from PyQt5.Qt import *
from PyQt5.Qsci import QsciScintilla
from PyQt5.Qsci import QsciLexerCPP
from sip import SIP_VERSION_STR


class Lexer(QsciLexerCPP):
    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)

    def defaultPaper(self, style):
        return QColor(QColor("#272822"))


if __name__ == '__main__':
    WANT_TO_EXPOSE_THE_BUG = False

    app = QApplication([])
    w = QMainWindow()

    print(f"Qt version: {QT_VERSION_STR}")
    print(f"SIP version: {SIP_VERSION_STR}")
    print(f"PyQt version: {PYQT_VERSION_STR}")

    lexer = Lexer()
    widget1 = QsciScintilla()
    widget1.setText("Hello world\n" * 10)
    widget1.setLexer(lexer)
    dock1 = QDockWidget("dock1", w)
    dock1.setWidget(widget1)
    w.addDockWidget(Qt.BottomDockWidgetArea, dock1)

    if WANT_TO_EXPOSE_THE_BUG:
        widget2 = QOpenGLWidget()
        dock2 = QDockWidget("dock2", w)
        dock2.setWidget(widget2)
        w.addDockWidget(Qt.BottomDockWidgetArea, dock2)

    w.show()

    app.exec_()