Center Your Frames/Dialogs

You can find many tips on how to center a window within the screen, but howabout centering a window in its parent container? The following code showsyou how to do that. Say you have a JFrame (or Frame), and you launch a JDialog (or Dialog) likethis:

 JDialog jd = new JDialog(this); //you have to pass the this pointer of Frame to establish//parent-child (or owner-owned) relationshipjd.setVisible(true);

In the code for jd you can have the following to center the dialog withrespect to its ownere frame:

 public void centerInParent () {    int x;    int y;    Container parent = this.getParent();    Point topLeft = parent.getLocationOnScreen();    Dimension parentSize = parent.getSize();    Dimension ownSize = this.getSize();    if (parentSize.width < ownSize.width)         {x = ((parentSize.width - ownSize.width)/2) +
topLeft.x;} else {x = topLeft.x;} if (parentSize.height < ownSize.height) {y = ((parentSize.height - ownSize.height)/2) +
topLeft.y;} else {y = topLeft.y;} this.setLocation (x, y); this.requestFocus();}

For the sake of completeness, the following code centers a Dialog or Framewithin the screen:

 public void centerInScreen() {    Dimension dim = this.getToolkit().getScreenSize();    Rectangle bounds = this.getBounds();    this.setLocation((dim.width - bounds.width) / 2, 
(dim.height -bounds.height) / 2); this.requestFocus();}
Share the Post:
Share on facebook
Share on twitter
Share on linkedin


The Latest

your company's audio

4 Areas of Your Company Where Your Audio Really Matters

Your company probably relies on audio more than you realize. Whether you’re creating a spoken text message to a colleague or giving a speech, you want your audio to shine. Otherwise, you could cause avoidable friction points and potentially hurt your brand reputation. For example, let’s say you create a

chrome os developer mode

How to Turn on Chrome OS Developer Mode

Google’s Chrome OS is a popular operating system that is widely used on Chromebooks and other devices. While it is designed to be simple and user-friendly, there are times when users may want to access additional features and functionality. One way to do this is by turning on Chrome OS

homes in the real estate industry

Exploring the Latest Tech Trends Impacting the Real Estate Industry

The real estate industry is changing thanks to the newest technological advancements. These new developments — from blockchain and AI to virtual reality and 3D printing — are poised to change how we buy and sell homes. Real estate brokers, buyers, sellers, wholesale real estate professionals, fix and flippers, and beyond may