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JavaFX 2 Save crisp snapshot of scene to disk [duplicate]

This question already has an answer here:
How to save a high DPI snapshot of a JavaFX Canvas
(1 answer)
Closed 7 years ago.
I'm trying to save a snapshot of my application to disk using JavaFX 2, which should be easy considering FX comes with a built-in snapshot function. It does work, however, the image is fuzzy. The application I'm building relies greatly on getting these images to save clear and crisp. Anyone know why this happens? Or how to fix it so it saves what I'm actually seeing when the app runs?
The top image is what saved to disk, the bottom is my app running:
My code for saving the scene is below:
try
{
WritableImage wi = new WritableImage((int) scene.getWidth(), (int) scene.getHeight());
WritableImage snapshot = scene.snapshot(wi);
File output = new File("Full.png");
ImageIO.write(SwingFXUtils.fromFXImage(snapshot, null), "png", output);
} catch (IOException ex) {
ex.printStackTrace();
}

It looks as if you are running your code on a Mac with Retina display. If that is the case, the answer is here:
How to save a high DPI snapshot of a JavaFX Canvas

add badge to tray icon (java)

i have created a simple app in java to show a tray icon and from there show a list of JIRA issues that are assigned to me.
what i have at the moment is a tray icon that when you right click on it brungs up a popup message with the last 10 open issues assigned to me, when you click a menu item it directs you to the desired issue in your browser of choice.
What i would now like it to do is display a badge over the top of the tray icon that shows how many open issues i have. i have the code to find the number of issues but i cant for the life of me work out how to add the badge to the tray icon.
im using :
java.awt.MenuItem;
java.awt.PopupMenu;
java.awt.SystemTray;
java.awt.TrayIcon;
to create the tray icon and popup menu.
any help would be greatly appreciated
Thanks

Okay so i figured it out,
first i select the original icon:
BufferedImage im = ImageIO.read(Systray.class.getResource("icon.gif"));
then i use Graphics2D to draw ontop of the image:
Graphics2D g2 = im.createGraphics();
g2.setColor(Color.BLACK);
g2.drawString("10", 2, 10);
ByteArrayOutputStream baos = new ByteArrayOutputStream();
ImageIO.write(im, "png", baos);
byte[] b = baos.toByteArray();
then i create a new image icon from the byte array:
ImageIcon imgTmp = new ImageIcon(b);
finally i set the tray icon:
_icon.setImage(imgTmp.getImage());
(_icon is an instance of TrayIcon)
i hope that this helps someone else and if you have a better solution id love to see it

Programatically getting a screenshot of a Java applet

I have tried to devise a way to get a screenshot of a Java applet running in a browser, but I can't seem to get it working. I managed successfully to use cutycapt to get screenshots fine from "normal" websites, but I soon found out that qtwebkit which it seems to rely on for the rendering does not support java. I also tried IEcapt thinking that it would somehow inherit the Java rendering capabilities of IE on the system, but it does not work. Flash also does not seem to be working in IEcapt, and it has no flags for enabling plugins, so I am assuming the functionality is not there either.
Does anyone have any thoughts on how you could render something like an /index.jsp to an image from a Windows or Linux command line?

Selenium webdriver might be useful here:
http://docs.seleniumhq.org/projects/webdriver/
It is used primarily for test automation but it might be helpful.
It could be used, for example, like this:
import org.openqa.selenium.*;
WebDriver driver = new FirefoxDriver(); // create a Firefox webdriver instance
driver.get("http://www.google.com/"); // navigate to page
File screenshotFile = ((Screenshot)driver).getScreenshotAs(file); // capture screenshot
// and save to a file
// here you can trigger any necessary actions on the website:
Webelement element = driver.findElement(By.name("q")).sendKeys("xxxxx");
element.click();
new WebDriverWait(driver, 10)).until(ExpectedConditions.titleContains("xxxxx"));
// and capture a new screenshot once the content has changed
File xxxScreenshotFile = ((Screenshot)driver).getScreenshotAs(file);

Have you tried using java.awt.Robot?
Rectangle rect = yourGragphicsConfiguration.getBounds();
BufferedImage image = new Robot().createScreenCapture(rect);
If you know the position of your applet you might be able to get it with
BufferedImage dest = image.getSubimage(appletX, appletY, appletHeight, appletWidth);

You can take a screenshot of Swing/AWT component.
This can be done in 2 ways. In both cases the component must be visible.
Without the robot use:
BufferedImage image = new BufferedImage(component.getWidth(),
component.getHeight(), BufferedImage.TYPE_INT_ARGB);
Graphics g = image.getGraphics();
component.paint(g);
With the robot use:
In this case the screenshot of area in which this component is situated will be made. That is, if the component overlaps another application window then the screenshot will contain an area of this another window.
Point point = new Point(0, 0);
SwingUtilities.convertPointToScreen(point, component);
Rectangle region = component.getBounds();
region.x = point.x;
region.y = point.y;
BufferedImage image= new Robot().createScreenCapture(region);
This information is taken from the article: Frequently Asked Questions during Java applet development

Take a screenshot of a specific application on Windows (.exe) in java

Is it possible to take a screen capture of a specific application/exe launched on Windows in Java?
I tried this code but it does not take a capture of the application itself and return a black picture:
try {
...
Robot robot = new Robot();
Rectangle captureSize = new Rectangle(Toolkit.getDefaultToolkit().getScreenSize());
BufferedImage bufferedImage = robot.createScreenCapture(captureSize);
ImageIO.write(bufferedImage,"png",myFile);
...
} catch(AWTException e) {
System.err.println("call a doc!");
}
This is why I think that forcing a screenshot linked with the process launched may solve the problem.
Or maybe they are other ways to take a capture of the displayed screen? (if yes could you please show me some working code?)

Encoding transparent animated gif in Java

I am using GifDecoder to read an animated .gif file and AnimGifEncoder to write it. (link)
If I display the original frames read by GifDecoder they display correctly and are transparent, but if I display the frames created by AnimatedGifEncoder the transparency is all wrong.
GifDecoder gif = new GifDecoder();
gif.read("image.gif");
AnimatedGifEncoder e = new AnimatedGifEncoder();
e.start("newimage.gif");
e.setTransparent(Color.BLACK);
for (int i=0;i<gif.getFrameCount();i++) {
anim.addFrame(gif.getFrame(i));
anim.setDelay(gif.getDelay(i));
}
anim.finish();
In this example I set the transparent color to black. But actually I want to get the transparent color information from the GifDecoder but I don't know how.

I'm using the following solution, although there are still some gif files that
are a mess after scaling... :
(At least it seems to get along with most non-transparent gifs)
Color transparentColor = null;
BufferedImage firstFrameImage = ImageIO.read([sourceFileHere]);
if (firstFrameImage.getColorModel() instanceof IndexColorModel) {
IndexColorModel cm = (IndexColorModel) firstFrameImage.getColorModel();
int transparentPixel = cm.getTransparentPixel();
transparentColor = new Color(cm.getRGB(transparentPixel), true);
}
e.setTransparent(transparentColor);

This was all a long time ago, but I did manage to get it working at the time. Without digging out the code again... I got it working by:
Scan the original image and set the transparent areas to a colour that does not exist inside the original image.
Set the transparent colour inside the AnimGifEncoder to the colour that was previously assigned to the transparent areas.