我有一个包含以下列的QTableWidget:
Username Password URL Status
+----------+-----------+---------+---------+
| user1 | passwd1 | url.com | OK |
| user2 | passwd2 | url.com | FAIL |
+----------+-----------+---------+---------+
在我的应用程序中的工作人员QThread
中,会发出一个信号,其中包含表格中显示的数据。但是,此数据需要稍后更新(特别是“状态”列)。
我希望能够更新,例如,仅更新第二行。现在,到目前为止,我将循环遍历表中的所有行,然后尝试将某个唯一字段(例如用户名)与软件发送的数据进行匹配。因此,如果第2行的状态需要从“FAIL”更新为“RETRY”,则发送到GUI线程的信号将包含用户名和状态字符串。然后,我将比较两个字符串(信号中的一个,即QThread与当前表中的那些字符串),如果匹配,则更新表。希望这是有道理的。
事情是,我想知道这是否是一个可行的解决方案?还有别的吗?我考虑在QTableWidget中添加另一个“隐藏”列,它将包含由每个QThread生成的随机字符串,然后将更新。但原则仍然是一样的。
有人可以给我任何指示吗?
编辑:为每个请求添加代码:
这是我的GUI线程代码(搜索和更新部分):
def writeToMainTable(self, param):
username = param['username']
statusText = param['statusText']
for i in xrange(self.mainTable.currentRowCount()):
if username == self.mainTable.item(i, 0).text():
found = True
activerow = i
if found:
if statusText is not None: self.mainTable.setItem(activerow, 3, QTableWidgetItem(statusText))
虽然QThread有这样的东西:
def sendToTable(self, param): #param is a dict here as well
self.mainsig.emit(param)
答案 0 :(得分:0)
我不确定你想要什么。我假设你想让Qt为你做循环?如果是这样,这是一种方式。希望这会有所帮助。
import sys
from PySide.QtCore import *
from PySide.QtGui import *
class Main(QWidget):
def __init__(self):
super(Main, self).__init__()
self.table = Table(self)
self.change = QPushButton('Change')
layout = QHBoxLayout(self)
layout.addWidget(self.table)
layout.addWidget(self.change)
self.change.clicked.connect(self.table.updateCell)
class Table(QTableWidget):
def __init__(self, parent=None):
super(Table, self).__init__(2, 2, parent)
self.setItem(1, 0, QTableWidgetItem('test'))
self.setItem(1, 1, QTableWidgetItem('False'))
def updateCell(self):
item, = self.findItems('test', Qt.MatchExactly)
new = repr(not eval(self.item(item.row(), 1).text()))
self.item(row, 1).setText(new)
app = QApplication([])
main = Main()
main.show()
app.exec_()
答案 1 :(得分:0)
您似乎使用其他QThread
来更新每一行,因此您可以使用QSignalMapper
,如下所示:
#!/usr/bin/env python
#-*- coding:utf-8 -*-
import time, random
from PyQt4 import QtGui, QtCore
class MyThread(QtCore.QThread):
statusChanged = QtCore.pyqtSignal()
def __init__(self, parent=None):
super(MyThread, self).__init__(parent)
self.status = None
def run(self):
time.sleep(3)
self.status = True if not self.status else False
self.statusChanged.emit()
class MyWindow(QtGui.QWidget):
def __init__(self, parent=None):
super(MyWindow, self).__init__(parent)
self.tableWidget = QtGui.QTableWidget(self)
self.tableWidget.setRowCount(2)
self.tableWidget.setColumnCount(4)
self.tableWidget.horizontalHeader().setResizeMode(QtGui.QHeaderView.Stretch)
self.signalMapper = QtCore.QSignalMapper(self)
self.signalMapper.mapped.connect(self.on_signalMapper_mapped)
for row in range(2):
status = random.getrandbits(1)
state = "Ok" if status else "Failed"
thread = MyThread(self)
thread.status = status
self.signalMapper.setMapping(thread, row)
thread.statusChanged.connect(self.signalMapper.map)
thread.start()
values = ["user", "passwd", "url.com", state]
for column, value in enumerate(values):
item = QtGui.QTableWidgetItem()
item.setText("{0}: {1}".format(row, value))
self.tableWidget.setItem(row, column, item)
self.gridLayout = QtGui.QGridLayout(self)
self.gridLayout.addWidget(self.tableWidget, 0, 0)
@QtCore.pyqtSlot(int)
def on_signalMapper_mapped(self, number):
state = "Ok" if self.signalMapper.mapping(number).status else "Failed"
item = self.tableWidget.item(number, 3)
item.setText("{0}: {1}".format(number, state))
if __name__ == "__main__":
import sys
app = QtGui.QApplication(sys.argv)
app.setApplicationName('MyWindow')
main = MyWindow()
main.resize(666, 111)
main.show()
sys.exit(app.exec_())