'''
Revealer
Do you have something to hide?
Secret backup plug-in for the electrum wallet.
Tiago Romagnani Silveira, 2017
'''
import os
import random
import qrcode
import traceback
from decimal import Decimal
from PyQt5.QtPrintSupport import QPrinter
from electrum.plugin import hook
from electrum.i18n import _
from electrum.util import make_dir, InvalidPassword, UserCancelled, bh2u, bfh
from electrum.gui.qt.util import *
from electrum.gui.qt.qrtextedit import ScanQRTextEdit
from electrum.gui.qt.main_window import StatusBarButton
from .revealer import RevealerPlugin, VersionedSeed
class Plugin(RevealerPlugin):
MAX_PLAINTEXT_LEN = 189 # chars
def __init__(self, parent, config, name):
RevealerPlugin.__init__(self, parent, config, name)
self.base_dir = os.path.join(config.electrum_path(), 'revealer')
if self.config.get('calibration_h') is None:
self.config.set_key('calibration_h', 0)
if self.config.get('calibration_v') is None:
self.config.set_key('calibration_v', 0)
self.calibration_h = self.config.get('calibration_h')
self.calibration_v = self.config.get('calibration_v')
self.f_size = QSize(1014*2, 642*2)
self.abstand_h = 21
self.abstand_v = 34
self.calibration_noise = int('10' * 128)
self.rawnoise = False
make_dir(self.base_dir)
self.extension = False
@hook
def create_status_bar(self, parent):
b = StatusBarButton(QIcon(':icons/revealer.png'), "Revealer "+_("secret backup utility"),
partial(self.setup_dialog, parent))
parent.addPermanentWidget(b)
def requires_settings(self):
return True
def settings_widget(self, window):
return EnterButton(_('Printer Calibration'), partial(self.calibration_dialog, window))
def password_dialog(self, msg=None, parent=None):
from electrum.gui.qt.password_dialog import PasswordDialog
parent = parent or self
d = PasswordDialog(parent, msg)
return d.run()
def get_seed(self):
password = None
if self.wallet.has_keystore_encryption():
password = self.password_dialog(parent=self.d.parent())
if not password:
raise UserCancelled()
keystore = self.wallet.get_keystore()
if not keystore or not keystore.has_seed():
return
self.extension = bool(keystore.get_passphrase(password))
return keystore.get_seed(password)
def setup_dialog(self, window):
self.wallet = window.parent().wallet
self.update_wallet_name(self.wallet)
self.user_input = False
self.d = WindowModalDialog(window, "Setup Dialog")
self.d.setMinimumWidth(500)
self.d.setMinimumHeight(210)
self.d.setMaximumHeight(320)
self.d.setContentsMargins(11,11,1,1)
self.hbox = QHBoxLayout(self.d)
vbox = QVBoxLayout()
logo = QLabel()
self.hbox.addWidget(logo)
logo.setPixmap(QPixmap(':icons/revealer.png'))
logo.setAlignment(Qt.AlignLeft)
self.hbox.addSpacing(16)
vbox.addWidget(WWLabel(""+_("Revealer Secret Backup Plugin")+"
"
+_("To encrypt your backup, first we need to load some noise.")+"
"))
vbox.addSpacing(7)
bcreate = QPushButton(_("Create a new Revealer"))
bcreate.setMaximumWidth(181)
bcreate.setDefault(True)
vbox.addWidget(bcreate, Qt.AlignCenter)
self.load_noise = ScanQRTextEdit()
self.load_noise.setTabChangesFocus(True)
self.load_noise.textChanged.connect(self.on_edit)
self.load_noise.setMaximumHeight(33)
self.hbox.addLayout(vbox)
vbox.addWidget(WWLabel(_("or type a existing revealer code below and click 'next':")))
vbox.addWidget(self.load_noise)
vbox.addSpacing(3)
self.next_button = QPushButton(_("Next"), self.d)
self.next_button.setEnabled(False)
vbox.addLayout(Buttons(self.next_button))
self.next_button.clicked.connect(self.d.close)
self.next_button.clicked.connect(partial(self.cypherseed_dialog, window))
vbox.addWidget(
QLabel("" + _("Warning") + ": " + _("Each revealer should be used only once.")
