class TextWidget(QtGui.QGraphicsWidget):
faded_opacity = .8
padding = 3
bg_color = QtGui.QColor(0,0,0,0)
def __init__(self, timeout_seconds=0):
super(TextWidget, self).__init__()
self.setOpacity(self.faded_opacity)
self.opaciter = OpacityAnimation(self)
self.background = QtGui.QGraphicsRectItem(self)
self.background.setBrush(QtGui.QBrush(self.bg_color))
self.background.setPen(QtGui.QPen(QtGui.QColor(0,0,0,0)))
self.item = TextItem(self)
self._timer = None
self.timeout_seconds = timeout_seconds
def sizeHint(self, which, constraint=None):
#if which == QtCore.Qt.PreferredSize:
if True:
rect = self.item.boundingRect()
size = QtCore.QSizeF(rect.width(), rect.height())
else:
size = super(TextWidget, self).sizeHint(which, constraint)
return size
def setHtml(self, html):
of = self.padding
self.item.setHtml(html)
rect = self.item.boundingRect()
self.background.setRect(rect)
self.updateGeometry()
def show(self):
if not self.opaciter.fadeTo(self.faded_opacity):
self.opaciter.stop()
self.opaciter.fadeTo(self.faded_opacity)
if self.timeout_seconds:
self.timer = QtCore.QTimer(self)
self.timer.timeout.connect(self._hide)
self.timer.setSingleShot(True)
self.timer.start(self.timeout_seconds * 1000)
def hide(self):
if not self.opaciter.fadeTo(0):
self.opaciter.stop()
self.opaciter.fadeTo(0)
