How to use imgui - 10 common examples

def on_frame():
    if imgui.begin_main_menu_bar():
        if imgui.begin_menu("File", True):
            clicked_quit, selected_quit = imgui.menu_item(
                "Quit", 'Cmd+Q', False, True
            )
            if clicked_quit:
                exit(1)
            imgui.end_menu()
        imgui.end_main_menu_bar()
    imgui.show_test_window()
    imgui.begin("Custom window", True)
    imgui.text("Bar")
    imgui.text_colored("Eggs", 0.2, 1., 0.)
    imgui.end()

if imgui.begin_menu("File", True):

                clicked_quit, selected_quit = imgui.menu_item(
                    "Quit", 'Cmd+Q', False, True
                )

                if clicked_quit:
                    exit(1)

                imgui.end_menu()
            imgui.end_main_menu_bar()

        imgui.show_test_window()

        imgui.begin("Custom window", True)
        imgui.text("Bar")
        imgui.text_colored("Eggs", 0.2, 1., 0.)
        imgui.end()

        imgui.render()
        self.imgui.render(imgui.get_draw_data())

clicked, metadata["type"] = imgui.combo(
                "Attribute Type##type-"+attr,
                metadata["type"],
                DB.type_name
            )

            clicked, metadata["is_list"] = imgui.checkbox("Is List", bool(metadata.get("is_list")))

            if metadata["type"] == 2:
                imgui.text("Leave -1s to allow an arbitrary string.")
                changed, metadata["num_limits"] = imgui.input_int2('Int Limits##'+attr, *metadata["num_limits"])
            elif metadata["type"] == 3:
                imgui.text("Leave -1s to allow an arbitrary string.")
                changed, metadata["num_limits"] = imgui.input_float2('Float Limits##'+attr, *metadata["num_limits"])
            elif metadata["type"] == 1:
                imgui.text("Leave blank to allow an arbitrary string.")
                changed, strings = imgui.input_text(
                    "Allowed Strings##" + attr,
                    ','.join(metadata["allowed_strings"]),
                    256,
                    imgui.INPUT_TEXT_ENTER_RETURNS_TRUE
                )
                metadata["allowed_strings"] = list(filter(lambda x: len(x), strings.split(",")))
            elif metadata["type"] == 0:
                imgui.text("All entities allowed")
            imgui.unindent()
        if imgui.button("Add New Attribute Metadata"):
            imgui.open_popup("new-attribute-meta")

        new_name = draw_ok_cancel_popup("new-attribute-meta", "Attribute Name:")
        if new_name:
            new_name = new_name.lower().replace(" ", "_").replace("-", "_")

elif metadata["type"] == 3:
                imgui.text("Leave -1s to allow an arbitrary string.")
                changed, metadata["num_limits"] = imgui.input_float2('Float Limits##'+attr, *metadata["num_limits"])
            elif metadata["type"] == 1:
                imgui.text("Leave blank to allow an arbitrary string.")
                changed, strings = imgui.input_text(
                    "Allowed Strings##" + attr,
                    ','.join(metadata["allowed_strings"]),
                    256,
                    imgui.INPUT_TEXT_ENTER_RETURNS_TRUE
                )
                metadata["allowed_strings"] = list(filter(lambda x: len(x), strings.split(",")))
            elif metadata["type"] == 0:
                imgui.text("All entities allowed")
            imgui.unindent()
        if imgui.button("Add New Attribute Metadata"):
            imgui.open_popup("new-attribute-meta")

        new_name = draw_ok_cancel_popup("new-attribute-meta", "Attribute Name:")
        if new_name:
            new_name = new_name.lower().replace(" ", "_").replace("-", "_")
            DB.attribute_metadata[new_name] = {
                "description": "",
                "type": 5,
                "num_limits": (0,0),
                "is_list": False,
                "allowed_strings": []
            }
            attr_expanded[new_name] = False
        imgui.end()

def main():
    pygame.init()

    size = 800, 600

    pygame.display.set_mode(size, pygame.DOUBLEBUF | pygame.OPENGL)

    io = imgui.get_io()
    io.fonts.add_font_default()
    io.display_size = size

    renderer = PygameRenderer()

