from electrum.util import print_error
from urlparse import urlparse, parse_qs
-from PyQt4.QtGui import QPushButton, QMessageBox, QDialog, QVBoxLayout, QHBoxLayout, QGridLayout, QLabel
+from PyQt4.QtGui import QPushButton, QMessageBox, QDialog, QVBoxLayout, QHBoxLayout, QGridLayout, QLabel, QLineEdit, QComboBox
from PyQt4.QtCore import Qt
from electrum.i18n import _
import re
+import os
from electrum import Transaction
from electrum.bitcoin import MIN_RELAY_TX_FEE, is_valid
from electrum_gui.qt.qrcodewidget import QRCodeWidget
from electrum import bmp
+from electrum_gui.qt import HelpButton, EnterButton
import json
try:
return False
try:
proc = zbar.Processor()
- proc.init()
+ proc.init(video_device=self.video_device())
except zbar.SystemError:
# Cannot open video device
- return False
+ pass
+ #return False
return True
def scan_qr(self):
proc = zbar.Processor()
- proc.init()
+ try:
+ proc.init(video_device=self.video_device())
+ except zbar.SystemError, e:
+ QMessageBox.warning(self.gui.main_window, _('Error'), _(e), _('OK'))
+ return
+
proc.visible = True
while True:
if 'message' in qrcode:
self.gui.main_window.message_e.setText("%s (%s)" % (self.gui.main_window.message_e.text(), qrcode['message']))
+ def video_device(self):
+ device = self.config.get("video_device", "default")
+ if device == 'default':
+ device = ''
+ return device
+
+ def requires_settings(self):
+ return True
+
+ def settings_widget(self, window):
+ return EnterButton(_('Settings'), self.settings_dialog)
+
+ def _find_system_cameras(self):
+ device_root = "/sys/class/video4linux"
+ devices = {} # Name -> device
+ if os.path.exists(device_root):
+ for device in os.listdir(device_root):
+ name = open(os.path.join(device_root, device, 'name')).read()
+ devices[name] = os.path.join("/dev",device)
+ return devices
+
+ def settings_dialog(self):
+ system_cameras = self._find_system_cameras()
+
+ d = QDialog()
+ layout = QGridLayout(d)
+ layout.addWidget(QLabel("Choose a video device:"),0,0)
+
+ # Create a combo box with the available video devices:
+ combo = QComboBox()
+
+ # on change trigger for video device selection, makes the
+ # manual device selection only appear when needed:
+ def on_change(x):
+ combo_text = str(combo.itemText(x))
+ combo_data = combo.itemData(x)
+ if combo_text == "Manually specify a device":
+ custom_device_label.setVisible(True)
+ self.video_device_edit.setVisible(True)
+ if self.config.get("video_device") == "default":
+ self.video_device_edit.setText("")
+ else:
+ self.video_device_edit.setText(self.config.get("video_device"))
+ else:
+ custom_device_label.setVisible(False)
+ self.video_device_edit.setVisible(False)
+ self.video_device_edit.setText(combo_data.toString())
+
+ # on save trigger for the video device selection window,
+ # stores the chosen video device on close.
+ def on_save():
+ device = str(self.video_device_edit.text())
+ self.config.set_key("video_device", device)
+ d.accept()
+
+ custom_device_label = QLabel("Video device: ")
+ custom_device_label.setVisible(False)
+ layout.addWidget(custom_device_label,1,0)
+ self.video_device_edit = QLineEdit()
+ self.video_device_edit.setVisible(False)
+ layout.addWidget(self.video_device_edit, 1,1,2,2)
+ combo.currentIndexChanged.connect(on_change)
+
+ combo.addItem("Default","default")
+ for camera, device in system_cameras.items():
+ combo.addItem(camera, device)
+ combo.addItem("Manually specify a device",self.config.get("video_device"))
+
+ # Populate the previously chosen device:
+ index = combo.findData(self.config.get("video_device"))
+ combo.setCurrentIndex(index)
+
+ layout.addWidget(combo,0,1)
+
+ self.accept = QPushButton(_("Done"))
+ self.accept.clicked.connect(on_save)
+ layout.addWidget(self.accept,4,2)
+
+ if d.exec_():
+ return True
+ else:
+ return False