#1115 Add QR Code for onion URL

onionshare_gui/tab/server_status.py

@@ -24,7 +24,8 @@ from PyQt5 import QtCore, QtWidgets, QtGui
 from onionshare import strings
 
 from ..widgets import Alert
-
+from ..widgets import Image
+from ..widgets import QRCodeDialog
 
 class ServerStatus(QtWidgets.QWidget):
     """
@@ -96,6 +97,14 @@ class ServerStatus(QtWidgets.QWidget):
         self.copy_hidservauth_button = QtWidgets.QPushButton(
             strings._("gui_copy_hidservauth")
         )
+        self.show_url_qr_code_button = QtWidgets.QPushButton(strings._("gui_show_url_qr_code"))
+        self.show_url_qr_code_button.hide()
+        self.show_url_qr_code_button.clicked.connect(self.show_url_qr_code_button_clicked)
+        self.show_url_qr_code_button.setFlat(True)
+        self.show_url_qr_code_button.setStyleSheet(
+            self.common.gui.css["server_status_url_buttons"]
+        )
+
         self.copy_hidservauth_button.setFlat(True)
         self.copy_hidservauth_button.setStyleSheet(
             self.common.gui.css["server_status_url_buttons"]
@@ -103,6 +112,7 @@ class ServerStatus(QtWidgets.QWidget):
         self.copy_hidservauth_button.clicked.connect(self.copy_hidservauth)
         url_buttons_layout = QtWidgets.QHBoxLayout()
         url_buttons_layout.addWidget(self.copy_url_button)
+        url_buttons_layout.addWidget(self.show_url_qr_code_button)
         url_buttons_layout.addWidget(self.copy_hidservauth_button)
         url_buttons_layout.addStretch()
 
@@ -190,6 +200,8 @@ class ServerStatus(QtWidgets.QWidget):
         self.url.show()
         self.copy_url_button.show()
 
+        self.show_url_qr_code_button.show()
+
         if self.settings.get("general", "client_auth"):
             self.copy_hidservauth_button.show()
         else:
@@ -364,6 +376,12 @@ class ServerStatus(QtWidgets.QWidget):
             self.cancel_server()
         self.button_clicked.emit()
 
+    def show_url_qr_code_button_clicked(self):
+        """
+        Show a QR code of the onion URL.
+        """
+        self.qr_code_dialog = QRCodeDialog(self.common, self.get_url())
+        
     def start_server(self):
         """
         Start the server.

onionshare_gui/widgets.py

@@ -18,7 +18,8 @@ You should have received a copy of the GNU General Public License
 along with this program.  If not, see <http://www.gnu.org/licenses/>.
 """
 from PyQt5 import QtCore, QtWidgets, QtGui
-
+from onionshare import strings
+import qrcode
 
 class Alert(QtWidgets.QMessageBox):
     """
@@ -90,3 +91,60 @@ class MinimumWidthWidget(QtWidgets.QWidget):
         super(MinimumWidthWidget, self).__init__()
         self.setMinimumWidth(width)
 
+
+class Image(qrcode.image.base.BaseImage):
+    def __init__(self, border, width, box_size):
+        self.border = border
+        self.width = width
+        self.box_size = box_size
+        size = (width + border * 2) * box_size
+        self._image = QtGui.QImage(
+            size, size, QtGui.QImage.Format_RGB16)
+        self._image.fill(QtCore.Qt.white)
+
+    def pixmap(self):
+        return QtGui.QPixmap.fromImage(self._image)
+
+    def drawrect(self, row, col):
+        painter = QtGui.QPainter(self._image)
+        painter.fillRect(
+            (col + self.border) * self.box_size,
+            (row + self.border) * self.box_size,
+            self.box_size, self.box_size,
+            QtCore.Qt.black)
+
+    def save(self, stream, kind=None):
+        pass
+
+
+class QRCodeDialog(QtWidgets.QDialog):
+    """
+    A dialog showing a QR code.
+    """
+
+    def __init__(self, common, text):
+        super(QRCodeDialog, self).__init__()
+
+        self.common = common
+        self.text = text
+
+        self.common.log("QrCode", "__init__")
+
+        self.qr_label = QtWidgets.QLabel(self)
+        self.qr_label.setPixmap(
+            qrcode.make(self.text, image_factory=Image).pixmap())
+
+        self.qr_label_description = QtWidgets.QLabel(self)
+        self.qr_label_description.setText(strings._("gui_qr_code_description"))
+        self.qr_label_description.setWordWrap(True)
+
+        self.setWindowTitle(strings._("gui_qr_code_dialog_title"))
+        self.setWindowIcon(
+            QtGui.QIcon(self.common.get_resource_path("images/logo.png"))
+        )
+        layout = QtWidgets.QVBoxLayout(self)
+        layout.addWidget(self.qr_label)
+        layout.addWidget(self.qr_label_description)
+
+        self.exec_()
+

poetry.lock

@@ -53,9 +53,9 @@ python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
 version = "7.1.1"
 
 [[package]]
-category = "dev"
+category = "main"
 description = "Cross-platform colored terminal text."
-marker = "sys_platform == \"win32\""
+marker = "platform_system == \"Windows\" or sys_platform == \"win32\""
 name = "colorama"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
@@ -356,6 +356,24 @@ pytest = ">=3.0.0"
 dev = ["pre-commit", "tox"]
 doc = ["sphinx", "sphinx-rtd-theme"]
 
