Update Marker Widget UI to improve UDP receiver textfield appearance

Author: retiutut

OpenBCI_GUI/Extras.pde

@@ -292,11 +292,14 @@ String getIpAddrFromStr(String strWithIP) {
     }
 }
 
-float getFontStringHeight(PFont _font, String string) {
+float getFontStringHeight(PFont font, String text) {
+    if (text == null) {
+        return 0;
+    }
     float minY = Float.MAX_VALUE;
     float maxY = Float.NEGATIVE_INFINITY;
-    for (Character c : string.toCharArray()) {
-        PShape character = _font.getShape(c); // create character vector
+    for (Character c : text.toCharArray()) {
+        PShape character = font.getShape(c); // create character vector
         for (int i = 0; i < character.getVertexCount(); i++) {
             minY = min(character.getVertex(i).y, minY);
             maxY = max(character.getVertex(i).y, maxY);

OpenBCI_GUI/Grid.pde

@@ -42,7 +42,7 @@ class Grid {
         pushStyle();
         textAlign(LEFT);        
         stroke(OPENBCI_DARKBLUE);
-        textFont(p5, 12);
+        textFont(tableFont, tableFontSize);
 
         if (drawTableInnerLines) {
             // draw row lines