def wheelEvent(self, ev: QtGui.QWheelEvent):
if not self.pixmap():
return
mods = ev.modifiers()
delta = ev.angleDelta()
up = delta.y() > 0
if int(mods) == QtCore.Qt.ControlModifier:
scale = self.scale * 1.1 if up else self.scale * 0.9
self.zoomChanged.emit(scale)
else:
curIdx = self.sliceIndex()
v = curIdx - 1 if up else curIdx + 1
self._slider.setValue(v)
def __cloneMouseWheelEvent(self, e: QWheelEvent):
pos = e.pos()
globalPos = e.globalPos()
pixelDelta = e.pixelDelta()
angleDelta = e.angleDelta()
buttons = e.buttons()
modifiers = e.modifiers()
phase = e.phase()
inverted = e.inverted()
clone = QWheelEvent(pos, globalPos, pixelDelta, angleDelta, buttons,
modifiers, phase, inverted)
clone.ignore()
clone.accepted = False
return clone
def wheelEvent(self, event: QtGui.QWheelEvent) -> None:
cpt = QPoint_to_point(event.pos())
if not event.modifiers():
step = event.angleDelta().y() / 120.0
self.zoom(step, cpt)
else:
if self.interactionDelegate:
step = event.angleDelta().y() / 120.0
if step < 0:
step = - step
code = EventID.Mouse_WheelDown
else:
code = EventID.Mouse_WheelUp
w_pt = self.viewState.tfV2W(cpt)
tool_event = ToolActionEvent(code, cpt, w_pt, step)
self.interactionDelegate.tool_event(tool_event)
self.update()