Add bounds properties

Author: bgilbert

openslide/__init__.py

@@ -44,6 +44,10 @@
 PROPERTY_NAME_OBJECTIVE_POWER  = u'openslide.objective-power'
 PROPERTY_NAME_MPP_X            = u'openslide.mpp-x'
 PROPERTY_NAME_MPP_Y            = u'openslide.mpp-y'
+PROPERTY_NAME_BOUNDS_X         = u'openslide.bounds-x'
+PROPERTY_NAME_BOUNDS_Y         = u'openslide.bounds-y'
+PROPERTY_NAME_BOUNDS_WIDTH     = u'openslide.bounds-width'
+PROPERTY_NAME_BOUNDS_HEIGHT    = u'openslide.bounds-height'
 
 class AbstractSlide(object):
     """The base class of a slide object."""