It is related to the previous question. If now a text between the parenthesis (and parenthesis included) were replaced for another text, is it complicated to keep the colour on the replacement (even it doesn't have any limiter or whatever)? I have a toggle function which changes that, and would be great to keep the colour on the replacement.
Here the code example modified to satisfy the new condition (now with double click you can change (toggle) the item text:
import random
from PySide2 import QtCore, QtGui, QtWidgets
words = '''Lorem ipsum dolor sit amet, consectetur adipiscing elit.
Mauris euismod cursus mi sit amet pellentesque.
Proin sed lectus sed augue scelerisque congue eget quis leo.
Curabitur ultrices nisi nisi, placerat gravida urna sagittis et.
Nullam vitae urna tortor. Curabitur a lobortis metus, et laoreet arcu.
Quisque a mi in purus molestie porta non sit amet purus.
Sed porta non purus et suscipit.'''.split()
class HighlightDelegate(QtWidgets.QStyledItemDelegate):
def __init__(self, parent=None):
super(HighlightDelegate, self).__init__(parent)
self.doc = QtGui.QTextDocument(self)
self._regex = QtCore.QRegularExpression()
self._highlight_format = QtGui.QTextCharFormat()
def paint(self, painter, option, index):
painter.save()
options = QtWidgets.QStyleOptionViewItem(option)
self.initStyleOption(options, index)
self.doc.setPlainText(options.text)
self.apply_highlight()
options.text = ""
style = QtWidgets.QApplication.style() if options.widget is None \
else options.widget.style()
style.drawControl(QtWidgets.QStyle.CE_ItemViewItem, options, painter)
ctx = QtGui.QAbstractTextDocumentLayout.PaintContext()
if option.state & QtWidgets.QStyle.State_Selected:
ctx.palette.setColor(QtGui.QPalette.Text, option.palette.color(
QtGui.QPalette.Active, QtGui.QPalette.HighlightedText))
else:
ctx.palette.setColor(QtGui.QPalette.Text, option.palette.color(
QtGui.QPalette.Active, QtGui.QPalette.Text))
textRect = style.subElementRect(
QtWidgets.QStyle.SE_ItemViewItemText, options)
if index.column() != 0:
textRect.adjust(5, 0, 0, 0)
the_constant = 4
margin = (option.rect.height() - options.fontMetrics.height()) // 2
margin = margin - the_constant
textRect.setTop(textRect.top() + margin)
painter.translate(textRect.topLeft())
painter.setClipRect(textRect.translated(-textRect.topLeft()))
self.doc.documentLayout().draw(painter, ctx)
painter.restore()
def apply_highlight(self):
cursor = QtGui.QTextCursor(self.doc)
cursor.beginEditBlock()
highlightCursor = QtGui.QTextCursor(self.doc)
while not highlightCursor.isNull() and not highlightCursor.atEnd():
highlightCursor = self.doc.find(self.regex, highlightCursor)
if not highlightCursor.isNull():
highlightCursor.mergeCharFormat(self.highlightFormat)
cursor.endEditBlock()
@property
def regex(self):
return self._regex
@regex.setter
def regex(self, regex):
if self._regex == regex: return
self._regex = regex
@property
def highlightFormat(self):
return self._highlight_format
@highlightFormat.setter
def highlightFormat(self, fmt):
self._highlight_format = fmt
class MainWindow(QtWidgets.QMainWindow):
def __init__(self, parent=None):
super(MainWindow, self).__init__(parent)
self.table = QtWidgets.QTableView()
self._delegate = HighlightDelegate(self.table)
self._delegate.regex = QtCore.QRegularExpression(r"\(.*?\)")
fmt = QtGui.QTextCharFormat()
fmt.setForeground(QtCore.Qt.green)
fmt.setFontWeight(QtGui.QFont.Bold)
self._delegate.highlightFormat = fmt
self.table.setItemDelegate(self._delegate)
self.table.doubleClicked.connect(self.handleDoubleClickTV)
r = 10
c = 4
self.model = QtGui.QStandardItemModel(r, c)
self.str_items = [["" for i in range(c)] for j in range(r)]
self.idx_items = [[0 for i in range(c)] for j in range(r)]
self.setModel()
self.setCentralWidget(self.table)
def setModel(self):
r = self.model.rowCount()
c = self.model.columnCount()
for i in range(r):
for j in range(c):
random_words = random.sample(words,4)
str_item1 = "{}({}){}".format(*random_words[:-1]) # words 1, 2, 3
str_item2 = "{}{}{}".format(*[random_words[0],random_words[3],random_words[2]]) #words 1,4,3
item = QtGui.QStandardItem(str_item1)
item.setEditable(False)
self.str_items[i][j] = [str_item1, str_item2, item]
self.model.setItem(i, j, item)
self.table.setModel(self.model)
def toggleText(self):
model_index = self.table.selectedIndexes()[0]
row = model_index.row()
col = model_index.column()
index = int(not self.idx_items[row][col])
# toggle the str
new_str_item = self.str_items[row][col][index]
# get item
item = self.str_items[row][col][2]
item.setText(new_str_item)
self.idx_items[row][col] = index
def handleDoubleClickTV(self):
self.toggleText()
if __name__ == '__main__':
import sys
app = QtWidgets.QApplication(sys.argv)
w = MainWindow()
w.show()
sys.exit(app.exec_())
