Java/Swing Components/GlassPane
Содержание
Add Image To GlassPane
<source lang="java">
/*
* Copyright (c) 2007, Romain Guy * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * Neither the name of the TimingFramework project nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
import java.awt.AWTEvent; import java.awt.Cursor; import java.awt.Graphics; import java.awt.Window; import java.awt.event.MouseEvent; import java.awt.image.BufferedImage; import java.io.IOException; import java.util.Arrays; import javax.imageio.ImageIO; import javax.swing.JComponent; import javax.swing.SwingUtilities; /**
* * @author Romain Guy */
public class GlassMouseCursor extends javax.swing.JFrame {
public GlassMouseCursor() {
initComponents();
setGlassPane(new WatermarkGlassPane());
getGlassPane().setVisible(true);
}
/** This method is called from within the constructor to
* initialize the form.
* WARNING: Do NOT modify this code. The content of this method is
* always regenerated by the Form Editor.
*/
// <editor-fold defaultstate="collapsed" desc=" Generated Code ">//GEN-BEGIN:initComponents
private void initComponents() {
javax.swing.JLabel jLabel1;
javax.swing.JLabel jLabel2;
javax.swing.JLabel jLabel3;
javax.swing.JLabel jLabel4;
javax.swing.JLabel jLabel5;
javax.swing.JList jList1;
javax.swing.JScrollPane jScrollPane1;
javax.swing.JScrollPane jScrollPane2;
javax.swing.JTextArea jTextArea1;
javax.swing.JTextField jTextField1;
javax.swing.JTextField jTextField2;
javax.swing.JTextField jTextField3;
javax.swing.JTextField jTextField4;
jScrollPane1 = new javax.swing.JScrollPane();
jList1 = new javax.swing.JList();
jLabel1 = new javax.swing.JLabel();
jLabel2 = new javax.swing.JLabel();
jLabel3 = new javax.swing.JLabel();
jLabel4 = new javax.swing.JLabel();
jLabel5 = new javax.swing.JLabel();
jTextField1 = new javax.swing.JTextField();
jTextField2 = new javax.swing.JTextField();
jTextField3 = new javax.swing.JTextField();
jTextField4 = new javax.swing.JTextField();
jScrollPane2 = new javax.swing.JScrollPane();
jTextArea1 = new javax.swing.JTextArea();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
setTitle("Glass Pane and Mouse Cursor");
jList1.setModel(new javax.swing.AbstractListModel() {
String[] strings = { "Jean-Baptiste Freymann", "Nicolas Igot", "Matthieu Grandvallet", "Fr\u00e9d\u00e9ric Hofmann" };
public int getSize() { return strings.length; }
public Object getElementAt(int i) { return strings[i]; }
});
jList1.setSelectedIndex(0);
jScrollPane1.setViewportView(jList1);
jLabel1.setText("First Name");
jLabel2.setText("Last Name");
jLabel3.setText("Phone");
jLabel4.setText("Email");
jLabel5.setText("Address");
jTextField1.setText("Jean-Baptiste");
jTextField2.setText("Freymann");
jTextField3.setText("(555) 462-1492");
jTextField4.setText("roukin@acme.ru");
jTextArea1.setColumns(15);
jTextArea1.setRows(5);
jTextArea1.setText("462 Park View Drive\n54999 Santa Clara, CA\nUSA");
jScrollPane2.setViewportView(jTextArea1);
org.jdesktop.layout.GroupLayout layout = new org.jdesktop.layout.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(layout.createSequentialGroup()
.addContainerGap()
.add(jScrollPane1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 152, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
.add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(org.jdesktop.layout.GroupLayout.TRAILING, jLabel5)
.add(org.jdesktop.layout.GroupLayout.TRAILING, jLabel4)
.add(org.jdesktop.layout.GroupLayout.TRAILING, jLabel3)
.add(org.jdesktop.layout.GroupLayout.TRAILING, jLabel2)
.add(org.jdesktop.layout.GroupLayout.TRAILING, jLabel1))
.addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
.add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING, false)
.add(jTextField1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
.add(jTextField2, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
.add(jTextField3, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
.add(jTextField4, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
.add(jScrollPane2, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 209, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE))
.addContainerGap())
);
layout.linkSize(new java.awt.ruponent[] {jScrollPane2, jTextField1, jTextField2, jTextField3, jTextField4}, org.jdesktop.layout.GroupLayout.HORIZONTAL);
layout.setVerticalGroup(
layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(layout.createSequentialGroup()
.addContainerGap()
.add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(layout.createSequentialGroup()
.add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.BASELINE)
.add(jLabel1)
.add(jTextField1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE))
.addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
.add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.BASELINE)
.add(jLabel2)
.add(jTextField2, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE))
.addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
.add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.BASELINE)
.add(jLabel3)
.add(jTextField3, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE))
.addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
.add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.BASELINE)
.add(jLabel4)
.add(jTextField4, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE))
.addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
.add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(jLabel5)
.add(jScrollPane2, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)))
.add(jScrollPane1, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, 210, Short.MAX_VALUE))
.addContainerGap())
);
java.awt.Dimension screenSize = java.awt.Toolkit.getDefaultToolkit().getScreenSize();
setBounds((screenSize.width-489)/2, (screenSize.height-266)/2, 489, 266);
}// </editor-fold>//GEN-END:initComponents
/**
* @param args the command line arguments
*/
public static void main(String args[]) {
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new GlassMouseCursor().setVisible(true);
}
});
}
// Variables declaration - do not modify//GEN-BEGIN:variables
// End of variables declaration//GEN-END:variables
} /*
* Copyright (c) 2007, Romain Guy * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * Neither the name of the TimingFramework project nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
/**
* * @author Romain Guy */
class WatermarkGlassPane extends JComponent {
private BufferedImage image = null;
/** Creates a new instance of WatermarkGlassPane */
public WatermarkGlassPane() {
}
@Override
public boolean contains(int x, int y) {
if (getMouseListeners().length == 0 &&
getMouseMotionListeners().length == 0 &&
getMouseWheelListeners().length == 0 &&
getCursor() == Cursor.getPredefinedCursor(Cursor.DEFAULT_CURSOR)) {
if (image == null) {
return false;
} else {
int imageX = getWidth() - image.getWidth();
int imageY = getHeight() - image.getHeight();
// if the mouse cursor is on a non-opaque pixel, mouse events
// are allowed
int inImageX = x - imageX;
int inImageY = y - imageY;
if (inImageX >= 0 && inImageY >= 0 &&
inImageX < image.getWidth() && inImageY < image.getHeight()) {
int color = image.getRGB(inImageX, inImageY);
return (color >> 24 & 0xFF) > 0;
}
return x > imageX && x < getWidth() &&
y > imageY && y < getHeight();
}
}
return super.contains(x, y);
}
@Override
protected void paintComponent(Graphics g) {
if (image == null) {
try {
image = ImageIO.read(getClass().getResource("watermark.png"));
} catch (IOException ex) {
ex.printStackTrace();
}
}
g.drawImage(image, getWidth() - image.getWidth(),
getHeight() - image.getHeight(), null);
}
}
</source>
GlassPane Drag Drop
<source lang="java">
/*
* Copyright (c) 2007, Romain Guy * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * Neither the name of the TimingFramework project nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
import java.awt.Color; import java.awt.Graphics; import java.awt.Point; import java.awt.Rectangle; import java.awt.image.BufferedImage; import javax.swing.JComponent; import javax.swing.SwingUtilities; import java.awt.BorderLayout; import java.awt.Color; import java.awt.Graphics; import java.awt.Graphics2D; import java.awt.MouseInfo; import java.awt.Point; import java.awt.Rectangle; import java.awt.datatransfer.DataFlavor; import java.awt.datatransfer.Transferable; import java.awt.datatransfer.UnsupportedFlavorException; import java.awt.image.BufferedImage; import java.beans.PropertyChangeEvent; import java.beans.PropertyChangeListener; import java.io.File; import java.io.IOException; import java.net.MalformedURLException; import java.util.ArrayList; import java.util.List; import javax.imageio.ImageIO; import javax.swing.DefaultListModel; import javax.swing.ImageIcon; import javax.swing.JPanel; import javax.swing.TransferHandler; import javax.swing.TransferHandler.TransferSupport; import java.awt.image.BufferedImage; import java.awt.image.ColorModel; import java.awt.image.Raster; import java.awt.image.WritableRaster; import java.awt.GraphicsConfiguration; import java.awt.Transparency; import java.awt.Graphics; import java.awt.GraphicsEnvironment; import java.awt.Graphics2D; import java.awt.RenderingHints; import java.io.IOException; import java.net.URL; import javax.imageio.ImageIO; import java.awt.Color; import java.awt.image.BufferedImage; import java.beans.PropertyChangeListener; import java.beans.PropertyChangeSupport; /**
* * @author Romain Guy */
public class GlassPaneDragAndDrop extends javax.swing.JFrame {
private PictureGlassPane glassPane = new PictureGlassPane();
public GlassPaneDragAndDrop() {
setContentPane(new JPanel(new BorderLayout()) {
private BufferedImage image = null;
@Override
public boolean isOpaque() {
return imageList.getModel().getSize() > 0;
}
@Override
protected void paintComponent(Graphics g) {
Rectangle clip = g.getClipBounds();
g.setColor(Color.WHITE);
g.fillRect(clip.x, clip.y, clip.width, clip.height);
if (image == null) {
try {
image = ImageIO.read(getClass().getResource("drop-here.png"));
} catch (IOException ioe) {
ioe.printStackTrace();
}
}
g.drawImage(image, (getWidth() - image.getWidth()) / 2,
(getHeight() - image.getHeight()) / 2, null);
}
});
initComponents();
imageList.setOpaque(false);
listScroller.setOpaque(false);
listScroller.getViewport().setOpaque(false);
setGlassPane(glassPane);
imageList.setModel(new DefaultListModel());
imageList.setTransferHandler(new FileDropHandler());
imageList.addPropertyChangeListener("dropLocation", new PropertyChangeListener() {
public void propertyChange(PropertyChangeEvent evt) {
glassPane.moveIt(MouseInfo.getPointerInfo().getLocation());
}
});
}
/** This method is called from within the constructor to
* initialize the form.
