I have been having a problem using the
Accessibility::Text::getBoundedRanges()
function via both cspi and pyatspi.
This is at-spi version 1.22.1 on GNOME 2.22.3 (ubuntu hardy)
In order to test using pyatspi, I modified accerciser with some code
(added
to node.py):
try:
i = acc.queryText()
except NotImplementedError:
pass
else:
if isinstance(i, pyatspi.Accessibility.Text):
print "yes! it's Text!"
# CORBA COMM_FAILURE
#br = i.getBoundedRanges(self.extents.x,
# self.extents.y,
# self.extents.width,
# self.extents.height,
# 0,
# pyatspi.Accessibility.TEXT_CLIP_NONE,
# pyatspi.Accessibility.TEXT_CLIP_NONE)
#print "got Bounded Ranges!"
#for r in br:
# print "text in a Range: %s" % r.content
# works
x, y, width, height = i.getRangeExtents(0, i.characterCount, 0)
print "x %d y %d width %d height %d" % (x, y, width, height)
The commented portion of code marked # CORBA COMM_FAILURE will always
throw
an exception and print the error "CORBA.COMM_FAILURE".
In addition it immediately crashes the application to which the text
node
belongs.
I've tried substituting hard-coded values for x,y,width,height as
well as
changing TEXT_CLIP_NONE to TEXT_CLIP_BOTH but encounter the same error.
Note that other functions like getRangeExtents() work fine.
Similarly in C, using cspi, I have tried to use getBoundedRanges:
AccessibleTextRange **atr;
printf("trying to get AccessibleTextRange hardcoded x
y w
h\n");
fflush(stdout);
atr = AccessibleText_getBoundedRanges(at, 0, 0,
100, 100,
1,
SPI_TEXT_CLIP_BOTH,
SPI_TEXT_CLIP_BOTH);
printf("stored AccessibleTextRange\n");
fflush(stdout);
but it immediately crashes before the second printf. It is evidently a
problem with getBoundedRanges.
Could someone tell me, is this a known problem with certain (all?)
versions
at-spi, or am I forgetting to do something before I call this function?
I noticed that the at-spi source package has an example
(screen-review-test.c) that seems to have an alternative
implementation of
getBoundedRanges()
but that is slower. I am trying to figure out how to use it now, but
is it
worth it?
I don't want to use some alternative implementations that are
impractically
slow.
Thanks for your help,
Andrew Shu
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