Improved SkPathRef interface security

tests/PathTest.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 "Test.h"
 #include "TestClassDef.h"
 #include "SkCanvas.h"
@@ skipping 2661 matching lines @@
     static const SkPath::Direction kCircleDir = SkPath::kCW_Direction;
     static const SkPath::Direction kCircleDirOpposite = SkPath::kCCW_Direction;
 
     circle.addCircle(0, 0, SkIntToScalar(10), kCircleDir);
     rect.addRect(SkIntToScalar(5), SkIntToScalar(5),
                  SkIntToScalar(20), SkIntToScalar(20), SkPath::kCW_Direction);
 
     SkMatrix translate;
     translate.setTranslate(SkIntToScalar(12), SkIntToScalar(12));
 
-    // For simplicity, all the path concatenation related operations
-    // would mark it non-circle, though in theory it's still a circle.
+    // Although all the path concatenation related operations leave
+    // the path a circle, most mark it as a non-circle for simplicity
 
     // empty + circle (translate)
     path = empty;
     path.addPath(circle, translate);
     check_for_circle(reporter, path, false, kCircleDir);
 
     // circle + empty (translate)
     path = circle;
     path.addPath(empty, translate);
-    check_for_circle(reporter, path, false, kCircleDir);
+    check_for_circle(reporter, path, true, kCircleDir);
 
     // test reverseAddPath
     path = circle;
     path.reverseAddPath(rect);
     check_for_circle(reporter, path, false, kCircleDirOpposite);
 }
 
 static void test_circle(skiatest::Reporter* reporter) {
     test_circle_with_direction(reporter, SkPath::kCW_Direction);
     test_circle_with_direction(reporter, SkPath::kCCW_Direction);
@@ skipping 427 matching lines @@
         p.setFillType(SkPath::kEvenOdd_FillType);
         p.moveTo(pts[i].fX, pts[i].fY);
         p.cubicTo(pts[i + 1].fX, pts[i + 1].fY, pts[i + 2].fX, pts[i + 2].fY, pts[i + 3].fX, pts[i + 3].fY);
         p.cubicTo(pts[i + 4].fX, pts[i + 4].fY, pts[i + 5].fX, pts[i + 5].fY, pts[i + 6].fX, pts[i + 6].fY);
         p.close();
         REPORTER_ASSERT(reporter, p.contains(5.5f, 5.5f));
         REPORTER_ASSERT(reporter, !p.contains(4.5f, 5.5f));
     }
 }
 
+class TestingPathRefCreator {
+public:
+    static SkPathRef* Create() {
+        return SkNEW(SkPathRef);
+    }
+};
+
 static void test_pathref(skiatest::Reporter* reporter) {
     static const int kRepeatCnt = 10;
 
-    SkPathRef* pathRef = SkPathRef::CreateEmpty();
-    SkAutoTUnref<SkPathRef> pathRef2(SkPathRef::CreateEmpty());
-    SkMatrix mat;
+    SkAutoTUnref<SkPathRef> pathRef(TestingPathRefCreator::Create());
 
-    mat.setTranslate(10, 10);
-
-    SkPathRef::CreateTransformedCopy(&pathRef2, *pathRef, mat);
-
-    SkPathRef::Editor ed(&pathRef2);
+    SkPathRef::Editor ed(&pathRef);
 
     {
         ed.growForRepeatedVerb(SkPath::kMove_Verb, kRepeatCnt);
-        REPORTER_ASSERT(reporter, kRepeatCnt == pathRef2->countVerbs());
-        REPORTER_ASSERT(reporter, kRepeatCnt == pathRef2->countPoints());
-        REPORTER_ASSERT(reporter, 0 == pathRef2->getSegmentMasks());
+        REPORTER_ASSERT(reporter, kRepeatCnt == pathRef->countVerbs());
+        REPORTER_ASSERT(reporter, kRepeatCnt == pathRef->countPoints());
+        REPORTER_ASSERT(reporter, 0 == pathRef->getSegmentMasks());
         for (int i = 0; i < kRepeatCnt; ++i) {
-            REPORTER_ASSERT(reporter, SkPath::kMove_Verb == pathRef2->atVerb(i));
+            REPORTER_ASSERT(reporter, SkPath::kMove_Verb == pathRef->atVerb(i));
         }
         ed.resetToSize(0, 0, 0);
     }
 
