chromium/components/viz/common/hit_test/aggregated_hit_test_region.h

// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef COMPONENTS_VIZ_COMMON_HIT_TEST_AGGREGATED_HIT_TEST_REGION_H_
#define COMPONENTS_VIZ_COMMON_HIT_TEST_AGGREGATED_HIT_TEST_REGION_H_

#include <stdint.h>

#include "components/viz/common/hit_test/hit_test_region_list.h"
#include "components/viz/common/surfaces/frame_sink_id.h"
#include "ui/gfx/geometry/rect.h"
#include "ui/gfx/geometry/transform.h"

namespace viz {

// A AggregatedHitTestRegion element with child_count of kEndOfList indicates
// the last element and end of the list.
constexpr int32_t kEndOfList = …;

// An array of AggregatedHitTestRegion elements is used to define the
// aggregated hit-test data for the Display.
//
// It is designed to be in shared memory so that the viz service can
// write the hit_test data, and the viz host can read without
// process hops.
struct AggregatedHitTestRegion { … };

}  // namespace viz

#endif  // COMPONENTS_VIZ_COMMON_HIT_TEST_AGGREGATED_HIT_TEST_REGION_H_