standardEasingAnimator, CubicBezierEasing.STANDARD_EASING, standardEasingScrollBar, CHART_STANDARD_EASING );
 	}
 
-	private void startLinear() {
-		if( linearAnimator != null ) {
-			linearAnimator.stop();
-			linearAnimator.start();
+	private Animator start( Animator animator, Interpolator interpolator, JScrollBar scrollBar, Color chartColor ) {
+		if( animator != null ) {
+			animator.stop();
+			animator.start();
 		} else {
-			linearAnimator = new Animator( 1000, fraction -> {
-				linearScrollBar.setValue( Math.round( fraction * linearScrollBar.getMaximum() ) );
+			animator = new Animator( 1000, fraction -> {
+				scrollBar.setValue( Math.round( fraction * scrollBar.getMaximum() ) );
+				lineChartPanel.addValue( chartColor, fraction, Integer.MIN_VALUE, "animator" );
 			} );
-			linearAnimator.start();
-		}
-	}
-
-	private void startEaseInOut() {
-		if( easeInOutAnimator != null ) {
-			easeInOutAnimator.stop();
-			easeInOutAnimator.start();
-		} else {
-			easeInOutAnimator = new Animator( 1000, fraction -> {
-				easeInOutScrollBar.setValue( Math.round( fraction * easeInOutScrollBar.getMaximum() ) );
-			} );
-			easeInOutAnimator.setInterpolator( CubicBezierEasing.EASE_IN_OUT );
-			easeInOutAnimator.start();
+			animator.setInterpolator( interpolator );
+			animator.start();
 		}
+		return animator;
 	}
 
 	private void initComponents() {
 		// JFormDesigner - Component initialization - DO NOT MODIFY  //GEN-BEGIN:initComponents
-		JLabel label1 = new JLabel();
+		linearLabel = new JLabel();
+		linearChartColor = new FlatAnimatorTest.JChartColor();
 		linearScrollBar = new JScrollBar();
-		JLabel label2 = new JLabel();
+		easeInOutLabel = new JLabel();
+		easeInOutChartColor = new FlatAnimatorTest.JChartColor();
 		easeInOutScrollBar = new JScrollBar();
+		standardEasingLabel = new JLabel();
+		standardEasingChartColor = new FlatAnimatorTest.JChartColor();
+		standardEasingScrollBar = new JScrollBar();
 		startButton = new JButton();
+		lineChartPanel = new LineChartPanel();
 
 		//======== this ========
 		setLayout(new MigLayout(
 			"ltr,insets dialog,hidemode 3",
 			// columns
 			"[fill]" +
+			"[fill]" +
 			"[grow,fill]",
 			// rows
 			"[]" +
 			"[]" +
-			"[]"));
+			"[]" +
+			"[]para" +
+			"[400,grow,fill]"));
 
-		//---- label1 ----
-		label1.setText("Linear:");
-		add(label1, "cell 0 0");
+		//---- linearLabel ----
+		linearLabel.setText("Linear:");
+		add(linearLabel, "cell 0 0");
+		add(linearChartColor, "cell 1 0");
 
 		//---- linearScrollBar ----
 		linearScrollBar.setOrientation(Adjustable.HORIZONTAL);
 		linearScrollBar.setBlockIncrement(1);
-		add(linearScrollBar, "cell 1 0");
+		add(linearScrollBar, "cell 2 0");
 
-		//---- label2 ----
-		label2.setText("Ease in out:");
-		add(label2, "cell 0 1");
+		//---- easeInOutLabel ----
+		easeInOutLabel.setText("Ease in out:");
+		add(easeInOutLabel, "cell 0 1");
+		add(easeInOutChartColor, "cell 1 1");
 
 		//---- easeInOutScrollBar ----
 		easeInOutScrollBar.setOrientation(Adjustable.HORIZONTAL);
 		easeInOutScrollBar.setBlockIncrement(1);
-		add(easeInOutScrollBar, "cell 1 1");
+		add(easeInOutScrollBar, "cell 2 1");
+
+		//---- standardEasingLabel ----
+		standardEasingLabel.setText("Standard easing:");
+		add(standardEasingLabel, "cell 0 2");
+		add(standardEasingChartColor, "cell 1 2");
+
+		//---- standardEasingScrollBar ----
+		standardEasingScrollBar.setOrientation(Adjustable.HORIZONTAL);
+		standardEasingScrollBar.setBlockIncrement(1);
+		add(standardEasingScrollBar, "cell 2 2");
 
 		//---- startButton ----
 		startButton.setText("Start");
 		startButton.addActionListener(e -> start());
-		add(startButton, "cell 0 2");
+		add(startButton, "cell 0 3");
+		add(lineChartPanel, "cell 0 4 3 1");
 		// JFormDesigner - End of component initialization  //GEN-END:initComponents
 	}
 
 	// JFormDesigner - Variables declaration - DO NOT MODIFY  //GEN-BEGIN:variables
+	private JLabel linearLabel;
+	private FlatAnimatorTest.JChartColor linearChartColor;
 	private JScrollBar linearScrollBar;
+	private JLabel easeInOutLabel;
+	private FlatAnimatorTest.JChartColor easeInOutChartColor;
 	private JScrollBar easeInOutScrollBar;
+	private JLabel standardEasingLabel;
+	private FlatAnimatorTest.JChartColor standardEasingChartColor;
+	private JScrollBar standardEasingScrollBar;
 	private JButton startButton;
+	private LineChartPanel lineChartPanel;
 	// JFormDesigner - End of variables declaration  //GEN-END:variables
+
+	//---- class JChartColor --------------------------------------------------
+
+	static class JChartColor
+		extends JComponent
+	{
+		@Override
+		public Dimension getPreferredSize() {
+			return new Dimension( UIScale.scale( 24 ), UIScale.scale( 12 ) );
+		}
+
+		@Override
+		public Dimension getMinimumSize() {
+			return getPreferredSize();
+		}
+
+		@Override
+		protected void paintComponent( Graphics g ) {
+			g.setColor( getForeground() );
+			g.fillRect( 0, 0, UIScale.scale( 24 ), UIScale.scale( 12 ) );
+		}
+	}
 }

