ui/app_list/views/pulsing_block_view.h

   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
  13 namespace gfx {
  14 class Size;
  15 }
  16
  17 namespace app_list {
  18
  19 // PulsingBlockView shows a pulsing white block via layer animation.
  20 class 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   ~PulsingBlockView() override;
  26
  27  private:
  28   void OnStartDelayTimer();
  29
  30   // views::View overrides:
  31   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_