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// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef UI_GFX_MOJO_TRANSFORM_STRUCT_TRAITS_H_
#define UI_GFX_MOJO_TRANSFORM_STRUCT_TRAITS_H_
#include "mojo/public/cpp/bindings/array_traits.h"
#include "ui/gfx/mojo/transform.mojom-shared.h"
#include "ui/gfx/transform.h"
namespace mojo {
template <>
struct ArrayTraits<SkMatrix44> {
using Element = float;
static bool IsNull(const SkMatrix44& input) { return input.isIdentity(); }
static size_t GetSize(const SkMatrix44& input) { return 16; }
static float GetAt(const SkMatrix44& input, size_t index) {
return input.getFloat(static_cast<int>(index % 4),
static_cast<int>(index / 4));
}
};
template <>
struct StructTraits<gfx::mojom::TransformDataView, gfx::Transform> {
static const SkMatrix44& matrix(const gfx::Transform& transform) {
return transform.matrix();
}
static bool Read(gfx::mojom::TransformDataView data, gfx::Transform* out) {
ArrayDataView<float> matrix;
data.GetMatrixDataView(&matrix);
if (matrix.is_null()) {
out->MakeIdentity();
return true;
}
out->matrix().setColMajorf(matrix.data());
return true;
}
};
} // namespace mojo
#endif // UI_GFX_MOJO_TRANSFORM_STRUCT_TRAITS_H_