1 files changed, 49 insertions, 0 deletions
diff --git a/experimental/sksg/geometry/SkSGGeometryTransform.cpp b/experimental/sksg/geometry/SkSGGeometryTransform.cpp
new file mode 100644
index 0000000000..14c37d98b9
--- /dev/null
+++ b/experimental/sksg/geometry/SkSGGeometryTransform.cpp
@@ -0,0 +1,49 @@
+/*
+ * Copyright 2018 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "SkSGGeometryTransform.h"
+
+#include "SkCanvas.h"
+
+namespace sksg {
+
+GeometryTransform::GeometryTransform(sk_sp<GeometryNode> child, sk_sp<Matrix> matrix)
+    : fChild(std::move(child))
+    , fMatrix(std::move(matrix)) {
+    fChild->addInvalReceiver(this);
+    fMatrix->addInvalReceiver(this);
+}
+
+GeometryTransform::~GeometryTransform() {
+    fChild->removeInvalReceiver(this);
+    fMatrix->removeInvalReceiver(this);
+}
+
+SkRect GeometryTransform::onRevalidate(InvalidationController* ic, const SkMatrix& ctm) {
+    SkASSERT(this->hasInval());
+
+    // We don't care about matrix reval results.
+    fMatrix->revalidate(ic, ctm);
+    const auto& m = fMatrix->getMatrix();
+
+    auto bounds = fChild->revalidate(ic, ctm);
+    fTransformed = fChild->asPath();
+    fTransformed.transform(m);
+
+    m.mapRect(&bounds);
+    return  bounds;
+}
+
+SkPath GeometryTransform::onAsPath() const {
+    return fTransformed;
+}
+
+void GeometryTransform::onDraw(SkCanvas* canvas, const SkPaint& paint) const {
+    canvas->drawPath(fTransformed, paint);
+}
+
+} // namespace sksg