* WARNING: Do NOT modify this code. The content of this method is
* always regenerated by the Form Editor.
*/
// <editor-fold defaultstate="collapsed" desc=" Generated Code ">//GEN-BEGIN:initComponents
private void initComponents() {
javax.swing.JLabel jLabel1;
javax.swing.JLabel jLabel2;
javax.swing.JLabel jLabel3;
javax.swing.JPanel jPanel1;
javax.swing.JSeparator jSeparator1;
listScroller = new javax.swing.JScrollPane();
imageList = new javax.swing.JList();
jPanel1 = new javax.swing.JPanel();
jLabel1 = new javax.swing.JLabel();
jLabel2 = new javax.swing.JLabel();
jLabel3 = new javax.swing.JLabel();
jSeparator1 = new javax.swing.JSeparator();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
setTitle("Glass Drag and Drop");
imageList.setSelectionMode(javax.swing.ListSelectionModel.SINGLE_SELECTION);
imageList.setLayoutOrientation(javax.swing.JList.HORIZONTAL_WRAP);
imageList.setVisibleRowCount(-1);
listScroller.setViewportView(imageList);
jPanel1.setBackground(new java.awt.Color(255, 255, 255));
jLabel1.setIcon(new javax.swing.ImageIcon(getClass().getResource("app-icon.png")));
jLabel2.setFont(jLabel2.getFont().deriveFont(jLabel2.getFont().getStyle() | java.awt.Font.BOLD, jLabel2.getFont().getSize()+2));
jLabel2.setText("Glass Drag and Drop");
jLabel3.setText("Drag and drop image files (PNG or JPEG) onto the application.");
org.jdesktop.layout.GroupLayout jPanel1Layout = new org.jdesktop.layout.GroupLayout(jPanel1);
jPanel1.setLayout(jPanel1Layout);
jPanel1Layout.setHorizontalGroup(
jPanel1Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(jPanel1Layout.createSequentialGroup()
.addContainerGap()
.add(jLabel1)
.addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
.add(jPanel1Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(jLabel2)
.add(jLabel3))
.addContainerGap(158, Short.MAX_VALUE))
);
jPanel1Layout.setVerticalGroup(
jPanel1Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(jPanel1Layout.createSequentialGroup()
.addContainerGap()
.add(jPanel1Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(jPanel1Layout.createSequentialGroup()
.add(jLabel2)
.addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
.add(jLabel3))
.add(jLabel1))
.addContainerGap(org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
);
org.jdesktop.layout.GroupLayout layout = new org.jdesktop.layout.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(jPanel1, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.add(jSeparator1, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, 618, Short.MAX_VALUE)
.add(layout.createSequentialGroup()
.addContainerGap()
.add(listScroller, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, 578, Short.MAX_VALUE)
.addContainerGap())
);
layout.setVerticalGroup(
layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(layout.createSequentialGroup()
.add(jPanel1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
.add(0, 0, 0)
.add(jSeparator1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 10, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
.add(listScroller, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, 372, Short.MAX_VALUE)
.addContainerGap())
);
pack();
java.awt.Dimension screenSize = java.awt.Toolkit.getDefaultToolkit().getScreenSize();
java.awt.Dimension dialogSize = getSize();
setLocation((screenSize.width-dialogSize.width)/2,(screenSize.height-dialogSize.height)/2);
}// </editor-fold>//GEN-END:initComponents
class FileDropHandler extends TransferHandler {
private boolean imported = false;
private List<File> fileList;
public boolean canImport(TransferSupport support) {
if (!support.isDrop()) {
return false;
}
if (!support.isDataFlavorSupported(DataFlavor.javaFileListFlavor)) {
return false;
}
boolean copySupported = (COPY & support.getSourceDropActions()) == COPY;
if (copySupported) {
support.setDropAction(COPY);
if (!imported) {
Transferable t = support.getTransferable();
try {
Object data = t.getTransferData(DataFlavor.javaFileListFlavor);
this.fileList = (List<File>) data;
BufferedImage image = createImage(fileList);
if (image != null) {
Point p = MouseInfo.getPointerInfo().getLocation();
glassPane.showIt(image, p);
imported = true;
}
} catch (UnsupportedFlavorException e) {
return false;
} catch (IOException e) {
return false;
}
}
return true;
}
return false;
}
private BufferedImage createImage(List<File> files) {
List<File> imageFiles = new ArrayList<File>(3);
for (File file : files) {
if (file.getName().endsWith(".png") ||
file.getName().endsWith(".jpg")) {
imageFiles.add(file);
if (imageFiles.size() == 3) {
break;
}
}
}
if (imageFiles.size() == 0) {
return null;
}
int width = 60 + (imageFiles.size() - 1) * 10;
int height = 45 + (imageFiles.size() - 1) * 10;
BufferedImage image =
GraphicsUtilities.createCompatibleTranslucentImage(width, height);
Graphics2D g2 = image.createGraphics();
for (int i = 0; i < imageFiles.size(); i++) {
File imageFile = imageFiles.get(i);
BufferedImage externalImage = null;
try {
externalImage = GraphicsUtilities.loadCompatibleImage(imageFile.toURI().toURL());
} catch (MalformedURLException ex) {
ex.printStackTrace();
} catch (IOException ex) {
ex.printStackTrace();
}
externalImage = GraphicsUtilities.createThumbnail(externalImage, 60, 45);
g2.drawImage(externalImage, i * 10, i * 10, null);
}
g2.dispose();
return image;
}
public boolean importData(TransferSupport support) {
if (!canImport(support)) {
return false;
}
if (!support.isDataFlavorSupported(DataFlavor.javaFileListFlavor)) {
return false;
}
for (int i = 0; i < fileList.size(); i++) {
File imageFile = fileList.get(i);
BufferedImage externalImage = null;
try {
externalImage = GraphicsUtilities.loadCompatibleImage(imageFile.toURI().toURL());
externalImage = GraphicsUtilities.createThumbnail(externalImage, 120);
} catch (MalformedURLException ex) {
ex.printStackTrace();
} catch (IOException ex) {
ex.printStackTrace();
}
((DefaultListModel) imageList.getModel()).add(0, new ImageIcon(externalImage));
}
glassPane.hideIt();
imported = false;
return true;
}
}
/**
* @param args the command line arguments
*/
public static void main(String args[]) {
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new GlassPaneDragAndDrop().setVisible(true);
}
});
}
// Variables declaration - do not modify//GEN-BEGIN:variables
private javax.swing.JList imageList;
private javax.swing.JScrollPane listScroller;
// End of variables declaration//GEN-END:variables
} /*
* $Id: GraphicsUtilities.java,v 1.11 2007/04/29 22:33:33 gfx Exp $ * * Dual-licensed under LGPL (Sun and Romain Guy) and BSD (Romain Guy). * * Copyright 2005 Sun Microsystems, Inc., 4150 Network Circle, * Santa Clara, California 95054, U.S.A. All rights reserved. * * Copyright (c) 2006 Romain Guy <romain.guy@mac.ru> * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS"" AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
/**
*GraphicsUtilities contains a set of tools to perform
* common graphics operations easily. These operations are divided into
* several themes, listed below.
