问题
I'm trying to populate a QTableWidget with the attributes of a file opened elsewhere in the script. I've successfully set the file attributes read in from the file using the following code:
class FileHeader(object):
fileheader_fields=(
"filetype","fileversion","numframes",
"framerate","resolution","numbeams",
"samplerate","samplesperchannel","receivergain",
"windowstart","winlengthsindex","reverse",
"serialnumber","date","idstring","ID1","ID2",
"ID3","ID4","framestart","frameend","timelapse",
"recordInterval","radioseconds","frameinterval","userassigned")
fileheader_formats=(
'S3','B','i4','i4','i4','i4','f','i4','i4','i4',
'i4','i4','i4','S32','S256','i4','i4','i4','i4',
'i4','i4','i4','i4','i4','i4','S136')
IMAGE_HEADER_BYTES = 256
IMAGES_DATA_BYTES = 49152
def __init__(self,filename=''):
self.filename = filename
if filename:
self.setFile(filename)
else:
# initialize our attributes to None
for field in self.fileheader_fields:
setattr(self,field,None)
def setFile(self, f):
self.infile=open(f, 'rb')
dtype=dict(names=self.fileheader_fields, formats=self.fileheader_formats)
self.fileheader=np.fromfile(self.infile, dtype=dtype, count=1)
self.fileheader_length=self.infile.tell()
for field in self.fileheader_fields:
setattr(self,field,self.fileheader[field])
I've used this code to populate the table but I keep getting a "FileHeader has no attribute fileheader" error.
from fileheader import FileHeader, Frame
from echogram import QEchogram
from PyQt4.QtGui import *
from PyQt4.QtCore import *
import os, sys
class MainWindow(QWidget):
def __init__(self, parent=None):
self.fileheader_fields=FileHeader.fileheader_fields
self.fileheader_values=FileHeader.fileheader[field]
self.fileheader={field: "value of" + field
for field in self.fileheader_fields}
super(MainWindow, self).__init__(parent)
self.fileheader_table=QTableWidget()
layout=QVBoxLayout()
layout.addWidget(self.fileheader_table)
self.setLayout(layout)
self.populate
def populate(self):
self.fileheader_table.setRowCount(len(self.fileheader_fields))
self.fileheader_table.sestColumnCount(2)
self.fileheader_table.setHorizontalHeaderLabels(['name','value'])
for i,field in enumerate(self.fileheader_fields):
name=QTableWidgetItem(field)
value=QTableWidgetItem(self.fileheader[field])
self.fileheader_table.setItem(i,0,name)
self.fileheader_table.setItem(i,1,value)
if __name__=="__main__":
app=QApplication(sys.argv)
filename=str(QFileDialog.getOpenFileName(None,"open file","C:/vprice/DIDSON/DIDSON Data","*.ddf"))
wnd=MainWindow()
wnd.resize(640,480)
wnd.show()
#echoGram=QEchogram()
#echoGram.initFromFile(filename)
#fileName="test.png"
#echoGram.processEchogram()
#dataH=echoGram.data
#print "Horizontal data", dataH
Bear with me-- I just started with all of the Python stuff about a month ago...
回答1:
See populate method. Also there is some examples in documentation
#!/usr/bin/env python
# -*- coding: utf-8 -*-
import sys
from PyQt4 import QtCore, QtGui
class MainWindow(QtGui.QWidget):
def __init__(self, parent=None):
self.fileheader_fields=(
"filetype","fileversion","numframes",
"framerate","resolution","numbeams",
"samplerate","samplesperchannel","receivergain",
"windowstart","winlengthsindex","reverse",
"serialnumber","date","idstring","ID1","ID2",
"ID3","ID4","framestart","frameend","timelapse",
"recordInterval","radioseconds","frameinterval","userassigned"
)
# just for test
self.fileheader = {field: 'value of ' + field
for field in self.fileheader_fields}
super(MainWindow, self).__init__(parent)
self.table_widget = QtGui.QTableWidget()
layout = QtGui.QVBoxLayout()
layout.addWidget(self.table_widget)
self.setLayout(layout)
self.populate()
def populate(self):
self.table_widget.setRowCount(len(self.fileheader_fields))
self.table_widget.setColumnCount(2)
self.table_widget.setHorizontalHeaderLabels(['name', 'value'])
for i, field in enumerate(self.fileheader_fields):
name = QtGui.QTableWidgetItem(field)
value = QtGui.QTableWidgetItem(self.fileheader[field])
self.table_widget.setItem(i, 0, name)
self.table_widget.setItem(i, 1, value)
if __name__ == "__main__":
app = QtGui.QApplication(sys.argv)
wnd = MainWindow()
wnd.resize(640, 480)
wnd.show()
sys.exit(app.exec_())
UPD
Code for your concrete case:
from fileheader import FileHeader, Frame
from echogram import QEchogram
from PyQt4.QtGui import *
from PyQt4.QtCore import *
import os, sys
class MainWindow(QWidget):
def __init__(self, filename, parent=None):
super(MainWindow, self).__init__(parent)
# here we are loading file
# now self.fileheader contains attributes
self.fileheader = FileHeader(filename)
self.fileheader_table = QTableWidget()
layout = QVBoxLayout()
layout.addWidget(self.fileheader_table)
self.setLayout(layout)
self.populate()
def populate(self):
self.fileheader_table.setRowCount(len(self.fileheader.fileheader_fields))
self.fileheader_table.sestColumnCount(2)
self.fileheader_table.setHorizontalHeaderLabels(['name','value'])
for i,field in enumerate(self.fileheader.fileheader_fields):
name=QTableWidgetItem(field)
value=QTableWidgetItem(getattr(self.fileheader, field))
self.fileheader_table.setItem(i,0,name)
self.fileheader_table.setItem(i,1,value)
if __name__=="__main__":
app=QApplication(sys.argv)
filename=str(QFileDialog.getOpenFileName(None,"open file","C:/vprice/DIDSON/DIDSON Data","*.ddf"))
wnd=MainWindow(filename)
wnd.resize(640,480)
wnd.show()
#echoGram=QEchogram()
#echoGram.initFromFile(filename)
#fileName="test.png"
#echoGram.processEchogram()
#dataH=echoGram.data
#print "Horizontal data", dataH
回答2:
ok u have to add a QTableWidget to your custom QtGui.QMainWindow i would create i whith 0 line and the right amount of collumn,like this:
self.tableArea=QtGui.QTableWidget(0,self.fileheader_length,self)
self.setHorizontalHeaderLabels(['nameOne','nameTwo'])#will name your top header
self.verticalHeader().setVisible(False)#will hide your left header if you don't need them
and add your line one by one self.tableArea.insertRow(row)#it will add a line at the row position
after that u have to create a QTableWidgetItem for each cell
itemTo=QtGui.QTableWidgetItem('text')#replace text by your value
and place your item in the cell you want
self.tableArea.setItem(row, column, itemTo)
来源：https://stackoverflow.com/questions/11457839/populating-a-table-in-pyqt-with-file-attributes