def applyCommandLineArgs(overlayList,
displayCtx,
argv,
panel=None,
applyOverlayArgs=True,
**kwargs):
"""Applies the command line arguments stored in ``argv`` to the
:class:`.CanvasPanel` ``panel``. If ``panel is None``, it is assumed
that ``argv`` only contains overlay arguments.
:arg overlayList: The :class:`.OverlayList`.
:arg displayCtx: The :class:`.DisplayContext`. If a ``panel`` is
provided, this should be the ``DisplayContext``
associated with that panel.
:arg argv: List of command line arguments to apply.
:arg panel: Optional :class:`.CanvasPanel` to apply the
arguments to.
:arg applyOverlayArgs: If ``False``, overlay arguments are not applied.
All other keyword arguments are passed to the
:func:`.parseargs.applyOverlayArgs` function.
"""
# We patch sys.stdout/stderr
# while parseargs.parseArgs is
# called so we can capture its
# output.
stdout = six.StringIO()
stderr = six.StringIO()
if argv[0] == 'fsleyes':
argv = argv[1:]
parser = argparse.ArgumentParser(add_help=False)
try:
real_stdout = sys.stdout
real_stderr = sys.stderr
sys.stdout = stdout
sys.stderr = stderr
namespace = parseargs.parseArgs(parser, argv, 'fsleyes')
except SystemExit as e:
raise ApplyCLIExit(e.code, stdout.getvalue(), stderr.getvalue())
finally:
sys.stdout = real_stdout
sys.stderr = real_stderr
if applyOverlayArgs:
parseargs.applyOverlayArgs(namespace, overlayList, displayCtx,
**kwargs)
if panel is not None:
sceneOpts = panel.sceneOpts
parseargs.applySceneArgs(namespace, overlayList, displayCtx, sceneOpts)
def makeDisplayContext(namespace, splash):
"""Creates the top-level *FSLeyes* :class:`.DisplayContext` and
:class:`.OverlayList` .
This function does the following:
1. Creates the :class:`.OverlayList` and the top level
:class:`.DisplayContext`.
2. Loads and configures all of the overlays which were passed in on the
command line.
:arg namesace: Parsed command line arguments (see :func:`parseArgs`).
:arg splash: The :class:`.FSLeyesSplash` frame, created in :func:`init`.
:returns: a tuple containing:
- the :class:`.OverlayList`
- the master :class:`.DisplayContext`
"""
import fsleyes_widgets.utils.status as status
import fsleyes.overlay as fsloverlay
import fsleyes.parseargs as parseargs
import fsleyes.displaycontext as displaycontext
# Splash status update must be
# performed on the main thread.
def splashStatus(msg):
wx.CallAfter(splash.SetStatus, msg)
# Redirect status updates
# to the splash frame
status.setTarget(splashStatus)
# Create the overlay list (only one of these
# ever exists) and the master DisplayContext.
# A new DisplayContext instance will be
# created for every new view that is opened
# in the FSLeyesFrame, but all child
# DisplayContext instances will be linked to
# this master one.
overlayList = fsloverlay.OverlayList()
displayCtx = displaycontext.DisplayContext(overlayList)
log.debug('Created overlay list and master DisplayContext ({})'.format(
id(displayCtx)))
# Load the images - the splash screen status will
# be updated with the currently loading overlay name.
parseargs.applyMainArgs(namespace, overlayList, displayCtx)
parseargs.applyOverlayArgs(namespace, overlayList, displayCtx)
return overlayList, displayCtx
def applyCommandLineArgs(overlayList, displayCtx, argv, panel=None):
"""Applies the command line arguments stored in ``argv`` to the
:class:`.CanvasPanel` ``panel``. If ``panel is None``, it is assumed
that ``argv`` only contains overlay arguments.
