Initial import of Cobalt 2.8885 2016-07-27
diff --git a/src/third_party/skia/tests/LayerDrawLooperTest.cpp b/src/third_party/skia/tests/LayerDrawLooperTest.cpp
new file mode 100644
index 0000000..bc76a02
--- /dev/null
+++ b/src/third_party/skia/tests/LayerDrawLooperTest.cpp
@@ -0,0 +1,168 @@
+/*
+ * Copyright 2013 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "SkBitmap.h"
+#include "SkBitmapDevice.h"
+#include "SkCanvas.h"
+#include "SkDraw.h"
+#include "SkLayerDrawLooper.h"
+#include "SkMatrix.h"
+#include "SkPaint.h"
+#include "SkRect.h"
+#include "SkRefCnt.h"
+#include "SkScalar.h"
+#include "SkSmallAllocator.h"
+#include "SkXfermode.h"
+#include "Test.h"
+
+static SkBitmap make_bm(int w, int h) {
+ SkBitmap bm;
+ bm.allocN32Pixels(w, h);
+ return bm;
+}
+
+class FakeDevice : public SkBitmapDevice {
+public:
+ FakeDevice() : SkBitmapDevice(make_bm(100, 100)) { }
+
+ virtual void drawRect(const SkDraw& draw, const SkRect& r,
+ const SkPaint& paint) SK_OVERRIDE {
+ fLastMatrix = *draw.fMatrix;
+ this->INHERITED::drawRect(draw, r, paint);
+ }
+
+ SkMatrix fLastMatrix;
+
+private:
+ typedef SkBitmapDevice INHERITED;
+};
+
+static void test_frontToBack(skiatest::Reporter* reporter) {
+ SkLayerDrawLooper::Builder looperBuilder;
+ SkLayerDrawLooper::LayerInfo layerInfo;
+
+ // Add the front layer, with the defaults.
+ (void)looperBuilder.addLayer(layerInfo);
+
+ // Add the back layer, with some layer info set.
+ layerInfo.fOffset.set(10.0f, 20.0f);
+ layerInfo.fPaintBits |= SkLayerDrawLooper::kXfermode_Bit;
+ SkPaint* layerPaint = looperBuilder.addLayer(layerInfo);
+ layerPaint->setXfermodeMode(SkXfermode::kSrc_Mode);
+
+ FakeDevice device;
+ SkCanvas canvas(&device);
+ SkPaint paint;
+ SkAutoTUnref<SkLayerDrawLooper> looper(looperBuilder.detachLooper());
+ SkSmallAllocator<1, 32> allocator;
+ void* buffer = allocator.reserveT<SkDrawLooper::Context>(looper->contextSize());
+ SkDrawLooper::Context* context = looper->createContext(&canvas, buffer);
+
+ // The back layer should come first.
+ REPORTER_ASSERT(reporter, context->next(&canvas, &paint));
+ REPORTER_ASSERT(reporter, SkXfermode::IsMode(paint.getXfermode(), SkXfermode::kSrc_Mode));
+ canvas.drawRect(SkRect::MakeWH(50.0f, 50.0f), paint);
+ REPORTER_ASSERT(reporter, 10.0f == device.fLastMatrix.getTranslateX());
+ REPORTER_ASSERT(reporter, 20.0f == device.fLastMatrix.getTranslateY());
+ paint.reset();
+
+ // Then the front layer.
+ REPORTER_ASSERT(reporter, context->next(&canvas, &paint));
+ REPORTER_ASSERT(reporter, SkXfermode::IsMode(paint.getXfermode(), SkXfermode::kSrcOver_Mode));
+ canvas.drawRect(SkRect::MakeWH(50.0f, 50.0f), paint);
+ REPORTER_ASSERT(reporter, 0.0f == device.fLastMatrix.getTranslateX());
+ REPORTER_ASSERT(reporter, 0.0f == device.fLastMatrix.getTranslateY());
+
+ // Only two layers were added, so that should be the end.
+ REPORTER_ASSERT(reporter, !context->next(&canvas, &paint));
+}
+
+static void test_backToFront(skiatest::Reporter* reporter) {
+ SkLayerDrawLooper::Builder looperBuilder;
+ SkLayerDrawLooper::LayerInfo layerInfo;
+
+ // Add the back layer, with the defaults.
+ (void)looperBuilder.addLayerOnTop(layerInfo);
+
+ // Add the front layer, with some layer info set.
