(W10 platform)
What I'm trying to get (I was asked to produce a target outcome, with Gimp):
What I currently get:
MRE:
from PyQt5.QtCore import QRect, Qt, QAbstractTableModel
from PyQt5.QtWidgets import QApplication, QMainWindow, QTableView, QWidget, QVBoxLayout, QStyledItemDelegate, \
QPlainTextEdit, QShortcut
import sys, types
from PyQt5.QtGui import QFont, QBrush, QColor
class HistoryTableModel( QAbstractTableModel ):
def __init__( self ):
super(HistoryTableModel, self).__init__()
data = [
[4, 9, 2],
[1, 0, 0],
[3, 5, 0],
]
self._data = data
def data(self, index, role):
if role == Qt.DisplayRole:
return self._data[index.row()][index.column()]
def rowCount(self, index):
return len(self._data)
def columnCount(self, index):
return 2
def flags(self, index):
return Qt.ItemIsEnabled | Qt.ItemIsSelectable | Qt.ItemIsEditable
def setData(self, index, value, role ):
if role == Qt.EditRole:
self._data[ index.row() ][ index.column() ] = value
return True
def headerData(self, section, orientation, role):
if orientation == Qt.Horizontal:
print( f'headerData, horiz: section {section}, role {role}')
if role == Qt.DisplayRole:
return ( 'Date', 'Entry' )[section]
elif role == Qt.ForegroundRole:
# this has the desired effect: colours the font
result = super().headerData( section, orientation, role )
return QBrush( QColor( 'brown' ) )
elif role == Qt.BackgroundRole:
# this seems to have no effect
result = super().headerData( section, orientation, role )
return QBrush( QColor( 'yellow' ) )
class Ui_MainWindow(object):
def setupUi(self, MainWindow):
MainWindow.resize(600, 700 )
self.centralwidget = QWidget(MainWindow)
self.verticalLayoutWidget = QWidget(self.centralwidget)
self.verticalLayoutWidget.setGeometry( QRect(20, 20, 300, 300))
self.verticalLayout = QVBoxLayout(self.verticalLayoutWidget)
self.comps = []
self.table_view = QTableView(self.verticalLayoutWidget)
# this has an effect on the table data rows, but it's the header I want to format...
self.table_view.setStyleSheet( 'background: palegoldenrod; gridline-color: black;' )
# # ATTEMPT 1
# # this has an inexplicable effect: most of the window outside the table is given a white background;
# # gridlines are unchanged
# self.table_view.setStyleSheet( """QTableHeader.section.horizontal {
# color: red;
# background: blue;
# gridline-color: green;
# }""" )
# # ATTEMPT 2
# # this puts a small corner of blue in the top right corner of the window;
# # gridlines are unchanged
# self.table_view.horizontalHeader().setStyleSheet( """
# color: red;
# background: blue;
# gridline-color: green;
# """ )
# # ATTEMPT 3
# # this puts a small line of red in the top right corner of the window;
# self.table_view.horizontalHeader().setStyleSheet( """
# border-bottom:3px solid red;
# """ )
self.comps.append( self.table_view )
self.table_view.setGeometry(QRect(20, 20, 200, 200))
self.verticalLayout.addWidget(self.table_view)
self.table_view.setModel( HistoryTableModel() )
MainWindow.setCentralWidget(self.centralwidget)
class MainWindow(QMainWindow):
def __init__(self):
super(MainWindow, self).__init__()
self.ui = Ui_MainWindow()
self.ui.setupUi(self)
app = QApplication(sys.argv)
application = MainWindow()
application.show()
sys.exit(app.exec())
What I'm trying to do here is 1) change the grid lines in the horizontal header; 2) put a solid line of some kind between the header and the data rows of the table. Uncomment my attempts if interested.
I'm not clear whether overriding functionality to do with ItemDataRole is the way to go here: I can't see any way that this functionality actually takes care of grid lines... Or whether style sheets should do this.
It seems that it may be significant that I'm working on a W10 machine (i.e. more understandable results may possibly be obtained in Linux/OS).
Image of attempt1:
Image of attempt2:
Image of attempt3:
