def __init__(self, schema, pipeline_command=None, **kwargs):
from barcode_scanner.scanner import BarcodeScanner
super(MetaDataDialog, self).__init__(schema, **kwargs)
self.scanner = BarcodeScanner(pipeline_command)
def __init__(self, schema, pipeline_command=None, **kwargs):
from barcode_scanner.scanner import BarcodeScanner
super(MetaDataDialog, self).__init__(schema, **kwargs)
self.scanner = BarcodeScanner(pipeline_command)
class MetaDataDialog(SchemaDialog):
def __init__(self, schema, pipeline_command=None, **kwargs):
from barcode_scanner.scanner import BarcodeScanner
super(MetaDataDialog, self).__init__(schema, **kwargs)
self.scanner = BarcodeScanner(pipeline_command)
def create_ui(self):
from barcode_scanner.gtk_matplotlib import ScannerView
super(MetaDataDialog, self).create_ui()
self.scanner_view = ScannerView(self.scanner)
self.scanner_view.widget.show_all()
self.scanner_window = gtk.Dialog(title='Barcode scan',
parent=self.window,
flags=gtk.DIALOG_MODAL |
gtk.DIALOG_DESTROY_WITH_PARENT)
(self.scanner_window.get_content_area()
.pack_start(self.scanner_view.widget))
self.scanner.start()
def create_form_view(self, values=None, use_markup=True):
super(MetaDataDialog, self).create_form_view(values, use_markup)
table = self.form_view.widget.get_children()[0]
children = table.get_children()
def on_symbols_found_i(scanner, np_img, symbols, row_i):
from .proxy import proxy_for
# Stop listening for `symbols-found` signal.
scanner.disconnect(row_i['callback_ids']['symbol'])
del row_i['callback_ids']['symbol']
# Concatenate symbols text as comma-separated list.
symbol_data = ', '.join([symbol_j['data'] for symbol_j in symbols])
# Fill widget with scanned value (if possible).
proxy = proxy_for(row_i['widget'])
try:
proxy.set_widget_value(symbol_data)
except TypeError:
logger.error('Could not set value for "%s"',
row_i['label'].get_label(), exc_info=True)
else:
# Make system bell sound to indicate a scan has
# completed.
print '\a\a',
# Re-enable the scan button.
row_i['button'].set_sensitive(True)
# Close scan dialog after a short delay (let user see the
# scanned match).
gtk.timeout_add(1000, lambda *args:
self.scanner_window.hide())
return True
# Attach callback for when scan dialog is closed.
def on_scanner_view__delete_event(window, event, row_i):
'''
When scanner view is closed, stop the scan, hide the window and
re-enable the button that initiated the scan.
'''
# Disable scanner to reduce CPU usage and prevent unexpected
# `symbols-found` signals. Note that GStreamer video pipeline
# stays running.
self.scanner_view.disable_scan()
# Hide scanner dialog window.
self.scanner_window.hide()
# Enable scan button.
row_i['button'].set_sensitive(True)
self.scanner_window.disconnect(row_i['callback_ids']
['scanner_window'])
del row_i['callback_ids']['scanner_window']
return gtk.TRUE
# From list of `gtk.Table` widget children, extract list of `(widget,
# event_box)` pairs, one pair per form field.
# N.B., table widgets are listed in reverse order of insertion in list
# of children, so list of pairs is reversed (i.e., `[::-1]`).
widget_pairs = [children[2 * i:2 * i + 2]
for i in xrange(len(self.form_view.form.schema))][::-1]
for i, (name_i, form_field_i) in enumerate(self.form_view.form.schema
.iteritems()):
widget_i, event_box_i = widget_pairs[i]
label_i = event_box_i.get_children()[0]
# Add scan button beside each widget.
button_scan_i = gtk.Button('Scan')
button_scan_i.show()
table.attach(button_scan_i, 2, 3, i, i + 1)
button_scan_i.props.name = label_i.get_label()
# Add callback function for each scan button to launch a barcode
# scanning dialog.
def on_button_scan_i__clicked(i, widget, event_box, label):
# Wrap callback to bind widget, etc. data to callback. This is
# necessary, since the `widget_i, label_i, etc.`, references
# are modified during each loop iteration.
def wrapped(button):
# Disable button until scan has completed or is cancelled.
button.set_sensitive(False)
row_i = {'widget': widget,
'event_box': event_box,
'label': label,
'label_label': label.get_label(),
'button': button,
'callback_ids': {}}
# Attach callback to signal triggered when symbol/symbols
# are found by the scanner.
row_i['callback_ids']['symbol'] =\
self.scanner.connect('symbols-found',
on_symbols_found_i, row_i)
row_i['callback_ids']['scanner_window'] =\
(self.scanner_window
.connect('delete_event',
on_scanner_view__delete_event, row_i))
# Launch barcode scan dialog.
self.scanner_window.show()
self.scanner_view.enable_scan()
return wrapped
button_scan_i.connect('clicked',
on_button_scan_i__clicked(i, widget_i,
event_box_i,
label_i))
def run(self, values=None, parent=None, use_markup=True):
