I was trying to make a lock screen for Xfce and gnome using QML and python PyQt5.
main.qml
import QtQuick 2.12
import QtQuick.Controls 2.12
import QtQuick.Window 2.12
import QtGraphicalEffects 1.0
ApplicationWindow {
property var enter: 0
id: window
objectName: "popup"
width: Screen.width
height: Screen.height
color: "#b3000000"
visible: true
visibility: Window.FullScreen
flags: Qt.WindowStaysOnTopHint
Timer{
signal entered
objectName: 'timer'
repeat: true
running: true
interval: 10
onTriggered: {
if(enter === 1 ){
enter = 0
entered()
}
}
}
Item {
id: element1
x: 474
y: 302
width: 418
height: 328
anchors.verticalCenter: parent.verticalCenter
anchors.horizontalCenter: parent.horizontalCenter
RoundButton {
id: roundButton
clip: true
anchors.top: parent.top
anchors.topMargin: 72
anchors.bottom: parent.bottom
anchors.bottomMargin: 106
anchors.left: parent.left
anchors.leftMargin: 134
anchors.right: parent.right
anchors.rightMargin: 134
background: Rectangle{
anchors.fill: parent
color: "white"
radius: parent.radius
}
Image {
id: image
anchors.fill: parent
objectName: 'image'
fillMode: Image.PreserveAspectCrop
source: "qrc:/qtquickplugin/images/template_image.png"
layer.enabled: true
layer.effect: OpacityMask {
maskSource: parent
}
}
}
Text {
objectName: 'text'
id: element2
color: "#f9f9f9"
text: qsTr("User Name")
anchors.top: parent.top
anchors.topMargin: 6
anchors.bottom: parent.bottom
anchors.bottomMargin: 275
anchors.left: parent.left
anchors.leftMargin: 170
anchors.right: parent.right
anchors.rightMargin: 170
verticalAlignment: Text.AlignVCenter
horizontalAlignment: Text.AlignHCenter
font.pixelSize: 24
}
Item {
id: element
anchors.top: parent.top
anchors.topMargin: 247
anchors.bottom: parent.bottom
anchors.bottomMargin: 18
anchors.left: parent.left
anchors.leftMargin: 0
anchors.right: parent.right
anchors.rightMargin: 0
Rectangle {
id: rectangle
color: "#ffffff"
radius: 21
anchors.top: parent.top
anchors.topMargin: 11
anchors.bottom: parent.bottom
anchors.bottomMargin: 10
anchors.left: parent.left
anchors.leftMargin: 8
anchors.right: parent.right
anchors.rightMargin: 118
clip: true
TextInput {
id: textInput
anchors.fill: parent
cursorVisible: true
clip: true
focus: true
Keys.onPressed: {
if (event.key === Qt.Key_Return){
enter = 1
}
if (event.key === Qt.Key_){
console.log('anythong')
}
}
objectName: 'input'
horizontalAlignment: Text.AlignHCenter
verticalAlignment: Text.AlignVCenter
font.pixelSize: 12
}
}
Button {
id: button1
objectName: 'button'
text: qsTr("Button")
anchors.top: parent.top
anchors.topMargin: 12
anchors.bottom: parent.bottom
anchors.bottomMargin: 11
anchors.left: parent.left
anchors.leftMargin: 308
anchors.right: parent.right
anchors.rightMargin: 10
}
}
}
}
main.py
import sys
from PyQt5 import QtCore, QtGui, QtQml
from PyQt5.QtCore import QObject, QUrl
from PyQt5.QtWidgets import QApplication
from PyQt5.QtQuick import QQuickView
from PyQt5.QtQml import QQmlApplicationEngine
from threading import Thread
import os
import importlib
import subprocess
import tempfile
import re
import random
import os.path
from os import path
dir_path = os.path.dirname(os.path.realpath(__file__))
if __name__ == '__main__':
myApp = QApplication(sys.argv)
engine = QQmlApplicationEngine()
context = engine.rootContext()
context.setContextProperty("main", engine)
engine.load('main.qml')
win = engine.rootObjects()[0]
button = win.findChild(QObject, "button")
password = win.findChild(QObject, 'input')
text = win.findChild(QObject, 'text')
timer = win.findChild(QObject, 'timer')
image = win.findChild(QObject, 'image')
def imgFunction():
a = os.popen('echo $USER').readlines()
def convert(a):
new = ""
for x in a:
new += x
return new
str1 = convert(a)
username = str1.replace('\n','')
with open('/var/lib/AccountsService/users/'+username, 'r') as file:
raw = file.readlines()
for line in raw :
if re.search(r'^Icon=', line):
imgLocation = line.replace('Icon=', "")
imgLocation = imgLocation.replace(' ', '')
imgLocation = imgLocation.replace('\n', '')
url = QtCore.QUrl.fromLocalFile(os.path.join(dir_path, imgLocation))
if str(path.exists(imgLocation)) == 'True':
image.setProperty('source', url)
else:
image.setProperty('source', 'windows-10-user-account-login-icon.png')
def printFunction():
a = password.property('text')
f= open("bash","w+")
f.write("#! /bin/bash\nPASSWD='"+a+"'\nsudo -k\nif sudo -lS &> /dev/null << EOF\n$PASSWD\nEOF\nthen\n echo 'Correct password.'\nelse \n echo 'Wrong password.'\nfi")
f.close()
a = os.popen('bash ./bash').readlines()
def convert(a):
new = ""
for x in a:
new += x
return new
str1 = convert(a)
check = str1.replace('\n','')
if 'Correct password.' in check:
win.close()
else:
text.setProperty('text', 'Wrong')
password.setProperty('text', "")
imgFunction()
button.clicked.connect(printFunction)
timer.entered.connect(printFunction)
win.showFullScreen()
sys.exit(myApp.exec_())
I am having a lot of problems that can destroy lock screen while running without entering password. Keyboard shortcuts can destroy the lock screen easily. I have tried Qt.Popup flag but it is not working with TextInput(maybe a bug). How to get rid of these keyboard shortcuts.
If am I doing wrong wich guide will you suggest for a lock screen development for ubuntu.
0 Answers