src/java.desktop/share/classes/javax/swing/plaf/metal/MetalScrollButton.java - platform/libcore - Git at Google

 /*
  * Copyright (c) 1998, 2014, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.  Oracle designates this
  * particular file as subject to the "Classpath" exception as provided
  * by Oracle in the LICENSE file that accompanied this code.
  *
  * This code is distributed in the hope that it will be useful, but WITHOUT
  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  * version 2 for more details (a copy is included in the LICENSE file that
  * accompanied this code).
  *
  * You should have received a copy of the GNU General Public License version
  * 2 along with this work; if not, write to the Free Software Foundation,
  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  * or visit www.oracle.com if you need additional information or have any
  * questions.
  */

 package javax.swing.plaf.metal;

 import java.awt.Dimension;
 import java.awt.Graphics;
 import java.awt.Color;
 import java.awt.Polygon;

 import javax.swing.*;

 import javax.swing.plaf.basic.BasicArrowButton;


 /**
  * JButton object for Metal scrollbar arrows.
  * <p>
  * <strong>Warning:</strong>
  * Serialized objects of this class will not be compatible with
  * future Swing releases. The current serialization support is
  * appropriate for short term storage or RMI between applications running
  * the same version of Swing.  As of 1.4, support for long term storage
  * of all JavaBeans&trade;
  * has been added to the <code>java.beans</code> package.
  * Please see {@link java.beans.XMLEncoder}.
  *
  * @author Tom Santos
  * @author Steve Wilson
  */
 @SuppressWarnings("serial") // Same-version serialization only
 public class MetalScrollButton extends BasicArrowButton
 {
   private static Color shadowColor;
   private static Color highlightColor;
   private boolean isFreeStanding = false;

   private int buttonWidth;

         /**
          * Constructs an instance of {@code MetalScrollButton}.
          *
          * @param direction the direction
          * @param width the width
          * @param freeStanding the free standing value
          */
         public MetalScrollButton( int direction, int width, boolean freeStanding )
         {
             super( direction );

             shadowColor = UIManager.getColor("ScrollBar.darkShadow");
             highlightColor = UIManager.getColor("ScrollBar.highlight");

             buttonWidth = width;
             isFreeStanding = freeStanding;
         }

         /**
          * Sets the free standing value.
          *
          * @param freeStanding the free standing value
          */
         public void setFreeStanding( boolean freeStanding )
         {
             isFreeStanding = freeStanding;
         }

         public void paint( Graphics g )
         {
             boolean leftToRight = MetalUtils.isLeftToRight(this);
             boolean isEnabled = getParent().isEnabled();

             Color arrowColor = isEnabled ? MetalLookAndFeel.getControlInfo() : MetalLookAndFeel.getControlDisabled();
             boolean isPressed = getModel().isPressed();
             int width = getWidth();
             int height = getHeight();
             int w = width;
             int h = height;
             int arrowHeight = (height+1) / 4;
             int arrowWidth = (height+1) / 2;

             if ( isPressed )
             {
                 g.setColor( MetalLookAndFeel.getControlShadow() );
             }
             else
             {
                 g.setColor( getBackground() );
             }

             g.fillRect( 0, 0, width, height );

             if ( getDirection() == NORTH )
             {
                 if ( !isFreeStanding ) {
                     height +=1;
                     g.translate( 0, -1 );
                     width += 2;
                     if ( !leftToRight ) {
                         g.translate( -1, 0 );
                     }
                 }

                 // Draw the arrow
                 g.setColor( arrowColor );
                 int startY = ((h+1) - arrowHeight) / 2;
                 int startX = (w / 2);

                 g.translate(startX, startY);
                 g.fillPolygon(new int[]{0, 1, arrowHeight + 1, -arrowHeight},
                               new int[]{0, 0, arrowHeight, arrowHeight}, 4);
                 g.translate(-startX, -startY);

                 if (isEnabled) {
                     g.setColor( highlightColor );

                     if ( !isPressed )
                     {
                         g.drawLine( 1, 1, width - 3, 1 );
                         g.drawLine( 1, 1, 1, height - 1 );
                     }

