def wheelEvent(self, event: QtGui.QWheelEvent):
"""Implementation.
Handles zooming the editor's view.
"""
if (event.modifiers() & Qt.ControlModifier
and event.orientation() == Qt.Vertical):
if event.delta() > 0:
self.zoomIn()
else:
self.zoomOut()
# TODO: Improve cursor anchoring; be more like Aseprite
prevAnchor = self.transformationAnchor()
self.setTransformationAnchor(QGraphicsView.AnchorUnderMouse)
self.setTransform(QTransform.fromScale(self.zoom(), self.zoom()))
self.updateSceneRect(self.zoom())
self.setTransformationAnchor(prevAnchor)
event.accept()
elif event.orientation() == Qt.Horizontal:
# XXX: Workaround for the insane horizontal scroll delta of 15240 on the
# Logitech G502 mouse.
if abs(event.delta()) == 15240:
newDelta = 120 if event.delta() > 0 else -120
event = QtGui.QWheelEvent(event.pos(),
event.globalPos(),
newDelta,
event.buttons(),
event.modifiers(),
orient=Qt.Horizontal)
super().wheelEvent(event)
else:
super().wheelEvent(event)
def flipVertically(self):
"""Flips the tile vertically; that is, over its horizontal axis."""
flipped = QTransform.fromScale(self.scale(), self.scale() * -1)
self.setTransform(flipped)