**
Compatible Images
**
Compatible images can, and should, be used to increase drawing * performance. This class provides a number of methods to load compatible * images directly from files or to convert existing images to compatibles * images.
**
Creating Thumbnails
**
This class provides a number of methods to easily scale down images. * Some of these methods offer a trade-off between speed and result quality and * shouuld be used all the time. They also offer the advantage of producing * compatible images, thus automatically resulting into better runtime * performance.
**
All these methodes are both faster than
* {@link java.awt.Image#getScaledInstance(int, int, int)} and produce
* better-looking results than the various drawImage() methods
* in {@link java.awt.Graphics}, which can be used for image scaling.
Image Manipulation
**
This class provides two methods to get and set pixels in a buffered image. * These methods try to avoid unmanaging the image in order to keep good * performance.
* * @author Romain Guy <romain.guy@mac.ru> * @author rbair */
class GraphicsUtilities {
private GraphicsUtilities() {
}
// Returns the graphics configuration for the primary screen
private static GraphicsConfiguration getGraphicsConfiguration() {
return GraphicsEnvironment.getLocalGraphicsEnvironment().
getDefaultScreenDevice().getDefaultConfiguration();
}
private static boolean isHeadless() {
return GraphicsEnvironment.isHeadless();
}
/**
* Returns a new BufferedImage using the same color model
* as the image passed as a parameter. The returned image is only compatible
* with the image passed as a parameter. This does not mean the returned
* image is compatible with the hardware.
*
* @param image the reference image from which the color model of the new
* image is obtained
* @return a new BufferedImage, compatible with the color model
* of image
*/
public static BufferedImage createColorModelCompatibleImage(BufferedImage image) {
ColorModel cm = image.getColorModel();
return new BufferedImage(cm,
cm.createCompatibleWritableRaster(image.getWidth(),
image.getHeight()),
cm.isAlphaPremultiplied(), null);
}
/**
* Returns a new compatible image with the same width, height and * transparency as the image specified as a parameter. That is, the * returned BufferedImage will be compatible with the graphics hardware. * If this method is called in a headless environment, then * the returned BufferedImage will be compatible with the source * image.
*
* @see java.awt.Transparency
* @see #createCompatibleImage(int, int)
* @see #createCompatibleImage(java.awt.image.BufferedImage, int, int)
* @see #createCompatibleTranslucentImage(int, int)
* @see #loadCompatibleImage(java.net.URL)
* @see #toCompatibleImage(java.awt.image.BufferedImage)
* @param image the reference image from which the dimension and the
* transparency of the new image are obtained
* @return a new compatible BufferedImage with the same
* dimension and transparency as image
*/
public static BufferedImage createCompatibleImage(BufferedImage image) {
return createCompatibleImage(image, image.getWidth(), image.getHeight());
}
/**
* Returns a new compatible image of the specified width and height, and
* the same transparency setting as the image specified as a parameter.
* That is, the returned BufferedImage is compatible with
* the graphics hardware. If the method is called in a headless
* environment, then the returned BufferedImage will be compatible with
* the source image.
*
* @see java.awt.Transparency
* @see #createCompatibleImage(java.awt.image.BufferedImage)
* @see #createCompatibleImage(int, int)
* @see #createCompatibleTranslucentImage(int, int)
* @see #loadCompatibleImage(java.net.URL)
* @see #toCompatibleImage(java.awt.image.BufferedImage)
* @param width the width of the new image
* @param height the height of the new image
* @param image the reference image from which the transparency of the new
* image is obtained
* @return a new compatible BufferedImage with the same
* transparency as image and the specified dimension
*/
public static BufferedImage createCompatibleImage(BufferedImage image,
int width, int height) {
return isHeadless() ?
new BufferedImage(width, height, image.getType()) :
getGraphicsConfiguration().createCompatibleImage(width, height,
image.getTransparency());
}
/**
* Returns a new opaque compatible image of the specified width and
* height. That is, the returned BufferedImage is compatible with
* the graphics hardware. If the method is called in a headless
* environment, then the returned BufferedImage will be compatible with
* the source image.
*
* @see #createCompatibleImage(java.awt.image.BufferedImage)
* @see #createCompatibleImage(java.awt.image.BufferedImage, int, int)
* @see #createCompatibleTranslucentImage(int, int)
* @see #loadCompatibleImage(java.net.URL)
* @see #toCompatibleImage(java.awt.image.BufferedImage)
* @param width the width of the new image
* @param height the height of the new image
* @return a new opaque compatible BufferedImage of the
* specified width and height
*/
public static BufferedImage createCompatibleImage(int width, int height) {
return isHeadless() ?
new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB) :
getGraphicsConfiguration().createCompatibleImage(width, height);
}
/**
* Returns a new translucent compatible image of the specified width and
* height. That is, the returned BufferedImage is compatible with
* the graphics hardware. If the method is called in a headless
* environment, then the returned BufferedImage will be compatible with
* the source image.
*
* @see #createCompatibleImage(java.awt.image.BufferedImage)
* @see #createCompatibleImage(java.awt.image.BufferedImage, int, int)
* @see #createCompatibleImage(int, int)
* @see #loadCompatibleImage(java.net.URL)
* @see #toCompatibleImage(java.awt.image.BufferedImage)
* @param width the width of the new image
* @param height the height of the new image
* @return a new translucent compatible BufferedImage of the
* specified width and height
*/
public static BufferedImage createCompatibleTranslucentImage(int width,
int height) {
return isHeadless() ?
new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB) :
getGraphicsConfiguration().createCompatibleImage(width, height,
Transparency.TRANSLUCENT);
}
/**
* Returns a new compatible image from a URL. The image is loaded from the * specified location and then turned, if necessary into a compatible * image.
*
* @see #createCompatibleImage(java.awt.image.BufferedImage)
* @see #createCompatibleImage(java.awt.image.BufferedImage, int, int)
* @see #createCompatibleImage(int, int)
* @see #createCompatibleTranslucentImage(int, int)
* @see #toCompatibleImage(java.awt.image.BufferedImage)
* @param resource the URL of the picture to load as a compatible image
* @return a new translucent compatible BufferedImage of the
* specified width and height
* @throws java.io.IOException if the image cannot be read or loaded
*/
public static BufferedImage loadCompatibleImage(URL resource)
throws IOException {
BufferedImage image = ImageIO.read(resource);
return toCompatibleImage(image);
}
/**
* Return a new compatible image that contains a copy of the specified * image. This method ensures an image is compatible with the hardware, * and therefore optimized for fast blitting operations.
**
If the method is called in a headless environment, then the returned
* BufferedImage will be the source image.
*
* @see #createCompatibleImage(java.awt.image.BufferedImage)
* @see #createCompatibleImage(java.awt.image.BufferedImage, int, int)
* @see #createCompatibleImage(int, int)
* @see #createCompatibleTranslucentImage(int, int)
* @see #loadCompatibleImage(java.net.URL)
* @param image the image to copy into a new compatible image
* @return a new compatible copy, with the
* same width and height and transparency and content, of image
*/
public static BufferedImage toCompatibleImage(BufferedImage image) {
if (isHeadless()) {
return image;
}
if (image.getColorModel().equals(
getGraphicsConfiguration().getColorModel())) {
return image;
}
BufferedImage compatibleImage =
getGraphicsConfiguration().createCompatibleImage(
image.getWidth(), image.getHeight(),
image.getTransparency());
Graphics g = compatibleImage.getGraphics();
g.drawImage(image, 0, 0, null);
g.dispose();
return compatibleImage;
}
/**
* Returns a thumbnail of a source image. newSize defines
* the length of the longest dimension of the thumbnail. The other
* dimension is then computed according to the dimensions ratio of the
* original picture.
