music_sampler/app_blocks/actionlist.py

   1 from kivy.uix.label import Label
   2 from kivy.uix.stacklayout import StackLayout
   3 from kivy.uix.relativelayout import RelativeLayout
   4 from kivy.properties import ListProperty, StringProperty
   5 from ..lock import Lock
   6
   7 __all__ = ["ActionList",
   8         "ActionListIcons", "ActionListIcon",
   9         "ActionListDescriptions", "ActionListDescription"]
  10
  11 actionlist_lock = Lock("playlist")
  12
  13 class ActionList(RelativeLayout):
  14     action_title = StringProperty("")
  15     action_list = ListProperty([])
  16
  17     def update_list(self, key, action_descriptions):
  18         if key.repeat_delay > 0:
  19             self.action_title = _(
  20                     "actions linked to key {} (repeat protection {}s):"
  21                     ).format(key.key_sym, key.repeat_delay)
  22         else:
  23             self.action_title = _(
  24                     "actions linked to key {}:"
  25                     ).format(key.key_sym)
  26
  27         action_list = []
  28
  29         for [action, status] in action_descriptions:
  30             if status == "done":
  31                 icon = "✓"
  32             elif status == "current":
  33                 icon = "✅"
  34             else:
  35                 icon = " "
  36             action_list.append([icon, action])
  37         with actionlist_lock:
  38             self.action_list = action_list
  39
  40 class ActionListIcons(StackLayout):
  41     def __init__(self, **kwargs):
  42         super(ActionListIcons, self).__init__(**kwargs)
  43         self.icons = []
  44
  45     def on_parent(self, instance, parent):
  46         parent.bind(action_list=self.update_actionlist_icons)
  47
  48     def update_actionlist_icons(self, instance, actionlist):
  49         icons_length = len(self.icons)
  50         index = -1
  51         for index, [icon, description] in enumerate(actionlist):
  52             if index >= icons_length:
  53                 icon_label = ActionListIcon(text=icon)
  54                 self.add_widget(icon_label)
  55                 self.icons.append(icon_label)
  56             else:
  57                 self.icons[index].text = icon
  58
  59         if index+1 < icons_length:
  60             self.clear_widgets(children=self.icons[index+1:icons_length])
  61             del(self.icons[index+1:icons_length])
  62
  63 class ActionListIcon(Label):
  64     def __init__(self, text='', **kwargs):
  65         super(ActionListIcon, self).__init__(**kwargs)
  66         self.text = text
  67
  68     def on_parent(self, instance, parent):
  69         if parent is not None:
  70             parent.bind(font_size=self.update_font_size)
  71             parent.bind(labels_height=self.update_height)
  72
  73     def update_height(self, instance, height):
  74         self.height = height
  75
  76     def update_font_size(self, instance, font_size):
  77         self.font_size = font_size
  78
  79 class ActionListDescriptions(StackLayout):
  80     def __init__(self, **kwargs):
  81         super(ActionListDescriptions, self).__init__(**kwargs)
  82         self.descriptions = []
  83
  84     def on_parent(self, instance, parent):
  85         parent.bind(action_list=self.update_actionlist_descriptions)
  86
  87     def update_actionlist_descriptions(self, instance, actionlist):
  88         descriptions_length = len(self.descriptions)
  89         index = -1
  90         for index, [icon, description] in enumerate(actionlist):
  91             if index >= descriptions_length:
  92                 description_label = ActionListDescription(text=description)
  93                 self.add_widget(description_label)
  94                 self.descriptions.append(description_label)
  95             else:
  96                 self.descriptions[index].text = description
  97
  98         if index+1 < descriptions_length:
  99             self.clear_widgets(
 100                     children=self.descriptions[index+1:descriptions_length])
 101             del(self.descriptions[index+1:descriptions_length])
 102
 103 class ActionListDescription(Label):
 104     def __init__(self, text='', **kwargs):
 105         super(ActionListDescription, self).__init__(**kwargs)
 106         self.text = text
 107
 108     def on_parent(self, instance, parent):
 109         if parent is not None:
 110             parent.bind(font_size=self.update_font_size)
 111             parent.bind(labels_height=self.update_height)
 112
 113     def update_height(self, instance, height):
 114         self.height = height
 115
 116     def update_font_size(self, instance, font_size):
 117         self.font_size = font_size
 118