else:
if dev.options['source'].capabilities.is_active():
dev.options['source'].value = config_source
logger.info("Will scan using source %s" % str(config_source))
if 'resolution' not in dev.options:
logger.warning("Can't set the resolution on this scanner."
" Option not found")
else:
try:
dev.options['resolution'].value = resolution
except pyinsane.SaneException:
logger.warning("Unable to set scanner resolution to %d: %s" %
(resolution, exc))
if 'mode' not in dev.options:
logger.warning("Can't set the mode on this scanner. Option not found")
else:
if dev.options['mode'].capabilities.is_active():
if "Color" in dev.options['mode'].constraint:
dev.options['mode'].value = "Color"
logger.info("Scanner mode set to 'Color'")
elif "Gray" in dev.options['mode'].constraint:
dev.options['mode'].value = "Gray"
logger.info("Scanner mode set to 'Gray'")
else:
logger.warning("Unable to set scanner mode ! May be 'Lineart'")
maximize_scan_area(dev)
return (dev, resolution)
def do(self):
self.can_run = True
self.emit('calibration-scan-start')
# find the best resolution : the default calibration resolution
# is not always available
resolutions = [x[1] for x in self.__resolutions_store]
resolutions.sort()
resolution = DEFAULT_CALIBRATION_RESOLUTION
for nresolution in resolutions:
if nresolution > DEFAULT_CALIBRATION_RESOLUTION:
break
resolution = nresolution
logger.info("Will do the calibration scan with a resolution of %d"
% resolution)
# scan
dev = pyinsane.Scanner(name=self.__devid)
if dev.options['source'].capabilities.is_active():
dev.options['source'].value = self.__source
logger.info("Scanner source set to '%s'" % self.__source)
try:
dev.options['resolution'].value = resolution
except pyinsane.SaneException as exc:
logger.warning("Unable to set scanner resolution to %d: %s"
% (resolution, exc))
if dev.options['mode'].capabilities.is_active():
if "Color" in dev.options['mode'].constraint:
dev.options['mode'].value = "Color"
logger.info("Scanner mode set to 'Color'")
elif "Gray" in dev.options['mode'].constraint:
dev.options['mode'].value = "Gray"
logger.info("Scanner mode set to 'Gray'")
else:
logger.warning("Unable to set scanner mode ! May be 'Lineart'")
maximize_scan_area(dev)
scan_session = dev.scan(multiple=False)
scan_size = scan_session.scan.expected_size
self.emit('calibration-scan-info', scan_size[0], scan_size[1])
last_line = 0
try:
while self.can_run:
scan_session.scan.read()
next_line = scan_session.scan.available_lines[1]
if (next_line > last_line):
chunk = scan_session.scan.get_image(last_line, next_line)
self.emit('calibration-scan-chunk', last_line, chunk)
last_line = next_line
time.sleep(0) # Give some CPU time to PyGtk
if not self.can_run:
self.emit('calibration-scan-canceled')
scan_session.scan.cancel()
except EOFError:
pass
img = scan_session.get_img()
self.emit('calibration-scan-done', img, resolution)
def _get_scanner(config, devid, preferred_sources=None):
logger.info("Will scan using %s" % str(devid))
resolution = config['scanner_resolution'].value
logger.info("Will scan at a resolution of %d" % resolution)
dev = pyinsane.Scanner(name=devid)
config_source = config['scanner_source'].value
use_config_source = False
if 'source' not in dev.options:
logger.warning(
"Can't set the source on this scanner. Option not found")
else:
if preferred_sources:
use_config_source = False
regexs = [
re.compile(x, flags=re.IGNORECASE) for x in preferred_sources
]
for regex in regexs:
if regex.match(config_source):
use_config_source = True
break
if not use_config_source and preferred_sources:
try:
set_scanner_opt('source', dev.options['source'],
preferred_sources)
except (KeyError, pyinsane.SaneException) as exc:
config_source = config['scanner_source'].value
logger.error(
"Warning: Unable to set scanner source to '%s': %s" %
(preferred_sources, exc))
if dev.options['source'].capabilities.is_active():
dev.options['source'].value = config_source
else:
if dev.options['source'].capabilities.is_active():
dev.options['source'].value = config_source
logger.info("Will scan using source %s" % str(config_source))
if 'resolution' not in dev.options:
logger.warning("Can't set the resolution on this scanner."
" Option not found")
else:
try:
dev.options['resolution'].value = resolution
except pyinsane.SaneException:
logger.warning("Unable to set scanner resolution to %d: %s" %
(resolution, exc))
if 'mode' not in dev.options:
logger.warning("Can't set the mode on this scanner. Option not found")
else:
if dev.options['mode'].capabilities.is_active():
if "Color" in dev.options['mode'].constraint:
dev.options['mode'].value = "Color"
logger.info("Scanner mode set to 'Color'")
elif "24bit Color" in dev.options['mode'].constraint:
# Brother MVC-J410 support ... (@$*#@#!!)
dev.options['mode'].value = "24bit Color"
logger.info("Scanner mode set to '24bit Color'")
elif "Gray" in dev.options['mode'].constraint:
dev.options['mode'].value = "Gray"
logger.info("Scanner mode set to 'Gray'")
else:
logger.warning("Unable to set scanner mode ! May be 'Lineart'")
maximize_scan_area(dev)
return (dev, resolution)