50 lines
1.6 KiB
C++
50 lines
1.6 KiB
C++
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#include "Test.h"
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#include "TestClassDef.h"
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#include "SkPixelRef.h"
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#include "SkMallocPixelRef.h"
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namespace {
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class TestListener : public SkPixelRef::GenIDChangeListener {
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public:
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explicit TestListener(int* ptr) : fPtr(ptr) {}
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void onChange() SK_OVERRIDE { (*fPtr)++; }
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private:
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int* fPtr;
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};
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} // namespace
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DEF_TEST(PixelRef_GenIDChange, r) {
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SkMallocPixelRef pixelRef(NULL, 0, NULL); // We don't really care about the pixels here.
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// Register a listener.
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int count = 0;
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pixelRef.addGenIDChangeListener(SkNEW_ARGS(TestListener, (&count)));
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REPORTER_ASSERT(r, 0 == count);
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// No one has looked at our pixelRef's generation ID, so invalidating it doesn't make sense.
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// (An SkPixelRef tree falls in the forest but there's nobody around to hear it. Do we care?)
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pixelRef.notifyPixelsChanged();
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REPORTER_ASSERT(r, 0 == count);
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// Force the generation ID to be calculated.
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REPORTER_ASSERT(r, 0 != pixelRef.getGenerationID());
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// Our listener was dropped in the first call to notifyPixelsChanged(). This is a no-op.
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pixelRef.notifyPixelsChanged();
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REPORTER_ASSERT(r, 0 == count);
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// Force the generation ID to be recalculated, then add a listener.
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REPORTER_ASSERT(r, 0 != pixelRef.getGenerationID());
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pixelRef.addGenIDChangeListener(SkNEW_ARGS(TestListener, (&count)));
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pixelRef.notifyPixelsChanged();
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REPORTER_ASSERT(r, 1 == count);
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// Quick check that NULL is safe.
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REPORTER_ASSERT(r, 0 != pixelRef.getGenerationID());
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pixelRef.addGenIDChangeListener(NULL);
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pixelRef.notifyPixelsChanged();
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}
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