本例设置为垂直左侧scroll
主要思想是利用一个长度为0的mid_frame,高度为待设置qwidget的高度,用mid_frame的moveEvent事件驱动qwidget的move
我项目的效果图:
代码及注释
from PyQt5.Qt import * from sys import argv # 主窗口 class Main(QMainWindow): def __init__(self): super().__init__(None) self.setGeometry(500,500,500) # 实例化 self.main = MainFrame(self) self.scroll = ScrollFrame(self,self.main,40) self.show() def resizeEvent(self,e): # resize改变scroll窗口的高度使其与自己相同 self.scroll.resize(self.scroll.width(),self.height()) #需要配备scroll的窗口 class MainFrame(QFrame): def __init__(self,father): super().__init__(father) self.father = father self.setGeometry(50,50,100,1500) # 测试按钮 for i in range(15): b = QPushButton(str(i),self) b.setGeometry(0,i*100,100) # 自定义滚轮事件 def wheelEvent(self,e): if e.angleDelta().y() > 0: self.move(self.x(),self.y() + 60) else: self.move(self.x(),self.y() - 60) # 改变scroll的值 self.father.scroll.bar.setValue(abs(self.y())) def resizeEvent(self,e): # resize改变mid_frame的高度使其与自己相同 self.father.scroll.mid_frame.setGeometry(0,self.height()) # 承载scrollarea的窗口 class ScrollFrame(QFrame): def __init__(self,father,parent,pos_x): super().__init__(father) self.parent_,self.father,self.pox_x = parent,pos_x self.mid_frame = MidFrame(self) self.mid_frame.setGeometry(0,self.parent_.height()) self.scroll = QScrollArea() # 实例化verticalbar以供改变scroll的值 self.bar = self.scroll.verticalScrollBar() # 绑定中间窗口 self.scroll.setWidget(self.mid_frame) # 自动隐藏和出现 self.scroll.setVerticalScrollBarPolicy(Qt.ScrollBarAsNeeded) # 加入到承载frame layout = QGridLayout(self) layout.addWidget(self.scroll,0) self.setLayout(layout) # 设置承载fram的size和scrollarea一样 self.setGeometry(pos_x,20,self.father.height()) def resizeEvent(self,e): # resize改变scroll的s高度使其与自己一样 self.scroll.setGeometry(0,self.height()) # 接受scroll事件的中间窗口 class MidFrame(QFrame): def __init__(self,father): super().__init__(father) self.father = father def moveEvent(self,e): # move事件绑定实际滚动窗口的move self.father.parent_.move(self.father.parent_.x(),e.pos().y()) app = QApplication(argv) main = Main() app.exec_()
本例效果:
原文链接:https://www.f2er.com/python/526785.html