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# Copyright (c) 2022 Ultimaker B.V.
# Uranium is released under the terms of the LGPLv3 or higher.
from PyQt6.QtCore import Qt, QEvent
from UM.InputDevice import InputDevice
from UM.Event import MouseEvent, WheelEvent
class QtMouseDevice(InputDevice):
"""An InputDevice subclass that processes Qt mouse events and returns a UM.Event.MouseEvent"""
def __init__(self, window):
super().__init__()
self._x = None
self._y = None
self._window = window
def handleEvent(self, event):
if event.type() == QEvent.Type.MouseButtonPress:
ex, ey = self._normalizeCoordinates(event.pos().x(), event.pos().y())
e = MouseEvent(MouseEvent.MousePressEvent, ex, ey, self._x, self._y, self._qtButtonsToButtonList(event.buttons()))
self._x = ex
self._y = ey
self.event.emit(e)
elif event.type() == QEvent.Type.MouseMove:
ex, ey = self._normalizeCoordinates(event.pos().x(), event.pos().y())
e = MouseEvent(MouseEvent.MouseMoveEvent, ex, ey, self._x, self._y, self._qtButtonsToButtonList(event.buttons()))
self._x = ex
self._y = ey
self.event.emit(e)
elif event.type() == QEvent.Type.MouseButtonRelease:
ex, ey = self._normalizeCoordinates(event.pos().x(), event.pos().y())
e = MouseEvent(MouseEvent.MouseReleaseEvent, ex, ey, self._x, self._y, self._qtButtonsToButtonList(event.button()))
self._x = ex
self._y = ey
self.event.emit(e)
elif event.type() == QEvent.Type.Wheel:
delta = event.angleDelta()
e = WheelEvent(delta.x(), delta.y())
self.event.emit(e)
def _qtButtonsToButtonList(self, qt_buttons):
buttons = []
if qt_buttons == Qt.MouseButton.LeftButton.value:
buttons.append(MouseEvent.LeftButton)
if qt_buttons == Qt.MouseButton.RightButton.value:
buttons.append(MouseEvent.RightButton)
if qt_buttons == Qt.MouseButton.MiddleButton.value:
buttons.append(MouseEvent.MiddleButton)
return buttons
def _normalizeCoordinates(self, x, y):
try:
nx = 2.0 * (x / self._window.width()) - 1.0
ny = 2.0 * (y / self._window.height()) - 1.0
except ZeroDivisionError:
return 0, 0
return nx, ny
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