1 /*

     2  * Copyright 2002-2007 Sun Microsystems, Inc.  All Rights Reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.  Sun designates this

     8  * particular file as subject to the "Classpath" exception as provided

     9  * by Sun in the LICENSE file that accompanied this code.

    10  *

    11  * This code is distributed in the hope that it will be useful, but WITHOUT

    12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    14  * version 2 for more details (a copy is included in the LICENSE file that

    15  * accompanied this code).

    16  *

    17  * You should have received a copy of the GNU General Public License version

    18  * 2 along with this work; if not, write to the Free Software Foundation,

    19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    20  *

    21  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

    22  * CA 95054 USA or visit www.sun.com if you need additional information or

    23  * have any questions.

    24  */

    25 package org.jdesktop.swingx.designer;

    26 

    27 import org.jdesktop.swingx.designer.effects.Effect;

    28 

    29 import javax.imageio.ImageIO;

    30 import javax.swing.JOptionPane;

    31 import javax.swing.SwingUtilities;

    32 import java.awt.Color;

    33 import java.awt.FontMetrics;

    34 import java.awt.Graphics2D;

    35 import java.awt.GraphicsConfiguration;

    36 import java.awt.Image;

    37 import java.awt.geom.Rectangle2D;

    38 import java.awt.image.BufferedImage;

    39 import java.io.File;

    40 import java.io.IOException;

    41 import java.lang.ref.SoftReference;

    42 

    43 /**

    44  * TemplateLayer

    45  *

    46  * @author Created by Jasper Potts (Jul 2, 2007)

    47  */

    48 public class TemplateLayer extends Layer {

    49 

    50     private String fileName;

    51     private transient SoftReference<BufferedImage> imgRef = null;

    52 

    53     public TemplateLayer() {

    54         type = LayerType.template;

    55     }

    56 

    57     public TemplateLayer(String fileName, BufferedImage templateImage) {

    58         super("Template");

    59         this.fileName = fileName;

    60         type = LayerType.template;

    61         if (templateImage != null) {

    62             imgRef = new SoftReference<BufferedImage>(templateImage);

    63         }

    64     }

    65 

    66     // =================================================================================================================

    67     // Methods

    68 

    69     public String getName() {

    70         return super.getName();

    71     }

    72 

    73     /**

    74      * template layers are always locked

    75      *

    76      * @return <code>true</code>

    77      */

    78     public boolean isLocked() {

    79         return true;

    80     }

    81 

    82     public void add(SimpleShape shape) {

    83         throw new IllegalStateException("Template layers can't contain shapes");

    84     }

    85 

    86     public void addEffect(Effect effect) {

    87         throw new IllegalStateException("Template layers can't contain effects");

    88     }

    89 

    90     public void addLayer(int i, Layer layer) {

    91         throw new IllegalStateException("Template layers can't contain sub layers");

    92     }

    93 

    94     public void addLayer(Layer layer) {

    95         throw new IllegalStateException("Template layers can't contain sub layers");

    96     }

    97 

    98     public void paint(Graphics2D g2, double pixelSize) {

    99         if (isVisible()) {

   100             BufferedImage img = getTemplateImage();

   101             if (img != null) g2.drawImage(img, 0, 0, null);

   102         }

   103     }

   104 

   105 

   106     public Image getBuffer(GraphicsConfiguration graphicsConfiguration) {

   107         return getTemplateImage();

   108     }

   109 

   110     public BufferedImage getTemplateImage() {

   111         BufferedImage img = null;

   112         if (imgRef == null || (img = imgRef.get()) == null) {

   113 

   114             // can not access canvas

   115             final File templateImgFile = new File(getCanvas().getTemplatesDir(), fileName);

   116             System.out.println("templateImgFile = " + templateImgFile.getAbsolutePath());

   117             System.out.println("templateImgFile.exists = " + templateImgFile.exists());

   118             try {

   119                 img = ImageIO.read(templateImgFile);

   120                 imgRef = new SoftReference<BufferedImage>(img);

   121             } catch (IOException e) {

   122                 e.printStackTrace();

   123                 // create error image

   124                 img = new BufferedImage(getCanvas().getSize().width, getCanvas().getSize().height,

   125                         BufferedImage.TYPE_INT_RGB);

   126                 Graphics2D g2 = img.createGraphics();

   127                 g2.setColor(Color.RED);

   128                 g2.fillRect(0, 0, img.getWidth(), img.getHeight());

   129                 g2.setColor(Color.WHITE);

   130                 g2.setFont(g2.getFont().deriveFont(8f));

   131                 FontMetrics fontMetrics = g2.getFontMetrics();

   132                 Rectangle2D stringBounds = fontMetrics.getStringBounds("Missing Image", g2);

   133                 int offsetX = (int) ((img.getWidth() - stringBounds.getWidth()) / 2d);

   134                 int offsetY = (int) (((img.getHeight() - stringBounds.getHeight()) / 2d) - stringBounds.getY());

   135                 g2.drawString("Missing Image", offsetX, offsetY);

   136                 g2.dispose();

   137                 imgRef = new SoftReference<BufferedImage>(img);

   138             }

   139         }

   140         return img;

   141     }

   142 }