                     g.drawLine( width - 1, 1, width - 1, height - 1 );

                     g.setColor( shadowColor );
                     g.drawLine( 0, 0, width - 2, 0 );
                     g.drawLine( 0, 0, 0, height - 1 );
                     g.drawLine( width - 2, 2, width - 2, height - 1 );
                 } else {
                     MetalUtils.drawDisabledBorder(g, 0, 0, width, height+1);
                 }
                 if ( !isFreeStanding ) {
                     height -= 1;
                     g.translate( 0, 1 );
                     width -= 2;
                     if ( !leftToRight ) {
                         g.translate( 1, 0 );
                     }
                 }
             }
             else if ( getDirection() == SOUTH )
             {
                 if ( !isFreeStanding ) {
                     height += 1;
                     width += 2;
                     if ( !leftToRight ) {
                         g.translate( -1, 0 );
                     }
                 }

                 // Draw the arrow
                 g.setColor( arrowColor );

                 int startY = (((h+1) - arrowHeight) / 2)+ arrowHeight-1;
                 int startX = (w / 2);
                 g.translate(startX, startY);
                 g.fillPolygon(new int[]{0, 1, arrowHeight + 1, -arrowHeight},
                               new int[]{0, 0, -arrowHeight, -arrowHeight}, 4);
                 g.translate(-startX, -startY);

                 if (isEnabled) {
                     g.setColor( highlightColor );

                     if ( !isPressed )
                     {
                         g.drawLine( 1, 0, width - 3, 0 );
                         g.drawLine( 1, 0, 1, height - 3 );
                     }

                     g.drawLine( 1, height - 1, width - 1, height - 1 );
                     g.drawLine( width - 1, 0, width - 1, height - 1 );

                     g.setColor( shadowColor );
                     g.drawLine( 0, 0, 0, height - 2 );
                     g.drawLine( width - 2, 0, width - 2, height - 2 );
                     g.drawLine( 2, height - 2, width - 2, height - 2 );
                 } else {
                     MetalUtils.drawDisabledBorder(g, 0,-1, width, height+1);
                 }

                 if ( !isFreeStanding ) {
                     height -= 1;
                     width -= 2;
                     if ( !leftToRight ) {
                         g.translate( 1, 0 );
                     }
                 }
             }
             else if ( getDirection() == EAST )
             {
                 if ( !isFreeStanding ) {
                     height += 2;
                     width += 1;
                 }

                 // Draw the arrow
                 g.setColor( arrowColor );

                 int startX = (((w+1) - arrowHeight) / 2) + arrowHeight-1;
                 int startY = (h / 2);

                 g.translate(startX, startY);
                 g.fillPolygon(new int[]{0, 0, -arrowHeight, -arrowHeight},
                               new int[]{0, 1, arrowHeight + 1, -arrowHeight}, 4);
                 g.translate(-startX, -startY);

                 if (isEnabled) {
                     g.setColor( highlightColor );

                     if ( !isPressed )
                     {
                         g.drawLine( 0, 1, width - 3, 1 );
                         g.drawLine( 0, 1, 0, height - 3 );
                     }

                     g.drawLine( width - 1, 1, width - 1, height - 1 );
                     g.drawLine( 0, height - 1, width - 1, height - 1 );

                     g.setColor( shadowColor );
                     g.drawLine( 0, 0,width - 2, 0 );
                     g.drawLine( width - 2, 2, width - 2, height - 2 );
                     g.drawLine( 0, height - 2, width - 2, height - 2 );
                 } else {
                     MetalUtils.drawDisabledBorder(g,-1,0, width+1, height);
                 }
                 if ( !isFreeStanding ) {
                     height -= 2;
                     width -= 1;
                 }
             }
             else if ( getDirection() == WEST )
             {
                 if ( !isFreeStanding ) {
                     height += 2;
                     width += 1;
                     g.translate( -1, 0 );
                 }

