/*

     dsh-iconbundle  Bundles of variants for icon images.

     Copyright (c) 2003-2013 held jointly by the individual authors.

     This library is free software; you can redistribute it and/or modify it

     under the terms of the GNU Lesser General Public License as published

     by the Free Software Foundation; either version 3 of the License, or (at

     your option) any later version.

     This library is distributed in the hope that it will be useful, but WITHOUT

     ANY WARRANTY; with out even the implied warranty of MERCHANTABILITY or

     FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public

     License for more details.

     You should have received a copy of the GNU Lesser General Public License

     along with this library;  if not, write to the Free Software Foundation,

     Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307  USA.

     > http://www.fsf.org/licensing/licenses/lgpl.html

     > http://www.opensource.org/licenses/lgpl-license.php

 */

 package org.dishevelled.iconbundle.impl;

 import java.awt.Color;

 import java.awt.Image;

 import java.awt.Paint;

 import java.awt.Shape;

 import java.awt.Stroke;

 import java.awt.Component;

 import java.awt.Graphics2D;

 import java.awt.RenderingHints;

 import java.awt.geom.Rectangle2D;

 import java.awt.image.BufferedImage;

 import javax.swing.UIManager;

 import org.dishevelled.iconbundle.IconSize;

 import org.dishevelled.iconbundle.IconState;

 import org.dishevelled.iconbundle.IconBundle;

 import org.dishevelled.iconbundle.IconTextDirection;

 /**

  * Shape icon bundle.

  *

  * @author  Michael Heuer

  */

 public final class ShapeIconBundle

     implements IconBundle

 {

     /** Shape. */

     private final Shape shape;

     /** Stroke. */

     private final Stroke stroke;

     /** Paint. */

     private final Paint fillPaint;

     /** Stroke paint. */

     private final Paint strokePaint;

     /**

      * Create a new shape icon bundle with the specified shape,

      * stroke, and paints.

      *

      * @param shape shape, must not be null

      * @param stroke stroke

      * @param fillPaint fill paint

      * @param strokePaint stroke paint

      */

     public ShapeIconBundle(final Shape shape,

                            final Stroke stroke,

                            final Paint fillPaint,

                            final Paint strokePaint)

     {

         if (shape == null)

         {

             throw new IllegalArgumentException("shape must not be null");

         }

         if (stroke == null)

         {

             throw new IllegalArgumentException("stroke must not be null");

         }

         if (fillPaint == null)

         {

             throw new IllegalArgumentException("fillPaint must not be null");

         }

         if (strokePaint == null)

         {

             throw new IllegalArgumentException("strokePaint must not be null");

         }

         this.shape = shape;

         this.stroke = stroke;

         this.fillPaint = fillPaint;

         this.strokePaint = strokePaint;

     }

     /** {@inheritDoc} */

     public Image getImage(final Component component,

                           final IconTextDirection direction,

                           final IconState state,

                           final IconSize size)

     {

         if (direction == null)

         {

             throw new IllegalArgumentException("direction must not be null");

         }

         if (state == null)

         {

             throw new IllegalArgumentException("state must not be null");

         }

         if (size == null)

         {

             throw new IllegalArgumentException("size must not be null");

         }

         int h = size.getHeight();

         int w = size.getWidth();

         BufferedImage image = new BufferedImage(w + 1, h + 1, BufferedImage.TYPE_INT_ARGB);

         Graphics2D g = image.createGraphics();

         g.setRenderingHint(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY);

         g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);

         Rectangle2D bounds = shape.getBounds2D();

         double d = 1.0d;

         if (bounds.getWidth() >= bounds.getHeight())

         {

             d = w / bounds.getWidth();

         }

         else

         {

             d = h / bounds.getHeight();

         }

         // translate to center of icon size rect

         g.translate(w / 2.0d, h / 2.0d);

         // scale shape to icon size rect

         g.scale(d, d);

         // translate center of shape to center of icon size rect

         g.translate(-1 * bounds.getCenterX(), -1 * bounds.getCenterY());

         g.setPaint(fillPaint);

         g.fill(shape);

         g.setStroke(stroke);

         g.setPaint(strokePaint);

         g.draw(shape);

         g.dispose();

         if (IconState.ACTIVE == state)

         {

             return IconBundleUtils.makeActive(image);

         }

         else if (IconState.MOUSEOVER == state)

         {

             return IconBundleUtils.makeMouseover(image);

         }

         else if (IconState.SELECTED == state)

         {

             Color selectionColor = UIManager.getColor("List.selectionBackground");

             return IconBundleUtils.makeSelected(image, selectionColor);

         }

         else if (IconState.SELECTED_MOUSEOVER == state)

         {

             Color selectionColor = UIManager.getColor("List.selectionBackground");

             return IconBundleUtils.makeSelectedMouseover(image, selectionColor);

         }

         else if (IconState.DRAGGING == state)

         {

             return IconBundleUtils.makeDragging(image);

         }

         else if (IconState.DISABLED == state)

         {

             return IconBundleUtils.makeDisabled(image);

         }

         else

         {

             return image;

         }

     }

 }