134 lines
3.6 KiB
Python
134 lines
3.6 KiB
Python
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from PyQt5.QtCore import *
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from PyQt5.QtGui import *
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import PyQt5.QtGui as QtGui
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from PyQt5.QtWidgets import (
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QApplication, QVBoxLayout, QTextEdit, QHBoxLayout, QPushButton, QWidget)
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import os
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import qrcode
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import electrum_bitcoinprivate
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from electrum_bitcoinprivate.i18n import _
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from .util import WindowModalDialog
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class QRCodeWidget(QWidget):
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def __init__(self, data = None, fixedSize=False):
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QWidget.__init__(self)
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self.data = None
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self.qr = None
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self.fixedSize=fixedSize
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if fixedSize:
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self.setFixedSize(fixedSize, fixedSize)
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self.setData(data)
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def setData(self, data):
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if self.data != data:
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self.data = data
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if self.data:
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self.qr = qrcode.QRCode()
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self.qr.add_data(self.data)
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if not self.fixedSize:
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k = len(self.qr.get_matrix())
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self.setMinimumSize(k*5,k*5)
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else:
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self.qr = None
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self.update()
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def paintEvent(self, e):
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if not self.data:
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return
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black = QColor(0, 0, 0, 255)
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white = QColor(255, 255, 255, 255)
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if not self.qr:
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qp = QtGui.QPainter()
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qp.begin(self)
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qp.setBrush(white)
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qp.setPen(white)
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r = qp.viewport()
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qp.drawRect(0, 0, r.width(), r.height())
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qp.end()
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return
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matrix = self.qr.get_matrix()
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k = len(matrix)
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qp = QtGui.QPainter()
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qp.begin(self)
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r = qp.viewport()
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margin = 10
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framesize = min(r.width(), r.height())
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boxsize = int( (framesize - 2*margin)/k )
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size = k*boxsize
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left = (r.width() - size)/2
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top = (r.height() - size)/2
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# Make a white margin around the QR in case of dark theme use
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qp.setBrush(white)
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qp.setPen(white)
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qp.drawRect(left-margin, top-margin, size+(margin*2), size+(margin*2))
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qp.setBrush(black)
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qp.setPen(black)
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for r in range(k):
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for c in range(k):
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if matrix[r][c]:
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qp.drawRect(left+c*boxsize, top+r*boxsize, boxsize - 1, boxsize - 1)
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qp.end()
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class QRDialog(WindowModalDialog):
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def __init__(self, data, parent=None, title = "", show_text=False):
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WindowModalDialog.__init__(self, parent, title)
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vbox = QVBoxLayout()
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qrw = QRCodeWidget(data)
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qscreen = QApplication.primaryScreen()
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vbox.addWidget(qrw, 1)
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if show_text:
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text = QTextEdit()
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text.setText(data)
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text.setReadOnly(True)
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vbox.addWidget(text)
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hbox = QHBoxLayout()
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hbox.addStretch(1)
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config = electrum_bitcoinprivate.get_config()
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if config:
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filename = os.path.join(config.path, "qrcode.png")
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def print_qr():
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p = qscreen.grabWindow(qrw.winId())
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p.save(filename, 'png')
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self.show_message(_("QR code saved to file") + " " + filename)
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def copy_to_clipboard():
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p = qscreen.grabWindow(qrw.winId())
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QApplication.clipboard().setPixmap(p)
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self.show_message(_("QR code copied to clipboard"))
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b = QPushButton(_("Copy"))
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hbox.addWidget(b)
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b.clicked.connect(copy_to_clipboard)
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b = QPushButton(_("Save"))
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hbox.addWidget(b)
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b.clicked.connect(print_qr)
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b = QPushButton(_("Close"))
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hbox.addWidget(b)
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b.clicked.connect(self.accept)
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b.setDefault(True)
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vbox.addLayout(hbox)
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self.setLayout(vbox)
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