Holepunch layers for SurfaceView

Update RenderNodeDrawable to hole punch areas into
layers created for SurfaceView

Bug: 184297961
Test: Added CTS test to SurfaceViewTests
Change-Id: I1f03a4fe34c5a8b7411ebe728ea3d4195fcd1fac

1 files changed, 43 insertions, 0 deletions

diff --git a/libs/hwui/pipeline/skia/TransformCanvas.cpp b/libs/hwui/pipeline/skia/TransformCanvas.cpp
new file mode 100644
index 000000000000..6bfbb0d270b7
--- /dev/null
+++ b/libs/hwui/pipeline/skia/TransformCanvas.cpp
@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#include "TransformCanvas.h"
+#include "HolePunch.h"
+#include "SkData.h"
+#include "SkDrawable.h"
+
+using namespace android::uirenderer::skiapipeline;
+
+void TransformCanvas::onDrawAnnotation(const SkRect& rect, const char* key, SkData* value) {
+    if (HOLE_PUNCH_ANNOTATION == key) {
+        auto* rectParams = static_cast<const float*>(value->data());
+        float radiusX = rectParams[0];
+        float radiusY = rectParams[1];
+        SkRRect roundRect = SkRRect::MakeRectXY(rect, radiusX, radiusY);
+
+        SkPaint paint;
+        paint.setColor(0);
+        paint.setBlendMode(SkBlendMode::kClear);
+        mWrappedCanvas->drawRRect(roundRect, paint);
+    }
+}
+
+void TransformCanvas::onDrawDrawable(SkDrawable* drawable, const SkMatrix* matrix) {
+    drawable->draw(this, matrix);
+}
+
+bool TransformCanvas::onFilter(SkPaint& paint) const {
+    return false;
+}