Refactor LfpChannelDisplayInfo to improve channel name rendering

- Makes the channel dsiplay info a single component instead of one per channel
- Prevents clipping of channel names when channel height is very small

Author: anjaldoshi

Plugins/LfpViewer/LfpChannelDisplay.cpp

@@ -690,7 +690,7 @@ void LfpChannelDisplay::drawEventOverlay (const int rawEventState, int x, int yf
     {
         if (display->getEventDisplayState (ev_ch) && (rawEventState & (1 << ev_ch)))
         {
-            g.setColour (display->channelColours[ev_ch * 2].withAlpha (0.3f));
+            g.setColour (display->channelColours[ev_ch * 2].withAlpha (0.5f));
             g.fillRect (x, yfrom, 1, yto - yfrom + 1);
         }
     }

Plugins/LfpViewer/LfpChannelDisplay.h

@@ -101,6 +101,9 @@ class LfpChannelDisplay : public Component
     /** Sets the colour for this channel's trace */
     void setColour (Colour c);
 
+    /** Returns the colour used for this channel's trace */
+    Colour getColour() const { return lineColour; }
+
     /** Sets the height for this channel */
     void setChannelHeight (int);
 
@@ -163,6 +166,9 @@ class LfpChannelDisplay : public Component
     /** Returns the enabled state for this channel*/
     bool getEnabledState() { return isEnabled; }
 
+    /** Returns whether this channel is recorded */
+    bool getRecorded() const { return isRecorded; }
+
     /** Set the isHidden flag, indicates whether this channel display
         should render to screen or not */
     void setHidden (bool);