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

@@ -1,4 +1,4 @@
-JFDML JFormDesigner: "7.0.2.0.298" Java: "14.0.2" encoding: "UTF-8"
+JFDML JFormDesigner: "8.3" encoding: "UTF-8"
 
 new FormModel {
 	contentType: "form/swing"
@@ -8,16 +8,27 @@ new FormModel {
 		}
 		add( new FormContainer( "com.formdev.flatlaf.testing.FlatTestPanel", new FormLayoutManager( class net.miginfocom.swing.MigLayout ) {
 			"$layoutConstraints": "ltr,insets dialog,hidemode 3"
-			"$columnConstraints": "[fill][grow,fill]"
-			"$rowConstraints": "[][][]"
+			"$columnConstraints": "[fill][fill][grow,fill]"
+			"$rowConstraints": "[][][][]para[400,grow,fill]"
 		} ) {
 			name: "this"
 			add( new FormComponent( "javax.swing.JLabel" ) {
-				name: "label1"
+				name: "linearLabel"
 				"text": "Linear:"
+				auxiliary() {
+					"JavaCodeGenerator.variableLocal": false
+				}
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
 				"value": "cell 0 0"
 			} )
+			add( new FormComponent( "com.formdev.flatlaf.testing.FlatAnimatorTest$JChartColor" ) {
+				name: "linearChartColor"
+				auxiliary() {
+					"JavaCodeGenerator.variableLocal": false
+				}
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 1 0"
+			} )
 			add( new FormComponent( "javax.swing.JScrollBar" ) {
 				name: "linearScrollBar"
 				"orientation": 0
@@ -26,14 +37,25 @@ new FormModel {
 					"JavaCodeGenerator.variableLocal": false
 				}
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 1 0"
+				"value": "cell 2 0"
 			} )
 			add( new FormComponent( "javax.swing.JLabel" ) {
-				name: "label2"
+				name: "easeInOutLabel"
 				"text": "Ease in out:"
+				auxiliary() {
+					"JavaCodeGenerator.variableLocal": false
+				}
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
 				"value": "cell 0 1"
 			} )
+			add( new FormComponent( "com.formdev.flatlaf.testing.FlatAnimatorTest$JChartColor" ) {
+				name: "easeInOutChartColor"
+				auxiliary() {
+					"JavaCodeGenerator.variableLocal": false
+				}
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 1 1"
+			} )
 			add( new FormComponent( "javax.swing.JScrollBar" ) {
 				name: "easeInOutScrollBar"
 				"orientation": 0
@@ -42,7 +64,34 @@ new FormModel {
 					"JavaCodeGenerator.variableLocal": false
 				}
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 1 1"
+				"value": "cell 2 1"
+			} )
+			add( new FormComponent( "javax.swing.JLabel" ) {
+				name: "standardEasingLabel"
+				"text": "Standard easing:"
+				auxiliary() {
+					"JavaCodeGenerator.variableLocal": false
+				}
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 0 2"
+			} )
+			add( new FormComponent( "com.formdev.flatlaf.testing.FlatAnimatorTest$JChartColor" ) {
+				name: "standardEasingChartColor"
+				auxiliary() {
+					"JavaCodeGenerator.variableLocal": false
+				}
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 1 2"
+			} )
+			add( new FormComponent( "javax.swing.JScrollBar" ) {
+				name: "standardEasingScrollBar"
+				"orientation": 0
+				"blockIncrement": 1
+				auxiliary() {
+					"JavaCodeGenerator.variableLocal": false
+				}
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 2 2"
 			} )
 			add( new FormComponent( "javax.swing.JButton" ) {
 				name: "startButton"
@@ -52,11 +101,19 @@ new FormModel {
 				}
 				addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "start", false ) )
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 0 2"
+				"value": "cell 0 3"
+			} )
+			add( new FormComponent( "com.formdev.flatlaf.testing.LineChartPanel" ) {
+				name: "lineChartPanel"
+				auxiliary() {
+					"JavaCodeGenerator.variableLocal": false
+				}
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 0 4 3 1"
 			} )
 		}, new FormLayoutConstraints( null ) {
 			"location": new java.awt.Point( 0, 0 )
-			"size": new java.awt.Dimension( 415, 350 )
+			"size": new java.awt.Dimension( 625, 625 )
 		} )
 	}
 }

