From 79eb790e2726fb6e303c09333cd6bd80fc492a83 Mon Sep 17 00:00:00 2001
From: Kristaps Kaupe <kristaps@blogiem.lv>
Date: Sat, 27 Apr 2019 23:33:37 +0300
Subject: [PATCH] Add QR code support to the GUI

---
 docs/INSTALL.md          |  1 +
 install.sh               |  1 +
 scripts/joinmarket-qt.py | 28 +++++++++++++++++++++++++++-
 3 files changed, 29 insertions(+), 1 deletion(-)

diff --git a/docs/INSTALL.md b/docs/INSTALL.md
index 8b7ad34..5efdd15 100644
--- a/docs/INSTALL.md
+++ b/docs/INSTALL.md
@@ -89,6 +89,7 @@ command line scripts as explained in the [scripts README](https://github.com/Ada
 6) Setup joinmarket-qt
     ```
     pip install PySide2
+    pip install qrcode[pil]
     pip install https://github.com/sunu/qt5reactor/archive/58410aaead2185e9917ae9cac9c50fe7b70e4a60.zip
     python setupall.py --all
     ```
diff --git a/install.sh b/install.sh
index b4acaed..400f5c1 100755
--- a/install.sh
+++ b/install.sh
@@ -427,6 +427,7 @@ qt_deps_install ()
 {
     pip install \
         PySide2 \
+        qrcode[pil] \
         https://github.com/sunu/qt5reactor/archive/58410aaead2185e9917ae9cac9c50fe7b70e4a60.zip
 
     return "$?"
diff --git a/scripts/joinmarket-qt.py b/scripts/joinmarket-qt.py
index f4f538e..c94c749 100644
--- a/scripts/joinmarket-qt.py
+++ b/scripts/joinmarket-qt.py
@@ -25,7 +25,7 @@ Some widgets copied and modified from https://github.com/spesmilo/electrum
 
 import sys, datetime, os, logging
 import platform, json, threading, time
-
+import qrcode
 
 from decimal import Decimal
 from PySide2 import QtCore
@@ -34,6 +34,8 @@ from PySide2.QtGui import *
 
 from PySide2.QtWidgets import *
 
+from PIL.ImageQt import ImageQt
+
 if platform.system() == 'Windows':
     MONOSPACE_FONT = 'Lucida Console'
 elif platform.system() == 'Darwin':
@@ -1101,6 +1103,24 @@ class CoinsTab(QWidget):
                        lambda: app.clipboard().setText(txid))
         menu.exec_(self.cTW.viewport().mapToGlobal(position))
 
+class BitcoinQRCodePopup(QDialog):
+
+    def __init__(self, parent, address):
+        super(BitcoinQRCodePopup, self).__init__(parent)
+        self.address = address
+        self.setWindowTitle(address)
+        img = qrcode.make('bitcoin:' + address)
+        self.imageLabel = QLabel()
+        self.imageLabel.setPixmap(QPixmap.fromImage(ImageQt(img)))
+        layout = QVBoxLayout()
+        layout.addWidget(self.imageLabel)
+        self.setLayout(layout)
+        self.initUI()
+
+    def initUI(self):
+        self.show()
+
+
 class JMWalletTab(QWidget):
 
     def __init__(self):
@@ -1152,6 +1172,8 @@ class JMWalletTab(QWidget):
         if address_valid:
             menu.addAction("Copy address to clipboard",
                            lambda: app.clipboard().setText(txt))
+            menu.addAction("Show QR code",
+                           lambda: self.openQRCodePopup(txt))
         if xpub_exists:
             menu.addAction("Copy extended pubkey to clipboard",
                            lambda: app.clipboard().setText(xpub))
@@ -1160,6 +1182,10 @@ class JMWalletTab(QWidget):
         #TODO add more items to context menu
         menu.exec_(self.walletTree.viewport().mapToGlobal(position))
 
+    def openQRCodePopup(self, address):
+        popup = BitcoinQRCodePopup(self, address)
+        popup.show()
+
     def updateWalletInfo(self, walletinfo=None):
         l = self.walletTree
         l.clear()