Image reflection
/*
* 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.BorderLayout;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.GradientPaint;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.GraphicsConfiguration;
import java.awt.GraphicsEnvironment;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Insets;
import java.awt.Paint;
import java.awt.Rectangle;
import java.awt.RenderingHints;
import java.awt.Transparency;
import java.awt.geom.Point2D;
import java.awt.geom.Rectangle2D;
import java.awt.image.BufferedImage;
import java.awt.image.BufferedImageOp;
import java.awt.image.ColorModel;
import java.awt.image.Raster;
import java.awt.image.WritableRaster;
import java.beans.PropertyChangeListener;
import java.beans.PropertyChangeSupport;
import java.io.IOException;
import java.net.URL;
import javax.imageio.ImageIO;
import javax.swing.JCheckBox;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JSlider;
import javax.swing.SwingUtilities;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
/**
* @author Romain Guy <romain.guy@mac.com>
*/
public class ImageReflectionDemoFilthy extends JFrame {
private ReflectionPanel reflectionPanel;
private JSlider opacitySlider;
private JSlider lengthSlider;
private JSlider radiusSlider;
public ImageReflectionDemoFilthy() {
super("Reflections");
setContentPane(new GradientPanel());
reflectionPanel = new ReflectionPanel();
add(reflectionPanel);
opacitySlider = new JSlider(0, 100, 35);
opacitySlider.addChangeListener(new ChangeListener() {
public void stateChanged(ChangeEvent e) {
reflectionPanel.setOpacity(opacitySlider.getValue() / 100.0f);
}
});
lengthSlider = new JSlider(0, 100, 40);
lengthSlider.addChangeListener(new ChangeListener() {
public void stateChanged(ChangeEvent e) {
reflectionPanel.setLength(lengthSlider.getValue() / 100.0f);
}
});
radiusSlider = new JSlider(1, 20, 1);
radiusSlider.addChangeListener(new ChangeListener() {
public void stateChanged(ChangeEvent e) {
reflectionPanel.setRadius(radiusSlider.getValue());
}
});
JPanel controls = new JPanel(new GridBagLayout());
JLabel label;
controls.setOpaque(false);
controls.add(label = new JLabel("Opacity: 0%"),
new GridBagConstraints(0, 0, 1, 1, 0.0, 1.0,
GridBagConstraints.LINE_START,
GridBagConstraints.NONE,
new Insets(0, 6, 0, 0),
0, 0));
label.setForeground(Color.WHITE);
controls.add(opacitySlider,
new GridBagConstraints(1, 0, 1, 1, 0.0, 1.0,
GridBagConstraints.LINE_START,
GridBagConstraints.NONE,
new Insets(0, 0, 0, 0),
0, 0));
controls.add(label = new JLabel("100%"),
new GridBagConstraints(2, 0, 1, 1, 0.0, 1.0,
GridBagConstraints.LINE_START,
GridBagConstraints.NONE,
new Insets(0, 0, 0, 0),
0, 0));
label.setForeground(Color.WHITE);
controls.add(label = new JLabel("Length: 0%"),
new GridBagConstraints(0, 1, 1, 1, 0.0, 1.0,
GridBagConstraints.LINE_START,
GridBagConstraints.NONE,
new Insets(0, 6, 0, 0),
0, 0));
label.setForeground(Color.WHITE);
controls.add(lengthSlider,
new GridBagConstraints(1, 1, 1, 1, 0.0, 1.0,
GridBagConstraints.LINE_START,
GridBagConstraints.NONE,
new Insets(0, 0, 0, 0),
0, 0));
controls.add(label = new JLabel("100%"),
new GridBagConstraints(2, 1, 1, 1, 0.0, 1.0,
GridBagConstraints.LINE_START,
GridBagConstraints.NONE,
new Insets(0, 0, 0, 0),
0, 0));
label.setForeground(Color.WHITE);
controls.add(label = new JLabel("Blur Radius: 1px"),
new GridBagConstraints(0, 2, 1, 1, 0.0, 1.0,
GridBagConstraints.LINE_START,
GridBagConstraints.NONE,
new Insets(0, 6, 0, 0),
0, 0));
label.setForeground(Color.WHITE);
controls.add(radiusSlider,
new GridBagConstraints(1, 2, 1, 1, 0.0, 1.0,
GridBagConstraints.LINE_START,
GridBagConstraints.NONE,
new Insets(0, 0, 0, 0),
0, 0));
controls.add(label = new JLabel("20px"),
new GridBagConstraints(2, 2, 1, 1, 0.0, 1.0,
GridBagConstraints.LINE_START,
GridBagConstraints.NONE,
new Insets(0, 0, 0, 0),
0, 0));
