lsst.afw.display.interface Namespace Reference

Classes
class	Display
class	Event
	A class to handle events such as key presses in image display windows. More...

Functions
def	_makeDisplayImpl
	Return the DisplayImpl for the named backend. More...
def	noop_callback
	Callback function: arguments key, x, y. More...
def	h_callback
def	setDefaultBackend
def	getDefaultBackend
def	setDefaultFrame
def	getDefaultFrame
def	incrDefaultFrame
def	setDefaultMaskTransparency
def	setDefaultMaskPlaneColor
	Set the default mapping from mask plane names to colours. More...
def	getDisplay
	Return the Display indexed by frame, creating it if needs be. More...
def	delAllDisplays
	Delete and close all known display. More...

Variables
tuple	__all__
string	WHITE = "white"
string	BLACK = "black"
string	RED = "red"
string	GREEN = "green"
string	BLUE = "blue"
string	CYAN = "cyan"
string	MAGENTA = "magenta"
string	YELLOW = "yellow"
string	ORANGE = "orange"

Function Documentation

def lsst.afw.display.interface._makeDisplayImpl (   display,   backend,   args,   kwargs  )

private

Return the DisplayImpl for the named backend.

Parameters

backend	Name of device. Should be importable, either absolutely or relative to lsst.display
frame	Identifier for this instance of the backend
args	Arguments passed to DisplayImpl.__init__
kwrgs	Keywords arguments passed to DisplayImpl.__init__

E.g. import lsst.afw.display as afwDisplay display = afwDisplay.Display("ds9", frame=1) would call _makeDisplayImpl(..., "ds9", 1) and import the ds9 implementation of DisplayImpl from lsst.display.ds9

Definition at line 57 of file interface.py.

def _makeDisplayImpl(display, backend, *args, **kwargs):
    """!Return the DisplayImpl for the named backend

    \param backend Name of device.  Should be importable, either absolutely or relative to lsst.display
    \param frame  Identifier for this instance of the backend
    \param args   Arguments passed to DisplayImpl.__init__
    \param kwrgs  Keywords arguments passed to DisplayImpl.__init__

    E.g.
         import lsst.afw.display as afwDisplay
         display = afwDisplay.Display("ds9", frame=1)
     would call
         _makeDisplayImpl(..., "ds9", 1)
    and import the ds9 implementation of DisplayImpl from lsst.display.ds9
    """
    _disp = None
    for dt in (backend, ".%s" % backend, "lsst.afw.display.%s" % backend):
        try:
            _disp = importlib.import_module(dt, package="lsst.display")
            break
        except ImportError as e:
            pass

    if not _disp:
        raise e

    return _disp.DisplayImpl(display, *args, **kwargs)

#-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-