1 files changed, 42 insertions, 0 deletions
diff --git a/gfx/skia/skia/src/core/SkLocalMatrixImageFilter.h b/gfx/skia/skia/src/core/SkLocalMatrixImageFilter.h
new file mode 100644
index 0000000000..d12666a6f4
--- /dev/null
+++ b/gfx/skia/skia/src/core/SkLocalMatrixImageFilter.h
@@ -0,0 +1,42 @@
+/*
+ * Copyright 2015 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 SkLocalMatrixImageFilter_DEFINED
+#define SkLocalMatrixImageFilter_DEFINED
+
+#include "include/core/SkFlattenable.h"
+#include "src/core/SkImageFilter_Base.h"
+
+/**
+ *  Wraps another imagefilter + matrix, such that using this filter will give the same result
+ *  as using the wrapped filter with the matrix applied to its context.
+ */
+class SkLocalMatrixImageFilter : public SkImageFilter_Base {
+public:
+    static sk_sp<SkImageFilter> Make(const SkMatrix& localM, sk_sp<SkImageFilter> input);
+
+    SkRect computeFastBounds(const SkRect&) const override;
+
+protected:
+    void flatten(SkWriteBuffer&) const override;
+    sk_sp<SkSpecialImage> onFilterImage(const Context&, SkIPoint* offset) const override;
+    SkIRect onFilterBounds(const SkIRect& src, const SkMatrix& ctm,
+                           MapDirection, const SkIRect* inputRect) const override;
+
+    MatrixCapability onGetCTMCapability() const override { return MatrixCapability::kComplex; }
+
+private:
+    SK_FLATTENABLE_HOOKS(SkLocalMatrixImageFilter)
+
+    SkLocalMatrixImageFilter(const SkMatrix& localM, sk_sp<SkImageFilter> input);
+
+    SkMatrix fLocalM;
+
+    using INHERITED = SkImageFilter_Base;
+};
+
+#endif