+"
"+_("more information at https://revealer.cc/faq")))
def mk_digital():
try:
self.make_digital(self.d)
except Exception:
traceback.print_exc(file=sys.stdout)
else:
self.cypherseed_dialog(window)
bcreate.clicked.connect(mk_digital)
return bool(self.d.exec_())
def get_noise(self):
text = self.load_noise.text()
return ''.join(text.split()).lower()
def on_edit(self):
txt = self.get_noise()
versioned_seed = self.get_versioned_seed_from_user_input(txt)
if versioned_seed:
self.versioned_seed = versioned_seed
self.user_input = bool(versioned_seed)
self.next_button.setEnabled(bool(versioned_seed))
def make_digital(self, dialog):
self.make_rawnoise(True)
self.bdone(dialog)
self.d.close()
def get_path_to_revealer_file(self, ext: str= '') -> str:
version = self.versioned_seed.version
code_id = self.versioned_seed.checksum
filename = self.filename_prefix + version + "_" + code_id + ext
path = os.path.join(self.base_dir, filename)
return os.path.normcase(os.path.abspath(path))
def get_path_to_calibration_file(self):
path = os.path.join(self.base_dir, 'calibration.pdf')
return os.path.normcase(os.path.abspath(path))
def bcrypt(self, dialog):
self.rawnoise = False
version = self.versioned_seed.version
code_id = self.versioned_seed.checksum
dialog.show_message(''.join([_("{} encrypted for Revealer {}_{} saved as PNG and PDF at: ").format(self.was, version, code_id),
"", self.get_path_to_revealer_file(), "", "
",
"
", "", _("Always check you backups.")]))
dialog.close()
def ext_warning(self, dialog):
dialog.show_message(''.join(["",_("Warning"), ": ",
_("your seed extension will not be included in the encrypted backup.")]))
dialog.close()
def bdone(self, dialog):
version = self.versioned_seed.version
code_id = self.versioned_seed.checksum
dialog.show_message(''.join([_("Digital Revealer ({}_{}) saved as PNG and PDF at:").format(version, code_id),
"
","", self.get_path_to_revealer_file(), '']))
def customtxt_limits(self):
txt = self.text.text()
self.max_chars.setVisible(False)
self.char_count.setText(f"({len(txt)}/{self.MAX_PLAINTEXT_LEN})")
if len(txt)>0:
self.ctext.setEnabled(True)
if len(txt) > self.MAX_PLAINTEXT_LEN:
self.text.setPlainText(txt[:self.MAX_PLAINTEXT_LEN])
self.max_chars.setVisible(True)
def t(self):
self.txt = self.text.text()
self.seed_img(is_seed=False)
def cypherseed_dialog(self, window):
d = WindowModalDialog(window, "Encryption Dialog")
d.setMinimumWidth(500)
d.setMinimumHeight(210)
d.setMaximumHeight(450)
d.setContentsMargins(11, 11, 1, 1)
self.c_dialog = d
hbox = QHBoxLayout(d)
self.vbox = QVBoxLayout()
logo = QLabel()
hbox.addWidget(logo)
logo.setPixmap(QPixmap(':icons/revealer.png'))
logo.setAlignment(Qt.AlignLeft)
hbox.addSpacing(16)
self.vbox.addWidget(WWLabel("" + _("Revealer Secret Backup Plugin") + "
"
+ _("Ready to encrypt for revealer {}")
.format(self.versioned_seed.version+'_'+self.versioned_seed.checksum)))
self.vbox.addSpacing(11)
hbox.addLayout(self.vbox)
grid = QGridLayout()
self.vbox.addLayout(grid)
cprint = QPushButton(_("Encrypt {}'s seed").format(self.wallet_name))
cprint.setMaximumWidth(250)
cprint.clicked.connect(partial(self.seed_img, True))
self.vbox.addWidget(cprint)
self.vbox.addSpacing(1)
self.vbox.addWidget(WWLabel(""+_("OR")+" "+_("type a custom alphanumerical secret below:")))
