import sys
from PyQt5 import QtWidgets, uic
from PyQt5.QtGui import QPainter, QColor, QBrush
from PyQt5.QtCore import Qt
Ui_MainWindow, QtBaseClass = uic.loadUiType("Op5.ui")

class CFilledRect:
    def __init__(self, x, y, width, height, brush):
        self._x = x
        self._y = y
        self._width = width
        self._height = height
        self._brush = brush
        self._r = 0
        self._g = 0
        self._b = 0
    def draw(self, scene):
        item = QtWidgets.QGraphicsRectItem(0,0,self._x, self._y)
        item.setBrush(self._brush)
        scene.addItem(item)




class MyApp(QtWidgets.QMainWindow):
    def __init__(self):
        self._allRects = []
        self._allRemoved = []
        super(MyApp, self).__init__()
        self.ui = Ui_MainWindow()
        self.ui.setupUi(self)
        self._scene = QtWidgets.QGraphicsScene()
        self._scene.setSceneRect(0,0,100,100)
        self.ui.graphicsView.setScene(self._scene)
        self.ui.graphicsView.mousePressEvent = self.mouseDown
        self.ui.pushButton.clicked.connect(self.allRemoved)
        self.ui.pushButton_2.clicked.connect(self.allRedraw)

    def allRemoved(self):
        print("Yeet")
        self._allRemoved = self._allRects
        self._allRects = []
        self._scene.clear()

    def allRedraw(self):
        for C in self._allRemoved:
            C.draw(self._scene)
        print("Yeet")



    def mouseDown(self, event):
        point = self.ui.graphicsView.mapToScene(event.pos())
        self._x = point.x()
        self._y = point.y()
        r = self.ui.horizontalSlider.value()
        g = self.ui.horizontalSlider_2.value()
        b = self.ui.horizontalSlider_3.value()
        self._brush = QBrush(QColor.fromRgb(r,g,b), Qt.SolidPattern)
        C1 = CFilledRect(self._x,self._y,0,0,self._brush)
        self._allRects.append(C1)
        C1.draw(self._scene)
        print(self._x)



if __name__ == "__main__":
     app = 0 # lost Kernal died probeem op bij herhaald opstarten
     app = QtWidgets.QApplication(sys.argv)
     window = MyApp()
     window.show()
     sys.exit(app.exec_())