This method favors speed over quality. When the new size is less than * half the longest dimension of the source image, * {@link #createThumbnail(BufferedImage, int)} or * {@link #createThumbnail(BufferedImage, int, int)} should be used instead * to ensure the quality of the result without sacrificing too much * performance.
*
* @see #createThumbnailFast(java.awt.image.BufferedImage, int, int)
* @see #createThumbnail(java.awt.image.BufferedImage, int)
* @see #createThumbnail(java.awt.image.BufferedImage, int, int)
* @param image the source image
* @param newSize the length of the largest dimension of the thumbnail
* @return a new compatible BufferedImage containing a
* thumbnail of image
* @throws IllegalArgumentException if newSize is larger than
* the largest dimension of image or <= 0
*/
public static BufferedImage createThumbnailFast(BufferedImage image,
int newSize) {
float ratio;
int width = image.getWidth();
int height = image.getHeight();
if (width > height) {
if (newSize >= width) {
throw new IllegalArgumentException("newSize must be lower than" +
" the image width");
} else if (newSize <= 0) {
throw new IllegalArgumentException("newSize must" +
" be greater than 0");
}
ratio = (float) width / (float) height;
width = newSize;
height = (int) (newSize / ratio);
} else {
if (newSize >= height) {
throw new IllegalArgumentException("newSize must be lower than" +
" the image height");
} else if (newSize <= 0) {
throw new IllegalArgumentException("newSize must" +
" be greater than 0");
}
ratio = (float) height / (float) width;
height = newSize;
width = (int) (newSize / ratio);
}
BufferedImage temp = createCompatibleImage(image, width, height);
Graphics2D g2 = temp.createGraphics();
g2.setRenderingHint(RenderingHints.KEY_INTERPOLATION,
RenderingHints.VALUE_INTERPOLATION_BILINEAR);
g2.drawImage(image, 0, 0, temp.getWidth(), temp.getHeight(), null);
g2.dispose();
return temp;
}
/**
* Returns a thumbnail of a source image.
*This method favors speed over quality. When the new size is less than * half the longest dimension of the source image, * {@link #createThumbnail(BufferedImage, int)} or * {@link #createThumbnail(BufferedImage, int, int)} should be used instead * to ensure the quality of the result without sacrificing too much * performance.
*
* @see #createThumbnailFast(java.awt.image.BufferedImage, int)
* @see #createThumbnail(java.awt.image.BufferedImage, int)
* @see #createThumbnail(java.awt.image.BufferedImage, int, int)
* @param image the source image
* @param newWidth the width of the thumbnail
* @param newHeight the height of the thumbnail
* @return a new compatible BufferedImage containing a
* thumbnail of image
* @throws IllegalArgumentException if newWidth is larger than
* the width of image or if code>newHeight</code> is larger
* than the height of image or if one of the dimensions
* is <= 0
*/
public static BufferedImage createThumbnailFast(BufferedImage image,
int newWidth, int newHeight) {
if (newWidth >= image.getWidth() ||
newHeight >= image.getHeight()) {
throw new IllegalArgumentException("newWidth and newHeight cannot" +
" be greater than the image" +
" dimensions");
} else if (newWidth <= 0 || newHeight <= 0) {
throw new IllegalArgumentException("newWidth and newHeight must" +
" be greater than 0");
}
BufferedImage temp = createCompatibleImage(image, newWidth, newHeight);
Graphics2D g2 = temp.createGraphics();
g2.setRenderingHint(RenderingHints.KEY_INTERPOLATION,
RenderingHints.VALUE_INTERPOLATION_BILINEAR);
g2.drawImage(image, 0, 0, temp.getWidth(), temp.getHeight(), null);
g2.dispose();
return temp;
}
/**
* Returns a thumbnail of a source image. newSize defines
* the length of the longest dimension of the thumbnail. The other
* dimension is then computed according to the dimensions ratio of the
* original picture.
This method offers a good trade-off between speed and quality. * The result looks better than * {@link #createThumbnailFast(java.awt.image.BufferedImage, int)} when * the new size is less than half the longest dimension of the source * image, yet the rendering speed is almost similar.
*
* @see #createThumbnailFast(java.awt.image.BufferedImage, int, int)
* @see #createThumbnailFast(java.awt.image.BufferedImage, int)
* @see #createThumbnail(java.awt.image.BufferedImage, int, int)
* @param image the source image
* @param newSize the length of the largest dimension of the thumbnail
* @return a new compatible BufferedImage containing a
* thumbnail of image
* @throws IllegalArgumentException if newSize is larger than
* the largest dimension of image or <= 0
*/
public static BufferedImage createThumbnail(BufferedImage image,
int newSize) {
int width = image.getWidth();
int height = image.getHeight();
boolean isTranslucent = image.getTransparency() != Transparency.OPAQUE;
boolean isWidthGreater = width > height;
if (isWidthGreater) {
if (newSize >= width) {
throw new IllegalArgumentException("newSize must be lower than" +
" the image width");
}
} else if (newSize >= height) {
throw new IllegalArgumentException("newSize must be lower than" +
" the image height");
}
if (newSize <= 0) {
throw new IllegalArgumentException("newSize must" +
" be greater than 0");
}
float ratioWH = (float) width / (float) height;
float ratioHW = (float) height / (float) width;
BufferedImage thumb = image;
BufferedImage temp = null;
Graphics2D g2 = null;
int previousWidth = width;
int previousHeight = height;
do {
if (isWidthGreater) {
width /= 2;
if (width < newSize) {
width = newSize;
}
height = (int) (width / ratioWH);
} else {
height /= 2;
if (height < newSize) {
height = newSize;
}
width = (int) (height / ratioHW);
}
if (temp == null || isTranslucent) {
temp = createCompatibleImage(image, width, height);
g2 = temp.createGraphics();
g2.setRenderingHint(RenderingHints.KEY_INTERPOLATION,
RenderingHints.VALUE_INTERPOLATION_BILINEAR);
}
g2.drawImage(thumb, 0, 0, width, height,
0, 0, previousWidth, previousHeight, null);
previousWidth = width;
previousHeight = height;
thumb = temp;
} while (newSize != (isWidthGreater ? width : height));
g2.dispose();
if (width != thumb.getWidth() || height != thumb.getHeight()) {
temp = createCompatibleImage(image, width, height);
g2 = temp.createGraphics();
g2.setRenderingHint(RenderingHints.KEY_INTERPOLATION,
RenderingHints.VALUE_INTERPOLATION_BILINEAR);
g2.drawImage(thumb, 0, 0, width, height, null);
g2.dispose();
thumb = temp;
}
return thumb;
}
/**
* Returns a thumbnail of a source image.
*This method offers a good trade-off between speed and quality. * The result looks better than * {@link #createThumbnailFast(java.awt.image.BufferedImage, int)} when * the new size is less than half the longest dimension of the source * image, yet the rendering speed is almost similar.
*
* @see #createThumbnailFast(java.awt.image.BufferedImage, int)
* @see #createThumbnailFast(java.awt.image.BufferedImage, int, int)
* @see #createThumbnail(java.awt.image.BufferedImage, int)
* @param image the source image
* @param newWidth the width of the thumbnail
* @param newHeight the height of the thumbnail
* @return a new compatible BufferedImage containing a
* thumbnail of image
* @throws IllegalArgumentException if newWidth is larger than
* the width of image or if code>newHeight</code> is larger
* than the height of image or if one the dimensions is not > 0
*/
public static BufferedImage createThumbnail(BufferedImage image,
int newWidth, int newHeight) {
int width = image.getWidth();
int height = image.getHeight();
boolean isTranslucent = image.getTransparency() != Transparency.OPAQUE;
if (newWidth >= width || newHeight >= height) {
throw new IllegalArgumentException("newWidth and newHeight cannot" +
" be greater than the image" +
" dimensions");
} else if (newWidth <= 0 || newHeight <= 0) {
throw new IllegalArgumentException("newWidth and newHeight must" +
" be greater than 0");
}
BufferedImage thumb = image;
BufferedImage temp = null;
Graphics2D g2 = null;
int previousWidth = width;
int previousHeight = height;
do {
if (width > newWidth) {
width /= 2;
if (width < newWidth) {
width = newWidth;
}
}
if (height > newHeight) {
height /= 2;
if (height < newHeight) {
height = newHeight;
}
}
if (temp == null || isTranslucent) {
temp = createCompatibleImage(image, width, height);
g2 = temp.createGraphics();
g2.setRenderingHint(RenderingHints.KEY_INTERPOLATION,
RenderingHints.VALUE_INTERPOLATION_BILINEAR);
}
g2.drawImage(thumb, 0, 0, width, height,
0, 0, previousWidth, previousHeight, null);
previousWidth = width;
previousHeight = height;
thumb = temp;
} while (width != newWidth || height != newHeight);
g2.dispose();
if (width != thumb.getWidth() || height != thumb.getHeight()) {
temp = createCompatibleImage(image, width, height);
g2 = temp.createGraphics();
g2.setRenderingHint(RenderingHints.KEY_INTERPOLATION,
RenderingHints.VALUE_INTERPOLATION_BILINEAR);
g2.drawImage(thumb, 0, 0, width, height, null);
g2.dispose();
thumb = temp;
}
return thumb;
}
/**
* Returns an array of pixels, stored as integers, from a
* BufferedImage. The pixels are grabbed from a rectangular
* area defined by a location and two dimensions. Calling this method on
* an image of type different from BufferedImage.TYPE_INT_ARGB
* and BufferedImage.TYPE_INT_RGB will unmanage the image.
