add interactive xfer sample

src/views/SkView.cpp

 
 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 #include "SkView.h"
 #include "SkCanvas.h"
 
@@ skipping 360 matching lines @@
 
 SkView::Click* SkView::findClickHandler(SkScalar x, SkScalar y, unsigned modi) {
     if (x < 0 || y < 0 || x >= fWidth || y >= fHeight) {
         return nullptr;
     }
 
     if (this->onSendClickToChildren(x, y, modi)) {
         F2BIter    iter(this);
         SkView*    child;
 
-        while ((child = iter.next()) != nullptr)
-        {
+        while ((child = iter.next()) != nullptr) {
             SkPoint p;
+#if 0
             if (!child->globalToLocal(x, y, &p)) {
                 continue;
             }
+#else
+            // the above seems broken, so just respecting fLoc for now <reed>
+            p.set(x - child->fLoc.x(), y - child->fLoc.y());
+#endif
 
             Click* click = child->findClickHandler(p.fX, p.fY, modi);
 
             if (click) {
                 return click;
             }
         }
     }
 
     return this->onFindClickHandler(x, y, modi);
@@ skipping 437 matching lines @@
         SkDebugf(" />\n");
     }
 }
 
 void SkView::dump(bool recurse) const
 {
     dumpview(this, 0, recurse);
 }
 
 #endif