private void customizeComponents() {
// initialize supported image types
// TODO use mime-types instead once we have support
String[] fxSupportedImagesSuffixes = ImageIO.getReaderFileSuffixes();
imageExtensions = new String[fxSupportedImagesSuffixes.length];
// logger.log(Level.INFO, "Supported image formats by javafx image viewer: ");
for (int i = 0; i < fxSupportedImagesSuffixes.length; ++i) {
String suffix = fxSupportedImagesSuffixes[i];
// logger.log(Level.INFO, "suffix: " + suffix);
imageExtensions[i] = "." + suffix;
}
add(imagePanel, IMAGE_VIEWER_LAYER);
add(videoPanel, VIDEO_VIEWER_LAYER);
switchPanels(false);
}
public String promptUserForFile() {
try {
JFileChooser fileOpen = new JFileChooser("Desktop\\News and Opinion Corpus - Ralph Regalado");
String[] suffices = ImageIO.getReaderFileSuffixes();
for (int i = 0; i < suffices.length; i++) {
FileFilter filter = new FileNameExtensionFilter(suffices[i] + " files", suffices[i]);
fileOpen.addChoosableFileFilter(filter);
}
int ret = fileOpen.showDialog(null, "Open file");
filepath = fileOpen.getSelectedFile().getAbsolutePath();
} catch (Exception exc) {
System.out.println(filepath);
}
System.out.println(filepath);
return filepath;
}
/** Open a file and load the image. */
public void openFile() {
JFileChooser chooser = new JFileChooser();
chooser.setCurrentDirectory(new File("."));
String[] extensions = ImageIO.getReaderFileSuffixes();
chooser.setFileFilter(new FileNameExtensionFilter("Image files", extensions));
int r = chooser.showOpenDialog(this);
if (r != JFileChooser.APPROVE_OPTION) return;
try {
Image img = ImageIO.read(chooser.getSelectedFile());
image =
new BufferedImage(img.getWidth(null), img.getHeight(null), BufferedImage.TYPE_INT_RGB);
image.getGraphics().drawImage(img, 0, 0, null);
} catch (IOException e) {
JOptionPane.showMessageDialog(this, e);
}
repaint();
}
/**
* Utilities for creating and manipulating thumbnail and icon images.
*
* @author jwallace
*/
public class ImageUtils {
public static final int ICON_SIZE_SMALL = 50;
public static final int ICON_SIZE_MEDIUM = 100;
public static final int ICON_SIZE_LARGE = 200;
private static final Logger logger = Logger.getLogger(ImageUtils.class.getName());
private static final Image DEFAULT_ICON =
new ImageIcon("/org/sleuthkit/autopsy/images/file-icon.png").getImage(); // NON-NLS
private static final List<String> SUPP_EXTENSIONS =
Arrays.asList(ImageIO.getReaderFileSuffixes());
private static final List<String> SUPP_MIME_TYPES = Arrays.asList(ImageIO.getReaderMIMETypes());
/**
* Get the default Icon, which is the icon for a file.
*
* @return
*/
public static Image getDefaultIcon() {
return DEFAULT_ICON;
}
/**
* Can a thumbnail be generated for the content?
*
* @param content
* @return
*/
public static boolean thumbnailSupported(Content content) {
if (content instanceof AbstractFile == false) {
return false;
}
AbstractFile f = (AbstractFile) content;
if (f.getSize() == 0) {
return false;
}
// check the blackboard for a file type attribute
try {
ArrayList<BlackboardAttribute> attributes =
f.getGenInfoAttributes(ATTRIBUTE_TYPE.TSK_FILE_TYPE_SIG);
for (BlackboardAttribute attribute : attributes) {
if (SUPP_MIME_TYPES.contains(attribute.getValueString())) {
return true;
}
}
} catch (TskCoreException ex) {
logger.log(
Level.WARNING, "Error while getting file signature from blackboard.", ex); // NON-NLS
}
final String extension = f.getNameExtension();
// if we have an extension, check it
if (extension.equals("") == false) {
// Note: thumbnail generator only supports JPG, GIF, and PNG for now
if (SUPP_EXTENSIONS.contains(extension)) {
return true;
}
}
// if no extension or one that is not for an image, then read the content
return isJpegFileHeader(f);
}
/**
* Get an icon of a specified size.