# Run dialog.
result = super(MetaDataDialog, self).run(values=values, parent=parent,
use_markup=use_markup)
try:
# Destroy scan widget.
self.scanner_view.hide()
# Stop scanner.
self.scanner.stop()
finally:
return result
class MetaDataDialog(SchemaDialog):
def __init__(self, schema, pipeline_command=None, **kwargs):
from barcode_scanner.scanner import BarcodeScanner
super(MetaDataDialog, self).__init__(schema, **kwargs)
self.scanner = BarcodeScanner(pipeline_command)
def create_ui(self):
from barcode_scanner.Gtk_matplotlib import ScannerView
super(MetaDataDialog, self).create_ui()
self.scanner_view = ScannerView(self.scanner)
self.scanner_view.widget.show_all()
self.scanner_window = Gtk.Dialog(title='Barcode scan',
parent=self.window,
flags=Gtk.DIALOG_MODAL |
Gtk.DIALOG_DESTROY_WITH_PARENT)
(self.scanner_window.get_content_area()
.pack_start(self.scanner_view.widget))
self.scanner.start()
def create_form_view(self, values=None, use_markup=True):
super(MetaDataDialog, self).create_form_view(values, use_markup)
table = self.form_view.widget.get_children()[0]
children = table.get_children()
def on_symbols_found_i(scanner, np_img, symbols, row_i):
from .proxy import proxy_for
# Stop listening for `symbols-found` signal.
scanner.disconnect(row_i['callback_ids']['symbol'])
del row_i['callback_ids']['symbol']
# Concatenate symbols text as comma-separated list.
symbol_data = ', '.join([symbol_j['data'] for symbol_j in symbols])
# Fill widget with scanned value (if possible).
proxy = proxy_for(row_i['widget'])
try:
proxy.set_widget_value(symbol_data)
except TypeError:
logger.error('Could not set value for "%s"',
row_i['label'].get_label(), exc_info=True)
else:
# Make system bell sound to indicate a scan has
# completed.
print('\a\a',)
# Re-enable the scan button.
row_i['button'].set_sensitive(True)
# Close scan dialog after a short delay (let user see the
# scanned match).
Gtk.timeout_add(1000, lambda *args:
self.scanner_window.hide())
return True
# Attach callback for when scan dialog is closed.
def on_scanner_view__delete_event(window, event, row_i):
"""
When scanner view is closed, stop the scan, hide the window and
re-enable the button that initiated the scan.
"""
# Disable scanner to reduce CPU usage and prevent unexpected
# `symbols-found` signals. Note that GStreamer video pipeline
# stays running.
self.scanner_view.disable_scan()
# Hide scanner dialog window.
self.scanner_window.hide()
# Enable scan button.
row_i['button'].set_sensitive(True)
self.scanner_window.disconnect(row_i['callback_ids']
['scanner_window'])
del row_i['callback_ids']['scanner_window']
return Gtk.TRUE
# From list of `Gtk.Table` widget children, extract list of `(widget,
# event_box)` pairs, one pair per form field.
# N.B., table widgets are listed in reverse order of insertion in list
# of children, so list of pairs is reversed (i.e., `[::-1]`).
widget_pairs = [children[2 * i:2 * i + 2]
for i in range(len(self.form_view.form.schema))][::-1]
for i, (name_i, form_field_i) in enumerate(self.form_view.form.schema
.iteritems()):
widget_i, event_box_i = widget_pairs[i]
label_i = event_box_i.get_children()[0]
# Add scan button beside each widget.
button_scan_i = Gtk.Button('Scan')
button_scan_i.show()
table.attach(button_scan_i, 2, 3, i, i + 1)
button_scan_i.props.name = label_i.get_label()
# Add callback function for each scan button to launch a barcode
# scanning dialog.
def on_button_scan_i__clicked(i, widget, event_box, label):
# Wrap callback to bind widget, etc. data to callback. This is
# necessary, since the `widget_i, label_i, etc.`, references
# are modified during each loop iteration.
def wrapped(button):
# Disable button until scan has completed or is cancelled.
button.set_sensitive(False)
row_i = {'widget': widget,
'event_box': event_box,
'label': label,
'label_label': label.get_label(),
'button': button,
'callback_ids': {}}
# Attach callback to signal triggered when symbol/symbols
# are found by the scanner.
row_i['callback_ids']['symbol'] =\
self.scanner.connect('symbols-found',
on_symbols_found_i, row_i)
row_i['callback_ids']['scanner_window'] =\
(self.scanner_window
.connect('delete_event',
on_scanner_view__delete_event, row_i))
# Launch barcode scan dialog.
self.scanner_window.show()
self.scanner_view.enable_scan()
return wrapped
button_scan_i.connect('clicked',
on_button_scan_i__clicked(i, widget_i,
event_box_i,
label_i))
def run(self, values=None, parent=None, use_markup=True):
# Run dialog.
result = super(MetaDataDialog, self).run(values=values, parent=parent,
use_markup=use_markup)
try:
# Destroy scan widget.
self.scanner_view.hide()
# Stop scanner.
self.scanner.stop()
finally:
return result