+ layerInfo.fOffset.set(10.0f, 20.0f);
+ layerInfo.fPaintBits |= SkLayerDrawLooper::kXfermode_Bit;
+ SkPaint* layerPaint = looperBuilder.addLayerOnTop(layerInfo);
+ layerPaint->setXfermodeMode(SkXfermode::kSrc_Mode);
+
+ FakeDevice device;
+ SkCanvas canvas(&device);
+ SkPaint paint;
+ SkAutoTUnref<SkLayerDrawLooper> looper(looperBuilder.detachLooper());
+ SkSmallAllocator<1, 32> allocator;
+ void* buffer = allocator.reserveT<SkDrawLooper::Context>(looper->contextSize());
+ SkDrawLooper::Context* context = looper->createContext(&canvas, buffer);
+
+ // The back layer should come first.
+ REPORTER_ASSERT(reporter, context->next(&canvas, &paint));
+ REPORTER_ASSERT(reporter, SkXfermode::IsMode(paint.getXfermode(), SkXfermode::kSrcOver_Mode));
+ canvas.drawRect(SkRect::MakeWH(50.0f, 50.0f), paint);
+ REPORTER_ASSERT(reporter, 0.0f == device.fLastMatrix.getTranslateX());
+ REPORTER_ASSERT(reporter, 0.0f == device.fLastMatrix.getTranslateY());
+ paint.reset();
+
+ // Then the front layer.
+ REPORTER_ASSERT(reporter, context->next(&canvas, &paint));
+ REPORTER_ASSERT(reporter, SkXfermode::IsMode(paint.getXfermode(), SkXfermode::kSrc_Mode));
+ canvas.drawRect(SkRect::MakeWH(50.0f, 50.0f), paint);
+ REPORTER_ASSERT(reporter, 10.0f == device.fLastMatrix.getTranslateX());
+ REPORTER_ASSERT(reporter, 20.0f == device.fLastMatrix.getTranslateY());
+
+ // Only two layers were added, so that should be the end.
+ REPORTER_ASSERT(reporter, !context->next(&canvas, &paint));
+}
+
+static void test_mixed(skiatest::Reporter* reporter) {
+ SkLayerDrawLooper::Builder looperBuilder;
+ SkLayerDrawLooper::LayerInfo layerInfo;
+
+ // Add the back layer, with the defaults.
+ (void)looperBuilder.addLayer(layerInfo);
+
+ // Add the front layer, with some layer info set.
+ layerInfo.fOffset.set(10.0f, 20.0f);
+ layerInfo.fPaintBits |= SkLayerDrawLooper::kXfermode_Bit;
+ SkPaint* layerPaint = looperBuilder.addLayerOnTop(layerInfo);
+ layerPaint->setXfermodeMode(SkXfermode::kSrc_Mode);
+
+ FakeDevice device;
+ SkCanvas canvas(&device);
+ SkPaint paint;
+ SkAutoTUnref<SkLayerDrawLooper> looper(looperBuilder.detachLooper());
+ SkSmallAllocator<1, 32> allocator;
+ void* buffer = allocator.reserveT<SkDrawLooper::Context>(looper->contextSize());
+ SkDrawLooper::Context* context = looper->createContext(&canvas, buffer);
+
+ // The back layer should come first.
+ REPORTER_ASSERT(reporter, context->next(&canvas, &paint));
+ REPORTER_ASSERT(reporter, SkXfermode::IsMode(paint.getXfermode(), SkXfermode::kSrcOver_Mode));
+ canvas.drawRect(SkRect::MakeWH(50.0f, 50.0f), paint);
+ REPORTER_ASSERT(reporter, 0.0f == device.fLastMatrix.getTranslateX());
+ REPORTER_ASSERT(reporter, 0.0f == device.fLastMatrix.getTranslateY());
+ paint.reset();
+
+ // Then the front layer.
+ REPORTER_ASSERT(reporter, context->next(&canvas, &paint));
+ REPORTER_ASSERT(reporter, SkXfermode::IsMode(paint.getXfermode(), SkXfermode::kSrc_Mode));
+ canvas.drawRect(SkRect::MakeWH(50.0f, 50.0f), paint);
+ REPORTER_ASSERT(reporter, 10.0f == device.fLastMatrix.getTranslateX());
+ REPORTER_ASSERT(reporter, 20.0f == device.fLastMatrix.getTranslateY());
+
+ // Only two layers were added, so that should be the end.
+ REPORTER_ASSERT(reporter, !context->next(&canvas, &paint));
+}
+
+DEF_TEST(LayerDrawLooper, reporter) {
+ test_frontToBack(reporter);
+ test_backToFront(reporter);
+ test_mixed(reporter);
+}
