private int getMask(final InputEvent e) {
final int modifiers = e.getModifiers();
final int modifiersEx = e.getModifiersEx();
int mask = modifiersEx;
/*
* For scrolling AWT uses the SHIFT_DOWN_MASK to indicate horizontal scrolling.
* We keep track of whether the SHIFT key was actually pressed for disambiguation.
*/
if (shiftPressed) mask |= InputEvent.SHIFT_DOWN_MASK;
else mask &= ~InputEvent.SHIFT_DOWN_MASK;
/*
* On OS X AWT sets the META_DOWN_MASK to for right clicks. We keep
* track of whether the META key was actually pressed for
* disambiguation.
*/
if (metaPressed) mask |= InputEvent.META_DOWN_MASK;
else mask &= ~InputEvent.META_DOWN_MASK;
/*
* We add the button modifiers to modifiersEx such that the
* XXX_DOWN_MASK can be used as the canonical flag. E.g. we adapt
* modifiersEx such that BUTTON1_DOWN_MASK is also present in
* mouseClicked() when BUTTON1 was clicked (although the button is no
* longer down at this point).
*
* ...but only if its not a MouseWheelEvent because OS X sets button
* modifiers if ALT or META modifiers are pressed.
*/
if (!(e instanceof MouseWheelEvent)) {
if ((modifiers & InputEvent.BUTTON1_MASK) != 0) mask |= InputEvent.BUTTON1_DOWN_MASK;
if ((modifiers & InputEvent.BUTTON2_MASK) != 0) mask |= InputEvent.BUTTON2_DOWN_MASK;
if ((modifiers & InputEvent.BUTTON3_MASK) != 0) mask |= InputEvent.BUTTON3_DOWN_MASK;
}
/*
* On OS X AWT sets the BUTTON3_DOWN_MASK for meta+left clicks. Fix
* that.
*/
if (modifiers == OSX_META_LEFT_CLICK) mask &= ~InputEvent.BUTTON3_DOWN_MASK;
/*
* On OS X AWT sets the BUTTON2_DOWN_MASK for alt+left clicks. Fix
* that.
*/
if (modifiers == OSX_ALT_LEFT_CLICK) mask &= ~InputEvent.BUTTON2_DOWN_MASK;
/*
* On OS X AWT sets the BUTTON2_DOWN_MASK for alt+right clicks. Fix
* that.
*/
if (modifiers == OSX_ALT_RIGHT_CLICK) mask &= ~InputEvent.BUTTON2_DOWN_MASK;
/*
* Deal with double-clicks.
*/
if (e instanceof MouseEvent && ((MouseEvent) e).getClickCount() > 1)
mask |= InputTrigger.DOUBLE_CLICK_MASK; // mouse
else if (e instanceof KeyEvent) {
// double-click on keys.
if ((e.getWhen() - timeKeyDown) < DOUBLE_CLICK_INTERVAL)
mask |= InputTrigger.DOUBLE_CLICK_MASK;
else timeKeyDown = e.getWhen();
}
if (e instanceof MouseWheelEvent) mask |= InputTrigger.SCROLL_MASK;
return mask;
}
/**
* Returns true if the system's shortcut key was pressed.
*
* @param e input event
* @return result of check
*/
public static boolean sc(final InputEvent e) {
return (SC & e.getModifiers()) == SC;
}
/**
* Indicates if a given mouse button is being pressed.
*
* @param e the InputEvent to check
* @param button the mouse button to look for
* @return true if the button is being pressed, false otherwise
* @see prefuse.controls.Control
*/
public static boolean isButtonPressed(InputEvent e, int button) {
return (e.getModifiers() & button) == button;
}