GUI Framework

class UIManager:
    """
    Main UI manager for handling GUI elements, events, and rendering.
    """
    def __init__(self, window: arcade.Window = None):
        """Create UI manager for window."""
    
    def add(self, widget: arcade.gui.UIWidget) -> None:
        """Add widget to manager."""
    
    def remove(self, widget: arcade.gui.UIWidget) -> None:
        """Remove widget from manager."""
    
    def clear(self) -> None:
        """Remove all widgets."""
    
    def on_draw(self) -> None:
        """Draw all widgets."""
    
    def on_update(self, delta_time: float) -> None:
        """Update widgets."""

class UIView(arcade.View):
    """
    View with built-in UI manager for easy GUI integration.
    """
    def __init__(self):
        super().__init__()
        self.ui_manager = arcade.gui.UIManager()

class UIWidget:
    """
    Base widget class for all GUI elements.
    """
    def __init__(self, x: float = 0, y: float = 0, width: float = 100, height: float = 100):
        """Create base widget."""
    
    x: float
    y: float
    width: float
    height: float
    visible: bool
    
    def on_draw(self) -> None:
        """Draw the widget."""
    
    def on_update(self, delta_time: float) -> None:
        """Update widget logic."""

class UIInteractiveWidget(UIWidget):
    """
    Base class for interactive widgets that handle events.
    """
    def on_click(self, event: arcade.gui.UIOnClickEvent) -> None:
        """Handle click events."""
    
    def on_hover(self, event: arcade.gui.UIMouseEvent) -> None:
        """Handle hover events."""

class UIFlatButton(UIInteractiveWidget):
    """
    Flat-style button widget with text and click handling.
    """
    def __init__(self, text: str = "Button", x: float = 0, y: float = 0, 
                 width: float = 100, height: float = 50, 
                 style: dict = None):
        """Create flat button."""
    
    text: str
    style: dict
    
    def on_click(self, event: arcade.gui.UIOnClickEvent) -> None:
        """Handle button click."""

class UITextureButton(UIInteractiveWidget):
    """
    Button widget using textures for different states.
    """
    def __init__(self, x: float = 0, y: float = 0, 
                 texture: arcade.Texture = None,
                 texture_hovered: arcade.Texture = None,
                 texture_pressed: arcade.Texture = None):
        """Create texture button."""
    
    texture: arcade.Texture
    texture_hovered: arcade.Texture
    texture_pressed: arcade.Texture

class UILayout(UIWidget):
    """
    Base layout widget for organizing child widgets.
    """
    def add(self, widget: UIWidget) -> None:
        """Add child widget to layout."""
    
    def remove(self, widget: UIWidget) -> None:
        """Remove child widget."""

class UIBoxLayout(UILayout):
    """
    Linear layout (horizontal or vertical).
    """
    def __init__(self, vertical: bool = True, align: str = "center", space_between: int = 0):
        """Create box layout."""
    
    vertical: bool
    align: str
    space_between: int

class UIGridLayout(UILayout):
    """
    Grid-based layout with rows and columns.
    """
    def __init__(self, column_count: int = 1, row_count: int = 1):
        """Create grid layout."""
    
    column_count: int
    row_count: int

class UILabel(UIWidget):
    """
    Text label widget for displaying static text.
    """
    def __init__(self, text: str = "Label", x: float = 0, y: float = 0,
                 font_name: str = "Arial", font_size: int = 16,
                 text_color: tuple = (255, 255, 255, 255)):
        """Create text label."""
    
    text: str
    font_name: str
    font_size: int
    text_color: tuple

class UIInputText(UIInteractiveWidget):
    """
    Text input field for user text entry.
    """
    def __init__(self, x: float = 0, y: float = 0, width: float = 200,
                 text: str = "", placeholder: str = ""):
        """Create text input."""
    
    text: str
    placeholder: str
    cursor_position: int
    
    def on_text(self, text: str) -> None:
        """Handle text input."""

class UIEvent:
    """Base UI event class."""
    pass

class UIOnClickEvent(UIEvent):
    """Click event with position and button info."""
    x: int
    y: int
    button: int

class UIOnChangeEvent(UIEvent):
    """Value change event for inputs."""
    old_value: object
    new_value: object

class UIMouseEvent(UIEvent):
    """Mouse event with position and movement."""
    x: int
    y: int
    dx: int
    dy: int

import arcade
import arcade.gui

class MenuView(arcade.gui.UIView):
    def __init__(self):
        super().__init__()
        self.setup_ui()
    
    def setup_ui(self):
        # Create vertical layout
        v_box = arcade.gui.UIBoxLayout(vertical=True, space_between=20)
        
        # Title
        title = arcade.gui.UILabel("Game Menu", font_size=32)
        v_box.add(title)
        
        # Buttons
        start_button = arcade.gui.UIFlatButton("Start Game", width=200)
        start_button.on_click = self.on_start_click
        v_box.add(start_button)
        
        options_button = arcade.gui.UIFlatButton("Options", width=200)
        v_box.add(options_button)
        
        quit_button = arcade.gui.UIFlatButton("Quit", width=200)
        quit_button.on_click = self.on_quit_click
        v_box.add(quit_button)
        
        # Add layout to UI manager
        self.ui_manager.add(v_box)
    
    def on_start_click(self, event):
        game_view = GameView()
        self.window.show_view(game_view)
    
    def on_quit_click(self, event):
        arcade.exit()
    
    def on_draw(self):
        self.clear()
        self.ui_manager.on_draw()

def main():
    window = arcade.Window(800, 600, "GUI Example")
    menu = MenuView()
    window.show_view(menu)
    arcade.run()

if __name__ == "__main__":
    main()