1 #include "Test.h" 2 3 #include "SkMallocPixelRef.h" 4 #include "SkPixelRef.h" 5 6 class TestListener : public SkPixelRef::GenIDChangeListener { 7 public: 8 explicit TestListener(int* ptr) : fPtr(ptr) {} 9 virtual void onChange() SK_OVERRIDE { (*fPtr)++; } 10 private: 11 int* fPtr; 12 }; 13 14 DEF_TEST(PixelRef_GenIDChange, r) { 15 SkImageInfo info = SkImageInfo::MakeN32Premul(10, 10); 16 17 SkAutoTUnref<SkPixelRef> pixelRef(SkMallocPixelRef::NewAllocate(info, 0, NULL)); 18 19 // Register a listener. 20 int count = 0; 21 pixelRef->addGenIDChangeListener(SkNEW_ARGS(TestListener, (&count))); 22 REPORTER_ASSERT(r, 0 == count); 23 24 // No one has looked at our pixelRef's generation ID, so invalidating it doesn't make sense. 25 // (An SkPixelRef tree falls in the forest but there's nobody around to hear it. Do we care?) 26 pixelRef->notifyPixelsChanged(); 27 REPORTER_ASSERT(r, 0 == count); 28 29 // Force the generation ID to be calculated. 30 REPORTER_ASSERT(r, 0 != pixelRef->getGenerationID()); 31 32 // Our listener was dropped in the first call to notifyPixelsChanged(). This is a no-op. 33 pixelRef->notifyPixelsChanged(); 34 REPORTER_ASSERT(r, 0 == count); 35 36 // Force the generation ID to be recalculated, then add a listener. 37 REPORTER_ASSERT(r, 0 != pixelRef->getGenerationID()); 38 pixelRef->addGenIDChangeListener(SkNEW_ARGS(TestListener, (&count))); 39 pixelRef->notifyPixelsChanged(); 40 REPORTER_ASSERT(r, 1 == count); 41 42 // Quick check that NULL is safe. 43 REPORTER_ASSERT(r, 0 != pixelRef->getGenerationID()); 44 pixelRef->addGenIDChangeListener(NULL); 45 pixelRef->notifyPixelsChanged(); 46 } 47
