1// Copyright (c) 2012 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#ifndef UI_APP_LIST_VIEWS_PULSING_BLOCK_VIEW_H_
6#define UI_APP_LIST_VIEWS_PULSING_BLOCK_VIEW_H_
7
8#include "base/basictypes.h"
9#include "base/compiler_specific.h"
10#include "base/timer/timer.h"
11#include "ui/views/view.h"
12
13namespace gfx {
14class Size;
15}
16
17namespace app_list {
18
19// PulsingBlockView shows a pulsing white block via layer animation.
20class PulsingBlockView : public views::View {
21 public:
22  // Constructs a PulsingBlockView of |size|. If |start_delay| is true,
23  // starts the pulsing animation after a random delay.
24  PulsingBlockView(const gfx::Size& size, bool start_delay);
25  virtual ~PulsingBlockView();
26
27 private:
28  void OnStartDelayTimer();
29
30  // views::View overrides:
31  virtual void OnPaint(gfx::Canvas* canvas) OVERRIDE;
32
33  base::OneShotTimer<PulsingBlockView> start_delay_timer_;
34
35  DISALLOW_COPY_AND_ASSIGN(PulsingBlockView);
36};
37
38}  // namespace app_list
39
40#endif  // UI_APP_LIST_VIEWS_PULSING_BLOCK_VIEW_H_
41