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 * ofimage
*/ 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 asimage
*/ 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 asimage
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 ofimage
* @throws IllegalArgumentException ifnewSize
is larger than * the largest dimension ofimage
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 ofimage
* @throws IllegalArgumentException ifnewWidth
is larger than * the width ofimage
or if code>newHeight</code> is larger * than the height ofimage
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 ofimage
* @throws IllegalArgumentException ifnewSize
is larger than * the largest dimension ofimage
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 ofimage
* @throws IllegalArgumentException ifnewWidth
is larger than * the width ofimage
or if code>newHeight</code> is larger * than the height ofimage 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 ispixels
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>