Laser tool blocks events from propagating.

ash/common/system/chromeos/palette/tools/laser_pointer_points.cc

-// Copyright 2016 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 "ash/common/system/chromeos/palette/tools/laser_pointer_points.h"
-
-#include <algorithm>
-#include <limits>
-
-namespace ash {
-
-LaserPointerPoints::LaserPointerPoints(base::TimeDelta life_duration)
-    : life_duration_(life_duration) {}
-
-LaserPointerPoints::~LaserPointerPoints() {}
-
-void LaserPointerPoints::AddPoint(const gfx::Point& point) {
-  LaserPoint new_point;
-  new_point.location = point;
-  new_point.creation_time = base::Time::Now();
-  points_.push_back(new_point);
-  ClearOldPoints();
-}
-
-void LaserPointerPoints::Clear() {
-  points_.clear();
-}
-
-gfx::Rect LaserPointerPoints::GetBoundingBox() {
-  if (IsEmpty())
-    return gfx::Rect();
-
-  gfx::Point min_point = GetOldest().location;
-  gfx::Point max_point = GetOldest().location;
-  for (const LaserPoint& point : points_) {
-    min_point.SetToMin(point.location);
-    max_point.SetToMax(point.location);
-  }
-  return gfx::BoundingRect(min_point, max_point);
-}
-
-LaserPointerPoints::LaserPoint LaserPointerPoints::GetOldest() const {
-  DCHECK(!IsEmpty());
-  return points_.front();
-}
-
-LaserPointerPoints::LaserPoint LaserPointerPoints::GetNewest() const {
-  DCHECK(!IsEmpty());
-  return points_.back();
-}
-
-bool LaserPointerPoints::IsEmpty() const {
-  return points_.empty();
-}
-
-int LaserPointerPoints::GetNumberOfPoints() const {
-  return points_.size();
-}
-
-const std::deque<LaserPointerPoints::LaserPoint>&
-LaserPointerPoints::laser_points() {
-  return points_;
-}
-
-void LaserPointerPoints::ClearOldPoints() {
-  DCHECK(!IsEmpty());
-  auto first_alive_point =
-      std::find_if(points_.begin(), points_.end(), [this](LaserPoint& p) {
-        return GetNewest().creation_time - p.creation_time < life_duration_;
-      });
-  points_.erase(points_.begin(), first_alive_point);
-}
-
-}  // namespace ash