Initial import of Cobalt 2.8885 2016-07-27
diff --git a/src/third_party/skia/include/effects/SkLayerRasterizer.h b/src/third_party/skia/include/effects/SkLayerRasterizer.h
new file mode 100644
index 0000000..60b3f20
--- /dev/null
+++ b/src/third_party/skia/include/effects/SkLayerRasterizer.h
@@ -0,0 +1,92 @@
+
+/*
+ * Copyright 2006 The Android Open Source Project
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+
+#ifndef SkLayerRasterizer_DEFINED
+#define SkLayerRasterizer_DEFINED
+
+#include "SkRasterizer.h"
+#include "SkDeque.h"
+#include "SkScalar.h"
+
+class SkPaint;
+
+class SK_API SkLayerRasterizer : public SkRasterizer {
+public:
+ virtual ~SkLayerRasterizer();
+
+ class SK_API Builder {
+ public:
+ Builder();
+ ~Builder();
+
+ void addLayer(const SkPaint& paint) {
+ this->addLayer(paint, 0, 0);
+ }
+
+ /**
+ * Add a new layer (above any previous layers) to the rasterizer.
+ * The layer will extract those fields that affect the mask from
+ * the specified paint, but will not retain a reference to the paint
+ * object itself, so it may be reused without danger of side-effects.
+ */
+ void addLayer(const SkPaint& paint, SkScalar dx, SkScalar dy);
+
+ /**
+ * Pass queue of layers on to newly created layer rasterizer and return it. The builder
+ * *cannot* be used any more after calling this function. If no layers have been added,
+ * returns NULL.
+ *
+ * The caller is responsible for calling unref() on the returned object, if non NULL.
+ */
+ SkLayerRasterizer* detachRasterizer();
+
+ /**
+ * Create and return a new immutable SkLayerRasterizer that contains a shapshot of the
+ * layers that were added to the Builder, without modifying the Builder. The Builder
+ * *may* be used after calling this function. It will continue to hold any layers
+ * previously added, so consecutive calls to this function will return identical objects,
+ * and objects returned by future calls to this function contain all the layers in
+ * previously returned objects. If no layers have been added, returns NULL.
+ *
+ * Future calls to addLayer will not affect rasterizers previously returned by this call.
+ *
+ * The caller is responsible for calling unref() on the returned object, if non NULL.
+ */
+ SkLayerRasterizer* snapshotRasterizer() const;
+
+ private:
+ SkDeque* fLayers;
+ };
+
+ SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkLayerRasterizer)
+
+protected:
+ SkLayerRasterizer();
+ SkLayerRasterizer(SkDeque* layers);
+#ifdef SK_SUPPORT_LEGACY_DEEPFLATTENING
+ SkLayerRasterizer(SkReadBuffer&);
+#endif
+ virtual void flatten(SkWriteBuffer&) const SK_OVERRIDE;
+
+ // override from SkRasterizer
+ virtual bool onRasterize(const SkPath& path, const SkMatrix& matrix,
+ const SkIRect* clipBounds,
+ SkMask* mask, SkMask::CreateMode mode) const;
+
+private:
+ const SkDeque* const fLayers;
+
+ static SkDeque* ReadLayers(SkReadBuffer& buffer);
+
+ friend class LayerRasterizerTester;
+
+ typedef SkRasterizer INHERITED;
+};
+
+#endif
