ui/app_list/views/folder_background_view.h

   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 #ifndef UI_APP_LIST_VIEWS_FOLDER_BACKGROUND_VIEW_H_
   6 #define UI_APP_LIST_VIEWS_FOLDER_BACKGROUND_VIEW_H_
   7
   8 #include "ui/compositor/layer_animation_observer.h"
   9 #include "ui/views/view.h"
  10
  11 namespace app_list {
  12
  13 class AppListFolderView;
  14
  15 // Draws the ink bubble indicating the boundary of the folder when user drags an
  16 // item inside a folder.
  17 class FolderBackgroundView : public views::View,
  18                              public ui::ImplicitAnimationObserver {
  19  public:
  20   enum ShowState {
  21     NO_BUBBLE,
  22     SHOW_BUBBLE,
  23     HIDE_BUBBLE,
  24   };
  25
  26   FolderBackgroundView();
  27   ~FolderBackgroundView() override;
  28
  29   // Updates the ink bubble's ShowState.
  30   void UpdateFolderContainerBubble(ShowState state);
  31
  32   // Returns the radius of the folder container ink bubble.
  33   int GetFolderContainerBubbleRadius() const;
  34
  35   void set_folder_view(AppListFolderView* folder_view) {
  36     folder_view_ = folder_view;
  37   }
  38
  39  private:
  40   // views::View overrides:
  41   void OnPaint(gfx::Canvas* canvas) override;
  42
  43   // ui::ImplicitAnimationObserver overrides:
  44   void OnImplicitAnimationsCompleted() override;
  45
  46   AppListFolderView* folder_view_;
  47   ShowState show_state_;
  48
  49   DISALLOW_COPY_AND_ASSIGN(FolderBackgroundView);
  50 };
  51
  52 }  // namespace app_list
  53
  54 #endif  // UI_APP_LIST_VIEWS_FOLDER_BACKGROUND_VIEW_H_