self.text = ScanQRTextEdit()
self.text.setTabChangesFocus(True)
self.text.setMaximumHeight(70)
self.text.textChanged.connect(self.customtxt_limits)
self.vbox.addWidget(self.text)
self.char_count = WWLabel("")
self.char_count.setAlignment(Qt.AlignRight)
self.vbox.addWidget(self.char_count)
self.max_chars = WWLabel(""
+ _("This version supports a maximum of {} characters.").format(self.MAX_PLAINTEXT_LEN)
+"")
self.vbox.addWidget(self.max_chars)
self.max_chars.setVisible(False)
self.ctext = QPushButton(_("Encrypt custom secret"))
self.ctext.clicked.connect(self.t)
self.vbox.addWidget(self.ctext)
self.ctext.setEnabled(False)
self.vbox.addSpacing(11)
self.vbox.addLayout(Buttons(CloseButton(d)))
return bool(d.exec_())
def update_wallet_name(self, name):
self.wallet_name = str(name)
def seed_img(self, is_seed = True):
if is_seed:
try:
cseed = self.get_seed()
except UserCancelled:
return
except InvalidPassword as e:
self.d.show_error(str(e))
return
if not cseed:
self.d.show_message(_("This wallet has no seed"))
return
txt = cseed.upper()
else:
txt = self.txt.upper()
img = QImage(self.SIZE[0], self.SIZE[1], QImage.Format_Mono)
bitmap = QBitmap.fromImage(img, Qt.MonoOnly)
bitmap.fill(Qt.white)
painter = QPainter()
painter.begin(bitmap)
QFontDatabase.addApplicationFont(os.path.join(os.path.dirname(__file__), 'SourceSansPro-Bold.otf') )
if len(txt) < 102 :
fontsize = 15
linespace = 15
max_letters = 17
max_lines = 6
max_words = 3
else:
fontsize = 12
linespace = 10
max_letters = 21
max_lines = 9
max_words = int(max_letters/4)
font = QFont('Source Sans Pro', fontsize, QFont.Bold)
font.setLetterSpacing(QFont.PercentageSpacing, 100)
font.setPixelSize(fontsize)
painter.setFont(font)
seed_array = txt.split(' ')
for n in range(max_lines):
nwords = max_words
temp_seed = seed_array[:nwords]
while len(' '.join(map(str, temp_seed))) > max_letters:
nwords = nwords - 1
temp_seed = seed_array[:nwords]
painter.drawText(QRect(0, linespace*n , self.SIZE[0], self.SIZE[1]), Qt.AlignHCenter, ' '.join(map(str, temp_seed)))
del seed_array[:nwords]
painter.end()
img = bitmap.toImage()
if (self.rawnoise == False):
self.make_rawnoise()
self.make_cypherseed(img, self.rawnoise, False, is_seed)
return img
def make_rawnoise(self, create_revealer=False):
if not self.user_input:
version = self.LATEST_VERSION
hex_seed = bh2u(os.urandom(16))
checksum = self.code_hashid(version + hex_seed)
self.versioned_seed = VersionedSeed(version=version.upper(),
seed=hex_seed.upper(),
checksum=checksum.upper())
assert self.versioned_seed
w, h = self.SIZE
rawnoise = QImage(w, h, QImage.Format_Mono)
noise_map = self.get_noise_map(self.versioned_seed)
for (x,y), pixel in noise_map.items():
rawnoise.setPixel(x, y, pixel)
self.rawnoise = rawnoise
if create_revealer:
self.make_revealer()
def make_calnoise(self):
random.seed(self.calibration_noise)
w, h = self.SIZE
rawnoise = QImage(w, h, QImage.Format_Mono)
for x in range(w):
for y in range(h):
rawnoise.setPixel(x,y,random.randint(0, 1))
self.calnoise = self.pixelcode_2x2(rawnoise)
def make_revealer(self):
revealer = self.pixelcode_2x2(self.rawnoise)
revealer.invertPixels()
revealer = QBitmap.fromImage(revealer)
revealer = revealer.scaled(self.f_size, Qt.KeepAspectRatio)