label.setForeground(Color.WHITE);
JCheckBox blurCheckBox = new JCheckBox("Blur Enabled");
blurCheckBox.addChangeListener(new ChangeListener() {
public void stateChanged(ChangeEvent changeEvent) {
reflectionPanel.setBlurEnabled(
((JCheckBox) changeEvent.getSource()).isSelected());
}
});
blurCheckBox.setOpaque(false);
blurCheckBox.setForeground(Color.WHITE);
controls.add(blurCheckBox,
new GridBagConstraints(0, 3, 1, 1, 0.0, 1.0,
GridBagConstraints.LINE_START,
GridBagConstraints.NONE,
new Insets(0, 0, 6, 0),
0, 0));
//add(controls, BorderLayout.SOUTH);
reflectionPanel.setLayout(new BorderLayout());
reflectionPanel.add(controls, BorderLayout.SOUTH);
pack();
setLocationRelativeTo(null);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
private static class ReflectionPanel extends JPanel {
private BufferedImage image = null;
private BufferedImage imageA;
private ReflectionRenderer renderer = new ReflectionRenderer();
public ReflectionPanel() {
try {
imageA = GraphicsUtilities.loadCompatibleImage(getClass().getResource("A.jpg"));
} catch (IOException e) {
e.printStackTrace();
}
image = renderer.createReflection(imageA);
setOpaque(false);
}
@Override
public Dimension getPreferredSize() {
return new Dimension(640, 520);
}
@Override
protected void paintComponent(Graphics g) {
int x = (getWidth() - imageA.getWidth()) / 2;
int y = 24;
if (renderer.isBlurEnabled()) {
x -= renderer.getEffectiveBlurRadius();
y -= renderer.getEffectiveBlurRadius() + 1;
}
g.drawImage(image, x, y + imageA.getHeight(), null);
if (renderer.isBlurEnabled()) {
x += renderer.getEffectiveBlurRadius();
y += renderer.getEffectiveBlurRadius() + 1;
}
g.drawImage(imageA, x, y, null);
}
public void setOpacity(float opacity) {
renderer.setOpacity(opacity);
image = renderer.createReflection(imageA);
repaint();
}
public void setLength(float length) {
renderer.setLength(length);
image = renderer.createReflection(imageA);
repaint();
}
public void setBlurEnabled(boolean selected) {
renderer.setBlurEnabled(selected);
image = renderer.createReflection(imageA);
repaint();
}
public void setRadius(int radius) {
renderer.setBlurRadius(radius);
image = renderer.createReflection(imageA);
repaint();
}
}
private static class GradientPanel extends JPanel {
GradientPanel() {
super(new BorderLayout());
}
@Override
protected void paintComponent(Graphics g) {
Graphics2D g2 = (Graphics2D) g;
Rectangle clip = g2.getClipBounds();
Paint paint = g2.getPaint();
g2.setPaint(new GradientPaint(0.0f, getHeight() * 0.22f,
new Color(0x202737),
0.0f, getHeight() * 0.7f,
Color.BLACK));
g2.fillRect(clip.x, clip.y, clip.width, clip.height);
g2.setPaint(paint);
}
}
public static void main(String... args) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
new ImageReflectionDemoFilthy().setVisible(true);
}
});
}
}
/*
* 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.
*/
/**
* <p><code>GraphicsUtilities</code> contains a set of tools to perform
* common graphics operations easily. These operations are divided into
* several themes, listed below.</p>
* <h2>Compatible Images</h2>
* <p>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.</p>
* <h2>Creating Thumbnails</h2>
* <p>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.</p>
* <p>All these methodes are both faster than
* {@link java.awt.Image#getScaledInstance(int, int, int)} and produce
* better-looking results than the various <code>drawImage()</code> methods
* in {@link java.awt.Graphics}, which can be used for image scaling.</p>
* <h2>Image Manipulation</h2>
* <p>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.</p>
*
* @author Romain Guy <romain.guy@mac.com>
*/
class GraphicsUtilities {
private GraphicsUtilities() {
}
// Returns the graphics configuration for the primary screen
private static GraphicsConfiguration getGraphicsConfiguration() {
return GraphicsEnvironment.getLocalGraphicsEnvironment().
