AIprojekt-wozek/venv/Lib/site-packages/pygame/examples/playmus.py
2022-03-10 19:45:28 +01:00

166 lines
5.1 KiB
Python

#!/usr/bin/env python
""" pygame.examples.playmus
A simple music player.
Use pygame.mixer.music to play an audio file.
A window is created to handle keyboard events for playback commands.
Keyboard Controls
-----------------
space - play/pause toggle
r - rewind
f - fade out
q - stop
"""
import sys
import pygame as pg
import pygame.freetype
class Window(object):
"""The application's Pygame window
A Window instance manages the creation of and drawing to a
window. It is a singleton class. Only one instance can exist.
"""
instance = None
def __new__(cls, *args, **kwds):
"""Return an open Pygame window"""
if Window.instance is not None:
return Window.instance
self = object.__new__(cls)
pg.display.init()
self.screen = pg.display.set_mode((600, 400))
Window.instance = self
return self
def __init__(self, title):
pg.display.set_caption(title)
self.text_color = (254, 231, 21, 255)
self.background_color = (16, 24, 32, 255)
self.screen.fill(self.background_color)
pg.display.flip()
pygame.freetype.init()
self.font = pygame.freetype.Font(None, 20)
self.font.origin = True
self.ascender = int(self.font.get_sized_ascender() * 1.5)
self.descender = int(self.font.get_sized_descender() * 1.5)
self.line_height = self.ascender - self.descender
self.write_lines(
"\nPress 'q' or 'ESCAPE' or close this window to quit\n"
"Press 'SPACE' to play / pause\n"
"Press 'r' to rewind to the beginning (restart)\n"
"Press 'f' to fade music out over 5 seconds\n\n"
"Window will quit automatically when music ends\n",
0,
)
def __enter__(self):
return self
def __exit__(self, exc_type, exc_val, exc_tb):
self.close()
return False
def close(self):
pg.display.quit()
Window.instance = None
def write_lines(self, text, line=0):
w, h = self.screen.get_size()
line_height = self.line_height
nlines = h // line_height
if line < 0:
line = nlines + line
for i, text_line in enumerate(text.split("\n"), line):
y = i * line_height + self.ascender
# Clear the line first.
self.screen.fill(
self.background_color, (0, i * line_height, w, line_height)
)
# Write new text.
self.font.render_to(self.screen, (15, y), text_line, self.text_color)
pg.display.flip()
def show_usage_message():
print("Usage: python playmus.py <file>")
print(" python -m pygame.examples.playmus <file>")
def main(file_path):
"""Play an audio file with pg.mixer.music"""
with Window(file_path) as win:
win.write_lines("Loading ...", -1)
pg.mixer.init(frequency=44100)
try:
paused = False
pg.mixer.music.load(file_path)
# Make sure the event loop ticks over at least every 0.5 seconds.
pg.time.set_timer(pg.USEREVENT, 500)
pg.mixer.music.play()
win.write_lines("Playing ...\n", -1)
while pg.mixer.music.get_busy() or paused:
e = pg.event.wait()
if e.type == pg.KEYDOWN:
key = e.key
if key == pg.K_SPACE:
if paused:
pg.mixer.music.unpause()
paused = False
win.write_lines("Playing ...\n", -1)
else:
pg.mixer.music.pause()
paused = True
win.write_lines("Paused ...\n", -1)
elif key == pg.K_r:
if file_path[-3:].lower() in ("ogg", "mp3", "mod"):
status = "Rewound."
pg.mixer.music.rewind()
else:
status = "Restarted."
pg.mixer.music.play()
if paused:
pg.mixer.music.pause()
win.write_lines(status, -1)
elif key == pg.K_f:
win.write_lines("Fading out ...\n", -1)
pg.mixer.music.fadeout(5000)
# when finished get_busy() will return False.
elif key in [pg.K_q, pg.K_ESCAPE]:
paused = False
pg.mixer.music.stop()
# get_busy() will now return False.
elif e.type == pg.QUIT:
paused = False
pg.mixer.music.stop()
# get_busy() will now return False.
pg.time.set_timer(pg.USEREVENT, 0)
finally:
pg.mixer.quit()
pg.quit()
if __name__ == "__main__":
# Check the only command line argument, a file path
if len(sys.argv) != 2:
show_usage_message()
else:
main(sys.argv[1])