Outset the stroke width when computing the bounds for drawing a stroked rect, or 1 if it's a hairli…

src/core/SkDraw.cpp

 /*
  * Copyright 2006 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 "SkDraw.h"
 #include "SkBlitter.h"
 #include "SkCanvas.h"
@@ skipping 799 matching lines @@
 
     // transform rect into devRect
     matrix.mapPoints(rect_points(devRect), rect_points(rect), 2);
     devRect.sort();
 
     // look for the quick exit, before we build a blitter
     SkIRect ir;
     devRect.roundOut(&ir);
     if (paint.getStyle() != SkPaint::kFill_Style) {
         // extra space for hairlines
-        ir.inset(-1, -1);
+        if (paint.getStrokeWidth() == 0) {
+            ir.outset(1, 1);
+        } else {
+            SkScalar radius = SkScalarHalf(paint.getStrokeWidth());
+            ir.outset(radius, radius);
+        }
     }
     if (fRC->quickReject(ir)) {
         return;
     }
 
     SkDeviceLooper looper(*fBitmap, *fRC, ir, paint.isAntiAlias());
     while (looper.next()) {
         SkRect localDevRect;
         looper.mapRect(&localDevRect, devRect);
         SkMatrix localMatrix;
@@ skipping 1542 matching lines @@
         mask->fImage = SkMask::AllocImage(size);
         memset(mask->fImage, 0, mask->computeImageSize());
     }
 
     if (SkMask::kJustComputeBounds_CreateMode != mode) {
         draw_into_mask(*mask, devPath, style);
     }
 
     return true;
 }