E_showMenu_/E_showScroller_Q3: forward touch event

The goal was to make it possible for menus to distinguish between short
and long touches when the entry maps to a function.

With this alarms in the `alarm` app could be made togglable by longpressing
corresponding menu entries.

ChangeLog

@@ -39,6 +39,7 @@
             jsvObjectIterator is now safe even if not called on something iterable
             X.on now always allocates an array - tidies up code (fix #2559)
             Bangle.js: E.showMenu no longer sends the internal `l` menu object as argument when running the callback function.
+            Bangle.js2: Pass the modified touch event on through both E.showScroller and E.showMenu (to enable more complex interaction with menus).
 
      2v24 : Bangle.js2: Add 'Bangle.touchRd()', 'Bangle.touchWr()'
             Bangle.js2: After Bangle.showTestScreen, put Bangle.js into a hard off state (not soft off)

libs/banglejs/jswrap_bangle.c

@@ -5904,6 +5904,10 @@ On Bangle.js there are a few additions over the standard `graphical_menu`:
     menu is removed
   * (Bangle.js 2) `scroll : int` - an integer specifying how much the initial
     menu should be scrolled by
+* (Bangle.js 2) The mapped functions can consider the touch event that interacted with the entry:
+  `"Entry" : function(touch) { ... }`
+  * This is also true of `onchange` mapped functions in entry objects:
+    `onchange : (value, touch) => { ... }`
 * The object returned by `E.showMenu` contains:
   * (Bangle.js 2) `scroller` - the object returned by `E.showScroller` -
     `scroller.scroll` returns the amount the menu is currently scrolled by
@@ -6046,6 +6050,7 @@ Supply an object containing:
   draw : function(idx, rect) { ... }
   // a function to call when the item is selected, touch parameter is only relevant
   // for Bangle.js 2 and contains the coordinates touched inside the selected item
+  // as well as the type of the touch - see `Bangle.touch`.
   select : function(idx, touch) { ... }
   // optional function to be called when 'back' is tapped
   back : function() { ...}

libs/js/banglejs/E_showMenu_Q3.js

@@ -133,19 +133,19 @@
         l = g.setFont("6x15").wrapString(title,r.w-pad);
       g.setFontAlign(-1,0).drawString(l.join("\n"), r.x+12, r.y+H/2);
     },
-    select : function(idx) {
+    select : function(idx, touch) {
       if (idx<0) return back&&back(); // title
       var item = menu[keys[idx]];
       Bangle.buzz(20);
-      if ("function" == typeof item) item();
+      if ("function" == typeof item) item(touch);
       else if ("object" == typeof item) {
-        // if a bool, just toggle it
         if ("number" == typeof item.value) {
           showSubMenu(item, keys[idx]);
         } else {
+          // if a bool, just toggle it
           if ("boolean"==typeof item.value)
             item.value=!item.value;
-          if (item.onchange) item.onchange(item.value);
+          if (item.onchange) item.onchange(item.value, touch);
           if (l.scroller.isActive()) l.scroller.drawItem(idx);
         }
       }

libs/js/banglejs/E_showScroller_Q3.js

@@ -82,7 +82,7 @@ Bangle.setUI({
     }
     if ((menuScrollMin<0 || i>=0) && i<options.c){
       //console.log("Press ",e.y,i,yInElement);
-      options.select(i, {x:e.x, y:yInElement});
+      options.select(i, {x:e.x, y:yInElement, type:e.type});
     }
   }
 });