/**
* Method to display pixel information for the passed x and y
*
* @param pictureX the x value in the picture
* @param pictureY the y value in the picture
*/
private void displayPixelInformation(int pictureX, int pictureY) {
// check that this x and y are in range
if (isLocationInPicture(pictureX, pictureY)) {
// save the current x and y index
colIndex = pictureX;
rowIndex = pictureY;
// get the pixel at the x and y
Pixel pixel = new Pixel(picture, colIndex, rowIndex);
// set the values based on the pixel
colValue.setText(Integer.toString(colIndex + numberBase));
rowValue.setText(Integer.toString(rowIndex + numberBase));
rValue.setText("R: " + pixel.getRed());
gValue.setText("G: " + pixel.getGreen());
bValue.setText("B: " + pixel.getBlue());
colorPanel.setBackground(new Color(pixel.getRed(), pixel.getGreen(), pixel.getBlue()));
} else {
clearInformation();
}
// notify the image display of the current x and y
imageDisplay.setCurrentX((int) (colIndex * zoomFactor));
imageDisplay.setCurrentY((int) (rowIndex * zoomFactor));
}
/** Create and initialize the scrolling image */
private void createAndInitScrollingImage() {
scrollPane = new JScrollPane();
BufferedImage bimg = picture.getBufferedImage();
imageDisplay = new ImageDisplay(bimg);
imageDisplay.addMouseMotionListener(this);
imageDisplay.addMouseListener(this);
imageDisplay.setToolTipText("Click a mouse button on a pixel to see the pixel information");
scrollPane.setViewportView(imageDisplay);
pictureFrame.getContentPane().add(scrollPane, BorderLayout.CENTER);
}
/**
* Zooms in the on picture by scaling the image. It is extremely memory intensive.
*
* @param factor the amount to zoom by
*/
public void zoom(double factor) {
// save the current zoom factor
zoomFactor = factor;
// calculate the new width and height and get an image that size
int width = (int) (picture.getWidth() * zoomFactor);
int height = (int) (picture.getHeight() * zoomFactor);
BufferedImage bimg = picture.getBufferedImage();
// set the scroll image icon to the new image
imageDisplay.setImage(bimg.getScaledInstance(width, height, Image.SCALE_DEFAULT));
imageDisplay.setCurrentX((int) (colIndex * zoomFactor));
imageDisplay.setCurrentY((int) (rowIndex * zoomFactor));
imageDisplay.revalidate();
checkScroll(); // check if need to reposition scroll
}