class BlockBox(QFrame):
"""Provide the equivalent of a Tk LabelFrame: a group box that has a
definite frame around it.
"""
def __init__(self, parent, text, font, config):
if config.get('frames', True):
QFrame.__init__(self,
parent,
frameShape=QFrame.Panel,
frameShadow=QFrame.Raised,
lineWidth=2)
else:
QFrame.__init__(self, parent, frameShape=QFrame.NoFrame)
self._label = None
if text:
self._label = QLabel(' ' + text + ' ',
parent,
autoFillBackground=True,
font=font)
self._label.resize(self._label.sizeHint())
self._label.show()
self._onlyfields = []
self.setups = config.get('setups', None)
def moveEvent(self, event):
self._repos()
return QFrame.moveEvent(self, event)
def resizeEvent(self, event):
self._repos()
return QFrame.resizeEvent(self, event)
def _repos(self):
if self._label:
mps = self.pos()
msz = self.size()
lsz = self._label.size()
self._label.move(mps.x() + 0.5 * (msz.width() - lsz.width()),
mps.y() - 0.5 * lsz.height())
def enableDisplay(self, layout, isvis):
QFrame.setVisible(self, isvis)
if self._label:
self._label.setVisible(isvis)
if not isvis:
layout.removeWidget(self)
else:
layout.insertWidget(1, self)
self.updateGeometry()
class PictureDisplay(NicosWidget, QWidget):
"""A display widget to show a picture."""
designer_description = 'Widget to display a picture file'
filepath = PropDef('filepath', str, '', 'Path to the picture that should '
'be displayed')
name = PropDef('name', str, '', 'Name (caption) to be displayed above '
'the picture')
refresh = PropDef('refresh', int, 0, 'Interval to check for updates '
'in seconds')
height = PropDef('height', int, 0)
width = PropDef('width', int, 0)
def __init__(self, parent=None, designMode=False, **kwds):
QWidget.__init__(self, parent, **kwds)
NicosWidget.__init__(self)
self._last_mtime = None
self.namelabel = QLabel(self)
self.namelabel.setAlignment(Qt.AlignHCenter)
self.piclabel = QLabel(self)
self.piclabel.setScaledContents(True)
layout = QVBoxLayout()
layout.setContentsMargins(0, 0, 0, 0)
layout.addWidget(self.piclabel, 1)
self.setLayout(layout)
def registerKeys(self):
pass
def setPicture(self):
size = QSize(self.props['width'] * self._scale,
self.props['height'] * self._scale)
if isfile(self._filePath):
pixmap = QPixmap(self._filePath)
else:
pixmap = QPixmap(size)
pixmap.fill()
if size.isEmpty():
self.piclabel.setPixmap(pixmap)
else:
self.piclabel.setPixmap(pixmap.scaled(size))
self.piclabel.resize(self.piclabel.sizeHint())
def updatePicture(self):
if not isfile(self._filePath):
return
# on first iteration self._last_mtime is None -> always setPicture()
mtime = getmtime(self._filePath)
if self._last_mtime != mtime:
self._last_mtime = mtime
self.setPicture()
def propertyUpdated(self, pname, value):
NicosWidget.propertyUpdated(self, pname, value)
if pname == 'filepath':
self._filePath = findResource(value)
self.setPicture()
elif pname == 'name':
layout = QVBoxLayout()
if value:
layout.addWidget(self.namelabel)
layout.addSpacing(5)
layout.addWidget(self.piclabel, 1)
sip.delete(self.layout())
self.setLayout(layout)
self.namelabel.setText(value)
elif pname in ('width', 'height'):
self.setPicture()
elif pname == 'refresh':
if value:
self._refreshTimer = QTimer()
self._refreshTimer.setInterval(value * 1000)
self._refreshTimer.timeout.connect(self.updatePicture)
self._refreshTimer.start()
def sizeHint(self):
if self.layout() is None:
return QSize(24, 24)
return QLabel.sizeHint(self)