PySide/PyQt truncate text in QLabel based on minimumSize

elidedbutton.py

# http://stackoverflow.com/questions/11446478/pyside-pyqt-truncate-text-in-qlabel-based-on-minimumsize/11764662#11764662

from PyQt4.QtCore import Qt
from PyQt4.QtGui import QApplication,\
    QLabel,\
    QFontMetrics,\
    QPainter

from PyQt4 import QtGui, QtCore


class ElideButton(QtGui.QPushButton):

    def __init__(self, parent=None):

        super(ElideButton, self).__init__(parent)
        font = self.font()
        font.setPointSize(9)
        self.setFont(font)

    def paintEvent(self, event):
        painter = QtGui.QStylePainter(self)

        metrics = QtGui.QFontMetrics(self.font())
        elided = metrics.elidedText(self.text(), Qt.ElideRight, self.width())

        option = QtGui.QStyleOptionButton()
        self.initStyleOption(option)
        option.text = ''
        painter.drawControl(QtGui.QStyle.CE_PushButton, option)
        painter.drawText(self.rect(), Qt.AlignCenter, elided)

        # option.text = elided
        # painter.drawControl(QtGui.QStyle.CE_PushButton,option)

if (__name__ == '__main__'):
    app = None
    if (not QApplication.instance()):
        app = QApplication([])

    button = ElideButton()
    button.setText(
        u'This is a really, long and poorly formatted runon sentence used to illustrate a point')
    button.setWindowFlags(Qt.Dialog)
    button.show()

    app.exec_()