revert previous scrolling optimization

nvmd, I'm so stupid ;-)

HISTORY.md

@@ -25,7 +25,6 @@
 * gui: accelerated unified palette scrolling animation
 * adjust scroll bars when refreshing the palette
 * store: commented out saving the unified palette setting in the project xml during development
-* morphic: optimized Morph >> scrollIntoView()
 
 ### 2021-07-07
 * morphic, gui: tweaked perish() animation

src/morphic.js

@@ -1291,7 +1291,7 @@
 
 /*jshint esversion: 6*/
 
-var morphicVersion = '2021-July-08';
+var morphicVersion = '2021-July-07';
 var modules = {}; // keep track of additional loaded modules
 var useBlurredShadows = true;
 
@@ -3422,26 +3422,24 @@ Morph.prototype.keepWithin = function (aMorph) {
 
 Morph.prototype.scrollIntoView = function () {
     var leftOff, rightOff, topOff, bottomOff,
-        sf = this.parentThatIsA(ScrollFrameMorph),
-        fb;
+        sf = this.parentThatIsA(ScrollFrameMorph);
     if (!sf) {return; }
-    fb = this.fullBounds();
     rightOff = Math.min(
-        fb.right() - sf.right(),
+        this.fullBounds().right() - sf.right(),
         sf.contents.right() - sf.right()
     );
     if (rightOff > 0) {
         sf.contents.moveBy(new Point(-rightOff, 0));
     }
-    leftOff = fb.left() - sf.left();
+    leftOff = this.fullBounds().left() - sf.left();
     if (leftOff < 0) {
         sf.contents.moveBy(new Point(-leftOff, 0));
     }
-    topOff = fb.top() - sf.top();
+    topOff = this.fullBounds().top() - sf.top();
     if (topOff < 0) {
         sf.contents.moveBy(new Point(0, -topOff));
     }
-    bottomOff = fb.bottom() - sf.bottom();
+    bottomOff = this.fullBounds().bottom() - sf.bottom();
     if (bottomOff > 0) {
         sf.contents.moveBy(new Point(0, -bottomOff));
     }