2021-04-16 23:21:06 +08:00
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# ----------------------------------------------------------------------------
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# pyglet
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# Copyright (c) 2006-2008 Alex Holkner
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2021-04-17 01:14:38 +08:00
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# Copyright (c) 2008-2021 pyglet contributors
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2021-04-16 23:21:06 +08:00
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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#
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# * Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# * Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in
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# the documentation and/or other materials provided with the
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# distribution.
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# * Neither the name of pyglet nor the names of its
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# contributors may be used to endorse or promote products
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# derived from this software without specific prior written
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# permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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# ----------------------------------------------------------------------------
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"""Mouse constants and utilities for pyglet.window.
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"""
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class MouseStateHandler(dict):
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"""Simple handler that tracks the state of buttons from the mouse. If a
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button is pressed then this handler holds a True value for it.
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For example::
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>>> win = window.Window()
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>>> mousebuttons = mouse.MouseStateHandler()
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>>> win.push_handlers(mousebuttons)
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# Hold down the "left" button...
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>>> mousebuttons[mouse.LEFT]
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True
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>>> mousebuttons[mouse.RIGHT]
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False
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"""
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def on_mouse_press(self, x, y, button, modifiers):
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self[button] = True
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def on_mouse_release(self, x, y, button, modifiers):
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self[button] = False
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def __getitem__(self, key):
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return self.get(key, False)
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def buttons_string(buttons):
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"""Return a string describing a set of active mouse buttons.
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Example::
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>>> buttons_string(LEFT | RIGHT)
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'LEFT|RIGHT'
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:Parameters:
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`buttons` : int
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Bitwise combination of mouse button constants.
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:rtype: str
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"""
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button_names = []
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if buttons & LEFT:
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button_names.append('LEFT')
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if buttons & MIDDLE:
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button_names.append('MIDDLE')
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if buttons & RIGHT:
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button_names.append('RIGHT')
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return '|'.join(button_names)
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# Symbolic names for the mouse buttons
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LEFT = 1 << 0
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MIDDLE = 1 << 1
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RIGHT = 1 << 2
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