def sizeHint(self, option, index):
'''Return preferred size hint.'''
options = QtWidgets.QStyleOptionViewItem(option)
self.initStyleOption(options, index)
data = index.data(role=QtCore.Qt.UserRole)
document = self.getTextDocument(option, data)
return QtCore.QSize(document.idealWidth(), document.size().height())
def paint(self, painter, option, index):
'''Paint delegate using *painter*.'''
options = QtWidgets.QStyleOptionViewItem(option)
self.initStyleOption(options, index)
if options.widget is None:
style = QtWidgets.QApplication.style()
else:
style = options.widget.style()
# Get QTextDocument to use for painting HTML text.
data = index.data(role=QtCore.Qt.UserRole)
document = self.getTextDocument(option, data)
# Ensure no text label rendered.
options.text = ''
# Draw the element with the provided painter with the style
# options specified by option
style.drawControl(QtWidgets.QStyle.CE_ItemViewItem, options, painter)
paint_context = QtGui.QAbstractTextDocumentLayout.PaintContext()
# If item state is selected by mouse over change the highlight color.
if options.state & QtWidgets.QStyle.State_Selected:
paint_context.palette.setColor(
QtGui.QPalette.Text,
options.palette.color(QtGui.QPalette.Active,
QtGui.QPalette.HighlightedText))
# Get paint rectangle in screen coordinates
text_rectangle = style.subElementRect(
QtWidgets.QStyle.SE_ItemViewItemText, options)
# Adjust the rectangle to fix issue occurring on windows.
text_rectangle.adjust(+5, 0, -5, 0)
painter.save()
painter.translate(text_rectangle.topLeft())
painter.setClipRect(
text_rectangle.translated(-text_rectangle.topLeft()))
document.documentLayout().draw(painter, paint_context)
painter.restore()