*
* @param content
* @param iconSize
* @return
*/
public static Image getIcon(Content content, int iconSize) {
Image icon;
// If a thumbnail file is already saved locally
File file = getFile(content.getId());
if (file.exists()) {
try {
BufferedImage bicon = ImageIO.read(file);
if (bicon == null) {
icon = DEFAULT_ICON;
} else if (bicon.getWidth() != iconSize) {
icon = generateAndSaveIcon(content, iconSize);
} else {
icon = bicon;
}
} catch (IOException ex) {
logger.log(Level.WARNING, "Error while reading image.", ex); // NON-NLS
icon = DEFAULT_ICON;
}
} else { // Make a new icon
icon = generateAndSaveIcon(content, iconSize);
}
return icon;
}
/**
* Get the cached file of the icon. Generates the icon and its file if it doesn't already exist,
* so this method guarantees to return a file that exists.
*
* @param content
* @param iconSize
* @return
*/
public static File getIconFile(Content content, int iconSize) {
if (getIcon(content, iconSize) != null) {
return getFile(content.getId());
}
return null;
}
/**
* Get the cached file of the content object with the given id.
*
* <p>The returned file may not exist.
*
* @param id
* @return
*/
public static File getFile(long id) {
return new File(Case.getCurrentCase().getCacheDirectory() + File.separator + id + ".png");
}
/**
* Check if is jpeg file based on header
*
* @param file
* @return true if jpeg file, false otherwise
*/
public static boolean isJpegFileHeader(AbstractFile file) {
if (file.getSize() < 100) {
return false;
}
byte[] fileHeaderBuffer = new byte[2];
int bytesRead;
try {
bytesRead = file.read(fileHeaderBuffer, 0, 2);
} catch (TskCoreException ex) {
// ignore if can't read the first few bytes, not a JPEG
return false;
}
if (bytesRead != 2) {
return false;
}
/*
* Check for the JPEG header. Since Java bytes are signed, we cast them
* to an int first.
*/
return (((fileHeaderBuffer[0] & 0xff) == 0xff) && ((fileHeaderBuffer[1] & 0xff) == 0xd8));
}
private static Image generateAndSaveIcon(Content content, int iconSize) {
Image icon = null;
try {
icon = generateIcon(content, iconSize);
if (icon == null) {
return DEFAULT_ICON;
} else {
File f = getFile(content.getId());
if (f.exists()) {
f.delete();
}
ImageIO.write((BufferedImage) icon, "png", getFile(content.getId())); // NON-NLS
}
} catch (IOException ex) {
logger.log(Level.WARNING, "Could not write cache thumbnail: " + content, ex); // NON-NLS
}
return icon;
}
/*
* Generate a scaled image
*/
private static BufferedImage generateIcon(Content content, int iconSize) {
InputStream inputStream = null;
try {
inputStream = new ReadContentInputStream(content);
BufferedImage bi = ImageIO.read(inputStream);
if (bi == null) {
logger.log(Level.WARNING, "No image reader for file: " + content.getName()); // NON-NLS
return null;
}
BufferedImage biScaled = ScalrWrapper.resizeFast(bi, iconSize);
return biScaled;
} catch (OutOfMemoryError e) {
logger.log(
Level.WARNING, "Could not scale image (too large): " + content.getName(), e); // NON-NLS
return null;
} catch (Exception e) {
logger.log(Level.WARNING, "Could not scale image: " + content.getName(), e); // NON-NLS
return null;
} finally {
if (inputStream != null) {
try {
inputStream.close();
} catch (IOException ex) {
logger.log(
Level.WARNING,
"Could not close input stream after resizing thumbnail: " + content.getName(),
ex); // NON-NLS
}
}
}
}
}