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

@@ -0,0 +1,883 @@
+/*
+/*
+ * Copyright 2023 FormDev Software GmbH
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.formdev.flatlaf.testing;
+
+import java.awt.Color;
+import java.awt.Dimension;
+import java.awt.EventQueue;
+import java.awt.Graphics;
+import java.awt.Graphics2D;
+import java.awt.Point;
+import java.awt.Rectangle;
+import java.awt.event.HierarchyEvent;
+import java.awt.event.MouseEvent;
+import java.text.MessageFormat;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Objects;
+import javax.swing.*;
+import com.formdev.flatlaf.FlatClientProperties;
+import com.formdev.flatlaf.FlatLaf;
+import com.formdev.flatlaf.ui.FlatUIUtils;
+import com.formdev.flatlaf.util.HSLColor;
+import com.formdev.flatlaf.util.HiDPIUtils;
+import com.formdev.flatlaf.util.UIScale;
+import net.miginfocom.swing.*;
+
+/**
+ * @author Karl Tauber
+ */
+class LineChartPanel
+	extends JPanel
+{
+	LineChartPanel() {
+		initComponents();
+
+		lineChartScrollPane.putClientProperty( FlatClientProperties.SCROLL_PANE_SMOOTH_SCROLLING, false );
+
+		oneSecondWidthChanged();
+		updateChartDelayedChanged();
+
+		// clear chart on startup
+		addHierarchyListener( e -> {
+			if( (e.getChangeFlags() & HierarchyEvent.SHOWING_CHANGED) != 0 && isShowing() )
+				EventQueue.invokeLater( this::clearChart );
+		} );
+
+		// show chart tooltips immediately and forever
+		ToolTipManager.sharedInstance().setInitialDelay( 0 );
+		ToolTipManager.sharedInstance().setDismissDelay( Integer.MAX_VALUE );
+	}
+
+	@Override
+	public void addNotify() {
+		super.addNotify();
+
+		// allow clearing chart with Alt+C without moving focus to button
+		getRootPane().registerKeyboardAction(
+			e -> clearChart(),
+			KeyStroke.getKeyStroke( "alt " + (char) clearChartButton.getMnemonic() ),
+			JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT );
+	}
+
+	public boolean isYZeroAtTop() {
+		return lineChart.yZeroAtTop;
+	}
+
+	public void setYZeroAtTop( boolean yZeroAtTop ) {
+		lineChart.yZeroAtTop = yZeroAtTop;
+		lineChart.repaint();
+	}
+
+	public boolean isAsynchron() {
+		return lineChart.asynchron;
+	}
+
+	public void setAsynchron( boolean asynchron ) {
+		lineChart.asynchron = asynchron;
+		lineChart.repaint();
+	}
+
+	public boolean isTemporaryValueDetection() {
+		return lineChart.temporaryValueDetection;
+	}
+
+	public void setTemporaryValueDetection( boolean temporaryValueDetection ) {
+		lineChart.temporaryValueDetection = temporaryValueDetection;
+		lineChart.repaint();
+	}
+
+	public String getLegendYValueText() {
+		return yValueLabel.getText();
+	}
+
+	public void setLegendYValueText( String s ) {
+		yValueLabel.setText( s );
+	}
+
+	public String getLegend1Text() {
+		return legend1Label.getText();
+	}
+
+	public void setLegend1Text( String s ) {
+		legend1Label.setText( s );
+	}
+
+	public String getLegend2Text() {
+		return legend2Label.getText();
+	}
+
+	public void setLegend2Text( String s ) {
+		legend2Label.setText( s );
+	}
+
+	public int getOneSecondWidth() {
+		return oneSecondWidthSlider.getValue();
+	}
+
+	public void setOneSecondWidth( int oneSecondWidth ) {
+		oneSecondWidthSlider.setValue( oneSecondWidth );
+	}
+
+	public boolean isUpdateChartDelayed() {
+		return updateChartDelayedCheckBox.isSelected();
+	}
+
+	public void setUpdateChartDelayed( boolean updateChartDelayed ) {
+		updateChartDelayedCheckBox.setSelected( updateChartDelayed );
+		updateChartDelayedChanged();
+	}
+
+	void addValue( Color chartColor, double value, int ivalue, String name ) {
+		lineChart.addValue( chartColor, value, ivalue, null, false, name );
+	}
+
+	void addValueWithDot( Color chartColor, double value, int ivalue, Color dotColor, String name ) {
+		if( dotColor == null )
+			dotColor = chartColor;
+		lineChart.addValue( chartColor, value, ivalue, dotColor, false, name );
+	}
+
+	void addDot( Color chartColor, double value, int ivalue, Color dotColor, String name ) {
+		if( dotColor == null )
+			dotColor = chartColor;
+		lineChart.addValue( chartColor, value, ivalue, dotColor, true, name );
+	}
+
+	void addMethodHighlight( String classAndMethod, String highlightColor ) {
+		lineChart.methodHighlightMap.put( classAndMethod, highlightColor );
+	}
+
+	private void oneSecondWidthChanged() {
+		int oneSecondWidth = oneSecondWidthSlider.getValue();
+		int msPerLineX =
+			oneSecondWidth <= 2000 ? 100 :
+			oneSecondWidth <= 4000 ? 50 :
+			oneSecondWidth <= 8000 ? 25 :
+			10;
+
+		lineChart.oneSecondWidth = oneSecondWidth;
+		lineChart.msPerLineX = msPerLineX;
+		lineChart.revalidate();
+		lineChart.repaint();
+
+		if( xLabelText == null )
+			xLabelText = xLabel.getText();
+		xLabel.setText( MessageFormat.format( xLabelText, msPerLineX ) );
+	}
+	private String xLabelText;
+
+	private void updateChartDelayedChanged() {
+		lineChart.updateDelayed = updateChartDelayedCheckBox.isSelected();
+	}
+
+	private void clearChart() {
+		lineChart.clear();
+	}
+
+	private void initComponents() {
+		// JFormDesigner - Component initialization - DO NOT MODIFY  //GEN-BEGIN:initComponents  @formatter:off
+		lineChartScrollPane = new JScrollPane();
+		lineChart = new LineChartPanel.LineChart();
+		JPanel legendPanel = new JPanel();
+		xLabel = new JLabel();
+		legend1Label = new JLabel();
+		JLabel yLabel = new JLabel();
+		yValueLabel = new JLabel();
+		JLabel yLabel2 = new JLabel();
+		JPanel hSpacer1 = new JPanel(null);
+		legend2Label = new JLabel();
+		JLabel oneSecondWidthLabel = new JLabel();
+		oneSecondWidthSlider = new JSlider();
+		updateChartDelayedCheckBox = new JCheckBox();
+		clearChartButton = new JButton();
+
+		//======== this ========