*
* @param img the source image
* @param x the x location at which to start grabbing pixels
* @param y the y location at which to start grabbing pixels
* @param w the width of the rectangle of pixels to grab
* @param h the height of the rectangle of pixels to grab
* @param pixels a pre-allocated array of pixels of size w*h; can be null
* @return pixels if non-null, a new array of integers
* otherwise
* @throws IllegalArgumentException is pixels is non-null and
* of length < w*h
*/
public static int[] getPixels(BufferedImage img,
int x, int y, int w, int h, int[] pixels) {
if (w == 0 || h == 0) {
return new int[0];
}
if (pixels == null) {
pixels = new int[w * h];
} else if (pixels.length < w * h) {
throw new IllegalArgumentException("pixels array must have a length" +
" >= w*h");
}
int imageType = img.getType();
if (imageType == BufferedImage.TYPE_INT_ARGB ||
imageType == BufferedImage.TYPE_INT_RGB) {
Raster raster = img.getRaster();
return (int[]) raster.getDataElements(x, y, w, h, pixels);
}
// Unmanages the image
return img.getRGB(x, y, w, h, pixels, 0, w);
}
/**
* Writes a rectangular area of pixels in the destination
* BufferedImage. Calling this method on
* an image of type different from BufferedImage.TYPE_INT_ARGB
* and BufferedImage.TYPE_INT_RGB will unmanage the image.
*
* @param img the destination image
* @param x the x location at which to start storing pixels
* @param y the y location at which to start storing pixels
* @param w the width of the rectangle of pixels to store
* @param h the height of the rectangle of pixels to store
* @param pixels an array of pixels, stored as integers
* @throws IllegalArgumentException is pixels is non-null and
* of length < w*h
*/
public static void setPixels(BufferedImage img,
int x, int y, int w, int h, int[] pixels) {
if (pixels == null || w == 0 || h == 0) {
return;
} else if (pixels.length < w * h) {
throw new IllegalArgumentException("pixels array must have a length" +
" >= w*h");
}
int imageType = img.getType();
if (imageType == BufferedImage.TYPE_INT_ARGB ||
imageType == BufferedImage.TYPE_INT_RGB) {
WritableRaster raster = img.getRaster();
raster.setDataElements(x, y, w, h, pixels);
} else {
// Unmanages the image
img.setRGB(x, y, w, h, pixels, 0, w);
}
}
} /*
* Copyright (c) 2007, Romain Guy * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * Neither the name of the TimingFramework project nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
/**
* * @author Romain Guy */
class PictureGlassPane extends JComponent {
private BufferedImage image;
private Point location;
private BufferedImage shadow;
public PictureGlassPane() {
}
public void moveIt(Point location) {
Point oldLocation = this.location;
SwingUtilities.convertPointFromScreen(location, this);
this.location = location;
Rectangle newClip = new Rectangle(location.x - image.getWidth() / 2, location.y - image.getHeight() / 2,
image.getWidth(), image.getHeight());
newClip.add(new Rectangle(oldLocation.x - image.getWidth() / 2, oldLocation.y - image.getHeight() / 2,
image.getWidth(), image.getHeight()));
newClip.add(new Rectangle(oldLocation.x - image.getWidth() / 2, oldLocation.y - image.getHeight() / 2,
shadow.getWidth(), shadow.getHeight()));
newClip.add(new Rectangle(location.x - image.getWidth() / 2, location.y - image.getHeight() / 2,
shadow.getWidth(), shadow.getHeight()));
repaint(newClip);
}
public void hideIt() {
setVisible(false);
}
public void showIt(BufferedImage image, Point location) {
this.image = image;
this.shadow = new ShadowRenderer(5, 0.3f, Color.BLACK).createShadow(image);
SwingUtilities.convertPointFromScreen(location, this);
this.location = location;
setVisible(true);
}
@Override
protected void paintComponent(Graphics g) {
if (image != null && location != null) {
int x = location.x - image.getWidth() / 2;
int y = location.y - image.getHeight() / 2;
g.drawImage(shadow, x, y, null);
g.drawImage(image, x, y, null);
}
}
} /*
* $Id: ShadowRenderer.java,v 1.1 2007/01/15 23:39:23 gfx Exp $ * * Copyright 2006 Sun Microsystems, Inc., 4150 Network Circle, * Santa Clara, California 95054, U.S.A. All rights reserved. * * Licensed under LGPL. */
/**
*A shadow renderer generates a drop shadow for any given picture, respecting * the transparency channel if present. The resulting picture contains the * shadow only and to create a drop shadow effect you will need to stack the * original picture and the shadow generated by the renderer.
*Shadow Properties
*A shadow is defined by three properties: *
-
*
- size: The size, in pixels, of the shadow. This property also * defines the fuzzyness. *
- opacity: The opacity, between 0.0 and 1.0, of the shadow. *
- color: The color of the shadow. Shadows are not meant to be * black only. *
* You can set these properties using the provided mutaters or the appropriate * constructor. Here are two ways of creating a green shadow of size 10 and * with an opacity of 50%:*
* ShadowRenderer renderer = new ShadowRenderer(10, 0.5f, Color.GREEN); * // .. * renderer = new ShadowRenderer(); * renderer.setSize(10); * renderer.setOpacity(0.5f); * renderer.setColor(Color.GREEN); *
* The default constructor provides the following default values:*
-
*
- size: 5 pixels *
- opacity: 50% *
- color: Black *
Generating a Shadow
*A shadow is generated as a BufferedImage from another
* BufferedImage. Once the renderer is set up, you must call
* {@link #createShadow} to actually generate the shadow:
*
* ShadowRenderer renderer = new ShadowRenderer(); * // renderer setup * BufferedImage shadow = renderer.createShadow(bufferedImage); **
The generated image dimensions are computed as following:
** width = imageWidth + 2 * shadowSize * height = imageHeight + 2 * shadowSize **
Properties Changes
*This renderer allows to register property change listeners with * {@link #addPropertyChangeListener}. Listening to properties changes is very * useful when you emebed the renderer in a graphical component and give the API * user the ability to access the renderer. By listening to properties changes, * you can easily repaint the component when needed.
*Threading Issues
*ShadowRenderer is not guaranteed to be thread-safe.
* * @author Romain Guy <romain.guy@mac.ru> * @author Sebastien Petrucci */
class ShadowRenderer {
/***
Identifies a change to the size used to render the shadow.
*When the property change event is fired, the old value and the new
* value are provided as Integer instances.
*/ public static final String SIZE_CHANGED_PROPERTY = "shadow_size"; /***
Identifies a change to the opacity used to render the shadow.
*When the property change event is fired, the old value and the new
* value are provided as Float instances.
*/ public static final String OPACITY_CHANGED_PROPERTY = "shadow_opacity"; /***
Identifies a change to the color used to render the shadow.
*/ public static final String COLOR_CHANGED_PROPERTY = "shadow_color"; // size of the shadow in pixels (defines the fuzziness) private int size = 5; // opacity of the shadow private float opacity = 0.5f; // color of the shadow private Color color = Color.BLACK; // notifies listeners of properties changes private PropertyChangeSupport changeSupport; /***
Creates a default good looking shadow generator. * The default shadow renderer provides the following default values: *
-
*
- size: 5 pixels *
- opacity: 50% *
- color: Black *
These properties provide a regular, good looking shadow.
