| // 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 |