                 // Draw the arrow
                 g.setColor( arrowColor );

                 int startX = (((w+1) - arrowHeight) / 2);
                 int startY = (h / 2);

                 g.translate(startX, startY);
                 g.fillPolygon(new int[]{0, 0, arrowHeight, arrowHeight},
                               new int[]{0, 1, arrowHeight + 1, -arrowHeight}, 4);
                 g.translate(-startX, -startY);

                 if (isEnabled) {
                     g.setColor( highlightColor );


                     if ( !isPressed )
                     {
                         g.drawLine( 1, 1, width - 1, 1 );
                         g.drawLine( 1, 1, 1, height - 3 );
                     }

                     g.drawLine( 1, height - 1, width - 1, height - 1 );

                     g.setColor( shadowColor );
                     g.drawLine( 0, 0, width - 1, 0 );
                     g.drawLine( 0, 0, 0, height - 2 );
                     g.drawLine( 2, height - 2, width - 1, height - 2 );
                 } else {
                     MetalUtils.drawDisabledBorder(g,0,0, width+1, height);
                 }

                 if ( !isFreeStanding ) {
                     height -= 2;
                     width -= 1;
                     g.translate( 1, 0 );
                 }
             }
         }

         public Dimension getPreferredSize()
         {
             if ( getDirection() == NORTH )
             {
                 return new Dimension( buttonWidth, buttonWidth - 2 );
             }
             else if ( getDirection() == SOUTH )
             {
                 return new Dimension( buttonWidth, buttonWidth - (isFreeStanding ? 1 : 2) );
             }
             else if ( getDirection() == EAST )
             {
                 return new Dimension( buttonWidth - (isFreeStanding ? 1 : 2), buttonWidth );
             }
             else if ( getDirection() == WEST )
             {
                 return new Dimension( buttonWidth - 2, buttonWidth );
             }
             else
             {
                 return new Dimension( 0, 0 );
             }
         }

         public Dimension getMinimumSize()
         {
             return getPreferredSize();
         }

         public Dimension getMaximumSize()
         {
             return new Dimension( Integer.MAX_VALUE, Integer.MAX_VALUE );
         }

         /**
          * Returns the width of the button.
          *
          * @return the width of the button
          */
         public int getButtonWidth() {
             return buttonWidth;
         }
 }
	/*
	* Copyright (c) 1998, 2014, Oracle and/or its affiliates. All rights reserved.
	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
	*
	* This code is free software; you can redistribute it and/or modify it
	* under the terms of the GNU General Public License version 2 only, as
	* published by the Free Software Foundation. Oracle designates this
	* particular file as subject to the "Classpath" exception as provided
	* by Oracle in the LICENSE file that accompanied this code.
	*
	* This code is distributed in the hope that it will be useful, but WITHOUT
	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
	* version 2 for more details (a copy is included in the LICENSE file that
	* accompanied this code).
	*
	* You should have received a copy of the GNU General Public License version
	* 2 along with this work; if not, write to the Free Software Foundation,
	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
	*
	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
	* or visit www.oracle.com if you need additional information or have any
	* questions.
	*/

	package javax.swing.plaf.metal;

	import java.awt.Dimension;
	import java.awt.Graphics;
	import java.awt.Color;
	import java.awt.Polygon;

	import javax.swing.*;

	import javax.swing.plaf.basic.BasicArrowButton;


	/**
	* JButton object for Metal scrollbar arrows.
	* <p>
	* <strong>Warning:</strong>
	* Serialized objects of this class will not be compatible with
	* future Swing releases. The current serialization support is
	* appropriate for short term storage or RMI between applications running
	* the same version of Swing. As of 1.4, support for long term storage
	* of all JavaBeans™
	* has been added to the <code>java.beans</code> package.
	* Please see {@link java.beans.XMLEncoder}.
	*
	* @author Tom Santos
	* @author Steve Wilson
	*/
	@SuppressWarnings("serial") // Same-version serialization only
	public class MetalScrollButton extends BasicArrowButton
	{
	private static Color shadowColor;
	private static Color highlightColor;
	private boolean isFreeStanding = false;

	private int buttonWidth;

