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/*
* Copyright 2014 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "SkDeque.h"
#include "SkLayerRasterizer.h"
#include "SkPaint.h"
#include "SkRasterizer.h"
#include "Test.h"
class SkReadBuffer;
// Dummy class to place on a paint just to ensure the paint's destructor
// is called.
// ONLY to be used by LayerRasterizer_destructor, since other tests may
// be run in a separate thread, and this class is not threadsafe.
class DummyRasterizer : public SkRasterizer {
public:
DummyRasterizer()
: INHERITED()
{
// Not threadsafe. Only used in one thread.
gCount++;
}
~DummyRasterizer() {
// Not threadsafe. Only used in one thread.
gCount--;
}
static int GetCount() { return gCount; }
SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(DummyRasterizer)
private:
static int gCount;
typedef SkRasterizer INHERITED;
};
int DummyRasterizer::gCount;
sk_sp<SkFlattenable> DummyRasterizer::CreateProc(SkReadBuffer&) {
return sk_make_sp<DummyRasterizer>();
}
// Check to make sure that the SkPaint in the layer has its destructor called.
DEF_TEST(LayerRasterizer_destructor, reporter) {
{
SkPaint paint;
paint.setRasterizer(sk_make_sp<DummyRasterizer>());
REPORTER_ASSERT(reporter, DummyRasterizer::GetCount() == 1);
SkLayerRasterizer::Builder builder;
builder.addLayer(paint);
}
REPORTER_ASSERT(reporter, DummyRasterizer::GetCount() == 0);
}
class LayerRasterizerTester {
public:
static int CountLayers(const SkLayerRasterizer& layerRasterizer) {
return layerRasterizer.fLayers->count();
}
static const SkDeque& GetLayers(const SkLayerRasterizer& layerRasterizer) {
return *layerRasterizer.fLayers;
}
};
// MUST stay in sync with definition of SkLayerRasterizer_Rec in SkLayerRasterizer.cpp.
struct SkLayerRasterizer_Rec {
SkPaint fPaint;
SkVector fOffset;
};
static bool equals(const SkLayerRasterizer_Rec& rec1, const SkLayerRasterizer_Rec& rec2) {
return rec1.fPaint == rec2.fPaint && rec1.fOffset == rec2.fOffset;
}
DEF_TEST(LayerRasterizer_copy, reporter) {
SkLayerRasterizer::Builder builder;
REPORTER_ASSERT(reporter, nullptr == builder.snapshot());
SkPaint paint;
// Create a bunch of paints with different flags.
for (uint32_t flags = 0x01; flags < SkPaint::kAllFlags; flags <<= 1) {
paint.setFlags(flags);
builder.addLayer(paint, static_cast<SkScalar>(flags), static_cast<SkScalar>(flags));
}
// Create a layer rasterizer with all the existing layers.
sk_sp<SkLayerRasterizer> firstCopy(builder.snapshot());
// Add one more layer.
paint.setFlags(SkPaint::kAllFlags);
builder.addLayer(paint);
sk_sp<SkLayerRasterizer> oneLarger(builder.snapshot());
sk_sp<SkLayerRasterizer> detached(builder.detach());
// Check the counts for consistency.
const int largerCount = LayerRasterizerTester::CountLayers(*oneLarger.get());
const int smallerCount = LayerRasterizerTester::CountLayers(*firstCopy.get());
REPORTER_ASSERT(reporter, largerCount == LayerRasterizerTester::CountLayers(*detached.get()));
REPORTER_ASSERT(reporter, smallerCount == largerCount - 1);
const SkLayerRasterizer_Rec* recFirstCopy = nullptr;
const SkLayerRasterizer_Rec* recOneLarger = nullptr;
const SkLayerRasterizer_Rec* recDetached = nullptr;
const SkDeque& layersFirstCopy = LayerRasterizerTester::GetLayers(*firstCopy.get());
const SkDeque& layersOneLarger = LayerRasterizerTester::GetLayers(*oneLarger.get());
const SkDeque& layersDetached = LayerRasterizerTester::GetLayers(*detached.get());
// Ensure that our version of SkLayerRasterizer_Rec is the same as the one in
// SkLayerRasterizer.cpp - or at least the same size. If the order were switched, we
// would fail the test elsewhere.
REPORTER_ASSERT(reporter, layersFirstCopy.elemSize() == sizeof(SkLayerRasterizer_Rec));
REPORTER_ASSERT(reporter, layersOneLarger.elemSize() == sizeof(SkLayerRasterizer_Rec));
REPORTER_ASSERT(reporter, layersDetached.elemSize() == sizeof(SkLayerRasterizer_Rec));
SkDeque::F2BIter iterFirstCopy(layersFirstCopy);
SkDeque::F2BIter iterOneLarger(layersOneLarger);
SkDeque::F2BIter iterDetached(layersDetached);
for (int i = 0; i < largerCount; ++i) {
recFirstCopy = static_cast<const SkLayerRasterizer_Rec*>(iterFirstCopy.next());
recOneLarger = static_cast<const SkLayerRasterizer_Rec*>(iterOneLarger.next());
recDetached = static_cast<const SkLayerRasterizer_Rec*>(iterDetached.next());
REPORTER_ASSERT(reporter, equals(*recOneLarger, *recDetached));
if (smallerCount == i) {
REPORTER_ASSERT(reporter, recFirstCopy == nullptr);
} else {
REPORTER_ASSERT(reporter, equals(*recFirstCopy, *recOneLarger));
}
}
}
DEF_TEST(LayerRasterizer_detachEmpty, reporter) {
SkLayerRasterizer::Builder builder;
REPORTER_ASSERT(reporter, nullptr == builder.detach());
}
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