Fix for CPScrollView performance issue.

[#93 state:resolved]

Reviewed by ross.

AppKit/CPClipView.j

@@ -137,10 +137,7 @@ import "CPView.j"
 */
 - (void)viewBoundsChanged:(CPNotification)aNotification
 {
-    var superview = [self superview];
+    [self viewFrameChanged:aNotification];
-    
-    if([superview isKindOfClass:[CPScrollView class]])
-        [superview reflectScrolledClipView:self];
 }
 
 /*
@@ -149,9 +146,21 @@ import "CPView.j"
 */
 - (void)viewFrameChanged:(CPNotification)aNotification
 {
+    var oldScrollPoint = [self bounds].origin;
+    
+    // Call scrollToPoint: because the current scroll point may no longer make 
+    // sense given the new frame of the document view.
+    [self scrollToPoint:oldScrollPoint];
+    
+    // scrollToPoint: takes care of reflectScrollClipView: for us, so bail if 
+    // the scroll points are not equal (meaning scrollToPoint: didn't early bail).
+    if (!CGPointEqualToPoint(oldScrollPoint, [self bounds].origin))
+        return;
+
+    // ... and we're in a scroll view of course.
     var superview = [self superview];
         
-    if([superview isKindOfClass:[CPScrollView class]])
+    if ([superview isKindOfClass:[CPScrollView class]])
         [superview reflectScrolledClipView:self];
 }
 

AppKit/CPScrollView.j

@@ -227,30 +227,6 @@ import "CPScroller.j"
     
     [_contentView setFrame:contentViewFrame];
     
-    // The reason we have to do this is because this is called on a frame size change, so when the frame changes, 
-    // so does the the float value, so we have to update the clip view accordingly.
-    if (_hasVerticalScroller && (shouldShowVerticalScroller || wasShowingVerticalScroller))
-    {
-        //[self _verticalScrollerDidScroll:_verticalScroller];
-        var value = [_verticalScroller floatValue],
-            contentBounds = [_contentView bounds];
-        
-        contentBounds.origin.y = value * (_CGRectGetHeight([documentView frame]) - _CGRectGetHeight(contentBounds));
-        
-        [_contentView scrollToPoint:contentBounds.origin];
-    }
-    if (_hasHorizontalScroller && (shouldShowHorizontalScroller || wasShowingHorizontalScroller))
-    {
-        //[self _horizontalScrollerDidScroll:_horizontalScroller];
-    
-        var value = [_horizontalScroller floatValue],
-            contentBounds = [_contentView bounds];
-        
-        contentBounds.origin.x = value * (_CGRectGetWidth([documentView frame]) - _CGRectGetWidth(contentBounds));
-        
-        [_contentView scrollToPoint:contentBounds.origin];
-    }
-    
     --_recursionCount;
 }