下面的示例显示了“我的列名称”标题名称如何使用以下内容从TableView
定义范围内居中:
self.horizontalHeader().setDefaultAlignment(QtCore.Qt.AlignHCenter | QtCore.Qt.AlignVCenter)
虽然这有效,但我想知道如何使用Header
方法从QAbstractTableModel内部控制headerData()
。
headerData()
返回标题名称:
if orientation==QtCore.Qt.Horizontal:
return QtCore.QVariant('My Column Name')
如果是角色,它还会返回一个虚拟的QtCore.QVariant()
!= QtCore.Qt.DisplayRole
if role!=QtCore.Qt.DisplayRole:
return QtCore.QVariant()
还有哪些其他角色和值可用于模型的headerData()
?
import sys, os
from PyQt4 import QtCore, QtGui
app=QtGui.QApplication(sys.argv)
class TableModel(QtCore.QAbstractTableModel):
def __init__(self):
QtCore.QAbstractTableModel.__init__(self)
self.items=['One','Two','Three','Four','Five','Six','Seven']
def rowCount(self, parent=QtCore.QModelIndex()):
return len(self.items)
def columnCount(self, index=QtCore.QModelIndex()):
return 1
def data(self, index, role):
if not index.isValid() or not (0<=index.row()<len(self.items)):
return QtCore.QVariant()
item=str(self.items[index.row()])
if role==QtCore.Qt.UserRole:
return item
if role==QtCore.Qt.DisplayRole:
return item
if role==QtCore.Qt.TextColorRole:
return QtCore.QVariant(QtGui.QColor(QtCore.Qt.white))
if role == QtCore.Qt.BackgroundRole:
if index.row()%2:
return QtCore.QVariant(QtGui.QColor("#242424"))
else:
return QtCore.QVariant(QtGui.QColor(QtCore.Qt.black))
def headerData(self, column, orientation, role=QtCore.Qt.DisplayRole):
if role!=QtCore.Qt.DisplayRole:
return QtCore.QVariant()
if orientation==QtCore.Qt.Horizontal:
return QtCore.QVariant('My Column Name')
class TableView(QtGui.QTableView):
def __init__(self, parent=None):
super(TableView, self).__init__(parent)
self.setBackgroundRole(QtGui.QPalette.Base)
p=self.palette()
p.setColor(self.backgroundRole(), QtGui.QColor((QtCore.Qt.black)))
self.setPalette(p)
self.horizontalHeader().setResizeMode(QtGui.QHeaderView.Stretch)
self.horizontalHeader().setDefaultAlignment(QtCore.Qt.AlignHCenter | QtCore.Qt.AlignVCenter)
font=QtGui.QFont()
font.setPointSize(9)
self.horizontalHeader().setFont(font)
myModel=TableModel()
self.setModel(myModel)
view=TableView()
view.show()
sys.exit(app.exec_())
答案 0 :(得分:4)
表格视图的标题由QHeaderView
提供。
The doc描述了它支持的数据角色:
QHeaderView尊重以下项目数据角色:TextAlignmentRole, DisplayRole,FontRole,DecorationRole,ForegroundRole和 BackgroundRole。
以下是headerData
实现的示例(代码在C ++中):
QVariant
Model::headerData(int section, Qt::Orientation orientation, int role) const
{
...
if (role == Qt::DisplayRole)
{
return QString("Header #%1").arg(section);
}
if (role == Qt::FontRole)
{
QFont serifFont("Times", 10, QFont::Bold, true);
return serifFont;
}
if (role == Qt::TextAlignmentRole)
{
return Qt::AlignRight;
}
if (role == Qt::BackgroundRole)
{
return QBrush(Qt::blue);
}
if (role == Qt::ForegroundRole)
{
return QBrush(Qt::red);
}
...
}
还必须注意,BackgroundRole
最有可能被窗口小部件选项板和常规应用程序样式覆盖。您可以查看this answer。