getDefaultScreenDevice().getDefaultConfiguration();
}
/**
* <p>Returns a new <code>BufferedImage</code> 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.</p>
*
* @param image the reference image from which the color model of the new
* image is obtained
* @return a new <code>BufferedImage</code>, compatible with the color model
* of <code>image</code>
*/
public static BufferedImage createColorModelCompatibleImage(BufferedImage image) {
ColorModel cm = image.getColorModel();
return new BufferedImage(cm,
cm.createCompatibleWritableRaster(image.getWidth(),
image.getHeight()),
cm.isAlphaPremultiplied(), null);
}
/**
* <p>Returns a new compatible image with the same width, height and
* transparency as the image specified as a parameter.</p>
*
* @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 <code>BufferedImage</code> with the same
* dimension and transparency as <code>image</code>
*/
public static BufferedImage createCompatibleImage(BufferedImage image) {
return createCompatibleImage(image, image.getWidth(), image.getHeight());
}
/**
* <p>Returns a new compatible image of the specified width and height, and
* the same transparency setting as the image specified as a parameter.</p>
*
* @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 <code>BufferedImage</code> with the same
* transparency as <code>image</code> and the specified dimension
*/
public static BufferedImage createCompatibleImage(BufferedImage image,
int width, int height) {
return getGraphicsConfiguration().createCompatibleImage(width, height,
image.getTransparency());
}
/**
* <p>Returns a new opaque compatible image of the specified width and
* height.</p>
*
* @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 <code>BufferedImage</code> of the
* specified width and height
*/
public static BufferedImage createCompatibleImage(int width, int height) {
return getGraphicsConfiguration().createCompatibleImage(width, height);
}
/**
* <p>Returns a new translucent compatible image of the specified width
* and height.</p>
*
* @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 <code>BufferedImage</code> of the
* specified width and height
*/
public static BufferedImage createCompatibleTranslucentImage(int width,
int height) {
return getGraphicsConfiguration().createCompatibleImage(width, height,
Transparency.TRANSLUCENT);
}
/**
* <p>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.</p>
*
* @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 <code>BufferedImage</code> 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);
}
/**
* <p>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.</p>
*
* @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 <code>image</code>
*/
public static BufferedImage toCompatibleImage(BufferedImage 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;
}
/**
* <p>Returns a thumbnail of a source image. <code>newSize</code> 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.</p>
* <p>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.</p>
*
* @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 <code>BufferedImage</code> containing a
* thumbnail of <code>image</code>
* @throws IllegalArgumentException if <code>newSize</code> is larger than
* the largest dimension of <code>image</code> 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;
}
/**
* <p>Returns a thumbnail of a source image.</p>
* <p>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.</p>
*
* @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 <code>BufferedImage</code> containing a
* thumbnail of <code>image</code>
* @throws IllegalArgumentException if <code>newWidth</code> is larger than
* the width of <code>image</code> or if code>newHeight</code> is larger
* than the height of <code>image</code> 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;
}
/**
* <p>Returns a thumbnail of a source image. <code>newSize</code> 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.</p>
* <p>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.</p>
*
* @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 <code>BufferedImage</code> containing a
* thumbnail of <code>image</code>
* @throws IllegalArgumentException if <code>newSize</code> is larger than
* the largest dimension of <code>image</code> or <= 0
*/
public static BufferedImage createThumbnail(BufferedImage image,
int newSize) {
int width = image.getWidth();
int height = image.getHeight();
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) {
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.drawImage(thumb, 0, 0, null);
g2.dispose();
thumb = temp;
}
return thumb;
}
/**
* <p>Returns a thumbnail of a source image.</p>
* <p>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.</p>
*
* @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 <code>BufferedImage</code> containing a
* thumbnail of <code>image</code>
* @throws IllegalArgumentException if <code>newWidth</code> is larger than
* the width of <code>image</code> or if code>newHeight</code> is larger
* than the height of <code>image or if one the dimensions is not > 0</code>
*/
public static BufferedImage createThumbnail(BufferedImage image,
int newWidth, int newHeight) {
int width = image.getWidth();
int height = image.getHeight();
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) {
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.drawImage(thumb, 0, 0, null);
g2.dispose();
thumb = temp;
}
return thumb;
}
/**
* <p>Returns an array of pixels, stored as integers, from a
* <code>BufferedImage</code>. 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 <code>BufferedImage.TYPE_INT_ARGB</code>
* and <code>BufferedImage.TYPE_INT_RGB</code> will unmanage the image.</p>
*
* @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 <code>pixels</code> if non-null, a new array of integers
* otherwise
* @throws IllegalArgumentException is <code>pixels</code> 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);
}
/**
* <p>Writes a rectangular area of pixels in the destination
* <code>BufferedImage</code>. Calling this method on
* an image of type different from <code>BufferedImage.TYPE_INT_ARGB</code>
* and <code>BufferedImage.TYPE_INT_RGB</code> will unmanage the image.</p>
*
* @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 <code>pixels</code> 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.
