class BusyWidget(QWidget): # {{{
def __init__(self, parent):
QWidget.__init__(self, parent)
l = QVBoxLayout()
self.setLayout(l)
l.addStretch(10)
self.pi = ProgressIndicator(self, 128)
l.addWidget(self.pi, alignment=Qt.AlignmentFlag.AlignHCenter)
self.dummy = QLabel('<h2>\xa0')
l.addSpacing(10)
l.addWidget(self.dummy, alignment=Qt.AlignmentFlag.AlignHCenter)
l.addStretch(10)
self.text = _('Calculating differences, please wait...')
def paintEvent(self, ev):
br = ev.region().boundingRect()
QWidget.paintEvent(self, ev)
p = QPainter(self)
p.setClipRect(br)
f = p.font()
f.setBold(True)
f.setPointSize(20)
p.setFont(f)
p.setPen(Qt.PenStyle.SolidLine)
r = QRect(0, self.dummy.geometry().top() + 10, self.geometry().width(), 150)
p.drawText(r, Qt.AlignmentFlag.AlignHCenter | Qt.AlignmentFlag.AlignTop | Qt.TextFlag.TextSingleLine, self.text)
p.end()
class BlockingJob(QWidget):
def __init__(self, parent):
QWidget.__init__(self, parent)
l = QVBoxLayout()
self.setLayout(l)
l.addStretch(10)
self.pi = ProgressIndicator(self, 128)
l.addWidget(self.pi, alignment=Qt.AlignmentFlag.AlignHCenter)
self.dummy = QLabel('<h2>\xa0')
l.addSpacing(10)
l.addWidget(self.dummy, alignment=Qt.AlignmentFlag.AlignHCenter)
l.addStretch(10)
self.setVisible(False)
self.text = ''
self.setFocusPolicy(Qt.FocusPolicy.NoFocus)
def start(self):
self.setGeometry(0, 0, self.parent().width(), self.parent().height())
self.setVisible(True)
# Prevent any actions from being triggered by key presses
self.parent().setEnabled(False)
self.raise_()
self.setFocus(Qt.FocusReason.OtherFocusReason)
self.pi.startAnimation()
QApplication.setOverrideCursor(QCursor(Qt.CursorShape.WaitCursor))
def stop(self):
QApplication.restoreOverrideCursor()
self.pi.stopAnimation()
self.setVisible(False)
self.parent().setEnabled(True)
# The following line is needed on OS X, because of this bug:
# https://bugreports.qt-project.org/browse/QTBUG-34371 it causes
# keyboard events to no longer work
self.parent().setFocus(Qt.FocusReason.OtherFocusReason)
def job_done(self, callback, job):
del job.callback
self.stop()
callback(job)
def paintEvent(self, ev):
br = ev.region().boundingRect()
p = QPainter(self)
p.setOpacity(0.2)
p.fillRect(br, QBrush(self.palette().text()))
p.end()
QWidget.paintEvent(self, ev)
p = QPainter(self)
p.setClipRect(br)
f = p.font()
f.setBold(True)
f.setPointSize(20)
p.setFont(f)
p.setPen(Qt.PenStyle.SolidLine)
r = QRect(0,
self.dummy.geometry().top() + 10,
self.geometry().width(), 150)
p.drawText(
r, Qt.AlignmentFlag.AlignHCenter | Qt.AlignmentFlag.AlignTop
| Qt.TextFlag.TextSingleLine, self.text)
p.end()
def set_msg(self, text):
self.text = text
def __call__(self, name, user_text, callback, function, *args, **kwargs):
' Run a job that blocks the GUI providing some feedback to the user '
self.set_msg(user_text)
job = LongJob(name, user_text,
Dispatcher(partial(self.job_done, callback)), function,
*args, **kwargs)
job.start()
self.start()