*/
public ShadowRenderer() {
this(5, 0.5f, Color.BLACK);
}
/**
* A shadow renderer needs three properties to generate shadows. * These properties are:
*-
*
- size: The size, in pixels, of the shadow. This property also * defines the fuzzyness. *
- opacity: The opacity, between 0.0 and 1.0, of the shadow. *
- color: The color of the shadow. Shadows are not meant to be * black only. *
* @param size the size of the shadow in pixels. Defines the fuzziness.
* @param opacity the opacity of the shadow.
* @param color the color of the shadow.
*/
public ShadowRenderer(final int size, final float opacity, final Color color) {
//noinspection ThisEscapedInObjectConstruction
changeSupport = new PropertyChangeSupport(this);
setSize(size);
setOpacity(opacity);
setColor(color);
}
/**
* Add a PropertyChangeListener to the listener list. The listener is
* registered for all properties. The same listener object may be added
* more than once, and will be called as many times as it is added. If
* listener is null, no exception is thrown and no action
* is taken.
* @param listener the PropertyChangeListener to be added
*/
public void addPropertyChangeListener(PropertyChangeListener listener) {
changeSupport.addPropertyChangeListener(listener);
}
/**
* Remove a PropertyChangeListener from the listener list. This removes
* a PropertyChangeListener that was registered for all properties. If
* listener was added more than once to the same event source,
* it will be notified one less time after being removed. If
* listener is null, or was never added, no exception is thrown
* and no action is taken.
* @param listener the PropertyChangeListener to be removed
*/
public void removePropertyChangeListener(PropertyChangeListener listener) {
changeSupport.removePropertyChangeListener(listener);
}
/**
* Gets the color used by the renderer to generate shadows.
* @return this renderer"s shadow color
*/
public Color getColor() {
return color;
}
/**
* Sets the color used by the renderer to generate shadows.
*Consecutive calls to {@link #createShadow} will all use this color * until it is set again.
*If the color provided is null, the previous color will be retained.
* @param shadowColor the generated shadows color
*/
public void setColor(final Color shadowColor) {
if (shadowColor != null) {
Color oldColor = this.color;
this.color = shadowColor;
changeSupport.firePropertyChange(COLOR_CHANGED_PROPERTY,
oldColor,
this.color);
}
}
/**
* Gets the opacity used by the renderer to generate shadows.
*The opacity is comprised between 0.0f and 1.0f; 0.0f being fully * transparent and 1.0f fully opaque.
* @return this renderer"s shadow opacity
*/
public float getOpacity() {
return opacity;
}
/**
* Sets the opacity used by the renderer to generate shadows.
*Consecutive calls to {@link #createShadow} will all use this opacity * until it is set again.
*The opacity is comprised between 0.0f and 1.0f; 0.0f being fully * transparent and 1.0f fully opaque. If you provide a value out of these * boundaries, it will be restrained to the closest boundary.
* @param shadowOpacity the generated shadows opacity
*/
public void setOpacity(final float shadowOpacity) {
float oldOpacity = this.opacity;
if (shadowOpacity < 0.0) {
this.opacity = 0.0f;
} else if (shadowOpacity > 1.0f) {
this.opacity = 1.0f;
} else {
this.opacity = shadowOpacity;
}
changeSupport.firePropertyChange(OPACITY_CHANGED_PROPERTY,
oldOpacity,
this.opacity);
}
/**
* Gets the size in pixel used by the renderer to generate shadows.
* @return this renderer"s shadow size
*/
public int getSize() {
return size;
}
/**
* Sets the size, in pixels, used by the renderer to generate shadows.
*The size defines the blur radius applied to the shadow to create the * fuzziness.
*There is virtually no limit to the size. The size cannot be negative. * If you provide a negative value, the size will be 0 instead.
* @param shadowSize the generated shadows size in pixels (fuzziness)
*/
public void setSize(final int shadowSize) {
int oldSize = this.size;
if (shadowSize < 0) {
this.size = 0;
} else {
this.size = shadowSize;
}
changeSupport.firePropertyChange(SIZE_CHANGED_PROPERTY,
new Integer(oldSize),
new Integer(this.size));
}
/**
* Generates the shadow for a given picture and the current properties * of the renderer.
*The generated image dimensions are computed as following:
*
* width = imageWidth + 2 * shadowSize
* height = imageHeight + 2 * shadowSize
*
* @param image the picture from which the shadow must be cast
* @return the picture containing the shadow of image
*/
public BufferedImage createShadow(final BufferedImage image) {
// Written by Sesbastien Petrucci
int shadowSize = size * 2;
int srcWidth = image.getWidth();
int srcHeight = image.getHeight();
int dstWidth = srcWidth + shadowSize;
int dstHeight = srcHeight + shadowSize;
int left = size;
int right = shadowSize - left;
int yStop = dstHeight - right;
int shadowRgb = color.getRGB() & 0x00FFFFFF;
int[] aHistory = new int[shadowSize];
int historyIdx;
int aSum;
BufferedImage dst = new BufferedImage(dstWidth, dstHeight,
BufferedImage.TYPE_INT_ARGB);
int[] dstBuffer = new int[dstWidth * dstHeight];
int[] srcBuffer = new int[srcWidth * srcHeight];
GraphicsUtilities.getPixels(image, 0, 0, srcWidth, srcHeight, srcBuffer);
int lastPixelOffset = right * dstWidth;
float hSumDivider = 1.0f / shadowSize;
float vSumDivider = opacity / shadowSize;
int[] hSumLookup = new int[256 * shadowSize];
for (int i = 0; i < hSumLookup.length; i++) {
hSumLookup[i] = (int) (i * hSumDivider);
}
int[] vSumLookup = new int[256 * shadowSize];
for (int i = 0; i < vSumLookup.length; i++) {
vSumLookup[i] = (int) (i * vSumDivider);
}
int srcOffset;
// horizontal pass : extract the alpha mask from the source picture and
// blur it into the destination picture
for (int srcY = 0, dstOffset = left * dstWidth; srcY < srcHeight; srcY++) {
// first pixels are empty
for (historyIdx = 0; historyIdx < shadowSize; ) {
aHistory[historyIdx++] = 0;
}
aSum = 0;
historyIdx = 0;
srcOffset = srcY * srcWidth;
// compute the blur average with pixels from the source image
for (int srcX = 0; srcX < srcWidth; srcX++) {
int a = hSumLookup[aSum];
dstBuffer[dstOffset++] = a << 24; // store the alpha value only
// the shadow color will be added in the next pass
aSum -= aHistory[historyIdx]; // substract the oldest pixel from the sum
// extract the new pixel ...
a = srcBuffer[srcOffset + srcX] >>> 24;
aHistory[historyIdx] = a; // ... and store its value into history
aSum += a; // ... and add its value to the sum
if (++historyIdx >= shadowSize) {
historyIdx -= shadowSize;
}
}
// blur the end of the row - no new pixels to grab
for (int i = 0; i < shadowSize; i++) {
int a = hSumLookup[aSum];
dstBuffer[dstOffset++] = a << 24;
// substract the oldest pixel from the sum ... and nothing new to add !
aSum -= aHistory[historyIdx];
if (++historyIdx >= shadowSize) {
historyIdx -= shadowSize;
}
}
}
// vertical pass
for (int x = 0, bufferOffset = 0; x < dstWidth; x++, bufferOffset = x) {
aSum = 0;
// first pixels are empty
for (historyIdx = 0; historyIdx < left;) {
aHistory[historyIdx++] = 0;
}
// and then they come from the dstBuffer
for (int y = 0; y < right; y++, bufferOffset += dstWidth) {
int a = dstBuffer[bufferOffset] >>> 24; // extract alpha
aHistory[historyIdx++] = a; // store into history
aSum += a; // and add to sum
}
bufferOffset = x;
historyIdx = 0;
// compute the blur avera`ge with pixels from the previous pass
for (int y = 0; y < yStop; y++, bufferOffset += dstWidth) {
int a = vSumLookup[aSum];
dstBuffer[bufferOffset] = a << 24 | shadowRgb; // store alpha value + shadow color
aSum -= aHistory[historyIdx]; // substract the oldest pixel from the sum
a = dstBuffer[bufferOffset + lastPixelOffset] >>> 24; // extract the new pixel ...
