[Android] Out with the Android GR, in with the new unified C++ GR

ui/events/gesture_detection/gesture_event_data_packet.cc

+// Copyright 2014 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.
+
+#include "ui/events/gesture_detection/gesture_event_data_packet.h"
+
+#include "base/logging.h"
+#include "ui/events/gesture_detection/motion_event.h"
+
+namespace ui {
+namespace {
+
+GestureEventDataPacket::GestureSource ToGestureSource(
+    const ui::MotionEvent& event) {
+  switch (event.GetAction()) {
+    case ui::MotionEvent::ACTION_DOWN:
+      return GestureEventDataPacket::TOUCH_SEQUENCE_START;
+    case ui::MotionEvent::ACTION_UP:
+      return GestureEventDataPacket::TOUCH_SEQUENCE_END;
+    case ui::MotionEvent::ACTION_MOVE:
+      return GestureEventDataPacket::TOUCH_MOVE;
+    case ui::MotionEvent::ACTION_CANCEL:
+      return GestureEventDataPacket::TOUCH_SEQUENCE_END;
+    case ui::MotionEvent::ACTION_POINTER_DOWN:
+      return GestureEventDataPacket::TOUCH_START;
+    case ui::MotionEvent::ACTION_POINTER_UP:
+      return GestureEventDataPacket::TOUCH_END;
+  };
+  NOTREACHED() << "Invalid ui::MotionEvent action: " << event.GetAction();
+  return GestureEventDataPacket::INVALID;
+}
+
+}  // namespace
+
+GestureEventDataPacket::GestureEventDataPacket()
+    : gesture_count_(0), gesture_source_(UNDEFINED) {}
+
+GestureEventDataPacket::GestureEventDataPacket(GestureSource source)
+    : gesture_count_(0), gesture_source_(source) {
+  DCHECK_NE(gesture_source_, UNDEFINED);
+}
+
+GestureEventDataPacket::GestureEventDataPacket(
+    const GestureEventDataPacket& other)
+    : gesture_count_(other.gesture_count_),
+      gesture_source_(other.gesture_source_) {
+  std::copy(other.gestures_, other.gestures_ + other.gesture_count_, gestures_);
+}
+
+GestureEventDataPacket::~GestureEventDataPacket() {}
+
+GestureEventDataPacket& GestureEventDataPacket::operator=(
+    const GestureEventDataPacket& other) {
+  gesture_count_ = other.gesture_count_;
+  gesture_source_ = other.gesture_source_;
+  std::copy(other.gestures_, other.gestures_ + other.gesture_count_, gestures_);
+  return *this;
+}
+
+void GestureEventDataPacket::Push(const GestureEventData& gesture) {
+  DCHECK_NE(GESTURE_TYPE_INVALID, gesture.type);
+  CHECK_LT(gesture_count_, static_cast<size_t>(kMaxGesturesPerTouch));
+  gestures_[gesture_count_++] = gesture;
+}
+
+GestureEventDataPacket GestureEventDataPacket::FromTouch(
+    const ui::MotionEvent& touch) {
+  return GestureEventDataPacket(ToGestureSource(touch));
+}
+
+GestureEventDataPacket GestureEventDataPacket::FromTouchTimeout(
+    const GestureEventData& gesture) {
+  GestureEventDataPacket packet(TOUCH_TIMEOUT);
+  packet.Push(gesture);
+  return packet;
+}
+
+}  // namespace ui