优化线程通讯, mpd改为基于Gtk的信号槽机制通讯

main.py

@@ -19,6 +19,7 @@ app_id = 'fun.wkit.sonist'
 home_dir = os.getenv('HOME')
 
 
+# 定义一个异步修饰器, 用于在子线程中运行一些会阻塞主线程的任务
 def run_async(func):
   def wrapper(*args, **kwargs):
     thread = threading.Thread(target=func, args=args, kwargs=kwargs)
@@ -27,7 +28,7 @@ def run_async(func):
     return thread
   return wrapper
 
-
+# 类型js的settimeout的修饰器
 def set_timeout(timeout = 0.5):
   def decorator(callback):
     def wrapper(*args):
@@ -39,6 +40,7 @@ def set_timeout(timeout = 0.5):
   return decorator
 
 
+
 def get_music_dir():
   with open(f'{home_dir}/.mpd/mpd.conf', 'r') as f:
     data = f.read()
@@ -52,38 +54,38 @@ def get_music_dir():
 
 class Application(Gtk.Application):
 
-  __gsignals__ = {
-    'playing': (GObject.SignalFlags.RUN_FIRST, None, (bool,)),
-    'song_changed': (GObject.SignalFlags.RUN_FIRST, None, (bool,)),
-    'state_changed': (GObject.SignalFlags.RUN_FIRST, None, (str,))
-  }
-
-
   def __init__(self):
     Gtk.Application.__init__(self, application_id = app_id)
 
     self.timer = None
 
-    self.mpd = MPDClient()
-
     self.music_dir = get_music_dir()
+    self.mpd = MPDClient()
 
     self.connect('window-removed', self.on_window_removed)
 
-    self.mpd.connect()
 
 
+
+  @run_async
+  def connect_mpd(self):
+    
+    self.mpd.start()
+
   def do_activate(self):
     print('hello mpc')
     self.set_app_menu(None)
     self.set_menubar(None)
 
+
     self.window = SonistWindow(self)
     self.about = AboutWindow()
     self.add_window(self.window)
     self.window.show_all()
     # self.about.show_all()
 
+    self.connect_mpd()
+
 
   def on_window_removed(self, app, win):
     if len(self.get_windows()) == 0:

window.py

@@ -1,11 +1,11 @@
 #!/usr/bin/env python3
 
-import gi, sys, os, mutagen
+import gi, sys, os, mutagen, threading
 # from pprint import pprint as print
 
 gi.require_version('Gtk', '3.0')
 
-from gi.repository import Gtk, Gdk, GLib, GdkPixbuf
+from gi.repository import Gtk, Gdk, GLib, GdkPixbuf, GObject
 
 from utils import blur_image, pic_to_pixbuf, base64_to_pixbuf
 
@@ -18,7 +18,11 @@ from ui.timebar import Timebar
 from ui.option_menu import OptionMenu
 
 
-
+# 定义一个修饰器, 用于将当前方法转到主线程中运行 (子线程中调用方法时)
+def idle(func):
+  def wrapper(*args):
+    GObject.idle_add(func, *args)
+  return wrapper
 
 
 class SonistWindow(Gtk.Window):
@@ -34,12 +38,11 @@ class SonistWindow(Gtk.Window):
 
     self.connect("destroy", self.quited)
 
-    self.mpd.bind('offline', lambda : self.reset_player())
-    self.mpd.bind('online', lambda : self.sync_state(None, None, True))
-    self.mpd.bind('state_changed', lambda stat: self.update_play_stat(stat == 'play'))
-    self.mpd.bind('song_changed', lambda stat, song: self.sync_state(stat, song, False))
-    self.mpd.bind('playing', lambda stat, song: self.update_playtime(stat))
-    
+    self.mpd.connect('offline', lambda o: self.reset_player())
+    self.mpd.connect('online', lambda o: self.sync_state(None, None, True))
+    self.mpd.connect('state_changed', lambda o, stat: self.update_play_stat(stat == 'play'))
+    self.mpd.connect('song_changed', lambda o, stat, song: self.sync_state(stat, song, False))
+    self.mpd.connect('playing', lambda o, stat, song: self.update_playtime(stat))
 
     self.set_name('SonistWindow')
     self.set_default_size(320, 384)
@@ -109,6 +112,9 @@ class SonistWindow(Gtk.Window):
     self.add(layout)
 
  
+    
+
+
   def get_mpd_stat(self):
     try:
       self.stat = self.mpd.status()
@@ -201,7 +207,7 @@ class SonistWindow(Gtk.Window):
     except:
       pass
 
-
+  @idle
   def update_play_stat(self, played = True):
     if not self.mpd.connected:
       return 
@@ -214,13 +220,16 @@ class SonistWindow(Gtk.Window):
     # 切换播放按钮状态
     self.ctrl_box.toggle_play_btn(played)
 
-
+  @idle
   def update_playtime(self, stat = {}):
     times = stat['time'].split(':')
     self.timebar.update_time(int(times[0]), int(times[1]))
     
+  @idle
   def sync_state(self, stat = None, song = None, first = False):
     self.ctrl_box.disabled = False
+    print(threading.active_count())
+    print(threading.current_thread())
     
     self.stat = stat or self.get_mpd_stat()
 
@@ -262,16 +271,19 @@ class SonistWindow(Gtk.Window):
         except:
           pass
   
+  @idle
   def reset_player(self):
     self.ctrl_box.disabled = True
     self.title_box.set_text('mpd is offline...')
     self.timebar.update_time()
     self.update_album('./usr/share/sonist/avatar.jpg')
 
+  @idle
   def update_album(self, filepath):
     self.set_background_image(filepath)
     self.album.reset(filepath).set_radius(64)
 
+
   def quited(self, win):
     self.app.remove_window(self)