+		setLayout(new MigLayout(
+			"hidemode 3",
+			// columns
+			"[grow,fill]",
+			// rows
+			"[100:300,grow,fill]" +
+			"[]"));
+
+		//======== lineChartScrollPane ========
+		{
+			lineChartScrollPane.setViewportView(lineChart);
+		}
+		add(lineChartScrollPane, "cell 0 0");
+
+		//======== legendPanel ========
+		{
+			legendPanel.setLayout(new MigLayout(
+				"insets 0,hidemode 3,gapy 0",
+				// columns
+				"[fill]para" +
+				"[fill]",
+				// rows
+				"[]" +
+				"[]"));
+
+			//---- xLabel ----
+			xLabel.setText("X: time ({0}ms per line)");
+			legendPanel.add(xLabel, "cell 0 0");
+			legendPanel.add(legend1Label, "cell 1 0");
+
+			//---- yLabel ----
+			yLabel.setText("Y: ");
+			legendPanel.add(yLabel, "cell 0 1,gapx 0 0");
+
+			//---- yValueLabel ----
+			yValueLabel.setText("value");
+			legendPanel.add(yValueLabel, "cell 0 1,gapx 0 0");
+
+			//---- yLabel2 ----
+			yLabel2.setText(" (10% per line)");
+			legendPanel.add(yLabel2, "cell 0 1,gapx 0 0");
+			legendPanel.add(hSpacer1, "cell 0 1,growx");
+			legendPanel.add(legend2Label, "cell 1 1");
+		}
+		add(legendPanel, "cell 0 1");
+
+		//---- oneSecondWidthLabel ----
+		oneSecondWidthLabel.setText("Scale X:");
+		oneSecondWidthLabel.setDisplayedMnemonic('A');
+		oneSecondWidthLabel.setLabelFor(oneSecondWidthSlider);
+		add(oneSecondWidthLabel, "cell 0 1,alignx right,growx 0");
+
+		//---- oneSecondWidthSlider ----
+		oneSecondWidthSlider.setMinimum(100);
+		oneSecondWidthSlider.setMaximum(10000);
+		oneSecondWidthSlider.setSnapToTicks(true);
+		oneSecondWidthSlider.setMajorTickSpacing(100);
+		oneSecondWidthSlider.setValue(500);
+		oneSecondWidthSlider.addChangeListener(e -> oneSecondWidthChanged());
+		add(oneSecondWidthSlider, "cell 0 1,alignx right,growx 0");
+
+		//---- updateChartDelayedCheckBox ----
+		updateChartDelayedCheckBox.setText("Update chart delayed");
+		updateChartDelayedCheckBox.setMnemonic('P');
+		updateChartDelayedCheckBox.addActionListener(e -> updateChartDelayedChanged());
+		add(updateChartDelayedCheckBox, "cell 0 1,alignx right,growx 0");
+
+		//---- clearChartButton ----
+		clearChartButton.setText("Clear Chart");
+		clearChartButton.setMnemonic('C');
+		clearChartButton.addActionListener(e -> clearChart());
+		add(clearChartButton, "cell 0 1,alignx right,growx 0");
+		// JFormDesigner - End of component initialization  //GEN-END:initComponents  @formatter:on
+	}
+
+	// JFormDesigner - Variables declaration - DO NOT MODIFY  //GEN-BEGIN:variables  @formatter:off
+	private JScrollPane lineChartScrollPane;
+	private LineChartPanel.LineChart lineChart;
+	private JLabel xLabel;
+	private JLabel legend1Label;
+	private JLabel yValueLabel;
+	private JLabel legend2Label;
+	private JSlider oneSecondWidthSlider;
+	private JCheckBox updateChartDelayedCheckBox;
+	private JButton clearChartButton;
+	// JFormDesigner - End of variables declaration  //GEN-END:variables  @formatter:on
+
+
+	//---- class LineChart ----------------------------------------------------
+
+	private static class LineChart
+		extends JComponent
+		implements Scrollable
+	{
+		private static final int UPDATE_DELAY_MS = 20;
+		private static final int NEW_SEQUENCE_TIME_LAG_MS = 500;
+		private static final int NEW_SEQUENCE_GAP_MS = 100;
+		private static final int HIT_OFFSET = 4;
+
+		private static final boolean TEST = false;
+
+		// asynchron means that chart for each color starts at x=0
+		private boolean asynchron;
+		private boolean temporaryValueDetection;
+		private boolean yZeroAtTop;
+		private int oneSecondWidth = 500;
+		private int msPerLineX = 100;
+		private final HashMap<String, String> methodHighlightMap = new HashMap<>();
+
+		private static class Data {
+			final double value;
+			final int ivalue;
+			final Color chartColor;
+			final Color dotColor;
+			final boolean dotOnly;
+			final long time; // in milliseconds
+			final String name;
+			final Exception stack;
+
+			Data( double value, int ivalue, Color chartColor, Color dotColor,
+				boolean dotOnly, long time, String name, Exception stack )
+			{
+				this.value = value;
+				this.ivalue = ivalue;
+				this.chartColor = chartColor;
+				this.dotColor = dotColor;
+				this.dotOnly = dotOnly;
+				this.time = time;
+				this.name = name;
+				this.stack = stack;
+			}
+
+			@Override
+			public String toString() {
+				// for debugging
+				return "value=" + value + ", ivalue=" + ivalue + ", dotColor=" + dotColor
+					+ ", dotOnly=" + dotOnly + ", time=" + time + ", name=" + name;
+			}
+		}
+
+		private final List<Data> syncChartData = new ArrayList<>();
+		private final Map<Color, List<Data>> asyncColor2dataMap = new HashMap<>();
+		private final Timer repaintTime;
+		private Color lastUsedChartColor;
+		private boolean updateDelayed;
+
+		private final List<Point> lastPoints = new ArrayList<>();
+		private final List<Data> lastDatas = new ArrayList<>();
+		private double lastSystemScaleFactor = 1;
+		private String lastToolTipPrinted;
+
+		LineChart() {
+			repaintTime = new Timer( UPDATE_DELAY_MS, e -> repaintAndRevalidate() );
+			repaintTime.setRepeats( false );
+
+			ToolTipManager.sharedInstance().registerComponent( this );
+
+			if( TEST )
+				initTestData();
+		}
+
+		void addValue( Color chartColor, double value, int ivalue, Color dotColor, boolean dotOnly, String name ) {
+			if( TEST )
+				return;
+
+			List<Data> chartData = asyncColor2dataMap.computeIfAbsent( chartColor, k -> new ArrayList<>() );
+			Data data = new Data( value, ivalue, chartColor, dotColor, dotOnly, System.nanoTime() / 1_000_000, name, new Exception() );
+			if( asynchron )
+				chartData.add( data );
+			else
+				syncChartData.add( data );
+