*/
/**
* <p>A fast blur filter can be used to blur pictures quickly. This filter is an
* implementation of the box blur algorithm. The blurs generated by this
* algorithm might show square artifacts, especially on pictures containing
* straight lines (rectangles, text, etc.) On most pictures though, the
* result will look very good.</p>
* <p>The force of the blur can be controlled with a radius and the
* default radius is 3. Since the blur clamps values on the edges of the
* source picture, you might need to provide a picture with empty borders
* to avoid artifacts at the edges. The performance of this filter are
* independant from the radius.</p>
*
* @author Romain Guy <romain.guy@mac.com>
*/
class FastBlurFilter extends AbstractFilter {
private final int radius;
/**
* <p>Creates a new blur filter with a default radius of 3.</p>
*/
public FastBlurFilter() {
this(3);
}
/**
* <p>Creates a new blur filter with the specified radius. If the radius
* is lower than 1, a radius of 1 will be used automatically.</p>
*
* @param radius the radius, in pixels, of the blur
*/
public FastBlurFilter(int radius) {
if (radius < 1) {
radius = 1;
}
this.radius = radius;
}
/**
* <p>Returns the radius used by this filter, in pixels.</p>
*
* @return the radius of the blur
*/
public int getRadius() {
return radius;
}
/**
* {@inheritDoc}
*/
@Override
public BufferedImage filter(BufferedImage src, BufferedImage dst) {
int width = src.getWidth();
int height = src.getHeight();
if (dst == null) {
dst = createCompatibleDestImage(src, null);
}
int[] srcPixels = new int[width * height];
int[] dstPixels = new int[width * height];
GraphicsUtilities.getPixels(src, 0, 0, width, height, srcPixels);
// horizontal pass
blur(srcPixels, dstPixels, width, height, radius);
// vertical pass
//noinspection SuspiciousNameCombination
blur(dstPixels, srcPixels, height, width, radius);
// the result is now stored in srcPixels due to the 2nd pass
GraphicsUtilities.setPixels(dst, 0, 0, width, height, srcPixels);
return dst;
}
/**
* <p>Blurs the source pixels into the destination pixels. The force of
* the blur is specified by the radius which must be greater than 0.</p>
* <p>The source and destination pixels arrays are expected to be in the
* INT_ARGB format.</p>
* <p>After this method is executed, dstPixels contains a transposed and
* filtered copy of srcPixels.</p>
*
* @param srcPixels the source pixels
* @param dstPixels the destination pixels
* @param width the width of the source picture
* @param height the height of the source picture
* @param radius the radius of the blur effect
*/
static void blur(int[] srcPixels, int[] dstPixels,
int width, int height, int radius) {
final int windowSize = radius * 2 + 1;
final int radiusPlusOne = radius + 1;
int sumAlpha;
int sumRed;
int sumGreen;
int sumBlue;
int srcIndex = 0;
int dstIndex;
int pixel;
int[] sumLookupTable = new int[256 * windowSize];
for (int i = 0; i < sumLookupTable.length; i++) {
sumLookupTable[i] = i / windowSize;
}
int[] indexLookupTable = new int[radiusPlusOne];
if (radius < width) {
for (int i = 0; i < indexLookupTable.length; i++) {
indexLookupTable[i] = i;
}
} else {
for (int i = 0; i < width; i++) {
indexLookupTable[i] = i;
}
for (int i = width; i < indexLookupTable.length; i++) {
indexLookupTable[i] = width - 1;
}
}
for (int y = 0; y < height; y++) {
sumAlpha = sumRed = sumGreen = sumBlue = 0;
dstIndex = y;
pixel = srcPixels[srcIndex];
sumAlpha += radiusPlusOne * ((pixel >> 24) & 0xFF);
sumRed += radiusPlusOne * ((pixel >> 16) & 0xFF);
sumGreen += radiusPlusOne * ((pixel >> 8) & 0xFF);
sumBlue += radiusPlusOne * ( pixel & 0xFF);
for (int i = 1; i <= radius; i++) {
pixel = srcPixels[srcIndex + indexLookupTable[i]];
sumAlpha += (pixel >> 24) & 0xFF;
sumRed += (pixel >> 16) & 0xFF;
sumGreen += (pixel >> 8) & 0xFF;
sumBlue += pixel & 0xFF;
}
for (int x = 0; x < width; x++) {
dstPixels[dstIndex] = sumLookupTable[sumAlpha] << 24 |
sumLookupTable[sumRed] << 16 |
sumLookupTable[sumGreen] << 8 |
sumLookupTable[sumBlue];
dstIndex += height;
int nextPixelIndex = x + radiusPlusOne;
if (nextPixelIndex >= width) {
nextPixelIndex = width - 1;
}
int previousPixelIndex = x - radius;
if (previousPixelIndex < 0) {
previousPixelIndex = 0;
}
int nextPixel = srcPixels[srcIndex + nextPixelIndex];
int previousPixel = srcPixels[srcIndex + previousPixelIndex];
sumAlpha += (nextPixel >> 24) & 0xFF;
sumAlpha -= (previousPixel >> 24) & 0xFF;
sumRed += (nextPixel >> 16) & 0xFF;
sumRed -= (previousPixel >> 16) & 0xFF;
sumGreen += (nextPixel >> 8) & 0xFF;
sumGreen -= (previousPixel >> 8) & 0xFF;
sumBlue += nextPixel & 0xFF;
sumBlue -= previousPixel & 0xFF;
}
srcIndex += width;
}
}
}
/*
* 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.
