mirror of https://git.sr.ht/~michalr/menu
298 lines
12 KiB
Python
298 lines
12 KiB
Python
#!/usr/bin/env python3
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import math
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import argparse
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import json
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from enum import Enum, auto
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from time import sleep
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from threading import Thread
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from queue import Queue, Empty
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from typing import Tuple, Callable, TypedDict, List, Dict, Optional
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import pygame
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import pygame.freetype
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import requests
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from iboard import IBoard
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from screensavers import ClockScreensaver
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class ButtonDef(TypedDict):
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text: str
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cbk: Callable[[], None]
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class ActionType(Enum):
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MSG = auto() # Shows a message for about 5 seconds
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GET = auto() # Performs a HTTP GET
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QUIT = auto() # Quits an application
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class Action(TypedDict):
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label: str
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action_type: ActionType
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action_param: Optional[str]
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action_message: Optional[str]
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class Button:
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PRESS_OFFSET = 2
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HOVER_ANIMATION_STEPS = 5
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def __init__(self, position: pygame.Rect, text: str, theme: Dict, cbk: Callable[[], None]):
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self.position: pygame.Rect
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self.set_position(position)
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self.text = text
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self.theme = theme
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self.cbk = cbk
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self.font = pygame.freetype.SysFont(name="Sans", size=20)
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text_rect = self.font.get_rect(self.text)
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self.text_pos = pygame.Rect((self.position.left + (self.position.width - text_rect.width)/2),
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(self.position.top + (self.position.height - text_rect.height)/2),
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text_rect.width, text_rect.height)
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self.bg_color = pygame.Color(self.theme["btn_bg_color"])
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self.hover_bg_color = pygame.Color(self.theme["btn_hover_color"])
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self.hover_animation_step = 0
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def get_bg_color(self):
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if self.pos_is_inside(pygame.mouse.get_pos()):
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self.hover_animation_step = min(self.hover_animation_step + 1, self.HOVER_ANIMATION_STEPS)
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else:
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self.hover_animation_step = max(self.hover_animation_step - 1, 0)
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if self.hover_animation_step == self.HOVER_ANIMATION_STEPS:
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return self.hover_bg_color
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if self.hover_animation_step == 0:
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return self.bg_color
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new_color = tuple(map(lambda v: v[0] + (((v[1]-v[0])/self.HOVER_ANIMATION_STEPS)*self.hover_animation_step),
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zip(self.bg_color, self.hover_bg_color)))
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return new_color
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def needs_redrawing(self) -> bool:
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return self.hover_animation_step == self.HOVER_ANIMATION_STEPS or self.hover_animation_step == 0
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def set_position(self, position: pygame.Rect):
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self.position = position
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def get_position(self) -> pygame.Rect:
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if pygame.mouse.get_pressed(3)[0] and self.pos_is_inside(pygame.mouse.get_pos()):
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return pygame.Rect(self.position.left + self.PRESS_OFFSET, self.position.top + self.PRESS_OFFSET,
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self.position.width, self.position.height)
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return self.position
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def get_text_pos(self) -> pygame.Rect:
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if pygame.mouse.get_pressed(3)[0] and self.pos_is_inside(pygame.mouse.get_pos()):
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return pygame.Rect(self.text_pos.left + self.PRESS_OFFSET, self.text_pos.top + self.PRESS_OFFSET,
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self.text_pos.width, self.text_pos.height)
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return self.text_pos
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def draw(self, screen: pygame.Surface):
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pygame.draw.rect(screen, self.get_bg_color(), self.get_position(), 0)
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self.font.render_to(screen, self.get_text_pos(), self.text, fgcolor=self.theme["btn_text_color"])
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def pos_is_inside(self, pos: Tuple) -> bool:
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return (self.position.left < pos[0] and (self.position.left + self.position.width) > pos[0]) and \
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(self.position.top < pos[1] and (self.position.top + self.position.height) > pos[1])
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def handle_event(self, event: pygame.event.Event):
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if event.type == pygame.MOUSEBUTTONUP:
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if event.button == 1 and self.pos_is_inside(event.pos):
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self.cbk()
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class MessageBoard(IBoard):
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def __init__(self, screen_rect: pygame.Rect, text: str, theme: Dict):
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self.text = text
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self.font = pygame.freetype.SysFont(name="Sans", size=30)
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text_rect = self.font.get_rect(self.text)
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self.text_pos = pygame.Rect((screen_rect.left + (screen_rect.width - text_rect.width)/2),
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(screen_rect.top + (screen_rect.height - text_rect.height)/2),
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text_rect.width, text_rect.height)
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self.theme = theme
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self.was_drawn_already = False
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def handle_event(self, _):
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pass
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def draw(self, screen: pygame.Surface, force_redraw: bool):
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if not self.was_drawn_already or force_redraw:
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screen.fill(self.theme["message_bg_color"])
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self.font.render_to(screen, self.text_pos, self.text, fgcolor=self.theme["message_text_color"])
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self.was_drawn_already = True
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class MenuBoard(IBoard):
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BUTTON_MARGINS = 10
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def __init__(self, screen_rect: pygame.Rect, buttons: List[ButtonDef], theme: Dict):
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self.rows = math.floor(math.sqrt(len(buttons)))
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self.cols = math.ceil(math.sqrt(len(buttons)))
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if (self.rows * self.cols) < len(buttons):
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# extra row if buttons don't fit
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self.rows += 1
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button_positions = self.generate_button_positions(screen_rect)
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self.buttons = list(map(lambda d: Button(next(button_positions), d['text'], theme, d['cbk']), buttons))
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self.theme = theme
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def generate_button_positions(self, screen_rect: pygame.Rect):
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current_button_row = 0
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current_button_col = 0
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button_width = math.floor((screen_rect.width - (self.cols + 1) * self.BUTTON_MARGINS) / self.cols)
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button_height = math.floor((screen_rect.height - (self.rows + 1) * self.BUTTON_MARGINS) / self.rows)
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while (current_button_row * current_button_col) < (self.cols * self.rows):
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top = self.BUTTON_MARGINS + (current_button_row * (button_height + self.BUTTON_MARGINS))
