import sys

import menu as menu
from PyQt5.QtWidgets import *
from PyQt5.QtGui import *
from PyQt5.QtCore import *

from modul1 import DateDialog


class MainWnd(QMainWindow,QObject):
    def __init__(self):
        super().__init__()
        self.initUI()

    def initUI(self):

        self.setWindowTitle("Kolo")
        self.titleDialog1 = ModelessInput(self)
        self.titleDialog1.changed.connect(self.changeTitle)

        self.titleDialog2 = DateDialog(self)

        menu = QMenuBar()
        dialogMenu = menu.addMenu('Dialog')

        self.actionOpen = QAction('Kolor backgroundu', self, checkable = True)
        self.actionOpen.triggered.connect(self.toggleTitleDialog1)
        dialogMenu.addAction(self.actionOpen)

        self.actionOpen2 = QAction('Wielkosc kola', self, checkable=True)
        self.actionOpen2.triggered.connect(self.toggleTitleDialog2)
        dialogMenu.addAction(self.actionOpen2)

        self.setCentralWidget(Example())
        self.setMenuBar(menu)
        self.show()

    def toggleTitleDialog1(self):  # funkcja obsługi elementu menu /pokaż – schowaj dialog
        if self.actionOpen.isChecked():
            self.titleDialog1.show()
            self.titleDialog1.text = self.windowTitle()
        else:
            self.setWindowTitle(self.titleDialog1.text)
            self.titleDialog1.hide()
    def toggleTitleDialog2(self):  # funkcja obsługi elementu menu /pokaż – schowaj dialog
        if self.actionOpen.isChecked():
            self.titleDialog2.show()
            self.titleDialog2.text = self.windowTitle()
        else:
            self.setWindowTitle(self.titleDialog2.text)
            self.titleDialog2.hide()


    def changeTitle(self, title):  # slot obsługi zmiany tytułu
        self.setWindowTitle(title)

    def closeEvent(self, event):  # przedef. funkcji zamknięcia – zamykamy dialog
        self.titleDialog.done(0)
        event.accept()

class ModelessInput(QDialog):
    changed = pyqtSignal(str)  # sygnal do zmiany tytułu okna

    @property
    def text(self):
        return str(self.lineEdit.text())  # właśwość text – wpisany tytuł

    @text.setter
    def text(self, newText):
        self.lineEdit.setText(newText)

    def keyPressEvent(self, event):  # obsługa Enter/Return -zatwierdzenie
        if event.key() == Qt.Key_Enter or event.key() == Qt.Key_Return:
            self.changed.emit(self.text)

    def closeEvent(self, event):  # zablokowanie możliwości zamkniecia
        event.ignore()

    def __init__(self, parent=None, title=""):
        super(ModelessInput, self).__init__(parent)
        mainLayout = QVBoxLayout(self)
        self.lineEdit = QLineEdit(title)
        mainLayout.addWidget(self.lineEdit)
        self.setWindowTitle('Zmiana koloru tła')
        self.resize(350, 100)



class Example(QWidget):

    def __init__(self):
        super().__init__()

    def zmien(self, newR1, newR2):
        self.R1 = newR1
        self.R2 = newR2

    def paintEvent(self, event):
        self.R1 = 90
        self.R2 = 40
        x = self.size().width()/2
        y = self.size().height()/2
        R = (self.R1 - self.R2)/2
        qp = QPainter()
        qp.begin(self)
        qp.setPen(QPen(Qt.green, 8, Qt.SolidLine))
        qp.drawEllipse(x-R/2, y-R/2, R, R)
        qp.end()


def main():
  app = QApplication(sys.argv)
  ex = MainWnd()
  sys.exit(app.exec_())

if __name__ == '__main__':
 main()