revealer = self.overlay_marks(revealer)
self.filename_prefix = 'revealer_'
revealer.save(self.get_path_to_revealer_file('.png'))
self.toPdf(QImage(revealer))
QDesktopServices.openUrl(QUrl.fromLocalFile(self.get_path_to_revealer_file('.pdf')))
def make_cypherseed(self, img, rawnoise, calibration=False, is_seed = True):
img = img.convertToFormat(QImage.Format_Mono)
p = QPainter()
p.begin(img)
p.setCompositionMode(26) #xor
p.drawImage(0, 0, rawnoise)
p.end()
cypherseed = self.pixelcode_2x2(img)
cypherseed = QBitmap.fromImage(cypherseed)
cypherseed = cypherseed.scaled(self.f_size, Qt.KeepAspectRatio)
cypherseed = self.overlay_marks(cypherseed, True, calibration)
if not is_seed:
self.filename_prefix = 'custom_secret_'
self.was = _('Custom secret')
else:
self.filename_prefix = self.wallet_name + '_seed_'
self.was = self.wallet_name + ' ' + _('seed')
if self.extension:
self.ext_warning(self.c_dialog)
if not calibration:
self.toPdf(QImage(cypherseed))
QDesktopServices.openUrl(QUrl.fromLocalFile(self.get_path_to_revealer_file('.pdf')))
cypherseed.save(self.get_path_to_revealer_file('.png'))
self.bcrypt(self.c_dialog)
return cypherseed
def calibration(self):
img = QImage(self.SIZE[0], self.SIZE[1], QImage.Format_Mono)
bitmap = QBitmap.fromImage(img, Qt.MonoOnly)
bitmap.fill(Qt.black)
self.make_calnoise()
img = self.overlay_marks(self.calnoise.scaledToHeight(self.f_size.height()), False, True)
self.calibration_pdf(img)
QDesktopServices.openUrl(QUrl.fromLocalFile(self.get_path_to_calibration_file()))
return img
def toPdf(self, image):
printer = QPrinter()
printer.setPaperSize(QSizeF(210, 297), QPrinter.Millimeter)
printer.setResolution(600)
printer.setOutputFormat(QPrinter.PdfFormat)
printer.setOutputFileName(self.get_path_to_revealer_file('.pdf'))
printer.setPageMargins(0,0,0,0,6)
painter = QPainter()
painter.begin(printer)
delta_h = round(image.width()/self.abstand_v)
delta_v = round(image.height()/self.abstand_h)
size_h = 2028+((int(self.calibration_h)*2028/(2028-(delta_h*2)+int(self.calibration_h)))/2)
size_v = 1284+((int(self.calibration_v)*1284/(1284-(delta_v*2)+int(self.calibration_v)))/2)
image = image.scaled(size_h, size_v)
painter.drawImage(553,533, image)
wpath = QPainterPath()
wpath.addRoundedRect(QRectF(553,533, size_h, size_v), 19, 19)
painter.setPen(QPen(Qt.black, 1))
painter.drawPath(wpath)
painter.end()
def calibration_pdf(self, image):
printer = QPrinter()
printer.setPaperSize(QSizeF(210, 297), QPrinter.Millimeter)
printer.setResolution(600)
printer.setOutputFormat(QPrinter.PdfFormat)
printer.setOutputFileName(self.get_path_to_calibration_file())
printer.setPageMargins(0,0,0,0,6)
painter = QPainter()
painter.begin(printer)
painter.drawImage(553,533, image)
font = QFont('Source Sans Pro', 10, QFont.Bold)
painter.setFont(font)
painter.drawText(254,277, _("Calibration sheet"))
font = QFont('Source Sans Pro', 7, QFont.Bold)
painter.setFont(font)
painter.drawText(600,2077, _("Instructions:"))
font = QFont('Source Sans Pro', 7, QFont.Normal)
painter.setFont(font)
painter.drawText(700, 2177, _("1. Place this paper on a flat and well iluminated surface."))
painter.drawText(700, 2277, _("2. Align your Revealer borderlines to the dashed lines on the top and left."))
