File size: 2,548 Bytes
a7d7463 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 | """Loading Spinner - Show loading state"""
import sys
import time
import threading
from typing import Optional
from contextlib import contextmanager
from .config import DEFAULT_CONFIG, AnimationConfig
class Spinner:
"""Animated loading spinner for terminal"""
FRAMES = ["⠋", "⠙", "⠹", "⠸", "⠼", "⠴", "⠦", "⠧", "⠇", "⠏"]
def __init__(self, message: str = "Loading", config: Optional[AnimationConfig] = None):
self.message = message
self.config = config or DEFAULT_CONFIG
self.running = False
self.thread: Optional[threading.Thread] = None
self.frame_index = 0
def _spin(self):
"""Internal spin loop"""
while self.running:
frame = self.SPINNER_FRAMES[self.frame_index % len(self.SPINNER_FRAMES)]
sys.stdout.write(f"\r{self.config.speed} {frame} {self.message}...")
sys.stdout.flush()
time.sleep(self.config.speed)
self.frame_index += 1
sys.stdout.write("\r" + " " * (len(self.message) + 10))
sys.stdout.write("\r")
sys.stdout.flush()
def start(self):
"""Start the spinner animation"""
self.running = True
self.thread = threading.Thread(target=self._spin, daemon=True)
self.thread.start()
def stop(self):
"""Stop the spinner animation"""
self.running = False
if self.thread:
self.thread.join(timeout=0.5)
@contextmanager
def __call__(self):
"""Context manager for spinner"""
try:
self.start()
yield self
finally:
self.stop()
class SimpleSpinner:
"""Simple spinner without threading"""
def __init__(self, message: str = "Loading"):
self.message = message
self.frame_index = 0
def spin(self) -> str:
"""Get next spin frame"""
frame = Spinner.FRAMES[self.frame_index % len(Spinner.FRAMES)]
self.frame_index += 1
return f"\r{frame} {self.message}..."
def reset(self):
"""Reset spinner state"""
self.frame_index = 0
def spinning(message: str = "Loading", duration: float = 2.0):
"""Simple spinning animation for a duration"""
spinner = SimpleSpinner(message)
end_time = time.time() + duration
while time.time() < end_time:
sys.stdout.write(spinner.spin())
sys.stdout.flush()
time.sleep(0.1)
sys.stdout.write("\r" + " " * (len(message) + 10))
sys.stdout.write("\r")
sys.stdout.flush()
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