    while 1:
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                sys.exit()

            renderer.process_event(event)

        imgui.new_frame()

        if imgui.begin_main_menu_bar():
            if imgui.begin_menu("File", True):

def run():
    global DB, database_name, TICK_INTERVAL, show_meta_attr, show_rules_db, show_eav_db, show_table_db
    font_extra = imgui.get_io().fonts.add_font_from_file_ttf(
        "Fonts/Roboto-Light.ttf", 20
    )
    font_extra2 = imgui.get_io().fonts.add_font_from_file_ttf(
        "Fonts/RobotoMono-Light.ttf", 20
    )
    window, gl_context = impl_pysdl2_init()
    renderer = SDL2Renderer(window)

    running = True
    event = SDL_Event()

    show_save_as = False
    show_load_db = False

    TICK_INTERVAL = 30
    next_time = SDL_GetTicks() + TICK_INTERVAL;

    io = imgui.get_io()
    while running:

if imgui.begin_main_menu_bar():
            if imgui.begin_menu("File", True):

                clicked_quit, selected_quit = imgui.menu_item(
                    "Quit", 'Cmd+Q', False, True
                )

                if clicked_quit:
                    exit(1)

                imgui.end_menu()
            imgui.end_main_menu_bar()

        imgui.show_test_window()

        imgui.begin("Custom window", True)
        imgui.text("Bar")
        imgui.text_colored("Eggs", 0.2, 1., 0.)
        imgui.end()

        gl.glClearColor(1., 1., 1., 1)
        gl.glClear(gl.GL_COLOR_BUFFER_BIT)

        imgui.render()
        impl.render(imgui.get_draw_data())
        glfw.swap_buffers(window)

    impl.shutdown()
    glfw.terminate()

if imgui.begin_main_menu_bar():
            if imgui.begin_menu("File", True):

                clicked_quit, selected_quit = imgui.menu_item(
                    "Quit", 'Cmd+Q', False, True
                )

                if clicked_quit:
                    exit(1)

                imgui.end_menu()
            imgui.end_main_menu_bar()

        imgui.show_test_window()

        imgui.begin("Custom window", True)
        imgui.text("Bar")
        imgui.text_colored("Eggs", 0.2, 1., 0.)
        imgui.end()

        gl.glClearColor(1., 1., 1., 1)
        gl.glClear(gl.GL_COLOR_BUFFER_BIT)

        imgui.render()

        SDL_GL_SwapWindow(window)

    renderer.shutdown()
    SDL_GL_DeleteContext(gl_context)
    SDL_DestroyWindow(window)
    SDL_Quit()

on_exit()
                try:
                    sys.exit()
                except SystemExit as e:
                    time.sleep(0.5)
                    # sys.exit()
                    # sys.terminate()
                    os._exit(1)

            pygame_renderer.process_event(event)

        imgui.new_frame()
        if params.provide_default_window:
            imgui.set_next_window_position(0, 0)
            imgui.set_next_window_size(win_size[0], win_size[1])
            imgui.begin("Default window")
        gui_loop_function()
        if params.provide_default_window:
            imgui.end()
        ImGuiImageLister._heartbeat()

        # note: cannot use screen.fill((1, 1, 1)) because pygame's screen
        #       does not support fill() on OpenGL surfaces
        gl.glClearColor(1, 1, 1, 1)
        gl.glClear(gl.GL_COLOR_BUFFER_BIT)
        imgui.render()
        pygame_renderer.render(imgui.get_draw_data())
        pygame.display.flip()

        imgui_cv._clear_all_cv_textures()
        imgui_ext.__clear_all_unique_labels()

def on_frame():
    if imgui.begin_main_menu_bar():
        if imgui.begin_menu("File", True):
            clicked_quit, selected_quit = imgui.menu_item(
                "Quit", 'Cmd+Q', False, True
            )
            if clicked_quit:
                exit(1)
            imgui.end_menu()
        imgui.end_main_menu_bar()
    imgui.show_test_window()
    imgui.begin("Custom window", True)
    imgui.text("Bar")
    imgui.text_colored("Eggs", 0.2, 1., 0.)
    imgui.end()