[libgtkmusic] Fixed event signature in Vala sources.

[Leandro Resende Mattioli <lmattioli src gnome org>]

commit ef9fbd5f443aaff95d08f99431381c9dbb91a8e0
Author: Leandro Mattioli <leandro mattioli gmail com>
Date:   Sat Apr 7 01:43:35 2018 -0300

    Fixed event signature in Vala sources.

 .gitignore            |   13 -------------
 src/GuitarWidget.vala |   10 ++++------
 src/PianoWidget.vala  |   10 ++++------
 3 files changed, 8 insertions(+), 25 deletions(-)
---
diff --git a/src/GuitarWidget.vala b/src/GuitarWidget.vala
index 5a32d77..5ed1931 100644
--- a/src/GuitarWidget.vala
+++ b/src/GuitarWidget.vala
@@ -117,20 +117,18 @@ public class Guitar : DrawingArea {
     
     /**
      * Signal emitted when a note has been pressed with the mouse
-     * @param guitar The Guitar who trigerred the event
      * @param event The Gdk low level event object
      * @param pos The GuitarPosition (string and fret) of the pressed note
      */
-    public signal void note_pressed (Guitar guitar, Gdk.EventButton event,
+    public signal void note_pressed (Gdk.EventButton event,
                                      GuitarPosition pos);
                               
     /**
      * Signal emitted when a note has been released (mouse button released)
-     * @param guitar The Guitar who trigerred the event
      * @param event The Gdk low level event object
      * @param pos The GuitarPosition (string and fret) of the released note
      */
-    public signal void note_released (Guitar guitar, Gdk.EventButton event,
+    public signal void note_released (Gdk.EventButton event,
                                       GuitarPosition pos);
     
     //=========================================================================
@@ -471,7 +469,7 @@ public class Guitar : DrawingArea {
     public override bool button_press_event (Gdk.EventButton event) {
         GuitarPosition? pos = point_to_position(event.x, event.y);
         if(pos != null)
-            note_pressed(this, event, pos);
+            note_pressed(event, pos);
         return true;
     }
 
@@ -484,7 +482,7 @@ public class Guitar : DrawingArea {
     public override bool button_release_event (Gdk.EventButton event) {
         GuitarPosition? pos = point_to_position(event.x, event.y);
         if(pos != null)
-            note_released(this, event, pos);
+            note_released(event, pos);
         return true;   
     }
 
diff --git a/src/PianoWidget.vala b/src/PianoWidget.vala
index 2c5f9b7..7626a18 100644
--- a/src/PianoWidget.vala
+++ b/src/PianoWidget.vala
@@ -51,20 +51,18 @@ public class Piano : DrawingArea {
     
     /**
      * Signal emitted when a note has been pressed with the mouse
-     * @param piano The Piano who trigerred the event
      * @param event The Gdk low level event object
      * @param midi_note The MIDI value (number) of the pressed note
      */
-    public signal void note_pressed (Piano piano, Gdk.EventButton event,
+    public signal void note_pressed (Gdk.EventButton event,
                                      int midi_note); //ushort not supported?
 
     /**
      * Signal emitted when a note has been released (mouse button released)
-     * @param piano The Piano who trigerred the event
      * @param event The Gdk low level event object
      * @param midi_note The MIDI value (number) of the released note
      */
-    public signal void note_released (Piano piano, Gdk.EventButton event,
+    public signal void note_released (Gdk.EventButton event,
                                       int midi_note); //ushort not supported?
   
     //=========================================================================
@@ -323,7 +321,7 @@ public class Piano : DrawingArea {
     * emits a note_pressed signal.
     */
     public override bool button_press_event (Gdk.EventButton event) {
-        note_pressed(this, event, point_to_midi(event.x, event.y));
+        note_pressed(event, point_to_midi(event.x, event.y));
         return true;
     }
     
@@ -334,7 +332,7 @@ public class Piano : DrawingArea {
     * and emits a note_released signal.
     */
     public override bool button_release_event (Gdk.EventButton event) {
-        note_released(this, event, point_to_midi(event.x, event.y));
+        note_released(event, point_to_midi(event.x, event.y));
         return true;
     }