painter.drawText(700, 2377, _("3. Press slightly the Revealer against the paper and read the numbers that best "
"match on the opposite sides. "))
painter.drawText(700, 2477, _("4. Type the numbers in the software"))
painter.end()
def pixelcode_2x2(self, img):
result = QImage(img.width()*2, img.height()*2, QImage.Format_ARGB32 )
white = qRgba(255,255,255,0)
black = qRgba(0,0,0,255)
for x in range(img.width()):
for y in range(img.height()):
c = img.pixel(QPoint(x,y))
colors = QColor(c).getRgbF()
if colors[0]:
result.setPixel(x*2+1,y*2+1, black)
result.setPixel(x*2,y*2+1, white)
result.setPixel(x*2+1,y*2, white)
result.setPixel(x*2, y*2, black)
else:
result.setPixel(x*2+1,y*2+1, white)
result.setPixel(x*2,y*2+1, black)
result.setPixel(x*2+1,y*2, black)
result.setPixel(x*2, y*2, white)
return result
def overlay_marks(self, img, is_cseed=False, calibration_sheet=False):
border_color = Qt.white
base_img = QImage(self.f_size.width(),self.f_size.height(), QImage.Format_ARGB32)
base_img.fill(border_color)
img = QImage(img)
painter = QPainter()
painter.begin(base_img)
total_distance_h = round(base_img.width() / self.abstand_v)
dist_v = round(total_distance_h) / 2
dist_h = round(total_distance_h) / 2
img = img.scaledToWidth(base_img.width() - (2 * (total_distance_h)))
painter.drawImage(total_distance_h,
total_distance_h,
img)
#frame around image
pen = QPen(Qt.black, 2)
painter.setPen(pen)
#horz
painter.drawLine(0, total_distance_h, base_img.width(), total_distance_h)
painter.drawLine(0, base_img.height()-(total_distance_h), base_img.width(), base_img.height()-(total_distance_h))
#vert
painter.drawLine(total_distance_h, 0, total_distance_h, base_img.height())
painter.drawLine(base_img.width()-(total_distance_h), 0, base_img.width()-(total_distance_h), base_img.height())
#border around img
border_thick = 6
Rpath = QPainterPath()
Rpath.addRect(QRectF((total_distance_h)+(border_thick/2),
(total_distance_h)+(border_thick/2),
base_img.width()-((total_distance_h)*2)-((border_thick)-1),
(base_img.height()-((total_distance_h))*2)-((border_thick)-1)))
pen = QPen(Qt.black, border_thick)
pen.setJoinStyle (Qt.MiterJoin)
painter.setPen(pen)
painter.drawPath(Rpath)
Bpath = QPainterPath()
Bpath.addRect(QRectF((total_distance_h), (total_distance_h),
base_img.width()-((total_distance_h)*2), (base_img.height()-((total_distance_h))*2)))
pen = QPen(Qt.black, 1)
painter.setPen(pen)
painter.drawPath(Bpath)
pen = QPen(Qt.black, 1)
painter.setPen(pen)
painter.drawLine(0, base_img.height()/2, total_distance_h, base_img.height()/2)
painter.drawLine(base_img.width()/2, 0, base_img.width()/2, total_distance_h)
painter.drawLine(base_img.width()-total_distance_h, base_img.height()/2, base_img.width(), base_img.height()/2)
painter.drawLine(base_img.width()/2, base_img.height(), base_img.width()/2, base_img.height() - total_distance_h)
#print code
f_size = 37
QFontDatabase.addApplicationFont(os.path.join(os.path.dirname(__file__), 'DejaVuSansMono-Bold.ttf'))
font = QFont("DejaVu Sans Mono", f_size-11, QFont.Bold)
font.setPixelSize(35)
painter.setFont(font)
if not calibration_sheet:
if is_cseed: #its a secret
painter.setPen(QPen(Qt.black, 1, Qt.DashDotDotLine))
painter.drawLine(0, dist_v, base_img.width(), dist_v)
painter.drawLine(dist_h, 0, dist_h, base_img.height())
painter.drawLine(0, base_img.height()-dist_v, base_img.width(), base_img.height()-(dist_v))
painter.drawLine(base_img.width()-(dist_h), 0, base_img.width()-(dist_h), base_img.height())
painter.drawImage(((total_distance_h))+11, ((total_distance_h))+11,
QImage(':icons/electrumb.png').scaledToWidth(2.1*(total_distance_h), Qt.SmoothTransformation))
painter.setPen(QPen(Qt.white, border_thick*8))
painter.drawLine(base_img.width()-((total_distance_h))-(border_thick*8)/2-(border_thick/2)-2,