	/**
	* Constructs an instance of {@code MetalScrollButton}.
	*
	* @param direction the direction
	* @param width the width
	* @param freeStanding the free standing value
	*/
	public MetalScrollButton( int direction, int width, boolean freeStanding )
	{
	super( direction );

	shadowColor = UIManager.getColor("ScrollBar.darkShadow");
	highlightColor = UIManager.getColor("ScrollBar.highlight");

	buttonWidth = width;
	isFreeStanding = freeStanding;
	}

	/**
	* Sets the free standing value.
	*
	* @param freeStanding the free standing value
	*/
	public void setFreeStanding( boolean freeStanding )
	{
	isFreeStanding = freeStanding;
	}

	public void paint( Graphics g )
	{
	boolean leftToRight = MetalUtils.isLeftToRight(this);
	boolean isEnabled = getParent().isEnabled();

	Color arrowColor = isEnabled ? MetalLookAndFeel.getControlInfo() : MetalLookAndFeel.getControlDisabled();
	boolean isPressed = getModel().isPressed();
	int width = getWidth();
	int height = getHeight();
	int w = width;
	int h = height;
	int arrowHeight = (height+1) / 4;
	int arrowWidth = (height+1) / 2;

	if ( isPressed )
	{
	g.setColor( MetalLookAndFeel.getControlShadow() );
	}
	else
	{
	g.setColor( getBackground() );
	}

	g.fillRect( 0, 0, width, height );

	if ( getDirection() == NORTH )
	{
	if ( !isFreeStanding ) {
	height +=1;
	g.translate( 0, -1 );
	width += 2;
	if ( !leftToRight ) {
	g.translate( -1, 0 );
	}
	}

	// Draw the arrow
	g.setColor( arrowColor );
	int startY = ((h+1) - arrowHeight) / 2;
	int startX = (w / 2);

	g.translate(startX, startY);
	g.fillPolygon(new int[]{0, 1, arrowHeight + 1, -arrowHeight},
	new int[]{0, 0, arrowHeight, arrowHeight}, 4);
	g.translate(-startX, -startY);

	if (isEnabled) {
	g.setColor( highlightColor );

	if ( !isPressed )
	{
	g.drawLine( 1, 1, width - 3, 1 );
	g.drawLine( 1, 1, 1, height - 1 );
	}

	g.drawLine( width - 1, 1, width - 1, height - 1 );

	g.setColor( shadowColor );
	g.drawLine( 0, 0, width - 2, 0 );
	g.drawLine( 0, 0, 0, height - 1 );
	g.drawLine( width - 2, 2, width - 2, height - 1 );
	} else {
	MetalUtils.drawDisabledBorder(g, 0, 0, width, height+1);
	}
	if ( !isFreeStanding ) {
	height -= 1;
	g.translate( 0, 1 );
	width -= 2;
	if ( !leftToRight ) {
	g.translate( 1, 0 );
	}
	}
	}
	else if ( getDirection() == SOUTH )
	{
	if ( !isFreeStanding ) {
	height += 1;
	width += 2;
	if ( !leftToRight ) {
	g.translate( -1, 0 );
	}
	}

	// Draw the arrow
	g.setColor( arrowColor );

	int startY = (((h+1) - arrowHeight) / 2)+ arrowHeight-1;
	int startX = (w / 2);
	g.translate(startX, startY);
	g.fillPolygon(new int[]{0, 1, arrowHeight + 1, -arrowHeight},
	new int[]{0, 0, -arrowHeight, -arrowHeight}, 4);
	g.translate(-startX, -startY);

	if (isEnabled) {
	g.setColor( highlightColor );

	if ( !isPressed )
	{
	g.drawLine( 1, 0, width - 3, 0 );
	g.drawLine( 1, 0, 1, height - 3 );
	}

	g.drawLine( 1, height - 1, width - 1, height - 1 );
	g.drawLine( width - 1, 0, width - 1, height - 1 );

	g.setColor( shadowColor );
	g.drawLine( 0, 0, 0, height - 2 );
	g.drawLine( width - 2, 0, width - 2, height - 2 );
	g.drawLine( 2, height - 2, width - 2, height - 2 );
	} else {
	MetalUtils.drawDisabledBorder(g, 0,-1, width, height+1);
	}

	if ( !isFreeStanding ) {
	height -= 1;
	width -= 2;
	if ( !leftToRight ) {
	g.translate( 1, 0 );
	}
	}
	}
	else if ( getDirection() == EAST )
	{
	if ( !isFreeStanding ) {
	height += 2;
	width += 1;
	}

