/usr/lib/python2.7/dist-packages/ginga/canvas/types/layer.py is in python-ginga 2.6.1-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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# layers.py -- classes for special compound objects layered on
# ginga canvases.
#
# This is open-source software licensed under a BSD license.
# Please see the file LICENSE.txt for details.
#
from ginga.canvas.CanvasObject import (CanvasObjectBase,
register_canvas_types)
from ginga.misc.ParamSet import Param
from ginga import Mixins
from ginga.misc.log import get_logger
from ..CompoundMixin import CompoundMixin
from ..CanvasMixin import CanvasMixin
from ..DrawingMixin import DrawingMixin
__all__ = ['CompoundObject', 'Canvas', 'DrawingCanvas']
class CompoundObject(CompoundMixin, CanvasObjectBase):
"""Compound object on a ImageViewCanvas.
Parameters are the child objects making up the compound object.
Objects are drawn in the order listed. Example:
.. code-block: Python
CompoundObject(Point(x, y, radius, ...),
Circle(x, y, radius, ...))
This makes a point inside a circle.
"""
@classmethod
def get_params_metadata(cls):
return [
## Param(name='coord', type=str, default='data',
## valid=['data', 'wcs'],
## description="Set type of coordinates"),
]
def __init__(self, *objects, **kwdargs):
CanvasObjectBase.__init__(self, **kwdargs)
CompoundMixin.__init__(self)
self.objects = list(objects)
self.logger = get_logger('foo', log_stderr=True, level=10)
self.kind = 'compound'
self.editable = False
class Canvas(CanvasMixin, CompoundObject):
"""Class to handle canvas in Ginga."""
@classmethod
def get_params_metadata(cls):
return [
## Param(name='coord', type=str, default='data',
## valid=['data', 'wcs'],
## description="Set type of coordinates"),
]
def __init__(self, *objects, **kwdargs):
CompoundObject.__init__(self, *objects, **kwdargs)
CanvasMixin.__init__(self)
self.kind = 'canvas'
self.editable = False
class DrawingCanvas(Mixins.UIMixin, DrawingMixin, Canvas):
"""Drawing canvas."""
def __init__(self, **kwdargs):
Canvas.__init__(self, **kwdargs)
DrawingMixin.__init__(self)
Mixins.UIMixin.__init__(self)
self.kind = 'drawingcanvas'
self.editable = False
catalog = dict(compoundobject=CompoundObject, canvas=Canvas,
drawingcanvas=DrawingCanvas)
register_canvas_types(catalog)
#END
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