Poses component inside the screen bounds - Java Swing

Java examples for Swing:Screen

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Description

Poses component inside the screen bounds

Demo Code


//package com.java2s;
import java.awt.GraphicsDevice;
import java.awt.GraphicsEnvironment;
import java.awt.Point;
import java.awt.Rectangle;
import javax.swing.JDialog;

public class Main {
    /**/*  w ww  .ja  va 2s.c o m*/
     * Poses component inside the screen bounds
     * @param component - JDialog component which is posed
     */
    public static void poseInsideScreen(JDialog component) {
        Rectangle componentBounds = component.getBounds();
        Rectangle screenBounds = getVirtualBounds();
        Point newLocation;
        int newLocationX;
        int newLocationY;

        if (!isInsideScreen(component)) {
            if (componentBounds.getX() < 0)
                newLocationX = 0;
            else if (componentBounds.getX() + componentBounds.getWidth() > screenBounds
                    .getWidth())
                newLocationX = screenBounds.width - componentBounds.width;
            else
                newLocationX = componentBounds.x;

            if (componentBounds.getY() < 0)
                newLocationY = 0;
            else if (componentBounds.getY() + componentBounds.getHeight() > screenBounds
                    .getHeight())
                newLocationY = screenBounds.height - componentBounds.height;
            else
                newLocationY = componentBounds.y;

            newLocation = new Point(newLocationX, newLocationY);
            component.setLocation(newLocation);
        }
    }

    /**
     * Returns the screen bounds.
     * @return bounds of the screen
     */
    public static Rectangle getVirtualBounds() {
        Rectangle bounds = new Rectangle(0, 0, 0, 0);
        GraphicsEnvironment ge = GraphicsEnvironment
                .getLocalGraphicsEnvironment();
        GraphicsDevice lstGDs[] = ge.getScreenDevices();
        for (GraphicsDevice gd : lstGDs) {
            bounds.add(gd.getDefaultConfiguration().getBounds());
        }
        return bounds;
    }

    /**
     * Checks if component is inside the screen bounds
     * @param component - JDialog component which position is checked
     * @return true if component inside the screen bounds, false otherwise
     */
    public static boolean isInsideScreen(JDialog component) {
        boolean inside;
        Rectangle virtualBounds = getVirtualBounds();
        inside = virtualBounds.contains(component.getBounds());
        return inside;
    }
}

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