Java Utililty Methods Screen Center

List of utility methods to do Screen Center

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Description

The list of methods to do Screen Center are organized into topic(s).

Method

java.awt.PointgetFrameCenteredLocation(final java.awt.Component centerThis, final Component parent)
Get the location for centered Dialog 
java.awt.Dimension screenSize = (parent == null) ? java.awt.Toolkit.getDefaultToolkit().getScreenSize()
        : parent.getSize();
int x = (screenSize.width - centerThis.getWidth()) >> 1;
int y = (screenSize.height - centerThis.getHeight()) >> 1;
if (parent != null) {
    x += parent.getX();
    y += parent.getY();
if (x < 0)
    x = 0;
if (y < 0)
    y = 0;
return new java.awt.Point(x, y);
PointgetFrameOnCenterLocationPoint(Window window)
Returns the location of point of window, when it should be on center of the screen. 
Dimension size = window.getSize();
int width = (int) ((Toolkit.getDefaultToolkit().getScreenSize().width / (double) 2)
        - (size.getWidth() / (double) 2));
int height = (int) ((Toolkit.getDefaultToolkit().getScreenSize().height / (double) 2)
        - (size.getHeight() / (double) 2));
return new Point(width, height);
PointgetLocationToCenterOnScreen(Component comp)
given any component, returns a location for the top left corner of the component that will center it on the screen 
Dimension screenDim = comp.getToolkit().getScreenSize();
Dimension compDim = comp.getSize();
return new Point(Math.max(0, (screenDim.width - compDim.width) / 2),
        Math.max(0, (screenDim.height - compDim.height) / 2));
floatgetPercentageOnScreen(Point location, Dimension size, Rectangle screen)
get Percentage On Screen 
Rectangle frameBounds = new Rectangle(location, size);
Rectangle2D intersection = frameBounds.createIntersection(screen);
int frameArea = size.width * size.height;
int intersectionArea = (int) (intersection.getWidth() * intersection.getHeight());
float percentage = (float) intersectionArea / frameArea;
return percentage < 0 ? 0 : percentage;
voidlocateOnScreenCenter(Component component)
Locates the given component on the screen's center. 
Dimension paneSize = component.getSize();
Dimension screenSize = component.getToolkit().getScreenSize();
component.setLocation((screenSize.width - paneSize.width) / 2, (screenSize.height - paneSize.height) / 2);
voidmoveToCenter(Component componentToMove, Component componentToCenterOver)
Centers componentToMove over componentToCenterOver. 
try {
    int centerX, centerY;
    if (componentToCenterOver == null) {
        Point p = GraphicsEnvironment.getLocalGraphicsEnvironment().getCenterPoint();
        centerX = p.x;
        centerY = p.y;
    } else {
        try {
...
voidmoveToScreenCenter(Window w)
move To Screen Center 
Dimension screen = Toolkit.getDefaultToolkit().getScreenSize();
w.setLocation((screen.width - w.getWidth()) / 2, (screen.height - w.getHeight()) / 2);
voidpackAndCenter(Window wind)
Packs and centers the windows 
wind.pack();
Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
Dimension frameSize = wind.getSize();
if (frameSize.height > screenSize.height) {
    frameSize.height = screenSize.height;
if (frameSize.width > screenSize.width) {
    frameSize.width = screenSize.width;
...
voidpackAndCenter(Window window)
packs a window and centers is onscreen 
window.pack();
Dimension size = window.getSize();
Dimension screen = Toolkit.getDefaultToolkit().getScreenSize();
window.setLocation((screen.width - size.width) / 2, (screen.height - size.height) / 2);
voidscreenCenter(Window window)
Center screen 
Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
Dimension frameSize = window.getSize();
if (frameSize.height > screenSize.height) {
    frameSize.height = screenSize.height;
if (frameSize.width > screenSize.width) {
    frameSize.width = screenSize.width;
window.setLocation((screenSize.width - frameSize.width) / 2, (screenSize.height - frameSize.height) / 2);