87 lines
2.0 KiB
Python
87 lines
2.0 KiB
Python
"""Mouse constants and utilities for pyglet.window.
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"""
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class MouseStateHandler:
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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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If the window loses focus, all buttons will be reset to False in order
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to avoid a "sticky" button state.
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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 __init__(self):
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self.data = {
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"x": 0,
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"y": 0,
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}
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def on_mouse_press(self, x, y, button, modifiers):
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self.data[button] = True
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def on_mouse_release(self, x, y, button, modifiers):
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self.data[button] = False
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def on_deactivate(self):
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self.data.clear()
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def on_mouse_motion(self, x, y, dx, dy):
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self.data["x"] = x
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self.data["y"] = y
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def on_mouse_drag(self, x, y, dx, dy, buttons, modifiers):
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self.data["x"] = x
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self.data["y"] = y
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def __getitem__(self, key):
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return self.data.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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if buttons & MOUSE4:
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button_names.append("MOUSE4")
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if buttons & MOUSE5:
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button_names.append("MOUSE5")
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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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MOUSE4 = 1 << 3
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MOUSE5 = 1 << 4
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