所以我需要创建一个应用程序，我找到了一个很好的例子，但我无法更新它，有人可以帮我将此代码升级到 PyQt5 吗？我想要一个解释。由于某些功能不同，我认为不可能这样做。如果不是，我想听听如何或获得升级的代码，以便我可以从中学习。
提前致谢
import sys
from PyQt4 import QtGui, QtCore
class MyFileViewDelegate(QtGui.QStyledItemDelegate ):
def __init__(self, parent=None, *args, **kwargs):
QtGui.QItemDelegate.__init__(self, parent, *args)
self.condition = None
self.isMatch = False
self.brush_active = QtGui.QBrush(QtGui.QColor("#79b9ed"))
self.brush_active_matched = QtGui.QBrush(QtGui.QColor("#58cd1c"))
self.pen = QtGui.QPen(QtGui.QColor("#414141") )
self.pen_matched = QtGui.QPen(QtGui.QColor("#39c819") )
self.pen_active = QtGui.QPen(QtGui.QColor("#eef2fd") )
self.pen_active_matched = QtGui.QPen(QtGui.QColor("#e7fade") )
def paint(self, painter, option, index):
text = index.data(QtCore.Qt.DisplayRole)
self.matchText(text)
painter.save()
######## set background
painter.setPen(QtGui.QPen(QtCore.Qt.NoPen))
if option.state & QtGui.QStyle.State_Selected:
if self.isMatch:
painter.setBrush(self.brush_active_matched)
else:
painter.setBrush(self.brush_active)
painter.drawRect(option.rect)
######## set font color
if option.state & QtGui.QStyle.State_Selected:
if self.isMatch:
painter.setPen(self.pen_active_matched)
else:
painter.setPen(self.pen_active)
else:
if self.isMatch:
painter.setPen(self.pen_matched)
else:
painter.setPen(self.pen)
painter.drawText(option.rect, QtCore.Qt.AlignLeft, text)
painter.restore()
def matchText(self, filename):
# testing condition. In the real case this is much more complicated
if (self.condition != None) and (self.condition != "") and (self.condition in filename):
self.isMatch = True
else:
self.isMatch = False
def setCondition(self, condition):
self.condition = condition
class MainWidget(QtGui.QWidget):
def __init__(self, parent=None, useDelegate = False):
super(MainWidget, self).__init__(parent)
self.setLayout(QtGui.QVBoxLayout())
self.FolderModel = QtGui.QFileSystemModel()
self.FolderModel.setFilter(QtCore.QDir.NoDotAndDotDot | QtCore.QDir.AllDirs)
self.FolderModel.setRootPath("")
self.FolderView = QtGui.QTreeView(parent=self)
self.FolderView.setModel(self.FolderModel)
self.FolderView.setHeaderHidden(True)
self.FolderView.hideColumn(1)
self.FolderView.hideColumn(2)
self.FolderView.hideColumn(3)
self.FolderView.expanded.connect(self.FolderView.scrollTo)
self.FolderView.clicked[QtCore.QModelIndex].connect(self.browserClicked)
self.FileModel = QtGui.QFileSystemModel()
self.FileModel.setFilter(QtCore.QDir.NoDotAndDotDot | QtCore.QDir.Files)
self.FileView = QtGui.QListView(parent=self)
self.FileView.setModel(self.FileModel)
self.FileViewDelegate = None
if useDelegate:
self.FileViewDelegate = MyFileViewDelegate()
self.FileView.setItemDelegate(self.FileViewDelegate)
self.FileView.setSelectionMode( QtGui.QAbstractItemView.ExtendedSelection )
self.LineEdit = QtGui.QLineEdit()
self.LineEdit.textChanged.connect(self.changeCondition)
# Add Widgets to layout
self.layout().addWidget(self.FolderView)
self.layout().addWidget(self.FileView)
self.layout().addWidget(self.LineEdit)
def changeCondition(self, text):
if self.FileViewDelegate:
self.FileViewDelegate.setCondition(text)
def browserClicked(self, index):
# the signal passes the index of the clicked item
# set the FileView's root_index to the clicked index
dir_path = self.FileModel.filePath(index)
root_index = self.FileModel.setRootPath(dir_path)
self.FileView.setRootIndex(root_index)
class App(QtGui.QMainWindow):
def __init__(self, parent=None, useDelegate=False):
super(App, self).__init__(parent)
self.central = MainWidget(parent =self, useDelegate=useDelegate)
self.setCentralWidget(self.central)
if __name__=='__main__':
app = QtGui.QApplication(sys.argv)
thisapp = App(None, True) # set False to view App without custom FileViewDelegate
thisapp.show()
sys.exit(app.exec_())