mirror of https://github.com/NaN-tic/nanscan.git
73 lines
2.2 KiB
Python
73 lines
2.2 KiB
Python
# Copyright (C) 2008 by Albert Cervera i Areny
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# albert@nan-tic.com
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the
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# Free Software Foundation, Inc.,
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# 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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import sane
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# PIL Module to convert PIL Image Object to QImage
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import ImageQt
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from common import *
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class SynchronousScanner(QObject):
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def __init__(self, parent=None):
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QObject.__init__(self, parent)
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sane.init()
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self.resolution = 300
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# Member of SynchronousScanner Interface
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def listDevices(self):
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# sane.get_devices() returns an structure like the following
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# [('epson:libusb:001:004', 'Epson', 'GT-8300', 'flatbed scanner')]
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[x[0] for x in sane.get_devices()]
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# Member of SynchronousScanner Interface
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def setResolution(self, value):
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self.resolution = value
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# Member of SynchronousScanner Interface
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def scan(self, name=None):
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if not name:
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devices = self.listDevices()
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if not devices:
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self.emit( SIGNAL('error(int)'), ScannerError.NoDeviceFound )
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return
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name = devices[0]
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try:
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source = sane.open( name )
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except:
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self.emit( SIGNAL('error(int)'), ScannerError.CouldNotOpenDevice )
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return
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source.mode = 'color'
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source.resolution = self.resolution
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source.depth = 32
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iterator = source.multi_scan()
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while True:
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try:
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image = ImageQt.ImageQt( iterator.next() )
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self.emit( SIGNAL('scanned(QImage)'), image )
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except StopIteration, e:
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# If StopIteration is raised, then there are no more images in
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# the scanner
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pass
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except:
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self.emit( SIGNAL('error(int)'), ScannerError.AcquisitionError )
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ScannerBackend = SynchronousScanner |