我正在尝试对包含进度条的列进行排序。我希望列按进度条值排序。任何帮助都感激不尽
from PyQt4.QtCore import *
from PyQt4.QtGui import *
import sys
class Example(QMainWindow):
def __init__(self):
super(Example, self).__init__()
self.initUI()
def initUI(self):
self.tablew = Table(self)
self.setCentralWidget(self.tablew)
self.setGeometry(300, 300, 300, 200)
self.show()
class ProgressBar(QProgressBar):
def __init__(self, value, parent=None):
QProgressBar.__init__(self)
self.setMinimum(1)
self.setMaximum(5.0)
self.setValue(value)
self.setFormat('{0:.5f}'.format(value))
style = ''' QProgressBar{max-height: 15px;text-align: center;}'''
self.setStyleSheet(style)
class Table(QTableWidget):
def __init__(self, parent=None):
QTableWidget.__init__(self)
self.setColumnCount(2)
self.setHorizontalHeaderLabels(['id', 'status'])
header = self.horizontalHeader()
header.setResizeMode(QHeaderView.Stretch)
self.setSortingEnabled(True)
self.loadData()
#
def loadData(self):
#
tableData = [[89, 4.8], [99, 3.9], [101, 2.6], [105, 4]]
#
self.setRowCount(len(tableData))
#
for index, value in enumerate(tableData):
# column1
item = QTableWidgetItem()
item.setData(Qt.DisplayRole, value[0])
self.setItem(index, 0, item)
# column2
self.setCellWidget(index, 1, ProgressBar(value[1]))
#
def main():
app = QApplication(sys.argv)
ex = Example()
sys.exit(app.exec_())
if __name__ == '__main__':
main()
更新 根据@ekhumoro的回答 下面是完整的代码,但不知何故,它排序正确。 手动排序列后附加的屏幕截图
from PyQt4.QtCore import *
from PyQt4.QtGui import *
import sys
class Example(QMainWindow):
def __init__(self):
super(Example, self).__init__()
self.initUI()
def initUI(self):
self.tablew = Table(self)
self.setCentralWidget(self.tablew)
self.setGeometry(300, 300, 300, 200)
self.show()
class ProgressBar(QProgressBar):
def __init__(self, value, parent=None):
QProgressBar.__init__(self)
self.setMinimum(1)
self.setMaximum(5.0)
self.setValue(value)
self.setFormat('{0:.5f}'.format(value))
style = ''' QProgressBar{max-height: 15px;text-align: center;}'''
self.setStyleSheet(style)
class Table(QTableWidget):
def __init__(self, parent=None):
QTableWidget.__init__(self)
self.setColumnCount(2)
self.setHorizontalHeaderLabels(['id', 'status'])
header = self.horizontalHeader()
header.setResizeMode(QHeaderView.Stretch)
self.setSortingEnabled(True)
self.loadData()
#
def loadData(self):
#
tableData = [[89, 4.8], [99, 3.9], [101, 2.6], [105, 4]]
#
self.setRowCount(len(tableData))
#
for index, value in enumerate(tableData):
# column1
item = QTableWidgetItem()
item.setData(Qt.DisplayRole, value[0])
self.setItem(index, 0, item)
# column2
item = ProgressWidgetItem()
self.setItem(index, 1, item)
item.updateValue(value[1])
progress = ProgressBar(value[1])
self.setCellWidget(index, 1, progress)
progress.valueChanged.connect(item.updateValue)
self.sortItems(1, Qt.DescendingOrder)
class ProgressWidgetItem(QTableWidgetItem):
def __lt__(self, other):
return self.data(Qt.UserRole) < other.data(Qt.UserRole)
def updateValue(self, value):
self.setData(Qt.UserRole, value)
def main():
app = QApplication(sys.argv)
ex = Example()
sys.exit(app.exec_())
if __name__ == '__main__':
main()
答案 0 :(得分:3)
您可以继承QTableWidgetItem
并重新实现__lt__
,然后将空白项添加到进度条列:
# column2
item = ProgressWidgetItem()
self.setItem(index, 1, item)
item.updateValue(value[1])
progress = ProgressBar(value[1])
self.setCellWidget(index, 1, progress)
progress.valueChanged.connect(item.updateValue)
self.sortItems(1, Qt.DescendingOrder)
class ProgressWidgetItem(QTableWidgetItem):
def __lt__(self, other):
# python 3
# return self.data(Qt.UserRole) < other.data(Qt.UserRole)
# python 2
return (self.data(Qt.UserRole).toPyObject() <
other.data(Qt.UserRole).toPyObject())
def updateValue(self, value):
self.setData(Qt.UserRole, value)
<强> PS 强>:
对于Python 2和Python 3,__lt__
的实现是不同的,因为默认情况下,后者将返回普通的Python类型而不是QVariant
和QString
。可以直接测试两个QVariant
对象是否相等,而不是一个是否小于另一个(即使它们包含相同类型的值)。
在Python 2中,您可以通过在应用程序中的第一个PyQt导入之前放置以下代码来消除QVariant
和QString
:
import sip
sip.setapi('QString', 2)
sip.setapi('QVariant', 2)
这将使行为与Python 3相同,这意味着您永远不必使用丑陋的代码,如variant.toPyObject()
或str(qtstring)
。