3 files changed, 84 insertions, 2 deletions

diff --git a/helpers/key.py b/helpers/key.py
index f49b3ec..ca73b87 100644
--- a/helpers/key.py
+++ b/helpers/key.py
@@ -83,6 +83,7 @@ class Key(ButtonBehavior, Widget):
         if not self.enabled:
             return None
 
+        self.parent.parent.ids['KeyList'].append(self.key_sym)
         print("running actions for {}".format(self.key_sym))
         start_time = time.time()
         self.parent.start_running(self, start_time)
diff --git a/music_sampler.kv b/music_sampler.kv
index 4a44069..d21c5fb 100644
--- a/music_sampler.kv
+++ b/music_sampler.kv
@@ -85,14 +85,21 @@
   mapping_width: self.key_size * 18 + self.key_sep * 16 + self.key_pad_sep
   mapping_x: self.border
   mapping_y: self.top - self.mapping_height - self.border
+
+  key_list_width: 4 * (mock_ubuntu_regular.width or 0)
+  key_list_height: self.height - self.mapping_height - 3 * self.border
+  key_list_x: (self.action_list_width or 0) + 2 * self.border
+  key_list_y: self.border
+
   action_list_height: self.height - self.mapping_height - 3 * self.border
-  action_list_width: 3 * self.width / 4
+  action_list_width: 3 * self.width / 4 - self.key_list_width - self.border
   action_list_x: self.border
   action_list_y: self.border
+
   play_list_height: self.action_list_height
   play_list_width: self.width - self.action_list_width - 3* self.border
   play_list_y: self.border
-  play_list_x: self.action_list_width + 2 * self.border
+  play_list_x: self.action_list_width + self.key_list_width + 3 * self.border
 
   min_height: min(mock_symbola.height, mock_ubuntu_regular.height, mock_ubuntu_bold.height)
   symbola_line_height: self.min_height / max(mock_symbola.height,1)
@@ -139,11 +146,68 @@
     id: ActionList
     pos: self.parent.action_list_x, self.parent.action_list_y
     size: self.parent.action_list_width, self.parent.action_list_height
+  KeyList:
+    id: KeyList
+    pos: self.parent.key_list_x, self.parent.key_list_y
+    size: self.parent.key_list_width, self.parent.key_list_height
   PlayList:
     id: PlayList
     pos: self.parent.play_list_x, self.parent.play_list_y
     size: self.parent.play_list_width, self.parent.play_list_height
 
+<KeyList>:
+  size_hint: None, None
+  canvas:
+    Color:
+      rgba: 250./255, 250./255, 250./255, 1
+    Rectangle:
+      pos:  0, 0
+      size: self.width, self.height
+  Label:
+    id: key_list_first
+    font_name: h.path() + "fonts/Ubuntu-B.ttf"
+    font_size: math.ceil(2 * math.sqrt(self.parent.parent.key_size or 10))
+    color: 0, 0, 0, 1
+    text: self.parent.first_key
+    text_size: None, None
+    valign: "top"
+    size_hint: None, None
+    size: self.parent.width, self.texture_size[1]
+    pos: 0, self.parent.height - self.height
+  Label:
+    id: key_list_second
+    font_name: h.path() + "fonts/Ubuntu-Regular.ttf"
+    font_size: math.ceil(2 * math.sqrt(self.parent.parent.key_size or 10))
+    color: 0, 0, 0, 1
+    text: self.parent.second_key
+    text_size: None, None
+    valign: "top"
+    size_hint: None, None
+    size: self.parent.width, self.texture_size[1]
+    pos: 0, self.parent.height - key_list_first.height - self.height
+  Label:
+    id: key_list_third
+    font_name: h.path() + "fonts/Ubuntu-Regular.ttf"
+    font_size: math.ceil(2 * math.sqrt(self.parent.parent.key_size or 10))
+    color: 0, 0, 0, 0.75
+    text: self.parent.third_key
+    text_size: None, None
+    valign: "top"
+    size_hint: None, None
+    size: self.parent.width, self.texture_size[1]
+    pos: 0, self.parent.height - key_list_first.height - key_list_second.height - self.height
+  Label:
+    id: key_list_rest
+    font_name: h.path() + "fonts/Ubuntu-Regular.ttf"
+    font_size: math.ceil(2 * math.sqrt(self.parent.parent.key_size or 10))
+    color: 0, 0, 0, 0.5
+    text: "\n".join(self.parent.keylist[3:])
+    text_size: None, None
+    valign: "top"
+    size_hint: None, None
+    size: self.parent.width, self.texture_size[1]
+    pos: 0, self.parent.height - key_list_first.height - key_list_second.height - key_list_third.height - self.height
+
 <ActionList>:
   size_hint: None, None
   canvas:
diff --git a/music_sampler.py b/music_sampler.py
index 81b96c4..5e61466 100644
--- a/music_sampler.py
+++ b/music_sampler.py
@@ -11,6 +11,23 @@ from helpers.key import Key
 from helpers.mapping import Mapping
 import helpers
 
+class KeyList(RelativeLayout):
+    keylist = ListProperty([])
+    first_key = StringProperty("")
+    second_key = StringProperty("")
+    third_key = StringProperty("")
+
+    def append(self, value):
+        self.keylist = [value] + self.keylist
+
+    def on_keylist(self, instance, new_key_list):
+        if len(self.keylist) > 0:
+            self.first_key  = self.keylist[0]
+        if len(self.keylist) > 1:
+            self.second_key = self.keylist[1]
+        if len(self.keylist) > 2:
+            self.third_key  = self.keylist[2]
+
 class PlayList(RelativeLayout):
     playlist = ListProperty([])