def wheelEvent(self, event: QWheelEvent):
'''
Wheelevent
Parameters
----------
event : QWheelEvent
'''
event.accept()
direction = event.angleDelta().y()
horizontal_bar = self.horizontalScrollBar()
delta = (20 if direction < 0 else -20)
horizontal_bar.setValue(self.horizontalScrollBar().value() + delta)
def wheelEvent(self, event: QWheelEvent) -> None:
"""Switch function by mouse wheel.
+ Set zoom bar value.
+ Set select mode.
"""
p = event.angleDelta()
if QApplication.keyboardModifiers() == Qt.ShiftModifier:
value = p.y()
elif p.x() != 0:
value = p.x()
elif p.y() != 0:
value = self.prefer.scale_factor_option * (1 if p.y() > 0 else -1)
value += self.zoom_value()
self.set_zoom_bar(value)
return
else:
return
tags = ("Points", "Links")
mode = (self.selection_mode() + (-1 if value > 0 else 1)) % len(tags)
self.selection_mode_wheel(mode)
QToolTip.showText(event.globalPos(), f"Selection mode: {tags[mode]}", self)
event.accept()
def wheelEvent(self, event: QtGui.QWheelEvent):
# limit wheelevents to max N events in T seconds to avoid hanging GUI because of zooming in and out non-stop
PlotArea.wheelEventsCounter = PlotArea.wheelEventsCounter + 1
# print(PlotArea.wheelEventsCounter)
if PlotArea.wheelEventsCounter > 3:
qInfo('Zooming speed limited to optimize performance.')
return
super().wheelEvent(event)
newRange = self.main_vb.viewRange()[0]
if self.main_window.selectedView is not None:
maxX = self.main_window.selectedView.panel.get_max_duration()
else:
return
if newRange[-1] > maxX:
newRange[-1] = maxX
if newRange[0] < 0:
newRange[0] = 0
if newRange[0] == 0:
self.main_vb.setXRange(newRange[0], newRange[1], padding=0)
else:
self.main_vb.setXRange(newRange[0], newRange[1])
event.accept()
def wheelEvent(self, event: QWheelEvent) -> None:
scale = 1.25
maxZoom = 2
minZoom = 0.5
transform: QTransform = self.transform()
zoom = transform.m11()
# zoom in and out with the mouse setting origin
if (event.angleDelta().y() > 0) and (zoom < maxZoom):
self.scale(scale, scale)
pos: QPointF = self.mapToScene(event.pos())
self.translate(-(scale - 1) * pos.x(), -(scale - 1) * pos.y())
elif (event.angleDelta().y() < 0) and (zoom > minZoom):
self.scale(1 / scale, 1 / scale)
pos: QPointF = self.mapToScene(event.pos())
self.translate(-(1 / scale - 1) * pos.x(),
-(1 / scale - 1) * pos.y())
event.accept()
def wheelEvent(self, event: QtGui.QWheelEvent):
super().wheelEvent(event)
event.accept()
def wheelEvent(self, e: QWheelEvent):
print("myMouseWheel in Item...")
self.__m_lastMouseWheel = self.__cloneMouseWheelEvent(e)
self.__m_lastMouseWheel.ignore()
e.accept()
self.update()