fix the error that path is inversed for stroke and strokeAndFill styles

src/core/SkStroke.cpp

 /*
  * Copyright 2008 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkStrokerPriv.h"
 #include "SkGeometry.h"
 #include "SkPath.h"
@@ skipping 544 matching lines @@
     if (radius <= 0) {
         return;
     }
 
     // If src is really a rect, call our specialty strokeRect() method
     {
         bool isClosed;
         SkPath::Direction dir;
         if (src.isRect(&isClosed, &dir) && isClosed) {
             this->strokeRect(src.getBounds(), dst, dir);
-            // our answer should preserve the inverseness of the src
-            if (src.isInverseFillType()) {
+            // our answer should preserve the inverseness of the src, but the
+            // rect should not be inverse-stroked.
+            if (src.isInverseFillType() && fWidth < 0) {
                 SkASSERT(!dst->isInverseFillType());
                 dst->toggleInverseFillType();
             }
             return;
         }
     }
 
     SkAutoConicToQuads converter;
     const SkScalar conicTol = SK_Scalar1 / 4;
 
@@ skipping 62 matching lines @@
             canvas->drawLine(pts[0].fX, pts[0].fY, pts[1].fX, pts[1].fY, paint);
         }
 #endif
 #if 0
         if (2 == src.countPoints()) {
             dst->setIsConvex(true);
         }
 #endif
     }
 
-    // our answer should preserve the inverseness of the src
-    if (src.isInverseFillType()) {
+    // our answer should preserve the inverseness of the src, but the path
+    // should not be inverse-stroked.
+    if (src.isInverseFillType() && fWidth < 0) {
         SkASSERT(!dst->isInverseFillType());
         dst->toggleInverseFillType();
     }
 }
 
 static SkPath::Direction reverse_direction(SkPath::Direction dir) {
     SkASSERT(SkPath::kUnknown_Direction != dir);
     return SkPath::kCW_Direction == dir ? SkPath::kCCW_Direction : SkPath::kCW_Direction;
 }
 
@@ skipping 64 matching lines @@
         default:
             break;
     }
 
     if (fWidth < SkMinScalar(rw, rh) && !fDoFill) {
         r = rect;
         r.inset(radius, radius);
         dst->addRect(r, reverse_direction(dir));
     }
 }