Adds a settings dialog for qrscanner plugin - allows device selection
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@ -1,14 +1,16 @@
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from electrum.util import print_error
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from urlparse import urlparse, parse_qs
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from PyQt4.QtGui import QPushButton, QMessageBox, QDialog, QVBoxLayout, QHBoxLayout, QGridLayout, QLabel
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from PyQt4.QtGui import QPushButton, QMessageBox, QDialog, QVBoxLayout, QHBoxLayout, QGridLayout, QLabel, QLineEdit, QComboBox
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from PyQt4.QtCore import Qt
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from electrum.i18n import _
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import re
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import os
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from electrum import Transaction
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from electrum.bitcoin import MIN_RELAY_TX_FEE, is_valid
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from electrum_gui.qt.qrcodewidget import QRCodeWidget
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from electrum import bmp
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from electrum_gui.qt import HelpButton, EnterButton
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import json
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try:
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@ -32,10 +34,11 @@ class Plugin(BasePlugin):
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return False
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try:
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proc = zbar.Processor()
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proc.init()
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proc.init(video_device=self.video_device())
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except zbar.SystemError:
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# Cannot open video device
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return False
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pass
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#return False
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return True
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@ -62,7 +65,12 @@ class Plugin(BasePlugin):
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def scan_qr(self):
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proc = zbar.Processor()
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proc.init()
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try:
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proc.init(video_device=self.video_device())
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except zbar.SystemError, e:
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QMessageBox.warning(self.gui.main_window, _('Error'), _(e), _('OK'))
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return
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proc.visible = True
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while True:
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@ -242,6 +250,88 @@ class Plugin(BasePlugin):
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if 'message' in qrcode:
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self.gui.main_window.message_e.setText("%s (%s)" % (self.gui.main_window.message_e.text(), qrcode['message']))
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def video_device(self):
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device = self.config.get("video_device", "default")
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if device == 'default':
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device = ''
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return device
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def requires_settings(self):
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return True
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def settings_widget(self, window):
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return EnterButton(_('Settings'), self.settings_dialog)
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def _find_system_cameras(self):
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device_root = "/sys/class/video4linux"
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devices = {} # Name -> device
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if os.path.exists(device_root):
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for device in os.listdir(device_root):
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name = open(os.path.join(device_root, device, 'name')).read()
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devices[name] = os.path.join("/dev",device)
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return devices
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def settings_dialog(self):
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system_cameras = self._find_system_cameras()
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d = QDialog()
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layout = QGridLayout(d)
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layout.addWidget(QLabel("Choose a video device:"),0,0)
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# Create a combo box with the available video devices:
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combo = QComboBox()
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# on change trigger for video device selection, makes the
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# manual device selection only appear when needed:
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def on_change(x):
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combo_text = str(combo.itemText(x))
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combo_data = combo.itemData(x)
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if combo_text == "Manually specify a device":
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custom_device_label.setVisible(True)
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self.video_device_edit.setVisible(True)
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if self.config.get("video_device") == "default":
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self.video_device_edit.setText("")
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else:
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self.video_device_edit.setText(self.config.get("video_device"))
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else:
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custom_device_label.setVisible(False)
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self.video_device_edit.setVisible(False)
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self.video_device_edit.setText(combo_data.toString())
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# on save trigger for the video device selection window,
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# stores the chosen video device on close.
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def on_save():
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device = str(self.video_device_edit.text())
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self.config.set_key("video_device", device)
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d.accept()
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custom_device_label = QLabel("Video device: ")
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custom_device_label.setVisible(False)
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layout.addWidget(custom_device_label,1,0)
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self.video_device_edit = QLineEdit()
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self.video_device_edit.setVisible(False)
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layout.addWidget(self.video_device_edit, 1,1,2,2)
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combo.currentIndexChanged.connect(on_change)
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combo.addItem("Default","default")
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for camera, device in system_cameras.items():
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combo.addItem(camera, device)
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combo.addItem("Manually specify a device",self.config.get("video_device"))
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# Populate the previously chosen device:
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index = combo.findData(self.config.get("video_device"))
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combo.setCurrentIndex(index)
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layout.addWidget(combo,0,1)
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self.accept = QPushButton(_("Done"))
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self.accept.clicked.connect(on_save)
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layout.addWidget(self.accept,4,2)
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if d.exec_():
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return True
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else:
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return False
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