ui/events/gesture_detection/gesture_event_data_packet.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "ui/events/gesture_detection/gesture_event_data_packet.h"
   6
   7 #include "base/logging.h"
   8 #include "ui/events/gesture_detection/motion_event.h"
   9
  10 namespace ui {
  11 namespace {
  12
  13 GestureEventDataPacket::GestureSource ToGestureSource(
  14     const ui::MotionEvent& event) {
  15   switch (event.GetAction()) {
  16     case ui::MotionEvent::ACTION_DOWN:
  17       return GestureEventDataPacket::TOUCH_SEQUENCE_START;
  18     case ui::MotionEvent::ACTION_UP:
  19       return GestureEventDataPacket::TOUCH_SEQUENCE_END;
  20     case ui::MotionEvent::ACTION_MOVE:
  21       return GestureEventDataPacket::TOUCH_MOVE;
  22     case ui::MotionEvent::ACTION_CANCEL:
  23       return GestureEventDataPacket::TOUCH_SEQUENCE_CANCEL;
  24     case ui::MotionEvent::ACTION_POINTER_DOWN:
  25       return GestureEventDataPacket::TOUCH_START;
  26     case ui::MotionEvent::ACTION_POINTER_UP:
  27       return GestureEventDataPacket::TOUCH_END;
  28   };
  29   NOTREACHED() << "Invalid ui::MotionEvent action: " << event.GetAction();
  30   return GestureEventDataPacket::INVALID;
  31 }
  32
  33 }  // namespace
  34
  35 GestureEventDataPacket::GestureEventDataPacket()
  36     : gesture_source_(UNDEFINED), ack_state_(AckState::PENDING) {
  37 }
  38
  39 GestureEventDataPacket::GestureEventDataPacket(
  40     base::TimeTicks timestamp,
  41     GestureSource source,
  42     const gfx::PointF& touch_location,
  43     const gfx::PointF& raw_touch_location)
  44     : timestamp_(timestamp),
  45       touch_location_(touch_location),
  46       raw_touch_location_(raw_touch_location),
  47       gesture_source_(source),
  48       ack_state_(AckState::PENDING) {
  49   DCHECK_NE(gesture_source_, UNDEFINED);
  50 }
  51
  52 GestureEventDataPacket::GestureEventDataPacket(
  53     const GestureEventDataPacket& other)
  54     : timestamp_(other.timestamp_),
  55       gestures_(other.gestures_),
  56       touch_location_(other.touch_location_),
  57       raw_touch_location_(other.raw_touch_location_),
  58       gesture_source_(other.gesture_source_),
  59       ack_state_(AckState::PENDING) {
  60 }
  61
  62 GestureEventDataPacket::~GestureEventDataPacket() {
  63 }
  64
  65 GestureEventDataPacket& GestureEventDataPacket::operator=(
  66     const GestureEventDataPacket& other) {
  67   timestamp_ = other.timestamp_;
  68   gesture_source_ = other.gesture_source_;
  69   touch_location_ = other.touch_location_;
  70   raw_touch_location_ = other.raw_touch_location_;
  71   gestures_ = other.gestures_;
  72   ack_state_ = other.ack_state_;
  73   return *this;
  74 }
  75
  76 void GestureEventDataPacket::Push(const GestureEventData& gesture) {
  77   DCHECK_NE(ET_UNKNOWN, gesture.type());
  78   gestures_->push_back(gesture);
  79 }
  80
  81 GestureEventDataPacket GestureEventDataPacket::FromTouch(
  82     const ui::MotionEvent& touch) {
  83   return GestureEventDataPacket(touch.GetEventTime(),
  84                                 ToGestureSource(touch),
  85                                 gfx::PointF(touch.GetX(), touch.GetY()),
  86                                 gfx::PointF(touch.GetRawX(), touch.GetRawY()));
  87 }
  88
  89 GestureEventDataPacket GestureEventDataPacket::FromTouchTimeout(
  90     const GestureEventData& gesture) {
  91   GestureEventDataPacket packet(gesture.time,
  92                                 TOUCH_TIMEOUT,
  93                                 gfx::PointF(gesture.x, gesture.y),
  94                                 gfx::PointF(gesture.raw_x, gesture.raw_y));
  95   packet.Push(gesture);
  96   return packet;
  97 }
  98
  99 void GestureEventDataPacket::Ack(bool event_consumed) {
 100   DCHECK_EQ(static_cast<int>(ack_state_), static_cast<int>(AckState::PENDING));
 101   ack_state_ = event_consumed ? AckState::CONSUMED : AckState::UNCONSUMED;
 102 }
 103
 104 }  // namespace ui