+			lastUsedChartColor = chartColor;
+
+			if( updateDelayed ) {
+				repaintTime.stop();
+				repaintTime.start();
+			} else
+				repaintAndRevalidate();
+		}
+
+		void clear() {
+			if( TEST ) {
+				repaint();
+				return;
+			}
+
+			syncChartData.clear();
+			asyncColor2dataMap.clear();
+			lastUsedChartColor = null;
+
+			repaint();
+			revalidate();
+		}
+
+		private void repaintAndRevalidate() {
+			repaint();
+			revalidate();
+
+			// scroll horizontally
+			if( lastUsedChartColor != null ) {
+				// compute chart width of last used color and start of last sequence
+				int[] lastSeqX = new int[1];
+				int cw = chartWidth( asynchron ? asyncColor2dataMap.get( lastUsedChartColor ) : syncChartData, lastSeqX );
+
+				// scroll to end of last sequence (of last used color)
+				int lastSeqWidth = cw - lastSeqX[0];
+				int width = Math.min( lastSeqWidth, getParent().getWidth() );
+				int x = cw - width;
+				scrollRectToVisible( new Rectangle( x, 0, width, getHeight() ) );
+			}
+		}
+
+		@Override
+		protected void paintComponent( Graphics g ) {
+			Graphics g2 = g.create();
+			try {
+				HiDPIUtils.paintAtScale1x( (Graphics2D) g2, this, this::paintAt1x );
+			} finally {
+				g2.dispose();
+			}
+		}
+
+		private void paintAt1x( Graphics2D g, int x, int y, int width, int height, double scaleFactor ) {
+			FlatUIUtils.setRenderingHints( g );
+
+			int oneSecondWidth = (int) (UIScale.scale( this.oneSecondWidth ) * scaleFactor);
+			int seqGapWidth = (oneSecondWidth * NEW_SEQUENCE_GAP_MS) / 1000;
+			int hitOffset = (int) Math.round( UIScale.scale( HIT_OFFSET ) * scaleFactor );
+
+			Color lineColor = FlatUIUtils.getUIColor( "Component.borderColor", Color.lightGray );
+			Color lineColor2 = FlatLaf.isLafDark()
+				? new HSLColor( lineColor ).adjustTone( 30 )
+				: new HSLColor( lineColor ).adjustShade( 30 );
+
+			g.translate( x, y );
+
+			// fill background
+			g.setColor( UIManager.getColor( "Table.background" ) );
+			g.fillRect( x, y, width, height );
+
+			// paint horizontal lines
+			for( int i = 1; i < 10; i++ ) {
+				int hy = (height * i) / 10;
+				g.setColor( (i != 5) ? lineColor : lineColor2 );
+				g.drawLine( 0, hy, width, hy );
+			}
+
+			// paint vertical lines
+			int perLineXWidth = Math.round( (oneSecondWidth / 1000f) * msPerLineX );
+			for( int i = 1, xv = perLineXWidth; xv < width; xv += perLineXWidth, i++ ) {
+				g.setColor( (i % 5 != 0) ? lineColor : lineColor2 );
+				g.drawLine( xv, 0, xv, height );
+			}
+
+			lastPoints.clear();
+			lastDatas.clear();
+			lastSystemScaleFactor = scaleFactor;
+
+			// paint lines
+			for( Map.Entry<Color, List<Data>> e : asyncColor2dataMap.entrySet() ) {
+				List<Data> chartData = asynchron ? e.getValue() : syncChartData;
+				Color chartColor = e.getKey();
+				if( FlatLaf.isLafDark() )
+					chartColor = new HSLColor( chartColor ).adjustTone( 50 );
+				Color temporaryValueColor = fade( chartColor, FlatLaf.isLafDark() ? 0.7f : 0.3f );
+				Color dataPointColor = fade( chartColor, FlatLaf.isLafDark() ? 0.6f : 0.2f );
+
+				// sequence start time and x coordinate
+				long seqStartTime = 0;
+				int seqStartX = 0;
+
+				// "previous" data point time and x coordinate (used for "new sequence" detection)
+				long ptime = Long.MIN_VALUE;
+				int px = 0;
+
+				// "line" data point x/y coordinates
+				int lx = -1;
+				int ly = -1;
+
+				boolean isTemporaryValue = false;
+				int lastTemporaryValueIndex = -1;
+
+				int size = chartData.size();
+				for( int i = 0; i < size; i++ ) {
+					Data data = chartData.get( i );
+					boolean useData = (data.chartColor == chartColor);
+
+					// start new sequence if there is a larger time gap to previous data point
+					boolean newSeq = (data.time > ptime + NEW_SEQUENCE_TIME_LAG_MS);
+					ptime = data.time;
+
+					if( newSeq ) {
+						// start new sequence
+						seqStartTime = data.time;
+						seqStartX = (i > 0) ? px + seqGapWidth : 0;
+						px = seqStartX;
+						lx = -1;
+						ly = -1;
+						isTemporaryValue = false;
+					}
+
+					// x/y coordinates of current data point
+					int dx = (int) (seqStartX + (((data.time - seqStartTime) / 1000.) * oneSecondWidth));
+					int dy = (int) ((height - 1) * data.value);
+					if( !yZeroAtTop )
+						dy = height - 1 - dy;
+
+					// remember x coordinate for "new sequence" detection
+					px = dx;
+
+					if( !useData )
+						continue;
+
+					// remember data point for tooltip
+					lastPoints.add( new Point( dx, dy ) );
+					lastDatas.add( data );
+
+					// paint rectangle to indicate data point
+					g.setColor( dataPointColor );
+					g.drawRect( dx - hitOffset, dy - hitOffset, hitOffset * 2, hitOffset * 2 );
+
+					// paint dot
+					if( data.dotColor != null ) {
+						int s1 = (int) Math.round( UIScale.scale( 1 ) * scaleFactor );
+						int s3 = (int) Math.round( UIScale.scale( 3 ) * scaleFactor );
+						g.setColor( data.dotColor );
+						g.fillRect( dx - s1, dy - s1, s3, s3 );
+
+						if( data.dotOnly )
+							continue;
+					}
+
+					// start of line?
+					if( lx < 0 ) {
+						// remember x/y coordinates for first line
+						lx = dx;
+						ly = dy;
+						continue;
+					}
+
+					if( isTemporaryValue && i > lastTemporaryValueIndex )
+						isTemporaryValue = false;
+
+					// draw line in sequence
+					g.setColor( isTemporaryValue ? temporaryValueColor : chartColor );
+					g.drawLine( lx, ly, dx, dy );
+
+					// remember x/y coordinates for next line
+					lx = dx;
+					ly = dy;
+
+					// check next data points for "temporary" value(s)
+					if( temporaryValueDetection && !isTemporaryValue ) {
+						// one or two values between two equal values are considered "temporary",
