def _get_monitor_size(monitor_index):
"""Utility function to automatically detect the SLM panel size
:param monitor_index: int. Monitor number
:return: tuple of two integers, width and height in pixels
"""
app = get_qt_app()
desktop = app.desktop()
slm_screen = desktop.screen(monitor_index)
return [slm_screen.width(), slm_screen.height()]
def set_image(self, phase, slm_monitor=None):
"""Sets an array on the QLabel.Pixmap
:param phase: np.array from 0 to 2 pi
:param slm_monitor: int. Optional. If given, it will move the SLM widget to the specified monitor
:return:
"""
phase = self.LUT(phase)
img = phase.ravel()
img_slm = np.dstack((img, img, img, img)).astype(np.uint8)
self._QImage = QtGui.QImage(img_slm, phase.shape[1], phase.shape[0],
QtGui.QImage.Format_RGB32)
self._QLabel.setPixmap(QtGui.QPixmap(self._QImage))
if slm_monitor is not None:
app = get_qt_app()
desktop = app.desktop()
slm_screen = desktop.screen(slm_monitor)
assert isinstance(slm_monitor, int)
assert desktop.screenCount() > slm_monitor >= 0
self.move(slm_screen.x(), slm_screen.y())
#i = self.axis_names.index(axis)
#if relative:
# self._position[i] += position
#else:
# self._position[i] = position
# print "stage now at", self._position
#def move_rel(self, position, axis=None):
# self.move(position, relative=True)
def get_position(self, axis=None):
return self.get_axis_param(lambda axis: self._position[self.axis_names.index(axis)], axis)
position = property(get_position)
if __name__ == '__main__':
import sys
from nplab.utils.gui import get_qt_app
stage = DummyStage()
print stage.move(2e-6, axis=('x1', 'x2'))
print stage.get_position()
print stage.get_position('x1')
print stage.get_position(['x1', 'y1'])
app = get_qt_app()
ui = stage.get_qt_ui()
ui.show()
sys.exit(app.exec_())
def show_gui(self, blocking=None, block=None, force_new_window=False):
"""Display a GUI window for the class.
You may override this method to display a window to control the
object. However, it's better (and less work) to provide a
method `get_qt_ui()`. This shoudl return a QWidget subclass that
is the GUI for the object. This method will take care of ensuring
there's a Qt application object and displaying the GUI.
If you are using traitsui, then edit_traits/configure_traits
methods exist, and this method will simply pop up a traits window
for the object.
If you use blocking=False, it will return immediately - this allows
you to continue using the console, assuming there's already a Qt
application running (usually the case if you're running from
Spyder). NB you may want to retain the return value if using this
mode, as otherwise the GUI may be garbage-collected and disappear.
For compatibility, this function accepts either ``block`` or
``blocking`` as a keyword argument - if either is not None it will
use that value, otherwise it defaults to ``True``.
In the future, blocking=False may spawn a Qt application object in
a background thread - but that's not currently done so we rely on
a Qt application running already (e.g. via the "input hook").
When using Qt, we default to only creating one UI, and return a
handle to it each time this is called. If ``force_new_window`` is
set to `True`, a new widget will be created regardless. This may
cause issues if the retained reference to the GUI in the object is
the only one existing - the previous window may disappear.
"""
if blocking is None and block is not None:
blocking = block # Allow the use of either argument name
if blocking is None:
blocking = True # We default to True.
if hasattr(self, 'get_qt_ui'):
# NB this dynamic import is important to avoid saddling all of
# nplab with dependencies on Qt.
from nplab.utils.gui import QtCore, QtGui, QtWidgets, get_qt_app
app = get_qt_app()
if force_new_window or not isinstance(self.__gui_instance,
QtWidgets.QWidget):
# create the widget if it doesn't exist already, or if we've been
# told to make a new one
self.__gui_instance = self.get_qt_ui()
ui = self.__gui_instance
ui.show()
ui.activateWindow() #flash the taskbar entry to make it obvious
if blocking:
print(
"Running GUI, this will block the command line until the window is closed."
)
ui.windowModality = QtCore.Qt.ApplicationModal
try:
return app.exec_()
except:
print(
"Could not run the Qt application: perhaps it is already running?"
)
return
else:
return ui
else:
try:
if blocking:
self.configure_traits()
else:
self.edit_traits()
except AttributeError:
raise NotImplementedError("It looks like the show_gui \
method hasn't been subclassed, there isn't a \
get_qt_ui() method, and the instrument is not \
using traitsui.")