	// Draw the arrow
	g.setColor( arrowColor );

	int startX = (((w+1) - arrowHeight) / 2) + arrowHeight-1;
	int startY = (h / 2);

	g.translate(startX, startY);
	g.fillPolygon(new int[]{0, 0, -arrowHeight, -arrowHeight},
	new int[]{0, 1, arrowHeight + 1, -arrowHeight}, 4);
	g.translate(-startX, -startY);

	if (isEnabled) {
	g.setColor( highlightColor );

	if ( !isPressed )
	{
	g.drawLine( 0, 1, width - 3, 1 );
	g.drawLine( 0, 1, 0, height - 3 );
	}

	g.drawLine( width - 1, 1, width - 1, height - 1 );
	g.drawLine( 0, height - 1, width - 1, height - 1 );

	g.setColor( shadowColor );
	g.drawLine( 0, 0,width - 2, 0 );
	g.drawLine( width - 2, 2, width - 2, height - 2 );
	g.drawLine( 0, height - 2, width - 2, height - 2 );
	} else {
	MetalUtils.drawDisabledBorder(g,-1,0, width+1, height);
	}
	if ( !isFreeStanding ) {
	height -= 2;
	width -= 1;
	}
	}
	else if ( getDirection() == WEST )
	{
	if ( !isFreeStanding ) {
	height += 2;
	width += 1;
	g.translate( -1, 0 );
	}

	// Draw the arrow
	g.setColor( arrowColor );

	int startX = (((w+1) - arrowHeight) / 2);
	int startY = (h / 2);

	g.translate(startX, startY);
	g.fillPolygon(new int[]{0, 0, arrowHeight, arrowHeight},
	new int[]{0, 1, arrowHeight + 1, -arrowHeight}, 4);
	g.translate(-startX, -startY);

	if (isEnabled) {
	g.setColor( highlightColor );


	if ( !isPressed )
	{
	g.drawLine( 1, 1, width - 1, 1 );
	g.drawLine( 1, 1, 1, height - 3 );
	}

	g.drawLine( 1, height - 1, width - 1, height - 1 );

	g.setColor( shadowColor );
	g.drawLine( 0, 0, width - 1, 0 );
	g.drawLine( 0, 0, 0, height - 2 );
	g.drawLine( 2, height - 2, width - 1, height - 2 );
	} else {
	MetalUtils.drawDisabledBorder(g,0,0, width+1, height);
	}

	if ( !isFreeStanding ) {
	height -= 2;
	width -= 1;
	g.translate( 1, 0 );
	}
	}
	}

	public Dimension getPreferredSize()
	{
	if ( getDirection() == NORTH )
	{
	return new Dimension( buttonWidth, buttonWidth - 2 );
	}
	else if ( getDirection() == SOUTH )
	{
	return new Dimension( buttonWidth, buttonWidth - (isFreeStanding ? 1 : 2) );
	}
	else if ( getDirection() == EAST )
	{
	return new Dimension( buttonWidth - (isFreeStanding ? 1 : 2), buttonWidth );
	}
	else if ( getDirection() == WEST )
	{
	return new Dimension( buttonWidth - 2, buttonWidth );
	}
	else
	{
	return new Dimension( 0, 0 );
	}
	}

	public Dimension getMinimumSize()
	{
	return getPreferredSize();
	}

	public Dimension getMaximumSize()
	{
	return new Dimension( Integer.MAX_VALUE, Integer.MAX_VALUE );
	}

	/**
	* Returns the width of the button.
	*
	* @return the width of the button
	*/
	public int getButtonWidth() {
	return buttonWidth;
	}
	}