+						// which means that they are the target value for the following scroll animation
+						int stage = 0;
+						for( int j = i + 1; j < size && stage <= 2 && !isTemporaryValue; j++ ) {
+							Data nextData = chartData.get( j );
+							if( nextData.dotOnly )
+								continue; // ignore dots
+
+							// check whether next data point is within 10 milliseconds
+							if( nextData.time > data.time + 10 )
+								break;
+
+							if( stage >= 1 && stage <= 2 && nextData.value == data.value ) {
+								isTemporaryValue = true;
+								lastTemporaryValueIndex = j;
+							}
+							stage++;
+						}
+					}
+				}
+			}
+		}
+
+		private int chartWidth() {
+			int width = 0;
+			if( asynchron ) {
+				for( List<Data> chartData : asyncColor2dataMap.values() )
+					width = Math.max( width, chartWidth( chartData, null ) );
+			} else
+				width = Math.max( width, chartWidth( syncChartData, null ) );
+			return width;
+		}
+
+		private int chartWidth( List<Data> chartData, int[] lastSeqX ) {
+			long seqTime = 0;
+			int seqX = 0;
+			long ptime = 0;
+			int px = 0;
+			int oneSecondWidth = UIScale.scale( this.oneSecondWidth );
+			int seqGapWidth = (oneSecondWidth * NEW_SEQUENCE_GAP_MS) / 1000;
+
+			int size = chartData.size();
+			for( int i = 0; i < size; i++ ) {
+				Data data = chartData.get( i );
+
+				if( data.time > ptime + NEW_SEQUENCE_TIME_LAG_MS ) {
+					// start new sequence
+					seqTime = data.time;
+					seqX = (i > 0) ? px + seqGapWidth : 0;
+					px = seqX;
+				} else {
+					// line in sequence
+					int dx = (int) (seqX + (((data.time - seqTime) / 1000.) * oneSecondWidth ));
+					px = dx;
+				}
+
+				ptime = data.time;
+			}
+
+			if( lastSeqX != null )
+				lastSeqX[0] = seqX;
+
+			return px;
+		}
+
+		@Override
+		public Dimension getPreferredSize() {
+			return new Dimension( chartWidth(), 200 );
+		}
+
+		@Override
+		public Dimension getPreferredScrollableViewportSize() {
+			return new Dimension( chartWidth(), 200 );
+		}
+
+		@Override
+		public int getScrollableUnitIncrement( Rectangle visibleRect, int orientation, int direction ) {
+			return UIScale.scale( oneSecondWidth );
+		}
+
+		@Override
+		public int getScrollableBlockIncrement( Rectangle visibleRect, int orientation, int direction ) {
+			JViewport viewport = (JViewport) SwingUtilities.getAncestorOfClass( JViewport.class, this );
+			return (viewport != null) ? viewport.getWidth() : 200;
+		}
+
+		@Override
+		public boolean getScrollableTracksViewportWidth() {
+			JViewport viewport = (JViewport) SwingUtilities.getAncestorOfClass( JViewport.class, this );
+			return (viewport != null) ? viewport.getWidth() > chartWidth() : true;
+		}
+
+		@Override
+		public boolean getScrollableTracksViewportHeight() {
+			return true;
+		}
+
+		@Override
+		public String getToolTipText( MouseEvent e ) {
+			int x = (int) Math.round( e.getX() * lastSystemScaleFactor );
+			int y = (int) Math.round( e.getY() * lastSystemScaleFactor );
+			int hitOffset = (int) Math.round( UIScale.scale( HIT_OFFSET ) * lastSystemScaleFactor );
+			StringBuilder buf = null;
+
+			int pointsCount = lastPoints.size();
+			for( int i = 0; i < pointsCount; i++ ) {
+				Point pt = lastPoints.get( i );
+
+				// check X/Y coordinates
+				if( x < pt.x - hitOffset || x > pt.x + hitOffset ||
+					y < pt.y - hitOffset || y > pt.y + hitOffset )
+				  continue;
+
+				if( buf == null ) {
+					buf = new StringBuilder( 5000 );
+					buf.append( "<html>" );
+				}
+
+				Data data = lastDatas.get( i );
+				buf.append( "<h2>" );
+				if( data.dotOnly )
+					buf.append( "DOT: " );
+				buf.append( data.name );
+				if( data.ivalue != Integer.MIN_VALUE )
+					buf.append( ' ' ).append( data.ivalue );
+				buf.append( " (" ).append( String.format( "%.3f", data.value ) ).append( ')' );
+				buf.append( "</h2>" );
+
+				StackTraceElement[] stackTrace = data.stack.getStackTrace();
+				for( int j = 0; j < stackTrace.length; j++ ) {
+					StackTraceElement stackElement = stackTrace[j];
+					String className = stackElement.getClassName();
+					String methodName = stackElement.getMethodName();
+					String classAndMethod = className + '.' + methodName;
+
+					// ignore methods from this class
+					if( className.startsWith( LineChartPanel.class.getName() ) )
+						continue;
+
+					int repeatCount = 0;
+					for( int k = j + 1; k < stackTrace.length; k++ ) {
+						if( !stackElement.equals( stackTrace[k] ) )
+							break;
+						repeatCount++;
+					}
+					j += repeatCount;
+
+					String highlight = methodHighlightMap.get( classAndMethod );
+					if( highlight == null )
+						highlight = methodHighlightMap.get( className );
+					if( highlight == null )
+						highlight = methodHighlightMap.get( methodName );
+					if( highlight != null )
+						buf.append( "<span color=\"" ).append( highlight ).append( "\">" );
+
+					// append method
+					buf.append( className )
+						.append( ".<b>" )
+						.append( methodName )
+						.append( "</b>" );
+					if( highlight != null )
+						buf.append( "</span>" );
+
+					// append source
+					buf.append( " <span color=\"#888888\">" );
+					if( stackElement.getFileName() != null ) {
+						buf.append( '(' );
+						buf.append( stackElement.getFileName() );
+						if( stackElement.getLineNumber() >= 0 )
+							buf.append( ':' ).append( stackElement.getLineNumber() );
+						buf.append( ')' );
+					} else
+						buf.append( "(Unknown Source)" );
+					buf.append( "</span>" );
+
+					// append repeat count
+					if( repeatCount > 0 )
+						buf.append( " <b>" ).append( repeatCount + 1 ).append( "x</b>" );
+					buf.append( "<br>" );
+