aHistory[historyIdx] = a; // ... and store its value into history
aSum += a; // ... and add its value to the sum
if (++historyIdx >= shadowSize) {
historyIdx -= shadowSize;
}
}
// blur the end of the column - no pixels to grab anymore
for (int y = yStop; y < dstHeight; y++, bufferOffset += dstWidth) {
int a = vSumLookup[aSum];
dstBuffer[bufferOffset] = a << 24 | shadowRgb;
aSum -= aHistory[historyIdx]; // substract the oldest pixel from the sum
if (++historyIdx >= shadowSize) {
historyIdx -= shadowSize;
}
}
}
GraphicsUtilities.setPixels(dst, 0, 0, dstWidth, dstHeight, dstBuffer);
return dst;
}
}
</source>
GlassPane Intercepts Event
<source lang="java">
/*
* Copyright (c) 2007, Romain Guy * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * Neither the name of the TimingFramework project nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
import java.awt.AlphaComposite; import java.awt.Color; import java.awt.ruposite; import java.awt.Font; import java.awt.FontMetrics; import java.awt.GradientPaint; import java.awt.Graphics; import java.awt.Graphics2D; import java.awt.LinearGradientPaint; import java.awt.Paint; import java.awt.Rectangle; import java.awt.RenderingHints; import java.awt.event.ruponentAdapter; import java.awt.event.ruponentEvent; import java.awt.event.KeyAdapter; import java.awt.event.MouseAdapter; import java.awt.event.MouseMotionAdapter; import javax.swing.JComponent; /**
* * @author Romain Guy */
public class GlassPaneInterceptEvent extends javax.swing.JFrame {
private static final int MAX_DELAY = 300;
private ProgressGlassPane glassPane;
public GlassPaneInterceptEvent() {
initComponents();
setGlassPane(glassPane = new ProgressGlassPane());
}
/** This method is called from within the constructor to
* initialize the form.
* WARNING: Do NOT modify this code. The content of this method is
* always regenerated by the Form Editor.
*/
// <editor-fold defaultstate="collapsed" desc=" Generated Code ">//GEN-BEGIN:initComponents
private void initComponents() {
javax.swing.JButton buttonDownload;
javax.swing.JLabel jLabel1;
javax.swing.JScrollPane jScrollPane1;
jLabel1 = new javax.swing.JLabel();
buttonDownload = new javax.swing.JButton();
jScrollPane1 = new javax.swing.JScrollPane();
filesTable = new javax.swing.JTable();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
setTitle("Glass Pane Painting");
setResizable(false);
jLabel1.setText("Pick a file for download");
buttonDownload.setText("Start Download");
buttonDownload.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
buttonDownloadActionPerformed(evt);
}
});
filesTable.setModel(new javax.swing.table.DefaultTableModel(
new Object [][] {
{"aerith.png", "/www/progx/images/", "PNG", "5/17/2006"},
{"blog.html", "/www/progx", "HTML", "3/1/2006"},
{"index.html", "/www/progx", "HTML", "9/12/2006"},
{"pictures.zip", "/www/progx", "ZIP", "10/8/2006"}
},
new String [] {
"Name", "Path", "Type", "Date"
}
));
jScrollPane1.setViewportView(filesTable);
org.jdesktop.layout.GroupLayout layout = new org.jdesktop.layout.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(org.jdesktop.layout.GroupLayout.TRAILING, layout.createSequentialGroup()
.add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.TRAILING)
.add(layout.createSequentialGroup()
.addContainerGap()
.add(buttonDownload))
.add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(layout.createSequentialGroup()
.addContainerGap()
.add(jLabel1))
.add(layout.createSequentialGroup()
.addContainerGap()
.add(jScrollPane1, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, 513, Short.MAX_VALUE))))
.addContainerGap())
);
layout.setVerticalGroup(
layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(layout.createSequentialGroup()
.add(20, 20, 20)
.add(jLabel1)
.addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
.add(jScrollPane1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 275, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
.add(buttonDownload)
.addContainerGap(org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
);
java.awt.Dimension screenSize = java.awt.Toolkit.getDefaultToolkit().getScreenSize();
setBounds((screenSize.width-553)/2, (screenSize.height-394)/2, 553, 394);
}// </editor-fold>//GEN-END:initComponents
private void buttonDownloadActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_buttonDownloadActionPerformed
getGlassPane().setVisible(true);
startDownloadThread();
}//GEN-LAST:event_buttonDownloadActionPerformed
private void startDownloadThread() {
Thread downloader = new Thread(new Runnable() {
public void run() {
int i = 0;
do {
try {
Thread.sleep(30 + (int) (Math.random() * MAX_DELAY));
} catch (InterruptedException ex) {
// who cares here?
}
i += (int) (Math.random() * 5);
glassPane.setProgress(i);
} while (i < 100);
glassPane.setVisible(false);
glassPane.setProgress(0);
}
});
downloader.start();
}
/**
* @param args the command line arguments
*/
public static void main(String args[]) {
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new GlassPaneInterceptEvent().setVisible(true);
}
});
}
// Variables declaration - do not modify//GEN-BEGIN:variables
private javax.swing.JTable filesTable;
// End of variables declaration//GEN-END:variables
} /*
* Copyright (c) 2007, Romain Guy * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * Neither the name of the TimingFramework project nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
/**
* * @author Romain Guy */
class ProgressGlassPane extends JComponent {
private static final int BAR_WIDTH = 200;
private static final int BAR_HEIGHT = 10;
private static final Color TEXT_COLOR = new Color(0x333333);
private static final Color BORDER_COLOR = new Color(0x333333);
private static final float[] GRADIENT_FRACTIONS = new float[] {
0.0f, 0.499f, 0.5f, 1.0f
};
private static final Color[] GRADIENT_COLORS = new Color[] {
Color.GRAY, Color.DARK_GRAY, Color.BLACK, Color.GRAY
};
private static final Color GRADIENT_COLOR2 = Color.WHITE;
private static final Color GRADIENT_COLOR1 = Color.GRAY;
private String message = "Downloading file...";
private int progress = 0;
/** Creates a new instance of ProgressGlassPane */
public ProgressGlassPane() {
// blocks all user input
addMouseListener(new MouseAdapter() { });
addMouseMotionListener(new MouseMotionAdapter() { });
addKeyListener(new KeyAdapter() { });
setFocusTraversalKeysEnabled(false);
addComponentListener(new ComponentAdapter() {
public void componentShown(ComponentEvent evt) {
requestFocusInWindow();
}
});
setBackground(Color.WHITE);
setFont(new Font("Default", Font.BOLD, 16));
}
public int getProgress() {
return progress;
}
public void setProgress(int progress) {
int oldProgress = this.progress;
this.progress = progress;
// computes the damaged area
FontMetrics metrics = getGraphics().getFontMetrics(getFont());
int w = (int) (BAR_WIDTH * ((float) oldProgress / 100.0f));
int x = w + (getWidth() - BAR_WIDTH) / 2;
int y = (getHeight() - BAR_HEIGHT) / 2;
y += metrics.getDescent() / 2;
w = (int) (BAR_WIDTH * ((float) progress / 100.0f)) - w;
int h = BAR_HEIGHT;
repaint(x, y, w, h);
}
@Override
protected void paintComponent(Graphics g) {
// enables anti-aliasing
Graphics2D g2 = (Graphics2D) g;
g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_ON);
// gets the current clipping area
Rectangle clip = g.getClipBounds();
// sets a 65% translucent composite
AlphaComposite alpha = AlphaComposite.SrcOver.derive(0.65f);
Composite composite = g2.getComposite();
g2.setComposite(alpha);
// fills the background
g2.setColor(getBackground());
g2.fillRect(clip.x, clip.y, clip.width, clip.height);
// centers the progress bar on screen
FontMetrics metrics = g.getFontMetrics();
int x = (getWidth() - BAR_WIDTH) / 2;
int y = (getHeight() - BAR_HEIGHT - metrics.getDescent()) / 2;
// draws the text
g2.setColor(TEXT_COLOR);
g2.drawString(message, x, y);
// goes to the position of the progress bar
y += metrics.getDescent();
// computes the size of the progress indicator
int w = (int) (BAR_WIDTH * ((float) progress / 100.0f));
int h = BAR_HEIGHT;
// draws the content of the progress bar
Paint paint = g2.getPaint();
// bar"s background
Paint gradient = new GradientPaint(x, y, GRADIENT_COLOR1,
x, y + h, GRADIENT_COLOR2);
g2.setPaint(gradient);
g2.fillRect(x, y, BAR_WIDTH, BAR_HEIGHT);
// actual progress
gradient = new LinearGradientPaint(x, y, x, y + h,
GRADIENT_FRACTIONS, GRADIENT_COLORS);
g2.setPaint(gradient);
g2.fillRect(x, y, w, h);
g2.setPaint(paint);
// draws the progress bar border
g2.drawRect(x, y, BAR_WIDTH, BAR_HEIGHT);
g2.setComposite(composite);
}
}
</source>
Glasspane Painting
<source lang="java">
/*
* Copyright (c) 2007, Romain Guy * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * Neither the name of the TimingFramework project nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
/**
* * @author Romain Guy */ import java.awt.AlphaComposite;
import java.awt.Color; import java.awt.ruposite; import java.awt.Font; import java.awt.FontMetrics; import java.awt.GradientPaint; import java.awt.Graphics; import java.awt.Graphics2D; import java.awt.LinearGradientPaint; import java.awt.Paint; import java.awt.Rectangle; import java.awt.RenderingHints; import javax.swing.JComponent; public class GlassPanePainting extends javax.swing.JFrame {
private static final int MAX_DELAY = 300;
private ProgressGlassPane glassPane;
public GlassPanePainting() {
initComponents();
setGlassPane(glassPane = new ProgressGlassPane());
}
/** This method is called from within the constructor to
* initialize the form.
