Player volume

I can now change the volume using a button in the gui.  Additionally,
the volume is stored between sessions, and the correct value is loaded
when libsaria is initialized.

libsaria/__init__.py

@@ -19,8 +19,12 @@ music  = None
 def init():
 	global vars
 	global prefs
+	global music
+
 	vars = Map()
 	prefs = Map("preferences")
+	import music
+
 	event.start("POSTINIT")
 
 
@@ -32,9 +36,7 @@ def init_pref(key, value):
 
 
 def startup():
-	global music
 	global plugin
-	import music
 	import plugin
 
 	event.start("PRESTART")

libsaria/music/__init__.py

@@ -9,6 +9,9 @@ exists = libsaria.path.exists
 audio  = None
 tdelta = None
 
+def ls_init():
+	libsaria.init_pref("volume", 1.0)
+libsaria.event.invite("POSTINIT", ls_init)
 
 def init():
 	global tdelta
@@ -74,3 +77,7 @@ def get_time():
 	time = time.split(':', 1)[1]
 	return time
 
+
+def set_volume(prcnt):
+	global audio
+	return call("SETVOLUME", audio.set_volume, prcnt)

libsaria/music/audio.py

@@ -16,6 +16,7 @@ def init():
 	import gst
 
 	player = gst.element_factory_make("playbin2", "player")
+	set_volume(libsaria.prefs["volume"])
 	time = gst.Format(gst.FORMAT_TIME)
 	bus = player.get_bus()
 	bus.add_signal_watch()
@@ -103,6 +104,7 @@ def seek(prcnt):
 		pass
 
 
-def volume(prcnt):
+def set_volume(prcnt):
 	global player
 	player.set_property("volume", prcnt)
+	libsaria.prefs["volume"] = prcnt

ocarina/button.py

@@ -1,8 +1,9 @@
 # Bryan Schumaker (8/26/2010)
 
 import ocarina
-LS  = ocarina.libsaria
+LS    = ocarina.libsaria
-gtk = ocarina.gtk
+gtk   = ocarina.gtk
+prefs = LS.prefs
 
 
 class Button(gtk.Button):
@@ -75,3 +76,25 @@ class DownButton(Button):
 		self.callback = callback
 	def clicked(self, button):
 		self.callback()
+
+class VolumeButton(gtk.VolumeButton):
+	def __init__(self):
+		gtk.VolumeButton.__init__(self)
+		self.set_relief(gtk.RELIEF_NONE)
+
+		adj = self.get_adjustment()
+		adj.set_page_increment(0.05)
+		self.set_value(prefs["volume"])
+		self.resize()
+
+		self.connect("value-changed", self.changed)
+		self.show()
+
+	def resize(self):
+		image = self.get_children()[0]
+		icon = image.get_icon_name()[0]
+		image.set_from_icon_name(icon, gtk.ICON_SIZE_MENU)
+
+	def changed(self, widget, value):
+		LS.music.set_volume(value)
+		widget.resize()

ocarina/info.py

@@ -57,6 +57,7 @@ class InfoBar(Bar):
 		self.pack(button.PlayButton())
 		self.pack(button.PauseButton())
 		self.pack(button.StopButton())
+		self.pack(button.VolumeButton())
 		self.pack(button.UpButton(up_button))
 
 		libsaria.event.invite("POSTLOAD", self.change_title)
@@ -81,6 +82,7 @@ class InfoTab(gtk.Notebook):
 		hbox.pack_start(button.PlayButton())
 		hbox.pack_start(button.PauseButton())
 		hbox.pack_start(button.StopButton())
+		hbox.pack_start(button.VolumeButton())
 		hbox.pack_start(button.DownButton(down_button))
 		self.set_action_widget(hbox, gtk.PACK_END)