+					// break at some methods to make stack smaller
+					if( classAndMethod.equals( "java.awt.event.InvocationEvent.dispatch" ) ||
+						classAndMethod.equals( "java.awt.Component.processMouseEvent" ) ||
+						classAndMethod.equals( "java.awt.Component.processMouseWheelEvent" ) ||
+						classAndMethod.equals( "java.awt.Component.processMouseMotionEvent" ) ||
+						classAndMethod.equals( "javax.swing.JComponent.processKeyBinding" ) ||
+						classAndMethod.equals( "javax.swing.JComponent.paintComponent" ) ||
+						classAndMethod.equals( "com.formdev.flatlaf.util.Animator.timingEvent" ) )
+					  break;
+				}
+				buf.append( "..." );
+			}
+
+			if( buf == null )
+				return null;
+
+			buf.append( "<html>" );
+			String toolTip = buf.toString();
+
+			// print to console
+			if( !Objects.equals( toolTip, lastToolTipPrinted ) ) {
+				lastToolTipPrinted = toolTip;
+
+				System.out.println( toolTip
+					.replace( "<br>", "\n" )
+					.replace( "<h2>", "\n---- " )
+					.replace( "</h2>", " ----\n" )
+					.replaceAll( "<[^>]+>", "" ) );
+			}
+
+			return buf.toString();
+		}
+
+		private void initTestData() {
+//			asynchron = true;
+
+			addTestSimpleLine( Color.red, 0.0, "red" );
+			addTestSimpleLine( Color.green, 0.1, "green" );
+			addTestSimpleLine( Color.blue, 0.2, "blue" );
+			addTestSimpleLine( Color.magenta, 0.3, "magenta" );
+
+			addTestMiddleDotOnly( Color.red, 0.0, "red" );
+			addTestMiddleDotOnly( Color.green, 0.1, "green" );
+			addTestMiddleDotOnly( Color.blue, 0.2, "blue" );
+			addTestMiddleDotOnly( Color.magenta, 0.3, "magenta" );
+
+			addTestLeadingDotOnly( Color.red, 0.0, "red" );
+			addTestLeadingDotOnly( Color.green, 0.1, "green" );
+			addTestLeadingDotOnly( Color.blue, 0.2, "blue" );
+			addTestLeadingDotOnly( Color.magenta, 0.3, "magenta" );
+
+			addTestTrailingDotOnly( Color.red, 0.0, "red" );
+			addTestTrailingDotOnly( Color.green, 0.1, "green" );
+			addTestTrailingDotOnly( Color.blue, 0.2, "blue" );
+			addTestTrailingDotOnly( Color.magenta, 0.3, "magenta" );
+
+			addTestSingleData( Color.red, 0.0, "red" );
+			addTestSingleData( Color.green, 0.1, "green" );
+			addTestSingleData( Color.blue, 0.2, "blue" );
+			addTestSingleData( Color.magenta, 0.3, "magenta" );
+
+			temporaryValueDetection = true;
+			addTestWithTemporaryValues( Color.red, 0.0, "red" );
+			addTestWithTemporaryValues( Color.green, 0.1, "green" );
+			addTestWithTemporaryValues( Color.blue, 0.2, "blue" );
+			addTestWithTemporaryValues( Color.magenta, 0.3, "magenta" );
+		}
+
+		private void addTestSimpleLine( Color chartColor, double baseValue, String name ) {
+			addTestValue(  0, chartColor, baseValue + 0.0, null, false, name );
+			addTestValue( 50, chartColor, baseValue + 0.1, null, false, name );
+			addTestValue( 50, chartColor, baseValue + 0.4, null, false, name );
+			testTime += 1000;
+		}
+
+		private void addTestMiddleDotOnly( Color chartColor, double baseValue, String name ) {
+			addTestValue(  0, chartColor, baseValue + 0.0, null, false, name );
+			addTestValue( 20, chartColor, baseValue + 0.3, chartColor, true, name );
+			addTestValue( 30, chartColor, baseValue + 0.1, null, false, name );
+			addTestValue( 20, chartColor, baseValue + 0.05, chartColor, true, name );
+			addTestValue( 30, chartColor, baseValue + 0.4, null, false, name );
+			testTime += 1000;
+		}
+
+		private void addTestLeadingDotOnly( Color chartColor, double baseValue, String name ) {
+			addTestValue(  0, chartColor, baseValue + 0.05, chartColor, true, name );
+			addTestValue( 20, chartColor, baseValue + 0.0, null, false, name );
+			addTestValue( 50, chartColor, baseValue + 0.1, null, false, name );
+			addTestValue( 30, chartColor, baseValue + 0.4, null, false, name );
+			testTime += 1000;
+		}
+
+		private void addTestTrailingDotOnly( Color chartColor, double baseValue, String name ) {
+			addTestValue(  0, chartColor, baseValue + 0.0, null, false, name );
+			addTestValue( 50, chartColor, baseValue + 0.1, null, false, name );
+			addTestValue( 30, chartColor, baseValue + 0.4, null, false, name );
+			addTestValue( 20, chartColor, baseValue + 0.05, chartColor, true, name );
+			testTime += 1000;
+		}
+
+		private void addTestSingleData( Color chartColor, double baseValue, String name ) {
+			addTestValue(  0, chartColor, baseValue + 0.15, chartColor, false, name );
+			testTime += 1000;
+		}
+
+		private void addTestWithTemporaryValues( Color chartColor, double baseValue, String name ) {
+			addTestValue(  0, chartColor, baseValue + 0.0, null, false, name );
+			addTestValue( 50, chartColor, baseValue + 0.1, null, false, name );
+			addTestValue( 5, chartColor, baseValue + 0.4, null, false, name );
+			addTestValue( 5, chartColor, baseValue + 0.1, null, false, name );
+			addTestValue( 40, chartColor, baseValue + 0.3, null, false, name );
+			testTime += 1000;
+		}
+
+		private void addTestValue( int timeDelta, Color chartColor, double value, Color dotColor, boolean dotOnly, String name ) {
+			testTime += timeDelta;
+
+			List<Data> chartData = asyncColor2dataMap.computeIfAbsent( chartColor, k -> new ArrayList<>() );
+			Data data = new Data( value, testIValue++, chartColor, dotColor, dotOnly, testTime, name, new Exception() );
+			if( asynchron )
+				chartData.add( data );
+			else
+				syncChartData.add( data );
+
+			lastUsedChartColor = chartColor;
+		}
+
+		private int testIValue;
+		private long testTime;
+
+		//TODO remove and use ColorFunctions.fade() when merging to main
+		private static Color fade( Color color, float amount ) {
+			int newAlpha = Math.round( 255 * amount );
+			return new Color( (color.getRGB() & 0xffffff) | (newAlpha << 24), true );
+		}
+	}
+}