* WARNING: Do NOT modify this code. The content of this method is
* always regenerated by the Form Editor.
*/
// <editor-fold defaultstate="collapsed" desc=" Generated Code ">//GEN-BEGIN:initComponents
private void initComponents() {
javax.swing.JButton buttonDownload;
javax.swing.JLabel jLabel1;
javax.swing.JScrollPane jScrollPane1;
jLabel1 = new javax.swing.JLabel();
buttonDownload = new javax.swing.JButton();
jScrollPane1 = new javax.swing.JScrollPane();
filesTable = new javax.swing.JTable();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
setTitle("Glass Pane Painting");
setResizable(false);
jLabel1.setText("Pick a file for download");
buttonDownload.setText("Start Download");
buttonDownload.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
buttonDownloadActionPerformed(evt);
}
});
filesTable.setModel(new javax.swing.table.DefaultTableModel(
new Object [][] {
{"aerith.png", "/www/progx/images/", "PNG", "5/17/2006"},
{"blog.html", "/www/progx", "HTML", "3/1/2006"},
{"index.html", "/www/progx", "HTML", "9/12/2006"},
{"pictures.zip", "/www/progx", "ZIP", "10/8/2006"}
},
new String [] {
"Name", "Path", "Type", "Date"
}
));
jScrollPane1.setViewportView(filesTable);
org.jdesktop.layout.GroupLayout layout = new org.jdesktop.layout.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(org.jdesktop.layout.GroupLayout.TRAILING, layout.createSequentialGroup()
.add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.TRAILING)
.add(layout.createSequentialGroup()
.addContainerGap()
.add(buttonDownload))
.add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(layout.createSequentialGroup()
.addContainerGap()
.add(jLabel1))
.add(layout.createSequentialGroup()
.addContainerGap()
.add(jScrollPane1, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, 513, Short.MAX_VALUE))))
.addContainerGap())
);
layout.setVerticalGroup(
layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(layout.createSequentialGroup()
.add(20, 20, 20)
.add(jLabel1)
.addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
.add(jScrollPane1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 275, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
.add(buttonDownload)
.addContainerGap(org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
);
java.awt.Dimension screenSize = java.awt.Toolkit.getDefaultToolkit().getScreenSize();
setBounds((screenSize.width-553)/2, (screenSize.height-394)/2, 553, 394);
}// </editor-fold>//GEN-END:initComponents
private void buttonDownloadActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_buttonDownloadActionPerformed
getGlassPane().setVisible(true);
startDownloadThread();
}//GEN-LAST:event_buttonDownloadActionPerformed
private void startDownloadThread() {
Thread downloader = new Thread(new Runnable() {
public void run() {
int i = 0;
do {
try {
Thread.sleep(30 + (int) (Math.random() * MAX_DELAY));
} catch (InterruptedException ex) {
// who cares here?
}
i += (int) (Math.random() * 5);
glassPane.setProgress(i);
} while (i < 100);
glassPane.setVisible(false);
glassPane.setProgress(0);
}
});
downloader.start();
}
/**
* @param args the command line arguments
*/
public static void main(String args[]) {
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new GlassPanePainting().setVisible(true);
}
});
}
// Variables declaration - do not modify//GEN-BEGIN:variables
private javax.swing.JTable filesTable;
// End of variables declaration//GEN-END:variables
} /*
* Copyright (c) 2007, Romain Guy * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * Neither the name of the TimingFramework project nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
/**
* * @author Romain Guy */
class ProgressGlassPane extends JComponent {
private static final int BAR_WIDTH = 200;
private static final int BAR_HEIGHT = 10;
private static final Color TEXT_COLOR = new Color(0x333333);
private static final Color BORDER_COLOR = new Color(0x333333);
private static final float[] GRADIENT_FRACTIONS = new float[] {
0.0f, 0.499f, 0.5f, 1.0f
};
private static final Color[] GRADIENT_COLORS = new Color[] {
Color.GRAY, Color.DARK_GRAY, Color.BLACK, Color.GRAY
};
private static final Color GRADIENT_COLOR2 = Color.WHITE;
private static final Color GRADIENT_COLOR1 = Color.GRAY;
private String message = "Downloading file...";
private int progress = 0;
public ProgressGlassPane() {
setBackground(Color.WHITE);
setFont(new Font("Default", Font.BOLD, 16));
}
public int getProgress() {
return progress;
}
public void setProgress(int progress) {
int oldProgress = this.progress;
this.progress = progress;
// computes the damaged area
FontMetrics metrics = getGraphics().getFontMetrics(getFont());
int w = (int) (BAR_WIDTH * ((float) oldProgress / 100.0f));
int x = w + (getWidth() - BAR_WIDTH) / 2;
int y = (getHeight() - BAR_HEIGHT) / 2;
y += metrics.getDescent() / 2;
w = (int) (BAR_WIDTH * ((float) progress / 100.0f)) - w;
int h = BAR_HEIGHT;
repaint(x, y, w, h);
}
@Override
protected void paintComponent(Graphics g) {
// enables anti-aliasing
Graphics2D g2 = (Graphics2D) g;
g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_ON);
// gets the current clipping area
Rectangle clip = g.getClipBounds();
// sets a 65% translucent composite
AlphaComposite alpha = AlphaComposite.SrcOver.derive(0.65f);
Composite composite = g2.getComposite();
g2.setComposite(alpha);
// fills the background
g2.setColor(getBackground());
g2.fillRect(clip.x, clip.y, clip.width, clip.height);
// centers the progress bar on screen
FontMetrics metrics = g.getFontMetrics();
int x = (getWidth() - BAR_WIDTH) / 2;
int y = (getHeight() - BAR_HEIGHT - metrics.getDescent()) / 2;
// draws the text
g2.setColor(TEXT_COLOR);
g2.drawString(message, x, y);
// goes to the position of the progress bar
y += metrics.getDescent();
// computes the size of the progress indicator
int w = (int) (BAR_WIDTH * ((float) progress / 100.0f));
int h = BAR_HEIGHT;
// draws the content of the progress bar
Paint paint = g2.getPaint();
// bar"s background
Paint gradient = new GradientPaint(x, y, GRADIENT_COLOR1,
x, y + h, GRADIENT_COLOR2);
g2.setPaint(gradient);
g2.fillRect(x, y, BAR_WIDTH, BAR_HEIGHT);
// actual progress
gradient = new LinearGradientPaint(x, y, x, y + h,
GRADIENT_FRACTIONS, GRADIENT_COLORS);
g2.setPaint(gradient);
g2.fillRect(x, y, w, h);
g2.setPaint(paint);
// draws the progress bar border
g2.drawRect(x, y, BAR_WIDTH, BAR_HEIGHT);
g2.setComposite(composite);
}
}
</source>
