def new_viewer(self, name=None, settings=None):
if not name:
self.count += 1
name = 'v%d' % self.count
if settings is None:
settings = self.preferences.createCategory('ipg_viewer')
settings.load(onError='silent')
settings.addDefaults(autocut_method='zscale')
# instantiate bindings loaded with users preferences
bclass = IPyNbImageView.bindingsClass
bindprefs = self.preferences.createCategory('bindings')
bd = bclass(self.logger, settings=bindprefs)
# create a ginga basic object for user interaction
fi = IPyNbImageView(self.logger,
settings=settings,
render='widget',
bindings=bd)
fi.enable_draw(False)
fi.set_callback('drag-drop', self.drop_file, name)
fi.set_bg(0.2, 0.2, 0.2)
fi.ui_setActive(True)
# expose the fits viewer to the shared namespace
self.kapp.namespace[name] = fi
# enable various interactive operations
bd = fi.get_bindings()
bd.enable_all(True)
# get the ginga Qt widget
w = fi.get_widget()
w.resize(512, 512)
# pack it into a qt window with a couple other buttons
vw = QtGui.QWidget()
vbox = QtGui.QVBoxLayout()
vbox.setContentsMargins(QtCore.QMargins(2, 2, 2, 2))
vbox.setSpacing(1)
vbox.addWidget(w, stretch=1)
# for simple WCS readout
self.readout = Readout(-1, 16)
readout = self.readout.get_widget()
fi.set_callback('none-move', self.motion, self.readout)
vbox.addWidget(readout, stretch=0, alignment=QtCore.Qt.AlignCenter)
hbox = QtGui.QHBoxLayout()
hbox.setContentsMargins(QtCore.QMargins(4, 2, 4, 2))
wopen = QtGui.QPushButton("Open File")
def _open_file(name):
return lambda: self.open_file(name)
wopen.clicked.connect(_open_file(name))
wquit = QtGui.QPushButton("Close")
def _close(name):
return lambda: self.close_viewer(name)
wquit.clicked.connect(_close(name))
hbox.addStretch(1)
for w in (wopen, wquit):
hbox.addWidget(w, stretch=0)
hw = QtGui.QWidget()
hw.setLayout(hbox)
vbox.addWidget(hw, stretch=0)
vw.setLayout(vbox)
vw.resize(524, 540)
vw.setWindowTitle("Ginga: %s" % name)
self.viewers[name] = vw
vw.showNormal()
vw.raise_()
vw.activateWindow()