(base_img.height()-((total_distance_h)))-((border_thick*8)/2)-(border_thick/2)-2,
base_img.width()-((total_distance_h))-(border_thick*8)/2-(border_thick/2)-2 - 77,
(base_img.height()-((total_distance_h)))-((border_thick*8)/2)-(border_thick/2)-2)
painter.setPen(QColor(0,0,0,255))
painter.drawText(QRect(0, base_img.height()-107, base_img.width()-total_distance_h - border_thick - 11,
base_img.height()-total_distance_h - border_thick), Qt.AlignRight,
self.versioned_seed.version + '_'+self.versioned_seed.checksum)
painter.end()
else: # revealer
painter.setPen(QPen(border_color, 17))
painter.drawLine(0, dist_v, base_img.width(), dist_v)
painter.drawLine(dist_h, 0, dist_h, base_img.height())
painter.drawLine(0, base_img.height()-dist_v, base_img.width(), base_img.height()-(dist_v))
painter.drawLine(base_img.width()-(dist_h), 0, base_img.width()-(dist_h), base_img.height())
painter.setPen(QPen(Qt.black, 2))
painter.drawLine(0, dist_v, base_img.width(), dist_v)
painter.drawLine(dist_h, 0, dist_h, base_img.height())
painter.drawLine(0, base_img.height()-dist_v, base_img.width(), base_img.height()-(dist_v))
painter.drawLine(base_img.width()-(dist_h), 0, base_img.width()-(dist_h), base_img.height())
logo = QImage(':icons/revealer_c.png').scaledToWidth(1.3*(total_distance_h))
painter.drawImage((total_distance_h)+ (border_thick), ((total_distance_h))+ (border_thick), logo, Qt.SmoothTransformation)
#frame around logo
painter.setPen(QPen(Qt.black, border_thick))
painter.drawLine(total_distance_h+border_thick, total_distance_h+logo.height()+3*(border_thick/2),
total_distance_h+logo.width()+border_thick, total_distance_h+logo.height()+3*(border_thick/2))
painter.drawLine(logo.width()+total_distance_h+3*(border_thick/2), total_distance_h+(border_thick),
total_distance_h+logo.width()+3*(border_thick/2), total_distance_h+logo.height()+(border_thick))
#frame around code/qr
qr_size = 179
painter.drawLine((base_img.width()-((total_distance_h))-(border_thick/2)-2)-qr_size,
(base_img.height()-((total_distance_h)))-((border_thick*8))-(border_thick/2)-2,
(base_img.width()/2+(total_distance_h/2)-border_thick-(border_thick*8)/2)-qr_size,
(base_img.height()-((total_distance_h)))-((border_thick*8))-(border_thick/2)-2)
painter.drawLine((base_img.width()/2+(total_distance_h/2)-border_thick-(border_thick*8)/2)-qr_size,
(base_img.height()-((total_distance_h)))-((border_thick*8))-(border_thick/2)-2,
base_img.width()/2 + (total_distance_h/2)-border_thick-(border_thick*8)/2-qr_size,
((base_img.height()-((total_distance_h)))-(border_thick/2)-2))
painter.setPen(QPen(Qt.white, border_thick * 8))
painter.drawLine(
base_img.width() - ((total_distance_h)) - (border_thick * 8) / 2 - (border_thick / 2) - 2,
(base_img.height() - ((total_distance_h))) - ((border_thick * 8) / 2) - (border_thick / 2) - 2,
base_img.width() / 2 + (total_distance_h / 2) - border_thick - qr_size,
(base_img.height() - ((total_distance_h))) - ((border_thick * 8) / 2) - (border_thick / 2) - 2)
painter.setPen(QColor(0,0,0,255))
painter.drawText(QRect(((base_img.width()/2) +21)-qr_size, base_img.height()-107,
base_img.width()-total_distance_h - border_thick -93,
base_img.height()-total_distance_h - border_thick), Qt.AlignLeft, self.versioned_seed.get_ui_string_version_plus_seed())
painter.drawText(QRect(0, base_img.height()-107, base_img.width()-total_distance_h - border_thick -3 -qr_size,
base_img.height()-total_distance_h - border_thick), Qt.AlignRight, self.versioned_seed.checksum)
# draw qr code
qr_qt = self.paintQR(self.versioned_seed.get_ui_string_version_plus_seed()
+ self.versioned_seed.checksum)
target = QRectF(base_img.width()-65-qr_size,
base_img.height()-65-qr_size,
qr_size, qr_size )
painter.drawImage(target, qr_qt)
painter.setPen(QPen(Qt.black, 4))
