Reputation: 140

Java - Get Window Position Without Border

I'm trying to take a window screenshot to use that as background in the application.

This is my code:

try {
    Robot robot = new Robot();
    Rectangle captureSize = new Rectangle(new MainWindow().getX(), new MainWindow().getY(), MainWindow.getWIDTH(), MainWindow.getHEIGHT());
    RenderManager.backgroundGUIs = robot.createScreenCapture(captureSize);
    GUIManager.ThisGui = new GUI("inventory", null, false);
} catch(AWTException e) {
    System.err.println("Error taking screenshot!");
}

And these are the MainWindow().getY() and MainWindow().getX() methods:

public int getX() {
    return (int) frame.getLocationOnScreen().getX();
}

public int getY() {
    return frame.getY();
}

Now... it works fine, but there is a problem. frame.getLocationOnScreen().getX() and frame.getX() return the location with the window border, that hasn't to be in the screensot. Ok, i can manually calculate border size to subtract it, but from Windows 7 to Windows 8, from Windows 8 to Mac, etc. window border changes.

So... is there a method to get frame position or window border size to calculate what i need?

Thank you for your time and your answer!

Upvotes: 0

Answers (4)

Keegan Teetaert

Reputation: 673

int mouseX = MouseInfo.getPointerInfo().getLocation().getX() - frame.getX() - frame.getRootPane().getX();
int mouseY = MouseInfo.getPointerInfo().getLocation().getY() - frame.getY() - frame.getRootPane().getY();

This gives the top right point within the border / tab of a frame

Upvotes: 0

camickr

Reputation: 324118

Check out the Screen Image class. You can create an image of any component displayed on the frame.

So you could use frame.getRootPane() as the component you want the image of.

Or frame.getContentPane() if you don't want the menu bar. I think this method returns a Container object so you will need to cast is to a JComponent.

Upvotes: 0