"""
# We patch sys.stdout/stderr
# while parseargs.parseArgs is
# called so we can capture its
# output.
stdout = six.StringIO()
stderr = six.StringIO()
if argv[0] == 'fsleyes':
argv = argv[1:]
parser = argparse.ArgumentParser(add_help=False)
try:
real_stdout = sys.stdout
real_stderr = sys.stderr
sys.stdout = stdout
sys.stderr = stderr
namespace = parseargs.parseArgs(parser, argv, 'fsleyes')
except SystemExit as e:
raise ApplyCLIExit(e.code, stdout.getvalue(), stderr.getvalue())
finally:
sys.stdout = real_stdout
sys.stderr = real_stderr
parseargs.applyOverlayArgs(namespace, overlayList, displayCtx)
# No panel, no need to do anything else
if panel is None:
return
sceneOpts = panel.sceneOpts
parseargs.applySceneArgs(namespace, overlayList, displayCtx, sceneOpts)
def makeDisplayContext(namespace):
"""Creates :class:`.OverlayList`, :class:`.DisplayContext``, and
:class:`.SceneOpts` instances which represent the scene to be rendered,
as described by the arguments in the given ``namespace`` object.
"""
# Create an overlay list and display context.
# The DisplayContext, Display and DisplayOpts
# classes are designed to be created in a
# parent-child hierarchy. So we need to create
# a 'dummy' master display context to make
# things work properly.
overlayList = fsloverlay.OverlayList()
masterDisplayCtx = displaycontext.DisplayContext(overlayList)
childDisplayCtx = displaycontext.DisplayContext(overlayList,
parent=masterDisplayCtx)
# We have to artificially create a ref to the
# master display context, otherwise it may get
# gc'd arbitrarily. The parent reference in the
# child creation above is ultimately stored as
# a weakref, so we need to create a real one.
childDisplayCtx.masterDisplayCtx = masterDisplayCtx
# The handleOverlayArgs function uses the
# fsleyes.overlay.loadOverlays function,
# which will call these functions as it
# goes through the list of overlay to be
# loaded.
def load(ovl):
log.info('Loading overlay {} ...'.format(ovl))
def error(ovl, error):
log.info('Error loading overlay {}: '.format(ovl, error))
# Load the overlays specified on the command
# line, and configure their display properties
parseargs.applyOverlayArgs(namespace,
overlayList,
masterDisplayCtx,
loadFunc=load,
errorFunc=error)
# Create a SceneOpts instance describing
# the scene to be rendered. The parseargs
# module assumes that GL canvases have
# already been created, so we use mock
# objects to trick it. The options applied
# to these mock objects are applied to the
# real canvases later on, in the render
# function below.
if namespace.scene == 'ortho':
sceneOpts = orthoopts.OrthoOpts(MockCanvasPanel(3))
elif namespace.scene == 'lightbox':
sceneOpts = lightboxopts.LightBoxOpts(MockCanvasPanel(1))
elif namespace.scene == '3d':
sceneOpts = scene3dopts.Scene3DOpts(MockCanvasPanel(1))
# 3D views default to
# world display space
if namespace.scene == '3d':
childDisplayCtx.displaySpace = 'world'
parseargs.applySceneArgs(namespace, overlayList, childDisplayCtx,
sceneOpts)
# Centre the location. The DisplayContext
# will typically centre its location on
# initialisation, but this may not work
# if any overlay arguments change the bounds
# of an overlay (e.g. mesh reference image)
if namespace.worldLoc is None and namespace.voxelLoc is None:
b = childDisplayCtx.bounds
childDisplayCtx.location = [
b.xlo + 0.5 * b.xlen, b.ylo + 0.5 * b.ylen, b.zlo + 0.5 * b.zlen
]
# This has to be applied after applySceneArgs,
# in case the user used the '-std'/'-std1mm'
# options.
if namespace.selectedOverlay is not None:
masterDisplayCtx.selectedOverlay = namespace.selectedOverlay
if len(overlayList) == 0:
raise RuntimeError('At least one overlay must be specified')
return overlayList, childDisplayCtx, sceneOpts
def makeDisplayContext(namespace, splash):
"""Creates the top-level *FSLeyes* :class:`.DisplayContext` and
:class:`.OverlayList` .
This function does the following:
1. Creates the :class:`.OverlayList` and the top level
:class:`.DisplayContext`.
2. Loads and configures all of the overlays which were passed in on the
command line.