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left = self.BUTTON_MARGINS + (current_button_col * (button_width + self.BUTTON_MARGINS))
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current_button_col += 1
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if current_button_col >= self.cols:
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current_button_col = 0
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current_button_row += 1
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yield pygame.Rect(left, top, button_width, button_height)
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def handle_event(self, event: pygame.event.Event):
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for b in self.buttons:
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b.handle_event(event)
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def draw(self, screen: pygame.Surface, force_redraw: bool):
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if force_redraw or any(map(Button.needs_redrawing, self.buttons)):
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screen.fill(self.theme["menu_bg_color"])
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for b in self.buttons:
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b.draw(screen)
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class App:
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FPS = 30
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def __init__(self, actions: List[Action], theme: Dict, fullscreen: bool, screensaver_delay: int):
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pygame.init()
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info = pygame.display.Info()
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flags = 0
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if fullscreen:
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flags = pygame.FULLSCREEN
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self.screen = pygame.display.set_mode((info.current_w, info.current_h), flags=flags)
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self.clock = pygame.time.Clock()
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self.running = False
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self.theme = theme
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buttons = list(map(lambda u: ButtonDef(text=u['label'], cbk=self.button_press_handler(u)), actions))
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self.board: IBoard = MenuBoard(self.get_screen_rect(), buttons, theme)
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self.task_q = Queue()
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self.screensaver = ClockScreensaver()
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self.TICKS_UNTIL_SCREENSAVER = screensaver_delay * self.FPS
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self.screensaver_ticks = self.TICKS_UNTIL_SCREENSAVER
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def get_screen_rect(self) -> pygame.Rect:
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return pygame.Rect(0, 0, self.screen.get_width(), self.screen.get_height())
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def show_message_handler(self, action: Action) -> Callable[[], None]:
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def impl():
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previous_board = self.board
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def thr_fun():
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def end_thr():
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self.board = previous_board
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try:
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sleep_time = int(action['action_param'])
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sleep(sleep_time)
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except Exception as e:
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def f(ex):
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def x():
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self.board = MessageBoard(self.get_screen_rect(), f"Exception caught: {ex}",
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theme=self.theme)
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return x
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self.task_q.put(f(e))
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sleep(5)
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finally:
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self.task_q.put(end_thr)
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process_thr = Thread(target=thr_fun)
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process_thr.start()
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self.board = MessageBoard(self.get_screen_rect(), action['action_message'], theme=self.theme)
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return impl
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def get_handler(self, action: Action) -> Callable[[], None]:
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def impl():
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previous_board = self.board
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def thr_fun():
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def end_thr():
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self.board = previous_board
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ret = requests.get(action['action_param'])
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print(f"GET {action['action_param']}: {ret}")
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self.task_q.put(end_thr)
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process_thr = Thread(target=thr_fun)
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process_thr.start()
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self.board = MessageBoard(self.get_screen_rect(), action['action_message'], theme=self.theme)
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return impl
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def button_press_handler(self, action: Action) -> Callable[[], None]:
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if action['action_type'] == ActionType.MSG:
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return self.show_message_handler(action)
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elif action['action_type'] == ActionType.GET:
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return self.get_handler(action)
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elif action['action_type'] == ActionType.QUIT:
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return self.quit
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raise NotImplementedError(action['action_type'])
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def loop(self):
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self.running = True
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needs_redrawing = True
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while self.running:
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try:
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self.task_q.get_nowait()()
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except Empty:
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pass
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for event in pygame.event.get():
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if event.type == pygame.QUIT:
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self.running = False
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if self.screensaver_ticks != 0:
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self.board.handle_event(event)
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self.screensaver_ticks = self.TICKS_UNTIL_SCREENSAVER
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needs_redrawing = True
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if self.screensaver_ticks == 0:
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self.screensaver.draw(self.screen, False)
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else:
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self.board.draw(self.screen, needs_redrawing)
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self.screensaver_ticks -= 1
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needs_redrawing = False
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pygame.display.flip()
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self.clock.tick(self.FPS)
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pygame.quit()
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def quit(self):
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self.board = MessageBoard(self.get_screen_rect(), "Exiting...", theme=self.theme)
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self.running = False
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def get_url_defs(config_data: dict) -> List[Action]:
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url_defs = []
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for d in data['actions']:
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url_defs.append(Action(label=d['label'],
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action_type=ActionType[d['action_type']],
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action_param=d.get('action_param'),
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action_message=d.get('action_message')))
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return url_defs
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if __name__ == '__main__':
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parser = argparse.ArgumentParser()
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parser.add_argument("config_path", help="Path to the config file.", type=str)
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parser.add_argument("--no-fullscreen", help="Fullscreen", action='store_true')
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parser.add_argument("--screensaver-delay", help="Screensaver delay, in seconds. Default=30",
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type=int, default=30)
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args = parser.parse_args()
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url_defs: List[Action] = []
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with open(args.config_path, "rb") as f:
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data = json.load(f)
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url_defs = get_url_defs(data)
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app = App(url_defs, theme=data["theme"], fullscreen=not args.no_fullscreen,
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screensaver_delay=args.screensaver_delay)
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app.loop()
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