Question

我想通过以下方式QSplitterHandle调整仅其上方的小部件的大小：

最初在QFrame中固定所有小部件（实际上是QSplitter的最大和最小高度）。
在QSplitterHandle::mousePressEvent上“增加”最大高度，在QSplitterHandle::mouseReleaseEvent上将最大高度重置为当前高度。

代码

#! /usr/bin/python

import sys
from PySide import QtGui
from PySide import QtCore

# Custom Splitter Handle
class SplitterHandle(QtGui.QSplitterHandle):
   QWIDGET_MAX_HEIGHT = 1000

   def __init__(self, index , orientation, parent):
      super(SplitterHandle , self).__init__(orientation, parent)
      self.index = index

   def getWidget( self ):
      return self.splitter().widget( self.index )

   # Remove height restriction on corresponding widget when dragging starts
  def mousePressEvent(self ,event ):
     widget = self.getWidget()
     widget.setMinimumHeight( 100 ) # FIX
     widget.setMaximumHeight( self.QWIDGET_MAX_HEIGHT )
     return QtGui.QSplitterHandle.mousePressEvent(self,event)

  # Freeze height of corresponding widget after dragging has ends
  def mouseReleaseEvent(self ,event ):
     widget = self.getWidget()
     widget.setMinimumHeight( widget.height() ) # FIX
     widget.setMaximumHeight( widget.height() )
     return QtGui.QSplitterHandle.mousePressEvent(self,event)

# Custom Splitter
class Splitter(QtGui.QSplitter):
   def __init__( self , orientation , parent = None):
      super(Splitter , self).__init__(orientation,parent)
      self.orientation = orientation

   def createHandle( self):
      return SplitterHandle( self.count() , self.orientation , self )      


class Example(QtGui.QWidget):
   def __init__(self):
      super(Example, self).__init__()
      hbox = QtGui.QVBoxLayout(self)

      frame1 = QtGui.QFrame()
      frame1.setFrameShape(QtGui.QFrame.StyledPanel)
      frame1.setMinimumHeight( 100 )
      frame1.setMaximumHeight( 100 )
      frame1.setStyleSheet("background-color: red;");

      frame2 = QtGui.QFrame()
      frame2.setFrameShape(QtGui.QFrame.StyledPanel)
      frame2.setMinimumHeight( 100 ) 
      frame2.setMaximumHeight( 100 )
      frame2.setStyleSheet("background-color: green;");

      frame3 = QtGui.QFrame()
      frame3.setFrameShape(QtGui.QFrame.StyledPanel)
      frame3.setMinimumHeight( 100 ) 
      frame3.setMaximumHeight( 100 )
      frame3.setStyleSheet("background-color: blue;");

      frame4 = QtGui.QFrame()
      frame4.setFrameShape(QtGui.QFrame.StyledPanel)
      frame4.setMinimumHeight( 100 ) 
      frame4.setMaximumHeight( 100 )
      frame4.setStyleSheet("background-color: yellow;");

      # The "absorber"
      frame5 = QtGui.QFrame()
      frame5.setStyleSheet("background-color: white;");

      ########################

      splitter = Splitter(QtCore.Qt.Vertical)

      splitter.addWidget(frame1)
      splitter.addWidget(frame2)
      splitter.addWidget(frame3)
      splitter.addWidget(frame4)
      splitter.addWidget(frame5)

      splitter.setChildrenCollapsible( False )
      hbox.addWidget(splitter)  

      self.setGeometry(300, 300, 300, 600)
      self.setWindowTitle('--Splitter--')
      self.show()

def main():
   app = QtGui.QApplication(sys.argv)
   ex = Example()
   sys.exit(app.exec_())

if __name__ == '__main__':
   main()

请参阅应用程序屏幕截图。问题是尝试动态重置窗口小部件高度的尝试失败。

Answer 1

问题是您将最大大小应用于由于传递了不合适的索引而导致的不正确的小部件。解决方案是将其传递给self.count()-1：

def createHandle( self):
    return SplitterHandle(self.count()-1, self.orientation , self)

无法动态重置QSplitter中的小部件的最大高度

1 个答案: