ui/app_list/cocoa/item_drag_controller.h

   1 // Copyright 2013 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_COCOA_ITEM_DRAG_CONTROLLER_H_
   6 #define UI_APP_LIST_COCOA_ITEM_DRAG_CONTROLLER_H_
   7
   8 #import <Cocoa/Cocoa.h>
   9 #import <QuartzCore/QuartzCore.h>
  10
  11 #include "base/mac/scoped_nsobject.h"
  12
  13 @class AppsGridViewItem;
  14
  15 // Controller to manage the animations and transient views that are used when
  16 // dragging an app list item around the app list grid. When initiated, the item
  17 // image (only) is grown in an animation, and sticks to the mouse cursor. When
  18 // released, the label is added to the image and it shrinks and moves to the
  19 // item location in the grid.
  20 @interface ItemDragController : NSViewController {
  21  @private
  22   base::scoped_nsobject<CALayer> dragLayer_;
  23   base::scoped_nsobject<NSButton> buttonToRestore_;
  24   NSPoint mouseOffset_;
  25   NSTimeInterval growStart_;
  26   BOOL shrinking_;
  27 }
  28
  29 - (id)initWithGridCellSize:(NSSize)size;
  30
  31 - (void)initiate:(AppsGridViewItem*)item
  32     mouseDownLocation:(NSPoint)mouseDownLocation
  33       currentLocation:(NSPoint)currentLocation
  34             timestamp:(NSTimeInterval)eventTimestamp;
  35
  36 - (void)update:(NSPoint)currentLocation
  37      timestamp:(NSTimeInterval)eventTimestamp;
  38
  39 - (void)complete:(AppsGridViewItem*)item
  40     targetOrigin:(NSPoint)targetOrigin;
  41
  42 @end
  43
  44 #endif  // UI_APP_LIST_COCOA_ITEM_DRAG_CONTROLLER_H_