我曾经有一段时间在Maya练习PySide,现在我想拥有不同缩放范围的UI。基本上,当我放大某个范围时,我希望看到一种类型的按钮,当我缩小时,再次按下不同的按钮。有谁知道我可以查看哪种布局或一些例子?谢谢。
对于缩放我有一个自定义QGraphicsView,看起来像:
from PyQt5.QtWidgets import QGraphicsView, QSizePolicy
class GraphicsView(QGraphicsView):
def __init__(self):
super(GraphicsView, self).__init__()
# Graphics view variables
self.start = None
self.end = None
self.box_list = list()
self.__zoom = 0
self.setSizePolicy(QSizePolicy(QSizePolicy.Expanding, QSizePolicy.Expanding))
def wheelEvent(self, event):
if event.angleDelta().y() > 0:
factor = 1.25
self.__zoom += 1
else:
factor = 0.8
if self.__zoom > 0:
self.scale(factor, factor)
elif self.__zoom == 0:
# self.fitInView()
pass
else:
self.__zoom = 0
基于此,你可以有一个pysignal并在某些自我.__缩放级别发射,允许你将该信号连接到一个负责更改工具栏或任何你需要的方法。
例如:
from PyQt5.QtWidgets import QGraphicsView, QSizePolicy
from PyQt5.QtCore import pyqtSignal
class GraphicsView(QGraphicsView):
zoom_signal = pyqtSignal(bool)
def __init__(self):
super(GraphicsView, self).__init__()
# Graphics view variables
self.start = None
self.end = None
self.box_list = list()
self.__zoom = 0
self.setSizePolicy(QSizePolicy(QSizePolicy.Expanding, QSizePolicy.Expanding))
def wheelEvent(self, event):
if event.angleDelta().y() > 0:
factor = 1.25
self.__zoom += 1
else:
factor = 0.8
if self.__zoom > 0:
self.scale(factor, factor)
if self.__zoom > 10:
self.zoom_signal.emit(True)
elif self.__zoom < 10:
self.zoom_signal.emit(False)
else:
self.__zoom = 0
这可能无法满足您的需求,但概念就在那里,可以修改为您想要的。