*/
/**
* <p>Provides an abstract implementation of the <code>BufferedImageOp</code>
* interface. This class can be used to created new image filters based
* on <code>BufferedImageOp</code>.</p>
*
* @author Romain Guy <romain.guy@mac.com>
*/
abstract class AbstractFilter implements BufferedImageOp {
public abstract BufferedImage filter(BufferedImage src, BufferedImage dest);
/**
* {@inheritDoc}
*/
public Rectangle2D getBounds2D(BufferedImage src) {
return new Rectangle(0, 0, src.getWidth(), src.getHeight());
}
/**
* {@inheritDoc}
*/
public BufferedImage createCompatibleDestImage(BufferedImage src,
ColorModel destCM) {
if (destCM == null) {
destCM = src.getColorModel();
}
return new BufferedImage(destCM,
destCM.createCompatibleWritableRaster(
src.getWidth(), src.getHeight()),
destCM.isAlphaPremultiplied(), null);
}
/**
* {@inheritDoc}
*/
public Point2D getPoint2D(Point2D srcPt, Point2D dstPt) {
return (Point2D) srcPt.clone();
}
/**
* {@inheritDoc}
*/
public RenderingHints getRenderingHints() {
return null;
}
}
/*
* 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.
*/
/**
* <p>A reflection renderer generates the reflection of a given picture. The
* result can be either the reflection itself, or an image containing both the
* source image and its reflection.</p>
* <h2>Reflection Properties</h2>
* <p>A reflection is defined by three properties:
* <ul>
* <li><i>opacity</i>: the opacity of the reflection. You will usually
* change this valued according to the background color.</li>
* <li><i>length</i>: the length of the reflection. The length is a fraction
* of the height of the source image.</li>
* <li><i>blur enabled</i>: perfect reflections are hardly natural. You can
* blur the reflection to make it look a bit more natural.</li>
* </ul>
* You can set these properties using the provided mutaters or the appropriate
* constructor. Here are two ways of creating a blurred reflection, with an
* opacity of 50% and a length of 30% the height of the original image:
* <pre>
* ReflectionRenderer renderer = new ReflectionRenderer(0.5f, 0.3f, true);
* // ..
* renderer = new ReflectionRenderer();
* renderer.setOpacity(0.5f);
* renderer.setLength(0.3f);
* renderer.setBlurEnabled(true);
* </pre>
* The default constructor provides the following default values:
* <ul>
* <li><i>opacity</i>: 35%</li>
* <li><i>length</i>: 40%</li>
* <li><i>blur enabled</i>: false</li>
* </ul></p>
* <h2>Generating Reflections</h2>
* <p>A reflection is generated as a <code>BufferedImage</code> from another
* <code>BufferedImage</code>. Once the renderer is set up, you must call
* {@link #createReflection(java.awt.image.BufferedImage)} to actually generate
* the reflection:
* <pre>
* ReflectionRenderer renderer = new ReflectionRenderer();
* // renderer setup
* BufferedImage reflection = renderer.createReflection(bufferedImage);
* </pre></p>
* <p>The returned image contains only the reflection. You will have to append
* it to the source image at painting time to get a realistic results. You can
* also asks the rendered to return a picture composed of both the source image
* and its reflection:
* <pre>
* ReflectionRenderer renderer = new ReflectionRenderer();
* // renderer setup
* BufferedImage reflection = renderer.appendReflection(bufferedImage);
* </pre></p>
* <h2>Properties Changes</h2>
* <p>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.</p>
* <h2>Threading Issues</h2>
* <p><code>ReflectionRenderer</code> is not guaranteed to be thread-safe.</p>
*
* @author Romain Guy <romain.guy@mac.com>
*/
class ReflectionRenderer {
/**
* <p>Identifies a change to the opacity used to render the reflection.</p>
*/
public static final String OPACITY_CHANGED_PROPERTY = "reflection_opacity";
/**
* <p>Identifies a change to the length of the rendered reflection.</p>
*/
public static final String LENGTH_CHANGED_PROPERTY = "reflection_length";
/**
* <p>Identifies a change to the blurring of the rendered reflection.</p>
*/
public static final String BLUR_ENABLED_CHANGED_PROPERTY = "reflection_blur";
// opacity of the reflection
private float opacity;
// length of the reflection
private float length;
// should the reflection be blurred?
private boolean blurEnabled;
// notifies listeners of properties changes
private PropertyChangeSupport changeSupport;
private StackBlurFilter stackBlurFilter;
/**
* <p>Creates a default good looking reflections generator.
