问题描述
（W10平台）
我想要得到的（我被要求用Gimp产生目标结果）：
我目前得到的是什么
MRE：
new_df = df.loc[(df['Dateddiff'].le(28) &
df['Indicator'].eq('Y')).groupby(df['ID'])
.transform('any')]
print(new_df)
ID Indicator Dateddiff
0 111 N 0
1 111 Y 10
2 111 N 32
7 114 Y 0
8 114 N 28
我要在这里做的是1）更改水平标题中的网格线； 2）在表头和数据行之间放置某种实线。如果有兴趣，请取消注释我的尝试。
我不清楚是否要使用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],[3,5,]
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,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,role )
return QBrush( QColor( 'brown' ) )
elif role == Qt.BackgroundRole:
# this seems to have no effect
result = super().headerData( section,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(20,200,200))
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())
的替代功能是这里的解决方法：我看不到该功能实际上是如何处理网格线的……或者样式表是否应该做到这一点。
在W10机器上工作似乎很重要（即，在Linux / OS中可能会获得更容易理解的结果）。
尝试1的图片：
尝试2的图片：
尝试3的图片：
解决方法
您要样式化的是表 header （一个QHeaderView），而不是表。
因此，您应该将样式表应用于样式表，并使用正确的class::selector:state语法。
table.horizontalHeader().setStyleSheet('''
QHeaderView {
/* set the bottom border of the header,in order to set a single
border you must declare a generic border first or set all other
borders */
border: none;
border-bottom: 2px solid green;
}
QHeaderView::section:horizontal {
/* set the right border (as before,the overall border must be
declared),and a minimum height,otherwise it will default to
the minimum required height based on the contents (font and
decoration sizes) */
border: none;
border-right: 1px solid red;
min-height: 28px;
}
''')
请注意，由于在示例中我已将样式表设置为水平标题，因此可以省略:horizontal选择器（但必须使用::section）。
还要考虑您仍然可以在表格上设置上面的样式表：由于我正确使用了类选择器，因此可以正确应用其语法。问题在于，由于我们需要为整个标头显示边框，因此必须将其应用于没有选择器的类，这显然会导致 both 标头显示底部边框，这是因为在这种情况下，:horizontal无法正常工作（AFAIK）。