get Key Mask from MouseEvent - Java Swing

Java examples for Swing:Mouse Event

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Description

get Key Mask from MouseEvent

Demo Code


//package com.java2s;
import java.awt.event.MouseEvent;

public class Main {
    /** Mask for CTRL key pressed. */
    public static final int MASK_CTRL = 0x1;
    /** Mask for ALT key pressed. */
    public static final int MASK_ALT = 0x2;
    /** Mask for SHIFT key pressed. */
    public static final int MASK_SHIFT = 0x4;
    /** Mask for ALT-GR key pressed. */
    public static final int MASK_ALT_GR = 0x8;

    /**/*from w  ww . j  a v  a2 s . c  o  m*/
     * @param evt
     *            The native mouse event to be handled.
     * @return The corresponding mask for the mouse-event.
     * @see #MASK_ALT
     * @see #MASK_ALT_GR
     * @see #MASK_CTRL
     * @see #MASK_SHIFT
     */
    public static int getKeyMask(MouseEvent evt) {
        int mask = 0;
        if (evt.isAltDown()) {
            mask |= MASK_ALT;
        }
        if (evt.isAltGraphDown()) {
            mask |= MASK_ALT_GR;
        }
        if (evt.isControlDown()) {
            mask |= MASK_CTRL;
        }
        if (evt.isShiftDown()) {
            mask |= MASK_SHIFT;
        }
        return mask;
    }
}

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