:arg namesace: Parsed command line arguments (see :func:`parseArgs`).
:arg splash: The :class:`.FSLeyesSplash` frame, created in :func:`init`.
:returns: a tuple containing:
- the :class:`.OverlayList`
- the master :class:`.DisplayContext`
"""
import fsleyes_widgets.utils.status as status
import fsleyes.overlay as fsloverlay
import fsleyes.parseargs as parseargs
import fsleyes.displaycontext as displaycontext
# Splash status update must be
# performed on the main thread.
def splashStatus(msg):
wx.CallAfter(splash.SetStatus, msg)
# Redirect status updates
# to the splash frame
status.setTarget(splashStatus)
# Create the overlay list (only one of these
# ever exists) and the master DisplayContext.
# A new DisplayContext instance will be
# created for every new view that is opened
# in the FSLeyesFrame, but all child
# DisplayContext instances will be linked to
# this master one.
overlayList = fsloverlay.OverlayList()
displayCtx = displaycontext.DisplayContext(overlayList)
# While the DisplayContext may refer to
# multiple overlay groups, we are currently
# using just one, allowing the user to specify
# a set of overlays for which their display
# properties are 'locked'.
lockGroup = displaycontext.OverlayGroup(displayCtx, overlayList)
displayCtx.overlayGroups.append(lockGroup)
log.debug('Created overlay list and master DisplayContext ({})'.format(
id(displayCtx)))
# Load the images - the splash screen status will
# be updated with the currently loading overlay name.
#
# The applyOverlayArgs function gets called before
# the applySceneArgs function, so we'll manually
# apply some important settings to the DC here so
# they get used when any overlays are loaded.
if namespace.bigmem is not None:
displayCtx.loadInMemory = namespace.bigmem
if namespace.autoDisplay is not None:
displayCtx.autoDisplay = namespace.autoDisplay
parseargs.applyOverlayArgs(namespace, overlayList, displayCtx)
return overlayList, displayCtx
def applyCommandLineArgs(overlayList,
displayCtx,
argv,
panel=None,
applyOverlayArgs=True,
baseDir=None,
**kwargs):
"""Applies the command line arguments stored in ``argv`` to the
:class:`.CanvasPanel` ``panel``. If ``panel is None``, it is assumed
that ``argv`` only contains overlay arguments.
:arg overlayList: The :class:`.OverlayList`.
:arg displayCtx: The :class:`.DisplayContext`. If a ``panel`` is
provided, this should be the ``DisplayContext``
associated with that panel.
:arg argv: List of command line arguments to apply.
:arg panel: Optional :class:`.CanvasPanel` to apply the
arguments to.
:arg applyOverlayArgs: If ``False``, overlay arguments are not applied.
:arg baseDir: Directory from which to interpret the arguments,
in case this is different from the current working
directory, and overlays have been specified with
relative paths.
All other keyword arguments are passed to the
:func:`.parseargs.applyOverlayArgs` function.
"""
# We patch sys.stdout/stderr
# while parseargs.parseArgs is
# called so we can capture its
# output.
stdout = six.StringIO()
stderr = six.StringIO()
if argv[0] == 'fsleyes':
argv = argv[1:]
parser = argparse.ArgumentParser(add_help=False)
try:
real_stdout = sys.stdout
real_stderr = sys.stderr
sys.stdout = stdout
sys.stderr = stderr
with chdir(baseDir):
namespace = parseargs.parseArgs(parser, argv, 'fsleyes')
except SystemExit as e:
raise ApplyCLIExit(e.code, stdout.getvalue(), stderr.getvalue())
finally:
sys.stdout = real_stdout
sys.stderr = real_stderr
if baseDir is not None:
for o in namespace.overlays:
if not op.isabs(o.overlay):
o.overlay = op.join(baseDir, o.overlay)
if applyOverlayArgs:
parseargs.applyOverlayArgs(namespace, overlayList, displayCtx,
**kwargs)
if panel is not None:
sceneOpts = panel.sceneOpts
parseargs.applySceneArgs(namespace, overlayList, displayCtx, sceneOpts)