Experimental app list: Change transition animations of top-level pages.

ui/app_list/views/contents_view.h

 // Copyright (c) 2012 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.
 
 #ifndef UI_APP_LIST_VIEWS_CONTENTS_VIEW_H_
 #define UI_APP_LIST_VIEWS_CONTENTS_VIEW_H_
 
 #include <map>
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
 #include "ui/app_list/app_list_export.h"
 #include "ui/app_list/pagination_model.h"
 #include "ui/app_list/pagination_model_observer.h"
 #include "ui/views/view.h"
 
+namespace gfx {
+class Rect;
+}
+
 namespace views {
 class ViewModel;
 }
 
 namespace app_list {
 
 class AppsGridView;
 class ApplicationDragAndDropHost;
 class AppListFolderItem;
 class AppListMainView;
@@ skipping 49 matching lines @@
 
   // Sets the active launcher page and animates the pages into place.
   void SetActivePage(int page_index);
 
   // The index of the currently active launcher page.
   int GetActivePageIndex() const;
 
   // True if |named_page| is the current active laucher page.
   bool IsNamedPageActive(NamedPage named_page) const;
 
-  // Gets the index of a launcher page in |view_model_|, by NamedPage.
+  // True if |page_index| is the index of |named_page|.
+  bool IndexIsNamedPage(int page_index, NamedPage named_page) const;

[calamity, 2014/09/10 01:56:40]

Can we have GetPageIndexForNamedPage() return -1 if the NamedPage isn't found to
avoid bloating the API?

[Matt Giuca, 2014/09/10 03:15:30]

Done.

+
+  // Gets the index of a launcher page in |view_model_|, by NamedPage. The given
+  // |named_page| must have a view in the view model.
   int GetPageIndexForNamedPage(NamedPage named_page) const;
 
   int NumLauncherPages() const;
 
   void Prerender();
 
   AppsContainerView* apps_container_view() { return apps_container_view_; }
   StartPageView* start_page_view() { return start_page_view_; }
   SearchResultListView* search_results_view() { return search_results_view_; }
   views::View* GetPageView(int index);
@@ skipping 16 matching lines @@
   const PaginationModel& pagination_model() { return pagination_model_; }
 
  private:
   // Sets the active launcher page, accounting for whether the change is for
   // search results.
   void SetActivePageInternal(int page_index, bool show_search_results);
 
   // Invoked when active view is changed.
   void ActivePageChanged(bool show_search_results);
 
+  // Gets the origin (the off-screen resting place) for a given launcher page
+  // with index |page_index|. |bounds| is the contents bounds for this view.
+  int PageOrigin(const gfx::Rect& bounds, int page_index) const;

[calamity, 2014/09/10 01:56:40]

Can this return a gfx::Rect() so that it's actually an origin?

Maybe change the name to (Get)?OffscreenPageBounds().

[Matt Giuca, 2014/09/10 03:15:30]

Done & Done.

+
   // Calculates and sets the bounds for the subviews. If there is currently an
   // animation, this positions the views as appropriate for the current frame.
   void UpdatePageBounds();
 
   // Adds |view| as a new page to the end of the list of launcher pages. The
   // view is inserted as a child of the ContentsView, and a button with
   // |resource_id| is added to the ContentsSwitcherView. There is no name
   // associated with the page. Returns the index of the new page.
   int AddLauncherPage(views::View* view, int resource_id);
 
@@ skipping 26 matching lines @@
 
   // Manages the pagination for the launcher pages.
   PaginationModel pagination_model_;
 
   DISALLOW_COPY_AND_ASSIGN(ContentsView);
 };
 
 }  // namespace app_list
 
 #endif  // UI_APP_LIST_VIEWS_CONTENTS_VIEW_H_