* The default reflection renderer provides the following default values:
* <ul>
* <li><i>opacity</i>: 35%</li>
* <li><i>length</i>: 40%</li>
* <li><i>blurring</i>: disabled with a radius of 1 pixel</li>
* </ul></p>
* <p>These properties provide a regular, good looking reflection.</p>
*
* @see #getOpacity()
* @see #setOpacity(float)
* @see #getLength()
* @see #setLength(float)
* @see #isBlurEnabled()
* @see #setBlurEnabled(boolean)
* @see #getBlurRadius()
* @see #setBlurRadius(int)
*/
public ReflectionRenderer() {
this(0.35f, 0.4f, false);
}
/**
* <p>Creates a default good looking reflections generator with the
* specified opacity. The default reflection renderer provides the following
* default values:
* <ul>
* <li><i>length</i>: 40%</li>
* <li><i>blurring</i>: disabled with a radius of 1 pixel</li>
* </ul></p>
*
* @param opacity the opacity of the reflection, between 0.0 and 1.0
* @see #getOpacity()
* @see #setOpacity(float)
* @see #getLength()
* @see #setLength(float)
* @see #isBlurEnabled()
* @see #setBlurEnabled(boolean)
* @see #getBlurRadius()
* @see #setBlurRadius(int)
*/
public ReflectionRenderer(float opacity) {
this(opacity, 0.4f, false);
}
/**
* <p>Creates a reflections generator with the specified properties. Both
* opacity and length are numbers between 0.0 (0%) and 1.0 (100%). If the
* provided numbers are outside this range, they are clamped.</p>
* <p>Enabling the blur generates a different kind of reflections that might
* look more natural. The default blur radius is 1 pixel</p>
*
* @param opacity the opacity of the reflection
* @param length the length of the reflection
* @param blurEnabled if true, the reflection is blurred
* @see #getOpacity(),#setOpacity(float),#getLength(),#setLength(float)
* @see #isBlurEnabled(),#setBlurEnabled(boolean)
* @see #getBlurRadius()
* @see #setBlurRadius(int)
*/
public ReflectionRenderer(float opacity, float length, boolean blurEnabled) {
//noinspection ThisEscapedInObjectConstruction
this.changeSupport = new PropertyChangeSupport(this);
this.stackBlurFilter = new StackBlurFilter(1);
setOpacity(opacity);
setLength(length);
setBlurEnabled(blurEnabled);
}
/**
* <p>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
* <code>listener</code> is null, no exception is thrown and no action
* is taken.</p>
*
* @param listener the PropertyChangeListener to be added
*/
public void addPropertyChangeListener(PropertyChangeListener listener) {
changeSupport.addPropertyChangeListener(listener);
}
/**
* <p>Remove a PropertyChangeListener from the listener list. This removes
* a PropertyChangeListener that was registered for all properties. If
* <code>listener</code> was added more than once to the same event source,
* it will be notified one less time after being removed. If
* <code>listener</code> is null, or was never added, no exception is thrown
* and no action is taken.</p>
*
* @param listener the PropertyChangeListener to be removed
*/
public void removePropertyChangeListener(PropertyChangeListener listener) {
changeSupport.removePropertyChangeListener(listener);
}
/**
* <p>Gets the opacity used by the factory to generate reflections.</p>
* <p>The opacity is comprised between 0.0f and 1.0f; 0.0f being fully
* transparent and 1.0f fully opaque.</p>
*
* @return this factory's shadow opacity
* @see #getOpacity()
* @see #createReflection(java.awt.image.BufferedImage)
* @see #appendReflection(java.awt.image.BufferedImage)
*/
public float getOpacity() {
return opacity;
}
/**
* <p>Sets the opacity used by the factory to generate reflections.</p>
* <p>Consecutive calls to {@link #createReflection} will all use this
* opacity until it is set again.</p>
* <p>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.</p>
*
* @param opacity the generated reflection opacity
* @see #setOpacity(float)
* @see #createReflection(java.awt.image.BufferedImage)
* @see #appendReflection(java.awt.image.BufferedImage)
*/
public void setOpacity(float opacity) {
float oldOpacity = this.opacity;
if (opacity < 0.0f) {
opacity = 0.0f;
} else if (opacity > 1.0f) {
opacity = 1.0f;
}
if (oldOpacity != opacity) {
this.opacity = opacity;
changeSupport.firePropertyChange(OPACITY_CHANGED_PROPERTY,
oldOpacity,
this.opacity);
}
}
/**
* <p>Returns the length of the reflection. The result is a number between
* 0.0 and 1.0. This number is the fraction of the height of the source
* image that is used to compute the size of the reflection.</p>
*
* @return the length of the reflection, as a fraction of the source image
* height
* @see #setLength(float)
* @see #createReflection(java.awt.image.BufferedImage)
* @see #appendReflection(java.awt.image.BufferedImage)
*/
public float getLength() {
return length;
}
/**
* <p>Sets the length of the reflection, as a fraction of the height of the
* source image.</p>
* <p>Consecutive calls to {@link #createReflection} will all use this
* opacity until it is set again.</p>
* <p>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.</p>
*
* @param length the length of the reflection, as a fraction of the source
* image height
* @see #getLength()
* @see #createReflection(java.awt.image.BufferedImage)
* @see #appendReflection(java.awt.image.BufferedImage)
*/
public void setLength(float length) {
float oldLength = this.length;
if (length < 0.0f) {
length = 0.0f;
} else if (length > 1.0f) {
length = 1.0f;
}
if (oldLength != length) {
this.length = length;
changeSupport.firePropertyChange(LENGTH_CHANGED_PROPERTY,
oldLength,
this.length);
}
}
/**
* <p>Returns true if the blurring of the reflection is enabled, false
