content: /*
   * Copyright 2020 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 themeengine.include.com.formdev.flatlaf.icons;
  
  import java.awt.Color;
  import java.awt.Component;
  import java.awt.Dimension;
  import java.awt.Graphics2D;
  import javax.swing.UIManager;
  import themeengine.include.com.formdev.flatlaf.ui.FlatButtonUI;
  import themeengine.include.com.formdev.flatlaf.ui.FlatUIUtils;
  import themeengine.include.com.formdev.flatlaf.util.HiDPIUtils;
  
  /**
   * Base class for window icons.
   *
   * @uiDefault TitlePane.buttonSize						Dimension
   * @uiDefault TitlePane.buttonHoverBackground			Color
   * @uiDefault TitlePane.buttonPressedBackground			Color
   *
   * @author Karl Tauber
   */
  public abstract class FlatWindowAbstractIcon
  	extends FlatAbstractIcon
  {
  	private final Color hoverBackground;
  	private final Color pressedBackground;
  
  	public FlatWindowAbstractIcon() {
  		this( UIManager.getDimension( "TitlePane.buttonSize" ),
  			UIManager.getColor( "TitlePane.buttonHoverBackground" ),
  			UIManager.getColor( "TitlePane.buttonPressedBackground" ) );
  	}
  
  	public FlatWindowAbstractIcon( Dimension size, Color hoverBackground, Color pressedBackground ) {
  		super( size.width, size.height, null );
  		this.hoverBackground = hoverBackground;
  		this.pressedBackground = pressedBackground;
  	}
  
  	@Override
  	protected void paintIcon( Component c, Graphics2D g ) {
  		paintBackground( c, g );
  
  		g.setColor( getForeground( c ) );
  		HiDPIUtils.paintAtScale1x( g, 0, 0, width, height, this::paintIconAt1x );
  	}
  
  	protected abstract void paintIconAt1x( Graphics2D g, int x, int y, int width, int height, double scaleFactor );
  
  	protected void paintBackground( Component c, Graphics2D g ) {
  		Color background = FlatButtonUI.buttonStateColor( c, null, null, null, hoverBackground, pressedBackground );
  		if( background != null ) {
  			g.setColor( FlatUIUtils.deriveColor( background, c.getBackground() ) );
  			g.fillRect( 0, 0, width, height );
  		}
  	}
  
  	protected Color getForeground( Component c ) {
  		return c.getForeground();
  	}
  }
  