pointer_data.cc

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// Copyright 2013 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
 
#include "flutter/lib/ui/window/pointer_data.h"
 
#include <cstring>
 
namespace flutter {
 
// The number of fields of PointerData.
//
// If kPointerDataFieldCount changes, update the corresponding values to:
//
//  * _kPointerDataFieldCount in platform_dispatcher.dart
//  * POINTER_DATA_FIELD_COUNT in AndroidTouchProcessor.java
//
// (This is a centralized list of all locations that should be kept up-to-date.)
static constexpr int kPointerDataFieldCount = 36;
static constexpr int kBytesPerField = sizeof(int64_t);
 
static_assert(sizeof(PointerData) == kBytesPerField * kPointerDataFieldCount,
              "PointerData has the wrong size");
 
void PointerData::Clear() {
  memset(this, 0, sizeof(PointerData));
}
 
}  // namespace flutter