# ----------------------------------------------------------------------------
# pyglet
# Copyright (c) 2006-2008 Alex Holkner
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'''Mouse constants and utilities for pyglet.window.
'''

__docformat__ = 'restructuredtext'
__version__ = '$Id: mouse.py 1579 2008-01-15 14:47:19Z Alex.Holkner $'

def buttons_string(buttons):
    '''Return a string describing a set of active mouse buttons.

    Example::

        >>> buttons_string(LEFT | RIGHT)
        'LEFT|RIGHT'

    :Parameters:
        `buttons` : int
            Bitwise combination of mouse button constants.

    :rtype: str
    '''
    button_names = []
    if buttons & LEFT:
        button_names.append('LEFT')
    if buttons & MIDDLE:
        button_names.append('MIDDLE')
    if buttons & RIGHT:
        button_names.append('RIGHT')
    return '|'.join(button_names)

# Symbolic names for the mouse buttons
LEFT =   1 << 0
MIDDLE = 1 << 1
RIGHT =  1 << 2