Added methods to get and set the octave scroll button width to MidiKeyboardComponent

modules/juce_audio_utils/gui/juce_MidiKeyboardComponent.cpp

@@ -108,6 +108,17 @@ void MidiKeyboardComponent::setKeyWidth (float widthInPixels)
     }
 }
 
+void MidiKeyboardComponent::setScrollButtonWidth (int widthInPixels)
+{
+    jassert (widthInPixels > 0);
+
+    if (scrollButtonWidth != widthInPixels)
+    {
+        scrollButtonWidth = widthInPixels;
+        resized();
+    }
+}
+
 void MidiKeyboardComponent::setOrientation (Orientation newOrientation)
 {
     if (orientation != newOrientation)
@@ -610,7 +621,7 @@ void MidiKeyboardComponent::resized()
 
         if (canScroll)
         {
-            auto scrollButtonW = jmin (12, w / 2);
+            auto scrollButtonW = jmin (scrollButtonWidth, w / 2);
             auto r = getLocalBounds();
 
             if (orientation == horizontalKeyboard)

modules/juce_audio_utils/gui/juce_MidiKeyboardComponent.h

@@ -129,6 +129,12 @@ public:
     /** Returns the width that was set by setKeyWidth(). */
     float getKeyWidth() const noexcept                              { return keyWidth; }
 
+    /** Changes the width used to draw the buttons that scroll the keyboard up/down in octaves. */
+    void setScrollButtonWidth (int widthInPixels);
+
+    /** Returns the width that was set by setScrollButtonWidth(). */
+    int getScrollButtonWidth() const noexcept                       { return scrollButtonWidth; };
+
     /** Changes the keyboard's current direction. */
     void setOrientation (Orientation newOrientation);
 
@@ -396,6 +402,7 @@ private:
     float blackNoteWidthRatio = 0.7f;
     float xOffset = 0;
     float keyWidth = 16.0f;
+    int scrollButtonWidth = 12;
     Orientation orientation;
 
     int midiChannel = 1, midiInChannelMask = 0xffff;