def __textLayout(self):
fm = QFontMetrics(self.font())
text = six.text_type(self.defaultAction().iconText())
words = deque(text.split())
lines = []
curr_line = ""
curr_line_word_count = 0
option = QStyleOptionToolButton()
option.initFrom(self)
margin = self.style().pixelMetric(QStyle.PM_ButtonMargin, option, self)
width = self.width() - 2 * margin
while words:
w = words.popleft()
if curr_line_word_count:
line_extended = " ".join([curr_line, w])
else:
line_extended = w
line_w = fm.boundingRect(line_extended).width()
if line_w >= width:
if curr_line_word_count == 0 or len(lines) == 1:
# A single word that is too long must be elided.
# Also if the text overflows 2 lines
# Warning: hardcoded max lines
curr_line = fm.elidedText(line_extended, Qt.ElideRight,
width)
curr_line = six.text_type(curr_line)
else:
# Put the word back
words.appendleft(w)
lines.append(curr_line)
curr_line = ""
curr_line_word_count = 0
if len(lines) == 2:
break
else:
curr_line = line_extended
curr_line_word_count += 1
if curr_line:
lines.append(curr_line)
text = "\n".join(lines)
self.__text = text