     {
         ed.growForRepeatedVerb(SkPath::kLine_Verb, kRepeatCnt);
-        REPORTER_ASSERT(reporter, kRepeatCnt == pathRef2->countVerbs());
-        REPORTER_ASSERT(reporter, kRepeatCnt == pathRef2->countPoints());
-        REPORTER_ASSERT(reporter, SkPath::kLine_SegmentMask == pathRef2->getSegmentMasks());
+        REPORTER_ASSERT(reporter, kRepeatCnt == pathRef->countVerbs());
+        REPORTER_ASSERT(reporter, kRepeatCnt == pathRef->countPoints());
+        REPORTER_ASSERT(reporter, SkPath::kLine_SegmentMask == pathRef->getSegmentMasks());
         for (int i = 0; i < kRepeatCnt; ++i) {
-            REPORTER_ASSERT(reporter, SkPath::kLine_Verb == pathRef2->atVerb(i));
+            REPORTER_ASSERT(reporter, SkPath::kLine_Verb == pathRef->atVerb(i));
         }
         ed.resetToSize(0, 0, 0);
     }
 
     {
         ed.growForRepeatedVerb(SkPath::kQuad_Verb, kRepeatCnt);
-        REPORTER_ASSERT(reporter, kRepeatCnt == pathRef2->countVerbs());
-        REPORTER_ASSERT(reporter, 2*kRepeatCnt == pathRef2->countPoints());
-        REPORTER_ASSERT(reporter, SkPath::kQuad_SegmentMask == pathRef2->getSegmentMasks());
+        REPORTER_ASSERT(reporter, kRepeatCnt == pathRef->countVerbs());
+        REPORTER_ASSERT(reporter, 2*kRepeatCnt == pathRef->countPoints());
+        REPORTER_ASSERT(reporter, SkPath::kQuad_SegmentMask == pathRef->getSegmentMasks());
         for (int i = 0; i < kRepeatCnt; ++i) {
-            REPORTER_ASSERT(reporter, SkPath::kQuad_Verb == pathRef2->atVerb(i));
+            REPORTER_ASSERT(reporter, SkPath::kQuad_Verb == pathRef->atVerb(i));
         }
         ed.resetToSize(0, 0, 0);
     }
 
     {
         SkScalar* weights = NULL;
         ed.growForRepeatedVerb(SkPath::kConic_Verb, kRepeatCnt, &weights);
-        REPORTER_ASSERT(reporter, kRepeatCnt == pathRef2->countVerbs());
-        REPORTER_ASSERT(reporter, 2*kRepeatCnt == pathRef2->countPoints());
-        REPORTER_ASSERT(reporter, kRepeatCnt == pathRef2->countWeights());
-        REPORTER_ASSERT(reporter, SkPath::kConic_SegmentMask == pathRef2->getSegmentMasks());
+        REPORTER_ASSERT(reporter, kRepeatCnt == pathRef->countVerbs());
+        REPORTER_ASSERT(reporter, 2*kRepeatCnt == pathRef->countPoints());
+        REPORTER_ASSERT(reporter, kRepeatCnt == pathRef->countWeights());
+        REPORTER_ASSERT(reporter, SkPath::kConic_SegmentMask == pathRef->getSegmentMasks());
         REPORTER_ASSERT(reporter, NULL != weights);
         for (int i = 0; i < kRepeatCnt; ++i) {
-            REPORTER_ASSERT(reporter, SkPath::kConic_Verb == pathRef2->atVerb(i));
+            REPORTER_ASSERT(reporter, SkPath::kConic_Verb == pathRef->atVerb(i));
         }
         ed.resetToSize(0, 0, 0);
     }
 
     {
         ed.growForRepeatedVerb(SkPath::kCubic_Verb, kRepeatCnt);
-        REPORTER_ASSERT(reporter, kRepeatCnt == pathRef2->countVerbs());
-        REPORTER_ASSERT(reporter, 3*kRepeatCnt == pathRef2->countPoints());
-        REPORTER_ASSERT(reporter, SkPath::kCubic_SegmentMask == pathRef2->getSegmentMasks());
+        REPORTER_ASSERT(reporter, kRepeatCnt == pathRef->countVerbs());
+        REPORTER_ASSERT(reporter, 3*kRepeatCnt == pathRef->countPoints());
+        REPORTER_ASSERT(reporter, SkPath::kCubic_SegmentMask == pathRef->getSegmentMasks());
         for (int i = 0; i < kRepeatCnt; ++i) {
-            REPORTER_ASSERT(reporter, SkPath::kCubic_Verb == pathRef2->atVerb(i));
+            REPORTER_ASSERT(reporter, SkPath::kCubic_Verb == pathRef->atVerb(i));
         }
         ed.resetToSize(0, 0, 0);
     }
 }
 
 static void test_operatorEqual(skiatest::Reporter* reporter) {
     SkPath a;
     SkPath b;
     REPORTER_ASSERT(reporter, a == a);
     REPORTER_ASSERT(reporter, a == b);
@@ skipping 147 matching lines @@
     test_rrect(reporter);
     test_arc(reporter);
     test_arcTo(reporter);
     test_addPath(reporter);
     test_conicTo_special_case(reporter);
     test_get_point(reporter);
     test_contains(reporter);
     test_pathref(reporter);
     PathTest_Private::TestPathTo(reporter);
 }