+[[package]]
+category = "main"
+description = "QR Code image generator"
+name = "qrcode"
+optional = false
+python-versions = "*"
+version = "6.1"
+
+[package.dependencies]
+colorama = "*"
+six = "*"
+
+[package.extras]
+dev = ["tox", "pytest", "mock"]
+maintainer = ["zest.releaser"]
+pil = ["pillow"]
+test = ["pytest", "pytest-cov", "mock"]
+
 [[package]]
 category = "main"
 description = "Python HTTP for Humans."
@@ -375,7 +393,7 @@ security = ["pyOpenSSL (>=0.14)", "cryptography (>=1.3.4)"]
 socks = ["PySocks (>=1.5.6,<1.5.7 || >1.5.7)", "win-inet-pton"]
 
 [[package]]
-category = "dev"
+category = "main"
 description = "Python 2 and 3 compatibility utilities"
 name = "six"
 optional = false
@@ -451,7 +469,7 @@ docs = ["sphinx", "jaraco.packaging (>=3.2)", "rst.linker (>=1.9)"]
 testing = ["jaraco.itertools", "func-timeout"]
 
 [metadata]
-content-hash = "41d68ea93701fdaa1aa56159195db7a65863e3b34cc7305ef4a3f5d02f2bdf13"
+content-hash = "3f46cfec01bcb5166c9f354aaf4439064b477955f3ea2373fcfdb65d5b89276e"
 python-versions = "^3.7"
 
 [metadata.files]
@@ -671,6 +689,10 @@ pytest-qt = [
     {file = "pytest-qt-3.3.0.tar.gz", hash = "sha256:714b0bf86c5313413f2d300ac613515db3a1aef595051ab8ba2ffe619dbe8925"},
     {file = "pytest_qt-3.3.0-py2.py3-none-any.whl", hash = "sha256:5f8928288f50489d83f5d38caf2d7d9fcd6e7cf769947902caa4661dc7c851e3"},
 ]
+qrcode = [
+    {file = "qrcode-6.1-py2.py3-none-any.whl", hash = "sha256:3996ee560fc39532910603704c82980ff6d4d5d629f9c3f25f34174ce8606cf5"},
+    {file = "qrcode-6.1.tar.gz", hash = "sha256:505253854f607f2abf4d16092c61d4e9d511a3b4392e60bff957a68592b04369"},
+]
 requests = [
     {file = "requests-2.23.0-py2.py3-none-any.whl", hash = "sha256:43999036bfa82904b6af1d99e4882b560e5e2c68e5c4b0aa03b655f3d7d73fee"},
     {file = "requests-2.23.0.tar.gz", hash = "sha256:b3f43d496c6daba4493e7c431722aeb7dbc6288f52a6e04e7b6023b0247817e6"},

pyproject.toml

@@ -30,6 +30,7 @@ urllib3 = "*"
 Werkzeug = "*"
 watchdog = "*"
 psutil = "*"
+qrcode = "^6.1"
 
 [tool.poetry.dev-dependencies]
 atomicwrites = "*"

share/locale/en.json

@@ -28,6 +28,9 @@
     "gui_copied_url": "OnionShare address copied to clipboard",
     "gui_copied_hidservauth_title": "Copied HidServAuth",
     "gui_copied_hidservauth": "HidServAuth line copied to clipboard",
+    "gui_show_url_qr_code": "Show QR code",
+    "gui_qr_code_dialog_title": "OnionShare QR Code",
+    "gui_qr_code_description": "Scan this QR code with a QR reader, such as the camera on your phone, in order to share it over an application such as Signal.",
     "gui_waiting_to_start": "Scheduled to start in {}. Click to cancel.",
     "gui_please_wait": "Starting… Click to cancel.",
     "error_rate_limit": "Someone has made too many wrong attempts to guess your password, so OnionShare has stopped the server. Start sharing again and send the recipient a new address to share.",

tests/gui_base_test.py

@@ -297,6 +297,17 @@ class GuiBaseTest(unittest.TestCase):
                 f"http://onionshare:{tab.get_mode().server_status.web.password}@127.0.0.1:{tab.app.port}",
             )
 
+    def have_show_qr_code_button(self, tab):
+        """Test that the Show QR Code URL button is shown and that it loads a QR Code Dialog"""
+        self.assertTrue(tab.get_mode().server_status.show_url_qr_code_button.isVisible())
+        def accept_dialog():
+            window = tab.common.gui.qtapp.activeWindow()
+            if window:
+                window.close()
+
+        QtCore.QTimer.singleShot(500, accept_dialog)
+        tab.get_mode().server_status.show_url_qr_code_button.click()
+
     def server_status_indicator_says_started(self, tab):
         """Test that the Server Status indicator shows we are started"""
         if type(tab.get_mode()) == ReceiveMode:

tests/test_gui_receive.py

@@ -112,6 +112,7 @@ class TestReceive(GuiBaseTest):
         self.have_a_password(tab)
         self.url_description_shown(tab)
         self.have_copy_url_button(tab)
+        self.have_show_qr_code_button(tab)
         self.server_status_indicator_says_started(tab)
         self.web_page(tab, "Select the files you want to send, then click")
 

tests/test_gui_share.py

@@ -231,6 +231,7 @@ class TestShare(GuiBaseTest):
         self.have_a_password(tab)
         self.url_description_shown(tab)
         self.have_copy_url_button(tab)
+        self.have_show_qr_code_button(tab)
         self.server_status_indicator_says_started(tab)
 
     def run_all_share_mode_download_tests(self, tab):

tests/test_gui_website.py

@@ -70,6 +70,7 @@ class TestWebsite(GuiBaseTest):
         self.have_a_password(tab)
         self.url_description_shown(tab)
         self.have_copy_url_button(tab)
+        self.have_show_qr_code_button(tab)
         self.server_status_indicator_says_started(tab)
 
     def run_all_website_mode_download_tests(self, tab):