* otherwise. When blurring is enabled, the reflection is blurred to look
* more natural.</p>
*
* @return true if blur is enabled, false otherwise
* @see #setBlurEnabled(boolean)
* @see #createReflection(java.awt.image.BufferedImage)
* @see #appendReflection(java.awt.image.BufferedImage)
*/
public boolean isBlurEnabled() {
return blurEnabled;
}
/**
* <p>Setting the blur to true will enable the blurring of the reflection
* when {@link #createReflection} is invoked.</p>
* <p>Enabling the blurring of the reflection can yield to more natural
* results which may or may not be better looking, depending on the source
* picture.</p>
* <p>Consecutive calls to {@link #createReflection} will all use this
* opacity until it is set again.</p>
*
* @param blurEnabled true to enable the blur, false otherwise
* @see #isBlurEnabled()
* @see #createReflection(java.awt.image.BufferedImage)
* @see #appendReflection(java.awt.image.BufferedImage)
*/
public void setBlurEnabled(boolean blurEnabled) {
if (blurEnabled != this.blurEnabled) {
boolean oldBlur = this.blurEnabled;
this.blurEnabled= blurEnabled;
changeSupport.firePropertyChange(BLUR_ENABLED_CHANGED_PROPERTY,
oldBlur,
this.blurEnabled);
}
}
/**
* <p>Returns the effective radius, in pixels, of the blur used by this
* renderer when {@link #isBlurEnabled()} is true.</p>
*
* @return the effective radius of the blur used when
* <code>isBlurEnabled</code> is true
* @see #isBlurEnabled()
* @see #setBlurEnabled(boolean)
* @see #setBlurRadius(int)
* @see #getBlurRadius()
*/
public int getEffectiveBlurRadius() {
return stackBlurFilter.getEffectiveRadius();
}
/**
* <p>Returns the radius, in pixels, of the blur used by this renderer when
* {@link #isBlurEnabled()} is true.</p>
*
* @return the radius of the blur used when <code>isBlurEnabled</code>
* is true
* @see #isBlurEnabled()
* @see #setBlurEnabled(boolean)
* @see #setBlurRadius(int)
* @see #getEffectiveBlurRadius()
*/
public int getBlurRadius() {
return stackBlurFilter.getRadius();
}
/**
* <p>Sets the radius, in pixels, of the blur used by this renderer when
* {@link #isBlurEnabled()} is true. This radius changes the size of the
* generated image when blurring is applied.</p>
*
* @param radius the radius, in pixels, of the blur
* @see #isBlurEnabled()
* @see #setBlurEnabled(boolean)
* @see #getBlurRadius()
*/
public void setBlurRadius(int radius) {
this.stackBlurFilter = new StackBlurFilter(radius);
}
/**
* <p>Returns the source image and its reflection. The appearance of the
* reflection is defined by the opacity, the length and the blur
* properties.</p>
* * <p>The width of the generated image will be augmented when
* {@link #isBlurEnabled()} is true. The generated image will have the width
* of the source image plus twice the effective blur radius (see
* {@link #getEffectiveBlurRadius()}). The default blur radius is 1 so the
* width will be augmented by 6. You might need to take this into account
* at drawing time.</p>
* <p>The returned image height depends on the value returned by
* {@link #getLength()} and {@link #getEffectiveBlurRadius()}. For instance,
* if the length is 0.5 (or 50%) and the source image is 480 pixels high,
* then the reflection will be 246 (480 * 0.5 + 3 * 2) pixels high.</p>
* <p>You can create only the reflection by calling
* {@link #createReflection(java.awt.image.BufferedImage)}.</p>
*
* @param image the source image
* @return the source image with its reflection below
* @see #createReflection(java.awt.image.BufferedImage)
*/
public BufferedImage appendReflection(BufferedImage image) {
BufferedImage reflection = createReflection(image);
BufferedImage buffer = GraphicsUtilities.createCompatibleTranslucentImage(
reflection.getWidth(), image.getHeight() + reflection.getHeight());
Graphics2D g2 = buffer.createGraphics();
int effectiveRadius = isBlurEnabled() ? stackBlurFilter.getEffectiveRadius() : 0;
g2.drawImage(image, effectiveRadius, 0, null);
g2.drawImage(reflection, 0, image.getHeight() - effectiveRadius, null);
g2.dispose();
reflection.flush();
return buffer;
}
/**
* <p>Returns the reflection of the source image. The appearance of the
* reflection is defined by the opacity, the length and the blur
* properties.</p>
* * <p>The width of the generated image will be augmented when
* {@link #isBlurEnabled()} is true. The generated image will have the width
* of the source image plus twice the effective blur radius (see
* {@link #getEffectiveBlurRadius()}). The default blur radius is 1 so the
* width will be augmented by 6. You might need to take this into account
* at drawing time.</p>
* <p>The returned image height depends on the value returned by
* {@link #getLength()} and {@link #getEffectiveBlurRadius()}. For instance,
* if the length is 0.5 (or 50%) and the source image is 480 pixels high,
* then the reflection will be 246 (480 * 0.5 + 3 * 2) pixels high.</p>
* <p>The returned image contains <strong>only</strong>
* the reflection. You will have to append it to the source image to produce
* the illusion of a reflective environement. The method
* {@link #appendReflection(java.awt.image.BufferedImage)} provides an easy
* way to create an image containing both the source and the reflection.</p>
*
* @param image the source image
* @return the reflection of the source image
* @see #appendReflection(java.awt.image.BufferedImage)
*/
public BufferedImage createReflection(BufferedImage image) {
if (length == 0.0f) {
return GraphicsUtilities.createCompatibleTranslucentImage(1, 1);
}
int blurOffset = isBlurEnabled() ?