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

@@ -0,0 +1,123 @@
+JFDML JFormDesigner: "8.3" encoding: "UTF-8"
+
+new FormModel {
+	contentType: "form/swing"
+	root: new FormRoot {
+		add( new FormContainer( "javax.swing.JPanel", new FormLayoutManager( class net.miginfocom.swing.MigLayout ) {
+			"$layoutConstraints": "hidemode 3"
+			"$columnConstraints": "[grow,fill]"
+			"$rowConstraints": "[100:300,grow,fill][]"
+		} ) {
+			name: "this"
+			add( new FormContainer( "javax.swing.JScrollPane", new FormLayoutManager( class javax.swing.JScrollPane ) ) {
+				name: "lineChartScrollPane"
+				add( new FormComponent( "com.formdev.flatlaf.testing.LineChartPanel$LineChart" ) {
+					name: "lineChart"
+				} )
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 0 0"
+			} )
+			add( new FormContainer( "javax.swing.JPanel", new FormLayoutManager( class net.miginfocom.swing.MigLayout ) {
+				"$layoutConstraints": "insets 0,hidemode 3,gapy 0"
+				"$columnConstraints": "[fill]para[fill]"
+				"$rowConstraints": "[][]"
+			} ) {
+				name: "legendPanel"
+				auxiliary() {
+					"JavaCodeGenerator.variableLocal": true
+				}
+				add( new FormComponent( "javax.swing.JLabel" ) {
+					name: "xLabel"
+					"text": "X: time ({0}ms per line)"
+				}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+					"value": "cell 0 0"
+				} )
+				add( new FormComponent( "javax.swing.JLabel" ) {
+					name: "legend1Label"
+				}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+					"value": "cell 1 0"
+				} )
+				add( new FormComponent( "javax.swing.JLabel" ) {
+					name: "yLabel"
+					"text": "Y: "
+					auxiliary() {
+						"JavaCodeGenerator.variableLocal": true
+					}
+				}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+					"value": "cell 0 1,gapx 0 0"
+				} )
+				add( new FormComponent( "javax.swing.JLabel" ) {
+					name: "yValueLabel"
+					"text": "value"
+				}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+					"value": "cell 0 1,gapx 0 0"
+				} )
+				add( new FormComponent( "javax.swing.JLabel" ) {
+					name: "yLabel2"
+					"text": " (10% per line)"
+					auxiliary() {
+						"JavaCodeGenerator.variableLocal": true
+					}
+				}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+					"value": "cell 0 1,gapx 0 0"
+				} )
+				add( new FormComponent( "com.jformdesigner.designer.wrapper.HSpacer" ) {
+					name: "hSpacer1"
+					auxiliary() {
+						"JavaCodeGenerator.variableLocal": true
+					}
+				}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+					"value": "cell 0 1,growx"
+				} )
+				add( new FormComponent( "javax.swing.JLabel" ) {
+					name: "legend2Label"
+				}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+					"value": "cell 1 1"
+				} )
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 0 1"
+			} )
+			add( new FormComponent( "javax.swing.JLabel" ) {
+				name: "oneSecondWidthLabel"
+				"text": "Scale X:"
+				"displayedMnemonic": 65
+				"labelFor": new FormReference( "oneSecondWidthSlider" )
+				auxiliary() {
+					"JavaCodeGenerator.variableLocal": true
+				}
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 0 1,alignx right,growx 0"
+			} )
+			add( new FormComponent( "javax.swing.JSlider" ) {
+				name: "oneSecondWidthSlider"
+				"minimum": 100
+				"maximum": 10000
+				"snapToTicks": true
+				"majorTickSpacing": 100
+				"value": 500
+				addEvent( new FormEvent( "javax.swing.event.ChangeListener", "stateChanged", "oneSecondWidthChanged", false ) )
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 0 1,alignx right,growx 0"
+			} )
+			add( new FormComponent( "javax.swing.JCheckBox" ) {
+				name: "updateChartDelayedCheckBox"
+				"text": "Update chart delayed"
+				"mnemonic": 80
+				addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "updateChartDelayedChanged", false ) )
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 0 1,alignx right,growx 0"
+			} )
+			add( new FormComponent( "javax.swing.JButton" ) {
+				name: "clearChartButton"
+				"text": "Clear Chart"
+				"mnemonic": 67
+				addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "clearChart", false ) )
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 0 1,alignx right,growx 0"
+			} )
+		}, new FormLayoutConstraints( null ) {
+			"location": new java.awt.Point( 0, 0 )
+			"size": new java.awt.Dimension( 880, 300 )
+		} )
+	}
+}