painter.drawLine(base_img.width()-65-qr_size,
base_img.height()-65-qr_size,
base_img.width() - 65 - qr_size,
(base_img.height() - ((total_distance_h))) - ((border_thick * 8)) - (border_thick / 2) - 4
)
painter.drawLine(base_img.width()-65-qr_size,
base_img.height()-65-qr_size,
base_img.width() - 65,
base_img.height()-65-qr_size
)
painter.end()
else: # calibration only
painter.end()
cal_img = QImage(self.f_size.width() + 100, self.f_size.height() + 100,
QImage.Format_ARGB32)
cal_img.fill(Qt.white)
cal_painter = QPainter()
cal_painter.begin(cal_img)
cal_painter.drawImage(0,0, base_img)
#black lines in the middle of border top left only
cal_painter.setPen(QPen(Qt.black, 1, Qt.DashDotDotLine))
cal_painter.drawLine(0, dist_v, base_img.width(), dist_v)
cal_painter.drawLine(dist_h, 0, dist_h, base_img.height())
pen = QPen(Qt.black, 2, Qt.DashDotDotLine)
cal_painter.setPen(pen)
n=15
cal_painter.setFont(QFont("DejaVu Sans Mono", 21, QFont.Bold))
for x in range(-n,n):
#lines on bottom (vertical calibration)
cal_painter.drawLine((((base_img.width())/(n*2)) *(x))+ (base_img.width()/2)-13,
x+2+base_img.height()-(dist_v),
(((base_img.width())/(n*2)) *(x))+ (base_img.width()/2)+13,
x+2+base_img.height()-(dist_v))
num_pos = 9
if x > 9 : num_pos = 17
if x < 0 : num_pos = 20
if x < -9: num_pos = 27
cal_painter.drawText((((base_img.width())/(n*2)) *(x))+ (base_img.width()/2)-num_pos,
50+base_img.height()-(dist_v),
str(x))
#lines on the right (horizontal calibrations)
cal_painter.drawLine(x+2+(base_img.width()-(dist_h)),
((base_img.height()/(2*n)) *(x))+ (base_img.height()/n)+(base_img.height()/2)-13,
x+2+(base_img.width()-(dist_h)),
((base_img.height()/(2*n)) *(x))+ (base_img.height()/n)+(base_img.height()/2)+13)
cal_painter.drawText(30+(base_img.width()-(dist_h)),
((base_img.height()/(2*n)) *(x))+ (base_img.height()/2)+13, str(x))
cal_painter.end()
base_img = cal_img
return base_img
def paintQR(self, data):
if not data:
return
qr = qrcode.QRCode()
qr.add_data(data)
matrix = qr.get_matrix()
k = len(matrix)
border_color = Qt.white
base_img = QImage(k * 5, k * 5, QImage.Format_ARGB32)
base_img.fill(border_color)
qrpainter = QPainter()
qrpainter.begin(base_img)
boxsize = 5
size = k * boxsize
left = (base_img.width() - size)/2
top = (base_img.height() - size)/2
qrpainter.setBrush(Qt.black)
qrpainter.setPen(Qt.black)
for r in range(k):
for c in range(k):
if matrix[r][c]:
qrpainter.drawRect(left+c*boxsize, top+r*boxsize, boxsize - 1, boxsize - 1)
qrpainter.end()
return base_img
def calibration_dialog(self, window):
d = WindowModalDialog(window, _("Revealer - Printer calibration settings"))
d.setMinimumSize(100, 200)
vbox = QVBoxLayout(d)
vbox.addWidget(QLabel(''.join(["
", _("If you have an old printer, or want optimal precision"),"
",
_("print the calibration pdf and follow the instructions "), "
","
",
])))
self.calibration_h = self.config.get('calibration_h')
self.calibration_v = self.config.get('calibration_v')
cprint = QPushButton(_("Open calibration pdf"))
cprint.clicked.connect(self.calibration)
vbox.addWidget(cprint)
vbox.addWidget(QLabel(_('Calibration values:')))
grid = QGridLayout()
vbox.addLayout(grid)
grid.addWidget(QLabel(_('Right side')), 0, 0)
horizontal = QLineEdit()
horizontal.setText(str(self.calibration_h))
grid.addWidget(horizontal, 0, 1)
grid.addWidget(QLabel(_('Bottom')), 1, 0)
vertical = QLineEdit()
vertical.setText(str(self.calibration_v))
grid.addWidget(vertical, 1, 1)
vbox.addStretch()
vbox.addSpacing(13)
vbox.addLayout(Buttons(CloseButton(d), OkButton(d)))
if not d.exec_():
return
self.calibration_h = int(Decimal(horizontal.text()))
self.config.set_key('calibration_h', self.calibration_h)
self.calibration_v = int(Decimal(vertical.text()))
self.config.set_key('calibration_v', self.calibration_v)