stackBlurFilter.getEffectiveRadius() : 0;
int height = (int) (image.getHeight() * length);
BufferedImage buffer =
GraphicsUtilities.createCompatibleTranslucentImage(
image.getWidth() + blurOffset * 2,
height + blurOffset * 2);
Graphics2D g2 = buffer.createGraphics();
g2.translate(0, image.getHeight());
g2.scale(1.0, -1.0);
g2.drawImage(image, blurOffset, -blurOffset, null);
g2.scale(1.0, -1.0);
g2.translate(0, -image.getHeight());
g2.setComposite(AlphaComposite.DstIn);
g2.setPaint(new GradientPaint(0.0f, 0.0f,
new Color(0.0f, 0.0f, 0.0f, getOpacity()),
0.0f, buffer.getHeight(),
new Color(0.0f, 0.0f, 0.0f, 0.0f), true));
g2.fillRect(0, 0, buffer.getWidth(), buffer.getHeight());
g2.dispose();
return isBlurEnabled() ? stackBlurFilter.filter(buffer, null) :
buffer;
}
}
/*
* 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.
*/
/**
* <p>A stack blur filter can be used to create an approximation of a
* gaussian blur. The approximation is controlled by the number of times the
* {@link org.jdesktop.swingx.image.FastBlurFilter} is applied onto the source
* picture. The default number of iterations, 3, provides a decent compromise
* between speed and rendering quality.</p>
* <p>The force of the blur can be controlled with a radius and the
* default radius is 3. Since the blur clamps values on the edges of the
* source picture, you might need to provide a picture with empty borders
* to avoid artifacts at the edges. The performance of this filter are
* independant from the radius.</p>
*
* @author Romain Guy <romain.guy@mac.com>
*/
class StackBlurFilter extends AbstractFilter {
private final int radius;
private final int iterations;
/**
* <p>Creates a new blur filter with a default radius of 3 and 3 iterations.</p>
*/
public StackBlurFilter() {
this(3, 3);
}
/**
* <p>Creates a new blur filter with the specified radius and 3 iterations.
* If the radius is lower than 1, a radius of 1 will be used automatically.</p>
*
* @param radius the radius, in pixels, of the blur
*/
public StackBlurFilter(int radius) {
this(radius, 3);
}
/**
* <p>Creates a new blur filter with the specified radius. If the radius
* is lower than 1, a radius of 1 will be used automatically. The number
* of iterations controls the approximation to a gaussian blur. If the
* number of iterations is lower than 1, one iteration will be used
* automatically.</p>
*
* @param radius the radius, in pixels, of the blur
* @param iterations the number of iterations to approximate a gaussian blur
*/
public StackBlurFilter(int radius, int iterations) {
if (radius < 1) {
radius = 1;
}
if (iterations < 1) {
iterations = 1;
}
this.radius = radius;
this.iterations = iterations;
}
/**
* <p>Returns the effective radius of the stack blur. If the radius of the
* blur is 1 and the stack iterations count is 3, then the effective blur
* radius is 1 * 3 = 3.</p>
* @return the number of iterations times the blur radius
*/
public int getEffectiveRadius() {
return getIterations() * getRadius();
}
/**
* <p>Returns the radius used by this filter, in pixels.</p>
*
* @return the radius of the blur
*/
public int getRadius() {
return radius;
}
/**
* <p>Returns the number of iterations used to approximate a gaussian
* blur.</p>
*
* @return the number of iterations used by this blur
*/
public int getIterations() {
return iterations;
}
/**
* {@inheritDoc}
*/
@Override
public BufferedImage filter(BufferedImage src, BufferedImage dst) {
int width = src.getWidth();
int height = src.getHeight();
if (dst == null) {
dst = createCompatibleDestImage(src, null);
}
int[] srcPixels = new int[width * height];
int[] dstPixels = new int[width * height];
GraphicsUtilities.getPixels(src, 0, 0, width, height, srcPixels);
for (int i = 0; i < iterations; i++) {
// horizontal pass
FastBlurFilter.blur(srcPixels, dstPixels, width, height, radius);
// vertical pass
FastBlurFilter.blur(dstPixels, srcPixels, height, width, radius);
}
// the result is now stored in srcPixels due to the 2nd pass
GraphicsUtilities.setPixels(dst, 0, 0, width, height, srcPixels);
return dst;
}
}
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