def test_convert_quality(self):
"""
Correct ImageMagick convert strings are created (using Unicode data)
"""
im = u"/usr/bin/convert"
f = u"/øøø/test.pdf"
path = u"/øøø/"
assert convert_quality("highest", im, f, path) == u'"%s" -density 300 "%s" -resample 120 -unsharp 0x.5 -trim +repage -bordercolor white -border 20 "%s"' % (im, f, path)
assert convert_quality("high", im, f, path) == u'"%s" -density 250 "%s" -resample 100 -unsharp 0x.5 -trim +repage -bordercolor white -border 20 "%s"' % (im, f, path)
assert convert_quality("normal", im, f, path) == u'"%s" -density 200 "%s" -resample 88 -unsharp 0x.5 -trim +repage -bordercolor white -border 20 "%s"' % (im, f, path)
def convert(self):
"""
If the filetype is PDF/PS, convert to a (temporary) series of images and
loads them. Find out the directory length before/after the conversion to
know how many 'pages' were converted - used then to create a new
Whyteboard tabs for each page. The PDF's file location, convert quality
and converted images are written into a "library" file, effectively
caching the conversion.
An attempt at randomising the temp. file name is made using alphanumeric
characters to help minimise conflict.
"""
if not self.im_location:
self.prompt_for_im()
if not self.im_location: # above will have changed this if IM exists
return
_file = self.temp_file
logger.info("Converting [%s]", os.path.basename(_file))
quality = Config().convert_quality()
cached = self.library.lookup(_file, quality)
if cached:
logger.debug("PDF is cached")
self.display_converted(_file, cached)
else:
path = get_home_dir(u"wtbd-tmp") # directory to store the images
tmp_file = make_filename()
before = os.walk(path).next()[2] # file count before convert
full_path = path + tmp_file + u".png"
logger.debug("Writing PDF images as [%s]", full_path)
cmd = convert_quality(quality, self.im_location, _file, full_path)
logger.info("Starting to convert PDF")
self.gui.convert_dialog(cmd) # show progress bar, kick off convert
if self.gui.convert_cancelled:
logger.info("Convert process cancelled by user")
return
after = os.walk(path).next()[2]
count = len(after) - len(before)
images = []
ignore = False
logger.info("Convert process complete. %i images were created", count)
if not count:
logger.warning("Failed to convert.")
wx.MessageBox(
_("Failed to convert file. Ensure GhostScript is installed\nhttp://pages.cs.wisc.edu/~ghost/"),
_("Conversion Failed"),
)
open_url(u"http://pages.cs.wisc.edu/~ghost/")
return
if count == 1:
images.append(path + tmp_file + u".png")
ignore = True
else:
for x in range(count):
# store the temp file path for this file in the dictionary
images.append(u"%s%s-%i.png" % (path, tmp_file, x))
self.display_converted(_file, images, ignore)
self.library.write(_file, images, quality)
# Just in case it's a file with many pages
self.gui.show_progress_dialog(_("Loading..."))
self.gui.on_done_load()